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Sample records for kidney practicum breeze

  1. Land-Breeze Forecasting

    NASA Technical Reports Server (NTRS)

    Case, Jonathan L.; Wheeler, Mark M.; Merceret, Francis J. (Technical Monitor)

    2002-01-01

    The nocturnal land breeze at the Kennedy Space Center (KSC) and Cape Canaveral Air Force Station (CCAFS) is both operationally significant and challenging to forecast. The occurrence and timing of land breezes impact low-level winds, atmospheric stability, low temperatures, and fog development. Accurate predictions of the land breeze are critical for toxic material dispersion forecasts associated with space launch missions, since wind direction and low-level stability can change noticeably with the onset of a land breeze. This report presents a seven-year observational study of land breezes over east-central Florida from 1995 to 2001. This comprehensive analysis was enabled by the high-resolution tower observations over KSC/CCAFS. Five-minute observations of winds, temperature, and moisture along with 9 15-MHz Doppler Radar Wind Profiler data were used to analyze specific land-breeze cases, while the tower data were used to construct a composite climatology. Utilities derived from this climatology were developed to assist forecasters in determining the land-breeze occurrence, timing, and movement based on predicted meteorological conditions.

  2. Therapeutic Recreation Practicum Manual.

    ERIC Educational Resources Information Center

    Schneegas, Kay

    This manual provides information on the practicum program offered by Moraine Valley Community College (MVCC) for students in its therapeutic recreation program. Sections I and II outline the rationale and goals for providing practical, on-the-job work experiences for therapeutic recreation students. Section III specifies MVCC's responsibilities…

  3. Interaction of the sea breeze with a river breeze in an area of complex coastal heating

    NASA Technical Reports Server (NTRS)

    Zhong, Shiyuan; Takle, Eugene S.; Leone, John M., Jr.

    1991-01-01

    The interaction of the sea-breeze circulation with a river-breeze circulation in an area of complex coastal heating (east coast of Florida) was studied using a 3D finite-element mesoscale model. The model simulations are compared with temperature and wind fields observed on a typical fall day during the Kennedy Space Center Atmospheric Boundary Layer Experiment. The results from numerical experiments designed to isolate the effect of the river breeze indicate that the convergence in the sea-breeze front is suppressed when it passes over the cooler surface of the rivers.

  4. Rethinking the Practicum: Limitations and Possibilities

    ERIC Educational Resources Information Center

    Grudnoff, Lexie

    2011-01-01

    Teachers and policy makers often view the practicum as being the critical component of initial teacher education (ITE) programmes. While numerous studies have investigated the practicum in ITE, less attention has been given to the role practicum plays in the transition from preparation to teaching. This study investigated 12 New Zealand first-year…

  5. Evolving Practicum Issues in School Psychology Preparation

    ERIC Educational Resources Information Center

    Li, Chieh; Fiorello, Catherine A.

    2011-01-01

    Practicum experiences have been a critical aspect of the education and training of school psychologists at both the specialist and doctoral level. At the specialist level, the National Association of School Psychologists recently updated their standards for practicum, but the content, quality, and length of practicum vary tremendously across…

  6. Workplace-Based Practicum: Enabling Expansive Practices

    ERIC Educational Resources Information Center

    Pridham, Bruce A.; Deed, Craig; Cox, Peter

    2013-01-01

    Effective pre-service teacher education integrates theoretical and practical knowledge. One means of integration is practicum in a school workplace. In a time of variable approaches to, and models of, practicum, we outline an innovative model of school immersion as part of a teacher preparation program. We apply Fuller and Unwin's (2004)…

  7. Establishing Professional Relationships in Practicum Settings

    ERIC Educational Resources Information Center

    Ferrier-Kerr, Jenny L.

    2009-01-01

    The relationship between an associate teacher and student teacher is a crucial aspect of the practicum experience in pre-service teacher education. Establishing a professional relationship is critical to the learning that occurs during the practicum and is an element that requires a professional approach by all parties. This paper discusses a…

  8. Winter Lake Breezes near the Great Salt Lake

    NASA Astrophysics Data System (ADS)

    Crosman, Erik T.; Horel, John D.

    2015-12-01

    Case studies of lake breezes during wintertime cold air pools in Utah's Salt Lake Valley are examined. While summer breezes originating from the Great Salt Lake are typically deeper, of longer duration, and have higher wind speeds than winter breezes, the rate of inland penetration and cross-frontal temperature differences can be higher during the winter. The characteristics of winter breezes and the forcing mechanisms controlling them (e.g., snow cover, background flow, vertical stability profile, clouds, lake temperature, lake sheltering, and drainage pooling) are more complex and variable than those evident in summer. During the afternoon in the Salt Lake Valley, these lake breezes can lead to elevated pollution levels due to the transport of fine particle pollutants from over the Great Salt Lake, decreased vertical mixing depth, and increased vertical stability.

  9. Winter Lake Breezes near the Great Salt Lake

    NASA Astrophysics Data System (ADS)

    Crosman, Erik T.; Horel, John D.

    2016-05-01

    Case studies of lake breezes during wintertime cold air pools in Utah's Salt Lake Valley are examined. While summer breezes originating from the Great Salt Lake are typically deeper, of longer duration, and have higher wind speeds than winter breezes, the rate of inland penetration and cross-frontal temperature differences can be higher during the winter. The characteristics of winter breezes and the forcing mechanisms controlling them (e.g., snow cover, background flow, vertical stability profile, clouds, lake temperature, lake sheltering, and drainage pooling) are more complex and variable than those evident in summer. During the afternoon in the Salt Lake Valley, these lake breezes can lead to elevated pollution levels due to the transport of fine particle pollutants from over the Great Salt Lake, decreased vertical mixing depth, and increased vertical stability.

  10. Evaluating Students in the Counseling Practicum

    ERIC Educational Resources Information Center

    Lister, James L.

    1970-01-01

    This paper reviews problems related to practicum evaluation and recommends approaches to reduce them. An evaluative approach is recommended to overcome some of the limitations inherent in current practices. (KJ)

  11. Practicum and clinical experiences: postpracticum students' views.

    PubMed

    Ralph, Edwin; Walker, Keith; Wimmer, Randolph

    2009-08-01

    The clinical or practicum component of preservice undergraduate education across all disciplines typically is rated by prebaccalaureate students as the most important phase of their entire professional preparation. This study collected e-mail survey responses from 63 post-practicum nursing students who had just completed their culminating fourth-year clinical course. Students identified the most positive and the most negative aspects of that final practicum experience. These responses were compared with those reported by postpracticum students from the disciplines of engineering and teacher education. The cross-disciplinary similarity of these data related to postpracticum students' perceptions of this experiential learning phase of their preservice professional training was noted. The student voice provides a critical dimension to the program-enhancement process for all professional disciplines, and practicum organizers across the disciplines should value such student input and collaborate to improve the clinical phase of preservice education for all professions. PMID:19681532

  12. Clinical and Practicum Education in the Professions: The Student Voice

    ERIC Educational Resources Information Center

    Ralph, Edwin; Wimmer, Randy; Walker, Keith

    2008-01-01

    Undergraduate students in professional education programs typically rate their clinical or practicum experiences as the most important component of their entire pre-service preparation. This essay addresses the value of students' views regarding the effectiveness of practicum programs. We summarize the views of 546 post-practicum students from…

  13. Preservice Science Teachers' Perceptions of Their Practicum Classrooms

    ERIC Educational Resources Information Center

    Fazio, Xavier; Volante, Louis

    2011-01-01

    Practicum experiences in schools are highly valued in science teacher education programs. Yet, there are few studies examining secondary preservice science teachers' practicum classrooms. This mixed-methods study explored secondary preservice science teachers' perceptions of their practicum classroom learning environments, interpreted from an…

  14. Determining the Impact of Online Practicum Facilitation for Inservice Teachers

    ERIC Educational Resources Information Center

    Frey, Timothy

    2008-01-01

    This study investigated the impact of a project-based graduate practicum experience that was facilitated online. The study investigated the effects of the online practicum experience by: (a) using quantitative data to assess the learning and professional growth of the practicum participants in comparison to a group of teachers that did not…

  15. Mesoscale Modeling of the Inland Nocturnal Sea Breeze

    SciTech Connect

    Kurzeja, R.J.; Buckley, R.L.

    1995-09-12

    The mesoscale sea breeze has important consequences for many densely populated coastal environments, including convection initiation, aviation safety, and air quality. The sea breeze characteristics before and after sunset are markedly different (Sha et al 1993). A gravity current will form during the early afternoon due to the relatively large density difference between the land and sea air. During the afternoon, as the lighter land air is forced upward by the cooler dense sea air, Kelvin-Helmholtz (KH) billows often form along the interface, as well as thin regions of turbulent rising air, playing a crucial role in the mixing process (Simpson 1994). After sunset, the frontal zone expands as longwave radiation cools the surface which reduces vertical mixing. With further inland penetration, the sea breeze encounters increasingly stable air near the ground, resulting in the formation of an undular bore or cutoff vortex (Sha et al. 1993). It has been demonstrated that large-scale winds have profound effects on both the strength and inland penetration of sea breezes (Arritt 1993, among others). In general, offshore flow results in a sharper frontal discontinuity and less inland penetration, while onshore flow produces weaker fronts which may penetrate further inland. Most sea breeze studies have focused on its more dramatic daytime properties near the coast whereas inland nocturnal sea breezes have received much less attention. The reason for this neglect is a lack of good observational data in the boundary layer. Sha et al. (1991) note the necessity of high resolution data to capture the finer structures of the sea breeze. A unique opportunity to examine the nocturnal sea breeze became available at the Savannah River Site (SRS, located roughly 150 km from the Atlantic Ocean in southwestern South Carolina) during the Stable Boundary Layer Experiment (STABLE), 12-17 April, 1988. (Abstract Truncated)

  16. On the characteristics of sea breezes over Nigerian coastal region

    NASA Astrophysics Data System (ADS)

    Abatan, Abayomi A.; Abiodun, Babatunde J.; Omotosho, Bayo J.

    2014-04-01

    This paper describes the characteristics of sea breezes over the coastal region of Nigeria. While considerable attention has been paid to monsoon circulation over this coastal region, there is virtually no information in literature on sea breezes over the region. This study analyzed 5 years (1979-1983) data of hourly temperature and wind speed and direction from four coastal stations in Nigerian—Lagos, Warri, Port-Harcourt, and Calabar—in order to examine the characteristics of the sea breeze in the region. The results show that sea breeze usually started between 1000 and 1200 UTC, attained maximum strength of about 2-5 m s-1 in the afternoon around 1500-1600 UTC and subsided between 2000 and 2200 UTC. Consistent with maxima temperature contrast between land and sea, the maximum frequency of sea breeze occurs in February-May and September-November, with duration of about 11-13 h. The diurnal variation of wind vectors with time, portrayed by means of hodograph, shows that sea breeze rotates clockwise and anticlockwise over the region. We found that only the stations adjacent to bay demonstrate clockwise rotation during the day.

  17. The sea breeze/land breeze circulation in Los Angeles and its influence on nitryl chloride production in this region

    NASA Astrophysics Data System (ADS)

    Wagner, N. L.; Riedel, T. P.; Roberts, J. M.; Thornton, J. A.; Angevine, W. M.; Williams, E. J.; Lerner, B. M.; Vlasenko, A.; Li, S. M.; Dubé, W. P.; Coffman, D. J.; Bon, D. M.; Gouw, J. A.; Kuster, W. C.; Gilman, J. B.; Brown, S. S.

    2011-11-01

    The sea breeze/land breeze diurnal circulation within the Los Angeles Basin and adjacent waters transports marine air into the basin during the day and urban air to Santa Monica Bay during the night. Nitryl chloride, ClNO2 is a nocturnal trace gas formed from the heterogeneous reaction of dinitrogen pentaoxide (N2O5) with chloride containing aerosol. Its photolysis after sunrise produces atomic chlorine radicals and regenerates NO2, both of which may increase ozone production. Mixing of the chloride source from marine sea salt with the urban NOx source in Los Angeles provides conditions ideal for the production of ClNO2. This paper presents an analysis using a wind profiler on the coast and measurements of ClNO2 and its precursors made from both ship and aircraft to assess the prevailing meteorological conditions important for ClNO2 production in this region, with a particular focus on the production over water within the land breeze phase of the circulation. A box model is used to calculate an upper limit to the amount of ClNO2 capable of being produced strictly over Santa Monica Bay during the land breeze. On three out of the four nights of ClNO2 measurements in Santa Monica Bay, the ClNO2 exceeds the upper limit calculated using the box model and shows that the majority of the ClNO2 is produced over the city and transported to Santa Monica Bay by the land breeze. This ClNO2 transport suggests the sea breeze more efficiently transports aerosol chloride inland than land breeze transports NOx offshore.

  18. The sea breeze/land breeze circulation in Los Angeles and its influence on nitryl chloride production in this region

    NASA Astrophysics Data System (ADS)

    Wagner, N. L.; Riedel, T. P.; Roberts, J. M.; Thornton, J. A.; Angevine, W. M.; Williams, E. J.; Lerner, B. M.; Vlasenko, A.; Li, S. M.; Dubé, W. P.; Coffman, D. J.; Bon, D. M.; de Gouw, J. A.; Kuster, W. C.; Gilman, J. B.; Brown, S. S.

    2012-11-01

    The sea breeze/land breeze diurnal circulation within the Los Angeles Basin and adjacent waters transports marine air into the basin during the day and urban air to Santa Monica Bay during the night. Nitryl chloride, ClNO2 is a nocturnal trace gas formed from the heterogeneous reaction of dinitrogen pentaoxide (N2O5) with chloride containing aerosol. Its photolysis after sunrise produces atomic chlorine radicals and regenerates NO2, both of which may increase ozone production. Mixing of the chloride source from marine sea salt with the urban NOx source in Los Angeles provides conditions ideal for the production of ClNO2. This paper presents an analysis using a wind profiler on the coast and measurements of ClNO2 and its precursors made from both ship and aircraft to assess the prevailing meteorological conditions important for ClNO2 production in this region, with a particular focus on the production over water within the land breeze phase of the circulation. A box model is used to calculate an upper limit to the amount of ClNO2 capable of being produced strictly over Santa Monica Bay during the land breeze. On three out of the four nights of ClNO2 measurements in Santa Monica Bay, the ClNO2 exceeds the upper limit calculated using the box model and shows that the majority of the ClNO2 is produced over the city and transported to Santa Monica Bay by the land breeze. This ClNO2 transport suggests the sea breeze more efficiently transports aerosol chloride inland than land breeze transports NOx offshore.

  19. Review of Research on Practicum Supervision.

    ERIC Educational Resources Information Center

    Hansen, James C.

    1982-01-01

    Reviewed research on practicum supervision in terms of findings and research designs employed. Classified research according to counselor-supervisor similarity, training methods, and evaluation. Conclusions indicated no support for supervisor-counselor matching, support for experiential, modeling and didatic methods, and peer supervision. (Author)

  20. Scholarship of Teaching in Rehabilitation Counseling Practicum

    ERIC Educational Resources Information Center

    Kiener, Michael

    2007-01-01

    Understanding how students learn is a common goal for most educators; however pedagogical research in rehabilitation counselor education is limited. This study employed action research to investigate how six students learned beginning counseling skills in a rehabilitation counseling practicum class. Approximately 150 data points were analyzed by…

  1. Creative practicum leadership experiences in rural settings.

    PubMed

    Schoenfelder, Deborah Perry; Valde, Jill Gaffney

    2009-01-01

    Rural healthcare systems provide rich learning environments for nursing students, where strong nursing leaders manage care for people with diverse health problems across the lifespan. The authors describe the development, implementation, and evaluation of rural clinical leadership practicum, a prelicensure course that specifically focuses on the application of leadership concepts in small rural healthcare systems. PMID:19104347

  2. The Teaching Practicum in Thailand: Three Perspectives

    ERIC Educational Resources Information Center

    Phairee, Chatpong; Sanitchon, Nalinee; Suphanangthong, Irada; Graham, Steve; Prompruang, Jidapa; de Groot, Freek Olaf; Hopkins, Dave

    2008-01-01

    This article examines the teaching practicum in Thailand as it occurs in three settings: "Rajabhats"--four-year universities which offer an additional period of teaching practice, and where the vast majority of EFL teachers are educated; regular universities; and a TESOL short course certificate program for non-Thais preparing to teach English as…

  3. Wireless Handhelds to Support Clinical Nursing Practicum

    ERIC Educational Resources Information Center

    Wu, Cheng-Chih; Lai, Chin-Yuan

    2009-01-01

    This paper reports our implementation and evaluation of a wireless handheld learning environment used to support a clinical nursing practicum course. The learning environment was designed so that nursing students could use handhelds for recording information, organizing ideas, assessing patients, and also for interaction and collaboration with…

  4. Metaphor and Pedagogy in the Design Practicum

    ERIC Educational Resources Information Center

    Logan, Cheri

    2008-01-01

    This paper discusses the ways in which the long-established tradition of the design "practicum" continues to structure teaching and learning in undergraduate programmes. It draws on an in-depth empirical study of one degree course in graphic design and accompanying research in a small number of professional graphic design studios; this dual focus…

  5. Appendix L. A Sequence for the Practicum.

    ERIC Educational Resources Information Center

    Lamb, George

    Practicum experiences for the student teacher should be sequentially ordered, proceeding from the simple to the complex. Having identified the areas of instructional experience as (1) number of lessons taught per day, (2) number of pupils taught per lesson, (3) sequential context of the lesson taught, (4) cognitive level of the lesson taught, and…

  6. Practicum Training for Teachers of Struggling Readers

    ERIC Educational Resources Information Center

    Morris, Darrell

    2011-01-01

    Teachers who work with struggling beginning readers need a supervised training experience that leads them to understand both how reading ability develops and how to adapt instruction to meet the needs of individual children. The practicum, in which a teacher works with one struggling reader under the supervision of an experienced and expert…

  7. The Influence of Soil Moisture, Coastline Curvature, and Land-Breeze Circulations on Sea-Breeze Initiated Precipitation

    NASA Technical Reports Server (NTRS)

    Baker, David R.; Lynn, Barry H.; Boone, Aaron; Tao, Wei-Kuo; Simpson, Joanne

    2000-01-01

    Idealized numerical simulations are performed with a coupled atmosphere/land-surface model to identify the roles of initial soil moisture, coastline curvature, and land breeze circulations on sea breeze initiated precipitation. Data collected on 27 July 1991 during the Convection and Precipitation Electrification Experiment (CAPE) in central Florida are used. The 3D Goddard Cumulus Ensemble (GCE) cloud resolving model is coupled with the Goddard Parameterization for Land-Atmosphere-Cloud Exchange (PLACE) land surface model, thus providing a tool to simulate more realistically land-surface/atmosphere interaction and convective initiation. Eight simulations are conducted with either straight or curved coast-lines, initially homogeneous soil moisture or initially variable soil moisture, and initially homogeneous horizontal winds or initially variable horizontal winds (land breezes). All model simulations capture the diurnal evolution and general distribution of sea-breeze initiated precipitation over central Florida. The distribution of initial soil moisture influences the timing, intensity and location of subsequent precipitation. Soil moisture acts as a moisture source for the atmosphere, increases the connectively available potential energy, and thus preferentially focuses heavy precipitation over existing wet soil. Strong soil moisture-induced mesoscale circulations are not evident in these simulations. Coastline curvature has a major impact on the timing and location of precipitation. Earlier low-level convergence occurs inland of convex coastlines, and subsequent precipitation occurs earlier in simulations with curved coastlines. The presence of initial land breezes alone has little impact on subsequent precipitation. however, simulations with both coastline curvature and initial land breezes produce significantly larger peak rain rates due to nonlinear interactions.

  8. STUDIES OF OXIDANT TRANSPORT BEYOND URBAN AREAS. NEW ENGLAND SEA BREEZE, 1975

    EPA Science Inventory

    Relationships between ambient air quality and sea breeze conditions in southern New England are examined. In the Boston area, sea breeze conditions were observed on approximately 25% of the days of the study (July-August 1975). The sea breeze effect can either moderate or enhance...

  9. Ocean breeze monitoring network at the Oyster Creek Nuclear Plant

    SciTech Connect

    Heck, W.

    1987-01-01

    The Oyster Creek Nuclear Generating Station (OCNGS) is located in New Jersey 10 km west of the Atlantic Ocean. Routine meteorological monitoring at the station has consisted of a single meteorological tower 120 m high and instrumented at the 10-m, 46-m, and 116-m levels. An analysis of 5 yr of data from this tower showed the OCNGS is affected by an ocean breeze approx. 1 day out of 4 during May through August. This suggested the need for meteorological monitoring in addition to the single met tower at OCNGS. As a result of the 1985 OCNGS meteorological monitoring study, GPU Nuclear established an ocean breeze monitoring network in the fall of 1986. It is a permanent part of OCNGS meteorological monitoring and consists of the same sites as used in the 1985 field study. Meteorological towers are located at the ocean site, the inland site, and at OCNGS. The ocean tower is 13 m (43 ft) high, the inland tower 10 m (33 ft), and the OCNGS tower 116 m (380 ft). Wind speed, wind direction, and temperature are measured on each tower; delta-temperature is also measured on the main tower. The instruments are calibrated in the spring, summer, and fall. The network is operated and maintained by GPU Nuclear Environmental Controls. The ocean breeze monitoring network and meteorological information system forms the basis for including the effects of the ocean breeze in OCNGS emergency off-site dose assessment.

  10. Dynamical analysis of sea-breeze hodograph rotation in Sardinia

    NASA Astrophysics Data System (ADS)

    Moisseeva, N.; Steyn, D. G.

    2014-09-01

    This study investigates the diurnal evolution of sea-breeze rotation over an island in the mid-latitudes. Earlier research on sea-breezes in Sardinia shows that the onshore winds around various coasts of the island exhibit both the theoretically predicted clockwise rotation as well as seemingly anomalous anti-clockwise rotation. A non-hydrostatic fully compressible numerical model (WRF) is used to simulate wind fields on and around the island on previously-studied sea-breeze days and is shown to accurately capture the circulation on all coasts. Diurnal rotation of wind is examined and patterns of clockwise and anti-clockwise rotation are identified. A dynamical analysis is performed by extracting individual forcing terms from the horizontal momentum equations. Analysis of several regions around the island shows that the direction of rotation is a result of a complex interaction between near-surface and synoptic pressure gradient, Coriolis and advection forcings. An idealized simulation is performed over an artificial island with dramatically simplified topography, yet similar dimensions and latitude to Sardinia. Dynamical analysis of the idealized case reveals a rather different pattern of hodograph rotation to the real Sardinia, yet similar underlying dynamics. The research provides new insights into the dynamics underlying sea-breeze hodograph rotation, especially in coastal zones with complex topography and/or coastline.

  11. Dynamical analysis of sea-breeze hodograph rotation in Sardinia

    NASA Astrophysics Data System (ADS)

    Moisseeva, N.; Steyn, D. G.

    2014-12-01

    This study investigates the diurnal evolution of sea-breeze (SB) rotation over an island at the middle latitudes. Earlier research on sea breezes in Sardinia shows that the onshore winds around various coasts of the island exhibit both the theoretically predicted clockwise rotation as well as seemingly anomalous anticlockwise rotation. A non-hydrostatic fully compressible numerical model (WRF) is used to simulate wind fields on and around the island on previously studied sea-breeze days, and is shown to capture the circulation on all coasts accurately. Diurnal rotation of wind is examined, and patterns of clockwise and anticlockwise rotation are identified. A dynamical analysis is performed by extracting individual forcing terms from the horizontal momentum equations. Analysis of several regions around the island shows that the direction of rotation is a result of a complex interaction between near-surface and synoptic pressure gradient, Coriolis and advection forcings. An idealized simulation is performed over an artificial island with dramatically simplified topography yet similar dimensions and latitude to Sardinia. Dynamical analysis of the idealized case reveals a rather different pattern of hodograph rotation to the real Sardinia, yet similar underlying dynamics. The research provides new insights into the dynamics underlying sea-breeze hodograph rotation, especially in coastal zones with a complex topography and/or coastline.

  12. Sea breezes and advective effects in southwest James Bay

    NASA Technical Reports Server (NTRS)

    Mckendry, Ian; Roulet, Nigel

    1994-01-01

    Observations from a transect extending 100 km inland during the Northern Wetlands Study (NOWES) in 1990 show that the sea breeze develops on approximately 25% of days during summer and may penetrate up to 100 km inland on occasions. The sea breeze exhibits a marked diurnal clockwise rotation as a result of the Coriolis effect along the unobstructed coastline. The marine advective effect is shown to depend on gradient wind direction. With northwesterly upper level flow the sea breeze tends to be northeasterly in direction and is associated with decreased temperatures and vapor pressure deficits (VPD). With southwesterly upper level flow the sea breeze tends to have a southeasterly direction and less effect on temperatures and VPD. This is attributed to shorter residence times of air parcels over water. For two cases, Colorado State University mesoscale model simulations show good agreement with surface wind observations and suggest that under northwesterly gradient flow, Bowen ratios are increased in the onshore flow along western James Bay, while during southwesterly gradient flow these effects are negligible. These results have implications for the interpretation of local climate, ecology, and hydrology as well as land-based and airborne turbulent flux measurements made during NOWES.

  13. Land- and sea-surface impacts on local coastal breezes

    NASA Astrophysics Data System (ADS)

    Veron, D. E.; Hughes, C.; Gilchrist, J.; Lodise, J.; Goldman, W.

    2014-12-01

    The state of Delaware has seen significant increases in population along the coastline in the past three decades. With this increase in population have come changes to the land surface, as forest and farmland has been converted to residential and commercial purposes, causing changes in the surface roughness, temperature, and land-atmosphere fluxes. There is also a semi-permanent upwelling center in the spring and summer outside the Delaware Bay mouth that significantly changes the structure of the sea surface temperature both inside and outside the Bay. Through a series of high resolution modeling and observational studies, we have determined that in cases of strong synoptic forcing, the impact of the land-surface on the boundary layer properties can be advected offshore, creating a false coastline and modifying the location and timing of the sea breeze circulation. In cases of weak synoptic forcing, the influence of the upwelling and the tidal circulation of the Delaware Bay waters can greatly change the location, strength, and penetration of the sea breeze. Understanding the importance of local variability in the surface-atmosphere interactions on the sea breeze can lead to improved prediction of sea breeze onset, penetration, and duration which is important for monitoring air quality and developing offshore wind power production.

  14. A 7-Yr Climatological Study of Land Breezes over the Florida Spaceport.

    NASA Astrophysics Data System (ADS)

    Case, Jonathan L.; Wheeler, Mark M.; Manobianco, John; Weems, Johnny W.; Roeder, William P.

    2005-03-01

    Seven years of wind and temperature data from a high-resolution network of 44 towers at the Kennedy Space Center and Cape Canaveral Air Force Station were used to develop an objective method for identifying land breezes, which are defined as seaward-moving wind shift lines in this study. The favored meteorological conditions for land breezes consisted of surface high pressure in the vicinity of the Florida peninsula, mainly clear skies, and light synoptic onshore flow and/or the occurrence of a sea breeze during the afternoon preceding a land breeze. The land breeze characteristics are examined for two events occurring under different weather regimes-one with light synoptic onshore flow and no daytime sea breeze, and another following a daytime sea breeze under a prevailing offshore flow. Land breezes were found to occur over east-central Florida in all months of the year and had varied onset times and circulation depths. Land breezes were most common in the spring and summer months and least common in the winter. The average onset times were 4-5 h after sunset from May to July and 6.5-8 h after sunset from October to January. Land breezes typically moved from the west or southwest during the spring and summer, from the northwest in the autumn, and nearly equally from all directions in the winter. Shallow land breezes (<150-m depth) were typically not associated with the afternoon sea breeze and behaved like density currents, exhibiting the largest temperature decreases and latest onset times. Deep land breezes (>150-m depth) were most often preceded by an afternoon sea breeze, had the smallest horizontal temperature gradients, and experienced a mean onset time that is 4 h earlier than that of shallow land breezes.

  15. The Clinical/Practicum Experience in Professional Preparation: Preliminary Findings

    ERIC Educational Resources Information Center

    Ralph, Edwin George; Walker, Keith; Wimmer, Randy

    2008-01-01

    The authors synthesize preliminary findings from an interdisciplinary study of the practicum/clinical phase of undergraduate pre-service education in the professions. Early data analysis identified similarities and differences across disciplines in terms of: (a) the terminology describing each practicum program, (b) the programs' key…

  16. Burning out during the Practicum: The Case of Teacher Trainees

    ERIC Educational Resources Information Center

    Kokkinos, Constantinos M.; Stavropoulos, George

    2016-01-01

    The purpose of the present study was to empirically examine the link between practicum-related stressors, perceived general practicum stress, personal variables (i.e. general and teaching self-efficacy, epistemological beliefs, conceptions about teaching and learning, and trait anxiety) and burnout dimensions in a sample of 174 Greek student…

  17. Examining Perception of Competency through Practicum Competencies Outline

    ERIC Educational Resources Information Center

    Esposito, Giovanna; Freda, Maria Francesca; Bosco, Valentina

    2015-01-01

    Purpose: This study aims to examine the self-perceived competencies of 231 Italian students enrolled in a psychological degree program and involved in a practicum. It analyzes the subjective perception of the competences that students expect to develop, acknowledge as developed and that might be inferred from tasks performed during the practicum;…

  18. Peer Observation and Reflection in the ELT Practicum

    ERIC Educational Resources Information Center

    Day, Richard R.

    2013-01-01

    The purpose of this study was to determine if peer observation (PO) in an ELT practicum for graduate students led to reflective teaching. The 15 students in the practicum taught EFL at two universities in rural Thailand in eight-week intensive courses. Five questions were investigated: (1) Did PO help the students engage in reflective teaching?…

  19. Practicum and Internship: Textbook for Counseling and Psychotherapy.

    ERIC Educational Resources Information Center

    Boylan, John C.; And Others

    The stated purpose of this text is to assist supervisors and practicum students and interns in their practicum/internship training. This book contains theoretical components which are valuable and essential to the training of student counselors and psychotherapists. In addition to the theoretical aspects presented, training activities germane and…

  20. Organizing a Practicum and Internship Program in Counselor Education.

    ERIC Educational Resources Information Center

    Pitts, James H.

    1992-01-01

    Describes procedures for organizing a practicum and internship program in counselor education. Issues discussed include the role of the coordinator; practicum and internship sites; orientation and application procedures; supervision; communication with sites, students, and supervisors; and liability insurance. Conclusion notes that additional…

  1. National Depression Screening Day: An Undergraduate Practicum Experience

    ERIC Educational Resources Information Center

    Kay, Theresa S.; Rangel, Dianna K.

    2009-01-01

    Several authors have described the many benefits of undergraduate practica, how to organize an undergraduate practicum experience, and different undergraduate practicum activities. This article provides a description of the process of organizing and implementing National Depression Screening Day at a university campus as an undergraduate practicum…

  2. Preservice Science Teachers Reflect on Their Practicum Experiences

    ERIC Educational Resources Information Center

    Koc, Isil

    2012-01-01

    The practicum provides an opportunity for preservice teachers to apply knowledge and skills in actual classroom settings. Thus, it serves as a central component of virtually all teacher education programmes. This study focused the views of 16 preservice science teachers on their practicum experiences. Individual interviews were made to construct a…

  3. Rehabilitation Counseling Practicum: A National Survey of Design and Implementation

    ERIC Educational Resources Information Center

    Dalgin, Rebecca Spirito; Bruch, Lori A.; Barber, Gerianne

    2010-01-01

    This national study documents current processes and practices used in the master's level rehabilitation counseling practicum such as type of supervision provided, training setting, activities related to rehabilitation skill development, written documentation used during practicum, and use of microskills training. Results are described in relation…

  4. Great Expectations: The TESOL Practicum as a Professional Learning Experience

    ERIC Educational Resources Information Center

    Canh, Le Van

    2014-01-01

    The practicum as a learning opportunity for prospective teachers of ESL or EFL remains underexplored. Most of the studies that have been documented in the TESOL practicum literature were conducted in either North America or a few Asian contexts with novice teachers. In this study the author used diaries by five Vietnamese EFL student teachers as…

  5. Preservice Science Teachers Reflect on Their Practicum Experiences

    ERIC Educational Resources Information Center

    Koc, Isil

    2012-01-01

    The practicum provides an opportunity for preservice teachers to apply knowledge and skills in actual classroom settings. Thus, it serves as a central component of virtually all teacher education programmes. This study focused the views of 16 preservice science teachers on their practicum experiences. Individual interviews were made to construct a

  6. Research on Teaching Practicum--A Systematic Review

    ERIC Educational Resources Information Center

    Lawson, Tony; Çakmak, Melek; Gündüz, Müge; Busher, Hugh

    2015-01-01

    The aim of the present study is to conduct a systematic review research which focuses on research studies into the school practicum. In order to identify the main issues and also to provide a contemporary picture of practicum, 114 studies published on the topic are reviewed and analysed in terms of: (i) aims, (ii) main participants, (iii)…

  7. Loose among the Literati: Wired Writers and the Virtual Practicum

    ERIC Educational Resources Information Center

    Owen, Trevor; Takaki, Sudha

    2005-01-01

    This article discusses another ancillary project of the Writers In Electronic Residence's (WIER) program, "The Virtual Practicum," which provides online practice teaching placements to pre-service candidates. WIER offered its first virtual practicum in 1989 through the former Faculty of Education, University of Toronto, and has since expanded to…

  8. Forget about Theory--Practice Is All? Student Teachers' Learning in Practicum

    ERIC Educational Resources Information Center

    Hascher, Tina; Cocard, Yves; Moser, Peter

    2004-01-01

    In 1999, all student teachers at secondary I level at the University of Bern who had to undertake an internship were asked to participate in a study on learning processes during practicum: 150 students and their mentors in three types of practicum participated--introductory practicum (after the first half-year of studies), intermediate practicum

  9. A numerical study of nocturnal sea breezes: Prefrontal gravity waves in the compensating flow and inland penetration of the sea-breeze cutoff vortex

    SciTech Connect

    Weiming Sha ); Kawamura, Takeshi ); Ueda, Hiromasa )

    1993-04-15

    It is demonstrated in this numerical study that prefrontal perturbations may be triggered by a penetrating sea-breeze head into an existing nocturnal temperature inversion. The perturbations consist of the lower-layer wavelike perturbation and the upper-wave motion, both of which are manifested as rotor streaming. However, these prefrontal gravity waves take the form of the weak transient waves of a depression trapped in the ambient compensating flow field. The sea-breeze head dissipates as it penetrates inland into the nocturnal temperature inversion. At midnight, a horizontal vortex is completely detached from the feeder flow of the sea breeze. This isolated horizontal vortex is identified as the sea-breeze cutoff vortex. It is shown that the sea-breeze cutoff vortex may be evolved from a dissipating sea-breeze head. After the sea-breeze cutoff vortex is formed, it propagates farther inland as an isolated wave-type disturbance. Examination of the force balance suggests that the inertia and radiative energy loss are dominant in the processes of the sea-breeze cutoff vortex. 50 refs., 7 figs.

  10. Operation of the breeze tunnel to determine mass extinction coefficients

    SciTech Connect

    Sehmel, G.A.; Bonfante, R.; Catalano, E.; Rouse, W.G.; Banks, D.R.

    1993-06-01

    The breeze tunnel at the Edgewood Research, Development and Engineering Center (ERDEC) at Aberdeen Proving Ground, Maryland, is a unique facility for determining the efficacy of released smoke/obscurants in flowing air as a function of controlling variables. Optimum material feed characteristics and generator operating conditions can be determined. The facility allows investigation of the effects of different generator operating variables, airborne concentrations, and airborne particle sizes on mass extinction coefficients. The breeze tunnel is now available for Department of Defense (DoD) trials. During trials in the breeze tunnel, obscurants have been released from the compact-disc-generator, the IR-Log generator, and the XM56 generator. Obscurant release rates have ranged from an instantaneous puff to a continuous release of 10 lb/min. Extinction can be measured in the visual, infrared, and millimeter ranges of the electromagnetic spectrum. Experimental conditions allow calculation of mass extinction coefficients as a function of generator variables, including material release rates. Average mass extinction coefficients address attenuation from obscurants, both single primary particles and aggregates.

  11. Aerosol lofting from sea breeze during the Indian Ocean Experiment

    NASA Astrophysics Data System (ADS)

    Verma, S.; Boucher, O.; Venkataraman, C.; Reddy, M. S.; Müller, D.; Chazette, P.; Crouzille, B.

    2006-04-01

    This work was carried out to understand the mechanisms leading to lofting and large-scale advection of aerosols over the Indian Ocean region due to interaction of the sea breeze with the northeast monsoon winds along the west coast of India. European Centre for Medium-Range Weather Forecasts (ECMWF) wind fields for the months of February and March 1999 were analyzed at various times of day. Intense sea breeze activity was observed at 1200 UT (1730 local time) along the west coast of India with average intensity larger in March than in February. The sea breeze was seen to extend inland deeper in March than in February. Lofting of air observed as high as 800 hPa (approximately 2 km above sea level) could lead to entrainment of aerosols into the free troposphere and long-range transport. Upward motion of air was observed everywhere along the west coast of India (from 8° to 20°N), on average higher in March than in February, because of convergence between the sea breeze and the synoptic-scale flow. A region of intense lofting of air and well-defined convergence was observed along the coast of the Karnataka region (12°-16°N). A simulation with a general circulation model nudged with ECMWF data indicated that the intrusion of marine air masses with low concentrations of organic matter is seen as deep as 64 km inland in the evening (1500 UT). Intrusion of the sea-salt plume is seen to a maximum distance of around 200 km from 1500 until 2300 UT. A well-developed lofted layer of aerosols as high as 3 km was also simulated during sea breeze activity along the west coast of India. The general circulation model simulation shows a clear diurnal evolution of the vertical profile of the aerosol extinction coefficient at Goa but fails to reproduce several features of the lidar observations, for example, the marked diurnal variability of the upper layers between 1 and 3 km. However, the model simulates a diurnal cycle at the surface (0-0.7 km) that is not apparent in lidar measurements. The model simulates long-range transport and captures the lofted plume downwind of the west coast of India. However, there was a 1-2 day delay in the model transport of lofted aerosols at higher layers to Hulule, 700 km downwind of India, when compared to lidar observations.

  12. Inclusion of the ocean breeze in Oyster Creek emergency off-site dose assessment

    SciTech Connect

    Heck, W.

    1986-01-01

    The Oyster Creek Nuclear Generating Station (OCNGS) is located 6 mi west of the Atlantic Ocean. From spring through late summer, atmospheric transport in the vicinity of OCNGS is periodically affected by the ocean breeze. The ocean breeze produces large differences in wind direction within the OCNGS emergency planning zone during the morning to evening hours. In addition, trajectory reversals can occur near the ocean breeze front. These two characteristics of the ocean breeze must be taken into account when interpreting results from conventional atmospheric dispersion models. The purpose of the study was to determine the flow characteristics of the ocean breeze and to apply these characteristics to an emergency preparedness implementing procedure (EPIP). The EPIP would be used to determine the radiological plume impact region if an accidental release occurred during an ocean breeze.

  13. Problematizing the Practicum to Integrate Practical Knowledge

    NASA Astrophysics Data System (ADS)

    Melville, Wayne; Campbell, Todd; Fazio, Xavier; Stefanile, Antonio; Tkaczyk, Nicholas

    2014-10-01

    This article examines the influence of a practicum teaching experience on two pre-service science teachers. The research is focused on examining a practicum in a secondary science department that actively promotes the teaching and learning of science as inquiry. We investigated the process through which the pre-service science teachers integrated their practical knowledge, and examined this in the context of the quantified reformed instruction they enacted. Using a mixed methods design, we have quantified these pre-service science teachers' practice using the Reformed Teaching Observation Protocol (Piburn et al. 2000), in concert with a narrative methodology drawn from in-depth interviews. Our analysis of the data indicates two important conclusions. The first is the importance of a consistently reformed image of science education being presented and practiced by both science teacher educators and cooperating teachers. The second is the recognition that a consistently reformed image may not be sufficient, of itself, to challenge pre-service teachers' views of science education. Pre-service teachers appear to be heavily influenced by their biographies and own science education. Consequently, it appears the extent to which a pre-service teacher identifies problems of teaching and learning, and then works toward possible resolution, influences their progress in shaping reformed views of science education.

  14. Impact of lake breezes on ozone and nitrogen oxides in the Greater Toronto Area

    NASA Astrophysics Data System (ADS)

    Wentworth, G. R.; Murphy, J. G.; Sills, D. M. L.

    2015-05-01

    Meteorological and air quality datasets from summertime (May to September, 2010-2012) were analysed in order to assess the influence of lake-breeze circulations on pollutant levels in the Greater Toronto Area (GTA). While previous estimates of the frequency of summer days experiencing lake breezes range between 25 and 32 % for the GTA, a simple algorithm using surface meteorological observations suggested Lake Ontario breezes occurred on 56% of summer days, whereas a more reliable multiplatform approach yielded a frequency of 74%. Data from five air quality stations across the GTA were used to compare air quality on days during which a lake-breeze circulation formed ("lake breeze days") versus days when one did not ("non-lake breeze days"). Average daytime O3 maxima were 13.6-14.8 ppb higher on lake breeze days relative to non-lake breeze days. Furthermore, the Ontario Ambient Air Quality Criteria (AAQC) for 1-h average O3 (80 ppb) and 8-h average O3 (65 ppb) were exceeded only on lake breeze days and occurred on a total of 30 and 54 days throughout the study period, respectively. A causal link between lake-breeze circulations and enhanced O3 was identified by examining several days in which only some of the air quality sites were inside the lake-breeze circulation. O3 mixing ratios at sites located within the circulation were at least 30 ppb higher than sites outside the circulation, despite similar temperatures, cloud conditions and synoptic regimes across the region. Rapid O3 increases were concurrent with the arrival of the lake-breeze front, suggesting O3-rich air from over the lake is being advected inland throughout the day. Lake-breeze circulations were found to have less impact on nitrogen oxide (NOx) levels. Morning NOx was greater on lake breeze days, probably due to the stagnant conditions favourable for lake breeze formation. During the late afternoon, only inland sites experience increased NOx on lake breeze days, likely as a result of being downwind from near-shore city centres.

  15. Modeling the impact of bay breeze circulations on nitrogen deposition

    NASA Astrophysics Data System (ADS)

    Loughner, C. P.; Tzortziou, M.; Pickering, K. E.; Duffy, M.; Satam, C.

    2012-12-01

    Atmospheric gases and aerosols are deposited into watersheds and estuarine waters contributing to water quality degradation and affecting estuarine and coastal biogeochemical processes. Pollution that is deposited onto land can be transported into storm drains, groundwater, streams, and rivers where it is eventually transported into near-shore waters. Air quality models, which simulate the chemical transformation, atmospheric transport, and deposition of pollutants onto land and surface waters, can play an integral role in forecasting water quality, preparing water quality regulations and providing information on the sources of nutrients and pollutants for advanced estuarine biogeochemical models. Previous studies have found that Chesapeake Bay breezes cause localized areas of high air pollution concentrations and that model simulations with horizontal resolutions coarser than about 5 km are not able to capture bay breeze circulations. Here, we investigate the importance of capturing bay breeze circulations with high resolution model simulations (horizontal resolution of 1.33 km) to accurately simulate the spatial and temporal variability of nitrogen deposition into the Chesapeake Bay watershed. Nitrogen deposition into the watershed from air quality model simulations are compared with observed wet deposition and estimated dry deposition rates from the National Acid Deposition Program (NADP) and the Clean Air Status and Trends Network (CASTNET), respectively. The model simulation is conducted for the months of June and July 2011. Two concurrent air and water quality field campaigns, DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) and GeoCAPE-CBODAQ (Geostationary Coastal and Air Pollution Events-Chesapeake Bay Oceanographic Campaign with DISCOVER-AQ), were conducted in July 2011, and data obtained from these field experiments are used to evaluate the model simulations.

  16. Sea breezes and coastal jets in southeastern Spain

    NASA Astrophysics Data System (ADS)

    Kottmeier, Christoph; Palacio-Sese, Pablo; Kalthoff, Norbert; Corsmeier, Ulrich; Fiedler, Franz

    2000-11-01

    Sea breezes and low-level jet (LLJ) streams are studied in the region between the Eastern Castilla-La Mancha and the Mediterranean coast of southeastern Spain. The simplified concept of two-dimensional terrain and meteorological conditions explains the spatially and diurnally varying wind system consistently. The changes, as a function of time, height and distance to the coast, of temperature, pressure and wind as well as of certain observed phenomena, such as LLJs and strongly baroclinic zones, result from the response of the mesoscale flow to differential heating. Wind changes are generally found to be consistent with mesoscale changes in geostrophic winds as estimated from station pressure measurements. The LLJs mark the penetration depth of the sea breeze during daytime, where a baroclinic zone develops at the transition between continental air masses and marine air masses, typically at a distance of 150 km from the coast. The analysis is based on aerological data and ground-based measurements from the European Field Experiment in a Desertification Threatened Area (EFEDA) experiments in 1991 and 1994 as well as on 3-hourly data from three synoptic stations of the Spanish meteorological network for April-October in 1991 and 1994. After corrections were made for instrument errors and atmospheric tides, diurnal pressure variations document vertically integrated mass fluxes perpendicular to the coast. Amplitudes of diurnal pressure and temperature changes scatter significantly and are largest in midsummer. They are weakly correlated and pressure amplitudes remain large in spring and autumn when diurnal temperature changes are reduced. With about 6 h delay to the regular development of onshore winds at the coast during daytime, pronounced wind peaks are observed over the eastern plateau at Albacete and Barrax in the late afternoon. Case studies show that they are accompanied by development of baroclinically driven LLJs, whereas winds at Tomelloso, 220-km inland, show less pronounced diurnal changes and are beyond the normal penetration distance of sea breezes.

  17. Accuracy of Wind Prediction Methods in the California Sea Breeze

    NASA Astrophysics Data System (ADS)

    Sumers, B. D.; Dvorak, M. J.; Ten Hoeve, J. E.; Jacobson, M. Z.

    2010-12-01

    In this study, we investigate the accuracy of measure-correlate-predict (MCP) algorithms and log law/power law scaling using data from two tall towers in coastal environments. We find that MCP algorithms accurately predict sea breeze winds and that log law/power law scaling methods struggle to predict 50-meter wind speeds. MCP methods have received significant attention as the wind industry has grown and the ability to accurately characterize the wind resource has become valuable. These methods are used to produce longer-term wind speed records from short-term measurement campaigns. A correlation is developed between the “target site,” where the developer is interested in building wind turbines, and a “reference site,” where long-term wind data is available. Up to twenty years of prior wind speeds are then are predicted. In this study, two existing MCP methods - linear regression and Mortimer’s method - are applied to predict 50-meter wind speeds at sites in the Salinas Valley and Redwood City, CA. The predictions are then verified with tall tower data. It is found that linear regression is poorly suited to MCP applications as the process produces inaccurate estimates of the cube of the wind speed at 50 meters. Meanwhile, Mortimer’s method, which bins data by direction and speed, is found to accurately predict the cube of the wind speed in both sea breeze and non-sea breeze conditions. We also find that log and power law are unstable predictors of wind speeds. While these methods produced accurate estimates of the average 50-meter wind speed at both sites, they predicted an average cube of the wind speed that was between 1.3 and 1.18 times the observed value. Inspection of time-series error reveals increased error in the mid-afternoon of the summer. This suggests that the cold sea breeze may disrupt the vertical temperature profile, create a stable atmosphere and violate the assumptions that allow log law scaling to work.

  18. Morning transition case between the land and the sea breeze regimes

    NASA Astrophysics Data System (ADS)

    Jiménez, Maria A.; Simó, Gemma; Wrenger, Burkhard; Telisman-Prtenjak, Maja; Guijarro, Jose A.; Cuxart, Joan

    2016-05-01

    An experimental field campaign took place in September 2013 near the coastline in the southeastern Campos basin in the island of Mallorca to characterize experimentally the transition between the sea and the land breezes and to further study the successful cases with the corresponding high-resolution numerical simulations. Favorable weather conditions were only found for one episode that comprised a well-formed nocturnal land breeze, followed by the morning transition to sea breeze until noon the next day, when incoming clouds switched off the breeze regime. To analyse this transition between land and sea breezes, the official network of stations is used, supplemented by a portable station close to the shore and soundings of temperature (taken by a captive balloon and remotely controlled multicopter). These data are used to check the goodness of the corresponding simulation at a horizontal resolution of 1 km. Model and observations see similarly both regimes and the transition, showing some differences in the timing and the details in the surface layer. This transient event is analyzed in terms of phases, going consecutively through land breeze, phase previous to the sea breeze, when land heating starts, but it is still colder than the sea, the preparatory phase when the land becomes warmer than the sea, and the development phase when the breeze front progresses inland.

  19. Hot Jupiter breezes: time-dependent outflows from extrasolar planets

    NASA Astrophysics Data System (ADS)

    Owen, James E.; Adams, Fred C.

    2016-03-01

    We explore the dynamics of magnetically controlled outflows from hot Jupiters, where these flows are driven by UV heating from the central star. In these systems, some of the open field lines do not allow the flow to pass smoothly through the sonic point, so that steady-state solutions do not exist in general. This paper focuses on this type of magnetic field configuration, where the resulting flow becomes manifestly time-dependent. We consider the case of both steady heating and time-variable heating, and find the time-scales for the corresponding time variations of the outflow. Because the flow cannot pass through the sonic transition, it remains subsonic and leads to so-called breeze solutions. One manifestation of the time variability is that the flow samples a collection of different breeze solutions over time, and the mass outflow rate varies in quasi-periodic fashion. Because the flow is subsonic, information can propagate inwards from the outer boundary, which determines, in part, the time-scale of the flow variability. This work finds the relationship between the outer boundary scale and the time-scale of flow variations. In practice, the location of the outer boundary is set by the extent of the sphere of influence of the planet. The measured time variability can be used, in principle, to constrain the parameters of the system (e.g. the strengths of the surface magnetic fields).

  20. Sea breeze Initiated Rainfall over the east Coast of India during the Indian Southwest Monsoon

    SciTech Connect

    Simpson, M; Warrior, H; Raman, S; Aswathanarayana, P A; Mohanty, U C; Suresh, R

    2006-09-05

    Sea breeze initiated convection and precipitation is investigated along the east coast of India during the Indian southwest monsoon season. The sea breeze circulations are observed approximately 70 to 80% of the days during the summer months (June to August) along the Chennai coast. Observations of average sea breeze wind speeds are stronger at a rural location as compared to the wind speeds observed inside the urban region of Chennai. The sea breeze circulation is shown to be the dominant mechanism for initiating rainfall during the Indian southwest monsoon season. Roughly 80% of the total rainfall observed during the southwest monsoon over Chennai is directly related to the convection initiated by sea breeze circulation.

  1. Practicum Class Supervision in CACREP-Accredited Counselor Training Programs: A National Survey.

    ERIC Educational Resources Information Center

    Prieto, Loreto R.

    1998-01-01

    Counselor training programs were surveyed regarding their use of practicum class supervision. Descriptive findings concerning course logistics, supervisory style, and typical activities used in the practicum class supervision are presented. (Author)

  2. A Climatological study of sea breezes in the Red Sea region of Saudi Arabia

    NASA Astrophysics Data System (ADS)

    Khan, Basit A.; Abualnaja, Yasser

    2015-04-01

    Long term near surface observations from 20 stations, buoys, high resolution model data from European Centre for Medium-Range Weather Forecasts (ECMWF) and Weather Research and Forecasting Modeling System (WRF(ARW)) are used to investigate the climatology of sea breezes over the Eastern side of the Red Sea region. Additionally, satellite data from second-generation Meteosat (MSG) and Radar soundings have also been analyzed to investigate major characteristics of sea breeze flow. Sea breezes blow under anticyclonic synoptic conditions, weak gradient winds, intense radiation, relatively cloud-free skies and strong near surface sea - land thermal gradient. In order to identify sea breeze signal a set of criteria based on synoptic condition, diurnal reversal of wind direction and thermal gradient has been devised. Results show that sea breezes in this region occur almost all year, but this meso-scale phenomenon is most frequent in summer months (May to August) when it occurs for almost half of the summer days. The onset of the sea breeze in this region is about 0800 LST (Local Standard Time). The sea breeze decays after 1700 LST, however, the timing of the onset and decay could be affected by season, sea-land thermal gradient, topography, sea-land orientation and the direction and strength of the prevailing wind. The depth of the predicted inflow layer reaches 1 kilometer while the height of sea breeze head may reach 3 kilometers. The rocky mountain range of Al-Sarawat, east of the Red Sea coast, restricts the inland propagation of sea breeze and significantly affects the structure of the flow. A detailed process analysis of the available data is being conducted to better understand the Sea Breeze and its effect on the local meteorology.

  3. Detection and Prediction of the Delaware Summertime Sea/Bay Breeze

    NASA Astrophysics Data System (ADS)

    Veron, D. E.; Hughes, C.

    2011-12-01

    The Delaware Bay/Sea Breeze is a thermally driven coastal circulation that has significant impacts along Delaware's coastline. The passage of a sea breeze front has a cooling effect which often moderates summer heat. Pollutants can be transported by a sea breeze circulation affecting air quality. In addition, this frequently occurring local circulation is strong enough and of enough vertical and horizontal extent to effect offshore wind turbines. The potential moderation of weather, air quality, and offshore wind resource all have significant environmental and economic impacts which are important to a coastal population which has nearly doubled in the last two decades. An analysis of weather radar (NEXRAD) images is used as an initial method for detecting a sea/bay breeze front. These case study days are then used to develop an objective sea breeze detection scheme based on changes in the observed conditions at twenty-one meteorological stations run by the Delaware Environmental Observing System and the National Data Buoy Center. Three distinct classes of sea breeze circulation (classic, dew-point and weak) are derived based on location, penetration distance, temperature drop, and time of onset. In general, based on nine years of data from 2000 to 2009, sea/bay breezes along the Delaware coast are found to occur in the summer 63% of the time at coastal stations and 20% at inland stations. These same data are used to develop a local sea breeze prediction scheme for the Delaware ocean coast. Details of the return flow and structure of the sea breeze at high spatial and temporal resolution are investigated using a regional atmospheric model, WRF. Characterization of Delaware's sea/bay breezes using multiple data sources and locations creates a more complete understating of the impact of this low-level circulation on the local climate, and will be useful in understanding how things may change in the future as local land-use and global climate changes.

  4. Idealized WRF model sensitivity simulations of sea breeze types and their effects on offshore windfields

    NASA Astrophysics Data System (ADS)

    Steele, C. J.; Dorling, S. R.; von Glasow, R.; Bacon, J.

    2012-06-01

    The behaviour and characteristics of the marine component of sea breeze cells have received little attention relative to their onshore counterparts. Yet there is a growing interest and dependence on the offshore wind climate from, for example, a wind energy perspective. Using idealized model experiments, we investigate the sea breeze circulation at scales which approximate to those of the Southern North Sea, a region of major ongoing offshore wind farm development. We also contrast the scales and characteristics of the pure and the little known corkscrew and backdoor sea breeze types, where the type is pre-defined by the orientation of the synoptic scale flow relative to the shoreline. We find, crucially, that pure sea breezes, in contrast to corkscrew and backdoor types, can lead to substantial wind speed reductions offshore and that the addition of a second eastern coastline emphasises this effect through generation of offshore "calm zones". The offshore extent of all sea breeze types is found to be sensitive to both the influence of Coriolis acceleration and to the boundary layer scheme selected. These extents range, for example for a pure sea breeze produced in a 2 m s-1 offshore gradient wind, from 10 km to 40 km between the Mellor-Yamada-Nakanishi-Niino and the Yonsei State University schemes, respectively. The corkscrew type restricts the development of a backdoor sea breeze on the eastern coast and is also capable of traversing a 100 km offshore domain even under high gradient wind speed (>15 m s-1) conditions. Realistic variations in sea surface skin temperature during the sea breeze season do not significantly affect the circulation, suggesting that a thermal contrast is only needed as a precondition to the development of the sea breeze. We highlight how sea breeze impacts on circulation need to be considered in order to improve the accuracy of assessments of the offshore wind energy climate.

  5. 34 CFR 535.12 - In what circumstances may an IHE waive the training practicum requirement?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... practicum requirement? 535.12 Section 535.12 Education Regulations of the Offices of the Department of....12 In what circumstances may an IHE waive the training practicum requirement? An IHE participating under this program may waive the requirement in § 535.11 for a training practicum for a master's...

  6. Practicum Assessment of Culturally and Linguistically Diverse Early Childhood Pre-Service Teachers

    ERIC Educational Resources Information Center

    Nuttall, Joce; Ortlipp, Michelle

    2012-01-01

    The practicum is an integral component of teacher education courses, but culturally and linguistically diverse pre-service teachers can face particular struggles in meeting assessment requirements on the practicum in early childhood settings. This paper reports from a small, exploratory study of early childhood practicum handbooks from four…

  7. The Suggested Characteristics of School-Based Counseling Practicum in Counselor Education

    ERIC Educational Resources Information Center

    Ozyurek, Ragip; Cam, Sabahattin; Atici, Meral

    2007-01-01

    This article covers the characteristics that are supposed to be present in the practicum of school-based counseling in Turkey. In the light of the related literature, 11 characteristics are determined. These are the place of practicum, the importance of official permission for the school, the characteristics of practicum schools and its school…

  8. Practicum Teachers' Perceptions of Success in Relation to Self-Efficacy (Perceived Competence)

    ERIC Educational Resources Information Center

    Anderson, Kirk; Walker, Keith; Ralph, Edwin

    2009-01-01

    How do student teachers gain confidence in their teaching abilities as part of their school-based practicum experience while increasing their self-efficacy from the successes of their practicum? To understand this question better, we explored preservice teachers' post-practicum accounts of experiences of success in relation to efficacy (Bandura,…

  9. 34 CFR 535.12 - In what circumstances may an IHE waive the training practicum requirement?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... practicum requirement? 535.12 Section 535.12 Education Regulations of the Offices of the Department of....12 In what circumstances may an IHE waive the training practicum requirement? An IHE participating under this program may waive the requirement in § 535.11 for a training practicum for a master's...

  10. A finite-element sea-breeze model

    NASA Astrophysics Data System (ADS)

    Chang, L. P.

    A two-dimensional finite element planetary boundary layer model was developed and successfully applied to the simulation of the sea-breeze phenomenon. The model solves the horizontal equations for conservation of momentum, the hydrostatic, the thermodynamic energy, and the continuity equations by the Galerkin finite element method. Profiles of the vertical exchange coefficients for momentum and heat are obtained from the O'Brien exchange-coefficient profile, together with Deardorff's formula for computing the height of the planetary boundary layer. The Coriolis effect is built in but the gradient of any quantity except for the synoptic-scale pressure in the alongshore direction is assumed to vanish. The synoptic pressure gradient is represented by the geostrophic wind relation and is assumed to stay steady during the integration process. A modified Crank-Nicholson time differentiating scheme is used to linearize the resulting algebraic system of equations in the iterative time integration process.

  11. Sea-land breeze in a coastal city and its effect on pollen transport.

    PubMed

    Gassmann, María I; Pérez, Claudio F; Gardiol, Jesús M

    2002-08-01

    This paper presents a statistical study of the sea-land breeze in Mar del Plata (Argentina) to characterize the periods of the year when the breeze affects pollen transport, particularly the dispersion of airborne Poaceae pollen between urban and rural areas. In order to analyse the sea breeze circulation, hourly data from coastal, urban and rural meteorological stations were used. The effect of the sea breeze on the particulate matter was analysed from syncronic hourly airborne pollen records from an urban and a rural area. A sea-land breeze appeared between spring and early autumn in the hours of greatest diurnal warming. Results showed that the surface wind direction most probably associated with this phenomenon is NE and E, the time of occurrence shifting to new directions following the counterclockwise rotation, according to theoretical models for the Southern Hemisphere. Poaceae emission takes place in the morning, during the hours of maximum insolation. However, after the occurrence of the breeze, a rise in pollen concentration between 2000 hours and 0200 hours is detected because of pollen reentrainment brought about by air recirculation. The results showed that breeze transport brings a regional component to pollen assemblage. PMID:12194004

  12. Idealized WRF model sensitivity simulations of sea breeze types and their effects on offshore windfields

    NASA Astrophysics Data System (ADS)

    Steele, C. J.; Dorling, S. R.; von Glasow, R.; Bacon, J.

    2013-01-01

    The behaviour and characteristics of the marine component of sea breeze cells have received little attention relative to their onshore counterparts. Yet there is a growing interest and dependence on the offshore wind climate from, for example, a wind energy perspective. Using idealized model experiments, we investigate the sea breeze circulation at scales which approximate to those of the southern North Sea, a region of major ongoing offshore wind farm development. We also contrast the scales and characteristics of the pure and the little known corkscrew and backdoor sea breeze types, where the type is pre-defined by the orientation of the synoptic scale flow relative to the shoreline. We find, crucially, that pure sea breezes, in contrast to corkscrew and backdoor types, can lead to substantial wind speed reductions offshore and that the addition of a second eastern coastline emphasises this effect through generation of offshore "calm zones". The offshore extent of all sea breeze types is found to be sensitive to both the influence of Coriolis acceleration and to the boundary layer scheme selected. These extents range, for example for a pure sea breeze produced in a 2 m s-1 offshore gradient wind, from 0 km to 21 km between the Mellor-Yamada-Nakanishi-Niino and the Yonsei State University schemes respectively. The corkscrew type restricts the development of a backdoor sea breeze on the opposite coast and is also capable of traversing a 100 km offshore domain even under high along-shore gradient wind speed (>15 m s-1) conditions. Realistic variations in sea surface skin temperature and initializing vertical thermodynamic profile do not significantly alter the resulting circulation, though the strengths of the simulated sea breezes are modulated if the effective land-sea thermal contrast is altered. We highlight how sea breeze impacts on circulation need to be considered in order to improve the accuracy of both assessments of the offshore wind energy climate and forecasts of wind energy output.

  13. Working with youth: reflections on a community practicum.

    PubMed

    Watchorn, R

    1998-09-01

    This paper was part of my third-year Bachelor of Nursing Degree assessment for the community health module. I hope that the insights from my practicum in the drug and alcohol service will engender a deeper sensitivity and militate against judgmental or directive nursing care in my future nursing practice. Reflection from my community practicum and theoretical constructs are used in this paper to focus on the notions of deviance, labelling, role-taking, and their contribution to the formation of an individual's identity. PMID:10095492

  14. Air quality in the Athens basin during sea breeze and non-sea breeze days using laser-remote-sensing technique

    NASA Astrophysics Data System (ADS)

    Kambezidis, H. D.; Weidauer, D.; Melas, D.; Ulbricht, M.

    It is well established both from theory and experimental evidence that sea breeze plays an advert role on air pollution situation over a coastal urban area, specially during summer. This also applies to Athens area. Ground-based measurements in the area have shown that northerly wind flows during summertime play a depollution role in the Greater Athens Area. A wind field over a city is responsible for a mechanism forming a particular profile of the air pollutant considered; such air pollutant profiles were found in Athens for first time to a height of 1200 m in the Atmospheric Boundary Layer during an experimental campaign in the summer of 1994. The paper gives profiles of ozone and nitrogen dioxide on sea-breeze and non-sea-breeze days with possible explanations. Air quality aspects within the first 1500 m of the Atmospheric Boundary Layer over Athens are also discussed.

  15. Sea breeze forcing of estuary turbulence and air-water CO2 exchange

    NASA Astrophysics Data System (ADS)

    Orton, Philip M.; McGillis, Wade R.; Zappa, Christopher J.

    2010-07-01

    The sea breeze is often a dominant meteorological feature at the coastline, but little is known about its estuarine impacts. Measurements at an anchored catamaran and meteorological stations along the Hudson River and New York Bay estuarine system are used to illustrate some basic characteristics and impacts of the feature. The sea breeze propagates inland, arriving in phase with peak solar forcing at seaward stations, but several hours later at up-estuary stations. Passage of the sea breeze front raises the water-to-air CO2 flux by 1-2 orders of magnitude, and drives turbulence comparable to spring tide levels in the upper meter of the water column, where most primary productivity occurs in this highly turbid system. Modeling and observational studies often use remotely-measured winds to compute air-water fluxes (e.g., momentum, CO2), and this leads to a factor of two flux error on sea breeze days during the study.

  16. Sea Breezes over the Red Sea: Affect of topography and interaction with Desert Convective Boundary Layer

    NASA Astrophysics Data System (ADS)

    Khan, Basit A.; Stenchikov, Georgiy; Abualnaja, Yasser

    2014-05-01

    Thermodynamic structure of sea-breeze, its interaction with coastal mountains, desert plateau and desert convective boundary layer have been investigated in the middle region of the Red Sea around 25°N, at the Western coast of Saudi Arabia. Sea and land breeze is a common meteorological phenomenon in most of the coastal regions around the world. Sea-Breeze effects the local meteorology and cause changes in wind speed, direction, cloud cover and sometimes precipitation. The occurrence of sea-breeze, its intensity and landward propagation are important for wind energy resource assessment, load forecasting for existing wind farms, air pollution, marine and aviation applications. The thermally induced mesoscale circulation of sea breeze modifies the desert Planetary Boundary Layer (PBL) by forming Convective Internal Boundary Layer (CIBL), and propagates inland as a density current. The leading edge of the denser marine air rapidly moves inland undercutting the hot and dry desert air mass. The warm air lifts up along the frontal boundary and if contains enough moisture a band of clouds is formed along the sea breeze front (SBF). This study focuses on the thermodynamic structure of sea-breeze as it propagates over coastal rocky mountain range of Al-Sarawat, east of the Red Sea coast, and the desert plateau across the mountain range. Additional effects of topographical gaps such as Tokar gap on the dynamics of sea-land breezes have also been discussed. Interaction of SBF with the desert convective boundary layer provide extra lifting that could further enhance the convective instability along the frontal boundary. This study provides a detailed analysis of the thermodynamics of interaction of the SBF and convective internal boundary layer over the desert. Observational data from a buoy and meteorological stations have been utilized while The Advanced Research WRF (ARW) modeling system has been employed in real and 2D idealized configuration.

  17. Identifying and tracking plumes affected by an ocean breeze in support of emergency preparedness

    SciTech Connect

    Schwartz, P.E.

    1989-01-01

    To better support emergency preparedness, General Public Utilities (GPU) Nuclear has investigated the frequency of occurrence of the mesoscale ocean breeze at the Oyster Creek Nuclear Generating Station (OCNGS). Through the analysis of the horizontal wind direction and temperature patterns, simple identification of the ocean breeze along with a plume tracking procedure has been developed and incorporated into the site's emergency plant to better safeguard the public with sophisticated protective action measures in case of a nonroutine release. The ocean breeze will frequently produce wind trajectory fields within the plant's emergency planning zone that are different from the normal gradient wind flow. This could greatly alter proper protective action measures since most utilities employ straight-line trajectory air dispersion models. Knowledge of the existence of the ocean breeze and the location of the ocean breeze front become important in the results generated from the straight-line Gaussian dose calculation methodology and in the further development of a more complex dose assessment model. This paper describes the verification and existence of the sea breeze phenomenon and the incorporation of its effects into the OCNGS emergency plan.

  18. An Observational Study of Sea Breezes Along the Alaskan Beaufort Sea Coast: Part I.

    NASA Astrophysics Data System (ADS)

    Kozo, Thomas L.

    1982-07-01

    Though sea breezes are not often associated with the arctic, atmospheric environmental data collected in August 1976, 1977 and 1979 along the Beaufort Sea Coast of Alaska offer both circumstantial and direct evidence of the existence of sea breezes at 70°N latitude. To estimate total atmospheric boundary layer turning, a two-dimensional least squares technique is used to calculate a three hourly geostrophic wind (above the atmospheric boundary layer) with data from irregularly distributed surface pressure stations for simultaneous comparison to surface wind data. Results indicated the average turning of the wind from above the boundary layer to the surface was 120° on sea breeze days. Rotary spectra from time series data of surface winds measured at offshore and inshore sites have shown the horizontal extent of sea breeze influence to include at least a 20 km zone centered on the coastline. The sea breeze is largely responsible for the increased persistence of surface onshore (northeasterly and easterly) winds documented in August historical data for the Alaskan Beaufort Sea Coast.The data base for arctic sea breeze studies has been enhanced by the discovery and development of the Prudhoe Bay oil fields (mid-sixties). Since the nearshore ocean current flow along the Alaskan Beaufort Sea Coast is primarily wind driven, a direct application to oil spill trajectories in lagoons and embayments exists.

  19. Preparing Undergraduates for Careers: An Argument for the Internship Practicum

    ERIC Educational Resources Information Center

    Bay, Jennifer

    2006-01-01

    Traditionally, college English departments have resisted granting undergraduate internships a central place in their curricula. Many of these departments do little more than allow students to pursue internships as loosely supervised independent studies. An internship practicum course such as Purdue University's, however, enables students to…

  20. The Impact of Facebook in Teaching Practicum: Teacher Trainees' Perspectives

    ERIC Educational Resources Information Center

    Goktalay, Sehnaz Baltaci

    2015-01-01

    Prompt feedback is one of the critical components of teacher education programs. To reap the greatest benefit from the teaching practicum process, the quality of feedback as well as its implementation by stakeholders, supervisors, cooperating teachers, and teacher trainees, takes on great importance. The purpose of this study is to examine how Web…

  1. Explicating Practicum Program Theory: A Case Example in Human Ecology

    ERIC Educational Resources Information Center

    Chandler, Kathryn M. M.; Williamson, Deanna L.

    2013-01-01

    This study explicated the theory underpinning the Human Ecology Practicum Program offered in the Department of Human Ecology at the University of Alberta. The program has operated for 40 years but never been formally evaluated. Using a document analysis, focus group and individual interviews, and a stakeholder working group, we explored

  2. Pre-Service Music Teachers' Concerns before a Practicum Stint

    ERIC Educational Resources Information Center

    Ramanaidu, Ramesh Rao; Wellington, Edna; Chew, Lim Zek; Hassan, Nik Rozalind Nik

    2014-01-01

    A crucial element in any teacher training programme is teaching practice. Terms such as practicum, refers to teaching practice which is embedded in the teacher training programme itself. Such stints become more challenging for a teacher, for their teaching would be observed and assessed by a teacher educator. The purpose of this study was to…

  3. An Evaluation of an Intensive Pre-Practicum Training Program.

    ERIC Educational Resources Information Center

    Miller, H. R.; Shields, E. E.

    An intensive week-long pre-practicum training program was developed, conducted, and evaluated. The objectives of the study were to investigate the feasibility of reducing the initial non-functioning period in a counselor training program and to explore the effects on the cognitive and behavioral functioning of beginning counselors. Eight beginning…

  4. Carrying Out Collaborative Action Research in a Practicum

    ERIC Educational Resources Information Center

    Ho, Belinda

    2013-01-01

    To help in-service English teachers improve their teaching practices and pupils' learning opportunities through an enquiry-oriented and cooperative approach, the author carried out collaborative action research during a practicum in a teacher education course at a university in Hong Kong. This article describes how the collaborative research…

  5. Assessing the Performance in EFL Teaching Practicum: Student Teachers' Views

    ERIC Educational Resources Information Center

    Merç, Ali

    2015-01-01

    This study aims to find out whether or not pre-service EFL teachers are satisfied with the way their performance in teaching practice is measured. A questionnaire was developed to elicit student teachers' views related to the components of the measurement policies employed in the two practicum courses at Anadolu University English Language Teacher…

  6. Cooperating Teachers' Roles and Responsibilities in a MATESOL Practicum

    ERIC Educational Resources Information Center

    Payant, Caroline; Murphy, John

    2012-01-01

    Responding to a gap in relevant literatures, this study explores cooperating teachers' perceptions of their roles and responsibilities as contributors to the practicum experiences of preservice teachers of English as a second language who were pursuing a master's degree. Research tools featured focus group and individual interviews with 11…

  7. Counselor Effectiveness As A Function of Varied Practicum Training Techniques.

    ERIC Educational Resources Information Center

    Snyder, John F.; And Others

    This study investigated the differential effects of various training techniques on the counselor effectiveness of beginning practicum students. It was hypothesized that there would be significant differences between the subjects pre- and post-test scores on both the Affective Sensitivity Scale (ASS) and on the Counselor Verbal Response Scale…

  8. Analysis of Discourse in a TESL Practicum Class.

    ERIC Educational Resources Information Center

    Johnson, Patricia

    A pilot study of discourse in a practicum reading class for instruction in English as a second language examines miscommunication between non-native English speakers. Teachers and their students read transcripts of episodes from classroom discussions and wrote line-by-line analyses of what they understood was being said. Similarities and…

  9. Enhancing Practicum Supervision with Asynchronous and Synchronous Technologies

    ERIC Educational Resources Information Center

    Teo, Yiong Hwee; McNamara, Sue; Romeo, Geoff; Gronn, Donna

    2015-01-01

    Three video/web conferencing technologies (Pocket Camcorder, Skype, Adobe Connect) were used in regional schools in Australia to determine whether the technologies are appropriate for the needs of the university supervisor, trainee teachers and supervising teachers with regard to practicum teaching placements. Findings revealed that Pocket…

  10. Explicating Practicum Program Theory: A Case Example in Human Ecology

    ERIC Educational Resources Information Center

    Chandler, Kathryn M. M.; Williamson, Deanna L.

    2013-01-01

    This study explicated the theory underpinning the Human Ecology Practicum Program offered in the Department of Human Ecology at the University of Alberta. The program has operated for 40 years but never been formally evaluated. Using a document analysis, focus group and individual interviews, and a stakeholder working group, we explored…

  11. Using Creativity to Make Practicum a Transformative Experience

    ERIC Educational Resources Information Center

    Shepard, David S.; Brew, Leah

    2013-01-01

    Students enter their practicum experience with the assumption that they will learn the skills needed to help clients. However, growth in counseling can be bidirectional; both the client and the student-counselor can benefit. The purpose of this article is to describe a creative arts assignment that helps students express how a client changed them,…

  12. Self-Actualization Level as Predictor of Practicum Supervision Effectiveness.

    ERIC Educational Resources Information Center

    Deming, Anne L.

    1980-01-01

    Counselor growth in self-actualization was not affected by the level of self-actualization of the supervisor. Counseling students gained in self-actualization whether or not they were enrolled in a practicum and regardless of the level of self-actualization of their supervisors. (Author)

  13. An Alternative Practicum Model for Teaching and Learning

    ERIC Educational Resources Information Center

    Belliveau, George

    2007-01-01

    In this article, I have examined how a drama-based practicum had an impact on learning in meaningful ways for preservice teachers and grade-6 students during a three-week alternative teaching placement. Because the nature of drama-based teaching and learning invites participants to think and feel with ideas and emotions continually intersecting, I…

  14. A Descriptive Exploration of Practicum Supervision in Jamaica

    ERIC Educational Resources Information Center

    Stupart, Yvette V.

    2010-01-01

    A marked increase in the number counseling programs in Jamaica and the concomitant need for practicum supervision warrants an exploration of the practice of supervision within the context. Besides, the multicultural literature within counseling supervision focuses predominantly on diverse identities within the United States and other developed…

  15. Structuring Effective Practicum Experiences for Pre-Service Teachers

    ERIC Educational Resources Information Center

    Wyss, Vanessa L.; Siebert, Cathy J.; Dowling, Karen A.

    2012-01-01

    Practicum experiences are an extremely critical component to any teacher education program. Yet how pre-service teachers are included in classrooms can be organized in multiple ways and is influenced by many factors. Structurally, universities must consider school schedules and student course offering schedules. More important is ensuring

  16. Supervising the Extended Practicum: A Contextual Approach. Monograph No. 4.

    ERIC Educational Resources Information Center

    Ralph, Edwin G.

    Conflicts or disagreements between student teachers and university supervisors in the Extended Practicum program, College of Education, University of Saskatchewan, are often attributed to factors such as "personality clash," laziness, stubbornness, authoritarianism, prejudice, stereotyping, dogmatism, or malice. In reality, many of these problems…

  17. Play in Supervision: Exploring the Sandtray with Beginning Practicum Students

    ERIC Educational Resources Information Center

    Markos, Patricia A.; Coker, J. Kelly; Jones, W. Paul

    2007-01-01

    Clinical supervision is a fundamental component of counselor education training. Counselor Educators play an active and dynamic role in helping beginning practicum students conceptualize their work with clients. The use of expressive arts in counseling has been shown to be effective in creating a deeper level and meaning to counselor and client…

  18. Using Cognitive Interventions with Counseling Practicum Students during Group Supervision.

    ERIC Educational Resources Information Center

    Fitch, Trey J.; Marshall, Jennifer L.

    2002-01-01

    Argues that students in counseling practicum courses experience many self-defeating thoughts and anxieties which can impede their performance as new counselors and can have a negative impact on the supervision process. Outlines innovative methods used by cognitive therapists to address this anxiety and presents a model for counselor educators to…

  19. Preparing Undergraduates for Careers: An Argument for the Internship Practicum

    ERIC Educational Resources Information Center

    Bay, Jennifer

    2006-01-01

    Traditionally, college English departments have resisted granting undergraduate internships a central place in their curricula. Many of these departments do little more than allow students to pursue internships as loosely supervised independent studies. An internship practicum course such as Purdue University's, however, enables students to

  20. Kidney Cysts

    MedlinePlus

    ... fluid-filled sac. There are two types of kidney cysts. Polycystic kidney disease (PKD) runs in families. In PKD, the ... place of the normal tissue. They enlarge the kidneys and make them work poorly, leading to kidney ...

  1. Kidney Transplant

    MedlinePlus

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  2. Kidney Biopsy

    MedlinePlus

    ... More Information American Kidney Fund National Kidney Foundation Kidney and Urologic Disease Organizations Many organizations provide support ... Disease Organizations​​ . (PDF, 345 KB) Alternate Language URL Kidney Biopsy Page Content On this page: What is ...

  3. Kidney Failure

    MedlinePlus

    ... upcoming screening events. Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... support of AKF. Kidney Action Day Kidney Action Day Learn about our signature outreach event. Free health ...

  4. a Finite-Element Sea-Breeze Model.

    NASA Astrophysics Data System (ADS)

    Chang, Lang-Ping

    1981-06-01

    A 2-D finite-element planetary boundary-layer model has been developed and successfully applied to the simulation of the sea-breeze phenomenon. The model solves the horizontal equations for conservation of momentum, the hydrostatic, the thermodynamic energy, and the continuity equations by the Galerkin finite-element method. Profiles of the vertical exchange coefficients for momentum and heat are obtained from the O'Brien exchange-coefficient profile, together with Deardorff's formula for computing the height of the planetary boundary layer. The Coriolis effect is built in but the gradient of any quantity except for the synoptic-scale pressure in the alongshore direction is assumed to vanish. The synoptic pressure gradient is represented by the geostrophic wind relation and is assumed to stay steady during the integration process. The surface temperature over water is fixed, while the perturbation temperature over land is given as a sinusoidal function in time to simulate the differential heating mechanism. Different roughness heights are assigned to land and water surfaces to characterize the horizontal surface inhomogeneities. A modified Crank-Nicholson time differentiating scheme is used to linearize the resulting algebraic system of equations in the iterative time integration process.

  5. An observational and numerical study of the sea breeze in the eastern Cantabrian coast (Spain)

    NASA Astrophysics Data System (ADS)

    Ander Arrillaga, Jon; Yagüe, Carlos; Sastre, Mariano; Román-Cascón, Carlos

    2015-04-01

    The sea breeze and its characteristics are well studied in the Mediterranean coast of the Iberian Peninsula, but not so in the Cantabrian coast, perhaps due to a lower prevalence of stable synoptic conditions during the summer period. However, it was found that the sea breeze was one of the main drivers of pollution episodes in the industrialised metropolitan area of Bilbao. In addition, an accurate prediction of this mesoscale phenomenon is fundamental for forecasting hot spells with predominant southerly gradient winds, especially in the eastern half of the Cantabrian Sea, during which can be recorded up to 40 °C close to the shore. In this work, an automated method is used for selecting sea breeze days [1], based in 6 filters that evaluate the observed synoptic and surface conditions in the Eastern Cantabrian, provided by the Basque and Spanish meteorological agencies. The main objective is to make an observational and numerical analysis of this phenomenon in the aforementioned region, focusing on the predictability of the Sea Breeze Index (SBI) [2] and the evolution of turbulent parameters such as the Turbulent Kinetic Energy (TKE). Numerical simulations are performed using the mesoscale model Weather Research and Forecast (WRF). The selection method fails filtering a non-sea-breeze day owing to a shift hint in the wind direction, which is predominantly southerly making temperature reach around 40 °C in one of the meteorological stations. This day is simulated both with and without updating the Sea Surface Temperature (SST). The latter simulation leads to a more unrealistic situation. Furthermore, the Planetary Boundary Layer (PBL) height evolution given by the model is compared for a sea breeze and a non-sea-breeze day, concluding that the establishment of a maritime flux results in a lower diffusive capacity in the lower atmosphere, which would lead to a higher concentration of pollutants close to the surface. It is also found that the cause of the establishment of the sea breeze is the sharp decline in the value of the simulated SBI, not the value itself. Nonetheless, the complex coastline and topography cause evident spatial differences in this region, which are well represented in the outputs of the model as well as in the observed surface variables. [1] Borne, K. & Chen, D. (1998). A method for finding sea breeze days under stable synoptic conditions and its application to the Swedish west coast. Int. J. Climatol., 18, 901-914. [2] Simpson, J. E. (1994). Sea Breeze and Local Winds. Cambridge University Press, 234pp.

  6. Sea/land breeze climatological characteristics along the northern Croatian Adriatic coast

    NASA Astrophysics Data System (ADS)

    Prtenjak, M. Telišman; Grisogono, B.

    2007-11-01

    Climatological characteristics along the northern Croatian Adriatic coast have been examined for nine meteorological stations for the summertime sea/land breeze circulation. The stations considered are Pula-airport, Opatija, Rijeka, Senj, Malinska, Rijeka-airport, Mali Lošinj, Rab and Zadar. The hourly surface measurements at each station from June to September for the period 1991 2004 as well as the radiosoundings in Zadar (from 2002 to 2004) were used for the analysis. A dataset with the sea/land breeze days was formed according to the several criteria. The mean daily maxima of both air and sea surface temperatures were more influenced by the large scale disturbances toward north (e.g. in Rijeka or Opatija) compared to the values for e.g. Zadar. Furthermore, the influence of the large scale disturbances diminished toward the south concerning the sea land temperature difference only at the stations placed at Rijeka Bay and Velebit channel. The strongest sea breeze was found at Pula-airport and the most frequent ones at Opatija and Zadar. At Senj the rarest, the weakest and the shortest sea breeze was observed. The climatological records of wind speed and air-sea temperature difference (Δ T) showed for Opatija, Malinska and Zadar that the maximum measured wind speed is around 4.5 °C confirming the nonlinear relationship between the sea breeze speeds and the Δ T during the day. At most stations, the clockwise rotation of the hodographs prevails which is typical for the Northern hemisphere due to Coriolis force, with the exception at Senj and Malinska. While the hodographs for Pula, Rijeka-airport and Mali Lošinj display a later onset of the prevailing sea breeze because of the interaction among several sea breeze circulations, the results for Opatija, Zadar and Senj show considerably distorted hodographs because of the nearby channeling of the air flow.

  7. Numerical study of the evolution of a sea-breeze front under two environmental flows

    NASA Astrophysics Data System (ADS)

    Liang, Zhaoming; Wang, Donghai

    2015-06-01

    The evolution of a sea-breeze front (SBF) in parallel and offshore environmental flows was investigated by using high-resolution simulations of two SBF cases from the Bohai Bay region, China. The results show that the combination of a distinct vertical wind shear caused by the sea-breeze circulation with a neutral or slightly stable atmospheric stratification associated with the thermal inner boundary layer promoted the occurrence and maintenance of a Kelvin-Helmholtz billow (KHB). In a parallel environmental flow, the SBF evolved into a few connected segments because of the inhomogeneity of the sea-breeze direction and intensity as it penetrated inland. A significant upward vertical motion occurred at the two ends of the SBF segment owing to the sea-breeze convergence and was accelerated by the KHB. The KHB made a notable contribution to the intensity at the ends of the segment, whereas the intensity at the middle segment was primarily attributed to the convergence between the sea breeze and the parallel flow. In the offshore environmental flow, the clockwise rotation of the offshore flow varying with time increased the downstream convergence of the interface between the sea breeze and the offshore flow and pushed the downstream convergence zone to an orientation consistent with the offshore flow. The air parcels ascending from the downstream part of the SBF were continuously lifted by the downstream convergence zone during their advection, leading to a significant downstream development of the SBF. The significant upward vertical motion caused by the sea-breeze convergence behind the upstream end of the SBF was shifted to the upstream end of the SBF by the KHB, which enhanced the intensity of the upstream end of the SBF.

  8. A theoretical study of the interactions of urban breeze circulation with mountain slope winds

    NASA Astrophysics Data System (ADS)

    Ganbat, Gantuya; Seo, Jaemyeong Mango; Han, Ji-Young; Baik, Jong-Jin

    2015-08-01

    A large number of cities around the world are located in or near complex terrain. In these regions, urban breeze circulation and mountain/valley winds are observed. Understanding interactions between urban breeze circulation and mountain/valley winds is important in a view of mesoscale atmospheric dynamics and urban air pollution. In this study, we theoretically examine the interactions of urban breeze circulation with mountain slope winds in the context of the response of the atmosphere to specified thermal forcing. Starting from linearized governing equations in two dimensions, analytical solutions for perturbation vertical velocity, horizontal velocity, buoyancy, and kinematic pressure are obtained. Then, the analytical solutions are used to examine the interactions. Urban breeze circulation and mountain slope winds evolve with time due to time-varying thermal forcing that has steady and diurnal components, and they interact with each other. Asymmetric flows are developed over the urban and mountain areas. In the daytime, low-level converging flows induced by urban heating (urban breeze) and those induced by mountain heating (upslope winds) interfere with each other, resulting in weakened flows in the mountain-side urban area and on the urban-side mountain slope. The transition from the upslope wind to downslope wind on the urban-side mountain slope occurs earlier and thus the downslope wind persists longer compared with the case that has mountain thermal forcing only. In the nighttime, flows become strong in the region between the urban center and the mountain center due to the additive interaction of the downslope wind with the urban breeze, but the flow intensity weakens with time because of weak nighttime urban heating. In the nighttime, converging flows on the plain-side urban area and the downslope wind on the rural-side mountain slope are weakened. The degree of the interactions of urban breeze circulation with mountain slope winds is shown to depend on the intensities of urban and mountain thermal forcings.

  9. WARM BREEZE FROM THE STARBOARD BOW: A NEW POPULATION OF NEUTRAL HELIUM IN THE HELIOSPHERE

    SciTech Connect

    Kubiak, M. A.; Bzowski, M.; Sokół, J. M.; Swaczyna, P.; Grzedzielski, S.; Alexashov, D. B.; Izmodenov, V. V.; Möbius, E.; Leonard, T.; Fuselier, S. A.; McComas, D. J.; Wurz, P.

    2014-08-01

    We investigate the signals from neutral helium atoms observed in situ from Earth orbit in 2010 by the Interstellar Boundary Explorer (IBEX). The full helium signal observed during the 2010 observation season can be explained as a superposition of pristine neutral interstellar He gas and an additional population of neutral helium that we call the Warm Breeze. The Warm Breeze is approximately 2 times slower and 2.5 times warmer than the primary interstellar He population, and its density in front of the heliosphere is ∼7% that of the neutral interstellar helium. The inflow direction of the Warm Breeze differs by ∼19° from the inflow direction of interstellar gas. The Warm Breeze seems to be a long-term, perhaps permanent feature of the heliospheric environment. It has not been detected earlier because it is strongly ionized inside the heliosphere. This effect brings it below the threshold of detection via pickup ion and heliospheric backscatter glow observations, as well as by the direct sampling of GAS/Ulysses. We discuss possible sources for the Warm Breeze, including (1) the secondary population of interstellar helium, created via charge exchange and perhaps elastic scattering of neutral interstellar He atoms on interstellar He{sup +} ions in the outer heliosheath, or (2) a gust of interstellar He originating from a hypothetic wave train in the Local Interstellar Cloud. A secondary population is expected from models, but the characteristics of the Warm Breeze do not fully conform to modeling results. If, nevertheless, this is the explanation, IBEX-Lo observations of the Warm Breeze provide key insights into the physical state of plasma in the outer heliosheath. If the second hypothesis is true, the source is likely to be located within a few thousand AU from the Sun, which is the propagation range of possible gusts of interstellar neutral helium with the Warm Breeze characteristics against dissipation via elastic scattering in the Local Cloud. Whatever the nature of the Warm Breeze, its discovery exposes a critical new feature of our heliospheric environment.

  10. Aerosol-cloud-land surface interactions within tropical sea breeze convection

    NASA Astrophysics Data System (ADS)

    Grant, Leah D.; Heever, Susan C.

    2014-07-01

    In this study, the influence of aerosols, surface roughness length, soil moisture, and synergistic interactions among these factors on tropical convective rainfall focused along a sea breeze front are explored within idealized cloud-resolving modeling simulations using the Regional Atmospheric Modeling System (RAMS). The idealized RAMS domain setup is representative of the coastal Cameroon rainforest in equatorial Africa. In order to assess the potential sensitivity of sea breeze convection to increasing anthropogenic activity and deforestation occurring in such regions, 27 total simulations are performed in which combinations of enhanced aerosol concentrations, reduced surface roughness length, and reduced soil moisture are included. Both enhanced aerosols and reduced soil moisture are found to individually reduce the precipitation due to reductions in downwelling shortwave radiation and surface latent heat fluxes, respectively, while perturbations to the roughness length do not have a large impact on the precipitation. The largest soil moisture perturbations dominate the precipitation changes due to reduced low-level moisture available to the convection, but if the soil moisture perturbation is more moderate, synergistic interactions between soil moisture and aerosols enhance the sea breeze precipitation. This is found to result from evening convection that forms ahead of the sea breeze only when both effects are present. Interactions between the resulting gust fronts and the sea breeze front locally enhance convergence and therefore the rainfall. The results of this study underscore the importance of considering the aerosol-cloud-land surface system responses to perturbations in aerosol loading and land surface characteristics.

  11. Kidney Disease

    MedlinePlus

    ... version of this page please turn Javascript on. Kidney Disease What is Kidney Disease? What the Kidneys Do Click for more information You have two ... damaged, wastes can build up in the body. Kidney Function and Aging Kidney function may be reduced ...

  12. Breezes Along the Coast of Tamaulipas, Northeastern Mexico: Contribution to the Wind Energy Potencial

    NASA Astrophysics Data System (ADS)

    Orozco, J. M.; Rivas, D.

    2012-12-01

    The near-surface wind along the coast of northeastern Mexico and western Gulf of Mexico, with emphasis on the breeze regime, is characterized. Wind data from the North American Regional Reanalysis (NARR) for the period from 2000 to 2010 are used, which are validated by comparison with surface in-situ observations (weather stations). The validation shows a good agreement between the NARR product and the observations. The preliminary results show that the diurnal frequency associated with breezes has a significant contribution to the variability of the wind in the study area. This suggests that the breeze regime can be important for the wind power generation, and given the extensive coastal plain of Tamaulipas, the implementation of electricity-generation prototypes in the area is possible.

  13. Comprehensive, technology-based clinical education: the "virtual practicum".

    PubMed

    Henderson, J V

    1998-01-01

    This article discusses the application of technology to promote more comprehensive clinical education in the biopsychosocial aspects of primary care. Comprehensive refers to the inclusion, in addition to scientific and technical knowledge, of knowledge that is less easily characterized, quantified, and taught: empathy, intuition, the demonstration of artistry. Clinical education will be increasingly facilitated by the proliferation of computers capable of displaying combinations of text, graphics, video, and sound; broadband networks capable of delivering these multiple media to the home or office; and new methods for using these technologies for education and training. However, current models for technology-based learning are limiting, lagging behind the rapid technological evolution driving our entry into the Information Age. Some recent educational models (Schon's reflection-in-action and reflective practicums [1], Boisot's E-space [2], Kolb's learning cycle [3]) provide for a more comprehensive and complete view of health professional education. This article describes these models in depth and proposes a new model for technology-based clinical training, the "Virtual Practicum," based on them. The Virtual Practicum is illustrated with a new interactive CD-ROM program, dealing with primary care of patients with HIV/AIDS. The concepts presented here are generally useful in thinking about clinical education, regardless of the means used. PMID:9617648

  14. Investigation on the fine structure of sea-breeze during ESCOMPTE experiment

    NASA Astrophysics Data System (ADS)

    Puygrenier, V.; Lohou, F.; Campistron, B.; Saïd, F.; Pigeon, G.; Bénech, B.; Serça, D.

    2005-03-01

    Surface and remote-sensing instruments deployed during ESCOMPTE experiment over the Marseille area, along the Mediterranean coast, were used to investigate the fine structure of the atmospheric boundary layer (ABL) during sea-breeze circulation in relation to pollutant transport and diffusion. Six sea-breeze events are analyzed with a particular focus on 25 June 2001. Advection of cool and humid marine air over land has a profound influence on the daytime ABL characteristics. This impact decreases rapidly with the inland distance from the sea. Nearby the coast (3 km inland), the mixing height Zi rises up to 750 m and falls down after 15:00 (UT) when the breeze flow reaches its maximum intensity. A more classical evolution of the ABL is observed at only 11-km inland where Zi culminates in the morning and stabilizes in the afternoon at about 1000 m height. Fine inspection of the data revealed an oscillation of the sea-breeze with a period about 2 h 47 min. This feature, clearly discernable for 3 days at least, is present in several atmospheric variables such as wind, temperature, not only at the ground but also aloft in the ABL as observed by sodar/RASS and UHF wind profilers. In particular, the mixing height Zi deduced from UHF profilers observations is affected also by the same periodicity. This pulsated sea-breeze is observed principally above Marseille and, at the northern and eastern shores of the Berre pond. In summary, the periodic intrusion over land of cool marine air modifies the structure of the ABL in the vicinity of the coast from the point of view of stability, turbulent motions and pollutants concentration. An explanation of the source of this pulsated sea-breeze is suggested.

  15. Influence of Land-sea Breeze on Air Quality Over Taiwan Coastal Environment

    NASA Astrophysics Data System (ADS)

    Chang, J. S.; Chiang, C.

    2008-12-01

    Taiwan is is an island nation in western Pacific close to Mainland China. As such Land-sea breeze is a natural processes. Many major cities and industrial developments naturally developed near coastal area. As air quality in urban and industrial centers worsened impact on coastal areas increases. Land-sea breeze naturally plays an important role in transport of pollutants to and from polluted regions to the coastal environment. In this study we analyzed a full year of Taiwan EPA monitored hourly data on O3, NOx, CO, CO2, temperature, wind direction and speed to group and identify time and place with significant land-sea breeze phenomenon. We first compare coastal air quality condition with and without land-sea breeze and then use a 3-D regional-scale transport and chemistry model to provide detailed diagnostic interpretations of the coupling of pollution source regions and coastal areas. From this we can clarify when and how land-sea breeze may play a role in determining coastal air quality. Two different subregions of Taiwan are of interest in this study, Taipei and Kaoshiung environments, in the north and south of Taiwan respectively. Taipei is about 30-50 km away from its impacted coastal area while Kaoshiung is directly at and inland of its coastal shore. For Taipei region daytime upper air pollutants can be transported out to sea and then subside and return to the coastal area at night. But under summer severely polluted condition surface Taipei urban pollutants actually extend beyond the coastal area hence at night the return flow only brings back the same air mass. In contrast, Kaoshiung area is almost always under high pollution status. Its domain of influence always extends far beyond the coastal shore. Therefore, with and without land-sea breeze, coastal pollution remains about the same. We shall present detailed 2-D and 3-D data and station by station analyses in support of these findings.

  16. Kidney School

    MedlinePlus

    ... copies? Read our licensing agreement Living Successfully with Kidney Disease People with kidney disease can live long ... Listen Printing multiple copies? Read our licensing agreement Kidneys: How They Work, How They Fail, What You ...

  17. Kidney Problems

    MedlinePlus

    ... our e-newsletter! Aging & Health A to Z Kidney Problems Basic Facts & Information The kidneys are two ... the production of red blood cells. What are Kidney Diseases? For about one-third of older people, ...

  18. Kidney biopsy

    MedlinePlus

    ... through the kidney Connective tissue diseases such as systemic lupus erythematosus Other diseases that may be affecting the kidney, such as diabetes Kidney transplant rejection , if you had a transplant

  19. 78 FR 62300 - Prairie Breeze Wind Energy LLC; Supplemental Notice That Initial Market-Based Rate Filing...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-15

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Prairie Breeze Wind Energy LLC; Supplemental Notice That Initial Market... in the above-referenced proceeding, of Prairie Breeze Wind Energy LLC's application for...

  20. 33 CFR 334.775 - Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ..., Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area. 334.775 Section 334.775 Navigation... RESTRICTED AREA REGULATIONS § 334.775 Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze... from the position latitude 30°20′44″ N., longitude 87°17′18″ W. (near the Naval Air Station, due...

  1. 33 CFR 334.775 - Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area. 334.775 Section 334.775 Navigation... RESTRICTED AREA REGULATIONS § 334.775 Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze... from the position latitude 30°20′44″ N., longitude 87°17′18″ W. (near the Naval Air Station, due...

  2. 33 CFR 334.775 - Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ..., Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area. 334.775 Section 334.775 Navigation... RESTRICTED AREA REGULATIONS § 334.775 Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze... from the position latitude 30°20′44″ N., longitude 87°17′18″ W. (near the Naval Air Station, due...

  3. 33 CFR 334.775 - Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ..., Pensacola Bay, Pensacola and Gulf Breeze, Fla.; naval restricted area. 334.775 Section 334.775 Navigation... RESTRICTED AREA REGULATIONS § 334.775 Naval Air Station Pensacola, Pensacola Bay, Pensacola and Gulf Breeze... from the position latitude 30°20′44″ N., longitude 87°17′18″ W. (near the Naval Air Station, due...

  4. Scrutinising the Final Judging Role in Assessment of Practicum in Early Childhood Initial Teacher Education in New Zealand

    ERIC Educational Resources Information Center

    Zhang, Qilong; Cown, Paula; Hayes, Joanne; Werry, Sue; Barnes, Ruth; France, Lois; TeHau-Grant, Rawhia

    2015-01-01

    Practicum is the cornerstone of teacher education. Triadic assessment of practicum is an established model in early childhood initial teacher education in New Zealand. Based on a phenomenographic study on assessment of practicum, this paper presents a new perspective on triadic assessment. Interview data are collected from 35 participants (20…

  5. The Role of the Prepracticum in Lessening Student Teacher Stress: Student Teachers' Perceptions of Stress during Practicum

    ERIC Educational Resources Information Center

    Danyluk, Patricia

    2013-01-01

    Research on the student teaching practicum indicates that it is a time of enormous stress. The purpose of this study was to gather information from student teachers regarding their perceptions of stress while in the midst of their practicum. The questions were designed to gather information that could be used to create a less stressful practicum.…

  6. The Role of the Prepracticum in Lessening Student Teacher Stress: Student Teachers' Perceptions of Stress during Practicum

    ERIC Educational Resources Information Center

    Danyluk, Patricia

    2013-01-01

    Research on the student teaching practicum indicates that it is a time of enormous stress. The purpose of this study was to gather information from student teachers regarding their perceptions of stress while in the midst of their practicum. The questions were designed to gather information that could be used to create a less stressful practicum.

  7. Early Childhood Practicum Students' Professional Growth in the USA: Areas of Confidence and Concern

    ERIC Educational Resources Information Center

    Wee, Su-Jeong; Weber, Elsa K.; Park, Soyeon

    2014-01-01

    This research examines specific areas of confidence and concern as expressed by 40 American undergraduate early childhood students on a practicum (supervised field-based internships); if their beliefs changed over the course of their practicum, and if prior teaching experience had an impact on their confidence levels. Areas of confidence and

  8. A Database Practicum for Teaching Database Administration and Software Development at Regis University

    ERIC Educational Resources Information Center

    Mason, Robert T.

    2013-01-01

    This research paper compares a database practicum at the Regis University College for Professional Studies (CPS) with technology oriented practicums at other universities. Successful andragogy for technology courses can motivate students to develop a genuine interest in the subject, share their knowledge with peers and can inspire students to

  9. The Teaching Practicum as a Locus of Multi-Leveled, School-Based Transformation

    ERIC Educational Resources Information Center

    El Kadri, Michele Salles; Roth, Wolff-Michael

    2015-01-01

    The teaching practicum is often considered as a compulsory activity for enculturating new members into the teacher community by providing opportunities to experience teaching in action. However, the practicum is rarely conceptualized in terms of its transformative potential. In this study, we report the results of a two-year ethnography study of a…

  10. Students as Evaluators in Practicum: Examining Peer/Self Assessment and Self-Efficacy.

    ERIC Educational Resources Information Center

    Fitzpatrick, Corine

    This study explores peer assessment and self-efficacy in a counseling practicum. Data was gathered on the perceptions of practicum students, in their second year of a master's program, with regard to the counseling competencies of their peers and themselves. Counselor self-efficacy was measured using the Counselor Self-Efficacy Rating Scale.…

  11. Early Childhood Practicum Students' Professional Growth in the USA: Areas of Confidence and Concern

    ERIC Educational Resources Information Center

    Wee, Su-Jeong; Weber, Elsa K.; Park, Soyeon

    2014-01-01

    This research examines specific areas of confidence and concern as expressed by 40 American undergraduate early childhood students on a practicum (supervised field-based internships); if their beliefs changed over the course of their practicum, and if prior teaching experience had an impact on their confidence levels. Areas of confidence and…

  12. Cybersupervision: Further Examination of Synchronous and Asynchronous Modalities in Counseling Practicum Supervision

    ERIC Educational Resources Information Center

    Chapman, Russell A.; Baker, Stanley B.; Nassar-McMillan, Sylvia C.; Gerler, Edwin R.

    2011-01-01

    The authors used an intensive single-subject quantitative design to examine cybersupervision of counseling practicum students in a university setting. Five female supervisees volunteered to receive their required weekly supervision online during a 14-week, semester-long counseling practicum. Following a face-to-face orientation meeting, all…

  13. Do We Need More "Doing" Activities or "Thinking" Activities in the Field Practicum?

    ERIC Educational Resources Information Center

    Lee, Mingun; Fortune, Anne E.

    2013-01-01

    How do MSW students learn new professional skills in the field practicum? Does students' reflection affect the use of other learning activities during the field practicum? Students in field practica participate in activities that involve observation, doing (participatory), and conceptual linkage. In this study of MSW students, conceptual…

  14. "Unruly Pupils" in Pre-Service English Language Teachers' Teaching Practicum Experiences

    ERIC Educational Resources Information Center

    Gao, Xuesong; Benson, Phil

    2012-01-01

    The teaching practicum is a pivotal event for pre-service teachers to experience the transition from being students to being teachers. This paper examines the emergence of "unruly pupils" as a central concern for pre-service English language teachers in their teaching practicum. The inquiry relates the pre-service teachers' perceived challenge of…

  15. Beginner Pre-Service Special Education Teachers' Learning Experience during Practicum

    ERIC Educational Resources Information Center

    Nonis, Karen P.; Jernice, Tan Sing Yee

    2011-01-01

    In Singapore, training for pre-service special education (PSSE) teachers is supported by a ten-week special education teaching (SET) practicum process in special school setting. In the first four weeks of SET practicum PSSE teachers are familiarized with their pupils, class routines, school culture and administrative processes within the school.…

  16. From Learner to Teacher: Practice, Language, and Identity in a Teaching Practicum

    ERIC Educational Resources Information Center

    Trent, John

    2013-01-01

    This paper reports on a qualitative study that investigated the lived experiences of a group of pre-service English language teachers during a teaching practicum in Hong Kong. Multiple, in-depth interviews with student teachers were conducted during a 6-week practicum to understand the students' experiences of becoming teachers. A…

  17. Local and Global--Conflicting Perspectives? The Place of Overseas Practicum in Preservice Teacher Education

    ERIC Educational Resources Information Center

    Cruickshank, Kenneth; Westbrook, Ros

    2013-01-01

    International practicum is disappearing from teacher education programs with the increasing pressures for "local experience". International practicum is seen as too different from local contexts to develop preservice teachers to meet professional standards. This study explores the teaching development of a group of 24 preservice teachers from a…

  18. International Students' Experience of Practicum in Teacher Education: An Exploration through Internationalisation and Professional Socialisation

    ERIC Educational Resources Information Center

    Barton, Georgina M.; Hartwig, Kay A.; Cain, Melissa

    2015-01-01

    This paper explores the practicum experience of international students studying in a teacher education course. Much research has investigated the experience of international students during their degree experience but there is limited research that has addressed the practicum; a key component of teacher education. The research that does exist…

  19. Making Preservice Teachers Better: Examining the Impact of a Practicum in a Teacher Preparation Program

    ERIC Educational Resources Information Center

    Scott, Laron A.; Gentry, Roberta; Phillips, Melissa

    2014-01-01

    Overwhelmingly, preservice teachers indicate a benefit of having a practicum in their teacher preparation program. Yet, with a shortage of highly effective special education teachers, there is limited research about the effectiveness of practicum experiences on preservice special education teacher's preparation. The purpose of this study was…

  20. An Evaluation Study on the Educational Value of Teaching Practicum in Secondary Schools

    ERIC Educational Resources Information Center

    Baek, Sun-Geun; Ham, Eun Hye

    2009-01-01

    The purpose of this study is to evaluate the educational value of teaching practicum in secondary schools. For this purpose, on the basis of literature review and interviews, three evaluation criteria for measuring educational value of teaching practicum are constructed as follows: (1) practical teaching competence, (2) readiness for teacher, and…

  1. Between Signification and Illumination: Unfolding Understandings of an A/r/tographical Turn on Practicum

    ERIC Educational Resources Information Center

    Carter, Mindy R.; Irwin, Rita L.

    2014-01-01

    School associates (SA's), or cooperating teachers (CT's), have arguably been one of the most powerful influences on the teacher candidate's (TC) pre-service experience. For this reason, most studies about the practicum have focused on this relationship. However, while observing one visual art student's practicum as her Faculty…

  2. Issues and Concerns Faced by Undergraduate Language Student Teachers during Teaching Practicum Experiences

    ERIC Educational Resources Information Center

    Ali, Mohd Sofi; Othman, Abdul Jalil; Karim, Abdul Faruk Abdul

    2014-01-01

    This study examined specific issues and concerns faced by Bachelor of Education student teachers majoring in Language and Literature during their 12-week teaching practicum experience. Specifically, three main areas of concerns were examined. They were: (1) specific issues and concerns related to the implementation of teaching practicum faced by…

  3. Student Teachers' Views of Practicums (Teacher Training Placements) in Turkish and English Contexts: A Comparative Study

    ERIC Educational Resources Information Center

    Busher, Hugh; Gündüz, Müge; Cakmak, Melek; Lawson, Tony

    2015-01-01

    How student teachers experience their transformation into serving teachers in the liminal social spaces of the school-based practicum (teaching practice) is of key importance to them, their future students and their educators. The practicum is a challenging experience for student teachers, even with help from university and school-based mentors,…

  4. A Japanese COLT: Analyzing Teaching Performance in a Junior High School Practicum

    ERIC Educational Resources Information Center

    Mitsuo, Sadayuki

    2010-01-01

    The two main purposes of this study were to create a systematic observation instrument in order to obtain clearer and more specific feedback from junior high school teachers about student teachers' teaching performances during their practicum, and to provide a way for junior college, university teachers, student teachers, and practicum supervisors…

  5. From Learner to Teacher: Practice, Language, and Identity in a Teaching Practicum

    ERIC Educational Resources Information Center

    Trent, John

    2013-01-01

    This paper reports on a qualitative study that investigated the lived experiences of a group of pre-service English language teachers during a teaching practicum in Hong Kong. Multiple, in-depth interviews with student teachers were conducted during a 6-week practicum to understand the students' experiences of becoming teachers. A

  6. Meeting Performance-based Training Demands: Accountability in an Intervention-based Practicum.

    ERIC Educational Resources Information Center

    Barnett, David W.; Daly III, Edward J.; Hampshire, Ellen M.; Hines, Nancy Rovak; Maples, Kelly A.; Ostrom, Jennifer K.; Van Buren, Amy E.

    1999-01-01

    Describes accountability methods built into practicums for school psychology trainees. Results of intervention-based services were summed across individual cases developed by trainees as a means of examining the overall effectiveness of the practicum experiences. Outcomes are reported as procedural adherence to the model of service delivery,…

  7. Theory and Practice in the Context of Practicum: The Perspectives of Norwegian Physical Education Student Teachers

    ERIC Educational Resources Information Center

    Standal, Øyvind Førland; Moen, Kjersti Mordal; Moe, Vegard Fusche

    2014-01-01

    Previous studies have found that student teachers value the practicum over other parts of physical education teacher education and that they experience a gap between theory and practice in their education. The purpose of this study was to provide more knowledge about the theory-practice relations in the context of the practicum of physical…

  8. Development of an Instrument Measuring Student Teachers' Perceived Stressors about the Practicum

    ERIC Educational Resources Information Center

    Kokkinos, Constantinos M.; Stavropoulos, George; Davazoglou, Aggeliki

    2016-01-01

    The Stressors about Practicum Inventory, a self-report measure of perceived stressors about the practicum, was designed to provide those responsible for the training of primary school teachers with an informative, inexpensive and psychometrically sound tool. The present study describes the development and validation of the 94-item inventory in a…

  9. The Residence Teaching Practicum Internship at Ben-Gurion University of the Negev.

    ERIC Educational Resources Information Center

    Hoz, Ron; Peretz, Arna

    1996-01-01

    Describes an internship program at Israel's Ben-Gurion University, examining the role of practicums in teacher education, noting the work of mentors and interns, and discussing internship methods at selected North American universities. Suggestions are made to enhance the effectiveness of Ben-Gurion's Residence Practicum Internship. (SM)

  10. Integrating Theory and Practice in the Pre-Service Teacher Education Practicum

    ERIC Educational Resources Information Center

    Allen, Jeanne Maree; Wright, Suzie Elizabeth

    2014-01-01

    This article reports on a study into student teachers' perceptions about their professional development during practicum. Framed within a symbolic interactionist perspective, the study examined to what extent, and how effectively, one group of student teachers was able to integrate theory and practice during a three-week practicum in the…

  11. Local and Global--Conflicting Perspectives? The Place of Overseas Practicum in Preservice Teacher Education

    ERIC Educational Resources Information Center

    Cruickshank, Kenneth; Westbrook, Ros

    2013-01-01

    International practicum is disappearing from teacher education programs with the increasing pressures for "local experience". International practicum is seen as too different from local contexts to develop preservice teachers to meet professional standards. This study explores the teaching development of a group of 24 preservice teachers from a

  12. Research Practicum in Rehabilitation Counselor Education: Learning Research through Hands-on Experience

    ERIC Educational Resources Information Center

    Miller, Susan M.; Rintelmann, Kristen

    2007-01-01

    The purpose of this paper is to discuss the research thesis as an educational tool and to propose the research practicum as an alternative to the thesis in rehabilitation counselor education programs. The research practicum has the potential to become an important learning opportunity which will provide rehabilitation counseling students with…

  13. Theory and Practice in the Context of Practicum: The Perspectives of Norwegian Physical Education Student Teachers

    ERIC Educational Resources Information Center

    Standal, yvind Frland; Moen, Kjersti Mordal; Moe, Vegard Fusche

    2014-01-01

    Previous studies have found that student teachers value the practicum over other parts of physical education teacher education and that they experience a gap between theory and practice in their education. The purpose of this study was to provide more knowledge about the theory-practice relations in the context of the practicum of physical

  14. Teaching ESL in an Unfamiliar Context: International Students in a North American MA TESOL Practicum.

    ERIC Educational Resources Information Center

    Polio, Charlene; Wilson-Duffy, Carol

    1998-01-01

    Investigates the concerns and difficulties of international students from non-English speaking countries during the Teaching English as a Second Language (TESOL) practicum component of a master's TESOL program. Interviews with students before, during, and after the practicum and examination of their journals and assignments indicated that they had…

  15. A Database Practicum for Teaching Database Administration and Software Development at Regis University

    ERIC Educational Resources Information Center

    Mason, Robert T.

    2013-01-01

    This research paper compares a database practicum at the Regis University College for Professional Studies (CPS) with technology oriented practicums at other universities. Successful andragogy for technology courses can motivate students to develop a genuine interest in the subject, share their knowledge with peers and can inspire students to…

  16. Nuclear science and engineering and health physics fellowships: 1984 description. Research areas for the practicum

    SciTech Connect

    Not Available

    1984-01-01

    This booklet describes available research areas at participating centers where a practicum may be held under the Nuclear Science and Engineering and Health Physics Fellowship program. After a year of graduate study each fellow is expected to arrange for a practicum period at one of the participating centers.

  17. Solitary Kidney

    MedlinePlus

    ... Institute, Inc., Kidney School National Kidney Foundation MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... Organizations​​ . (PDF, 345 KB)​​​​​ Alternate Language URL Solitary Kidney Page Content On this page: What is a ...

  18. ORGANOTIN TOXICITY STUDIES CONDUCTED WITH SELECTED MARINE ORGANISMS AT EPA'S ENVIRONMENTAL RESEARCH LABORATORY, GULF BREEZE, FLORIDA

    EPA Science Inventory

    Studies on effect of bis(tri-n-butyltin)oxide (TBTO) and other organotins on marine species have been conducted at the U.S. Environmental Protection Agency's laboratory at Gulf Breeze, Florida, since 1983. First studies were done on two species of algae, Skeletonema costatum and ...

  19. Air pollution studies in Chicago considering lake breeze events and land use

    NASA Astrophysics Data System (ADS)

    Schmeling, M.; Treering, D. J.

    2008-12-01

    Trace elemental, ionic species and reactive trace gases were monitored and measured in Chicago air during the summers of 2002 to 2005. Weather data obtained for the same time periods provided information about major wind patterns. Sampling times and duration were selected to coincide with lake breezes, which occur with highest frequency in summer. Lake breezes were observed between 14 and 47 percent of total collection days per summer and appeared to be more frequent in the cooler summers of 2003 and 2004. Depending on the predominant wind direction on the day before, pollutants increased briefly during a lake breeze event. On days without the occurrence of a lake breeze, it was found that the highest concentrations of pollutants were transported by southerly wind currents. Some major sources, such as brick and cement manufacturing, steel industry and heavy road traffic, lay in the path of this wind current. Chicago area land use and transportation maps were analyzed using a Geographic Information System (GIS) to identify major industrial complexes, intermodal terminals, highways and railroads. We also included demographic information in the GIS maps to analyze whether certain population groups are disproportionally exposed to air pollution. Our results will not only be interesting for the science community, but also to policy makers when considering air pollutant exposure and are expected to inform decisions regarding air pollution policy in the future.

  20. Impact of Bay-Breeze Circulations on Surface Air Quality and Boundary Layer Export

    NASA Technical Reports Server (NTRS)

    Loughner, Christopher P.; Tzortziou, Maria; Follette-Cook, Melanie; Pickering, Kenneth E.; Goldberg, Daniel; Satam, Chinmay; Weinheimer, Andrew; Crawford, James H.; Knapp, David J.; Montzka, Denise D.; Diskin, Glenn S.; Dickerson, Russell R.

    2014-01-01

    Meteorological and air-quality model simulations are analyzed alongside observations to investigate the role of the Chesapeake Bay breeze on surface air quality, pollutant transport, and boundary layer venting. A case study was conducted to understand why a particular day was the only one during an 11-day ship-based field campaign on which surface ozone was not elevated in concentration over the Chesapeake Bay relative to the closest upwind site and why high ozone concentrations were observed aloft by in situ aircraft observations. Results show that southerly winds during the overnight and early-morning hours prevented the advection of air pollutants from the Washington, D.C., and Baltimore, Maryland, metropolitan areas over the surface waters of the bay. A strong and prolonged bay breeze developed during the late morning and early afternoon along the western coastline of the bay. The strength and duration of the bay breeze allowed pollutants to converge, resulting in high concentrations locally near the bay-breeze front within the Baltimore metropolitan area, where they were then lofted to the top of the planetary boundary layer (PBL). Near the top of the PBL, these pollutants were horizontally advected to a region with lower PBL heights, resulting in pollution transport out of the boundary layer and into the free troposphere. This elevated layer of air pollution aloft was transported downwind into New England by early the following morning where it likely mixed down to the surface, affecting air quality as the boundary layer grew.

  1. Sea Breeze Forcing of Estuary Turbulence and Air-Water Exchanges

    NASA Astrophysics Data System (ADS)

    Orton, P. M.; McGillis, W. R.; Zappa, C. J.

    2010-12-01

    The sea breeze is often a dominant meteorological feature at the coastline, but little is known about its estuarine impacts. It arises on sunny days with weak synoptic weather forcing, due to O(100 km) scale atmospheric pressure differences that develop as a result of the different solar absorption properties of sea and land. Here, measurements at an anchored catamaran and meteorological stations along the Hudson River and New York Bay estuarine system are used to illustrate some basic characteristics and impacts of the feature. The sea breeze propagates inland, arriving in phase with peak solar forcing at seaward stations, but several hours later at up-estuary stations. Passage of the sea breeze front raises the water-to-air CO2 flux by 1-2 orders of magnitude, and drives turbulence comparable to spring tide levels in the upper meter of the water column, where most primary productivity occurs in this highly turbid system. Modeling and observational studies often use remotely-measured winds with quadratic parameterizations to compute air-water fluxes (e.g. momentum, CO2), and this leads to a factor of two flux error on sea breeze days during the study. We conclude with a survey of how common these features are in the Hudson as well as other estuaries.

  2. Bay Breeze Influence on Surface Ozone at Edgewood, MD During July 2011

    NASA Technical Reports Server (NTRS)

    Stauffer, Ryan M.; Thompson, Anne M.; Martins, Douglas K.; Clark, Richard D.; Goldberg, Daniel L.; Loughner, Christopher P.; Delgado, Ruben; Dickerson, Russell R.; Stehr, Jeffrey W.; Tzortziou, Maria A.

    2012-01-01

    Surface ozone (O3) was analyzed to investigate the role of the bay breeze on air quality at two locations in Edgewood, Maryland (lat: 39.4deg, lon: -76.3deg) for the month of July 2011. Measurements were taken as part of the first year of NASA's "Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality" (DISCOVER-AQ) Earth Venture campaign and as part of NASA's Geostationary for Coastal and Air Pollution Events Chesapeake Bay Oceanographic campaign with DISCOVER-AQ (Geo-CAPE CBODAQ). Geo-CAPE CBODAQ complements DISCOVER-AQ by providing ship-based observations over the Chesapeake Bay. A major goal of DISCOVER-AQ is determining the relative roles of sources, photochemistry and local meteorology during air quality events in the Mid-Atlantic region of the U.S. Surface characteristics, transport and vertical structures of O3 during bay breezes were identified using in-situ surface, balloon and aircraft data, along with remote sensing equipment. Localized late day peaks in O3 were observed during bay breeze days, maximizing an average of 3 h later compared to days without bay breezes. Of the 10 days of July 2011 that violated the U.S. Environmental Protection Agency (EPA) 8 h O3 standard of 75 parts per billion by volume (ppbv) at Edgewood, eight exhibited evidence of a bay breeze circulation. The results indicate that while bay breezes and the processes associated with them are not necessary to cause exceedances in this area, bay breezes exacerbate poor air quality that sustains into the late evening hours at Edgewood. The vertical and horizontal distributions of O3 from the coastal Edgewood area to the bay also show large gradients that are often determined by boundary layer stability. Thus, developing air quality models that can sufficiently resolve these dynamics and associated chemistry, along with more consistent monitoring of O3 and meteorology on and along the complex coastline of Chesapeake Bay must be a high priority.

  3. Urban-breeze circulation during the CAPITOUL experiment: observational data analysis approach

    NASA Astrophysics Data System (ADS)

    Hidalgo, J.; Pigeon, G.; Masson, V.

    2008-12-01

    An experimental study focused on the urban-breeze circulation observed in Toulouse, South-West of France, during the Intensive Observation Period number 5 (IOP5, 3rd and 4th July 2004) of the CAPITOUL experiment (Feb. 2004 to Feb. 2005) is presented. The influence of the urban breeze circulation on the structure and the dynamics of the Atmospheric Boundary Layer is analysed by using ground stations, wind profilers (UHF radar), radio soundings and aircraft data. The IOP5 is a summertime anticyclonic situation with low wind, strong insulation and a deep boundary layer with a sheared wind profile. The temporal and spatial relationship between the Surface Energy Balance (SEB), the diurnal evolution of the surface temperature and the dynamics of the airflow within the mixed layer are studied for urban and rural sites. The vertical and horizontal structure of the urban heat island are analysed from both surface stations and aircraft data. The nocturnal urban heat island reaches 5 °C. In the early morning, the city air becomes 1 °C cooler than in the countryside (due to efficient heat storage and building shade on the city urban canopy), then warmer again (1 °C) in the afternoon, due to negligible evaporation and strong sensible heat flux in the city. The daytime heat island is also present in altitude, being localized above the city centre at 350 m of height (1 °C) and advected to leeward at 1100 m of height (0.5 °C). This diurnal heat island is associated to an urban-breeze circulation characterized by a surface convergence towards the city at low levels and a divergence in upper boundary layer. The urban breeze grows in intensity from 2 m s-1 (at 12.00 UTC) to 5-6 m s-1 (at 18.00 UTC). Aircraft measurements show that the urban breeze horizontal extension is 2 to 3 times larger than the city size.

  4. Observation on internal waves propagation during Land breeze event in Northern Tyrrhenian coast

    NASA Astrophysics Data System (ADS)

    Martellucci, Riccardo; Pierattini, Alberto; Paladini de Mendoza, Francesco; Melchiorri, Cristiano; Piermattei, Viviana; Ciampa, Francesco; Marcelli, Marco

    2015-04-01

    Internal wave propagation and water column mixing phenomena play an important role in many marine ecosystem coastal process. In Northern Tyrrhenian coast the experimental proposed approach is aimed to identify these type of oscillation in presence of breeze circulation. Along the Tyrrhenian coast summer period climate conditions allow the generations of high frequency land-sea breeze events. This local circulation, land-sea breeze indeed, may generate significant modifications of the sea waters physical parameters. Thay often appear as internal gravity waves especially in presence of stratified water and stable thermocline. Since the whole investigated process evolves on diurnal scale and in the space of a few miles the sampling plan was operated with a series of oceanographic surveys at 40 meters depth with 20 minutes interval one from another between 5 a.m. and 11 a.m. and they were repeted during each summers between 2012 - 2014. Coupled with the acquisition of physical parameters current data were collected with 500 kHz ADCP every 20s, the resolution of vertical profiles of CTD matches the ADCP 1 meter magnitude vertical resolution. in order to investigate the water column layers dynamics behavior, Brunt-Vaisala and Richardson number were computed using the sampled physical parameters. Coastal surveys analysis highlights the presence of temperature oscillation in proximity of the thermocline and bottom layers; these oscillations have been observed during all measure surveys, when the land breeze was over. Indeed the land breeze tends to generate an offshore transport causing bottom layers to lift. At the same time solar radiation heating causes a sink of the surface layers which flatten the layers in proximity of the thermocline. Therefore the oscillations of temperature observed during the oceanographic surveys have to considered as internal waves, as during earlier studies conducted in the Tyrrhenian Sea has been observed.

  5. Photovoltaic at Hollywood and Desert Breeze Recreational Centers

    SciTech Connect

    Ammerman, Shane

    2015-09-24

    Executive Summary Renewable Energy Initiatives for Clark County Parks and Recreation Solar Project DOE grant # DE-EE0003180 In accordance with the goals of the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy for promoting solar energy as clean, carbon-free and cost-effective, the County believed that a recreational center was an ideal place to promote solar energy technologies to the public. This project included the construction of solar electricity generation facilities (40kW) at two Clark County facility sites, Desert Breeze Recreational Center and Hollywood Recreational Center, with educational kiosks and Green Boxes for classroom instruction. The major objectives and goals of this Solar Project include demonstration of state of the art technologies for the generation of electricity from solar technology and the creation of an informative and educational tool in regards to the benefits and process of generating alternative energy. Clark County partnered with Anne Johnson (design architect/consultant), Affiliated Engineers Inc. (AEI), Desert Research Institute (DRI), and Morse Electric. The latest photovoltaic technologies were used in the project to help create the greatest expected energy savings for60443 each recreational center. This coupled with the data created from the monitoring system will help Clark County and NREL further understand the real time outputs from the system. The educational portion created with AEI and DRI incorporates material for all ages with a focus on K - 12. The AEI component is an animated story telling the fundamentals of how sunlight is turned into electricity and DRI‘s creation of Solar Green Boxes brings environmental education into the classroom. In addition to the educational component for the public, the energy that is created through the photovoltaic system also translates into saved money and health benefits for the general public. This project has helped Clark County to further add to its own energy reduction goals created by the energy management agenda (Resolution to Encourage Sustainability) and the County’s Eco-initiative. Each site has installed photovoltaic panels on the existing roof structures that exhibit suitable solar exposure. The generation systems utilize solar energy creating electricity used for the facility’s lighting system and other electrical requirements. Unused electricity is sent to the electric utility grid, often at peak demand times. Educational signage, kiosks and information have been included to inform and expand the public’s understanding of solar energy technology. The Solar Green Boxes were created for further hands on classroom education of solar power. In addition, data is sent by a Long Term PV performance monitoring system, complete with data transmission to NREL (National Renewable Energy Laboratory), located in Golden, CO. This system correlates local solar irradiance and weather with power production. The expected outcomes of this Solar Project are as follows: (1) Successful photovoltaic electricity generation technologies to capture solar energy in a useful form of electrical energy. (2) Reduction of greenhouse gas emissions and environmental degradation resulting from reduced energy demand from traditional electricity sources such as fossil fuel fired and nuclear power plants. (3) Advance the research and development of solar electricity generation. (4) The education of the general public in regards to the benefits of environmentally friendly electricity generation and Clark County’s efforts to encourage sustainable living practices. (5) To provide momentum for the nexus for future solar generation facilities in Clark County facilities and buildings and further the County’s energy reduction goals. (6) To ultimately contribute to the reduction of dependence on foreign oil and other unsustainable sources of energy. This Solar Project addresses several objectives and goals of the U.S. Department of Energy’s Solar Energy Technology Program. The project improves the integration and performance of solar electricity directly through implementation of cutting edge technology. The project further addresses this goal by laying important ground work and infrastructure for integration into the utility grid in future related projects. There will also be added security, reliability, and diversity to the energy system by providing and using reliable, secure, distributed electricity in Clark County facilities as well as sending such electricity back into the utility electric grid. A final major objective met by the Solar Project will be the displacement of energy derived by fossil fuels with clean renewable energy created by photovoltaic panels.

  6. Virtual practicums within an MPH program: a career development case study.

    PubMed

    Goodman, Jeffrey

    2015-01-01

    This article focuses on an innovative "virtual" practicum arrangement and provides insight for public health professionals seeking a meaningful practicum experience. The traditional practicum model where a student physically reports to work at the field site with a near full-time commitment has become increasingly challenging and often limiting in terms of field site choices and experiences available to a student depending on the location of a school and the student's area of interest. This is particularly true with students who are enrolled in a distance learning program. The experience obtained from a practicum is more important than ever before as rapid changes occur in health service delivery models as a result of the Patient Protection and Affordable Care Act. Career development through a practicum can be vitally important to a mid-career student seeking to remain relevant and in demand within a changing job market. To fulfill these needs, while still obtaining the benefits of a practicum, a virtual practicum arrangement could provide a solution. This case study provides practical tips based on the successful experience of a recent MPH graduate. PMID:25331732

  7. Kidney Diseases

    MedlinePlus

    Your kidneys are two bean-shaped organs, each about the size of your fists. They are located near the ... back, just below the rib cage. Inside each kidney about a million tiny structures called nephrons filter ...

  8. Kidney Failure

    MedlinePlus

    Healthy kidneys clean your blood by removing excess fluid, minerals, and wastes. They also make hormones that keep your ... strong and your blood healthy. But if the kidneys are damaged, they don't work properly. Harmful ...

  9. Kidney stones

    MedlinePlus

    ... dissolved in the urine can crystallize, forming a kidney stone (renal calculus). Usually the calculus is the size ... painful. Often, people may not know they have kidney stones until they feel the painful symptoms resulting from ...

  10. Kidney transplant

    MedlinePlus

    ... Side effects from medicines used to prevent transplant rejection Loss of transplanted kidney ... tries to destroy it. In order to avoid rejection, almost all kidney transplant recipients must take medicines ...

  11. Ectopic Kidney

    MedlinePlus

    ... kidneys filter about 3 ounces of blood, removing wastes and extra water. The wastes and extra water make up the 1 to ... until being released through urination. The kidneys remove wastes and extra water from the blood to form ...

  12. Kidney Biopsy

    MedlinePlus

    ... right diagnosis. [ Top ] What should a person do days before a kidney biopsy? Days before the procedure, ... Top ] What can a person expect on the day of the kidney biopsy? A person should arrive ...

  13. A case study of sea breeze blocking regulated by sea surface temperature along the English south coast

    NASA Astrophysics Data System (ADS)

    Sweeney, J. K.; Chagnon, J. M.; Gray, S. L.

    2013-09-01

    The sensitivity of sea breeze structure to sea surface temperature (SST) and coastal orography is investigated in convection-permitting Met Office Unified Model simulations of a case study along the south coast of England. Changes in SST of 1 K are shown to significantly modify the structure of the sea breeze. On the day of the case study the sea breeze was partially blocked by coastal orography, particularly within Lyme Bay. The extent to which the flow is blocked depends strongly on the static stability of the marine boundary layer. In experiments with colder SST, the marine boundary layer is more stable, and the degree of blocking is more pronounced. The implications of prescribing fixed SST from climatology in numerical weather prediction model forecasts of the sea breeze are discussed.

  14. Kidney Dysplasia

    MedlinePlus

    ... Dimes National Kidney Foundation Urology Care Foundation MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... Disease Organizations​​ . (PDF, 345 KB)​​​​​ Alternate Language URL Kidney Dysplasia Page Content On this page: What is ...

  15. The influence of consecutive sea and land breeze days on the accumulation of photochemical oxidants and nitrogen oxide

    NASA Astrophysics Data System (ADS)

    Nakajima, Ko; Takahashi, Hideo

    2015-04-01

    Efforts have been made to improve the air pollution environment, in Japan, since the first photochemical smog was reported in 1970. While nitrogen oxide and non-methane hydrocarbon levels, both of which are precursors of photochemical oxidants (Ox), are tending to decrease, Ox levels are tending to increase. Local wind, such as sea and land breeze circulation, plays important roles in the production and accumulation of Ox. It has been suggested that continuous sea and land breeze circulation serves to accumulate pollutants. However, pollutant concentrations do not necessarily increase compared with the previous day even if similar weather conditions persist, such as sea and land breeze circulation. As such, the factors related to changes in the pollutant concentrations are not well understood. The purpose of this study is to analyze the accumulation and distribution of air pollutants for days in which sea and land breeze days was consecutive for two days. We chose to study sea breeze days in which a southerly wind develops in the southern Kanto plain, north of Tokyo Bay, during July and August for the years 19902012. We used principal component analysis and cluster analysis to classify the variations in pollutant concentrations. We classified sea breeze days into four groups, i.e., Group 1: days when the pollutant concentration decreased around Tokyo Bay and increased inland, Group 2: days when the concentration increased across almost the entire study region, Group 3: days when the concentration decreased inland and in southern Tokyo Bay, and Group 4: days when the concentration increased, particularly around Tokyo Bay. In Group 2, in which the pollutant concentration increased as compared with the previous day, the wind direction had clearly changed from southerly to northerly during the night of the first day and a land breeze penetrated toward the coastal area. In the other groups, wind velocity also became weaker but there was no change from sea-breeze to land-breeze. In Group 1, in which the pollutant concentration decreased around Tokyo Bay, there was a southerly wind after 24 hours Japanese Standard Time (JST) in the coastal area. This suggests that the change from sea-breeze to land-breeze influences the accumulation of pollutants.

  16. An Observational and Numerical Study of the Nocturnal Sea Breeze. Part I: Structure and Circulation.

    NASA Astrophysics Data System (ADS)

    Buckley, Robert L.; Kurzeja, Robert J.

    1997-12-01

    Characteristics of inland-penetrating nocturnal sea breezes at the Savannah River Site (SRS) in South Carolina are discussed. Detailed observations from an area tower network during the Stable Boundary Layer Experiment (STABLE) indicate passage of marine air through SRS on three different nights. Large-scale winds are directed onshore for the first two nights, resulting in similar boundary layer structure and stability on these nights, while synoptic winds on the third night are offshore, leading to stronger convergence and wedging of the marine air under the inland air mass. The Regional Atmospheric Modeling System (RAMS) is used to simulate conditions for the final two nights. General features of the sea breeze are captured by the model, including wind shifts, moisture increases, turbulence structure differences between the two nights, and the formation of Kelvin-Helmholtz billows along the interface of marine and return airflow.

  17. Investigation of sea-breeze convergence in Salento Peninsula (southeastern Italy)

    NASA Astrophysics Data System (ADS)

    Comin, Alcimoni Nelci; Miglietta, Mario Marcello; Rizza, Umberto; Acevedo, Otavio Costa; Degrazia, Gervasio Annes

    2015-06-01

    The frequency, the location and the characteristics of convective rainfall events induced by the convergence of different sea breeze systems on a Mediterranean peninsula (Salento, in southeastern Italy) are analyzed. Such events have been studied considering satellite/radar images and output fields from two Limited Area Models in the summer period of 2011-2013. A total of 20 days have been detected in which the precipitation due to sea-breeze convergence was clearly observed in satellite and radar images. The synoptic conditions associated with these events have been identified considering the averages of some relevant meteorological parameters in the selected days and the anomaly with respect to the climate. The presence of a cold trough in the central Mediterranean basin appears as a fundamental ingredient for the occurrence of sea breeze convergence and associated precipitation. High-resolution simulations with two state-of-art numerical models have revealed that both of them are generally able to simulate a convergence pattern correctly, apart from a couple of cases for each model. The higher rainfall amounts occur with weak synoptic wind, and weak-to-moderate values of Convective Available Potential Energy (CAPE). When the synoptic wind is of moderate intensity, the region of convergence moves toward the Adriatic coast for a prevailing southerly component, and toward the Ionian coast for a prevailing northerly component. On the opposite, the skin sea surface temperature is relatively uniform and the difference between the Ionian and the Adriatic Seas, surrounding the peninsula on the east and west side, is generally smaller than 1 K, having only a marginal effect on the sea breeze patterns. Similarly, the value of CAPE before the occurrence of rainfall has low prognostic value. The results shows that limited area models with a grid spacing of few km appear as appropriate tools for the simulation for such relatively small scale phenomena.

  18. Transient land breeze: Eclipse induced wind flow modifications—Observations over plant canopy

    NASA Astrophysics Data System (ADS)

    Murthy, B. S.; Latha, R.; Sreeja, P.; Dharmaraj, T.

    2012-11-01

    An experiment is conducted over Cassava plant canopy at a coastal station at CTCRI, Thiruvananthapuram (8°29'N, 76°59E) to study the response of meteorological parameters and land-sea breeze circulations to the annular solar eclipse on January 15, 2010. Observations reveal decrease of solar radiation to a minimum of 96 W m-2 during the peak eclipse period. Air temperature drops by 4 °C and relative humidity increases by 20%. Sensible heat flux reduces to zero. Transient land breeze occurs for a few minutes with a time lag of about 1 h possibly due to outflow from the umbra region or temperature gradient over land with the eclipse progressing in the eastward direction. Sea breeze is delayed by about 3 h on the next day of eclipse. Spectral energy density of wind (u, v, w) and temperature attains a minimum value during totality and increases later, attributable to reduction in turbulence due to eclipse-induced stability.

  19. The influence of the Atlantic Warm Pool on the Florida panhandle sea breeze

    USGS Publications Warehouse

    Misra, V.; Moeller, L.; Stefanova, L.; Chan, S.; O'Brien, J. J.; Smith, T.J.; Plant, N.

    2011-01-01

    In this paper we examine the variations of the boreal summer season sea breeze circulation along the Florida panhandle coast from relatively high resolution (10 km) regional climate model integrations. The 23 year climatology (1979-2001) of the multidecadal dynamically downscaled simulations forced by the National Centers for Environmental Prediction-Department of Energy (NCEP-DOE) Reanalysis II at the lateral boundaries verify quite well with the observed climatology. The variations at diurnal and interannual time scales are also well simulated with respect to the observations. We show from composite analyses made from these downscaled simulations that sea breezes in northwestern Florida are associated with changes in the size of the Atlantic Warm Pool (AWP) on interannual time scales. In large AWP years when the North Atlantic Subtropical High becomes weaker and moves further eastward relative to the small AWP years, a large part of the southeast U.S. including Florida comes under the influence of relatively strong anomalous low-level northerly flow and large-scale subsidence consistent with the theory of the Sverdrup balance. This tends to suppress the diurnal convection over the Florida panhandle coast in large AWP years. This study is also an illustration of the benefit of dynamic downscaling in understanding the low-frequency variations of the sea breeze. Copyright 2011 by the American Geophysical Union.

  20. The influence of the Atlantic Warm Pool on the Florida panhandle sea breeze

    USGS Publications Warehouse

    Misra, Vasubandhu; Moeller, Lauren; Stefanova, Lydia; Chan, Steven; O'Brien, James J.; Smith, Thomas J., III; Plant, Nathaniel

    2011-01-01

    In this paper we examine the variations of the boreal summer season sea breeze circulation along the Florida panhandle coast from relatively high resolution (10 km) regional climate model integrations. The 23 year climatology (1979–2001) of the multidecadal dynamically downscaled simulations forced by the National Centers for Environmental Prediction–Department of Energy (NCEP-DOE) Reanalysis II at the lateral boundaries verify quite well with the observed climatology. The variations at diurnal and interannual time scales are also well simulated with respect to the observations. We show from composite analyses made from these downscaled simulations that sea breezes in northwestern Florida are associated with changes in the size of the Atlantic Warm Pool (AWP) on interannual time scales. In large AWP years when the North Atlantic Subtropical High becomes weaker and moves further eastward relative to the small AWP years, a large part of the southeast U.S. including Florida comes under the influence of relatively strong anomalous low-level northerly flow and large-scale subsidence consistent with the theory of the Sverdrup balance. This tends to suppress the diurnal convection over the Florida panhandle coast in large AWP years. This study is also an illustration of the benefit of dynamic downscaling in understanding the low-frequency variations of the sea breeze.

  1. Mesoscale vegetation-breeze circulations and their impact on boundary layer structures at night

    NASA Astrophysics Data System (ADS)

    Ye, Zhuojia; Jia, Xinyuan

    1995-03-01

    The impact of well watered mesoscale wheat over mid—latitude arid areas on mesoscale boundary layer structures (MBLS) and climate has been investigated in the study,using a mesoscale biophysical, meteorological model (BM) developed in the current study. The BM is composed of six modules:mesoscale atmospheric module, soil module, vegetation module, snow-atmosphere interaction module, underlying surface meteorology module and subgrid scale flux parameterization module. The six modules constitute an interacting system by supplying boundary conditions to each other. The investigation indicates that a horizontal pressure gradient associated with mesoscale perturbations in temperature and humidity is created during the day, which results from more water transpired from the vegetation canopy (VC) and evaporated from underlying wet soil. Non-classical mesoscale circulations (called as vegetation-breeze) are forced by the pressure perturbations with wind speeds about 5 m / s, flowing from the VC to the adjacent bare soil in the low boundary layer. Specific attention in the study is given to study the MBLS at night caused by the interactions between these mesoscale vegetation—breezes. The impacts of the VC’s scale and atmospheric background thermal stability (ABTS) on these thermally forced mesoscale vegetation-breezes are also investigated.

  2. Nearshore Coastal Dynamics on a Sea-Breeze Dominated Micro-Tidal Beach (NCSAL)

    NASA Astrophysics Data System (ADS)

    Torres-Freyermuth, A.; Puleo, J. A.; Ruiz de Alegría-Arzaburu, A.; Figlus, J.; Mendoza, T.; Pintado-Patino, J. C.; Pieterse, A.; Chardon-Maldonado, P.; DiCosmo, N. R.; Wellman, N.; Garcia-Nava, H.; Palemón-Arcos, L.; Roberts, T.; López-González, J.; Bravo, M.; Ojeda, E.; Medellín, G.; Appendini, C. M.; Figueroa, B.; González-Leija, M.; Enriquez, C.; Pedrozo-Acuña, A.; Salles, P.

    2014-12-01

    A comprehensive field experiment devoted to the study of coastal processes on a micro-tidal beach was conducted from March 30th to April 12th 2014 in Sisal, Yucatán México. Wave conditions in the study area are controlled by local (i.e., sea-breezes) and meso-scale (i.e., Nortes) meteorological events. Simultaneous measurements of waves, tides, winds, currents, sediment transport, runup, and beach morphology were obtained in this experiment. Very dense nearshore instrumentation arrays allow us the study of the cross-/along- shore variability of surf/swash zone dynamics during different forcing conditions. Strong sea-breeze wind events produced a diurnal cycle with a maximum wind speed of 14 m/s. The persistent sea-breeze system forces small-amplitude (Hs<1 m) short-period (Tp<4 s) NE waves approaching with a high incidence wave angle. These wave conditions drive westward alongshore currents of up to 0.6 m/s in the inner surf zone and hence produce an active sediment transport in the swash zone. On the other hand, the more energetic (Hs>1 m) Norte event, lasting 48 hours, reached the coast on April 8th generating a long-period swell (Tp>10 s) arriving from the NNW. This event induced an eastward net sediment transport across a wide surf zone. However, long-term observations of sand impoundment at a groin located near the study area suggests that the net sediment transport in the northern Yucatan peninsula is controlled by sea-breeze events and hence swash zone dynamics play an important role in the net sediment budget of this region. A comparative study of surf and swash zone dynamics during both sea-breeze and Norte events will be presented. The Institute of Engineering of UNAM, throughout an International Collaborative Project with the University of Delaware, and CONACYT (CB-167692) provided financial support. The first author acknowledges ONR Global for providing financial support throughout the Visiting Scientist Program.

  3. Transformative learning through a research practicum for undergraduate nursing students.

    PubMed

    Kirkpatrick, Helen; Tweedell, Donna; Semogas, Dyanne

    2011-10-01

    In their final year of a Bachelor of Science in Nursing (BScN) program, students are required to take a research practicum related to clinical practice in a new or ongoing research project, supervised by nursing faculty. This course is designed to enhance students' understanding of the research process. The student's potential role as a research collaborator is emphasized. Involvement in an interdisciplinary narrative study with formerly homeless individuals challenged by severe alcohol dependence, in general poor health and living in a harm reduction environment, transformed students' values, assumptions, and beliefs. Not only did students gain confidence in their beginning skills as potential research collaborators, but they also felt that their future practice would be enhanced by new perspectives gained by studying a marginalized and stigmatized group, thus enabling them to appreciate cultural diversity and improve their competence. PMID:21751762

  4. Mechanical strength of extrusion briquettes (BREX) for blast-furnace and ferroalloy production: II. Effect of the method of grinding coke breeze on the strength of extrusion briquettes

    NASA Astrophysics Data System (ADS)

    Bizhanov, A. M.; Kurunov, I. F.; Dashevskii, V. Ya.

    2015-05-01

    The influence of the method of grinding coke breeze on the strength and the behavior of extrusion briquette (BREX) during static loading is studied. It is found that the size, the shape, and the surface relief of coke breeze particles affect the character of BREX fracture. The application of a shearing extruder for preliminary refinement of coke breeze can result in viscoelastic fracture of BREX due to an increase in its impact toughness.

  5. A study of the Merritt Island, Florida sea breeze flow regimes and their effect on surface heat and moisture fluxes

    NASA Technical Reports Server (NTRS)

    Rubes, M. T.; Cooper, H. J.; Smith, E. A.

    1993-01-01

    Data collected during the Convective and Precipitation/Electrification Experiment were analyzed as part of an investigation of the sea breeze in the vicinity of Merritt Island, Florida. Analysis of near-surface divergence fields shows that the classical 24-hour oscillation in divergence over the island due to the direct sea breeze circulation is frequently disrupted and exhibits two distinct modes: the classical sea breeze pattern and deviations from that pattern. A comparison of clear day surface energy fluxes with fluxes on other days indicates that changes in magnitudes were dominated by the presence or absence of clouds. Non-classical sea breeze days tended to lose more available energy in the morning than classical sea breeze days due to earlier development of small cumulus over the island. A composite storm of surface winds, surface energy fluxes, rainfall, and satellite visible data was constructed. A spectral transmittance over the visible wavelengths for the cloud cover resulting from the composite storm was calculated. It is shown that pre-storm transmittances of 0.8 fall to values near 0.1 as the downdraft moves directly over the site. It is also found that under post-composite storm conditions of continuous clear sky days, 3.5 days are required to evaporate back into the atmosphere the latent heat energy lost to the surface by rainfall.

  6. Changes in nearshore waves during the active sea/land breeze period off Vengurla, central west coast of India

    NASA Astrophysics Data System (ADS)

    Amrutha, M. M.; Sanil Kumar, V.; Singh, J.

    2016-02-01

    A unique feature observed in the tropical and subtropical coastal area is the diurnal sea-breeze/land-breeze cycle. We examined the nearshore waves at 5 and 15 m water depth during the active sea/land breeze period (January-April) in the year 2015 based on the data measured using the waverider buoys moored in the eastern Arabian sea off Vengurla, central west coast of India. Temporal variability of diurnal wave response is examined. Numerical model Delft3D is used to study the nearshore wave transformation. The wave height increased due to the sea breeze and reached its peak at ˜ 13:00 UTC at 15 m water depth, whereas the peak significant wave height is at 12:00 UTC at 5 m water depth. Due to the influence of the land/sea breeze system, the range of the peak wave period in 1 day varied up to 8 s. Reduction in the wave height of wind-sea is around 20 % and that of the swell is around 10 % from 15 to 5 m water depth.

  7. Kidney Cancer

    MedlinePlus

    You have two kidneys. They are fist-sized organs on either side of your backbone above your waist. The tubes inside filter and ... blood, taking out waste products and making urine. Kidney cancer forms in the lining of tiny tubes ...

  8. Local diurnal upwelling driven by sea breezes in northern Monterey Bay

    NASA Astrophysics Data System (ADS)

    Woodson, C. B.; Eerkes-Medrano, D. I.; Flores-Morales, A.; Foley, M. M.; Henkel, S. K.; Hessing-Lewis, M.; Jacinto, D.; Needles, L.; Nishizaki, M. T.; O'Leary, J.; Ostrander, C. E.; Pespeni, M.; Schwager, K. B.; Tyburczy, J. A.; Weersing, K. A.; Kirincich, A. R.; Barth, J. A.; McManus, M. A.; Washburn, L.

    2007-11-01

    Sea breezes often have significant impacts on nearshore physical and biological processes. We document the effects of a diurnal sea breeze on the nearshore thermal structure and circulation of northern Monterey Bay, California, using an array of moorings during the summer upwelling season in 2006. Moorings were equipped with thermistors and Acoustic Doppler Current Profilers (ADCPs) to measure temperature and currents along the inner shelf in the bay. Temperature and current data were characteristic of traditional regional scale upwelling conditions along the central California coast during the study period. However, large diurnal fluctuations in temperature (up to 5 C) were observed at all moorings inshore of the 60-m isobath. Examination of tidal, current, temperature, and wind records revealed that the observed temperature fluctuations were the result of local diurnal upwelling, and not a result of nearshore mixing events. Westerly diurnal sea breezes led to offshore Ekman transport of surface waters. Resulting currents in the upper mixed layer were up to 0.10 m s -1 directed offshore during the afternoon upwelling period. Surface water temperatures rapidly decreased in response to offshore advection of surface waters and upwelling of cold, subsurface water, despite occurring in the mid-afternoon during the period of highest solar heat flux. Surface waters then warmed again during the night and early morning as winds relaxed and the upwelling shadow moved back to shore due to an unbalanced onshore pressure gradient. Examination of season-long, moored time series showed that local diurnal upwelling is a common, persistent feature in this location. Local diurnal upwelling may supply nutrients to nearshore kelp beds, and transport larvae to nearshore habitats.

  9. The Use of Per Session Clinical Assessment with Clients in a Mental Health Delivery System: An Investigation into How Clinical Mental Health Counseling Practicum Students and Practicum Instructors Use Routine Client Progress Feedback

    ERIC Educational Resources Information Center

    Yates, Chad Michael

    2012-01-01

    The purpose of this study was to investigate how clinical mental health counseling practicum students and practicum instructors use per session assessment feedback with clients they served at a university counseling center. Per session assessment and feedback has been shown to increase the treatment outcomes that counselors achieve while treating…

  10. The Amazon river breeze and the local boundary layer. I - Observations

    NASA Technical Reports Server (NTRS)

    De Oliveira, Amauri P.; Fitzjarrald, David R.

    1993-01-01

    Observations of the diurnal evolution of the planetary boundary layer over the Amazon rain forest, made at sites close to the confluence of the Solimoes and Negro rivers (approximately at 3 deg S, 60 deg W) near Manaus, Amazonas, Brazil, show the existence of a diurnal rotation of the wind near the surface and the frequent presence of low-level nocturnal wind maxima. These circulations are shown to be plausibly explained as elements of a river and land breeze circulation induced by the thermal contrast between the rivers and the adjacent forest.

  11. Sea-Breeze and Topographic Influences on the Planetary Boundary Layer in the Coastal Upwelling Area of Cabo Frio (Brazil)

    NASA Astrophysics Data System (ADS)

    Ribeiro, F. N. D.; Soares, J.; Oliveira, A. P.

    2016-01-01

    We use a fully coupled oceanic-atmospheric model to investigate the sources and sinks of turbulent kinetic energy in the Cabo Frio coastal area and to determine the role of topography and the sea breeze in planetary boundary-layer (PBL) development. The study area presents similar boundary-layer characteristics than other coastal upwelling areas with complex topography, such as increased stability and low-level jets. The results show that the major effect of upwelling, over the investigated area, is to maintain low temperatures in the lower atmosphere over the coastal zone, sustaining a strong temperature inversion that precludes the vertical PBL development. Therefore, the cooling effect reduces the horizontal thermal contrast between land and water, generating a negative feedback between the intensity of the sea breeze and the intensity of the upwelling. The topography at Cabo Frio prevents this cooling effect from propagating inland, since it limits the penetration of the sea-breeze circulation.

  12. An observational study of the summer Mediterranean Sea breeze front penetration into the complex topography of the Jordan Rift Valley

    NASA Astrophysics Data System (ADS)

    Naor, R.; Potchter, O.; Shafir, H.; Alpert, P.

    2015-09-01

    The Mediterranean summer sea breeze front (SBF) climatic features of penetration into the complex topography of the Jordan Rift Valley (JRV) were investigated. It was shown that the SBF penetration into the JRV occurs in a well-defined chronological order from north to south. One exception to this general rule is the breeze penetration of Sdom, which occurs after it has penetrated the Arava which is located further south, probably due to the micro-climatic effect of the Dead Sea. It was also noted that the breeze increases the local specific humidity as it reaches the JRV in spite of significant temperature increases. The temperature reaches its daily peak 2 to 3 h later in the southern valley compared to the northern valley and is suggested to be due to the later SBF penetration and the valley structure. The pre-SBF line features in the JRV are described.

  13. Evaluation of the Education Practicum Program 1977-1978. Faculty of Education Program Evaluation Report Number 1.

    ERIC Educational Resources Information Center

    Ratsoy, Eugene W.; And Others

    Designed as the first stage of a four-year evaluation of the education practicum program at the University of Alberta, this study had two major purposes. The first was to provide a pool of data to serve as a base line against which to compare new practicum programs. The second was to identify satisfactory and unsatisfactory aspects of the program.…

  14. Developing an Operational Mental Health Center with Service Provisions for the Public School System. Maxi II Practicum.

    ERIC Educational Resources Information Center

    Tatoul, Warren P.

    The purpose of the practicum was to develop an effective relationship between a community mental health center and the public schools. To highlight the potential effectiveness of such a relationship, the practicum involved specific provisions for services to classes of socially maladjusted and/or emotionally disturbed children. The results of the…

  15. Content Analysis of the Practicum Course in the Master of Science in Educational Leadership/Administration Program

    ERIC Educational Resources Information Center

    Norman, Scott W.

    2013-01-01

    In this study, I explored the overall efficacy of the Master of Science in Educational Leadership/ Administration (MSEL/A) program at Florida State University (FSU), by taking a closer look at the introductory course, Practicum in Educational Leadership (the Practicum), as well as the final assessment, the student e-portfolio. The MSEL/A at FSU is…

  16. Evaluating Creative Thinking of Rn-Bsn Students in the Course of Clinical Case Study and Practicum

    ERIC Educational Resources Information Center

    Ku, Ya-Lie

    2015-01-01

    This case study evaluated creative thinking of RN-BSN students in the course of clinical case study and practicum. Study design used quantitative and qualitative evaluations of creative thinking of RN-BSN students by triangulation method in the course of clinical case study and practicum. Sixty RN-BSN students self-perceived the changing levels of…

  17. The Effectiveness of an Embedded Approach to Practicum Experiences in Educational Leadership: Program Candidates' Perspectives

    ERIC Educational Resources Information Center

    Chandler, Mary; Chan, Tak Cheung; Jiang, Binbin

    2013-01-01

    This study examined how effective an embedded practicum experience in an educational leadership program in a Southeastern University is in serving the purpose of preparing educational leaders to meet future challenges. Findings of this study confirm practicum areas that met the educational demands and highlight areas that need improvement to…

  18. Student Perceptions of a Hands-on Practicum to Supplement an Online eHealth Course

    PubMed Central

    2012-01-01

    Background Since 2000, the Centre for Online Health (COH) at The University of Queensland has offered a range of online eHealth courses at the undergraduate and postgraduate level. While online learning has a number of advantages, in some domains, it can present some challenges to the development of practical skills and experience. Objective To assess students’ perceptions of the value of an eHealth practicum. Methods To supplement our online learning program, we introduced an eHealth practicum component that aimed to expose students to a range of clinically relevant learning experiences. Subsequently, by means of a questionnaire, student perceptions of the practicum were assessed. Results Over two semesters, a total of 66 students participated in the eHealth practicum, and questionnaire responses were very positive. The majority of students agreed that the practicum allowed them to gain necessary skills in eHealth applications (59%) and provided them with an opportunity to explore ways of using different eHealth tools for the delivery of health care at a distance (62%). Conclusions The study shows that a practical component in eHealth teaching was well received by students. While online teaching is appropriate for providing knowledge, the opportunity to develop practical skills may encourage students to use eHealth techniques in their future practices. PMID:23246840

  19. Chronic Kidney Diseases

    MedlinePlus

    ... Skiing, Snowboarding, Skating Crushes What's a Booger? Chronic Kidney Diseases KidsHealth > For Kids > Chronic Kidney Diseases Print ... re talking about your kidneys. What Are the Kidneys? Your kidneys are tucked under your lower ribs ...

  20. Kidney (Renal) Failure

    MedlinePlus

    ... News Physician Resources Professions Site Index A-Z Kidney Failure Kidney failure, also known as renal failure, ... evaluated? How is kidney failure treated? What is kidney (renal) failure? The kidneys are designed to maintain ...

  1. Kidney disease - resources

    MedlinePlus

    Resources - kidney disease ... The following organizations are good resources for information on kidney disease: National Kidney Disease Education Program -- www.nkdep.nih.gov National Kidney Foundation -- www.kidney.org National ...

  2. Chronic Kidney Disease (CKD)

    MedlinePlus

    ... kidneys Your kidneys are vital organs that remove waste and extra fluid from your blood. Chronic kidney ... kidneys Your kidneys are vital organs that remove waste and extra fluid from your blood. Tests for ...

  3. Tests for Kidney Health

    MedlinePlus

    ... kidneys Your kidneys are vital organs that remove waste and extra fluid from your blood. Chronic kidney ... kidneys Your kidneys are vital organs that remove waste and extra fluid from your blood. Tests for ...

  4. Theoretical calculations of interactions between urban breezes and mountain slope winds in the presence of basic-state wind

    NASA Astrophysics Data System (ADS)

    Seo, Jaemyeong Mango; Ganbat, Gantuya; Han, Ji-Young; Baik, Jong-Jin

    2015-11-01

    Many big cities around the world are located near mountains. In city-mountain regions, thermally and topographically forced local winds are produced and they affect the transport of pollutants emitted into the urban atmosphere. A better understanding of the dynamics of thermally and topographically forced local winds is necessary to improve the prediction of local winds and to cope with environmental problems. In this study, we theoretically examine the interactions of urban breezes with mountain slope winds in the presence of basic-state wind within the context of the response of a stably stratified atmosphere to prescribed thermal and mechanical forcing. The interactions between urban breezes and mountain slope winds are viewed through the linear superposition of individual analytical solutions for urban thermal forcing, mountain thermal forcing, and mountain mechanical forcing. A setting is considered in which a city is located downwind of a mountain. In the nighttime, in the mountain-side urban area, surface/near-surface horizontal flows induced by mountain cooling and mountain mechanical forcing cooperatively interact with urban breezes, resulting in strengthened winds. In the daytime, in the urban area, surface/near-surface horizontal flows induced by mountain heating are opposed to urban breezes, giving rise to weakened winds. It is shown that the degree of interactions between urban breezes and mountain slope winds is sensitive to mountain height and basic-state wind speed. Particularly, a change in basic-state wind speed affects not only the strength of thermally and mechanically induced flows (internal gravity waves) but also their vertical wavelength and decaying rate. The examination of a case in a setting in which a city is located upwind of a mountain reveals that basic-state wind direction is an important factor that significantly affects the interactions of urban breezes with mountain slope winds.

  5. The Characteristics of the Chicago Lake Breeze and Its Effects on Trace Particle Transport: Results from an Episodic Event Simulation.

    NASA Astrophysics Data System (ADS)

    Harris, Lucas; Rao Kotamarthi, V.

    2005-11-01

    The lake-breeze circulation that forms over Lake Michigan during the summer influences the Chicago, Illinois, metropolitan area’s weather in several ways. Of particular significance is the circulation’s effect on the dispersion of pollutants such as ozone and aerosols produced in and around the city. To investigate these effects, the fifth-generation Pennsylvania State University National Center for Atmospheric Research Mesoscale Model (MM5) was used to perform numerical simulations for two lake-breeze events—one in July 1999 and another in July 2002. The model runs were verified with data from several locations around the Chicago area. The simulated breeze circulation decreased the rate of increase in air temperature while penetrating roughly 12 km inland and lasting about 8 h, in reasonable agreement with observations. Furthermore, the inland penetration distance was related to the strength of the maximum vertical velocity within the front. Calculations of trajectories and transport of particles showed that the breeze tended to transport particles trapped within it to the north when release occurred before the circulation came ashore, whereas particles released at the time of the breeze’s landfall or afterward moved more northeasterly, in the direction of the prevailing wind. Thirty-four percent of all released particles were trapped by the circulation and raised to a height of at least 300 m, and 20% of the particles remained in the lowest 100 m above the surface. In addition, sensitivity tests showed little change in the modeled breeze when measured surface temperatures for Lake Michigan were used as initial conditions and boundary conditions in the place of surface skin temperature (as derived by the National Centers for Environmental Prediction). Raising the lake temperatures significantly in the simulation yielded a more elongated vertical circulation and a briefer lake-breeze event that did not reach as far inland.

  6. Numerical simulation of sea breezes over the Auckland region, New Zealand — Air quality implications

    NASA Astrophysics Data System (ADS)

    McKendry, Ian G.

    1989-10-01

    The air pollution meteorology of a typical sea breeze day is investigated using the Colorado State University Mcsoscale Model. Results are qualitatively compared with observations and reveal a complex wind field characterised by migratory sea breeze convergence zones. Associated with these features, the model predicts enhanced upward vertical velocities and ‘doming’ of the planetary boundary layer (PBL). The diurnal variation in PBL depth is shown to vary markedly at different locations and is dependent on position in relation to the migratory convergence zones. These complex spatial and temporal variations in the wind and PBL depth have important implications for air quality in Auckland and confirm that simple Gaussian or box trajectory approaches are inappropriate for air quality assessment in such environments. The inclusion in the model of variable surface properties, a dynamic synoptic state and improved PBL parameterisations, as well as coupling with a Lagrangian particle model, are recommended if the model is to be used as a tool for further air quality studies in the Auckland area.

  7. Observations and Numerical Simulations of Urban Heat Island and Sea Breeze Circulations over New York City

    NASA Astrophysics Data System (ADS)

    Childs, Peter P.; Raman, Sethu

    2005-10-01

    Observations from two SOund Detection And Ranging (SODAR) units, a 10 m micrometeorological tower and five Automated Surface Observing Stations (ASOS) were examined during several synoptic scale flow regimes over New York City after the World Trade Center disaster on September 11, 2001. An ARPS model numerical simulation was conducted to explore the complex mesoscale boundary layer structure over New York City. The numerical investigation examined the urban heat island, urban roughness effect and sea breeze structure over the New York City region. Estimated roughness lengths varied from 0.7 m with flow from the water to 4 m with flow through Manhattan. A nighttime mixed layer was observed over lower Manhattan, indicating the existence of an urban heat island. The ARPS model simulated a sea-breeze front moving through lower Manhattan during the study period consistent with the observations from the SODARs and the 10-m tower observations. Wind simulations showed a slowing and cyclonic turning of the 10-m air flow as the air moved over New York City from the ocean. Vertical profiles of simulated TKE and wind speeds showed a maximum in TKE over lower Manhattan during nighttime conditions. It appears that this TKE maximum is directly related to the influences of the urban heat island.

  8. An Observational and Numerical Study of the Nocturnal Sea Breeze. Part II: Chemical Transport.

    NASA Astrophysics Data System (ADS)

    Buckley, Robert L.; Kurzeja, Robert J.

    1997-12-01

    Chemical transport at the Savannah River Site (SRS) in South Carolina during nocturnal sea-breeze passage is examined using simulations from a three-dimensional mesoscale dynamic model [(RAMS) Regional Atmospheric Modeling System] and a Lagrangian particle dispersion model (LPDM) and supplemental surface measurements of sulfur hexafluoride (SF6) obtained during a 1988 field campaign. Plume dispersion and regional transport were characterized by nights with onshore and offshore synoptic winds. For onshore winds, the sea breeze lifts, redirects, and broadens an initially narrow plume but maintains its general structure. Regional calculations reveal particle translations exceeding 100 km under these conditions. On the other hand, with offshore synoptic winds, frontal passage leads to stronger lifting, turbulence, and vertical shearing that fragments the plume. In addition, complicated recirculation of pollutants is possible and may increase chemical concentrations in areas near the source. Observed and model plumes were shown to depend strongly on vertical, horizontal, and temporal wind shear, and vertical motion. These features were simulated by the RAMS and LPDM models but are not possible with Gaussian models. Turbulence and topography also had important effects on plume characteristics but were simulated adequately only in the frontal region. Deficiencies in the model simulation were attributed mainly to insufficient vertical resolution and inadequate resolution of surface features.

  9. Kidney Failure

    MedlinePlus

    ... Dialysis or Transplant Paying for Kidney Failure Treatment Contact Us Health Information Center Phone: 1-800-860- ... to share this content freely. October 2, 2013 Contact Us Health Information Center Phone: 1-800-860- ...

  10. Keeping kidneys.

    PubMed

    2012-10-01

    Most countries struggle to meet the demand for transplant kidneys, but a few are reaping the benefits of systems dedicated to increasing the number of organ donations after death. Ben Jones and Mireia Bes report. PMID:23109738

  11. Kidney removal

    MedlinePlus

    ... removed (simple nephrectomy) Removal of one entire kidney, surrounding fat, and the adrenal gland (radical nephrectomy). In ... removed. Your surgeon will also take out the surrounding fat, and sometimes the adrenal gland and some ...

  12. Influence of sea-land breezes on the tempospatial distribution of atmospheric aerosols over coastal region.

    PubMed

    Tsai, Hsieh-Hung; Yuan, Chung-Shin; Hung, Chung-Hsuang; Lin, Chitsan; Lin, Yuan-Chung

    2011-04-01

    The influence of sea-land breezes (SLBs) on the spatial distribution and temporal variation of particulate matter (PM) in the atmosphere was investigated over coastal Taiwan. PM was simultaneously sampled at inland and offshore locations during three intensive sampling periods. The intensive PM sampling protocol was continuously conducted over a 48-hr period. During this time, PM2.5 and PM(2.5-10) (PM with aerodynamic diameters < 2.5 microm and between 2.5 and 10 microm, respectively) were simultaneously measured with dichotomous samplers at four sites (two inland and two offshore sites) and PM10 (PM with aerodynamic diameters < or =10 microm) was measured with beta-ray monitors at these same 4 sites and at 10 sites of the Taiwan Air Quality Monitoring Network. PM sampling on a mobile air quality monitoring boat was further conducted along the coastline to collect offshore PM using a beta-ray monitor and a dichotomous sampler. Data obtained from the inland sites (n=12) and offshore sites (n=2) were applied to plot the PM10 concentration contour using Surfer software. This study also used a three-dimensional meteorological model (Pennsylvania State University/National Center for Atmospheric Research Meteorological Model 5) and the Comprehensive Air Quality Model with Extensions to simulate surface wind fields and spatial distribution of PM10 over the coastal region during the intensive sampling periods. Spatial distribution of PM10 concentration was further used in investigating the influence of SLBs on the transport of PM10 over the coastal region. Field measurement and model simulation results showed that PM10 was transported back and forth across the coastline. In particular, a high PM10 concentration was observed at the inland sites during the day because of sea breezes, whereas a high PM10 concentration was detected offshore at night because of land breezes. This study revealed that the accumulation of PM in the near-ocean region because of SLBs influenced the tempospatial distribution of PM10 over the coastal region. PMID:21516932

  13. SUMMARY OF DRILLING FLUID RESEARCH ACTIVITIES, U.S. ENVIRONMENTAL PROTECTION AGENCY, ENVIRONMENTAL RESEARCH LABORATORY, GULF BREEZE

    EPA Science Inventory

    Drilling-fluid related research at the U.S. EPA Environmental Research Laboratory, Gulf Breeze, is summarized. The program is conducted primarily through contracts, grants, and some inhouse projects designed to assess the potential hazard to the marine environment from fluids dis...

  14. A case study of sea breeze blocking regulated by sea surface temperature along the English south coast

    NASA Astrophysics Data System (ADS)

    Sweeney, J. K.; Chagnon, J. M.; Gray, S. L.

    2014-05-01

    The sensitivity of sea breeze structure to sea surface temperature (SST) and coastal orography is investigated in convection-permitting Met Office Unified Model simulations of a case study along the south coast of England. Changes in SST of 1 K are shown to significantly modify the structure of the sea breeze immediately offshore. On the day of the case study, the sea breeze was partially blocked by coastal orography, particularly within Lyme Bay. The extent to which the flow is blocked depends strongly on the static stability of the marine boundary layer. In experiments with colder SST, the marine boundary layer is more stable, and the degree of blocking is more pronounced. Although a colder SST would also imply a larger land-sea temperature contrast and hence a stronger onshore wind - an effect which alone would discourage blocking - the increased static stability exerts a dominant control over whether blocking takes place. The implications of prescribing fixed SST from climatology in numerical weather prediction model forecasts of the sea breeze are discussed.

  15. Keep Your Kidneys Clear: Kicking Kidney Stones

    MedlinePlus

    ... Your Kidneys Clear Keep Your Kidneys Clear Kicking Kidney Stones Some say that passing a kidney stone is like delivering a baby made of razor ... is that, although they can be excruciatingly painful, kidney stones rarely cause permanent damage, and you may be ...

  16. An analysis of music therapy student practicum behaviors and their relationship to clinical effectiveness: an exploratory investigation.

    PubMed

    Darrow, A A; Johnson, C M; Ghetti, C M; Achey, C A

    2001-01-01

    The purpose of the present study was to investigate specific clinical behaviors exhibited by music therapy students in their 1st through 4th semesters of practicum. A secondary purpose of the study was to determine if a relationship exists between therapy students' behaviors and their assessed clinical success. Participants were instructed to submit 20-minutes of videotape from one practicum session, chosen at random from the current practicum semester. Two trained observers then viewed the videotapes and simultaneously recorded the occurrence and duration of practicum student behaviors using SCRIBE, a data collection computer program. The SCRIBE program was configured to include 5 broad categories of therapist behaviors: musical behaviors (singing, playing, listening), physical behaviors (such as hand-over-hand assistance, cueing, or clapping), verbal behaviors (therapy-related verbal interactions or other), a combination of two of the above, and other nonspecified behaviors. The percentage of time practicum students exhibited behaviors within in each category was calculated for all session segments. These same videotapes were also evaluated by 2 professional board certified music therapists who were unfamiliar with the practicum students. Students were assigned an overall rating for clinical effectiveness. Evaluators were also asked to provide comments related to their ratings. A descriptive analysis of clinical behaviors indicate that students spend nearly 40% of their practicum time engaged in musical behaviors and over 50% of their time engaged in verbal behaviors. No significant differences were found in the behaviors exhibited by students in the various practicum levels; however, behavioral differences were found for individual student therapists. Additionally, no relationship was found between students' behaviors and their clinical effectiveness. An analysis of comments by the evaluators indicates that the quantity of musical behaviors does not affect clinical effectiveness as much as the quality of the musical behaviors. Evaluator comments also indicate that students identified as personable or as having rapport with their clients were also more effective in the practicum setting. PMID:11796080

  17. Recycling of suspended particulates by the interaction of sea-land breeze circulation and complex coastal terrain

    NASA Astrophysics Data System (ADS)

    Choi, H.; Zhang, Y. H.; Takahashi, S.

    2004-09-01

    The dispersion of recycled particulates in the complex coastal terrain surrounding Kangnung city, Korea was investigated using a three-dimensional non-hydrostatic numerical model and lagrangian particle model (or random walk model). The results show that particulates at the surface of the city that float to the top of thermal internal boundary layer (TIBL) are then transported along the eastern slope of the mountains with the sea breeze passage and nearly reach the top of the mountains. Those particulates then disperse eastward at this upper level over the coastal sea and finally spread out over the open sea. Total suspended particulate (TSP) concentration near the surface of Kangnung city is very low. At night, synoptic scale westerly winds intensify due to the combined effect of the synoptic scale wind and land breeze descending the eastern slope of the mountains toward the coast and further seaward. This increase in speed causes development of internal gravity waves and a hydraulic jump up to a height of about 1 km above the surface over the city. Particulate matter near the top of the mountains also descends the eastern slope of the mountains during the day, reaching the central city area and merges near the surface inside the nocturnal surface inversion layer (NSIL) with a maximum ground level concentration of TSP occurring at 0300 LST. Some particulates are dispersed following the propagation area of internal gravity waves and others in the NSIL are transported eastward to the coastal sea surface, aided by the land breeze. The following morning, particulates dispersed over the coastal sea from the previous night, tend to return to the coastal city of Kangnung with the sea breeze, developing a recycling process and combine with emitted surface particulates during the morning. These processes result in much higher TSP concentration. In the late morning, those particulates float to the top of the TIBL by the intrusion of the sea breeze and the ground level TSP concentration in the city subsequently decreases.

  18. The effect of the sea breeze circulation on surface ozone levels at Wallops Island, Virginia

    NASA Technical Reports Server (NTRS)

    Parsons, C. L.; Williams, M. E.

    1979-01-01

    Surface measurements of windspeed, direction, and ozone concentration collected at Wallops Island, Virginia, during the summers of 1977 and 1978 are analyzed to study the effects of the dominant mesoscale sea breeze circulation on the local photochemical oxidant levels. A bimodality in the atmospheric dynamics is linked to systematic variations in ozone concentration. It is concluded that during certain phases of the two circulation modes, increased wind speed reduces the resistance of the earth's surface to the deposition of ozone, and decreased ozone concentration levels result. For other phases, light winds occur, signifying high resistance to deposition and high ozone levels. This modulation by the local dynamics is a major impediment for pollutant studies in coastal environments, especially those centering on transport, because it tends to mask other processes that may be occurring.

  19. Using the WRF model to simulate the playa breeze over Dugway Proving Ground

    NASA Astrophysics Data System (ADS)

    Spade, Daniela Maria

    The aim of this model and observation based study is to investigate the Advanced Research Weather Research and Forecasting Model's (WRF-ARW, although WRF from hereout) ability to simulate the three-dimensional structure of playa breezes and drainage flows occurring in Dugway Proving Ground, Utah using sub-km nesting in addition to improved land use and terrain datasets (as compared to the default datasets provided with WRF), in addition to studying the diurnal cycle and interactions between the playa breeze and drainage flows. A playa breeze is a thermally forced air circulation system that develops near the edge of playas, which have properties distinct from the surrounding land cover, including a higher thermal conductivity, a higher albedo due to the presence of a thin salt crust at the surface, sparse vegetation cover relative to the surrounding land cover, and a higher latent heat flux. The combination of each of these characteristics produces a thermally direct circulation, with low-level flow away from the playa during the day and toward the playa at night, the result of a cooler playa during the day and a warmer playa at night. Five model runs were performed using the Noah land Surface model, each employing a four telescoping nest strategy. Each model run was given a different set of physical parameterizations, with some using GFS model output and others using NAM model output. The object behind utilizing five model runs was to isolate the impacts made by the differing model parameterization schemes used for each simulation. This was accomplished by comparing the model run output to in situ weather observations, provided courtesy of the Mountain Terrain Atmospheric Modeling and Observation Program (MATERHORN), an ongoing Multidisciplinary University Research Initiative (MURI) sponsored by the Office of Naval Research with the University of Notre Dame acting as Project Lead. It was found that each of the five model simulations tended to produce a longer lasting and stronger playa breeze than what was actually observed. Three factors are believed to be responsible for causing this to occur: synoptic scale winds in the upper atmosphere influencing model simulated winds at the surface, light wind conditions throughout the lower and upper atmosphere, which are known to cause issues in numerical model simulations, and finally a light rainfall that occurred shortly before this study's intense observation period, which acted to lower the albedo of the playa surface and thereby resulted in several of the model simulations having an initialized albedo value that did not correspond with what was actually observed. In addition to the MATERHORN collaboration, This study is also a collaboration between the University of Texas at El Paso, the U.S. Army Research Laboratory (ARL), and National Center for Atmospheric Research (NCAR).

  20. Sea breeze regimes in the New York City region - modeling and radar observations

    SciTech Connect

    Michael, P.; Miller, M.; Tongue, J.S.

    1998-04-01

    During spring and summer, the well known sea breeze circulations can strongly influence airport operations, air-quality, energy utilization, marine activities and infrastructure. The geographic configuration of the New York City region presents a special challenge to atmospheric prediction and analysis. The New Jersey and Long Island coasts are at approximate right angles to each other, additionally Long Island is separated from the mainland of Connecticut by Long Island Sound. The various bodies of water in the region (Atlantic Ocean, Long Island Sound, New York Harbor, Jamaica Bay, etc.) have different surface temperatures. In addition the urbanization of the New York areas can modify atmospheric flows. This paper will present results from model simulations, surface observations and remote sensing using the Weather Surveillance Radar - 1988 Doppler (WSR-88D).

  1. Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe

    NASA Astrophysics Data System (ADS)

    Fernández-Camacho, R.; Rodríguez, S.; de La Rosa, J.; Sánchez de La Campa, A. M.; Viana, M.; Alastuey, A.; Querol, X.

    2010-10-01

    Studies on ultrafine particles (diameter < 100nm) and air quality have mostly focused on vehicle exhaust emissions and on new particle formation in "clean" ambient air. Here we present a study focused on the processes contributing to ultrafine particle concentrations in a city (Huelva, SW Spain) placed close to a coastal area where significant anthropogenic emissions of aerosol precursors occur. The overall data analysis shows that two processes predominantly contribute to the number of particles coarser than 2.5 nm: vehicle exhaust emissions and new particle formation due to photo-chemical activity. As typically occurs in urban areas, vehicle exhaust emissions result in high concentrations of black carbon (BC) and particles coarser than 2.5 nm (N) during the morning rush hours. The highest N concentrations were recorded during the 11:00-17:00 h period, under the sea breeze regime, when low BC concentrations were registered and photochemical activity resulted in high O3 levels and in new particle formation in the aerosol precursors' rich inland airflow. In this period, it is estimated that about 80% of the number of particles are linked to sulfur dioxide emissions. The contributions to N of "carbonaceous material and those compounds nucleating/condensing immediately after emission" and of the "new particle formation processes in air masses rich gaseous precursors (e.g. SO2)" were estimated by means of a relatively novel method based on simultaneous measurements of BC and N. A comparison with two recent studies suggests that the daily cycles of "new particle formation" during the inland sea breeze is blowing period seem to be a feature of ultrafine particles in coastal areas of South-west Europe.

  2. Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe

    NASA Astrophysics Data System (ADS)

    Fernández-Camacho, R.; Rodríguez, S.; de La Rosa, J.; Sánchez de La Campa, A. M.; Viana, M.; Alastuey, A.; Querol, X.

    2010-07-01

    Studies on ultrafine particles and air quality have mostly focused on vehicle exhaust emissions and on new particle formation in "clean" ambient air. Here we present a study of the processes contributing to ultrafine particle concentrations in an urban coastal area (Huelva, SW Spain) where significant anthropogenic emissions of aerosol precursors occur. The overall data analysis shows that two processes predominantly contribute to the number of particles coarser than 2.5 nm: vehicle exhaust emissions and new particle formation due to photo-chemical activity. As typically occurs in urban areas, vehicle exhaust emissions result in high concentrations of black carbon (BC) and particles coarser than 2.5 nm (N) during the morning rush hours. The highest N concentrations were recorded during the 11-17 h period, under the sea breeze regime, when photochemical activity resulted in high O3 levels and new particle formation in the aerosol precursors' rich inland airflow. In this period, it is estimated that about 80% of the number of particles are linked to sulfur dioxide emissions. The contributions to N of "carbonaceous material and those compounds nucleating/condensing immediately after emission" and of the "new particle formation processes in air masses rich gaseous precursors (e.g. SO2)" were estimated by means of a relatively novel method based on simultaneous measurements of BC and N. A comparison with two recent studies suggests that the daily cycles of "new particle formation" during the period when the inland sea breeze is blowing period seem to be a feature of ultrafine particles in coastal areas of South-west Europe.

  3. Observed and simulated sea breeze characteristics over Rayong coastal area, Thailand

    NASA Astrophysics Data System (ADS)

    Phan, Tung Thanh; Manomaiphiboon, Kasemsan

    2012-05-01

    This work presents the detailed characterization of sea breeze (SB) over the Rayong coastal area, one of the most rapidly developed and highly industrialized areas during the last decade in Thailand, using observation data analysis and fine-resolution (2 km) mesoscale meteorological modeling with incorporation of new land cover and satellite-derived vegetation fraction data sets. The key characteristics considered include frequency of SB occurrence, sea-breeze day (SBD) identification, degree of inland penetration, and boundary layer development. It was found that SBs occur frequently in the winter due mainly to relatively large land-sea temperature contrasts and minimally in the wet season. Monthly mean SB onset and cessation times are at around 12-15 local time (LT) and 18-21 LT, respectively, and its strength peaks during the early- to mid-afternoon. Monthly SB hodographs generally exhibit clockwise rotations, and SB inland penetration (at PCD-T tower) ranges widely with the monthly means of 25-55 km from the coast. Mesoscale MM5 modeling was performed on two selected SBDs (13 January and 16 March 2006), on which the SBs are under weak and onshore strong influences from background winds, respectively. Simulated near-surface winds and temperature were found to be in fair-to-acceptable agreement with the observations. The SB circulation along the Rayong coast is clearly defined with a return flow aloft and a front on 13 January, while it is enhanced by the onshore background winds on 16 March. Another SB along the Chonburi coast also develops separately, but their fronts merge into one in the mid-afternoon, resulting in large area coverage by the SB. Simulated planetary boundary layer height over the land area is significantly affected by a thermal internal boundary layer (TIBL) induced by an SB, which is found to be low near the coast and increases toward the front (up to 800-1,000 m along the Rayong coast).

  4. Online Learning Management Systems (LMS) and Sense of Community: A Pre-Service Practicum Perspective

    ERIC Educational Resources Information Center

    Rideout, Glenn; Bruinsma, Robert; Hull, John; Modayil, Jacob

    2007-01-01

    This paper examines the impact of the implementation of an online learning management system (LMS) on pre­-service teachers during their major pre-­service practicum. The LMS enabled students to remain connected to peers, professors, and supervisors while new relationships were formed with in­school personnel such as mentor teachers, principals,…

  5. Evaluation of Student-Teachers' Performance in TEFL Practicum at Kuwait University.

    ERIC Educational Resources Information Center

    Al-Mutawa, Najat; Al-Dabbous, Jawahir

    A study investigated the process used in evaluating student teachers of English as a foreign language (TEFL) during the practicum period, in an effort to assess and improve the supervision process. Subjects were 34 student teachers from Kuwait University practice-teaching in intermediate and secondary schools. The students' evaluation was…

  6. Border-Crossing: Cultural Hybridity and the Rural and Small Schools Practicum.

    ERIC Educational Resources Information Center

    Grenfell, Mike

    This paper describes the experiences of non-Indigenous preservice teachers during a 5-week rural cross-cultural practicum in Northern Territory (Australia) Aboriginal schools. The staff at the Education Resource Centre that serves and provides visiting teachers to Yirrkala Homeland Schools expressed a desire to become more fully involved in the…

  7. A Reflection on Bakhtin's "Epic and Novel" in the Context of Early Childhood Student Teachers' Practicum

    ERIC Educational Resources Information Center

    Naughton, Christopher

    2016-01-01

    It is common in early childhood education (ECE), for student teachers to be asked to reflect on incidents or scenarios that occur while on practicum and relate their reflections to "theory." This process of identification and corroboration, demonstrates the student's familiarity with the dominant developmental narratives within which ECE

  8. Creating a Sustainable and Supportive Teaching Practicum in Rural and Regional Locations

    ERIC Educational Resources Information Center

    Ryan, Josephine; Jones, Melitta; Walta, Caroline

    2012-01-01

    The study described in this paper Creating an effective practicum model for rural and regional preservice teachers is designed to address the ongoing difficulties experienced by schools and universities as they seek to provide high quality preservice teacher education for individuals in rural areas. Lecturers from the regional campuses of two…

  9. Facebook and the Final Practicum: The Impact of Online Peer Support in the Assistant Teacher Program

    ERIC Educational Resources Information Center

    Paris, Lisa F.; Boston, Julie; Morris, Julia

    2015-01-01

    Australian pre-service teachers (PST) frequently report feeling isolated and vulnerable during the high stakes Assistant Teacher Program (ATP) final practicum. Mentoring and online learning communities have been shown to offer effective support during periods in which pre-service and beginning teachers feel challenged. As social media…

  10. Learning in the Practicum: Engaging Pre-Service Teachers in Reflective Practice in the Online Space

    ERIC Educational Resources Information Center

    Jones, Mellita; Ryan, Josephine

    2014-01-01

    It is argued that online discussion is a useful tool for creating opportunities for learning in teacher education. In a project designed to improve the practicum in rural areas, researchers placed pre-service teachers (PSTs) in two different moderated online discussion forums: an unstructured personal blog space and a structured threaded…

  11. "L'arte D'arrangiarsi": Evaluation of an Innovative Practice in a Preservice Practicum

    ERIC Educational Resources Information Center

    Macy, Marisa; Squires, Jane

    2009-01-01

    Building on Opportunities for Student Teaching and Learning (BOOST) is a community-based summer preschool program developed, implemented, and coordinated by student teachers, university supervisors, and faculty. Ten preservice graduate students participated in BOOST practicum activities during the spring and summer terms of their 1-year Early…

  12. An Intervention Program for High Risk Undergraduate Students: A Unique Collaborative Practicum Experience.

    ERIC Educational Resources Information Center

    Lemoncelli, John J.; Leonard, Jean

    This report describes the design, implementation, and subjective evaluation of a pilot program, in which graduate practicum students offered short-term counseling to 13 high-risk (academic probation) undergraduate students at Marywood College (Pennsylvania). The counselors-in-training were expected to provide direct counseling services and…

  13. A Multimethod Model for Practicum and Clinical Supervision in Nursing Homes.

    ERIC Educational Resources Information Center

    Duffy, Michael

    1992-01-01

    Notes that nursing homes are an increasingly important setting for gerontological counseling. Portrays multimethod approach to counselor training and supervision in nursing homes. Reviews specific methodology and rationale for clinical supervision in a practicum in counseling older adults associated with counseling psychology doctoral program.…

  14. Get to Work!: Old Dominion's Guaranteed Practicum Gives Students Career Advantage.

    ERIC Educational Resources Information Center

    Martin, Suzanne; Smith, Janis Krebs

    1997-01-01

    Describes the strategy at Old Dominion University for postgraduate job placement through the use of career practicums. Describes how fostering a campus culture of students receiving a practical education helps prepare students for careers. Lists considerations for program implementation and provides some of the positive results the program has…

  15. The Seminar Practicum: A Community Based Instructional System for Paraprofessional Education.

    ERIC Educational Resources Information Center

    Powers, Thomas F.; And Others

    The instructional system which emerged from the Pennsylvania State University three-year project was a seminar practicum for Hotel and Food Service paraprofessional workers which provides work experience, a set of self-instructional modules, subject matter, a weekly seminar discussion, and encourages minority/lower income students. A summary of…

  16. Micro-Counseling: An Experimental Study of Pre-Practicum Training in Communicating Test Results.

    ERIC Educational Resources Information Center

    Miller, C.D.; and others

    Micro-counseling, based on micro-teaching principles, was used in a pre-practicum training program to teach specific objectives related to test interpretation. Based on judges' ratings, the experimental group in micro-counseling received significantly higher ratings than the control group which had conventional class presentations and discussion…

  17. Program for Hearing Impaired Children: Preschool Phase. Maxi II Practicum Report.

    ERIC Educational Resources Information Center

    Drew, Herbert A., Jr.

    Reported are results of a practicum from which a regional program for hard of hearing preschool children was developed and implemented which provided direct classroom services, parent counseling and inservice educational programs for school districts in the southeast region of Massachusetts. Noted is the delivery model of an educational…

  18. Spalding Junior High, Unit 1 Dropout Prevention Program. Maxi 2 Practicum.

    ERIC Educational Resources Information Center

    Wilson, Joe C.

    The purpose of this practicum was to develop strategies to reduce the dropout rate at Spalding Junior High, Unit 1, Griffin, Georgia. Potential dropouts were identified and specific strategies were used to assist students in solving problems which caused them to become potential dropouts. Some of the strategies developed were: (1) faculty…

  19. Program for Hearing Impaired Adolescents: Secondary School Phase. Maxi II Practicum Report.

    ERIC Educational Resources Information Center

    Lynch, Edward J.

    Described in the practicum report is the design, implementation, and evaluation of the first comprehensive high school program for five hearing impaired adolescents in Southeastern Massachusetts. Sections focus on the following topics: the Southeastern region's need for a high school hearing impaired program, the impact of the state invitation to…

  20. Improving Child Management Practices of Parents and Teachers. Maxi I Practicum. Final Report.

    ERIC Educational Resources Information Center

    Adreani, Arnold J.; McCaffrey, Robert

    The practicum design reported in this document was based on one basic assumption, that the adult perceptions of children influence adult behavior toward children which in turn influences the child's behavior. Therefore, behavior changes by children could best be effected by changing the adult perception of, and behavior toward, the child.…

  1. The Development and Evaluation of the Multi-Unit Elementary School. Maxi II Practicum Report.

    ERIC Educational Resources Information Center

    Durham, Joe D.

    The purpose of this practicum was to show the development and evaluation of a multi-unit elementary school (MUS-E) using Individually Guided Education. As an organizational structure capable of permitting planned change. MUS-E provides for the growth of its students on an individual basis, provides in-service for its teachers, involves the public…

  2. Career Awareness: One Means for Meeting the Changing Role of Education. Maxi II [Practicum.

    ERIC Educational Resources Information Center

    Auteri, Rose Mary P.

    This practicum was designed to improve creative problem-solving skills in children through the use of career concepts. Although the full program was developed for youngsters in grade three through six, this project exposed fifth and sixth graders at the Northside School, Levittown, New York to the Career Awareness Program for a period of weeks.…

  3. Improving Student Attitudes in Three Elementary Schools Through a Life Leadership Program. Maxi 1 Practicum.

    ERIC Educational Resources Information Center

    Beesley, Earl G.; And Others

    The purpose of this practicum was to improve elementary student attitudes toward school, teachers, and administrators through implementation of a LIFE Leadership Program. The program was implemented in three Dallas Independent School District (DISD) elementary schools at the fourth-grade, fifth-grade, and sixth-grade levels. The same grade levels…

  4. Lessons Learned from Experiential Learning: What Do Students Learn from a Practicum/Internship?

    ERIC Educational Resources Information Center

    Simons, Lori; Fehr, Lawrence; Blank, Nancy; Connell, Heather; Georganas, Denise; Fernandez, David; Peterson, Verda

    2012-01-01

    A multi-method approach was used in a pilot assessment of student learning outcomes for 38 students enrolled in an undergraduate psychology practicum/internship program. The results from a pretest-posttest survey revealed that students improved their multicultural skills from the beginning to the end of the program. The results also indicate that…

  5. Developing Primary Pre-Service Teachers' Mathematical Content Knowledge during Practicum Teaching

    ERIC Educational Resources Information Center

    Livy, Sharyn L.; Vale, Colleen; Herbert, Sandra

    2016-01-01

    While it is recognised that a teachers' mathematical content knowledge (MCK) is crucial for teaching, less is known about when different categories of MCK develop during teacher education. This paper reports on two primary pre-service teachers, whose MCK was investigated during their practicum experiences in first, second and fourth years of a…

  6. Intercultural Teacher Education: Challenges and Ethical Dilemmas on an International Practicum

    ERIC Educational Resources Information Center

    Chan, Jenny; Parr, Graham

    2012-01-01

    Interest is growing in the potential of international intercultural teaching practicums to connect students to international dimensions of education and to productively disturb the conceptions of teaching, diversity and culture that some pre-service teachers bring with them into their teaching. This paper reports on an international teaching…

  7. Assessment of the Practicum in Teacher Education: Advocating for the Student Teacher and Questioning the Gatekeepers

    ERIC Educational Resources Information Center

    Rorrison, Doreen

    2010-01-01

    This paper reports on research that suggests a new view of assessment of the practicum in teacher education. By transcending the stereotypes of "failing" student teachers who do not achieve traditional benchmarks, this new lens highlights the complexity, diversity and inequality of experiences through listening to the voices of the student…

  8. A Phenomenological Study: The Experience of Live Supervision during a Pre-Practicum Counseling Techniques Course

    ERIC Educational Resources Information Center

    Koltz, Rebecca L.; Feit, Stephen S.

    2012-01-01

    The experiences of live supervision for three, master's level, pre-practicum counseling students were explored using a phenomenological methodology. Using semi-structured interviews, this study resulted in a thick description of the experience of live supervision capturing participants' thoughts, emotions, and behaviors. Data revealed that live…

  9. Maximizing Target Language Use in a Pre-­Service Practicum: Tensions, Power, and Identity Formation

    ERIC Educational Resources Information Center

    Parks, Susan

    2015-01-01

    This study draws from a cultural-historical perspective to explore the experiences of two pre-­service ESL teachers in terms of their efforts to maximize the use of the target language during a school practicum. Both student teachers were fluent in English, had received training in maximizing target language use during their university studies,…

  10. "We Are Left in Limbo!": Chinese EFL Student Teachers' Teaching Practicum Experience

    ERIC Educational Resources Information Center

    Yan, Chunmei; He, Chuanjun

    2015-01-01

    Tensions between vision and reality in the teaching practicum is a significant issue in research and practice globally, but scanty attention has been awarded to research into areas of tension in teaching practice itself. This paper reports on a study that examines a cohort of Chinese English as a Foreign Language (EFL) student teachers'…

  11. Practicum Experiences as Sources of Pre-Service Teachers' Self-Efficacy

    ERIC Educational Resources Information Center

    Martins, Maria; Costa, João; Onofre, Marcos

    2015-01-01

    This study examines physical education pre-service teachers' (PTs) self-efficacy and practicum experiences as self-efficacy sources through a mixed-method approach. For the quantitative phase, a self-efficacy questionnaire was applied to 141 PTs. Results showed a stronger self-efficacy in the relationship with students and discipline promotion.…

  12. When Communities Collide: The Shared Construction and Defence of Community and Identity during a Teaching Practicum

    ERIC Educational Resources Information Center

    Trent, John

    2014-01-01

    This article describes the results of a qualitative multiple case study investigation of the experiences of preservice teachers during a teaching practicum in Hong Kong. The study uses in-depth interviews with pairs of student teachers and their school-based supporting teachers to understand how the former positioned themselves as particular types…

  13. A Reflection on Bakhtin's "Epic and Novel" in the Context of Early Childhood Student Teachers' Practicum

    ERIC Educational Resources Information Center

    Naughton, Christopher

    2016-01-01

    It is common in early childhood education (ECE), for student teachers to be asked to reflect on incidents or scenarios that occur while on practicum and relate their reflections to "theory." This process of identification and corroboration, demonstrates the student's familiarity with the dominant developmental narratives within which ECE…

  14. The Practicum in Preservice Teacher Education: A Review of Empirical Studies

    ERIC Educational Resources Information Center

    Cohen, Esther; Hoz, Ron; Kaplan, Haya

    2013-01-01

    This literature review presents a systematic analysis of 113 empirical studies conducted between 1996 and 2009, portraying a picture of the rationales, goals, activities, roles, and outcomes in the different practicum settings in teacher education programs. The review shows that the rationale, goals, and activities in the different practicum…

  15. Windows into Classrooms: Using ICT to Facilitate Regional, Rural and Remote Practicum and Teacher Professional Learning

    ERIC Educational Resources Information Center

    Romeo, Geoff; Gronn, Donna; McNamara, Sue; Teo, Yiong Hwee

    2012-01-01

    The purpose of this study was to field-test several conferencing technologies in regional schools in Victoria to determine whether the technologies are appropriate for the needs of the university supervisor, trainee teachers and supervising teachers with regard to practicum placements. The study also explored the potential of technology for other…

  16. Web Conferencing of Pre-Service Teachers' Practicum in Remote Schools

    ERIC Educational Resources Information Center

    Gronn, Donna; Romeo, Geoff; McNamara, Sue; Teo, Yiong Hwee

    2013-01-01

    The purpose of this study was to field-test several conferencing technologies in regional schools to determine whether the technologies are appropriate for the needs of the university supervisor, trainee teachers and supervising teachers in practicum placements. The study also explored the potential of technology for other related purposes. Four…

  17. Counseling Skills Pre-Practicum Training at Guidance and Counseling Undergraduate Programs: A Qualitative Investigation

    ERIC Educational Resources Information Center

    Aladag, Mine

    2013-01-01

    This study was aimed to describe counseling skills pre-practicum training at guidance and counseling undergraduate programs in Turkey. A descriptive study was conducted based upon qualitative data. The research group of this study consisted of 11 guidance and counseling undergraduate programs voluntarily participate into study. The Survey Form…

  18. A Content Analysis of Pre-Service School Counselors' Evaluations of an Urban Practicum Experience

    ERIC Educational Resources Information Center

    Holcomb-McCoy, Cheryl; Johnston, Georgina

    2008-01-01

    This article examines the evaluations of nine pre-service school counselors who completed a practicum in an inner-city or urban, predominately African American school. A content analysis of the pre-service counselors' narrative evaluations was studied and six themes emerged: (a) Relationships and Interactions with Urban Students and Educators, (b)…

  19. Applied Research Consultants (ARC): A Vertical Practicum Model of Training Applied Research

    ERIC Educational Resources Information Center

    Nadler, Joel T.; Cundiff, Nicole L.

    2009-01-01

    The demand for highly trained evaluation consultants is increasing. Furthermore, the gap between job seekers' evaluation competencies and job recruiters' expectations suggests a need for providing practical training experiences. A model using a vertical practicum (advanced students assisting in the training of newer students) is suggested as an…

  20. A New View: Reflection and Student Teacher Growth through an E-Practicum Model

    ERIC Educational Resources Information Center

    Holstrom, Lisa; Ruiz, Donna; Weller, Gerry

    2007-01-01

    This article explores innovations in assessment of student teaching practice employed in the University of Cincinnati, USA, online associate's degree in early childhood education, the Early Childhood Learning Community. The program's components are identified with a specific focus on assessment of teaching practicum. The use of a range of…

  1. Exploration of Children's Literature Core-Curriculum Alignment with Preservice Teacher Practicum Experience

    ERIC Educational Resources Information Center

    Clark, Julie A.

    2010-01-01

    This qualitative research, completed through the implementation of a case study, was conducted to explore the benefits of children's literature core-curriculum alignment with preservice teacher practicum experience. The significance of the study was based on four foundation issues: personal reading attitude, addressing the value of using…

  2. Practicum Experiences as Sources of Pre-Service Teachers' Self-Efficacy

    ERIC Educational Resources Information Center

    Martins, Maria; Costa, Joo; Onofre, Marcos

    2015-01-01

    This study examines physical education pre-service teachers' (PTs) self-efficacy and practicum experiences as self-efficacy sources through a mixed-method approach. For the quantitative phase, a self-efficacy questionnaire was applied to 141 PTs. Results showed a stronger self-efficacy in the relationship with students and discipline promotion.

  3. Piloting a Web-Based Practicum Support Tool: Associate Teachers' Perceived Benefits and Drawbacks

    ERIC Educational Resources Information Center

    Petrarca, Diana

    2014-01-01

    This pilot study explored how a small group of associate teachers responded to a web-based learning tool created specifically to support them in mentoring teacher candidates during the practicum component of an initial teacher education program in Southern Ontario, Canada. The learning tool's content drew from the teacher education literature, and…

  4. Bridging Community Generational Gaps through Experiential Learning: A College Nursing Student Practicum for Elderly Patients

    ERIC Educational Resources Information Center

    Pate, Jane D.

    2013-01-01

    At the study site, an elder care practicum was adopted after nursing students demonstrated a lack of interest in the well-being of elderly patients. The purpose of the study was to determine if there was a change in college nursing students' attitudes toward nursing home residents as a result of increased intergenerational exposure following…

  5. Results of a Practicum Offering Teaching-Focused Graduate Student Professional Development

    ERIC Educational Resources Information Center

    Richards-Babb, Michelle; Penn, John H.; Withers, Michelle

    2014-01-01

    Providing chemistry graduate students with opportunities to learn about evidence-based teaching and to practice teaching skills in a mentored environment is crucial to their professional development. Herein is described the model for a graduate-level teaching practicum course specifically focused on the chemistry discipline. This course addressed…

  6. Bridging Community Generational Gaps through Experiential Learning: A College Nursing Student Practicum for Elderly Patients

    ERIC Educational Resources Information Center

    Pate, Jane D.

    2013-01-01

    At the study site, an elder care practicum was adopted after nursing students demonstrated a lack of interest in the well-being of elderly patients. The purpose of the study was to determine if there was a change in college nursing students' attitudes toward nursing home residents as a result of increased intergenerational exposure following

  7. Peer Mentoring: A Way forward for Supporting Preservice EFL Teachers Psychosocially during the Practicum

    ERIC Educational Resources Information Center

    Nguyen, Hoa Thi Mai

    2013-01-01

    During the past several years, the importance of practicum as a vital proportion of the preservice teacher education program has been increasingly emphasized. There have been a number of initiatives for supporting preservice teachers. Among these, peer based relationship is increasingly emerged as an innovative strategy to provide additional…

  8. Using Arts-Based Activities to Foster Transformative Learning during a Teaching Practicum in Kenya

    ERIC Educational Resources Information Center

    Black, Glenda; Bernardes, Rogerio

    2012-01-01

    This essay explores and presents strategies we, as Canadian faculty facilitators of a teaching practicum in Kenya, used to foster the pre-service teachers' knowledge and understanding of critical reflection and transformative learning processes by using arts-based activities. Participation in the arts-based activities while in Kenya encouraged the…

  9. Practicum Experience: Pre-Service Teachers' Self-Perception of Their Professional Growth

    ERIC Educational Resources Information Center

    Choy, Doris; Wong, Angela F. L.; Goh, Kim Chuan; Low, Ee Ling

    2014-01-01

    This paper examined undergraduate pre-service teachers' perceptions of their expectations, fulfilment of these expectations and the relevance of their coursework for classroom practices during three different practicum attachments. These aspects were assessed using questionnaires implemented at the end of each attachment. One-way ANOVA with

  10. Program Coordinators Disposition toward Educational Leadership Best Practices: Practicum Experience in Georgia

    ERIC Educational Resources Information Center

    Tubbs, J. Eric

    2008-01-01

    The importance of field experiences in educational leadership was well documented in literature. However, scholars and practitioners disagreed on how field experiences should be provided to achieve the greatest effect. On the other hand, practicum efficiency and effectiveness were not assessed in the last ten years. Therefore, this study was

  11. Preservice EAL Teaching as Emotional Experiences: Practicum Experience in an Australian Secondary School

    ERIC Educational Resources Information Center

    Nguyen, Minh Hue

    2014-01-01

    Drawing on activity theory, this qualitative case study examines the emotional experiences of Maria, a preservice teacher of English as an additional language (EAL) during the practicum in an Australian secondary school setting and the factors shaping these emotions. Data included interviews with the preservice teacher before and after the…

  12. Illuminating Students' Pre-Practicum Conceptual and Emotional States: Implications for Field Education

    ERIC Educational Resources Information Center

    Katz, Ellen; Tufford, Lea; Bogo, Marion; Regehr, Cheryl

    2014-01-01

    Pre-practicum student reflections were studied using an Objective Standard Clinical Examination adapted for social work. One hundred and nine students conducted simulated interviews and immediately wrote answers to reflective questions. Reflections were studied using descriptive qualitative methodology. Three patterns emerged: students rely…

  13. "My Two Masters": Conflict, Contestation, and Identity Construction within a Teaching Practicum

    ERIC Educational Resources Information Center

    Trent, John

    2010-01-01

    This paper reports the results of a qualitative study into the teaching practice experiences of eight preservice English language teachers in Hong Kong. Using in-depth interviews, the preservice teachers' practicum experiences are explored in terms of their understandings of the requirements of their teacher education institution and their…

  14. Assessment of the Practicum by Students from the Perspective of the Induction Process

    ERIC Educational Resources Information Center

    Pacios, Ana R.

    2013-01-01

    This article shows the assessments made by students from the Carlos III University of Madrid of the induction period in the practicum they performed during their courses of study, and their perceptions of and attitudes towards it. The method used was a survey comprising 6 questions about the induction process, which was carried out among 359…

  15. Steps to Opening Scientific Inquiry: Pre-Service Teachers' Practicum Experiences with a New Support Framework

    ERIC Educational Resources Information Center

    Rees, Carol; Pardo, Richard; Parker, Jennifer

    2013-01-01

    This qualitative multiple-comparative case study investigates (1) The reported experiences and impressions of four pre-service teachers (PTs) on practicum placement in four different classrooms (grades 1-9) where a new Steps to Inquiry (SI) framework was being utilized to support students conducting open inquiry; (2) The relative dispositions of…

  16. Learning and Teaching Positive Guidance Skills: Lessons from Early Childhood Practicum Students

    ERIC Educational Resources Information Center

    McFarland, Laura; Saunders, Rachel; Allen, Sydnye

    2008-01-01

    Empirical studies of early childhood educators' experiences with learning and implementing positive guidance skills are absent from the extant literature. This study explored this topic with 63 junior and senior level university students who were involved in concurrent instructional lecture and practicum experiences. Participants defined "positive…

  17. Career Guidance: An Implementation Model for Small High Schools. A Maxi I Practicum.

    ERIC Educational Resources Information Center

    Stevens, Richard; And Others

    The purpose of this practicum was to design, develop, and implement a career guidance program for small high schools. The program description would act as a model for implementation at other high schools desiring a career guidance program. The method of communicating the program to others was the writing of a "how to" book which others would use…

  18. Exploration of Children's Literature Core-Curriculum Alignment with Preservice Teacher Practicum Experience

    ERIC Educational Resources Information Center

    Clark, Julie A.

    2010-01-01

    This qualitative research, completed through the implementation of a case study, was conducted to explore the benefits of children's literature core-curriculum alignment with preservice teacher practicum experience. The significance of the study was based on four foundation issues: personal reading attitude, addressing the value of using

  19. On-the-Job Training for Novice ESL Writing Tutors: A Practicum Model.

    ERIC Educational Resources Information Center

    Beebout, Linda

    2003-01-01

    Highlights a practicum course designed to train upper-level undergraduates as English-as-a-Second-Language (ESL) writing tutors for their peers. The course offers tutors intensive, basic training in tutoring, TESL, and pedagogical grammar for 2 weeks before they begin tutoring. (Author/VWL)

  20. Messages about Good Teaching: Primary Teacher Trainees' Experiences of the Practicum in Trinidad and Tobago

    ERIC Educational Resources Information Center

    George, June; Worrell, Patricia; Rampersad, Jocelyn

    2002-01-01

    This article reports on a study of the preparation of teacher trainees for field experience, and the conduct of the actual practicum in Trinidad and Tobago. Its purpose was to gain insights into the kinds of messages sent to trainees about teaching, and the ways in which these messages impacted on how and what trainees learned about good teaching.…

  1. Examining Interaction in the Teaching Practicum: Issues of Language, Power and Control

    ERIC Educational Resources Information Center

    Hyland, Fiona; Lo, Margaret M.

    2006-01-01

    This study examines the post-observation interactions between six English as a Second Language (ESL) student teachers and their university tutors during their teaching practicum in Hong Kong. Data consist of interviews with university tutors, transcriptions of recorded conferences and stimulated recall interviews with student teachers. Case…

  2. Alberta's Student Teacher Practicum: A Legal Analysis of the Statutory and Regulatory Framework

    ERIC Educational Resources Information Center

    Donlevy, J. Kent

    2009-01-01

    In 2005, a total of approximately 2, 915 student teachers were placed for practicum purposes in Alberta's schools by the five Alberta universities which offer teacher preparation programs leading to the Bachelor of Education degree: the University of Alberta, the University of Calgary, the University of Lethbridge, King's University College, and

  3. Steps to Opening Scientific Inquiry: Pre-Service Teachers' Practicum Experiences with a New Support Framework

    ERIC Educational Resources Information Center

    Rees, Carol; Pardo, Richard; Parker, Jennifer

    2013-01-01

    This qualitative multiple-comparative case study investigates (1) The reported experiences and impressions of four pre-service teachers (PTs) on practicum placement in four different classrooms (grades 1-9) where a new Steps to Inquiry (SI) framework was being utilized to support students conducting open inquiry; (2) The relative dispositions of

  4. Aboriginal Post-Interns' Views of Their Rural Teaching-Practicum

    ERIC Educational Resources Information Center

    Gerard, Jessi; Lapointe, Joshua; Ralph, Edwin; Walker, Keith

    2013-01-01

    In this article, two indigenous post-interns, who completed their 16-week extended-teaching practicum sessions in rural schools in one Western Canadian province, assess their school-based internship experiences. They summarize their perspectives in three areas: 1) the elements they perceived as positive during the internship, 2) the challenging…

  5. Experiences of Student Speech-Language Pathology Clinicians in the Initial Clinical Practicum: A Phenomenological Study

    ERIC Educational Resources Information Center

    Nelson, Lori A.

    2011-01-01

    Speech-language pathology literature is limited in describing the clinical practicum process from the student perspective. Much of the supervision literature in this field focuses on quantitative research and/or the point of view of the supervisor. Understanding the student experience serves to enhance the quality of clinical supervision. Of…

  6. Pregnancy and Kidney Disease

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  7. Polycystic kidney disease

    MedlinePlus

    Cysts - kidneys; Kidney - polycystic; Autosomal dominant polycystic kidney disease; ADPKD ... Polycystic kidney disease (PKD) is passed down through families (inherited). The 2 inherited forms of PKD are autosomal dominant ...

  8. Kidney-Pancreas Transplant

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  9. About Chronic Kidney Disease

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  10. Chronic Kidney Disease (CKD)

    MedlinePlus

    ... an AKF screening Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... our Northeast Region. Kidney Action Day Kidney Action Day Our late spring event is an elegant fundraiser ...

  11. National Kidney Foundation

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  12. American Kidney Fund

    MedlinePlus

    ... upcoming screening events. Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... support of AKF. Kidney Action Day Kidney Action Day Learn about our signature outreach event. Free health ...

  13. Kidney Stones

    MedlinePlus

    ... when you urinate Your doctor will diagnose a kidney stone with urine, blood, and imaging tests. If you have a stone that won't pass on its own, you may need treatment. It can be done with shock waves; with ...

  14. Your Kidneys

    MedlinePlus

    ... jobs of the kidneys is to filter the waste out of the blood . How does the waste get in your blood? Well, your blood delivers ... to break down the nutrients. Some of the waste is the result of these chemical reactions. Some ...

  15. Kidney pain (image)

    MedlinePlus

    A kidney stone is a solid piece of material that forms in a kidney. Kidney stones may be the size of sand or ... A kidney stone is a solid piece of material that forms in a kidney. Kidney stones may be the ...

  16. Influence of tides on the sea breeze in the German Bight: How much model complexity is needed?

    NASA Astrophysics Data System (ADS)

    Fischereit, Jana; Heinke Schlnzen, K.; Gierisch, Andrea M. U.; Grawe, David; Petrik, Ronny; Hbner, Udo; Backhaus, Jan

    2015-04-01

    The state of the atmosphere near the coast is affected by the interaction of atmosphere and ocean. Thus, in order to predict the state of the atmosphere in coastal areas correctly, different oceanic characteristics and processes need to be considered. The goal of the present study is to identify whether tidal effects are relevant for the prediction of sea breezes at the German North Sea coast. For that an atmosphere model was extended to simulate the ocean in different complexities, leading to a coupled ocean-atmosphere-model. In contrast to many other studies the present study considers a two-way-coupling for momentum. That is, the simulation not only consideres a transfer of momentum from the atmosphere to the ocean but also a transfer from the ocean to the atmosphere. The model system is tested for a sea breeze situation, which is a common phenomenon in the German Bight in May and June. Six different scenarios with a grid size of 1.5 km are calculated: Inundated/dry mudflats for the entire simulation, high/low tide at Heligoland at midday and high/low tide at Heligoland at midday with a two-way-coupling for momentum. Tides influence sea breezes in two ways. Firstly, they influence the heat budget in coastal areas, as mudflats are inundated and fall dry. The study reveals that the air temperature in 10 m height follows the tidal cycle and thus reflects an inundated scenario during high tide and a dry scenario during low tide, respectively. Because of the alternation of the air temperature above the mudflats, the temperature gradient between land and sea areas is influenced, which modifies the sea breeze development. A time difference of one hour is found for the formation of the sea breeze front and its related cloud formation between those scenarios where low tide and high tide occur at midday respectively. Also the inland penetration of sea breezes is influenced by tides: with incoming tide their fronts are moved further inland. Secondly, tidal currents influence the wind speed directly. An effect of tidal currents was found in the results of simulations, which include a two-way coupling for momentum. Depending on the direction of the tidal flow with respect to wind direction, the wind speed over the open North Sea is increased (or decreased) by around 0.2 m/s. Furthermore, an influence of tides on the atmosphere is found not only directly at the coast. Due to non-linear effects with clouds, tides also influence the state of the atmosphere further inland. Considering the findings of the study, it is shown how complex a model system for coastal meteorology might need to be.

  17. Special Education Practicum at The University of Jordan: Preliminary Indicators of Students' Satisfaction and Concerns

    ERIC Educational Resources Information Center

    AL Jabery, Mohammad A.; AL Khamra, Hatem A.

    2013-01-01

    teachers are needed. The Special Education program at the University of Jordan places student teachers for their practicum in different educational settings. The purpose of this study was to report preliminary information about students' satisfaction and concerns…

  18. The Problematic Nature of the Practicum: A Key Determinant of Pre-service Teachers' Emerging Inquiry-Based Science Practices

    NASA Astrophysics Data System (ADS)

    Fazio, Xavier; Melville, Wayne; Bartley, Anthony

    2010-10-01

    This article disseminates findings from a multi-year study regarding secondary preservice science teachers’ perceptions toward inquiry-based science teaching, and the extent these perceptions are augmented by their practicum. While findings indicated that preservice teachers did improve their understanding and capability of using scientific inquiry due to their methods course, the role of practicum in supporting their newly developed perceptions was problematic. Issues ranging from associate teacher subjugation, availability of resources, time constraints, and the need to address curriculum standards were the most commonly cited reasons for preservice teachers’ difficulty in creating an inquiry-based environment during their practicum. Implications are presented highlighting the importance of practicum experiences as a key determinant of pre-service science teachers’ emerging inquiry-based science views and practices.

  19. Dysplastic kidneys.

    PubMed

    Winyard, Paul; Chitty, Lyn S

    2008-06-01

    Dysplastic kidneys are common malformations affecting up to 1 in 1000 of the general population. They are part of the spectrum of Congenital Abnormalities of the Kidney and Urinary Tract (CAKUT) and an increasing number of children are being diagnosed on antenatal ultrasound. In the past, these patients may not have been detected until adulthood following investigation for other illness, or even as incidental findings at post mortem, unless there was severe bilateral dysplasia leading to Potter's sequence or renal failure in childhood. Excluding syndromic cases with defects in other organ systems, features linked to worse prognosis at presentation are: (1) bilateral disease; (2) decreased functional renal mass (which encompasses not just small kidneys but also large ones where cysts replace normal architecture); (3) lower urinary tract obstruction; and (4) anhydramnios or severe oligohydramnios. Dysplasia and renal function are dynamic and can evolve during pregnancy, so repeated assessment is necessary when pathology is expected. Worsening dimensions or decreasing amniotic fluid levels imply poorer prognosis, but there are no proven therapies during pregnancy, though vesicoamniotic shunting may be indicated with obstruction. Postnatal investigations aim to define the anatomy, which helps to estimate risks of infection and kidney function. Management might then involve observation, prophylactic antibiotics, surgery and/or renal support. Risks of renal malignancy and hypertension are low during childhood, but longer-term follow-up is needed, particularly to determine blood pressure and renal function in adulthood and pregnancy. Around 10% of cases have a family history of significant renal/urinary tract malformation. Monogenic causes include mutations in individual genes, such as TCF2/hepatocyte nuclear factor 1ss (HNF1beta), PAX2 and uroplakins, but there are also recent reports of children with compound heterozygote mutations in several renal/urinary tract developmental genes. Effective genetic screening in future may require gene chip or other techniques to assess multiple genes concurrently, but this should not replace a multidisciplinary approach to these often difficult cases. PMID:18065301

  20. Modelling the sea-land breeze patterns by using the WRF-ARW model in South-western Iberian Peninsula

    NASA Astrophysics Data System (ADS)

    Hernández-Ceballos, M. A.; Adame, J. A.; De la Morena, B. A.; Bolívar, J. P.

    2012-04-01

    There are several sites in which the relationship between the atmospheric dynamics and behaviour of pollutants is difficult to understand, generally places with complex orography such as coastal areas or valleys. Inside the set of atmospheric circulations, sea-land breezes are a phenomenon widely studied in many regions around the world due to their interest in atmospheric dynamics and their impact on the local air pollution. Nowadays, to study with sufficient accuracy different aspects related to its structure and dynamics, such as inland penetration of the sea breeze front, the compensating return flow aloft or the features of the thermal internal boundary layer (TIBL) formation, is needed a Weather Prediction System (WPS). There is a lack of these studies in South-western Iberian Peninsula. Due to the orography characteristics, Guadalquivir valley, and emission levels, with industrial, urban or biogenic origin, this region is suitable to present air pollution problems. Therefore, the accurate understanding of the sea-land breeze characteristics will allow a reliable analysis of the air pollution. Thanks to observations, in previous works have been identified two different sea-land breeze patterns in this area, called as pure and non-pure. The aim is to increase the understanding of the meso-meteorological processes, analysing its structure, behaviour and evolution along the Guadalquivir valley, applying the mesoscale meteorological model of high resolution, Weather Research and Forecasting (WRF-ARW). Five meteorological stations, located in both coastal area and inland Guadalquivir valley, have been used to compare simulations and observations (wind speed and direction, potential temperature and specific humidity). The differences between them are in a wide agreement with the results presented in similar works. The model is able to reproduce the wind behaviour along the valley with better results for the non-pure type, while the wind speed are overestimated in both patterns. The potential temperature is underestimated, while the specific humidity presents a slight underestimation at the coast and an overestimation inland. Surface winds simulated show a short spatial development along the Guadalquivir valley for both sea-land breeze patterns, reaching a maximum horizontal extension of approximately 30-40 Km inland. The arrival of Mediterranean flows through transversal valleys over the Guadalquivir valley and the predominance of south westerly flows along the valley during the day limit the horizontal extension of pure and non-pure sea-land breeze. The wind field at different heights and the cross-section of the u and w wind components and specific humidity along the valley axis, reveals the low vertical development of the pure and non-pure sea-breeze pattern, less than 500 m. In addition, the modelling of the mixing height shows the valley division in case of the pure breeze in contrast with the more homogeneity observed for the non pure case. In both patterns, the maximum mixing layer height simulated is close to 1600 m, being also identified the formation of thermal internal boundary layer (TIBL) at the coastal area.

  1. Air pollutant transport in a coastal environment. Part 1: Two-dimensional simulations of sea-breeze and mountain effects

    NASA Technical Reports Server (NTRS)

    Lu, Rong; Turco, Richard P.

    1994-01-01

    Over the southern California coastal region, observations of the vertical distributions of pollutants show that maximum concentrations can occur within temperature inversion layers well above the surface. A mesoscale model is used to study the dynamical phenomena that cause such layers, including sea breezes and mountain flows, and to study the characteristics of air pollutant transport in a coastal environment capped by a temperature inversion. The mathematical and physical structure of the model is described. Two-dimensional simulations corresponding to four configurations of coastal plains and mountains are discussed. The simulations reveal that pollutant transport over a coastal plain is strongly influenced by the topographic configuration, including the height of coastal mountains and their distance from the coastline. Sea breezes induced by land-sea thermal contrasts, as well as upslope winds induced along mountain flanks, both create vertical transport that can lead to the formation of elevated pollution layers. The sea-breeze circulation generates pollution layers by undercutting the mixed layer and lofting pollutants into the stable layer. Heating of mountain slopes acts to vent pollutants above the mountain ridge during the day; during the evening, pollutants can be injected directly into the inversion layer from the decaying upslope flows. In a land-sea configuration with mountains close to the coastline, the sea breeze and heated-mountain flow are strongly coupled. In the afternoon, this interaction can produce upslope flow from which polluted air is detrained into the inversion layer as a return circulation. When the mountains lie farther inland, however, pollutants may be trapped aloft when the mixed layer stabilizes in the late afternoon. As the nocturnal boundary layer forms over the coast in the evening, polluted mixed-layer air is effectively left behind in the inversion layer. In the Los Angeles Basin, the formation mechanism for elevated polluted layers is most similar to our cases with inland mountains.

  2. Impact of Sea breeze event on air quality in tropical city: case of Greater Muscat city, Oman

    NASA Astrophysics Data System (ADS)

    Charabi, Yassine

    2010-05-01

    Muscat is a tropical coastal city. In 2006, the population of the Muscat metropolitan witnessed a three-fold increase between 1970 and 2006 resulting in an enormous functional and spatial transition of land from agriculture to urban land uses. Muscat City had 797000 inhabitants. However, subsequent changes in the land-atmosphere energy balance relationships and air quality must have accompanied this urban transition as the case is in all other urban centers. One of the manifestations of these alterations is the "Urban heat island" in Muscat which is highly magnified by its topography of a narrow plane situated between mountain and sea. This configuration makes Muscat city a perfect trap for air pollutants advected by sea breeze from intense road traffic and their dispersion is blocked by steep mountain slopes. In Muscat city urban road system capacity is undergoing expansion, the pace of development of public transport facilities are not keeping up with improvements in car traffic facilities, and car use is in constant rising. A strategic project was developed in 2007 to observe, measure, model, and analyze the impact of this rapid growth of Muscat on the region's climate and air quality. Numerical simulations compared with field measurements are used to explain the effect of sea breezes on air quality in greater Muscat during summer and winter seasons. The sea breeze circulation is seen to develop early with larger strength and inland propagation in the summer case under the influence of moderate synoptic wind and strong heating conditions than in the NE monsoon and winter cases. The horizontal and vertical extents of thermal internal boundary layer are found to be larger in the summer case than in other cases. The analysis shows that air quality in greater Muscat is much more deteriorated in winter season than the summer cases. An analysis based on pollution amounts and sea breeze ventilation is carried out to divide Muscat into areas, each of which corresponds to a specific pollutant behavior.

  3. Impact of sea breeze air masses laden with ozone on inland surface ozone concentrations: A case study of the northern coast of Taiwan

    NASA Astrophysics Data System (ADS)

    Lin, Ching-Ho; Lai, Chin-Hsing; Wu, Yee-Lin; Lin, Po-Hsiung; Lai, Hsin-Chih

    2007-07-01

    This work examines how ozone-laden sea breeze air masses contribute to inland surface ozone concentrations. The vertical distributions of ozone in sea breeze air masses and the characteristics of sea breezes are investigated using tethered ozonesondes and meteorological radiosondes, respectively, at a measurement site near the northern coast of Taiwan during 24-30 August 2003. The investigations reveal that, initially, sea breeze air masses are stable with relatively high concentrations of ozone distributed in the upper portions of the air masses. Elevated ozone layers with concentrations of 60-100 ppb were frequently observed at 500-1600 m. The growth of a thermal internal boundary layer (TIBL) inland that can bring ozone-rich air aloft in a sea breeze air mass into the growing TIBL subsequently increases the surface ozone concentrations farther inland. Accordingly, the surface ozone concentrations increase with distance inland, regardless of the photochemical production of ozone inland. A new conceptual model was presented to depict this pollution feature. According to a simple Lagrangian analysis, ozone-rich sea breeze air masses under the observed conditions generated a difference of as much as a 30 ppb between the surface ozone concentration at a near-coast location and that at a far inland location. TIBL development at a near-coast area can protect the area from fumigation of elevated ozone layers because the depth of the TIBL is limited there, such that the ozone in the elevated ozone layers cannot be brought to the ground.

  4. Atypical occlusion process caused by the merger of a sea-breeze front and gust front

    NASA Astrophysics Data System (ADS)

    Abulikemu, Abuduwaili; Xu, Xin; Wang, Yuan; Ding, Jinfeng; Wang, Yan

    2015-10-01

    An atypical occlusion process that occurred in North China on 14 July 2011 is studied based on both observations and a real-data Weather Research and Forecasting (WRF) model simulation. The results show that this atypical occlusion process was significantly different from the traditional, synoptic-scale occlusion process that occurs within extratropical cyclones. It was caused by the merger of two cold-type mesoscale fronts. One of the fronts developed from the gust front of convective storms, while the other was a sea-breeze front. As the two fronts moved towards each other, the warm air between them was squeezed and separated from the surface. An atypical occluded front was formed when the two fronts merged, with the warm air forced aloft. This kind of occlusion is termed a "merger" process, different from the well-known "catch-up" and "wrap-up" processes. Moreover, local convection was found to be enhanced during the merger process, with severe convective weather produced in the merger area.

  5. Numerical Simulation of the Transport of Chemically Reactive Species under Land- and Sea-Breeze Circulations.

    NASA Astrophysics Data System (ADS)

    Kitada, Toshihiro; Carmichael, Gregory R.; Peters, Leonard K.

    1984-08-01

    The characteristics of the transport of chemically reactive species under land- and sea-breeze (LSB) circulations are investigated using a detailed transport/chemistry model, which includes 84 gas-phase and 10 heterogeneous chemical reactions. Model applications are presented which use flow fields derived from a modified version of the Asai and Mitsumoto model and eddy diffusivity profiles predicted by the boundary-layer model of Yamada and Mellor as inputs. The effects of nonprecipitating clouds associated with the LSB circulation on the calculated concentration fields are also studied.Mass transports by updrafts and counterflows associated with the LSB circulation and diurnally varying eddy diffusion processes show transitions between double and single maxima within a 24-hour cycle. The vertical profiles of some secondary pollutants such as O3 generally agree with field observations. Clouds are also shown to affect the predicted distributions of both the soluble and less soluble species by reducing the below-cloud photon flux, by removing soluble species from the air at cloud level, and/or by in-cloud production processes. Deposition processes reduce the species concentrations near the surface, and these effects propagate upward through mass transport processes. However, the qualitative characteristic vertical concentration profiles are similar to the cases where deposition is not included. Finally, the results demonstrate the effectiveness of the divergence correction method used in the numerical calculations in eliminating the fictitious production and consumption reactions introduced by nonzero divergence wind fields.

  6. An evidence based approach to undergraduate physical assessment practicum course development.

    PubMed

    Anderson, Brenda; Nix, Elizabeth; Norman, Bilinda; McPike, H Dawn

    2014-05-01

    Physical assessment is an important component of professional nursing practice. New nurse graduates experience difficulty transitioning the traditional head to toe physical assessment into real world nursing practice. This study was conducted to provide current data concerning physical assessment competencies utilized consistently by registered nurses. This quantitative study used a 126 item survey mailed to 900 Registered Nurses. Participants used a Likert-type scale to report frequency of use for physical assessment competencies. Thirty seven competencies were determined to be essential components of the physical assessment, 18 were determined supplemental, and 71 were determined to be non-essential. Transition of the new graduate nurse into professional practice can be enhanced by focusing content in physical assessment practicum courses on the essential competencies of physical assessment. Faculty for the university has analyzed data from this study to support evidence based changes to the undergraduate nursing program physical assessment practicum course. PMID:24083881

  7. Facilitating a self-care practicum experience in consumer health education.

    PubMed

    Ozias, J M; Peterson, F L

    1984-11-01

    There has been an increasing public interest in health care issues such as wellness, self-care, and the importance of taking personal responsibility for one's health. In addition to learning preventive health lifestyle measures, this growing consumer interest involves decisions regarding the purchase and use of health products and health services. There is a significant need for effective consumer health education in the schools that focuses not only on transmission of information, but on the development of decision-making skills and on opportunities for practical application. This paper describes an approach to facilitate the development of a self-care practicum experience in consumer health instruction, making use of the resources and expertise of both the school health educator and the school nurse. The approach describes how a planned practicum can move consumer instruction from an information-receiving experience to a participatory experience that facilitates the development of consumer decision-making skills. PMID:6569275

  8. Impact of fair-weather cumulus clouds and the Chesapeake Bay breeze on pollutant transport and transformation

    NASA Astrophysics Data System (ADS)

    Loughner, Christopher P.; Allen, Dale J.; Pickering, Kenneth E.; Zhang, Da-Lin; Shou, Yi-Xuan; Dickerson, Russell R.

    2011-08-01

    Two fine-scale meteorological processes, fair-weather cumulus cloud development and a bay breeze, are examined along with their impacts on air chemistry. The impact of model resolution on fair-weather cumulus cloud development, transport of pollutants through clouds, sulfur dioxide to sulfate conversion in clouds, and the development of the Chesapeake Bay breeze are examined via 13.5, 4.5, 1.5, and 0.5 km resolution simulations covering the Washington - Baltimore area. Results show that as the resolution increases, more pollutants are transported aloft through fair-weather cumulus clouds causing an increase in the rate of oxidation of sulfur dioxide to sulfate aerosols. The high resolution model runs more nearly match observations of a local pollutant maximum near the top of the boundary layer and produce an increase in boundary layer venting with subsequent pollutant export. The sensitivity of sulfur dioxide to sulfate conversion rates to cloud processing is examined by comparing sulfur dioxide and sulfate concentrations from simulations that use two different methods to diagnose clouds. For this particular event, a diagnostic method produces the most clouds and the most realistic cloud cover, has the highest oxidation rates, and generates sulfur dioxide and sulfate concentrations that agree best with observations. The differences between the simulations show the importance of accurately simulating clouds in sulfate simulations. The fidelity of the model's representation of the bay breeze is examined as a function of resolution. As the model resolution increases, a larger temperature gradient develops along the shoreline of the Chesapeake Bay causing the bay breeze to form sooner, push farther inland, and loft more pollutants upward. This stronger bay breeze results in low-level convergence, a buildup of near surface ozone over land and a decrease in the land-to-sea flux of ozone and ozone precursors as seen in measurements. The resulting 8 h maximum ozone concentration over the Bay is 10 ppbv lower in the 0.5 km simulation than in the 13.5 km simulation.

  9. Nursing Practicum in Gynaecology and Obstetrics – Early Influence Possibilities for a Specialty

    PubMed Central

    Kasch, R.; Baum, P.; Dokter, M.; Zygmunt, M.; Wirkner, J.; Lange, A.; Fröhlich, S.; Merk, H.; Kasch, J.

    2015-01-01

    Background: The shortage of skilled personnel is ubiquitous, basic and further training is a key aspect in the recruitment of new medical colleagues. The significance of the nursing practicum in its function as gateway to the gynaecology and obstetrics discipline is practically unexplored. Methods: In an online questionnaire, medical students in all German faculties were questioned about the practica in their courses. The questionnaire reached 9079 medical students. 149 participants in nursing practica were selectively asked to answer 140 questions. We analysed those students who could, on the basis of their experiences in nursing practica, imagine undertaking an internship (clinical elective) in gynaecology (internship yes “Iy”) separately from those who could not or were still undecided (internship no “In” or, respectively, internship perhaps “Ip”). Results: Altogether 149 medical students who participated in a nursing practicum in the gynaecology discipline were selected, of these 94.9 % were female. 92 (61.7 %) of the students replied that, after their gynaecological nursing practicum, they wanted to undertake an internship in gynaecology (Iy); 39 (26.2 %) answered negatively (In) and 18 (12.1 %) were still undecided (Ip). With regard to the parameters gender, age and duration of study, there were no significant differences among the 3 groups (χ2 0.83). Besides the didactic and professional quality of the training, Iy also mentioned having had a higher practical orientation. They attained their aims more frequently, were better integrated in the health-care team and acquired more practical competences. Satisfaction with the practicum was evaluated as highest among the Iy. Discussion: Those students who could imagine taking an internship in gynaecology were seen to be more satisfied with their practica than those participants who declined or were undecided. The high proportion of females is an early indicator for a feminisation of the specialty. If necessary this could be countered with the help of nursing management. PMID:26726269

  10. Steps to Opening Scientific Inquiry: Pre-Service Teachers' Practicum Experiences with a New Support Framework

    NASA Astrophysics Data System (ADS)

    Rees, Carol; Pardo, Richard; Parker, Jennifer

    2013-04-01

    This qualitative multiple-comparative case study investigates (1) The reported experiences and impressions of four pre-service teachers (PTs) on practicum placement in four different classrooms (grades 1-9) where a new Steps to Inquiry (SI) framework was being utilized to support students conducting open inquiry; (2) The relative dispositions of the PTs toward conducting open inquiry, as indicated by their core conceptions regarding science, the purpose of education, effective teaching, and the capacity of students. Findings indicate that (1) although there were differences in the experiences of the four PTs, all four had an opportunity to observe and/or facilitate students conducting open inquiry with the SI framework, and after the practicum, all of them reported that they would like to include open inquiry in their own classrooms in the future; (2) one PT already possessed core conceptions indicative of a favorable disposition toward open inquiry before the placement; another altered her core conceptions substantially toward a favorable disposition during the placement; a third altered her conceptions regarding the capacity of students; and one PT maintained core conceptions indicative of a disposition that was not favorable to open inquiry despite the pronouncements that she would like to conduct open inquiry with students in their own future classroom. Possible reasons for the differences in the responses of the four pre-services teachers to the practicum placement are discussed.

  11. Usability of Academic Electronic Medical Record Application for Nursing Students' Clinical Practicum

    PubMed Central

    Lee, Hyeong Suk; Park, Joon Ho

    2015-01-01

    Objectives Nursing curricula for undergraduate nursing students need to reflect the information technology used in current nursing practice. A smart-device Academic Electronic Medical Record (AEMR) application can help nursing students access and document records for the clinical practicum. We conducted a pilot study to evaluate the usability of an AEMR application before applying it to the clinical nursing practicum. Methods A previously developed EMR application was modified as an AEMR to access patient information at bedside and to practice documentation. We added several features to the current EMR application to create an AEMR environment. We created a series of document forms and several useful scales on an external application, which included nursing admission notes, vital signs, and intake/output. The case scenarios and tasks were created by a research team to evaluate aspects of AEMRs, including their usability and functionality. Five nursing students completed 15 tasks using a think-aloud method with a tablet device. Results Minor usability issues were identified and rectified. All participants indicated that they became familiar with the application with little effort. They said that the application icons were intuitive, which helped them find patient information more quickly and accurately. Conclusions The application will improve timely access to patient data and documentation for nursing students. We are confident that this AEMR application will enhance nursing students' experience with their clinical practicum, and help them to better understand patient conditions and document them with ideal accessibility. PMID:26279956

  12. Kidney cell electrophoresis

    NASA Technical Reports Server (NTRS)

    Todd, P.

    1979-01-01

    A kidney cell electrophoresis technique is described in four parts: (1) the development and testing of electrophoresis solutions; (2) optimization of freezing and thawing; (3) procedures for evaluation of separated kidney cells; and (4) electrophoretic mobility characteristics of kidney cells.

  13. Kidney cell electrophoresis

    NASA Technical Reports Server (NTRS)

    Todd, P.

    1980-01-01

    The following aspects of kidney cell electrophoresis are discussed: (1) the development and testing of electrophoresis solutions; (2) optimization of freezing and thawing; (3) procedures for evaluation of separated kidney cells; and (4) electrophoretic mobility characterization of kidney cells.

  14. Chronic Kidney Disease

    MedlinePlus

    You have two kidneys, each about the size of your fist. Their main job is to filter wastes and excess water out of ... help control blood pressure, and make hormones. Chronic kidney disease (CKD) means that your kidneys are damaged ...

  15. Diabetic Kidney Problems

    MedlinePlus

    ... too high. Over time, this can damage your kidneys. Your kidneys clean your blood. If they are damaged, waste ... in your blood instead of leaving your body. Kidney damage from diabetes is called diabetic nephropathy. It ...

  16. Extraintestinal Complications: Kidney Disorders

    MedlinePlus

    ... but some less serious ones occur more frequently. Kidney stones These are probably the most commonly encountered kidney complications of IBD—particularly oxalate stones. Kidney stones are more common in Crohn's patients with disease ...

  17. Chronic Kidney Disease

    MedlinePlus

    ... well as they should. Normal, healthy kidneys remove waste from the blood. The waste then leaves your body in your urine. The ... have chronic kidney disease, your kidneys cannot remove waste from the blood as well as they should. ...

  18. Injury - kidney and ureter

    MedlinePlus

    ... injury Removing the entire kidney ( nephrectomy ), draining the space around the kidney, or stopping the bleeding via ... BA. Acute kidney injury. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine . 24th ed. Philadelphia, PA: ...

  19. Kidney Disease Basics

    MedlinePlus

    ... statement, and the Director's Update newsletter Offices & Divisions Organizational structure ... kidney disease . When someone has a sudden change in kidney function—because of illness, or injury, ...

  20. I. Fundamental Practicum: Temperature Measurements of Falling Droplets, July, 1989. II. Industrial Practicum: Interaction and Effect of Adsorbed Organics on Reference Clays and Reservoir Rock, April, 1988. III. Apprenticeship Practicum: Studies of Group XIII Metal Inclusion Complexes, March, 1987

    NASA Astrophysics Data System (ADS)

    Wells, Mark Richard

    The temperature of 225 μm decane droplets falling through a hot, quiescent, oxygen -free environment were measured using laser-induced exciplex fluorescence thermometry. The temperature of the droplets was found to increase approximately 0.42^ circC/^circC increase in the environment temperature as the environment temperature was increased to 250^circ C. Less than 10% evaporation of the droplets was observed at the highest environment temperatures. This represents one of the first successful applications of a remote-sensing technique for the temperature determination of droplets in a dynamic system. Industrial practicum. The industrial practicum report, entitled "Interaction and Effect of Adsorbed Organics on Reference Clays and Reservoir Rock," is a discussion of the measurement of the effect adsorbed organic material, especially from crude petroleum, has on the surface area, cation exchange capacity, and zeta potential of reference clay material and reservoir rock. In addition, the energetics of adsorption of a petroleum extract onto several reference clays and reservoir rock were measured using both flow and batch microcalorimetry. These results are very important in evaluating and understanding the wettability of reservoir rock and its impact on the recovery of crude oil from a petroleum reservoir. Apprenticeship practicum. "Studies of Group XIII Metal Inclusion Complexes" investigates the structure and dynamics of liquid inclusion complexes having the general formula (R_4N) (Al_2 Me_6I) cdot (C_6H_6) _{rm x}. ^1H and ^{13}C spin-lattice relaxation times, nuclear Overhauser enhancements, and molecular correlation times were measured as well as diffusion coefficients of the various species in solution. The dynamics of transfer between "guest" and free solvent molecules were measured using a variety of techniques. The inherent structure of liquid inclusion complexes as an ordered medium for homogeneous catalysis was studied using hydrogenation catalyzed by soluble Rh (I) complexes. The interaction of air-stable salts based on In (III) halides with aromatic solvents were studied and assessed as media for other homogeneous catalytic reactions.

  1. The Epistemography of an Urban and Regional Planning Practicum: Appropriation in the Face of Resistance. WCER Working Paper No. 2010-8

    ERIC Educational Resources Information Center

    Bagley, Elizabeth

    2010-01-01

    In this paper, the author describes an ethnographic study of a graduate-level practicum at a large Midwestern university in order to examine one of the ways urban planners develop expertise. The graduate students in the practicum were guided in the production of a site plan for a developing area by a planner with 34 years of planning experience.…

  2. [Formula: see text]Official Position of the American Academy of Clinical Neuropsychology (AACN): Guidelines for Practicum Training in Clinical Neuropsychology.

    PubMed

    Nelson, Aaron P; Roper, Brad L; Slomine, Beth S; Morrison, Chris; Greher, Michael R; Janusz, Jennifer; Larson, Jennifer C; Meadows, Mary-Ellen; Ready, Rebecca E; Rivera Mindt, Monica; Whiteside, Doug M; Willment, Kim; Wodushek, Thomas R

    2015-10-01

    Practical experience is central to the education and training of neuropsychologists, beginning in graduate school and extending through postdoctoral fellowship. However, historically, little attention has been given to the structure and requirements of practicum training in clinical neuropsychology. A working group of senior-level neuropsychologists, as well as a current postdoctoral fellow, all from a diverse range of settings (The AACN Practicum Guidelines Workgroup), was formed to propose guidelines for practicum training in clinical neuropsychology. The Workgroup reviewed relevant literature and sought input from professional organizations involved in education and training in neuropsychology. The proposed guidelines provide a definition of practicum training in clinical neuropsychology, detail entry and exit criteria across competencies relevant to practicum training in clinical neuropsychology, and discuss the relationship between doctoral training programs and practicum training sites. The proposed guidelines also provide a methodology for competency-based evaluation of clinical neuropsychology practicum trainees and outline characteristics and features that are integral to an effective training environment. Although the guidelines discussed below may not be implemented in their entirety across all clinical neuropsychology practicum training sites, they are consistent with the latest developments in competency-based education. PMID:26753742

  3. Kidney Disease: A Silent Problem

    MedlinePlus

    ... Kidney Disease: A Silent Problem Heath and Aging Kidney Disease: A Silent Problem Kidney Disease Who Is ... hormones that your body needs to stay healthy. Kidney Disease Kidney disease can sometimes develop very quickly, ...

  4. Sodar and Lidar Observations and Modelling of the Pollutants Dynamics in a Strongly Industrialized Coastal Area during a Sea-Breeze Event

    NASA Astrophysics Data System (ADS)

    Talbot, C.; Leroy, C.; Augustin, P.; Willart, V.; Delbarre, H.; Khomenko, G.

    2007-05-01

    The understanding of the atmospheric dynamics under sea breeze is crucial for predicting pollution transport and dispersion in coastal areas. We present here a study of the boundary-layer dynamics and the redistribution of the industrial SO2 emissions in the Dunkerque region (51 N, 2.20 E), in the north of France, at the eastern limit of the English Channel. The French Flanders coastal area is strongly industrialized with many refineries and metallurgic factories. This region is a flat area with small hills (up to 200 meters high) located 30 km away from the coast where sea breezes develop frequently all along the year. Thus, the pollutants transport and pollution episodes are mainly governed by the sea-breeze phenomenon under sunny days. By using optical and acoustic remote-sensing instruments (lidar and sodar), the vertical structure of the atmospheric boundary layer has been observed during a whole sea-breeze event in September 2003. The structure and dynamics of the atmosphere and the pollutants transport within has been simulated with a 3D non hydrostatic model Meso-NHC, developed by the C.R.N.M. and Laboratoire d Aerologie, and was compared with the remote-sensing observations. We present the results of our numerical simulations as well as the data of the remote sensing instruments and stations of the air quality network. The thermal internal boundary layer, the gravity current, the atmospheric boundary layer, the nocturnal boundary layer and the residual layer, were observed by the remote sensing instruments and computed by the model. High values of SO2 concentration were observed at the sea-breeze front passage, and the pollutants emitted were uplifted by updrafts in the front. The acceleration of the sea-breeze flow seems to be responsible of the vertical redistribution of the pollutants emitted inside the sea-breeze system by means of vertical ascents in the sea-breeze front. High values of SO2 concentrations computed in the model were accumulating at the vicinity of the sea-breeze gravity current, whose height was determined by sodar, and at the altitude of which the lidar detected a layer of high reflectivity. The polluted air mass, above the sea and the gravity current and which was containing the pollutants emitted from the industrial area, seemed to turned lately in a stable multilayered structure. Such dynamical conditions are keen to enhance the concentration of secondary pollutants during sunny days, as suggested by the vertical profiles of ozone concentration measured by the lidar.

  5. Simple Kidney Cysts

    MedlinePlus

    ... Information American Kidney Fund National Kidney Foundation MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... Organizations​​ . (PDF, 345 KB)​​​​​ Alternate Language URL Simple Kidney Cysts Page Content On this page: What are ...

  6. Acquired Cystic Kidney Disease

    MedlinePlus

    ... Kidney Patients Life Options National Kidney Foundation MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... PDF, 345 KB)​​​​​ Alternate Language URL Acquired Cystic Kidney Disease Page Content On this page: What is ...

  7. Robotic assisted kidney transplantation

    PubMed Central

    Modi, Pranjal; Pal, Bipinchandra; Modi, Jayesh; Kumar, Suresh; Sood, Akshay; Menon, Mani

    2014-01-01

    Kidney transplantation is the standard of care for patients with end stage renal disease. While open surgery remains the gold standard, minimally invasive surgery has recently been introduced for the recipient undergoing kidney transplantation. We review the evolution of techniques of minimally invasive surgery for kidney transplantation with specific emphasis on technical aspects of robotic assisted kidney transplantation. PMID:25097315

  8. Kidney Stones

    PubMed Central

    Kleeman, Charles R.; Coburn, Jack W.; Brickman, Arnold S.; Lee, David B. N.; Narins, Robert G.; Ehrlich, Richard M.

    1980-01-01

    The prevalence of kidney stones has steadily risen during this century; passage of a calculus and a positive family history increase the probability of recurrence. Findings from recent studies on the cause of renal calculi have stressed crystallization and crystal aggregation of stone minerals from supersaturated urine, rather than excessive organic matrix. Absence of normal urine inhibitors of calcium salts is also stressed. Formation of calcium oxalate stones is the major problem. Therapy with decreased calcium and oxalate intake, thiazides, phosphate salts and allopurinol in various combinations has substantially decreased the prevalence of recurrent stones. The rationale for the use of allopurinol is that uric acid salts enhance the tendency for calcium oxalate to crystallize from supersaturated urine. The hypercalciuria seen in 30 percent to 40 percent of patients with oxalate stones is usually caused by intestinal hyperabsorption of calcium. Although patients with uric acid calculi constitute only a small fraction of those in whom stones form, they represent a group in whom good medical therapy, based on sound physiologic principles, has proved extremely successful. Renal tubular syndromes lead to nephrocalcinosis and lithiasis through hypercalciuria, alkaline urine and hypocitraturia, the latter an inhibitor of calcium salt precipitation. Recent advances in surgical techniques are discussed, including the rationale for removing staghorn calculi. The ileal ureter and coagulum pyelolithotomy deserve special emphasis. ImagesFigure 2.Figure 4.Figure 5.Figure 7. PMID:7385835

  9. Learning to be a midwife in the clinical environment; tasks, clinical practicum hours or midwifery relationships.

    PubMed

    Ebert, Lyn; Tierney, Olivia; Jones, Donovan

    2016-01-01

    Discussions continue within the midwifery profession around the number of and type of clinical experiences required to ensure competent midwifery graduates. Introduction of the three year Bachelor of Midwifery in Australia, almost two decades ago, was intended to reduce the pressure students were under to complete their academic requirements whilst ensuring students developed midwifery practice that encapsulates the philosophical values of midwifery. Currently, midwifery students are mandated to achieve a minimum number of clinical skills and Continuity of Care Experience (CCE) relationships in order to register upon completion of their degree. To achieve these experiences, universities require students to complete a number of clinical practicum hours. Furthermore students are required to demonstrate competent clinical performance of a number of clinical skills. However, there is no evidence to date that a set number of experiences or hours ensures professional competence in the clinical environment. The aim of this paper is to promote discussion regarding the mandated requirements for allocated clinical practicum hours, specified numbers of clinical-based skills and CCE relationships in the context of learning to be a midwife in Australia. PMID:26409311

  10. Chronic kidney disease

    MedlinePlus

    ... nlm.nih.gov/pubmed/15114537 . Kidney Disease: Improving Global Outcomes (KDIGO) Anemia Work Group. KDIGO Clinical Practice ... pdf/KDIGO-Anemia%20GL.pdf . Kidney Disease: Improving Global Outcomes (KDIGO) Blood Pressure Work Group. KDIGO Clinical ...

  11. Acute arterial occlusion - kidney

    MedlinePlus

    ... quickly or it is affecting the only working kidney. Treatment to open the artery may include: Clot-dissolving medicines (thrombolytics) Medicines that prevent the blood from ... kidney failure. Medicines to lower cholesterol may be needed ...

  12. Kidney transplant - series (image)

    MedlinePlus

    ... functions that both kidneys perform in healthy people. Kidney transplant recipients are required to take immunosuppressive medications for the rest of the lives, to prevent immune rejection of the transplanted organ.

  13. Medullary cystic kidney disease

    MedlinePlus

    ... blood test Creatinine clearance - blood and urine Uric acid blood test Urine specific gravity (will be low) The following tests can help diagnose this condition: Abdominal CT scan Abdominal ultrasound Kidney biopsy Kidney ultrasound

  14. Acute kidney failure

    MedlinePlus

    ... days) loss of your kidneys' ability to remove waste and help balance fluids and electrolytes in your ... your kidneys work again and prevent fluid and waste from building up in your body while they ...

  15. Kidney Disease (Nephropathy)

    MedlinePlus

    ... act as filters. Their job is to remove waste products from the blood. Sometimes this filtering system ... Failing kidneys lose their ability to filter out waste products, resulting in kidney disease. How Does Diabetes ...

  16. Kidney Replacement Therapy

    MedlinePlus

    ... control. Hemodialysis In hemodialysis, an artificial kidney removes waste from the blood. A surgeon must first create ... time. Blood travels through the artificial kidney, where waste products are filtered out, and the clean blood ...

  17. Beginning Counseling Practicum: An Evaluation of the State of the Art in Large National Counselor Training Programs.

    ERIC Educational Resources Information Center

    Wegner, Kenneth W.; Lehr, Ellen

    This study was designed to assess the current state of the art in master's level counseling practica, and to compare this with ACES Standards (1973) for recommended improvements in counselor training. A checklist instrument was used to secure information on theoretical approaches, practica models and focus, pre-practicum preparation, types of…

  18. Regulating the Writing Process in the Teacher Training Practicum Guided by Feedback at the University of Barcelona

    ERIC Educational Resources Information Center

    Vidiella, Maria-Cinta Portillo; Garcia, Elena Cano

    2016-01-01

    This is a longitudinal study that focuses on blog-writing for the purpose of self-assessing competencies, and which was carried out within the practicum of a degree course in Primary Education Teaching at the University of Barcelona. Over the course of three academic years, students and a teacher have used a Platform 2.0 program, specially created…

  19. The Daily Events and Emotions of Master's-Level Family Therapy Trainees in Off-Campus Practicum Settings

    ERIC Educational Resources Information Center

    Edwards, Todd M.; Patterson, Jo Ellen

    2012-01-01

    The Day Reconstruction Method (DRM) was used to assess the daily events and emotions of one program's master's-level family therapy trainees in off-campus practicum settings. This study examines the DRM reports of 35 family therapy trainees in the second year of their master's program in marriage and family therapy. Four themes emerged from the…

  20. The Practical Source of Educational Knowledge for Pre-Service Teachers in Confronting Field-Based Challenges in School Practicum

    ERIC Educational Resources Information Center

    Tsai, Hsien-Chang; Liu, Shih-Hsiung

    2013-01-01

    Educational value in teacher education courses is unquestioned; however, there are still many doubts about the practicality of the knowledge acquired from university courses and a field-based course in school practicum. The purpose of this study is to identify the practicality of the educational knowledge from the above courses for pre-service…

  1. Learning "Rules" of Practice within the Context of the Practicum Triad: A Case Study of Learning to Teach

    ERIC Educational Resources Information Center

    Chalies, Sebastien; Escalie, Guillaume; Stefano, Bertone; Clarke, Anthony

    2012-01-01

    This case study sought to determine the professional development circumstances in which a preservice teacher learned rules of practice (Wittgenstein, 1996) on practicum while interacting with a cooperating teacher and university supervisor. Borrowing from a theoretical conceptualization of teacher professional development based on the postulates…

  2. A Longitudinal Measure of the Perceptual Impact of a Cultural Diversity Teaching Practicum on the Interpersonal Competency of Student Teachers.

    ERIC Educational Resources Information Center

    Bell, Lloyd C.

    A study evaluated the longitudinal effect of a planned in-school practicum experience addressing cultural diversity on the self-perception of student teachers regarding their interpersonal competence in such situations. Subjects were 18 student teachers of agricultural education and 6 student teachers of family and consumer science enrolled in the…

  3. Articulating Learning Objectives for an Undergraduate Teaching Assistant Program: Merging Teaching Practicum, Leadership Seminar, and Service Learning

    ERIC Educational Resources Information Center

    Murray, Jeffrey W.

    2015-01-01

    Since its inception in 2009, the Undergraduate Teaching Assistant Program (in the Department of Focused Inquiry at Virginia Commonwealth University) has evolved and expanded into an amalgamation of three distinct but overlapping elements: (i) teaching practicum, (ii) leadership seminar, and (iii) service learning experience. But only recently have…

  4. Not Just Any Direct Experience Will Do: Recasting the Multicultural Teaching Practicum as Active, Collaborative and Transformative

    ERIC Educational Resources Information Center

    DePalma, Renee; Rego, Miguel A. Santos; Moledo, Maria del Mar Lorenzo

    2006-01-01

    Providing a teaching practicum where university students preparing to be teachers can interact with children from different cultures has been widely praised as an effective means to improve teachers' cross-cultural sensitivity and teaching effectiveness. However, some research suggests that direct experience with minority children may in fact…

  5. What about Me?: A Practicum Addressing the Needs of Children Who Have a Preschool Sibling with Impaired Hearing.

    ERIC Educational Resources Information Center

    Weston, Marsha C.

    This practicum developed a special program to serve the elementary school child who has a preschool sibling with a hearing impairment. A special book addressing the cognitive and emotional needs of the siblings was written and distributed to 35 children whose families were enrolled in a clinic-sponsored correspondence program and to 15 children…

  6. The Establishment of a Comprehensive High School Renewal Site in the Erie, Pa. Public Schools. Maxi II Practicum.

    ERIC Educational Resources Information Center

    Cianflocco, Sam C.

    This practicum report describes in detail the efforts of a High School Task Force made up of 21 teachers to establish and operate a model high school as part of a new 4-4-4 educational plan for the Erie, Pennsylvania, schools. The Strong Vincent Comprehensive High School Renewal Site utilized curriculum revision, quarter course offerings, and…

  7. A Model for Providing Guidance Services in Elementary Schools: A Generalist-Preventive Approach. Implemented Model. Maxi II Practicum.

    ERIC Educational Resources Information Center

    Horne, Sydney B.

    The purpose of this practicum was to develop, implement, and evaluate a model for elementary school guidance at Northwoods Elementary School, if the need for such a model could be demonstrated. The need was demonstrated, the model was developed and tested. Subsequent investigation demonstrated that guidance services were increased as a result of…

  8. Practicum as a Space and Time of Transformation: Self-Narrative of a Physical Education Pre-Service Teacher

    ERIC Educational Resources Information Center

    Margarida, Alves; Ana, Pereira; Amandio, Graca; Paula, Batista

    2012-01-01

    Understanding the role of the practicum in the PI (professional identity) construction and reconstruction within a pre-service teacher is crucial, since this is a remarkable moment in their initial training. This moment provides new feelings and challenges, and it represents the transition from students (pre-service teacher) to teachers…

  9. The Problematic Nature of the Practicum: A Key Determinant of Pre-Service Teachers' Emerging Inquiry-Based Science Practices

    ERIC Educational Resources Information Center

    Fazio, Xavier; Melville, Wayne; Bartley, Anthony

    2010-01-01

    This article disseminates findings from a multi-year study regarding secondary preservice science teachers' perceptions toward inquiry-based science teaching, and the extent these perceptions are augmented by their practicum. While findings indicated that preservice teachers did improve their understanding and capability of using scientific…

  10. How School and University Supervising Staff Perceive the Pre-Service Teacher Education Practicum: A Comparative Study

    ERIC Educational Resources Information Center

    Allen, Jeanne M.; Ambrosetti, Angelina; Turner, David

    2013-01-01

    This paper reports on research conducted in two Australian universities to evaluate factors that are perceived to significantly impact on the professional experiences of pre-service teachers during practicum. Contextualised within teacher education programs in an urban university in Tasmania and a regional university in Queensland, the particular…

  11. Learning to Teach English Language in the Practicum: What Challenges do Non-Native ESL Student Teachers Face?

    ERIC Educational Resources Information Center

    Gan, Zhengdong

    2013-01-01

    This study investigates the challenges sixteen non-native preservice ESL teachers in a Bachelor of Education (English Language) (BEdEL) programme from Hong Kong experienced in an eight-week teaching practicum. Qualitative data from semi-structured interviews and reflective journals were collected from all 16 participants to obtain a detailed…

  12. Teaching Practicum Assessment in Post-Apartheid Teacher Education: Is It Self-Serving or Serving Students?

    ERIC Educational Resources Information Center

    Davids, M. Noor

    2015-01-01

    This article investigates common understandings and practices of a group of supervisors assessing students during the Teaching Practicum in South Africa. In the light of this context and the need for a constructivist approach to develop students to be able to teach in diverse contexts, the question that the research intends to answer is as…

  13. "Baby Teachers": How Pre-Service Early Childhood Students Transform Their Conceptions of Teaching and Learning through an Infant Practicum

    ERIC Educational Resources Information Center

    Recchia, Susan L.; Shin, Minsun

    2010-01-01

    This qualitative study explores how working with infants changed pre-service early childhood students' thinking about important aspects of early childhood education. Through a qualitative analysis of four pre-service early childhood students' weekly dialogue journals during a required, one-semester infant practicum, the authors discovered how the…

  14. How Important Is Practicum to Pre-Service Teacher Development for Inclusive Teaching? Effects on Efficacy in Classroom Management.

    ERIC Educational Resources Information Center

    Sokal, Laura; Woloshyn, Debra; Funk-Unrau, Savannah

    2013-01-01

    Sixty pre-service teachers were surveyed about their confidence, concerns, and efficacy for inclusive classroom teaching before and after a course on inclusive education. Some students experienced a practicum in an inclusive setting alongside the coursework, and some students did not. Both groups made significant gains in all dependent variables…

  15. We're Actually Comfortable with Diversity: Affirming Teacher Candidates for Culturally Relevant Reading Pedagogy in Urban Practicum

    ERIC Educational Resources Information Center

    Hill, K. Dara

    2012-01-01

    This article chronicles the perspectives of two teacher candidates who displayed comfort with cultural issues and teaching for social justice, in contrast with many of their peers in the program who were uncomfortable with diversity. Their field experiences in a piloted urban reading practicum are documented, as part of a partnership with a…

  16. German Literature and Culture under "Revue": Learner Autonomy and Creativity through the Theme-Based Theater Practicum

    ERIC Educational Resources Information Center

    Koerner, Morgan

    2012-01-01

    This article proposes a theatrically oriented, thematically structured course model for the upper level undergraduate German curriculum. The traditional focus on staging a single play in the German foreign language theater practicum neglects theater's potential to explore other literary genres and cultural texts and runs the danger of…

  17. Affordances and Limitations of a Special School Practicum as a Means to Prepare Pre-Service Teachers for Inclusive Education

    ERIC Educational Resources Information Center

    Walton, Elizabeth; Rusznyak, Lee

    2014-01-01

    As education systems worldwide embrace inclusive education in some form, pre-service teachers need to be prepared to be pedagogically responsive to diverse students and learning needs. While much learning for inclusion takes place in course work in higher education institutions, field experiences, including practicum placements, can complement…

  18. Creating a Space for the Development of Professional Knowledge: A Self-Study of Supervising Teacher Candidates during Practicum Placements

    ERIC Educational Resources Information Center

    Bullock, Shawn Michael

    2012-01-01

    This article reports a self-study that analyzes my developing pedagogy as a beginning teacher educator and supervisor of practicum field placements. The data consist of my journal entries describing experiences teaching and supervising a group of teacher candidates both at the university and in their host schools. Qualitative techniques of content…

  19. Creating Space for Pre-Service Teacher Professional Development during Practicum: A Teacher Educator's Self-Study

    ERIC Educational Resources Information Center

    Mukeredzi, Tabitha G.

    2015-01-01

    This article reports on my self-study of leading cohorts of Bachelor of Education student teachers through collaborative reflections applying reflective questions strategy during four weeks of residential practicum in a rural school. I explore the potential for reflective questions approach as an effective tool for reflection and professional…

  20. An Exploration of Counseling Practicum Students' Experiences in Department-Based and Community-Based Settings

    ERIC Educational Resources Information Center

    DeLorge Minges, Corrie

    2012-01-01

    Counselor educators are continually improving the quality of their training programs. The purpose of the present study was to investigate counseling students' practicum experiences and development in community-based and department-based settings. The framework for this study was based on Stoltenberg's integrated developmental model,…

  1. A Promising Practicum Pilot--Exploring Associate Teachers' Access and Interactions with a Web-Based Learning Tool

    ERIC Educational Resources Information Center

    Petrarca, Diana

    2013-01-01

    This paper explores how a small group of associate teachers (i.e., the classroom teachers who host, supervise, and mentor teacher candidates during practicum placements) accessed and interacted with the Associate Teacher Learning Tool (ATLT), a web-based learning tool created specifically for this new group of users. The ATLT is grounded in…

  2. Affordances and Limitations of a Special School Practicum as a Means to Prepare Pre-Service Teachers for Inclusive Education

    ERIC Educational Resources Information Center

    Walton, Elizabeth; Rusznyak, Lee

    2014-01-01

    As education systems worldwide embrace inclusive education in some form, pre-service teachers need to be prepared to be pedagogically responsive to diverse students and learning needs. While much learning for inclusion takes place in course work in higher education institutions, field experiences, including practicum placements, can complement

  3. Flu Season and Your Kidneys

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  4. Diabetes and Chronic Kidney Disease

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  5. Kidney Disease Risks among Hispanics

    MedlinePlus

    ... an AKF screening Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... our Northeast Region. Kidney Action Day Kidney Action Day Our late spring event is an elegant fundraiser ...

  6. Utilizing TRMM to Analyze Sea Breeze Thunderstorm Patterns During El Nino Southern Oscillations and Their Effects upon Available Fresh Water for South Florida Agricultural Planning and Management

    NASA Technical Reports Server (NTRS)

    Cooley, Clayton; Billiot, Amanda; Lee, Lucas; McKee, Jake

    2010-01-01

    Water is in high demand for farmers regardless of where you go. Unfortunately, farmers in southern Florida have fewer options for water supplies than public users and are often limited to using available supplies from surface and ground water sources which depend in part upon variable weather patterns. There is an interest by the agricultural community about the effect weather has on usable surface water, however, research into viable weather patterns during La Nina and El Nino has yet to be researched. Using rainfall accumulation data from NASA Tropical Rainfall Measurement Mission (TRMM) satellite, this project s purpose was to assess the influence of El Nino and La Nina Oscillations on sea breeze thunderstorm patterns, as well as general rainfall patterns during the summer season in South Florida. Through this research we were able to illustrate the spatial and temporal variations in rainfall accumulation for each oscillation in relation to major agricultural areas. The study period for this project is from 1998, when TRMM was first launched, to 2009. Since sea breezes in Florida typically occur in the months of May through October, these months were chosen to be the months of the study. During this time, there were five periods of El Nino and two periods of La Nina, with a neutral period separating each oscillation. In order to eliminate rainfall from systems other than sea breeze thunderstorms, only days that were conducive to the development of a sea breeze front were selected.

  7. A Numerical Study of A Sea-breeze Front and Its Interaction With The Convective Boundary Layer Over Land During Cape

    NASA Astrophysics Data System (ADS)

    Hsu, W. R.; Wu, C. C.; Sun, W. Y.

    A sea-breeze front forms at the leading edge of the circulation induced by the con- vective boundary layer over land during daytime. Once the sea-breeze circulation is established, the front usually propagates onshore and sweeps through the convection cells inside the CBL over land near coastal area. The intensity of the front may change from time to time as it merges with those convection cells, while the front also modi- fies the basic characteristics of the CBL (such as surface fluxes, cloud thickness, etc). The interaction between the front and the CBL can be very complicated, and the sit- uation differs from cases to cases with different environmental conditions. With an extensive observation network, the 1991 Convection and Precipitation/Electrification Experiment (CaPE) have documented the phenomenon for several sea-breeze events in southern Florida, USA. In this study, we used the NTU/Purdue nonhydrostatic numerical model to simulate and investigate one of the sea-breeze events during CaPE. The numerical model is quite complete as it includes calculations for Coriolis force, land processes, clouds, the surface similarity equation and a prognostic equation for turbulence kinetic en- ergy in addition to a basic dynamic framework. A major advantage of the model is the use of a forward-backward integration scheme to treat high frequency and internal gravity waves explicitly. The numerical procedure is shown in one of authorsS earlier work to be quite accurate and also free from unstable computational modes. The re- sults showed that the model is capable of reproducing many interesting features of the phenomenon. These features include the CBL development over land, cloud pattern, frontal characteristics, etc. The turbulence and mixing properties of the CBL under the influence of the simulated sea-breeze circulation is discussed in the paper.

  8. Study of the development of the sea breeze and its micro-scale structure at a coastal site using a Multi-Tone Sodar system

    NASA Astrophysics Data System (ADS)

    DeLeo, L.; Federico, S.; Sempreviva, Am; Pasqualoni, L.; Avolio, E.; Bellecci, C.

    2008-05-01

    The purpose of this paper is to study the development of the coastal flow i.e. its micro-scale characteristics within the surface layer at the sea-land transition and to investigate the development of inland formation of cloudiness during merging of sea/land and valley- mountain breeze regimes. The area is the mountainous southern tip of Italy, about 50 km wide and 300 km long, in the Central Mediterranean Basin. Here, thermal meso-scale circulations and cloud formations on the mountains are pronounced because of their peculiar elongated shape. Upslope flow is very strong, due to the steepness of Apennines, and sea-breeze circulation is supported by the thermally forced meso-scale flows. Here, we present preliminary results from a case study during six consecutive days where sea/land breeze circulation was well developed and discuss the effect on the formation of inland clouds. Sea breeze days are selected by a sodar and surface meteorological station measurements. Cloud development is analyzed by subjective inspection of METEOSAT MSG images in the visible channel. The WRF (Weather Research and Forecasting) model is used to analyze the meteorological situation. The Institute of Atmospheric Sciences and Climate CNR-ISAC in house modular Multi-Tone Sodar system (PC-MTSodar) and the surface meteorological station are installed and operated at a coastal site located at about 300 m from the coastline. Preliminary results show that the methodology is viable to study the development of thermally forced meso-scale circulations over Calabria at micro and large scale and that these circulations can be intense over the peninsula thanks to its peculiar shape. It is shown that the formation of afternoon cumulus clouds, which may result in rainfall, is modulated by synoptic scale conditions. Further development will be a climatic assessment of the role of breezes on local climate.

  9. Transformed shoreline-following horizontal coordinates in a mesoscale model: A sea-land-breeze case study

    SciTech Connect

    Berri, G.J.; Nunez, M.N. Pabellon II Ciudad Universitaria, Buenos Aires )

    1993-05-01

    A hydrostatic and incompressible mesoscale model with transformed horizontal coordinates is presented. The model is applied to study the sea-land-breeze circulation over Rio de La Plata. One of the new coordinates is shoreline-following and the other one is locally quasi-perpendicular to the first one. The original set of equations in the Cartesian coordinates is rewritten in the curvilinear coordinates. This transformation is useful provided that the curvilinear coordinates are close to being orthogonal. The horizontal domain covers 250 km [times] 250 km, and the vertical domain is 2 km deep. To predict the sea-land-breeze circulation the model is integrated over 12 h. The forcing of the model is a cyclic perturbation of the surface temperature. The changes in the wind direction during the day are in good agreement with the observations from six weather stations in the region. The same program code is applied to uniform domains of different resolutions in order to test the coordinate transformation. Results show that the predictions based upon the variable-resolution version resemble ones obtained using high uniform resolution but consume only one-fourth the computer time needed by the latter. Comparison of the vertical velocity patterns predicted by the model to the cumulus clouds distribution observed from satellite images show a very good agreement too. The authors believe that all these results justify the use of the coordinate transformation in this type of model, although further verifications are needed in order to draw more definitive conclusions. 28 refs., 11 figs.

  10. Normal black kidney

    PubMed Central

    Yarmohamadi, Aliasghar; Rezayat, Ali Reza Akhavan; Memar, Bahram; Rahimi, Hamid Reza; Cand, PhD

    2014-01-01

    A black kidney has 3 major differential diagnoses: hemosiderosis, lipofuscin pigment and melanotic renal cell carcinoma. Excluding lipofuscin, the other 2 are accompanied by an abnormal renal function. We report on a 25-year-old man who intended to donate a kidney to his cousin. On the operating room table when we incised the left flank region and exposed the kidney, we found a firm and black kidney so the operation was cancelled due to potential vascular injuries. Days after the incomplete procedure, we reviewed the donor’s biochemistry and imaging to reassess his renal function, but the results showed quite normal renal function again. The result of Ham test was also negative. Two weeks later, we began the operation, removed the same left kidney and found that it was in the same conditions as it was before. We took the opportunity to send needle biopsies of the kidney for histopathologic analysis. The analysis showed a melanotic kidney without pathological changes in glomeruli and interstitium and vessels. A black kidney may result in hemosiderin, lipofuscin or melanin deposits in the kidney, which can confirm the diagnosis; however, special tests for underlying disease and renal function should be considered. Some causes of black kidney lead to abnormal function, but our patients’s kidney returned to normal. PMID:24839502

  11. Primary preservice teachers' understandings of volume: The impact of course and practicum experiences

    NASA Astrophysics Data System (ADS)

    Zevenbergen, Robyn

    2005-02-01

    Mathematics teacher education programs are designed with an intention, explicit or implicit, to produce graduates who are competent in both pedagogic knowledge and discipline knowledge. This paper explores students' experiences in coming to learn mathematics and mathematics education. Using an example from a quiz question, supplemented with follow-up interviews with students, the paper raises questions as to the effectiveness of programs that adopt traditional approaches to the teaching of mathematics. It is shown how a functionalist perspective was adopted by many of the preservice teachers, which engendered a reproductive approach to teaching. The data raised concerns about preservice teachers' knowledge of volume, their pedagogic knowledge, and the role of the practicum on their learning.

  12. Living Related Kidney Donors

    PubMed Central

    Lazarovits, Andrew I.

    1992-01-01

    A kidney transplant is the treatment of choice for suitable patients with end-stage renal disease. The living related kidney donor represents an important source of kidneys because graft survival is much better and there is a critical shortage of organ donors. This article reviews the risks to the donor and the means by which these individuals are assessed in order to minimize the risk. PMID:21221370

  13. HCV and the kidney.

    PubMed

    Corouge, Marion; Vallet-Pichard, Anaïs; Pol, Stanislas

    2016-01-01

    Chronic hepatitis C (CHC) is significantly associated with a risk of renal deterioration over time. Renal impairment, especially stage 4-5 chronic kidney disease, increases the risk of: (i) the prevalence and incidence (in dialysis/transplantation) of hepatitis C virus (HCV) infection; (ii) liver deterioration during kidney transplantation and (iii) allograft failure and patient mortality. HCV-infected dialysis patients have a higher mortality than non-infected dialysis patients and than HCV-infected kidney recipients. The harmful impact of HCV emphasizes the need for oral antiviral therapies in patients with chronic kidney disease. Symptomatic cryoglobulinemic vasculitis and extensive liver fibrosis are already approved indications for early access to oral antiviral treatment. Patients with stage 4-5 chronic kidney disease should also be given priority: dialysis patients (whatever the stage of fibrosis and whether or not they are candidates for kidney transplantation) as well as all kidney recipients. The results of treatment of HCV with direct-acting antiviral (DAAs) drugs in patients with late chronic kidney disease are excellent, similar to those in the general population, although additional clinical trials are definitely needed, particularly to optimize adjustment of treatment to kidney function and determine the risk of drug-drug interactions. PMID:26725894

  14. The kidney allocation system.

    PubMed

    Friedewald, John J; Samana, Ciara J; Kasiske, Bertram L; Israni, Ajay K; Stewart, Darren; Cherikh, Wida; Formica, Richard N

    2013-12-01

    The current kidney allocation system for transplants is outdated and has not evolved to reflect the changing demographics of patients on the waiting list. This article proposes a new system for kidney allocation, which more appropriately incorporates the biology of highly sensitized patients into the waiting-time scoring algorithm. This system will significantly reduce mismatches between possible donor kidney longevity and life expectancy of recipients, and makes incremental advances toward more geographic sharing. The proposed system makes significant progress toward eliminating deficiencies in the current system, and has the potential to increase the supply of available kidneys. PMID:24206858

  15. Kidney tissue reconstruction by fetal kidney cell transplantation: effect of gestation stage of fetal kidney cells.

    PubMed

    Kim, Sang-Soo; Gwak, So-Jung; Han, Joungho; Park, Heung Jae; Park, Moon Hyang; Song, Kang Won; Cho, Seung Woo; Rhee, Yun Hee; Chung, Hyung Min; Kim, Byung-Soo

    2007-06-01

    Dialysis and kidney transplantation, current therapies for kidney failure, have limitations such as severe complications, donor shortage, and immune-related problems. The development of an alternative treatment for kidney failure is demanded. The present study shows that the transplantation of fetal kidney cells reconstitutes functional kidney tissue, and that the gestation stage of kidney cells influences the kidney reconstitution. Fetal kidney cells were isolated from metanephroi of rat fetuses at various gestation stages and transplanted into the omentum or kidney of immunodeficient mice. Immunophenotype analysis of fetal kidney cells showed apparent expression of stem cell markers. Three weeks after transplantation, histological analyses of retrieved grafts revealed the formation of kidney structures, including fluorescently labeled transplanted cells, suggesting the potential of fetal kidney cells to reconstitute kidney tissues. The grafts retrieved from omentum contained cystic fluids with concentrated solutes. However, transplanted early fetal kidney cells had also differentiated into nonrenal tissues such as bone and cartilage. In addition, transplantation of fetal kidney cells from a later gestation stage resulted in poor kidney structure formation. Kidney-specific genes were strongly expressed in the earlier cell transplants. The cells at an earlier gestation stage had higher colony forming ability than the cells at a later stage. This study demonstrates the reconstitution of kidney tissue by transplanting fetal kidney cells and the presence of an optimal time window in which fetal kidney cells regenerate kidney tissues. Disclosure of potential conflicts of interest is found at the end of this article. PMID:17548530

  16. Enhancing the Practicum Experience for Pre-service Chemistry Teachers Through Collaborative CoRe Design with Mentor Teachers

    NASA Astrophysics Data System (ADS)

    Hume, Anne; Berry, Amanda

    2013-01-01

    This paper reports findings from an ongoing study exploring how the Content Representation (CoRe) design can be used as a tool to help chemistry student teachers begin acquiring the professional knowledge required to become expert chemistry teachers. Phase 2 of the study, reported in this paper, investigated how collaboration with school-based mentors (associate teachers) on teaching practice (practicum) might impact on this process and student teachers' development of their pedagogical content knowledge (PCK). The collaboration involved identifying and discussing pedagogical issues related to a practicum-teaching topic using a student teacher's draft CoRe as a starting point and ongoing focus for the professional dialogue. Practicum offered an opportunity for aspects of student teachers' PCK, as embodied in their draft CoRes, to be explored and expanded upon in classroom programmes with the support and input of associate teachers. The findings were influenced by different contextual factors; however, the student teachers found their CoRes to be very useful frameworks for engaging in focussed professional dialogue with their teaching mentors. They valued the expertise, currency of knowledge and mentoring of their associates and reported positively about the contribution this support made to their PCK development via the CoRe design process and the transformation of the CoRe into classroom teaching.

  17. 10 Symptoms of Kidney Disease

    MedlinePlus

    ... the liver, can cause pain. Kidney infections and kidney stones can cause severe pain, often in spasms. Bladder infections can cause burning when you urinate. People who have medullary sponge kidney say it is painful. What patients said: "About ...

  18. Keep Your Kidneys Healthy

    MedlinePlus

    ... Albumin Children and Kidney Disease Additional Kidney Information Contact Us Health Information Center Phone: 1-800-860- ... to share this content freely. September 17, 2014​​​​ Contact Us Health Information Center Phone: 1-800-860- ...

  19. The role of bay breezes and regional transport on a high surface ozone episode during the Houston, Texas DISCOVER-AQ field campaign

    NASA Astrophysics Data System (ADS)

    Loughner, C.; Follette-Cook, M. B.; Pickering, K. E.; Estes, M. J.

    2014-12-01

    The highest observed surface ozone concentrations in the Houston metropolitan area in 2013 occurred on September 25, which coincided with the Texas DISCOVER-AQ (Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality) field campaign. Surface ozone was elevated throughout the Houston metropolitan area. Maximum 8-hour average ozone peaked along the western shore of Galveston Bay, reaching 124 ppbv, almost 50 ppbv above the current EPA standard of 75 ppbv, at La Porte Sylvan Beach. Continental air pollution from the north and northeast was transported into the Houston metropolitan area where it mixed with locally generated emissions. A bay breeze circulation formed causing pollutants that were transported out over the water in the morning to recirculate back inland where they mixed with freshly emitted pollution near the bay breeze convergence zone. The highest surface ozone concentrations were reported near the bay breeze front at La Porte Sylvan Beach. This ozone episode will be presented using measurements made during the DISCOVER-AQ field campaign and WRF and CMAQ model simulations.

  20. A study of atmospheric dispersion of radionuclides at a coastal site using a modified Gaussian model and a mesoscale sea breeze model

    NASA Astrophysics Data System (ADS)

    Venkatesan, R.; Mathiyarasu, R.; Somayaji, K. M.

    Ground level concentration and sky-shine dose due to radioactive emissions from a nuclear power plant at a coastal site have been estimated using the standard Gaussian Plume Model (GPM) and the modified GPM suggested by Misra (Atmospheric Environment 14 (1980) 397), which incorporates fumigation effect under sea breeze condition. The difference in results between these two models is analysed in order to understand their significance and errors that would occur if proper choice were not made. Radioactive sky-shine dose from 41Ar, emitted from a 100 m stack of the nuclear plant is continuously recorded by environmental gamma dose monitors and the data is used to validate the modified GPM. It is observed that the dose values increase by a factor of about 2 times than those of the standard GPM estimates, up to a downwind distance of 6 km during sea breeze hours. In order to examine the dispersion of radioactive effluents in the mesoscale range, a sea breeze model coupled with a particle dispersion model is used. The deposited activity, thyroid dose and sky-shine radioactive dose are simulated for a range of 30 km. In this range, the plume is found to deviate from its straight-line trajectory, as otherwise assumed in GPM. A secondary maximum in the concentration and the sky-shine dose is also observed in the model results. These results are quite significant in realistically estimating the area affected under any unlikely event of an accidental release of radioactivity.

  1. Bioengineering Kidneys for Transplantation

    PubMed Central

    Madariaga, Maria Lucia L.; Ott, Harald C.

    2014-01-01

    One in ten Americans suffer from chronic kidney disease, and close to 90,000 people die each year from causes related to kidney failure. Patients with end-stage renal disease are faced with two options: hemodialysis or transplantation. Unfortunately, the reach of transplantation is limited because of the shortage of donor organs and the need for immunosuppression. Bioengineered kidney grafts theoretically present a novel solution to both problems. Herein we discuss the history of bioengineering organs, the current status of bioengineered kidneys, considerations for the future of the field, and challenges to clinical translation. We hope that by integrating principles of tissue engineering, and stem cell and developmental biology, bioengineered kidney grafts will advance the field of regenerative medicine while meeting a critical clinical need. PMID:25217267

  2. [Promoting Living Kidney Transplantation].

    PubMed

    Lin, Chiu-Chu

    2016-04-01

    Kidney transplantation is the best approach for treating patients with end stage renal disease, offering patients the best chance of returning to normal health. While the techniques used in kidney transplantation surgery are mature and highly successful, there is a severe shortage of donor organs. Statistics show a serious imbalance between organ donations and patients on the waiting list for organ transplantation. Moreover, evidence from empirical studies has shown a better transplantation outcome for patients who receive living donor transplantation than for those who receive organs from cadavers. Although using relatives as donors offers an effective way to reduce the problem of organ shortage, this strategy faces many challenges and many other factors affect the promotion of living donor transplantation. This article elaborates how cultural and psychological factors, kidney transplantation awareness, and ethics and laws impact upon living kidney donations and then proposes coping strategies for promoting living kidney transplantation. PMID:27026555

  3. Study of the thermal internal boundary layer during sea-breeze events in the complex coastal area of Marseille

    NASA Astrophysics Data System (ADS)

    Calmet, Isabelle; Mestayer, Patrice

    2016-02-01

    A revisit of two sea-breeze episodes is presented, based on higher spatial resolution large eddy simulations (LES) of the lower atmosphere over the coastal area of Marseille and measurements obtained during the June 2001 experimental campaign UBL-ESCOMPTE. The focus is on the development of thermal internal boundary layers (TIBL) over a complex topography: the dynamic and thermal mechanisms that contribute to the TIBL growth and its further degeneration into a convective mixed layer, the respective influences of the coast shape, the large-scale flow above and the local low-level slope flows. The high-resolution LES permits exploring the potential temperature and turbulent kinetic energy fields in relation with the evolution of TIBL depth and heat fluxes along representative streamlines. Several theoretical TIBL depth models are further compared to the LES-deduced inversion height and other parameters, leading to a discussion of the relationships between the values of these parameters, the respective influences of the governing physical phenomena, and the TIBL behaviour. A threshold value of 0.35 is proposed for the friction velocity to convective velocity scale ratio u */ w * between the two regimes where the TIBL is either dominated by dynamical kinetic energy production or controlled by buoyancy.

  4. What Is Kidney Cancer (Renal Cell Carcinoma)?

    MedlinePlus

    ... the key statistics about kidney cancer? What is kidney cancer? Kidney cancer is a cancer that starts ... and spread, see What Is Cancer? About the kidneys To understand more about kidney cancer, it helps ...

  5. Keep Your Kidneys Healthy: Catch Kidney Disease Early

    MedlinePlus

    ... please review our exit disclaimer . Subscribe Keep Your Kidneys Healthy Catch Kidney Disease Early Your kidneys aren’t very big—each is about the ... other substances inside your body. Unfortunately, if your kidneys start to malfunction, you might not realize it ...

  6. Medicines and Kidney Disease

    MedlinePlus

    ... Dialysis or Transplant Paying for Kidney Failure Treatment Contact Us Health Information Center Phone: 1-800-860- ... to share this content freely. ​​September 17, 2014 Contact Us Health Information Center Phone: 1-800-860- ...

  7. Sulfadiazine for kidney disease

    USGS Publications Warehouse

    Rucker, R.R.; Bernier, A.F.; Whipple, W.J.; Burrows, R.E.

    1951-01-01

    The blueback salmon fingerlings (Oncorhynchus nerka) at the U.S. Fish-Cultural Station at Winthrop, Washington, underwent an infection that was caused by a very short, Gram-positive, nonmotile, rod-shaped bacterium. A further description is impossible at this time, as the organism has not been grown satisfactorily for proper identification. The disease was characterized by white, raised areas of dead tissue mainly in the kidney: for this reason it is referred to as kidney disease. Belding and Merrill (1935) described a disease among the brook, brown, and rainbow trout at a State hatchery in Massachusetts which, from the description, might be the same as kidney disease. J.H. Wales of the California Division of Fish and Game described (unpublished manuscript, 1941) a disease in hatchery trout in California which seems to be identical to kidney disease.

  8. Testing for Kidney Disease

    MedlinePlus

    ... statement, and the Director's Update newsletter Offices & Divisions Organizational structure and descriptions ... kidney disease usually does not have signs (a change in your body) or symptoms (a change in ...

  9. Kidney (Renal) Failure

    MedlinePlus

    Advertisement Resize Text: Toggle navigation Find a Urologist Submit About Us What We Do Foundation History Leadership ... a kidney stone or scar tissue Share Symptoms Advertisement Patient Education Materials We provide free patient education ...

  10. Diabetes and Kidney Disease

    MedlinePlus

    ... NKF Newsroom Contact Us You are here Home » Diabetes - A Major Risk Factor for Kidney Disease Diabetes ... of your body. Are there different types of diabetes? The most common ones are Type 1 and ...

  11. Kidney Disease and Diabetes

    MedlinePlus

    ... Blood Pressure Tools & Resources Stroke More Kidney Disease & Diabetes Updated:Jan 26,2016 One of the more ... thereafter.) This content was last reviewed January 2016. Diabetes • Home • About Diabetes • Why Diabetes Matters Introduction Cardiovascular ...

  12. Acquired Cystic Kidney Disease

    MedlinePlus

    ... below the rib cage. The kid neys filter wastes and extra fluid from the blood to produce ... filters out many, but not all, of the wastes that healthy kidneys remove. Researchers believe that an ...

  13. Kidney Stones in Children

    MedlinePlus

    ... tract is the body’s drainage system for removing wastes and extra water. The urinary tract includes two ... kidneys filter about 3 ounces of blood, removing wastes and extra water. The wastes and extra water ...

  14. Kidney cell electrophoresis

    NASA Technical Reports Server (NTRS)

    Todd, P. W.

    1985-01-01

    Tasks were undertaken in support of two objectives. They are: (1) to carry out electrophoresis experiments on cells in microgravity; and (2) assess the feasibility of using purified kidney cells from embryonic kidney cultures as a source of important cell products. Investigations were carried out in the following areas: (1) ground based electrophoresis technology; (2) cell culture technology; (3) electrophoresis of cells; (4) urokinase assay research; (5) zero-g electrophoresis; and (6) flow cytometry.

  15. The medieval kidney.

    PubMed

    Ziegler, Joseph

    2002-07-01

    This article surveys the various perceptions of the kidney and its pathologies by encyclopedists, preachers, natural philosophers, surgeons and academic physicians around 1300. It focuses on the medical works of Arnau de Vilanova (d. 1311) and shows the medical discourse about the kidney in all its complexity. It draws attention to the incorporation of the medical nephrological debate into the scholastic frame, and to the close links between nephrology and astrology as well as alchemy. PMID:12097733

  16. Neonatal polycystic kidney disease.

    PubMed

    Verghese, Priya; Miyashita, Yosuke

    2014-09-01

    This article provides an up-to-date comprehensive review and summary on neonatal polycystic kidney disease (PKD) with emphasis on the differential diagnosis, clinical manifestations, diagnostic techniques, and potential therapeutic approaches for the major causes of neonatal PKD, namely hereditary disease, including autosomal recessive and autosomal dominant PKD and nonhereditary PKD, with particular emphasis on multicystic dysplastic kidney. A brief overview of obstructive cystic dysplasia and simple and complex cysts is also included. PMID:25155726

  17. [An experience applying the teaching strategies of cooperative learning and creative thinking in a mental-health nursing practicum for undergraduates at a technical college].

    PubMed

    Huang, Yu-Hsien; Lin, Mei-Feng; Ho, Hsueh-Jen; Chang, Lu-Na; Chen, Shiue

    2015-04-01

    Lack of knowledge and experience is prevalent in undergraduate students who are taking their clinical practicum for mental-health nursing. This issue negatively affects the learning process. This article shares an experience of implementing a practicum-teaching program. This program was developed by the authors to facilitate the cooperative learning and clinical care competence of students. A series of multidimensional teaching activities was designed by integrating the strategies of peer cooperation and creative thinking to promote group and individual learning. Results indicate that the program successfully encouraged the students to participate more actively in the learning process. Additionally, the students demonstrated increased competence in empathetic caring toward patients, stronger friendship relationships with peers, and improved self-growth. The authors hope this teaching program provides a framework to increase the benefits for students of participating in clinical practicums and provides a teaching reference for clinical instructors. PMID:25854950

  18. Signaling during Kidney Development

    PubMed Central

    Krause, Mirja; Rak-Raszewska, Aleksandra; Pietilä, Ilkka; Quaggin, Susan E.; Vainio, Seppo

    2015-01-01

    The kidney plays an essential role during excretion of metabolic waste products, maintenance of key homeostasis components such as ion concentrations and hormone levels. It influences the blood pressure, composition and volume. The kidney tubule system is composed of two distinct cell populations: the nephrons forming the filtering units and the collecting duct system derived from the ureteric bud. Nephrons are composed of glomeruli that filter the blood to the Bowman’s capsule and tubular structures that reabsorb and concentrate primary urine. The collecting duct is a Wolffian duct-derived epithelial tube that concentrates and collects urine and transfers it via the renal pelvis into the bladder. The mammalian kidney function depends on the coordinated development of specific cell types within a precise architectural framework. Due to the availability of modern analysis techniques, the kidney has become a model organ defining the paradigm to study organogenesis. As kidney diseases are a problem worldwide, the understanding of mammalian kidney cells is of crucial importance to develop diagnostic tools and novel therapies. This review focuses on how the pattern of renal development is generated, how the inductive signals are regulated and what are their effects on proliferation, differentiation and morphogenesis. PMID:25867084

  19. Signaling during Kidney Development.

    PubMed

    Krause, Mirja; Rak-Raszewska, Aleksandra; Pietilä, Ilkka; Quaggin, Susan E; Vainio, Seppo

    2015-01-01

    The kidney plays an essential role during excretion of metabolic waste products, maintenance of key homeostasis components such as ion concentrations and hormone levels. It influences the blood pressure, composition and volume. The kidney tubule system is composed of two distinct cell populations: the nephrons forming the filtering units and the collecting duct system derived from the ureteric bud. Nephrons are composed of glomeruli that filter the blood to the Bowman's capsule and tubular structures that reabsorb and concentrate primary urine. The collecting duct is a Wolffian duct-derived epithelial tube that concentrates and collects urine and transfers it via the renal pelvis into the bladder. The mammalian kidney function depends on the coordinated development of specific cell types within a precise architectural framework. Due to the availability of modern analysis techniques, the kidney has become a model organ defining the paradigm to study organogenesis. As kidney diseases are a problem worldwide, the understanding of mammalian kidney cells is of crucial importance to develop diagnostic tools and novel therapies. This review focuses on how the pattern of renal development is generated, how the inductive signals are regulated and what are their effects on proliferation, differentiation and morphogenesis. PMID:25867084

  20. Aerosol extinction properties over coastal West Bengal Gangetic plain under inter-seasonal and sea breeze influenced transport processes

    NASA Astrophysics Data System (ADS)

    Verma, S.; Priyadharshini, B.; Pani, S. K.; Bharath Kumar, D.; Faruqi, A. R.; Bhanja, S. N.; Mandal, M.

    2016-01-01

    We analysed the atmospheric aerosol extinction properties under an influence of inter-seasonal and sea breeze (SB) transport processes over coastal West Bengal (WB) Gangetic plain (WBGP). The predominant frequency of airmass back trajectory path was through the Arabian Sea (AS) during southwest monsoon (SWmon) and that through the Indo-Gangetic plain (IGP) during transition to winter (Twin) season and the Bay of Bengal during transition to summer (Tsumm) season. Aerosol surface concentration (Sconc) and aerosol extinction exhibited heterogeneity in the seasonal variability over coastal WBGP with their highest seasonal mean being during winter and summer seasons respectively. Seasonal mean extinction was respectively 17% and 30% higher during winter and summer seasons than that during SWmon. While angstrom exponent (AE) was less than one during SWmon, Tsumm, and summer seasons, it was near to one during Twin and winter monsoon (Wmon), and was more than one during winter season. Relative contribution (%) of upper (at altitude above 1 km) aerosol layer (UAL) to aerosol extinction during summer was four times of that during winter. Seasonally distinct vertical distribution of aerosol extinction associated with meteorological and SB influenced transport and that due to influence of high rise open burning emissions was inferred. Possible aerosol subtypes extracted during days in Tsumm were inferred to be mostly constituted of dust and polluted dust during daytime, in addition to polluted continental and smoke in UAL during nighttime. In contrast to that at nearby urban location (Kolkata, KOL), intensity of updraft of airmass evaluated during evening/SB activity hour (1730 local time, (LT)) at study site (Kharagpur, KGP) was as high as 3.5 times the intensity during near to noon hour (1130 LT); this intensity was the highest along coast of westBengal-Orissa. Enhanced Sconc and relative contribution of UAL to aerosol extinction (58% compared to 36% only at nearby urban location) was inferred associated with SB activity.

  1. Interstellar Neutral Helium in the Heliosphere from IBEX Observations. IV. Flow Vector, Mach Number, and Abundance of the Warm Breeze

    NASA Astrophysics Data System (ADS)

    Kubiak, Marzena A.; Swaczyna, P.; Bzowski, M.; Sokół, J. M.; Fuselier, S. A.; Galli, A.; Heirtzler, D.; Kucharek, H.; Leonard, T. W.; McComas, D. J.; Möbius, E.; Park, J.; Schwadron, N. A.; Wurz, P.

    2016-04-01

    Following the high-precision determination of the velocity vector and temperature of the pristine interstellar neutral (ISN) He via a coordinated analysis summarized by McComas et al., we analyzed the Interstellar Boundary Explorer (IBEX) observations of neutral He left out from this analysis. These observations were collected during the ISN observation seasons 2010-2014 and cover the region in the Earth's orbit where the Warm Breeze (WB) persists. We used the same simulation model and a parameter fitting method very similar to that used for the analysis of ISN He. We approximated the parent population of the WB in front of the heliosphere with a homogeneous Maxwell-Boltzmann distribution function and found a temperature of ˜9500 K, an inflow speed of 11.3 km s-1, and an inflow longitude and latitude in the J2000 ecliptic coordinates 251.°6, 12.°0. The abundance of the WB relative to ISN He is 5.7% and the Mach number is 1.97. The newly determined inflow direction of the WB, the inflow directions of ISN H and ISN He, and the direction to the center of the IBEX Ribbon are almost perfectly co-planar, and this plane coincides within relatively narrow statistical uncertainties with the plane fitted only to the inflow directions of ISN He, ISN H, and the WB. This co-planarity lends support to the hypothesis that the WB is the secondary population of ISN He and that the center of the Ribbon coincides with the direction of the local interstellar magnetic field (ISMF). The common plane for the direction of the inflow of ISN gas, ISN H, the WB, and the local ISMF is given by the normal direction: ecliptic longitude 349.°7 ± 0.°6 and latitude 35.°7 ± 0.6 in the J2000 coordinates, with a correlation coefficient of 0.85.

  2. An Ectopic Pelvic Kidney

    PubMed Central

    Bhoil, Rohit; Sood, Dinesh; Singh, Yash Paul; Nimkar, Kshama; Shukla, Anurag

    2015-01-01

    Summary Background If a kidney does not ascend as it should in normal fetal development, it remains in the pelvic area and is called a pelvic kidney. Often a person with a pelvic kidney will go through his/her whole life unaware of this condition, unless it is discovered during neonatal kidney ultrasound screening or if complications arise later in life due to this or a completely different reason and the condition is noted during investigations. Generally, this is not a harmful condition but it can lead to complications like in our case. With appropriate testing and treatment, if needed, an ectopic kidney should cause no serious long-term health complications and all that may be required for the patient is reassurance with advice to follow up at regular intervals. Case Report A 28-year-old male presented with recurrent pain in his lower left abdomen for one month and an episode of hematuria 3 days earlier accompanied by an attack of acute pain lasting for 3–4 hours. He gave a history of passing 2 small (about 5 mm each) calculi in his urine after the occurrence of hematuria, following which pain decreased in intensity. No history of fever was present. Conclusions Although a simple ectopic kidney seldom causes symptoms, the association of malrotation of the renal pelvis with calculus increases the risk of hematuria and/or hydronephrosis, presenting with colicky pain as in the present case. The clinician should be aware of these in such a case. If asymptomatic, no treatment is required. However, the patient should be advised to have follow-up ultrasounds at regular intervals to detect complications like calculus, hydronephrosis, etc. With appropriate testing and treatment, if required, an ectopic kidney should not cause serious long-term health complications. PMID:26413178

  3. A numerical study of interactions between surface forcing and sea breeze circulations and their effects on stagnation in the greater Houston area

    NASA Astrophysics Data System (ADS)

    Chen, Fei; Miao, Shiguang; Tewari, Mukul; Bao, Jian-Wen; Kusaka, Hiroyuki

    2011-06-01

    High-resolution simulations from the Advanced Research Weather Research and Forecasting (ARW-WRF) model, coupled to an urban canopy model (UCM), are used to investigate impacts of soil moisture, sea surface temperature (SST), and city of Houston itself on the development of a stagnant wind event in the Houston-Galveston (HG) area on 30 August 2000. Surface and wind profiler observations are used to evaluate the performance of WRF-UCM. The model captures the observed nocturnal urban-heat-island intensity, diurnal rotation of surface winds, and the timing and vertical extent of sea breeze and its reversal in the boundary layer remarkably well. Using hourly SST slightly improves the WRF simulation of offshore wind and temperature. Model sensitivity tests demonstrate a delicate balance between the strength of sea breeze and prevailing offshore weak flow in determining the duration of the afternoon-evening stagnation in HG. When the morning offshore flow is weak (3-5 m s-1), variations (1°-3°C) in surface temperature caused by environmental conditions substantially modify the wind fields over HG. The existence of the city itself seems to favor stagnation. Extremely dry soils increase daytime surface temperature by about 2°C, produced more vigorous boundary layer and faster moving sea breeze, favoring stagnation during late afternoon. The simulation with dry soils produces a 3 h shorter duration stagnation in the afternoon and 4 h longer duration in the evening, which may lead to more severe nighttime air pollution. Hourly variations of SST in shallow water in the Galveston Bay substantially affect the low-level wind speed in HG.

  4. Interannual Variation of the Summer Rainfall in the Taipei Basin Caused by the Impact of ENSO on the Land-Sea Breeze Activity

    NASA Astrophysics Data System (ADS)

    Chen, Tsing-Chang; Tsay, Jenq-Dar; Takle, Eugene S.

    2015-04-01

    The Taipei Basin, located in northern Taiwan, is formed by the intersection of the Tanshui River Valley (~30km) and the Keelung River Valley (~60km). Summer is the dry season in northern Taiwan, but the maximum rainfall in the Taipei Basin occurs during the summer. The majority of summer rainfall (75%) in this Basin is produced by afternoon thunderstorms triggered by the sea breeze interactions with the mountains to the south of this Basin. Environmental conditions for the roughly three million people living in the Taipei Basin are greatly affected by the land-sea breeze and afternoon thunderstorm activities. Thus, the water supply, air-land traffic, and pollution for this extremely urbanized basin can be profoundly affected by interannual variations of thunderstorm days and rainfall. A systematic analysis was made of thunderstorm days and rainfall for the past two decades. Opposite the interannual variation of the sea surface temperature (SST) anomalies over the NOAA NINO3 - 4 region, ΔSST (NINO3 - 4), clear interannual variations of these two variables emerge. Occurrence days of afternoon thunderstorm and rainfall amount in the Taipei Basin are double during the cold ΔSST(NINO3 - 4) phase compared to the warm phase. During the latter (former) El Niño-Southern Oscillation (ENSO) phase, the Taipei Basin needs a stronger (weaker) warm/moist monsoon southwesterly flow channeled through the land-sea breeze to trigger thunderstorm activity. In contrast, the convergence of water vapor flux over the southeast/east Asian monsoon region toward Taiwan is enhanced more (less) to maintain rainfall over the Taipei Basin during the cold (warm) ENSO phase.

  5. Mesoscale Simulations of a Florida Sea Breeze Using the PLACE Land Surface Model Coupled to a 1.5-Order Turbulence Parameterization

    NASA Technical Reports Server (NTRS)

    Lynn, Barry H.; Stauffer, David R.; Wetzel, Peter J.; Tao, Wei-Kuo; Perlin, Natal; Baker, R. David; Munoz, Ricardo; Boone, Aaron; Jia, Yiqin

    1999-01-01

    A sophisticated land-surface model, PLACE, the Parameterization for Land Atmospheric Convective Exchange, has been coupled to a 1.5-order turbulent kinetic energy (TKE) turbulence sub-model. Both have been incorporated into the Penn State/National Center for Atmospheric Research (PSU/NCAR) mesoscale model MM5. Such model improvements should have their greatest effect in conditions where surface contrasts dominate over dynamic processes, such as the simulation of warm-season, convective events. A validation study used the newly coupled model, MM5 TKE-PLACE, to simulate the evolution of Florida sea-breeze moist convection during the Convection and Precipitation Electrification Experiment (CaPE). Overall, eight simulations tested the sensitivity of the MM5 model to combinations of the new and default model physics, and initialization of soil moisture and temperature. The TKE-PLACE model produced more realistic surface sensible heat flux, lower biases for surface variables, more realistic rainfall, and cloud cover than the default model. Of the 8 simulations with different factors (i.e., model physics or initialization), TKE-PLACE compared very well when each simulation was ranked in terms of biases of the surface variables and rainfall, and percent and root mean square of cloud cover. A factor separation analysis showed that a successful simulation required the inclusion of a multi-layered, land surface soil vegetation model, realistic initial soil moisture, and higher order closure of the planetary boundary layer (PBL). These were needed to realistically model the effect of individual, joint, and synergistic contributions from the land surface and PBL on the CAPE sea-breeze, Lake Okeechobee lake breeze, and moist convection.

  6. Spatial and Temporal Changes in Air Pollution Along the Gulf Coast Observed During BRACE: A Case Study of the Land-Sea Breeze

    NASA Astrophysics Data System (ADS)

    Wellman, D.; Luke, W.; Arnold, J.; Watson, T.; Gunter, L.

    2003-12-01

    NOAA's Air Resources Laboratory conducted airborne measurements of trace gases and aerosols in the Bay Region Atmospheric Chemistry Experiment (BRACE) using the NOAA Twin Otter. The Twin Otter flew more than 90 hours in 21 flights in and around the Tampa metropolitan region in May, 2002, at altitudes of 60-3000 m MSL. Flights were conducted over rural and suburban areas, over the centers of Tampa and St. Petersburg, and over Tampa Bay and the Gulf of Mexico. One objective of the aircraft flights was to investigate the role of the sea breeze circulation in determining patterns of nutrient deposition and pollutant loads in the Tampa Bay watershed. Results will be presented from a May 8 flight designed to investigate the effect of the sea breeze recirculation upon Tampa's air quality. The Twin Otter took off at 1425 UTC and after performing a spiral ascent over the Sydney ground site, proceeded to fly north, at 200 feet above mean sea level (MSL) just off the Gulf coast, west of St. Petersburg. Back trajectory analysis suggested the dominance of a northerly rotation in the sea breeze; thus, air sampled over the Gulf passed some hours earlier to the south of the Tampa metropolitan area, in an area largely devoid of major pollution sources, before being advected eastward in the afternoon return flow. Ozone levels in this air mass ranged from 40 to 50 ppbv. Farther north the Twin Otter encountered the advected urban plume from Tampa, displaced to the north by the combination of southeasterly sea breeze flow and westerly return flow, and tracked this plume inland. Ozone levels quickly jumped to 60 ppbv, and increased to as high as 90 ppbv as photochemical processing continued in the advected plume. Nitric acid levels, which approached 4 ppbv in the aged urban air at the coast, dropped rapidly to as low as 1 ppbv inland. A final flight leg to the east of downtown Tampa encountered fresh anthropogenic pollution from the afternoon rush hour; ozone was rapidly produced in the brief transit time from emission to sampling by the aircraft. Analysis of the data will focus on the efficiency and rate of photochemical ozone production in the clean air, aged polluted airmass, and fresh pollution, and on the attendant extent of NOX oxidation and NOY loss.

  7. A scale model wind tunnel study of dispersion in the Cleveland area. Laboratory simulation of lake breeze effects on diffusion from ground level emissions

    NASA Technical Reports Server (NTRS)

    Hoydysh, W. G.

    1974-01-01

    A wind tunnel simulation of the diffusion patterns in a sea breeze was attempted. The results indicate that the low level onshore flow was well simulated for neutral, stable, unstable, and elevated inversion conditions. Velocity, turbulence, shear stress, and temperature data were taken, and the spread of emissions from ground level sources was investigated. Comparison is made with theoretical predictions by E. Inoue and with the open, homogeneous plane field results of Pasquill. Agreement with the predictions by Inoue is good, and the comparison with Pasquill's results shows that the wind tunnel flows are shifted two categories towards more stable. The discrepancy may be explained as a matter of averaging time.

  8. Horseshoe kidney transplantation

    PubMed Central

    Kanyári, Zsolt; Zádori, Gergely; Zsom, Lajos; Berhés, Mariann; Hamar, Mátyás; Kóbor, Krisztina; Péter, Antal

    2015-01-01

    Horseshoe kidney is a fusion anomaly found in approximately one in 400–600 people. Due to vascular and ureteral variations, transplantation with a horseshoe kidney presents a technical challenge. In our case, the isthmus connected the upper poles and contained parenchyma. It consisted of three renal arteries, five veins collected to the inferior vena cava, and two ureters and pyelons. It was implanted en bloc to the left side retroperitoneally. During the early period, cellular and humoral rejection was confirmed and treated. For a urine leak, double J catheters were implanted into both ureters. Later, the first catheter was removed. Subsequently, urinary sepsis developed, necessitating graftectomy. The uncommon anatomy of ureters and antibody-mediated rejection (AMR) may both be factors for a ureter tip necrosis led to an infected urinoma. After other Hungarian authors, we also report a horseshoe kidney transplantation that was technically successful. However, after an adequately treated but severe acute humoral rejection, the patient developed sepsis, and the kidney had to be removed. We conclude that transplantation with horseshoe kidney is technically feasible but may increase the risk for urinary complications and resultant infections. Careful consideration of risk and benefit is advised when a transplant professional is faced with this option. PMID:26120481

  9. Horseshoe kidney transplantation.

    PubMed

    Nemes, Balázs; Kanyári, Zsolt; Zádori, Gergely; Zsom, Lajos; Berhés, Mariann; Hamar, Mátyás; Kóbor, Krisztina; Péter, Antal

    2015-06-01

    Horseshoe kidney is a fusion anomaly found in approximately one in 400-600 people. Due to vascular and ureteral variations, transplantation with a horseshoe kidney presents a technical challenge. In our case, the isthmus connected the upper poles and contained parenchyma. It consisted of three renal arteries, five veins collected to the inferior vena cava, and two ureters and pyelons. It was implanted en bloc to the left side retroperitoneally. During the early period, cellular and humoral rejection was confirmed and treated. For a urine leak, double J catheters were implanted into both ureters. Later, the first catheter was removed. Subsequently, urinary sepsis developed, necessitating graftectomy. The uncommon anatomy of ureters and antibody-mediated rejection (AMR) may both be factors for a ureter tip necrosis led to an infected urinoma. After other Hungarian authors, we also report a horseshoe kidney transplantation that was technically successful. However, after an adequately treated but severe acute humoral rejection, the patient developed sepsis, and the kidney had to be removed. We conclude that transplantation with horseshoe kidney is technically feasible but may increase the risk for urinary complications and resultant infections. Careful consideration of risk and benefit is advised when a transplant professional is faced with this option. PMID:26120481

  10. Brain–kidney crosstalk

    PubMed Central

    2014-01-01

    Encephalopathy and altered higher mental functions are common clinical complications of acute kidney injury. Although sepsis is a major triggering factor, acute kidney injury predisposes to confusion by causing generalised inflammation, leading to increased permeability of the blood–brain barrier, exacerbated by hyperosmolarity and metabolic acidosis due to the retention of products of nitrogen metabolism potentially resulting in increased brain water content. Downregulation of cell membrane transporters predisposes to alterations in neurotransmitter secretion and uptake, coupled with drug accumulation increasing the risk of encephalopathy. On the other hand, acute brain injury can induce a variety of changes in renal function ranging from altered function and electrolyte imbalances to inflammatory changes in brain death kidney donors. PMID:25043644

  11. Modelling the chemistry and transport of bromoform within a sea breeze driven convective system during the SHIVA Campaign

    NASA Astrophysics Data System (ADS)

    Hamer, P. D.; Marécal, V.; Hossaini, R.; Pirre, M.; Warwick, N.; Chipperfield, M.; Samah, A. A.; Harris, N.; Robinson, A.; Quack, B.; Engel, A.; Krüger, K.; Atlas, E.; Subramaniam, K.; Oram, D.; Leedham, E.; Mills, G.; Pfeilsticker, K.; Sala, S.; Keber, T.; Bönisch, H.; Peng, L. K.; Nadzir, M. S. M.; Lim, P. T.; Mujahid, A.; Anton, A.; Schlager, H.; Catoire, V.; Krysztofiak, G.; Fühlbrügge, S.; Dorf, M.; Sturges, W. T.

    2013-08-01

    We carry out a case study of the transport and chemistry of bromoform and its product gases (PGs) in a sea breeze driven convective episode on 19 November 2011 along the North West coast of Borneo during the "Stratospheric ozone: Halogen Impacts in a Varying Atmosphere" (SHIVA) campaign. We use ground based, ship, aircraft and balloon sonde observations made during the campaign, and a 3-D regional online transport and chemistry model capable of resolving clouds and convection explicitly that includes detailed bromine chemistry. The model simulates the temperature, wind speed, wind direction fairly well for the most part, and adequately captures the convection location, timing, and intensity. The simulated transport of bromoform from the boundary layer up to 12 km compares well to aircraft observations to support our conclusions. The model makes several predictions regarding bromine transport from the boundary layer to the level of convective detrainment (11 to 12 km). First, the majority of bromine undergoes this transport as bromoform. Second, insoluble organic bromine carbonyl species are transported to between 11 and 12 km, but only form a small proportion of the transported bromine. Third, soluble bromine species, which include bromine organic peroxides, hydrobromic acid (HBr), and hypobromous acid (HOBr), are washed out efficiently within the core of the convective column. Fourth, insoluble inorganic bromine species (principally Br2) are not washed out of the convective column, but are also not transported to the altitude of detrainment in large quantities. We expect that Br2 will make a larger relative contribution to the total vertical transport of bromine atoms in scenarios with higher CHBr3 mixing ratios in the boundary layer, which have been observed in other regions. Finally, given the highly detailed description of the chemistry, transport and washout of bromine compounds within our simulations, we make a series of recommendations about the physical and chemical processes that should be represented in 3-D chemical transport models (CTMs) and chemistry climate models (CCMs), which are the primary theoretical means of estimating the contribution made by CHBr3 and other very short-lived substances (VSLS) to the stratospheric bromine budget.

  12. The impact of anthropogenic land-cover change on the Florida Peninsula Sea Breezes and warm season sensible weather

    USGS Publications Warehouse

    Marshall, C.H.; Pielke, R.A., Sr.; Steyaert, L.T.; Willard, D.A.

    2004-01-01

    During the twentieth century, the natural landscape of the Florida peninsula was transformed extensively by agriculture, urbanization, and the diversion of surface water features. The purpose of this paper is to present a numerical modeling study in which the possible impacts of this transformation on the warm season climate of the region were investigated. For three separate July-August periods (1973, 1989, and 1994), a pair of simulations was performed with the Regional Atmospheric Modeling System. Within each pair, the simulations differed only in the specification of land-cover class. The two different classes were specified using highly detailed datasets that were constructed to represent pre-1900 natural land cover and 1993 land-use patterns, thus capturing the landscape transformation within each pair of simulations. When the pre-1900 natural cover was replaced with the 1993 land-use dataset, the simulated spatial patterns of the surface sensible and latent heat flux were altered significantly, resulting in changes in the structure and strength of climatologically persistent, surface-forced mesoscale circulations-particularly the afternoon sea-breeze fronts. This mechanism was associated with marked changes in the spatial distribution of convective rainfall totals over the peninsula. When averaged over the model domain, this redistribution was reflected as an overall decrease in the 2-month precipitation total. In addition, the domain average of the diurnal cycle of 2-m temperature was amplified, with a noted increase in the daytime maximum. These results were consistent among all three simulated periods, and largely unchanged when subjected to a number of model sensitivity factors. Furthermore, the model results are in reasonable agreement with an analysis of observational data that indicates decreasing regional precipitation and increasing daytime maximum temperature during the twentieth century. These results could have important implications for water resource and land-use management issues in south Florida, including efforts to restore and preserve the natural hydroclimate of the Everglades ecosystem. This study also provides more evidence for the need to consider anthropogenic land-cover change when evaluating climate trends. ?? 2004 American Meteorological Society.

  13. Experience preferred: insights from our newest public health professionals on how internships/practicums promote career development.

    PubMed

    Hernandez, Kristen E; Bejarano, Sandra; Reyes, Francis J; Chavez, Margarita; Mata, Holly

    2014-01-01

    Universities offering undergraduate degrees in health promotion or health education and/or graduate degrees in public health typically require an internship, practicum, or fieldwork experience. This type of mentored experience is an important aspect of career development for the next generation of public health professionals and benefits not only the students but also the profession and the communities in which they work. This article provides perspectives from four public health professionals who have recently graduated from designated minority-serving institutions and highlights the ways in which internship, practicum, or fieldwork experiences have contributed to their career development. From a career development perspective, internships provide unique opportunities to develop professional networks, practice competencies learned in the classroom, gain experience in different environments, and share lessons learned with others in our field. The diversification of the public health research and practice workforce is increasingly recognized as crucial in building health equity. Internship programs that focus specifically on the academic and professional development of students underrepresented in public health provide experiences that meet or supplement academic requirements, and provide students with real-world experience and an expanded network of mentors and role models. PMID:24149216

  14. Towards Collaborative Professional Learning in the First Year Early Childhood Teacher Education Practicum: Issues in Negotiating the Multiple Interests of Stakeholder Feedback

    ERIC Educational Resources Information Center

    Brown, Alice; Danaher, Patrick

    2008-01-01

    This paper analyses data from two sources of stakeholder feedback--first year pre-service teachers and supervising teachers/centre directors--about the issues involved in creating more collaborative approaches to the first year early childhood teacher education practicum at an Australian regional university. The collection of this feedback was…

  15. Development of a Mobility Training Program for Young Adult Trainable Mentally Handicapped Clients at the Ray Graham Training Center. Maxi II Practicum Report.

    ERIC Educational Resources Information Center

    Jordan, Ellen M.

    Provided is a practicum report on a travel training program initiated at the Ray Graham Training Center (Chicago, Illinois) for 40 trainable mentally handicapped young adults. The center is described in terms of the geographic area and clients served, staff roles, parent role, and curriculum. It is noted that a prime impetus for the development of…

  16. Kidney Failure and Vascular Disease

    MedlinePlus

    ... with renal failure can be treated with an artificial kidney machine (dialysis) which removes toxins from the blood. Patients requiring ongoing dialysis use the artificial kidney machine up to three times a week ...

  17. At Risk for Kidney Disease?

    MedlinePlus

    ... Albumin Children and Kidney Disease Additional Kidney Information Contact Us Health Information Center Phone: 1-800-860- ... to share this content freely. March 5, 2014​ Contact Us Health Information Center Phone: 1-800-860- ...

  18. Kidney Stone Treatment with Lithotripsy

    MedlinePlus Videos and Cool Tools

    Kidney Stone Treatment with Lithotripsy Broward Health Medical Center Fort Lauderdale, FL November 11, 2011 I'm ... got at least three stones in his left kidney. He's been having pain and blood in his ...

  19. Kidney Failure: What to Expect

    MedlinePlus

    ... have leg cramps. These problems are caused by waste products that build up in the blood, a condition known as uremia. Healthy kidneys remove waste products from the blood. When the kidneys stop ...

  20. Lupus and Kidney Disease (Lupus Nephritis)

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  1. Treatment Methods for Kidney Failure: Transplantation

    MedlinePlus

    ... Life Options Rehabilitation Program National Kidney Foundation, Inc. Kidney and Urologic Disease Organizations Many organizations provide support ... 345 KB)​​​​​ Alternate Language URL Treatment Methods for Kidney Failure: Kidney Transplantation Page Content On this page: ...

  2. When Your Child Needs a Kidney Transplant

    MedlinePlus

    ... About Food Allergies When Your Child Needs a Kidney Transplant KidsHealth > For Parents > When Your Child Needs ... to monitor their new kidney function. About the Kidneys Kidneys are bean-shaped organs located near the ...

  3. Vitamins and Minerals in Kidney Disease

    MedlinePlus

    ... Rate Your Risk Quiz Featured Story African Americans & Kidney Disease Did you know that African Americans are ... checks Your Kidneys and You Meetings Featured Story Kidney Walk The Kidney Walk is the nation's largest ...

  4. Kidney Disease Risks among African-Americans

    MedlinePlus

    ... an AKF screening Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... our Northeast Region. Kidney Action Day Kidney Action Day Our late spring event is an elegant fundraiser ...

  5. You, Your Blood Pressure, and Your Kidneys

    MedlinePlus

    ... an AKF screening Kidney Action Day Kidney Action Day Learn about our signature outreach event. About AKF ... our Northeast Region. Kidney Action Day Kidney Action Day Our late spring event is an elegant fundraiser ...

  6. Monitoring Your Kidney Health

    MedlinePlus

    ... Dialysis or Transplant Paying for Kidney Failure Treatment Contact Us Health Information Center Phone: 1-800-860- ... to share this content freely. ​​September 17, 2014​​ Contact Us Health Information Center Phone: 1-800-860- ...

  7. HIV and Kidney Disease

    MedlinePlus

    ... most important waste products are excess sodium and water. . Each kidney contains about a million filtering units called nephrons. They: eliminate wastes from the body, regulate the volume and pressure of blood, and control levels of electrolytes and blood acidity. HOW DO I ...

  8. Hypomagnesaemia in kidney transplantation.

    PubMed

    Van Laecke, Steven; Van Biesen, Wim

    2015-07-01

    In the era of calcineurin inhibitors, hypomagnesaemia is a very common finding in kidney transplant recipients. Especially the first weeks after transplantation it is the rule rather than the exception. Hypomagnesaemia or low magnesium intake have been associated with a higher mortality or more cardiovascular events in the general population, but this association has never been explored in kidney transplant recipients, despite their increased cardiovascular risk. Kidney transplant recipients with pre- or post-transplant hypomagnesaemia seem to have an aberrant glucose metabolism and develop diabetes mellitus more frequently. Moreover, observations from alternate study populations, animal experiments or in vitro studies suggest a possible role of magnesium deficiency in graft dysfunction, bone metabolism and transplant immunology. Future observational and especially interventional studies should further define whether and to what extent we should make effort to correct this electrolyte disturbance in transplant recipients. Considering the mechanism of renal magnesium wasting, normalizing the serum magnesium concentration by oral supplementation alone might turn out to be cumbersome in kidney transplant recipients. PMID:26001746

  9. Kidney Stones in Adults

    MedlinePlus

    ... specific type of kidney stone include the following: Calcium Oxalate Stones reducing sodium reducing animal protein, such as ... fish getting enough calcium from food or taking calcium supplements with food avoiding foods high in oxalate, such as spinach, rhubarb, nuts, and wheat bran ...

  10. Anemia in Chronic Kidney Disease

    MedlinePlus

    ... Kidney Foundation U.S. Food and Drug Administration MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... 345 KB)​​​​​ Alternate Language URL Anemia in Chronic Kidney Disease Page Content On this page: What is ...

  11. Kidneys and How They Work

    MedlinePlus

    ... Options National Kidney Foundation The NephCure Foundation MedlinePlus Kidney and Urologic Disease Organizations Many organizations provide support ... PDF, 345 KB) Alternate Language URL Español The Kidneys and How They Work Page Content On this ...

  12. Kidney Size Comparison of BEN Victims

    Normal size kidney (left) and a Balkan endemic nephropathy (BEN) kidney (right). The BEN kidney is reduced by one third compared to a normal kidney. The collapse of the kidney structure in the BEN kidney causes the organ to cease to function, resulting in uremia (blood poisoning) and requiring dialy...

  13. Hypertension and a missing kidney

    PubMed Central

    Raina, Rupesh; Gulani, Vikas; Mehta, Lina; Jacobs, Gretta H.; Joyce, Kelly; Ponsky, Todd A.; Kenagy, David N.

    2012-01-01

    Standard initial assessment via ultrasound of a 4-year-old girl with hypertension revealed the absence of one kidney. Instead of cross-sectional imaging of the retroperitoneal space, a functional (nuclear) study was performed. This revealed a malformed kidney within the chest. Though systemic levels of renin and aldosterone were not elevated, removal of the malformed kidney normalized the blood pressure. The presence of prominent smooth muscle nodules surrounding the arteries was seen in the malformed kidney. Initial attempts to avert surgery by pharmacologically reducing blood flow to the malformed kidney were unsuccessful. The review of the literature offers little evidence to support such a strategy. PMID:25874090

  14. Kidney diseases and tissue engineering.

    PubMed

    Moon, Kyung Hyun; Ko, In Kap; Yoo, James J; Atala, Anthony

    2016-04-15

    Kidney disease is a worldwide public health problem. Renal failure follows several disease stages including acute and chronic kidney symptoms. Acute kidney injury (AKI) may lead to chronic kidney disease (CKD), which can progress to end-stage renal disease (ESRD) with a mortality rate. Current treatment options are limited to dialysis and kidney transplantation; however, problems such as donor organ shortage, graft failure and numerous complications remain a concern. To address this issue, cell-based approaches using tissue engineering (TE) and regenerative medicine (RM) may provide attractive approaches to replace the damaged kidney cells with functional renal specific cells, leading to restoration of normal kidney functions. While development of renal tissue engineering is in a steady state due to the complex composition and highly regulated functionality of the kidney, cell therapy using stem cells and primary kidney cells has demonstrated promising therapeutic outcomes in terms of restoration of renal functions in AKI and CKD. In this review, basic components needed for successful renal kidney engineering are discussed, and recent TE and RM approaches to treatment of specific kidney diseases will be presented. PMID:26134528

  15. Anorexia nervosa and the kidney.

    PubMed

    Bouquegneau, Antoine; Dubois, Bernard E; Krzesinski, Jean-Marie; Delanaye, Pierre

    2012-08-01

    Anorexia nervosa is a common psychiatric disorder that disproportionately affects adolescents and young adults and is associated with high rates of morbidity and mortality. Anorexia nervosa can affect the kidney in numerous ways, including increased rates of acute kidney injury and chronic kidney disease, electrolyte abnormalities, and nephrolithiasis. Additionally, the diagnosis and treatment of anorexia nervosa-associated kidney diseases are challenging, reflecting complications such as refeeding syndrome, as well as the limitations of serum creatinine level in this population to estimate kidney function and the psychosocial challenges inherent with treating systemic manifestations of psychiatric conditions. In this review, we discuss kidney diseases and kidney-associated conditions that occur in individuals with anorexia nervosa, summarizing many of the challenges in treating patients with this disease. PMID:22609034

  16. Acute kidney injury.

    PubMed

    Connell, Alistair; Laing, Chris

    2015-12-01

    Acute kidney injury (AKI) - an abrupt deterioration in renal function - causes a rise in serum creatinine (SCr) or fall in urine output. It is common, occurring in up to 20% of hospital admissions. Importantly, even small rises in SCr are associated with increased risk of death and longer hospital stays. A 2009 National Confidential Enquiry into Patient Outcome and Death report found that a proportion of AKI in secondary care was avoidable. In addition, management of established AKI was 'good' less than half the time. In practice, AKI represents a heterogeneous group of conditions, encompassing impairments in both kidney structure and function. Delivering disease-specific treatment early in the course of AKI may improve outcomes. The provision of best-practice care for all will rely on a better understanding of risk, and frameworks of care that can be applied across a diverse patient group. PMID:26621953

  17. The kidney research predicament.

    PubMed

    Bryan, Lisa; Ibrahim, Tod; Zent, Roy; Fischer, Michael J

    2014-05-01

    Research funding from public and private sources has reached an all-time low. Economic conditions, sequestration, and a trend of low award success rates have created an imbalance between the supply of highly qualified research investigators and the availability of critically necessary research dollars. This grim environment continues to hinder the success of established investigators and deter potential investigators from joining the research workforce. Without action and support of innovative science, the future of the US health care system is in jeopardy, and its leadership role in medical research will decrease. This work discusses the effects of the decline in research funding, the plight of kidney research, and the impact of the American Society of Nephrology Grants Program on scientists. The ASN also calls on the entire nephrology community to rejuvenate the research environment, improve the lives of millions of people with kidney disease, and ultimately, find a cure. PMID:24652790

  18. The Kidney Research Predicament

    PubMed Central

    Bryan, Lisa; Ibrahim, Tod; Fischer, Michael J.

    2014-01-01

    Research funding from public and private sources has reached an all-time low. Economic conditions, sequestration, and a trend of low award success rates have created an imbalance between the supply of highly qualified research investigators and the availability of critically necessary research dollars. This grim environment continues to hinder the success of established investigators and deter potential investigators from joining the research workforce. Without action and support of innovative science, the future of the US health care system is in jeopardy, and its leadership role in medical research will decrease. This work discusses the effects of the decline in research funding, the plight of kidney research, and the impact of the American Society of Nephrology Grants Program on scientists. The ASN also calls on the entire nephrology community to rejuvenate the research environment, improve the lives of millions of people with kidney disease, and ultimately, find a cure. PMID:24652790

  19. Kidney Cell Electrophoresis

    NASA Technical Reports Server (NTRS)

    Todd, P.

    1985-01-01

    Materials and procedures for microgravity electrophoresis of living human embryonic kidney cells were evaluated, ground support in the form of analytical cell electrophoresis and flow cytometry was provided and cells returned from space flight were analyzed. Preflight culture media, electrophoresis buffer, fraction collection media, temperature profiles, and urokinase assay procedures were tested prior to flight. Electrophoretic mobility distributions of aliquots of the cell population to be fractionated in flight were obtained. The protocol established and utilized is given.

  20. Claudins and the Kidney

    PubMed Central

    2015-01-01

    Claudins are tight-junction membrane proteins that function as both pores and barriers in the paracellular pathway in epithelial cells. In the kidney, claudins determine the permeability and selectivity of different nephron segments along the renal tubule. In the proximal tubule, claudins have a role in the bulk reabsorption of salt and water. In the thick ascending limb, claudins are important for the reabsorption of calcium and magnesium and are tightly regulated by the calcium-sensing receptor. In the distal nephron, claudins need to form cation barriers and chloride pores to facilitate electrogenic sodium reabsorption and potassium and acid secretion. Aldosterone and the with-no-lysine (WNK) proteins likely regulate claudins to fine-tune distal nephron salt transport. Genetic mutations in claudin-16 and -19 cause familial hypomagnesemic hypercalciuria with nephrocalcinosis, whereas polymorphisms in claudin-14 are associated with kidney stone risk. It is likely that additional roles for claudins in the pathogenesis of other types of kidney diseases have yet to be uncovered. PMID:24948743

  1. Acute kidney injury

    PubMed Central

    Müller, Gerhard Anton

    2015-01-01

    Abstract: Acute kidney injury is a frequent and serious complication in hospitalized patients. Mortality rates have not substantially been decreased during the last 20 years. In most patients AKI results from transient renal hypoperfusion or ischemia. The consequences include tubular cell dysfunction/damage, inflammation of the organ, and post-ischemic microvasculopathy. The two latter events perpetuate kidney damage in AKI. Clinical manifestations result from diminished excretion of water, electrolytes, and endogenous / exogenous waste products. Patients are endangered by cardiovascular complications such as hypertension, heart failure, and arrhythmia. In addition, the whole organism may be affected by systemic toxification (uremia). The diagnostic approach in AKI involves several steps with renal biopsy inevitable in some patients. The current therapy focuses on preventing further kidney damage and on treatment of complications. Different pharmacological strategies have failed to significantly improve prognosis in AKI. If dialysis treatment becomes mandatory, intermittent and continuous renal replacement therapies are equally effective. Thus, new therapies are urgently needed in order to reduce short- and long-term outcome in AKI. In this respect, stem cell-based regimens may offer promising perspectives. PMID:25618438

  2. Students' Satisfaction with an Undergraduate Primary Education Teaching Practicum Design on Developing Technological, Pedagogical and Mathematical Knowledge

    NASA Astrophysics Data System (ADS)

    Doukakis, Spyros; Koilias, Christos; Chionidou-Moskofoglou, Maria

    During the 2008-2009 spring semester, 25 fourth-year undergraduate primary teachers attended the compulsory course "Teaching Mathematics-Practicum Phase". The course was organised so as to incorporate ICT and special mathematical scenarios in the teaching approaches of undergraduate primary teachers. This article presents course satisfaction of participants as found in the research study. A set of powerful ordinal regression methods has been applied on a survey database. The most important results focus on the determination of the course's weak and strong points, according to the MUSA methodology. The results show a high satisfaction level from the course. The global satisfaction level reaches 98% whereas partial (per criterion) satisfaction levels range from 90% to 97%, the lowest rate corresponding to the theoretical component of the course. The findings raise a number of research questions regarding ICT integration in undergraduate primary teachers' teaching practice.

  3. [Kidney transplantation in children].

    PubMed

    Coppo, R; Amore, A; Peruzzi, L; Conti, G; Roasio, L; Amoroso, A

    2005-01-01

    Indications, procedures, complications, pharmacokinetics and outcomes of renal transplantation are different in children and in adults. Subjects <18 yrs old, are often included in a unique list as in Italy, benefiting from donors <15 yrs old, and the waiting time is reduced to <12 months in 71% of cases. The risk of thrombosis limits the use of donors <2 yrs and trans-plantation in infants <1 yr. The age at kidney transplantation is <5 yrs in 20-30% of children. In Italy living-related trans-plantation (LRT) is performed in 7% of cases, while in the USA it is more common (57%) and is often pre-emptive before entering dialysis (24%). Current therapy tends to reduce steroid treatment doses and, optimizing induction therapy with IL-2R inhibitors, using tacrolimus or mycophenolate or sirolimus. Transplanted patient survival is better in children than in adults (94-98% at 5 yrs). Infections, cardiovascular diseases and neoplasia induce 34, 15 and 12% of deaths, respectively, at 10 yrs; morbidity for infections and lymphoproliferative disease is increasing. Acute rejections declined from 70% in 1987 to 31% in 2002 in cadaveric transplantation (CT) and renal survival at 3 yrs increased from 50% in 1985 to 82% for CT and up to 92% in LRT. In adolescents (11-17 yrs old) renal survival is lower than in infants and in adults <65 yrs old. Renal losses are due to chronic transplant nephropathy (32%), vascular thrombosis (13%) and the recurrence of the original nephropathy (focal glomerulosclerosis up to 50%, membrano-proliferative glomerulonephritis up to 30%, and primary hyperoxaluria up to 90% if combined kidney-liver transplantation is not performed). Growth improves after transplantation particularly in children <5 yrs, while it is not completely satisfactory in adolescents. Overall, results indicate that kidney transplantation in children has very much improved and will offer in the near future even more favorable outcomes. PMID:16267794

  4. CD74 in Kidney Disease

    PubMed Central

    Valiño-Rivas, Lara; Baeza-Bermejillo, Ciro; Gonzalez-Lafuente, Laura; Sanz, Ana Belen; Ortiz, Alberto; Sanchez-Niño, Maria Dolores

    2015-01-01

    CD74 (invariant MHC class II) regulates protein trafficking and is a receptor for macrophage migration inhibitory factor (MIF) and d-dopachrome tautomerase (d-DT/MIF-2). CD74 expression is increased in tubular cells and/or glomerular podocytes and parietal cells in human metabolic nephropathies, polycystic kidney disease, graft rejection and kidney cancer and in experimental diabetic nephropathy and glomerulonephritis. Stressors like abnormal metabolite (glucose, lyso-Gb3) levels and inflammatory cytokines increase kidney cell CD74. MIF activates CD74 to increase inflammatory cytokines in podocytes and tubular cells and proliferation in glomerular parietal epithelial cells and cyst cells. MIF overexpression promotes while MIF targeting protects from experimental glomerular injury and kidney cysts, and interference with MIF/CD74 signaling or CD74 deficiency protected from crescentic glomerulonephritis. However, CD74 may protect from interstitial kidney fibrosis. Furthermore, CD74 expression by stressed kidney cells raises questions about the kidney safety of cancer therapy strategies delivering lethal immunoconjugates to CD74-expressing cells. Thus, understanding CD74 biology in kidney cells is relevant for kidney therapeutics. PMID:26441987

  5. [Infertility and kidney transplantation].

    PubMed

    Atallah, David; Salameh, Charbel; El Kassis, Nadine; Safi, Joelle; Lutfallah, Fouad; Bejjani, Lina; Ghaname, Wadih; Moukarzel, Maroun

    2015-01-01

    Renal failure impairs the endocrine system, especially in women, due to hyperprolactinemia, altering fertility, ovulatory cycles, libido and growth in adolescents. Renal transplantation is considered the best solution to the problems of renal failure and and of dialysis, as evidenced by comparing the rate of hyperprolactinemia (100% in chronic renal failure, 60% in patients on dialysis and 35% in post-transplantation). Kidney transplant is less efficient for restoring perfect function of the hypothalamic-pituitary-gonadal axis due in part to the immunosuppressant regimens prescribed. When these drugs are properly managed, transplantation will restore near normal sexual function. PMID:26591193

  6. [Kidney toxicity's "HAART" therapy].

    PubMed

    Marino, Alfonsina; Ardu, Francesco; Dentone, Chiara; Secondo, Giovanni; Ferrea, G

    2015-01-01

    Human immunodeficiency virus (HIV) and antiretroviral therapy can damage the kidney. Highly active antiretroviral therapy (HAART) generally improves the renal function as it reduces the viral replication, although the renal function may be reduced by certain antiretroviral drugs. HAART causes acute tubular necrosis, acute interstitial nephritis, calculi, Fanconi Syndrome, crystal nephropathy, elevated lipid levels as well as calcium and phosphorus alteration. The physician must estimate renal function before and during antiretroviral therapy, especially when HIV-infected patients have some risk factors for renal damage such as high-blood pressure or hepatitis B or C infections. PMID:26480259

  7. Inadvertent Transmission of Polycystic Kidney Disease in Kidney Transplantation

    PubMed Central

    Langote, Amit; Mazarova, Andrea; Mahoney, John; Blew, Brian; Knoll, Greg A.

    2015-01-01

    Patient: Male, 55 Final Diagnosis: Polycystic transformation of transplant kidney Symptoms: Hematuia Medication: Tacrolimus • Mycophenoalte Moefitil • Prednisone Clinical Procedure: Graft nephrectomy Specialty: Nephrology Objective: Unusual clinical course Background: Although organ donors are rigorously tested, occasionally an unidentified donor disease can be transmitted to the recipient. These conditions include malignancies, infections, and, rarely, congenital diseases. Case Report: We report a case of an inadvertent transmission of polycystic kidney disease from a 40-year-old trauma victim to both kidney recipients. There was no family history of renal disease in the donor. The renal allografts gradually increased in size with the development of cysts and functioned for 10 and 14 years. Conclusions: We report a case of inadvertent transmission of polycystic kidney disease from an unsuspecting deceased donor to both the recipients through renal allograft. Both the grafts lasted long enough to suggest that polycystic kidneys from deceased donors can be considered for transplantation. PMID:25716074

  8. Obesity and kidney protection

    PubMed Central

    Chandra, Aravind; Biersmith, Michael; Tolouian, Ramin

    2014-01-01

    Context: Obesity, both directly and indirectly, increases the risk for a variety of disease conditions including diabetes, hypertension, liver disease, and certain cancers, which in turn, decreases the overall lifespan in both men and women. Though the cardiovascular risks of obesity are widely acknowledged, less often identified is the relationship between obesity and renal function. Evidence Acquisitions: Directory of Open Access Journals (DOAJ), Google Scholar, PubMed, EBSCO and Web of Science has been searched. Results: The concept of the “Metabolic Syndrome“ helps us to understand this close link between obesity, diabetes, hypertension, and renal dysfunction. An elevated body mass index has shown to be one of the major determinants of glomerular hyperfiltration that lead to the development of chronic kidney disease. Interestingly, weight loss can lead to attenuation of hyperfiltration in severely obese patients suggesting a possible therapeutic option to combat obesity-related hyperfiltration. Conclusions: Various treatment strategies had been suggested to decrease impact of obesity on kidneys. These are blood pressure controling, inhibition of the renin-angiotensinaldosterone axis, improving glycemic control, improving dyslipidemia, improving protein uriaand lifestyle modifications. Regardless of the numerous pharmacotherapies, the focus should be on the root cause: obesity. PMID:25093156

  9. Pruritus in Kidney Disease.

    PubMed

    Combs, Sara A; Teixeira, J Pedro; Germain, Michael J

    2015-07-01

    Pruritus is a common and distressing symptom in patients with chronic kidney disease. The most recent epidemiologic data have suggested that approximately 40% of patients with end-stage renal disease experience moderate to severe pruritus and that uremic pruritus (UP) has a major clinical impact, being associated strongly with poor quality of life, impaired sleep, depression, and increased mortality. The pathogenesis of UP remains largely unclear, although several theories on etiologic or contributing factors have been proposed including increased systemic inflammation; abnormal serum parathyroid hormone, calcium, and phosphorus levels; an imbalance in opiate receptors; and a neuropathic process. UP can present somewhat variably, although it tends to affect large, discontinuous, but symmetric, areas of skin and to be most symptomatic at night. A variety of alternative systemic or dermatologic conditions should be considered, especially in patients with asymmetric pruritus or other atypical features. Treatment initially should focus on aggressive skin hydration, patient education on minimizing scratching, and optimization of the aspects of chronic kidney disease care that are most relevant to pruritus, including dialysis adequacy and serum parathyroid hormone, calcium, and phosphorus management. Data for therapy specifically for UP remain limited, although topical therapies, gabapentin, type B ultraviolet light phototherapy, acupuncture, and opioid-receptor modulators all may play a role. PMID:26355256

  10. Acute Kidney Injury.

    PubMed

    Zuk, Anna; Bonventre, Joseph V

    2016-01-14

    Acute kidney injury (AKI) is a global public health concern associated with high morbidity, mortality, and healthcare costs. Other than dialysis, no therapeutic interventions reliably improve survival, limit injury, or speed recovery. Despite recognized shortcomings of in vivo animal models, the underlying pathophysiology of AKI and its consequence, chronic kidney disease (CKD), is rich with biological targets. We review recent findings relating to the renal vasculature and cellular stress responses, primarily the intersection of the unfolded protein response, mitochondrial dysfunction, autophagy, and the innate immune response. Maladaptive repair mechanisms that persist following the acute phase promote inflammation and fibrosis in the chronic phase. Here macrophages, growth-arrested tubular epithelial cells, the endothelium, and surrounding pericytes are key players in the progression to chronic disease. Better understanding of these complex interacting pathophysiological mechanisms, their relative importance in humans, and the utility of biomarkers will lead to therapeutic strategies to prevent and treat AKI or impede progression to CKD or end-stage renal disease (ESRD). PMID:26768243

  11. Kidney Disease: Early Detection and Treatment

    MedlinePlus

    ... Bar Home Current Issue Past Issues Special Section Kidney Disease: Early Detection and Treatment Past Issues / Winter ... called a "urine albumin-to-creatinine ratio." Treating Kidney Disease Kidney disease is usually a progressive disease, ...

  12. Risk Factors for Chronic Kidney Disease

    MedlinePlus

    ... Renal. Home » Kidney Info » 1 in 9 Adults Risk Factors for CKD x What are you doing to ... to prevent or delay kidney failure. Kidney Disease Risk Factors You Can Change Diabetes Type 2 diabetes is ...

  13. Kidney Disease Statistics for the United States

    MedlinePlus

    ... also order print versions from our online catalog. Kidney Disease Statistics for the United States Page Content ... for Vascular Access Acknowledgments The Growing Burden of Kidney Disease Kidney disease statistics for the United States ...

  14. Kidney Stones in Children and Teens

    MedlinePlus

    ... Issues Listen Español Text Size Email Print Share Kidney Stones in Children and Teens Page Content Article Body ​ ... teen girls having the highest incidence. Types of Kidney Stones There are many different types of kidney stones ...

  15. Treatment Methods for Kidney Failure: Peritoneal Dialysis

    MedlinePlus

    ... Life Options Rehabilitation Program National Kidney Foundation, Inc. Kidney and Urologic Disease Organizations Many organizations provide support ... 345 KB)​​​​​ Alternate Language URL Treatment Methods for Kidney Failure: Peritoneal Dialysis Page Content On this page: ...

  16. Tubulocystic carcinoma of the kidney

    PubMed Central

    Adair, Carol F.; Zhang, Haiying

    2015-01-01

    Tubulocystic carcinoma (TCC) of the kidney is a unique, rare, and recently recognized neoplasm. Although originally considered a low-grade collecting duct carcinoma, TCC is now considered to be a distinct entity. TCC should be considered in the differential diagnosis of cystic renal neoplasms. We report a case of TCC arising in the left kidney. PMID:26130898

  17. Role of kidney biomarkers of chronic kidney disease: An update

    PubMed Central

    Khan, Zeba; Pandey, Manoj

    2014-01-01

    Chronic kidney disease (CKD) is a progressive pathological condition marked by deteriorating renal function over time. Diagnostic of kidney disease depend on serum creatinine level and glomerular filtration rate which is detectable when kidney function become half. The detection of kidney damage in an early stage needs robust biomarkers. Biomarkers allow monitoring the disease progression at initial stages of disease. On the onset of impairment in cellular organization there is perturbation in signaling molecules which are either up-regulated or down-regulated and act as an indicator or biomarker of diseased stage. This review compiled the cell signaling of different kidney biomarkers associated with the onset of chronic kidney diseases. Delay in diagnosis of CKD will cause deterioration of nephron function which leads to End stage renal disease and at that point patients require dialysis or kidney transplant. Detailed information on the complex network in signaling pathway leading to a coordinated pattern of gene expression and regulation in CKD will undoubtedly provide important clues to develop novel prognostic and therapeutic strategies for CKD. PMID:25183938

  18. [Kidney and hemoglobinopathy].

    PubMed

    Rémy, Philippe; Audard, Vincent; Galactéros, Frédéric

    2016-04-01

    Sickle-cell disease (SCD), one of the most common severe monogenic disorders into the world, is associated with an increased frequency of chronic kidney disease. SCD is caused by a point mutation in the gene encoding β globin gene which leads to the formation of hemoglobin S that polymerises after deoxygenation. HbS polymerisation is associated with erythrocyte rigidity and vaso-occlusive episodes that play a central role into SCD pathogenesis. The spectrum of renal diseases during SCD is broad and includes various renal manifestations which become more apparent with increasing age. Underlying pathophysiological processes involved in sickle cell nephropathy are multifactorial but endothelial dysfunction related to chronic hemolysis is a key factor contributing to renal involvement. Our review focuses on the pathogenesis and on the spectrum of renal manifestations occurring in SCD patients. PMID:26947986

  19. Wars, disasters and kidneys.

    PubMed

    Lameire, N

    2014-12-01

    This paper summarizes the impact that wars had on the history of nephrology, both worldwide and in the Ghent Medical Faculty notably on the definition, research and clinical aspects of acute kidney injury. The paper briefly describes the role of 'trench nephritis' as observed both during World War I and II, supporting the hypothesis that many of the clinical cases could have been due to Hantavirus nephropathy. The lessons learned from the experience with crush syndrome first observed in World War II and subsequently investigated over many decades form the basis for the creation of the Renal Disaster Relief Task Force of the International Society of Nephrology. Over the last 15 years, this Task Force has successfully intervened both in the prevention and management of crush syndrome in numerous disaster situations like major earthquakes. PMID:25409904

  20. Melioidosis and the kidney.

    PubMed

    Jabbar, Zulfikar; Currie, Bart J

    2013-03-01

    Melioidosis, caused by the saprophytic soil and freshwater Gram-negative aerobic bacillus Burkholderia pseudomallei, is classically characterized by pneumonia, sometimes with multiple organ abscesses, usually in patients with defined risk factors and with a mortality rate of up to 40%. It is a major cause of community-acquired sepsis in Southeast Asia and tropical northern Australia with an expanding global geographical distribution. It is increasingly recognized as an opportunistic infectious disease of importance to physicians, who may need to suspect it in at-risk patients that may come from or visit endemic areas, and could be fatal if treated late or inappropriately. Mortality could be prevented by early institution of specific antimicrobial therapy. Epidemiology, clinical features, overall management, and aspects of melioidosis particularly relevant to kidney disease and immunosuppression are discussed in this review. PMID:23279670

  1. Metals and kidney autoimmunity.

    PubMed Central

    Bigazzi, P E

    1999-01-01

    The causes of autoimmune responses leading to human kidney pathology remain unknown. However, environmental agents such as microorganisms and/or xenobiotics are good candidates for that role. Metals, either present in the environment or administered for therapeutic reasons, are prototypical xenobiotics that cause decreases or enhancements of immune responses. In particular, exposure to gold and mercury may result in autoimmune responses to various self-antigens as well as autoimmune disease of the kidney and other tissues. Gold compounds, currently used in the treatment of patients with progressive polyarticular rheumatoid arthritis, can cause a nephrotic syndrome. Similarly, an immune-mediated membranous nephropathy frequently occurred when drugs containing mercury were commonly used. Recent epidemiologic studies have shown that occupational exposure to mercury does not usually result in autoimmunity. However, mercury induces antinuclear antibodies, sclerodermalike disease, lichen planus, or membranous nephropathy in some individuals. Laboratory investigations have confirmed that the administration of gold or mercury to experimental animals leads to autoimmune disease quite similar to that observed in human subjects exposed to these metals. In addition, studies of inbred mice and rats have revealed that a few strains are susceptible to the autoimmune effects of gold and mercury, whereas the majority of inbred strains are resistant. These findings have emphasized the importance of genetic (immunogenetic and pharmacogenetic) factors in the induction of metal-associated autoimmunity. (italic)In vitro(/italic) and (italic)in vivo(/italic) research of autoimmune disease caused by mercury and gold has already yielded valuable information and answered a number of important questions. At the same time it has raised new issues about possible immunostimulatory or immunosuppressive mechanisms of xenobiotic activity. Thus it is evident that investigations of metal-induced renal autoimmunity have the potential to produce new knowledge with relevance to autoimmune disease caused by xenobiotics in general as well as to idiopathic autoimmunity. PMID:10502542

  2. Observations of Urban Heat Island Mitigation in California Coastal Cities due to a Sea Breeze Induced Coastal-Cooling ``REVERSE-REACTION'' to Global Warming

    NASA Astrophysics Data System (ADS)

    Bornstein, R. D.; Lebassi, B.; Gonzalez, J.

    2010-12-01

    The study evaluated long-term (1948-2005) air temperatures at over 300 urban and rural sites in California (CA) during summer (June-August, JJA). The aggregate CA results showed asymmetric warming, as daily min temperatures increased faster than daily max temperatures. The spatial distributions of daily max temperatures in the heavily urbanized South Coast and San Francisco Bay Area air basins, however, exhibited a complex pattern, with cooling at low-elevation (mainly urban) coastal-areas and warming at (mainly rural) inland areas. Previous studies have suggested that cooling summer max temperatures in CA were due to increased irrigation, coastal upwelling, or cloud cover. The current hypothesis, however, is that this temperature pattern arises from a “reverse-reaction” to greenhouse gas (GHG) induced global-warming. In this hypothesis, the global warming of inland areas resulted in an increased (cooling) sea breeze activity in coastal areas. That daytime summer coastal cooling was seen in coastal urban areas implies that urban heat island (UHI) warming was weaker than the reverse-reaction sea breeze cooling; if there was no UHI effect, then the cooling would have been even stronger. Analysis of daytime summer max temperatures at four adjacent pairs of urban and rural sites near the inland cooling-warming boundary, however, showed that the rural sites experienced cooling, while the urban sites showed warming due to UHI development. The rate of heat island growth was estimated as the sum of each urban warming rate and the absolute magnitude of the concurrent adjacent rural cooling rate. Values ranged from 0.12 to 0.55 K decade-1, and were proportional to changes in urban population and urban extent. As Sacramento, Modesto, Stockton, and San José have grown in aerial extent (21 to 59%) and population (40 to 118%), part of the observed increased JJA max values could be due to increased daytime UHI-intensity. Without UHI effects, the currently observed JJA SFBA coastal-cooling area might have expanded to include these sites, as the first three are adjacent to rural airport sites that showed cooling max-values due to increased marine influences. In addition, all urbanized sites with decreasing max-values would probably show even larger cooling rates if UHI effects could be removed. Significant societal impacts may result from this observed reverse-reaction to GHG-warming. Possible beneficial effects (especially during periods of UHI growth) include decreased maximum: O3 levels, per-capita energy requirements for cooling, and human thermal-stress levels.

  3. Kidney donation after cardiac death

    PubMed Central

    Akoh, Jacob A

    2012-01-01

    There is continuing disparity between demand for and supply of kidneys for transplantation. This review describes the current state of kidney donation after cardiac death (DCD) and provides recommendations for a way forward. The conversion rate for potential DCD donors varies from 40%-80%. Compared to controlled DCD, uncontrolled DCD is more labour intensive, has a lower conversion rate and a higher discard rate. The super-rapid laparotomy technique involving direct aortic cannulation is preferred over in situ perfusion in controlled DCD donation and is associated with lower kidney discard rates, shorter warm ischaemia times and higher graft survival rates. DCD kidneys showed a 5.73-fold increase in the incidence of delayed graft function (DGF) and a higher primary non function rate compared to donation after brain death kidneys, but the long term graft function is equivalent between the two. The cold ischaemia time is a controllable factor that significantly influences the outcome of allografts, for example, limiting it to < 12 h markedly reduces DGF. DCD kidneys from donors < 50 function like standard criteria kidneys and should be viewed as such. As the majority of DCD kidneys are from controlled donation, incorporation of uncontrolled donation will expand the donor pool. Efforts to maximise the supply of kidneys from DCD include: implementing organ recovery from emergency department setting; improving family consent rate; utilising technological developments to optimise organs either prior to recovery from donors or during storage; improving organ allocation to ensure best utility; and improving viability testing to reduce primary non function. PMID:24175245

  4. Florida Agriculture - Utilizing TRMM to Analyze Sea Breeze Thunderstorm Patterns During El Nino Southern Oscillations and Their Effects Upon Available Fresh Water for South Florida Agricultural Planning and Management

    NASA Technical Reports Server (NTRS)

    Billiot, Amanda; Lee, Lucas; McKee, Jake; Cooley, Zachary Clayton; Mitchell, Brandie

    2010-01-01

    This project utilizes Tropical Rainfall Measuring Mission (TRMM) and Landsat satellite data to assess the impact of sea breeze precipitation upon areas of agricultural land use in southern Florida. Water is a critical resource to agriculture, and the availability of water for agricultural use in Florida continues to remain a key issue. Recent projections of statewide water use by 2020 estimate that 9.3 billion gallons of water per day will be demanded, and agriculture represents 47% of this demand (Bronson 2003). Farmers have fewer options for water supplies than public users and are often limited to using available supplies from surface and ground water sources which depend in part upon variable weather patterns. Sea breeze thunderstorms are responsible for much of the rainfall delivered to Florida during the wet season (May-October) and have been recognized as an important overall contributor of rainfall in southern Florida (Almeida 2003). TRMM satellite data was used to analyze how sea breeze-induced thunderstorms during El Nino and La Nina affected interannual patterns of precipitation in southern Florida from 1998-2009. TRMM's Precipitation Radar and Microwave Imager provide data to quantify water vapor in the atmosphere, precipitation rates and intensity, and the distribution of precipitation. Rainfall accumulation data derived from TRMM and other microwave sensors were used to analyze the temporal and spatial variations of rainfall during each phase of the El Nino Southern Oscillation (ENSO). Through the use of TRMM and Landsat, slight variations were observed, but it was determined that neither sea breeze nor total rainfall patterns in South Florida were strongly affected by ENSO during the study period. However, more research is needed to characterize the influence of ENSO on summer weather patterns in South Florida. This research will provide the basis for continued observations and study with the Global Precipitation Measurement Mission.

  5. Biomarkers in chronic kidney disease, from kidney function to kidney damage

    PubMed Central

    Lopez-Giacoman, Salvador; Madero, Magdalena

    2015-01-01

    Chronic kidney disease (CKD) typically evolves over many years, with a long latent period when the disease is clinically silent and therefore diagnosis, evaluation and treatment is based mainly on biomarkers that assess kidney function. Glomerular filtration rate (GFR) remains the ideal marker of kidney function. Unfortunately measuring GFR is time consuming and therefore GFR is usually estimated from equations that take into account endogenous filtration markers like serum creatinine (SCr) and cystatin C (CysC). Other biomarkers such as albuminuria may precede kidney function decline and have demonstrated to have strong associations with disease progression and outcomes. New potential biomarkers have arisen with the promise of detecting kidney damage prior to the currently used markers. The aim of this review is to discuss the utility of the GFR estimating equations and biomarkers in CKD and the different clinical settings where these should be applied. The CKD-Epidemiology Collaboration equation performs better than the modification of diet in renal disease equation, especially at GFR above 60 mL/min per 1.73 m2. Equations combining CysC and SCr perform better than the equations using either CysC or SCr alone and are recommended in situations where CKD needs to be confirmed. Combining creatinine, CysC and urine albumin to creatinine ratio improves risk stratification for kidney disease progression and mortality. Kidney injury molecule and neutrophil gelatinase-associated lipocalin are considered reasonable biomarkers in urine and plasma to determine severity and prognosis of CKD. PMID:25664247

  6. Ultrasonography of the Kidney: A Pictorial Review

    PubMed Central

    Hansen, Kristoffer Lindskov; Nielsen, Michael Bachmann; Ewertsen, Caroline

    2015-01-01

    Ultrasonography of the kidneys is essential in the diagnosis and management of kidney-related diseases. The kidneys are easily examined, and most pathological changes in the kidneys are distinguishable with ultrasound. In this pictorial review, the most common findings in renal ultrasound are highlighted. PMID:26838799

  7. Electroporation of Embryonic Kidney Explants

    NASA Astrophysics Data System (ADS)

    Haddad, Nicholas; Houle, Daniel; Gupta, Indra R.

    Metanephric kidney development in the mouse begins at embryonic day (E) 10.5, when the ureteric bud (UB), an outgrowth of the epithelial nephric duct, invades the neighboring metanephric mesenchyme (MM). The ureteric bud then undergoes a series of branching events to form the collecting duct network of the adult kidney (Fig. 19.1). As each ureteric bud tip forms, the adjacent undifferentiated mesenchyme is induced to epithelialize and form a nephron, the functional unit of the adult kidney that filters waste. Rodent embryonic kidneys can be dissected and cultured as explants such that branching morphogenesis and nephrogenesis can be observed ex vivo (Rothenpieler and Dressler, 1993; Vega et al., 1996; Piscione et al., 1997; Gupta et al., 2003).

  8. Targeted Therapies for Kidney Cancer

    MedlinePlus

    ... to treat advanced kidney cancer. These drugs block angiogenesis (growth of the new blood vessels that nourish ... questions. Sorafenib (Nexavar) Sorafenib acts by blocking both angiogenesis and growth-stimulating molecules in the cancer cell ...

  9. Chronic Kidney Disease and Medicines

    MedlinePlus

    ... statement, and the Director's Update newsletter Offices & Divisions Organizational structure and ... you should take steps to protect your kidneys. Make changes to what you eat, manage your blood pressure, ...

  10. The kidney tight junction (Review)

    PubMed Central

    HOU, JIANGHUI

    2014-01-01

    The tight junction is an important subcellular organelle which plays a vital role in epithelial barrier function. Claudin, as the integral membrane component of tight junctions, creates a paracellular transport pathway for various ions to be reabsorbed by the kidneys. This review summarizes advances in claudin structure, function and pathophysiology in kidney diseases. Different claudin species confer selective paracellular permeability to each of three major renal tubular segments: the proximal tubule, the thick ascending limb of Henle’s loop and the distal nephron. Defects in claudin function can cause a wide spectrum of kidney diseases, such as hypomagnesemia, hypercalciuria, kidney stones and hypertension. Studies using transgenic mouse models with claudin mutations have recapitulated several of these renal disease phenotypes and have elucidated the underlying biological mechanisms. Modern recording approaches based upon scanning ion conductance microscopy may resolve the biophysical nature of claudin transport function and provide novel insight into tight junction architecture. PMID:25319473

  11. Development of the Mammalian Kidney.

    PubMed

    McMahon, Andrew P

    2016-01-01

    The basic unit of kidney function is the nephron. In the mouse, around 14,000 nephrons form in a 10-day period extending into early neonatal life, while the human fetus forms the adult complement of nephrons in a 32-week period completed prior to birth. This review discusses our current understanding of mammalian nephrogenesis: the contributing cell types and the regulatory processes at play. A conceptual developmental framework has emerged for the mouse kidney. This framework is now guiding studies of human kidney development enabled in part by in vitro systems of pluripotent stem cell-seeded nephrogenesis. A near future goal will be to translate our developmental knowledge-base to the productive engineering of new kidney structures for regenerative medicine. PMID:26969971

  12. Diet for Kidney Stone Prevention

    MedlinePlus

    ... specific type of kidney stone include the following: Calcium Oxalate Stones reducing sodium reducing animal protein, such as ... with increased daily sodium consumption. People who form calcium oxalate or calcium phosphate stones should limit their intake ...

  13. Stress and the Kidney

    PubMed Central

    Bruce, Marino A.; Griffith, Derek M.; Thorpe, Roland J.

    2016-01-01

    The prevalence of CKD has increased considerably over the past 2 decades. The rising rates of CKD have been attributed to known comorbidities such as diabetes, hypertension, and obesity; however, recent research has begun to explore the degree to which social, economic, and psychological factors have implications for the prevalence and progression of CKD, especially among high-risk populations such as African Americans. It has been suggested that stress can have implications for CKD, but this area of research has been largely unexplored. One contributing factor associated with the paucity of research on CKD is that many of the social, psychological, and environmental stressors cannot be recreated or simulated in a laboratory setting. Social science has established that stress can have implications for health, and we believe that stress is an important determinant of the development and progression of CKD. We draw heavily from the social scientific and social epidemiologic literature to present an intersectional conceptual frame specifying how stress can have implications for kidney disease, its progression, and its complications through multiple stressors and pathways. PMID:25573512

  14. The three-kidney rat

    SciTech Connect

    Provoost, A.P.; Van Aken, M.

    1984-01-01

    In contrast to the numerous research into the adaption of renal function when nephons are lost, much less attention has been paid to the effects of an extra kidney. Through the availability of inbred rat strains, techniques to transplant rat kidneys, and methods to measure total and individual kidney function repeatedly in the same animal, it became possible to study the renal function in rats with three kidneys. Adult male rats of a highly inbred Wistar strain were used. Nine recipients of a third kidney (3-K) were compared with 5 sham operated control (2-K) rats. The total GFR, as measured by the plasma clearance of Cr-5l EDTA, was taken 1,3,6,9, and 15 weeks after operation. The contribution of each kidney to the total renal function was determined by a Tc-99m DTPA scan performed at weeks 10 and 16. After transplantation the total GFR of 3-K rats was, in general, not different from the value before transplantation or from that of 2-K rats. The lack of increase of the GFR of 3-K rats was not the result of a non-functioning graft.

  15. Perioperative acute kidney injury.

    PubMed

    Goren, O; Matot, I

    2015-12-01

    Perioperative acute kidney injury (AKI) is not uncommon and is associated with considerable morbidity and mortality. Recently, several definition systems for AKI were proposed, incorporating both small changes of serum creatinine and urinary output reduction as diagnostic criteria. Novel biomarkers are under investigation as fast and accurate predictors of AKI. Several special considerations regarding the risk of AKI are of note in the surgical patient. Co-morbidities are important risk factors for AKI. The surgery in itself, especially emergency and major surgery in the critically ill, is associated with a high incidence of AKI. Certain types of surgeries, such as cardiac and transplantation surgeries, require special attention because they carry higher risk of AKI. Nephrotoxic drugs, contrast dye, and diuretics are commonly used in the perioperative period and are responsible for a significant amount of in-hospital AKI. Before surgery, the anaesthetist is required to identify patients at risk of AKI, optimize anaemia, and treat hypovolaemia. During surgery, normovolaemia is of utmost importance. Additionally, the surgical and anaesthesia team is advised to use measures to reduce blood loss and avoid unnecessary blood transfusion. Hypotension should be avoided because even short periods of mean arterial pressure <55-60 mm Hg carry a risk of postoperative AKI. Higher blood pressures are probably required for hypertensive patients. Urine output can be reduced significantly during surgery and is unrelated to perioperative renal function. Thus, fluids should not be given in excess for the sole purpose of avoiding or treating oliguria. Use of hydroxyethyl starch needs to be reconsidered. Recent evidence indicates a beneficial effect of administering low-chloride solutions. PMID:26658199

  16. Do Kidney Stone Formers Have A Kidney Disease?

    PubMed Central

    Zisman, Anna L.; Evan, Andrew P.; Coe, Fredric L.; Worcester, Elaine M.

    2015-01-01

    Nephrolithiasis is a highly prevalent disorder affecting approximately one in eleven people and is associated with multiple complications including hypertension, cardiovascular disease, and chronic kidney disease. Significant epidemiologic associations with chronic kidney disease and ESRD have been noted and are reviewed herein, but debate persists in the literature as to whether kidney stone formation is a pathogenic process contributing to kidney disease. Corroborating evidence supporting the presence of kidney disease in stone formers includes the variability of renal function by stone type, the positive association of stone size with renal dysfunction, the presence of markers of renal injury in the urine of even asymptomatic stone formers, and direct evidence of renal tissue injury on histopathology. Proposed pathogenic mechanisms include recurrent obstruction and comorbid conditions such as recurrent urinary tract infections and structural abnormalities. Recent work evaluating the renal histopathology of different groups of stone formers adds further granularity, suggesting variability in mechanisms of renal injury by stone type and confirming the pathogenic effects of crystal formation. Genetic abnormalities leading to stone formation including cystinuria and primary hyperoxaluria, among others, contribute to the burden of disease in the stone-forming population. PMID:26376133

  17. [Kidney donors and kidney transplantation in the elderly].

    PubMed

    Giessing, M; Conrad, S; Schönberger, B; Huland, H; Budde, K; Neumayer, H-H; Loening, S A

    2004-08-01

    The likelihood of terminal renal insufficiency escalates with age, increasing the risk of dying as a patient requiring dialysis. In 1999, Eurotransplant initiated the Eurotransplant Senior Programm (ESP), in which the kidneys of old donors (>64 years) are allocated to recipients 64 years and older. Allocation does not take HLA-matching into account and is performed regionally only according to blood-group-compatibility to keep the storage time short. As a consequence of the short ischemic time, and thus reduced non-immunological damage to the anyways susceptible old kidney, graft-function and graft-survival in the ESP are very good. The results of the initial 5 years of this program show that it successfully utilizes more kidneys from old donors and that more old recipients are being transplanted, with a satisfactory graft-function. Increased donor- and/or recipient age require a thorough evaluation to exclude malignant and other diseases. Furthermore, short term controls on the waiting list and following kidney transplantation are prerequisites for successful transplantation in the aged recipient. If this is guaranteed, kidney transplantation in the old recipient-even with old donor organs-is a good alternative to the morbidity of a prolonged dialysis. Nevertheless, the role of HLA-matching should be reconsidered to reduce rejections. PMID:15249962

  18. Hereditary Causes of Kidney Stones and Chronic Kidney Disease

    PubMed Central

    Edvardsson, Vidar O.; Goldfarb, David S.; Lieske, John C.; Beara-Lasic, Lada; Anglani, Franca; Milliner, Dawn S.; Palsson, Runolfur

    2013-01-01

    Adenine phosphoribosyltransferase (APRT) deficiency, cystinuria, Dent disease, familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) and primary hyperoxaluria (PH) are rare but important causes of severe kidney stone disease and/or chronic kidney disease in children. Recurrent kidney stone disease and nephrocalcinosis, particularly in pre-pubertal children, should alert the physician to the possibility of an inborn error of metabolism as the underlying cause. Unfortunately, the lack of recognition and knowledge of the five disorders has frequently resulted in an unacceptable delay in diagnosis and treatment, sometimes with grave consequences. A high index of suspicion coupled with early diagnosis may reduce or even prevent the serious long-term complications of these diseases. In this paper, we review the epidemiology, clinical features, diagnosis, treatment and outcome of patients with APRT deficiency, cystinuria, Dent disease, FHHNC and PH with emphasis on childhood manifestations. PMID:23334384

  19. Current Bioengineering Methods for Whole Kidney Regeneration

    PubMed Central

    Yamanaka, Shuichiro; Yokoo, Takashi

    2015-01-01

    Kidney regeneration is likely to provide an inexhaustible source of tissues and organs for immunosuppression-free transplantation. It is currently garnering considerable attention and might replace kidney dialysis as the ultimate therapeutic strategy for renal failure. However, anatomical complications make kidney regeneration difficult. Here, we review recent advances in the field of kidney regeneration, including (i) the directed differentiation of induced pluripotent stem cells/embryonic stem cells into kidney cells; (ii) blastocyst decomplementation; (iii) use of a decellularized cadaveric scaffold; (iv) embryonic organ transplantation; and (v) use of a nephrogenic niche for growing xenoembryos for de novo kidney regeneration from stem cells. All these approaches represent potentially promising therapeutic strategies for the treatment of patients with chronic kidney disease. Although many obstacles to kidney regeneration remain, we hope that innovative strategies and reliable research will ultimately allow the restoration of renal function in patients with end-stage kidney disease. PMID:26089921

  20. Adult stem-like cells in kidney.

    PubMed

    Hishikawa, Keiichi; Takase, Osamu; Yoshikawa, Masahiro; Tsujimura, Taro; Nangaku, Masaomi; Takato, Tsuyoshi

    2015-03-26

    Human pluripotent cells are promising for treatment for kidney diseases, but the protocols for derivation of kidney cell types are still controversial. Kidney tissue regeneration is well confirmed in several lower vertebrates such as fish, and the repair of nephrons after tubular damages is commonly observed after renal injury. Even in adult mammal kidney, renal progenitor cell or system is reportedly presents suggesting that adult stem-like cells in kidney can be practical clinical targets for kidney diseases. However, it is still unclear if kidney stem cells or stem-like cells exist or not. In general, stemness is defined by several factors such as self-renewal capacity, multi-lineage potency and characteristic gene expression profiles. The definite use of stemness may be obstacle to understand kidney regeneration, and here we describe the recent broad findings of kidney regeneration and the cells that contribute regeneration. PMID:25815133

  1. Living kidney donors and ESRD.

    PubMed

    Ross, Lainie Friedman

    2015-07-01

    There are more than 325 living kidney donors who have developed end-stage renal disease and have been listed on the Organ Procurement and Transplantation Network (OPTN)/United Network for Organ Sharing (UNOS) deceased donor kidney wait list. The OPTN/UNOS database records where these kidney donors are listed and, if they donated after April 1994, where that donation occurred. These 2 locations are often not the same. In this commentary, I examine whether a national living donor registry should be created and whether transplantation centers should be notified when one of their living kidney donors develops end-stage renal disease. I consider and refute 5 potential objections to center notification. I explain that transplantation centers should look back at these cases and input data into a registry to attempt to identify patterns that could improve donor evaluation protocols. Creating a registry and mining the information it contains is, in my view, our moral and professional responsibility to future patients and the transplantation endeavor. As individuals and as a community, we need to acknowledge the many unknown risks of living kidney donation and take responsibility for identifying these risks. We then must share information about these risks, educate prospective donors about them, and attempt to minimize them. PMID:25936672

  2. Supernumerary Kidney With a Horseshoe Component☆

    PubMed Central

    Fathollahi, Ali

    2014-01-01

    We report a case of supernumerary kidney consisting of 4 renal moieties and including a horseshoe kidney. A 40-year-old woman presented complaining of intermittent vague abdominal pain and heaviness for a few years. Ultrasonography of the urinary tract revealed 2 kidneys on the left side and horseshoe kidneys located distal to them. The right horseshoe kidney was of small size. Further imaging revealed 4 renal moieties. Three moieties were on the left side and the other was attached to the most distal moiety on the left, forming a horseshoe kidney.

  3. Vertical and horizontal NO2 transport in urban area associated with land-sea breeze as observed by ground-based MAX-DOAS

    NASA Astrophysics Data System (ADS)

    Takashima, H.; Kanaya, Y.

    2013-12-01

    Since July 2012, continuous NO2 profile observations have been performed by using ground-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) at Fukuoka (33.55N, 130.36E), an urban site in Japan. MAX-DOAS is a passive remote sensing technique using scatted visible and ultraviolet solar radiation at several elevation angles, and it can allow us to retrieve vertical information on several trace gasses. In this study, the vertical resolution of the profiles is roughly 1 km below 2 km height. We investigate inhomogeneity of NO2 over Fukuoka by observing at two azimuth angles, Tenjin (downtown area) direction and Itoshima (out of downtown area) direction. Understanding of the spatial inhomogeneity of NO2 in urban area is important for measuring a priori profiles for satellite and for validating chemical transport model. Diurnal variation with maximum in the morning is clearly observed in both directions throughout the year for 0-1 km. Diurnal variation with maximum around noon is sometimes observed in Itoshima direction, which is delayed by 1-2 hours from maxima in Tenjin direction. The NO2 maximum for upper level (1-2 km) is also delayed from the maximum in Tenjin direction. From the analysis of surface wind field, these variations seems to be strongly related to vertical/horizontal transport of high concentration of NO2 from the downtown area (and development of the boundary layer) and horizontal transport of low concentration from ocean associated with land-sea breeze. We also present a comparison of NO2 data measured with the Ozone Monitoring Instrument (OMI) satellite sensor.

  4. PAI-1 and kidney fibrosis

    PubMed Central

    Ma, Li-Jun; Fogo, Agnes B.

    2016-01-01

    Substantial evidence demonstrates a link of increased plasminogen activator inhibitor-1 (PAI-1) and glomerulosclerosis and kidney fibrosis, providing a novel therapeutic option for prevention and treatment of chronic kidney diseases. Several mechanisms contributing to increased PAI-1 will be addressed, including classic key profibrotic factors such as the renin-angiotensin-system (RAS) and transforming growth factor-beta (TGF-β), and novel molecules identified by proteomic analysis, such as thymosin- β4. The fibrotic sequelae caused by increased PAI-1 in kidney depend not only on its classic inhibition of tissue-type and urokinase-type plasminogen activators (tPA and uPA), but also its influence on cell migration. PMID:19273183

  5. Hypercoagulability in Kidney Transplant Recipients.

    PubMed

    Parajuli, Sandesh; Lockridge, Joseph B; Langewisch, Eric D; Norman, Douglas J; Kujovich, Jody L

    2016-04-01

    Thrombosis remains an important complication after kidney transplantation. Outcomes for graft and deep vein thrombosis are not favorable. The majority of early kidney transplant failure in adults is due to allograft thrombosis. Risk stratification, early diagnosis, and appropriate intervention are critical to the management of thrombotic complications of transplant. In patients with end-stage renal disease, the prevalence of acquired risk factors for thrombosis is significantly high. Because of hereditary and acquired risk factors, renal transplant recipients manifest features of a chronic prothrombotic state. Identification of hereditary thrombotic risk factors before transplantation may be a useful tool for selecting appropriate candidates for thrombosis prophylaxis immediately after transplantation. Short-term anticoagulation may be appropriate for all patients after kidney transplantation. PMID:26413991

  6. Computational analysis of kidney scintigrams

    NASA Astrophysics Data System (ADS)

    Vrincianu, D.; Puscasu, E.; Creanga, D.; Stefanescu, C.

    2013-11-01

    The scintigraphic investigation of normal and pathological kidneys was carried out using specialized gamma-camera device from nuclear medicine hospital department. Technetium 90m isotope with gamma radiation emission, coupled with vector molecules for kidney tissues was introduced into the subject body, its dynamics being recorded as data source for kidney clearance capacity. Two representative data series were investigated, corresponding to healthy and pathological organs respectively. The semi-quantitative tests applied for the comparison of the two distinct medical situations were: the shape of probability distribution histogram, the power spectrum, the auto-correlation function and the Lyapunov exponent. While power spectrum led to similar results in both cases, significant differences were revealed by means of distribution probability, Lyapunov exponent and correlation time, recommending these numerical tests as possible complementary tools in clinical diagnosis.

  7. Growing kidney in the frog.

    PubMed

    Chan, Techuan; Asashima, Makoto

    2006-01-01

    An understanding of the regulation of kidney development has increased dramatically in the past decade. The pronephros, mesonephros, and metanephros represent three distinct renal organs that function, in succession, as the vertebrate excretory system during development of the kidney. These three organ systems are derived from the intermediate mesoderm and develop in a well-defined temporal and spatial sequence. The pronephros, which consists of a tubule, duct and glomus, is established first and is the simplest of the excretory organs in vertebrates. Xenopus pronephros serves as an ideal model for investigating organogenesis and development of renal function in vertebrates. In this article, we highlight the advantages of Xenopus for analyzing kidney organogenesis and the latest research in pronephros development. PMID:16554664

  8. Radiation-associated kidney injury.

    PubMed

    Dawson, Laura A; Kavanagh, Brian D; Paulino, Arnold C; Das, Shiva K; Miften, Moyed; Li, X Allen; Pan, Charlie; Ten Haken, Randall K; Schultheiss, Timothy E

    2010-03-01

    The kidneys are the dose-limiting organs for radiotherapy to upper abdominal cancers and during total body irradiation. The incidence of radiotherapy-associated kidney injury is likely underreported owing to its long latency and because the toxicity is often attributed to more common causes of kidney injury. The pathophysiology of radiation injury is poorly understood. Its presentation can be acute and irreversible or subtle, with a gradual progressive dysfunction over years. A variety of dose and volume parameters have been associated with renal toxicity and are reviewed to provide treatment guidelines. The available predictive models are suboptimal and require validation. Mitigation of radiation nephropathy with angiotensin-converting enzyme inhibitors and other compounds has been shown in animal models and, more recently, in patients. PMID:20171504

  9. Computational analysis of kidney scintigrams

    SciTech Connect

    Vrincianu, D.; Puscasu, E.; Creanga, D.; Stefanescu, C.

    2013-11-13

    The scintigraphic investigation of normal and pathological kidneys was carried out using specialized gamma-camera device from nuclear medicine hospital department. Technetium 90m isotope with gamma radiation emission, coupled with vector molecules for kidney tissues was introduced into the subject body, its dynamics being recorded as data source for kidney clearance capacity. Two representative data series were investigated, corresponding to healthy and pathological organs respectively. The semi-quantitative tests applied for the comparison of the two distinct medical situations were: the shape of probability distribution histogram, the power spectrum, the auto-correlation function and the Lyapunov exponent. While power spectrum led to similar results in both cases, significant differences were revealed by means of distribution probability, Lyapunov exponent and correlation time, recommending these numerical tests as possible complementary tools in clinical diagnosis.

  10. The exposome for kidney stones.

    PubMed

    Goldfarb, David S

    2016-02-01

    The exposome is the assembly and measure of all the exposures of an individual in a lifetime. An individual's exposures begin before birth and include insults from environmental and occupational sources. The associated field is called exposomics, which relies on the application of internal and external exposure assessment methods. Exposomics has not yet been thoroughly applied to the study of kidney stones although much is known about how diet and fluid intake affect nephrolithiasis. Some other novel exposures that may contribute to kidney stones are discussed including use of antibiotics, urbanization and migration to urban heat islands, and occupation. People whose school and jobs limit their access to fluids and adequate bathroom facilities may have higher prevalence of stones. Examples include athletes, teachers, heathcare workers, and cab drivers. Occupational kidney stones have received scant attention and may represent a neglected, and preventable, type of stone. An exposomic-oriented history would include a careful delineation of occupation and activities. PMID:26615595

  11. Radiation-Associated Kidney Injury

    SciTech Connect

    Dawson, Laura A.; Kavanagh, Brian D.; Paulino, Arnold C.; Das, Shiva K.; Miften, Moyed; Li, X. Allen; Pan, Charlie; Ten Haken, Randall K.; Schultheiss, Timothy E.

    2010-03-01

    The kidneys are the dose-limiting organs for radiotherapy to upper abdominal cancers and during total body irradiation. The incidence of radiotherapy-associated kidney injury is likely underreported owing to its long latency and because the toxicity is often attributed to more common causes of kidney injury. The pathophysiology of radiation injury is poorly understood. Its presentation can be acute and irreversible or subtle, with a gradual progressive dysfunction over years. A variety of dose and volume parameters have been associated with renal toxicity and are reviewed to provide treatment guidelines. The available predictive models are suboptimal and require validation. Mitigation of radiation nephropathy with angiotensin-converting enzyme inhibitors and other compounds has been shown in animal models and, more recently, in patients.

  12. Mathematical Modeling of Kidney Transport

    PubMed Central

    Layton, Anita T.

    2013-01-01

    In addition to metabolic waste and toxin excretion, the kidney also plays an indispensable role in regulating the balance of water, electrolytes, nitrogen, and acid-base. In this review, we describe representative mathematical models that have been developed to better understand kidney physiology and pathophysiology, including the regulation of glomerular filtration, the regulation of renal blood flow by means of the tubuloglomerular feedback mechanisms and of the myogenic mechanism, the urine concentrating mechanism, epithelial transport, and regulation of renal oxygen transport. We discuss the extent to which these modeling efforts have expanded our understanding of renal function in both health and disease. PMID:23852667

  13. [MICROBIAL COMMUNITIES ON KIDNEY STONES].

    PubMed

    Romanova, Yu M; Mulabaev, N S; Tolordava, E R; Seregin, A V; Seregin, I V; Alexeeva, N V; Stepanova, T V; Levina, G A; Barhatova, O I; Gamova, N A; Goncharova, S A; Didenko, L V; Rakovskaya, I V

    2015-01-01

    The clinical material obtained surgically in patients with kidney stone disease (KSD) was tested for content of the stone microflora using PCR and standard microbiological methods. It was demonstrated that about 50% of stones in patients with KSD were infected with various infection agents as observed using standard microbiological and molecular genetic methods. The percentage of detection of the Mycoplasma hominis using cultural method is lower than the percentage detected using PCR, which is due to difficult isolation and cultivation, as well as DNA fragments of mycoplasma observed after antibiotic therapy. Studies based on modern microscopy methods showed that microorganisms on the surface of the kidney stone formed multispecies biofilms. PMID:26182663

  14. [Mechanism of and Therapy for Kidney Fibrosis].

    PubMed

    Kuma, Akihiro; Tamura, Masahito; Otsuji, Yutaka

    2016-03-01

    Fibrosis occurs in systemic tissues other than the brain and finally induces dysfunction of the fibrotic organ. Kidney fibrosis is related to scarring after acute kidney injury and the progression of chronic kidney disease. Kidney function decreases with the progression of kidney fibrosis. As fibrotic tissue cannot return to its original status, advanced kidney fibrosis requires the administration of dialysis or kidney transplantation. Thus, elucidation the mechanism of kidney fibrosis is an important research theme. The proliferation and activation of (myo) fibroblasts and the excessive production of an extracellular matrix are common mechanisms in fibrosis in many organs, but it seems that kidney fibrosis has specific pathways. Tubular epithelial, mesangial cells, and erythropoietin producing cells, which exist only in the kidney, participate in forming kidney fibrosis. This review highlights an understanding of the cells and their underlying mechanisms, which are specific to kidney fibrosis process: transforming growth factor-β (TGF-β), epithelial-mesenchymal transition, wingless/int-1 (WNT) signaling, renal anemia, and uremia. Finally, we describe potential therapies that focus on the mechanisms of kidney fibrosis: anti-TGF-β antibody and mammalian target of rapamycin (mTOR). PMID:26972942

  15. Health Literacy of Living Kidney Donors and Kidney Transplant Recipients

    PubMed Central

    Dageforde, Leigh Anne; Petersen, Alec W.; Feurer, Irene D.; Cavanaugh, Kerri L.; Harms, Kelly A.; Ehrenfeld, Jesse M.; Moore, Derek E.

    2015-01-01

    Background Health literacy (HL) may be a mediator for known socioeconomic and racial disparities in living kidney donation. Methods We evaluated the associations of patient and demographic characteristics with HL in living kidney donors (LD), living donor kidney transplant recipients (LDR), and deceased donor recipients (DDR) in a single center retrospective review of patients undergoing kidney donation or transplantation from September 2010 to July 2012. HL and demographic data were collected. HL was assessed via the Short Literacy Survey (SLS) comprising three self-reported screening questions scored using the 5-point Likert scale [low (3-8), moderate (9-14), high (15)]. Chi-square and logistic regression were used to test factors associated with lower HL. Results The sample included 360 adults (105 LD, 103 LDR, 152 DDR; 46±14 years; 70% white; 56% male; 14±3 years of education). HL scores were skewed (49% high, 41% moderate, 10% low). The distribution of HL categories differed significantly among groups (p=0.019). After controlling for age, race, gender, education and a race-education interaction term, DDR were more likely to have moderate or low HL than LDR (OR 1.911; 95%CI 1.096, 3.332; p=0.022) Conclusions Overall, living donors had high HL. The distribution of low, moderate and high HL differed significantly between LD, DDR and LDR. DDR had a higher likelihood of having low HL than LDR. Screening kidney transplant candidates and donors for lower HL may identify barriers to living donation. Future interventions addressing HL may be important to increase living donation and reduce disparities. PMID:24573114

  16. Pre-Practicum Training in Professional Psychology to Close the Research-Practice Gap: Changing Attitudes Towards Evidence-Based Practice

    PubMed Central

    Bearman, Sarah Kate; Wadkins, Melanie; Bailin, Abby; Doctoroff, Greta

    2014-01-01

    Despite the rapid proliferation of mental health interventions with proven benefit for youth, empirically supported interventions (ESIs) are underutilized in most service settings. Treatment outcome studies in these community-based settings suggest that the majority of youth do not show improvement, underscoring the importance of addressing the gap between research and practice. Clinician attitudes toward evidence-based practice (EBP) may limit the use of ESIs, and efforts to address these attitudes with post-graduate training pose significant challenges. Pre-practicum training in EBP may address these challenges by familiarizing students with the framework of EBP as well as with the current youth treatment evidence base and the theories and strategies of well-supported interventions. We describe a required EBP course within a professional psychology doctoral program. Forty-two students in two class cohorts completed a measure of attitudes toward EBP prior to the first class and after the final class lecture. Students were predominantly Caucasian women with bachelor's degrees. As expected, over the course of the class, student attitudes became significantly more favorable toward EBP. Students who had previously received a master's degree had more favorable attitudes prior to the class, and students with a prior bachelor's degree showed the greatest change in attitude. The results support the use of pre-practicum training in EBP to improve attitudes toward EBP, which may lead to use of effective practices with clients following training. PMID:25745525

  17. Racial Disparity in Kidney Transplant Outcomes Narrows

    MedlinePlus

    ... Health News on: African American Health Health Disparities Kidney Transplantation Recent Health News Related MedlinePlus Health Topics African American Health Health Disparities Kidney Transplantation About MedlinePlus Site Map FAQs Contact Us Get ...

  18. Ultrasound: Renal (Kidneys, Ureters, Bladder) (For Parents)

    MedlinePlus

    ... present since birth the presence of blockages or kidney stones complications of a urinary tract infection (UTI) cysts ... and Related Conditions Urinary Tract Infections Wilms Tumor Kidney Stones Vesicoureteral Reflux (VUR) Glomerulonephritis Ultrasound: Abdomen Ultrasound: Bladder ...

  19. Study Links Climate Change to Kidney Disease

    MedlinePlus

    ... gov/medlineplus/news/fullstory_158680.html Study Links Climate Change to Kidney Disease Rising temperatures, less rain seen ... 5, 2016 THURSDAY, May 5, 2016 (HealthDay News) -- Climate change may boost rates of chronic kidney disease worldwide ...

  20. Prevent Diabetes Problems: Keep Your Kidneys Healthy

    MedlinePlus

    ... Fund National Kidney Foundation American Diabetes Association JDRF Diabetes Disease Organizations Many organizations provide support to patients ... PDF, 293 KB). Alternate Language URL Español Prevent diabetes problems: Keep your kidneys healthy Page Content On ...