Science.gov

Sample records for agricultural capacity retards

  1. Rehearsal Capacity and Dimensional Independence in Retardates

    ERIC Educational Resources Information Center

    McBane, Bonnie M.

    1976-01-01

    Retardate use of retention strategies and the independence of color and form retention were compared with predictions of the Attention-Retention theory of retardate discrimination learning. Institutional retardates were selected from two MA ranges, 6 to 8 and 9 to 12 years, without regard to diagnostic categories. (Author/JH)

  2. Sorption-capacity limited retardation of radionuclides transport in water-saturated packing materials

    SciTech Connect

    Pescatore, C.; Sullivan, T.

    1984-01-01

    Radionuclides breakthrough times as calculated through constant retardation factors obtained in dilute solutions are non-conservative. The constant retardation approach regards the solid as having infinite sorption capacity throughout the solid. However, as the solid becomes locally saturated, such as in the proximity of the waste form-packing materials interface, it will exhibit no retardation properties, and transport will take place as if the radionuclides were locally non-reactive. The magnitude of the effect of finite sorption capacity of the packing materials on radionuclide transport is discussed with reference to high-level waste package performance. An example based on literature sorption data indicates that the breakthrough time may be overpredicted by orders of magnitude using a constant retardation factor as compared to using the entire sorption isotherm to obtain a concentration-dependent retardation factor. 8 references, 3 figures, 3 tables.

  3. Stimulating the Imaginative Capacities of Agricultural Extension Students

    ERIC Educational Resources Information Center

    Liang, Chaoyun; Chang, Wen-Shan; Yao, Shu-Nung; King, Jung-Tai; Chen, Shi-An

    2016-01-01

    Purpose: To address the dynamic challenges associated with developing a globally sustainable society, numerous scholars have stressed the need to cultivate the imagination of agricultural students. This study aimed to explore how pictorial representations stimulate the imaginative capacities of agricultural extension students.…

  4. Mapping agricultural landscapes and characterizing adaptive capacity in Central America

    NASA Astrophysics Data System (ADS)

    Holland, M. B.; Imbach, P. A.; Bouroncle, C.; Donatti, C.; Leguia, E.; Martinez, M.; Medellin, C.; Saborio-Rodriguez, M.; Shamer, S.; Zamora, J.

    2013-12-01

    One of the key challenges in developing adaptation strategies for smallholder farmers in developing countries is that of a data-poor environment, where spatially-explicit information about where the most vulnerable smallholder communities are located is lacking. Developing countries tend to lack consistent and reliable maps on agricultural land use, and have limited information available on smallholder adaptive capacity. We developed a novel participatory and expert mapping process to overcome these barriers and develop detailed national-scale maps that allow for a characterization of unique agricultural landscapes based on profiles of adaptive capacity for smallholder agriculture in each area. This research focuses specifically on the Central American nations of Costa Rica, Guatemala, and Honduras, where our focus is on coffee and basic grains as the two main cropping systems. Here we present the methodology and results of a series of in-depth interviews and participatory mapping sessions with experts working within the broader agricultural sector in each country. We held individual interviews and mapping sessions with approximately thirty experts from each country, and used a detailed survey instrument for each mapping session to both spatially identify distinct agricultural landscapes, and to further characterize each area based on specific farm practices and social context. The survey also included a series of questions to help us assess the relative adaptive capacity of smallholder agriculture within each landscape. After all expert mapping sessions were completed in each country we convened an expert group to assist in both validating and refining the set of landscapes already defined. We developed a characterization of adaptive capacity by aggregating indicators into main assets-based criteria (e.g. land tenure, access to credit, access to technical assistance, sustainable farm practices) derived from further expert weighting of indicators through an online

  5. Quantifying the capacity of compost buffers for treating agricultural runoff

    NASA Astrophysics Data System (ADS)

    Naranjo, S. A.; Beighley, R. E.; Buyuksonmez, F.

    2007-12-01

    Agricultural operations, specifically, avocado and commercial nurseries require frequent and significant fertilizing and irrigating which tends to result in excessive nutrient leaching and off-site runoff. The increased runoff contains high concentrations of nutrients which negatively impacts stream water quality. Researcher has demonstrated that best management practices such as compost buffers can be effective for reducing nutrient and sediment concentrations in agricultural runoff. The objective of this research is to evaluate both the hydraulic capacity and the nutrient removal efficiency of: (a) compost buffers and (b) buffers utilizing a combination of vegetation and compost. A series of experiments will be performed in the environmental hydraulics laboratory at San Diego State University. A tilting flume 12-m long, 27-cm wide and 25-cm deep will be used. Discharge is propelled by an axial flow pump powered by a variable speed motor with a maximum capacity of 30 liters per second. The experiments are designed to measure the ratio compost mass per flow rate per linear width. Two different discharges will be measured: (a) treatment discharge (maximum flow rate such that the buffer decreases the incoming nitrogen and phosphorus concentrations below a maximum allowable limit) and (b) breaking discharge (maximum flow rate the buffer can tolerate without structural failure). Experimental results are presented for the hydraulic analysis, and preliminary results are presented for the removal of nitrogen and phosphorus from runoff. The results from this project will be used to develop guidelines for installing compost buffers along the perimeters of nursery sites and avocado groves in southern California.

  6. From Agricultural Extension to Capacity Development: Exploring the Foundations of an Emergent Form of Practice

    ERIC Educational Resources Information Center

    Lauzon, Al

    2013-01-01

    This essay argues that capacity development is a response to changes in the organization and practice of agricultural extension as these changes have excluded small resource farmers. In this essay I trace the changes in the organization of agricultural extension through to the emergence of the concept and practice of capacity development. The idea…

  7. Training for Innovation: Capacity-Building in Agricultural Research in Post-War Sierra Leone

    ERIC Educational Resources Information Center

    Gboku, Matthew L. S.; Bebeley, Jenneh F.

    2016-01-01

    This paper examines how the Sierra Leone Agricultural Research Institute (SLARI) used training and development to build capacity for innovation in agricultural research following the country's civil war which ended in 2002. The Institute's training for innovation addressed different agricultural product value chains (APVCs) within the framework of…

  8. Climate change, diversified agriculture and adaptive capacity in Hawaii

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Export-oriented sugar cane and pineapple plantation agriculture once dominated Hawaii's economy but over the latter half of the 20th Century, there was a rapid decline in the production of these crops as Hawaii's competitive advantage over foreign producers dwindled. The decline of the plantations c...

  9. Challenges and Opportunities for Developing Capacity in Earth Observations for Agricultural Monitoring: The GEOGLAM Experience

    NASA Astrophysics Data System (ADS)

    Whitcraft, A. K.; Di Bella, C. M.; Becker Reshef, I.; Deshayes, M.; Justice, C. O.

    2015-12-01

    Since 2011, the Group on Earth Observations Global Agricultural Monitoring (GEOGLAM) Initiative has been working to strengthen the international community's capacity to use Earth observation (EO) data to derive timely, accurate, and transparent information on agriculture, with the goals of reducing market volatility and promoting food security. GEOGLAM aims to develop capacity for EO-based agricultural monitoring at multiple scales, from national to regional to global. This is accomplished through training workshops, developing and transferring of best-practices, establishing networks of broad and sustainable institutional support, and designing or adapting tools and methodologies to fit localized contexts. Over the past four years, capacity development activities in the context of GEOGLAM have spanned all agriculture-containing continents, with much more work to be done, particularly in the domains of promoting access to large, computationally-costly datasets. This talk will detail GEOGLAM's experiences, challenges, and opportunities surrounding building international collaboration, ensuring institutional buy-in, and developing sustainable programs.

  10. The Use of a Group Approach in the Rehabilitation of Severely Retarded Adolescents in Agriculture in Israel. Final Report.

    ERIC Educational Resources Information Center

    Chigier, E.

    The project investigated aspects of group dynamics and group behavior with mentally retarded adolescents, aged 18 to 25 years with a mental age ranging from 3 to 7 years, who worked in citriculture in Israel. The report began with an examination of the peer group principle, its relationship to childhood, adolescence, and adulthood, and its…

  11. Riverine Threat Indices to Assess Watershed Condition and Identify Primary Management Capacity of Agriculture Natural Resource Management Agencies

    NASA Astrophysics Data System (ADS)

    Fore, Jeffrey D.; Sowa, Scott P.; Galat, David L.; Annis, Gust M.; Diamond, David D.; Rewa, Charles

    2014-03-01

    Managers can improve conservation of lotic systems over large geographies if they have tools to assess total watershed conditions for individual stream segments and can identify segments where conservation practices are most likely to be successful (i.e., primary management capacity). The goal of this research was to develop a suite of threat indices to help agriculture resource management agencies select and prioritize watersheds across Missouri River basin in which to implement agriculture conservation practices. We quantified watershed percentages or densities of 17 threat metrics that represent major sources of ecological stress to stream communities into five threat indices: agriculture, urban, point-source pollution, infrastructure, and all non-agriculture threats. We identified stream segments where agriculture management agencies had primary management capacity. Agriculture watershed condition differed by ecoregion and considerable local variation was observed among stream segments in ecoregions of high agriculture threats. Stream segments with high non-agriculture threats were most concentrated near urban areas, but showed high local variability. 60 % of stream segments in the basin were classified as under U.S. Department of Agriculture's Natural Resources Conservation Service (NRCS) primary management capacity and most segments were in regions of high agricultural threats. NRCS primary management capacity was locally variable which highlights the importance of assessing total watershed condition for multiple threats. Our threat indices can be used by agriculture resource management agencies to prioritize conservation actions and investments based on: (a) relative severity of all threats, (b) relative severity of agricultural threats, and (c) and degree of primary management capacity.

  12. Riverine threat indices to assess watershed condition and identify primary management capacity of agriculture natural resource management agencies.

    PubMed

    Fore, Jeffrey D; Sowa, Scott P; Galat, David L; Annis, Gust M; Diamond, David D; Rewa, Charles

    2014-03-01

    Managers can improve conservation of lotic systems over large geographies if they have tools to assess total watershed conditions for individual stream segments and can identify segments where conservation practices are most likely to be successful (i.e., primary management capacity). The goal of this research was to develop a suite of threat indices to help agriculture resource management agencies select and prioritize watersheds across Missouri River basin in which to implement agriculture conservation practices. We quantified watershed percentages or densities of 17 threat metrics that represent major sources of ecological stress to stream communities into five threat indices: agriculture, urban, point-source pollution, infrastructure, and all non-agriculture threats. We identified stream segments where agriculture management agencies had primary management capacity. Agriculture watershed condition differed by ecoregion and considerable local variation was observed among stream segments in ecoregions of high agriculture threats. Stream segments with high non-agriculture threats were most concentrated near urban areas, but showed high local variability. 60 % of stream segments in the basin were classified as under U.S. Department of Agriculture's Natural Resources Conservation Service (NRCS) primary management capacity and most segments were in regions of high agricultural threats. NRCS primary management capacity was locally variable which highlights the importance of assessing total watershed condition for multiple threats. Our threat indices can be used by agriculture resource management agencies to prioritize conservation actions and investments based on: (a) relative severity of all threats, (b) relative severity of agricultural threats, and (c) and degree of primary management capacity. PMID:24390081

  13. Preparation of agricultural residue anion exchangers and its nitrate maximum adsorption capacity.

    PubMed

    Orlando, U S; Baes, A U; Nishijima, W; Okada, M

    2002-09-01

    Anion exchangers were prepared from different agricultural residues (AR) after reaction with epichlorohydrin and dimethylamine in the presence of pyridine and N,N-dimethylformamide (EDM method). Agricultural residues anion exchangers (AR-AE) produced by the EDM method were inexpensive and showed almost the same NO3- removal capacities as Amberlite IRA-900. AR-AE produced from AR with higher hemicelluloses, lignin, ash and extractive contents resulted in the lower yields. Sugarcane bagasse with the highest alpha-cellulose contents of 51.2% had the highest yield (225%) and lowest preparation cost. The highest maximum adsorption capacity (Qmax) for nitrate was obtained from rice hull (1.21 mmol g(-1)) and pine bark natural exchangers (1.06 mmol g(-1)). No correlation was found between Qmax and alpha-cellulose content in the original AR. AR-AE produced from different AR demonstrated comparable Qmax due to the removal of non-active compounds such as extractives, lignin and hemicelluloses from AR during the preparation process. Similar preparation from pure cellulose and pure alkaline lignin demonstrated that the EDM method could not produce anion exchangers from pure lignin due to its solubilization after the reaction with epichlorohydrin. PMID:12227509

  14. Capacity Building in NASA Remote Sensing Data for Meteorological and Agricultural Communities in East Africa

    NASA Astrophysics Data System (ADS)

    Granger, S. L.; Andreadis, K.; Das, N. N.; Macharia, D.

    2015-12-01

    Across the globe, planners and decision makers are hampered by a lack of historic data and scant in situ observations on which to base policy and action plans. Data is often sorely lacking in poorly developed regions such as East Africa where people are vulnerable to a changing climate, extreme weather events, and economies and food security are tied directly to rain fed agriculture or pastoral cultures. NASA global remote sensing observations and research are promising in this regard, as they have great potential to inform policy- and decision-making at global, regional and even local scales the world over, However that potential is not realized as often as it should for a variety of reasons: the data stores are often impenetrable requiring special expertise to "crack the code", sustainability of observations remains a concern, and research and data are not focused on applications, thus results don't "fit" in existing tools or are developed for a short-term science objective without long-term use in mind. Although there are good examples of the use of NASA Earth Science research and observations for applications, capacity is lacking and must be built to advance the use of remote sensing for applications and to ease transition of research to the stakeholder. Capacity building is a critical component to transition Earth science research results to stakeholder communities, and is more than traditional training,, it has been described as…."the process of developing and strengthening the skills, instincts, abilities, processes and resources that organizations and communities need to survive, adapt, and thrive in the fast-changing world. Best practices and lessons learned from recent capacity building efforts for Agricultural and Environmental Ministires in East African in support of a NASA-SERVIR Applied Science Project to provide estimates of hydrologic extremes tied to crop yield are described.

  15. Building Capacity to Use Earth Observations in Decision Making for Climate, Health, Agriculture and Natural Disasters

    NASA Astrophysics Data System (ADS)

    Robertson, A. W.; Ceccato, P.

    2015-12-01

    In order to fill the gaps existing in climate and public health, agriculture, natural disasters knowledge and practices, the International Research Institute for Climate and Society (IRI) has developed a Curriculum for Best Practices in Climate Information. This Curriculum builds on the experience of 10 years courses on 'Climate Information' and captures lessons and experiences from different tailored trainings that have been implemented in many countries in Africa, Asia and Latin America. In this presentation, we will provide examples of training activities we have developed to bring remote sensing products to monitor climatic and environmental information into decision processes that benefited users such as the World Health Organization, Ministries of Health, Ministries of Agriculture, Universities, Research Centers such as CIFOR and FIOCRUZ. The framework developed by IRI to provide capacity building is based on the IDEAS framework: Innovation (research) Around climate impacts, evaluation of interventions, and the value of climate information in reducing risks and maximizing opportunities Demonstration E.g. in-country GFCS projects in Tanzania and Malawi - or El Nino work in Ethiopia Education Academic and professional training efforts Advocacy This might focus on communication of variability and change? We are WHO collaborating center so are engaged through RBM/Global Malaria Programme Service ENACTS and Data library key to this. Country data better quality than NASA as incorporates all relevant station data and NASA products. This presentation will demonstrate how the IDEAS framework has been implemented and lessons learned.

  16. [Purification capacity of ditch wetland to agricultural non-point pollutants].

    PubMed

    Jiang, Cui-ling; Cui, Guang-bo; Fan, Xiao-qiu; Zhang, Yi-bing

    2004-03-01

    Ditch wetlands have the capacity to remove and purify non-point pollutants from agricultural drainage by sediment retention, plant absorption and microorganism decomposition. Phragmites communis and Zizania latifolia are two main kinds of plants growing naturally in ditch wetlands in the lower reaches of the Yangtze River. They can absorb N and P efficiently, which is the main mechanism of non-point source pollutants purification by wetlands. The harvest of Phragmites communis and Zizania latifolia will take away 463-515 kg/hm2 of N and 127-149 kg/hm2 of P each year, it equal to N and P discharged from 2.3-3.2 hm2 and 1.3-3.0 hm2 of fields respectively in this area. The absorption and decomposition capacity of Zizania latifolia wetland is higher than Phragmites communis wetland. After harvest of plants, wetlands are uncovered to sunlight and oxygen that speeds the transportation and decomposition of nutrients. The amount of organic matters, TN and TP are higher in sediment of harvested area than in that of control. Therefore, seasonal harvest of plants is an efficient measure for wetlands to purify nutrients and alleviate eutrophication of lakes. PMID:15202249

  17. China's Approach to Mental Retardation.

    ERIC Educational Resources Information Center

    Hittman, Stephan

    History, tradition, culture, and superstition have played significant roles in influencing Chinese attitudes toward the mentally retarded. China's overwhelmingly rural, agricultural society has made it dependent upon a huge force of semi-skilled and unskilled labor, to which the retarded are capable of contribution. The stress on self-reliance,…

  18. MITIGATION CAPACITIES OF AGRICULTURAL DRAINAGE DITCHES FOR FERTILIZER CONTAMINATION FROM NO-TILL COTTON

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agricultural drainage ditches are important routes of preferential flow in agricultural systems providing a rapid, more direct path for nutrient (N and P) laden drainage waters to reach downstream environments. Drainage ditches are forgotten links between agricultural farms and receiving waters, th...

  19. Agricultural vulnerability over the Chinese Loess Plateau in response to climate change: Exposure, sensitivity, and adaptive capacity.

    PubMed

    Li, Xueling; Philp, Joshua; Cremades, Roger; Roberts, Anna; He, Liang; Li, Longhui; Yu, Qiang

    2016-04-01

    Understanding how the vulnerability of agricultural production to climate change can differ spatially has practical significance to sustainable management of agricultural systems worldwide. Accordingly, this study developed a conceptual framework to assess the agricultural vulnerability of 243 rural counties on the Chinese Loess Plateau. Indicators representing the climate/agriculture interface were selected to describe exposure and sensitivity, while stocks of certain capitals were used to describe adaptive capacity. A vulnerability index for each county was calculated and the spatial distribution was mapped. Results showed that exposure, sensitivity, and adaptive capacity occur independently, with most contributing indicator values concentrated in a narrow range after normalization. Within the 49 most vulnerable counties, which together encompass 81 % of the vulnerability index range, 42 were characterized by high exposure and sensitivity but low adaptive capacity. The most vulnerable area was found to be located in the central northeast-southwest belt of Loess Plateau. Adaptation measures for both ecological restoration and economic development are needed and potential adaptation options need further investigation. PMID:26563383

  20. The Mentally Retarded in Sweden.

    ERIC Educational Resources Information Center

    Grunewald, Karl

    Described are residential and educational services provided for mentally retarded (MC) children and adults in Sweden. Normalization is the focus of the services which make maximum use of mental and physical capacities to reduce the handicap of mental retardation. Described are general principles, and four stages involving development of services…

  1. Mental Retardation.

    ERIC Educational Resources Information Center

    Baumeister, Alfred A., Ed.

    Thirteen papers by different authors consider the application of research findings and theoretical formulations to the practical appraisal and treatment of mental retardation. All suggest methods for shaping appropriate and adaptive behaviors in retarded individuals. The papers include "Definition, Diagnosis, and Classification" by D.W. Brison,…

  2. Mental Retardation.

    ERIC Educational Resources Information Center

    Purpura, Dominick P.; And Others

    Evidence today indicates that the causes of mental retardation are biological, psychological, and social in origin and that a combination of these causes frequently occur in a single individual. Mental retardation is identified clinically by the presence of several signs that include, but are not limited to, a significant impairment of…

  3. Analysing agricultural drought vulnerability at sub-district level through exposure, sensitivity and adaptive capacity based composite index

    NASA Astrophysics Data System (ADS)

    Murthy, C. S.; Laxman, B.; Sesha Sai, M. V. R.; Diwakar, P. G.

    2014-11-01

    Information on agricultural drought vulnerability status of different regions is extremely useful for implementation of long term drought management measures. A quantitative approach for measuring agricultural drought vulnerability at sub-district level was developed and implemented in the current study, which was carried-out in Andhra Pradesh state, India with the data of main cropping season i.e., kharif. The contributing indicators represent exposure, sensitivity and adaptive capacity components of vulnerability and were drawn from weather, soil, crop, irrigation and land holdings related data. After performing data normalisation and variance based weights generation, component wise composite indices were generated. Agricultural Drought Vulnerability Index (ADVI) was generated using the three component indices and beta distribution was fitted to it. Mandals (sub-district level administrative units) of the state were categorised into 5 classes - Less vulnerable, Moderately vulnerable, Vulnerable, Highly vulnerable and Very highly vulnerable. Districts dominant with vulnerable Mandals showed considerably larger variability of detrended yields of principal crops compared to the other districts, thus validating the index based vulnerability status. Current status of agricultural drought vulnerability in the state, based on ADVI, indicated that vulnerable to very highly vulnerable group of Mandals represent 54 % of total Mandals and about 55 % of the agricultural area and 65 % of the rainfed crop area. The variability in the agricultural drought vulnerability at disaggregated level was effectively captured by ADVI. The vulnerability status map is useful for diagnostic analysis and for formulating vulnerability reduction plans.

  4. Hydrological variability and agricultural drainage ditch nutrient mitigation capacity: Inorganic nitrogen

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The application of inorganic nitrogen fertilizers on agricultural landscapes has the potential to generate environmental degradation concerns at fine to coarse scales across the catchment and landscape. Inorganic nitrogen species (nitrate, nitrite, ammonia) are typically associated with subsurface f...

  5. Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agriculture within the United States is varied and produces a large value ($200 billion in 2002) of production across a wide range of plant and animal production systems. Because of this diversity, changes in climate will likely impact agriculture throughout the United States. Climate affects crop, ...

  6. Flame retardants

    NASA Technical Reports Server (NTRS)

    Troitzsch, J.

    1988-01-01

    The use of flame retardants in plastics has grown only slightly in recent years and will probably grow slowly in the future. The reasons for this are slow economic growth and the absence of fundamentally new requirements for future fire prevention. The trends are toward the increasing use of easily handled, dust-free and well-dispersed flame retardant compounds and master batches; there are no spectacular new developments. In the future, questions of smoke evolution, toxicity and corrosiveness of combustion gases will become increasingly important, especially due to new regulations and rising requirements for environmental protection.

  7. Plant growth promotion in cereal and leguminous agricultural important plants: from microorganism capacities to crop production.

    PubMed

    Pérez-Montaño, F; Alías-Villegas, C; Bellogín, R A; del Cerro, P; Espuny, M R; Jiménez-Guerrero, I; López-Baena, F J; Ollero, F J; Cubo, T

    2014-01-01

    Plant growth-promoting rhizobacteria (PGPR) are free-living bacteria which actively colonize plant roots, exerting beneficial effects on plant development. The PGPR may (i) promote the plant growth either by using their own metabolism (solubilizing phosphates, producing hormones or fixing nitrogen) or directly affecting the plant metabolism (increasing the uptake of water and minerals), enhancing root development, increasing the enzymatic activity of the plant or "helping" other beneficial microorganisms to enhance their action on the plants; (ii) or may promote the plant growth by suppressing plant pathogens. These abilities are of great agriculture importance in terms of improving soil fertility and crop yield, thus reducing the negative impact of chemical fertilizers on the environment. The progress in the last decade in using PGPR in a variety of plants (maize, rice, wheat, soybean and bean) along with their mechanism of action are summarized and discussed here. PMID:24144612

  8. Heavy metals retention capacity of a non-conventional sorbent developed from a mixture of industrial and agricultural wastes.

    PubMed

    Agouborde, Lina; Navia, Rodrigo

    2009-08-15

    Zinc and copper removal from aqueous solutions using brine sediments (industrial residue), sawdust (agricultural residue) and the mixture of both materials has been researched through batch and column tests. Brine sediments were found to be mainly constituted by halite and calcite, while its main cations exchangeable were sodium, calcium, magnesium and potassium. In sawdust the main exchangeable cations detected were calcium, magnesium, sodium and potassium. FT-IR spectra of sawdust and brine sediment-sawdust mixture showed that brine sediments produced important changes in carboxylic, alcoholic and phenolic groups present in the sawdust. The maximum zinc adsorption capacity was found to be 4.85, 2.58 and 5.59 mg/g using an adsorbent/solution ratio of 1/40, for brine sediments, sawdust and the mixture, respectively. For copper, the maximum adsorption capacity was found to be 4.69, 2.31 and 4.33 mg/g, using adsorbent/solution ratios of 1/40, for brine sediments, sawdust and the mixture, respectively. Maximum copper adsorption capacity of the mixture, on the contrary to zinc adsorption, was lightly inferior to maximum adsorption capacity obtained in brine sediments. Adsorption isotherms data adjusted better to the Langmuir model. Additionally, columns reached the saturation point at 690 min for zinc and 360 min for copper. The main mechanism involved in the removal of both metals may be the ionic exchange between sodium and calcium ions present in brine sediments and H(+) present in functional groups of sawdust. The use of brine sediments, sawdust and their mixture, presents an interesting option both, for wastewater decontamination (as a possible non-conventional sorbent for the removal of heavy metals) and as a waste recycling option. PMID:19188023

  9. Can earthworms survive fire retardants?

    USGS Publications Warehouse

    Beyer, W.N.; Olson, A.

    1996-01-01

    Most common fire retardants are foams or are similar to common agricultural fertilizers, such as ammonium sulfate and ammonium phosphate. Although fire retardants are widely applied to soils, we lack basic information about their toxicities to soil organisms. We measured the toxicity of five fire retardants (Firetrol LCG-R, Firetrol GTS-R, Silv-Ex Foam Concentrate, Phos-chek D-75, and Phos-chek WD-881) to earthworms using the pesticide toxicity test developed for earthworms by the European Economic Community. None was lethal at 1,000 ppm in the soil, which was suggested as a relatively high exposure under normal applications. We concluded that the fire retardants tested are relatively nontoxic to soil organisms compared with other environmental chemicals and that they probably do not reduce earthworm populations when applied under usual firefighting conditions.

  10. Changes in agriculture and abundance of snow geese affect carrying capacity of sandhill cranes in Nebraska

    USGS Publications Warehouse

    Pearse, A.T.; Krapu, G.L.; Brandt, D.A.; Kinzel, P.J.

    2010-01-01

    The central Platte River valley (CPRV) in Nebraska, USA, is a key spring-staging area for approximately 80 of the midcontinent population of sandhill cranes (Grus canadensis; hereafter cranes). Evidence that staging cranes acquired less lipid reserves during the 1990s compared to the late 1970s and increases in use of the CPRV by snow geese (Chen caerulescens) prompted us to investigate availability of waste corn and quantify spatial and temporal patterns of crane and waterfowl use of the region. We developed a predictive model to assess impacts of changes in availability of corn and snow goose abundance under past, present, and potential future conditions. Over a hypothetical 60-day staging period, predicted energy demand of cranes and waterfowl increased 87 between the late 1970s and 19982007, primarily because peak abundances of snow geese increased by 650,000 and cranes by 110,000. Compared to spring 1979, corn available when cranes arrived was 20 less in 1998 and 68 less in 1999; consequently, the area of cornfields required to meet crane needs increased from 14,464 ha in 1979 to 32,751 ha in 1998 and 90,559 ha in 1999. Using a pooled estimate of 88 kg/ha from springs 19981999 and 20052007, the area of cornfields needed to supply food requirements of cranes and waterfowl increased to 65,587 ha and was greatest in the eastern region of the CPRV, where an estimated 54 of cranes, 47 of Canada geese (Branta canadensis), 45 of greater white-fronted geese (Anser albifrons), and 46 of snow geese occurred during ground surveys. We estimated that a future reduction of 25 in available corn or cornfields would increase daily foraging flight distances of cranes by 2738. Crane use and ability of cranes to store lipid reserves in the CPRV could be reduced substantially if flight distance required to locate adequate corn exceeded a physiological maximum distance cranes could fly in search of food. Options to increase carrying capacity for cranes include increasing

  11. Modeling human impact in the past: a dynamic soil model as a step towards quantifying agricultural carrying capacity

    NASA Astrophysics Data System (ADS)

    Van Loo, Maarten; Verstraeten, Gert

    2015-04-01

    to come up with adaptive water management techniques, or relocate their agricultural activities in order to reach the same level of crop yields as before land degradation. In order to validate this human-environment coupling however, a more detailed archaeobotanical analysis is required. Nevertheless, these novel methods of quantifying agricultural carrying capacity should allow to nuance traditional views of direct links between landscape degradation and societal crisis, and open the debate on the higher resilience of these societies in the past.

  12. Introduction to Mental Retardation

    ERIC Educational Resources Information Center

    Arc of the United States, 2004

    2004-01-01

    The purpose of this document is to define mental retardation and answer questions related to this topic. According to the American Association on Mental Retardation (AAMR), mental retardation is a disability that occurs before age 18. It is characterized by significant limitations in intellectual functioning and adaptive behaviors as expressed in…

  13. Estimating soil water-holding capacities by linking the Food and Agriculture Organization Soil map of the world with global pedon databases and continuous pedotransfer functions

    NASA Astrophysics Data System (ADS)

    Reynolds, C. A.; Jackson, T. J.; Rawls, W. J.

    2000-12-01

    Spatial soil water-holding capacities were estimated for the Food and Agriculture Organization (FAO) digital Soil Map of the World (SMW) by employing continuous pedotransfer functions (PTF) within global pedon databases and linking these results to the SMW. The procedure first estimated representative soil properties for the FAO soil units by statistical analyses and taxotransfer depth algorithms [Food and Agriculture Organization (FAO), 1996]. The representative soil properties estimated for two layers of depths (0-30 and 30-100 cm) included particle-size distribution, dominant soil texture, organic carbon content, coarse fragments, bulk density, and porosity. After representative soil properties for the FAO soil units were estimated, these values were substituted into three different pedotransfer functions (PTF) models by Rawls et al. [1982], Saxton et al. [1986], and Batjes [1996a]. The Saxton PTF model was finally selected to calculate available water content because it only required particle-size distribution data and results closely agreed with the Rawls and Batjes PTF models that used both particle-size distribution and organic matter data. Soil water-holding capacities were then estimated by multiplying the available water content by the soil layer thickness and integrating over an effective crop root depth of 1 m or less (i.e., encountered shallow impermeable layers) and another soil depth data layer of 2.5 m or less.

  14. THE MENTALLY RETARDED.

    ERIC Educational Resources Information Center

    JORDAN, THOMAS E.

    THIS BOOK PROVIDES A GUIDE TO THE BASIC CONCEPTS AND ISSUES IN THE FIELD OF MENTAL RETARDATION. THERE ARE MANY SOURCES OR CAUSES OF MENTAL RETARDATION AND THE FOLLOWING TYPES ARE EXPLAINED--(1) GENETIC OR CHEMICAL DISORDERS, (2) BIRTH TRAUMA, (3) SUBSEQUENT ACCIDENTS OR DISEASE, AND (4) ENVIRONMENTAL INFLUENCES. IT IS NOTED THAT MOST CASES INVOLVE…

  15. Mental Retardation in Perspective.

    ERIC Educational Resources Information Center

    Horvath, Michael; And Others

    This monograph presents a general introduction to the history, classification, and characteristics of mental retardation. It begins with a discussion of the history of mental retardation from ancient Greece and Rome to the present. The beginnings of special education are traced to the early 19th century in Europe. Major influences in treatment of…

  16. Vignettes in Mental Retardation.

    ERIC Educational Resources Information Center

    Crissey, Marie Skodak

    1983-01-01

    The use of the family history chart and the "Binet-Simon Scale" to study mental retardation in the early 20th century are considered, along with the implications of this practice. With the thesis that mental retardation was primarily familial and hereditary, limiting reproduction and segregation were viewed as appropriate approaches. (SEW)

  17. Brominated Flame Retardants

    EPA Science Inventory

    Brominated flame retardants (BFRs) belong to a large class of compounds known as organohalogens. BFRs are currently the largest marketed flame retardant group due to their high performance efficiency and low cost. In the commercial market, more than 75 different BFRs are recogniz...

  18. Consanguinity and mental retardation.

    PubMed

    Madhavan, T; Narayan, J

    1991-04-01

    Consanguinity among parents as a cause of mental retardation in their children is debatable. The present study was conducted to find out the effect of consanguinity on mental retardation where the causative factor is not established. A total of 517 mentally retarded persons and their families were studied out of which 160 were born of consanguineous marriage and 357 were of non-consanguineous marriage. The results indicated that, when there is a history of mental retardation in the family and if the parents are consanguineously married, the risk of mental retardation in the offspring is significantly high (chi 2 = 11.52; P less than 0.001). Among the consanguineously married families, the blood relationship of uncle-niece seems to have the highest risk of affecting the offsprings. The implications are discussed in detail. PMID:2072392

  19. Fire-Retardant, Decorative Inks

    NASA Technical Reports Server (NTRS)

    Kourtides, D.; Nir, Z.; Mikroyannidis, J.

    1987-01-01

    Effectiveness of fire-retardant additives evaluated. Fire retardance of decorative acrylic printing inks for aircraft interiors enhanced by certain commercial and experimental fire-retardant additives, according to study.

  20. Preventing Mental Retardation

    PubMed Central

    Fotheringham, John B.

    1974-01-01

    Influences producing mental retardation can be divided into three categories: inherited factors, health problems and social-emotional influences. This article outlines steps which can be taken to reduce the first two categories, both pre and postnatally. PMID:20469133

  1. Fire retardant polyisocyanurate foam

    NASA Technical Reports Server (NTRS)

    Riccitiello, S. R.; Parker, J. A.

    1972-01-01

    Fire retardant properties of low density polymer foam are increased. Foam has pendant nitrile groups which form thermally-stable heterocyclic structures at temperature below degradation temperature of urethane linkages.

  2. Litter-Spinning Retarders

    NASA Technical Reports Server (NTRS)

    Wilson, John C.

    1995-01-01

    Aerodynamic plates stop litter from spinning during hoisting by helicopter. Features of proposed litter-spinning retarders include convenience of deployment and independence from ground restraint. Retarder plate(s) folded flat against bottom of litter during storage or while litter is loaded. Plate(s) held in storage position by latch that releases manually or automatically as litter is hoisted. Upon release, springs move plates into deployed position.

  3. Reclaimed water as a main resource to enhance the adaptive capacity to climate change in semi-arid Mediterranean agricultural areas using Earth Observation products

    NASA Astrophysics Data System (ADS)

    Pavia Rico, Ana; Lopez-Baeza, Ernesto; Matieu, Pierre-Philippe; Hernandez Sancho, Francesc; Loarte, Edwin

    Lack of water is being a big problem in semi-arid areas to make agricultural profits. Most of Mediterranean countries like Spain, Italy, Greece or Cyprus and other countries like Morocco, the Arab United Emirates, South-American countries or China are starting to reuse wastewater as adaptation to climate change water scarcity. Drought areas are nowadays increasing, thus making fertile areas unproductive. For this reason, the European trend is to work on reusing wastewater as a solution to water scarcity in agriculture. Moreover, since population is growing fast, wastewater production is increasing as well as drinkable water demand, thus making reclaimed water as the water guarantee for irrigation and better agricultural management. This work represents a preliminary initiative to check, analyse and monitor the land by using remote sensing techniques to identify and determine the potential lands that used to be productive in the past, are now abandoned, and we want to recuperate to obtain socio-economic benefits. On top of this, this initiative will clearly enhance the adaption capacity of rural/agricultural lands to climate change. Alternatively to reclaimed water, greenhouses, desalination plants or transboarding water do not really eliminate the problem but only offer a temporary solution, make spending plenty of money and always provoking irreversible damages to the environment. The pilot area to first develop this research is the Valencia and Murcia Autonomous Communities located in the Spanish Mediterranean Coastline. An added value of this work will be to develop a methodology transferable to other potential countries with similar climatic characteristics and difficulties for irrigation, by using remote sensing methods and techniques. The remote sensing products obtained provide full information about the current state of the potential lands to grow crops. Potential areas are then being selected to carry out a socio-economic analysis leading to: (i

  4. Surface retention capacity calculation

    NASA Astrophysics Data System (ADS)

    David, Vaclav; Dostal, Tomas

    2010-05-01

    Flood wave transformation in the floodplain is the phenomenon which is researched within interdisciplinary project NIVA - Water Retention in Floodplains and Possibilities of Retention Capacity Increase. The project focuses on broad range of floodplain ecosystem services and mitigation of flooding is one of them. Despite main influence on flood wave transformation is due to flow retardation, retention in surface depressions within floodplain has been analyzed to get better overview of whole transformation process. Detail digital relief model (DRM) has been used for given purposes to be able to analyze terrain depressions volumes. The model was developed with use of stereophotogrammetric evaluation of airborne images with high resolution of 10 cm. It was essential for purposes of presented analysis not to apply pit removal routines which are often used for generation of DRM for hydrological modelling purposes. First, the methodology of analysis was prepared and tested on artificial surface. This surface was created using random raster generation, filtration and resampling with final resolution of 1000 x 1000 units and height of maximum 10 units above datum. The methodology itself is based on analysis of areas inundated by water at different elevation levels. Volume is than calculated for each depression using extraction of terrain elevations under corresponding water level. The method was then applied on the area of Lužnice River floodplain section to assess retention capacity of real floodplain. The floodplain had to be cut into sections perpendicular to main river orientation for analyses as the method was tested for square shaped area without any significant inclination. Results obtained by mentioned analysis are presented in this paper. Acknowledgement Presented research was accomplished within national project NIVA - Water Retention in Floodplains and Possibilities of Retention Capacity Increase, nr. QH82078. The project is funded by Ministry of Agriculture of

  5. Vignettes in Mental Retardation.

    ERIC Educational Resources Information Center

    Crissey, Marie Skodak

    1983-01-01

    Described are turn-of-the-century (1900) efforts of E. Johnstone, Vineland Training School for the mentally retarded; H. Goddard, psychologist (also at Vineland); and C. Davenport, Carnegie Foundation biological laboratory, Coldspring Harbor; to identify the roles of genetic heredity and environmental impact, and thus to eradicate or ameliorate…

  6. Epidemiology of Mental Retardation.

    ERIC Educational Resources Information Center

    Heber, Rick

    Prevalence data on mental retardation is presented including international estimates on general prevalence, age directions, geographical variations within the United States, racial and ethnic variations, economic class distributions, family variations, and population distribution in institutions. Statistics are also provided in areas of specific…

  7. Monkey Retardate Learning Analysis

    ERIC Educational Resources Information Center

    Chamove, A. S.; Molinaro, T. J.

    1978-01-01

    Seven rhesus monkeys reared on diets high in phenylalanine to induce phenylketonuria (PKU--a metabolic disorder associated with mental retardation if untreated) were compared with normal, pair-fed, and younger controls; frontal brain-lesioned monkeys; and those raised on high-tryptophan diets in three object discrimination tasks. (Author)

  8. Flame retardant spandex type polyurethanes

    NASA Technical Reports Server (NTRS)

    Howarth, J. T.; Sheth, S.; Sidman, K. R.; Massucco, A. A. (Inventor)

    1978-01-01

    Flame retardant elastomeric compositions were developed, comprised of: (1) spandex type polyurethane having incorporated into the polymer chain, halogen containing polyols; (2) conventional spandex type polyurethanes in physical admixture flame retardant additives; and (3) fluoroelastomeric resins in physical admixture with flame retardant additives. Methods of preparing fibers of the flame retardant elastomeric materials are presented and articles of manufacture comprised of the elastomeric materials are mentioned.

  9. Mental Retardation, Selected Conference Papers.

    ERIC Educational Resources Information Center

    Scheerenberger, R.C., Ed.

    A compilation of selected papers includes the following: comprehensive diagnostic services; pediatric aspects of diagnosis; psychological evaluation of the severely retarded; use of social competency devices; diagnosis of the adult retarded; programing for the severely retarded; nursery school experiences for the trainable; a practical approach to…

  10. Teaching the Educable Mentally Retarded.

    ERIC Educational Resources Information Center

    Love, Harold D.

    The text discusses the behavior, evaluation, and education of mentally retarded children. Harold D. Love presents an overview of the retarded, a description of intelligence and personality tests, and a historical survey of retardation; Virginia Cantrell reviews the educational philosophies and methods of Itard, Seguin, and Montessori. Shirley K.…

  11. Fire and smoke retardants

    NASA Astrophysics Data System (ADS)

    Drews, M. J.

    Despite a reduction in Federal regulatory activity, research concerned with flame retardancy and smoke suppression in the private sector appears to be increasing. This trend seem related to the increased utilization of plastics for end uses which traditionally have employed metal or wood products. As a result, new markets have appeared for thermally stable and fire resistance thermoplastic materials, and this in turn has spurred research and development activity. In addition, public awareness of the dangers associated with fire has increased as a result of several highly publicized hotel and restaurant fires within the past two years. The consumers recognition of flammability characteristics as important materials property considerations has increased. The current status of fire and smoke retardant chemistry and research are summarized.

  12. Flame Retardant Epoxy Resins

    NASA Technical Reports Server (NTRS)

    Thompson, C. M.; Smith, J. G., Jr.; Connell, J. W.; Hergenrother, P. M.; Lyon, R. E.

    2004-01-01

    As part of a program to develop fire resistant exterior composite structures for future subsonic commercial aircraft, flame retardant epoxy resins are under investigation. Epoxies and their curing agents (aromatic diamines) containing phosphorus were synthesized and used to prepare epoxy formulations. Phosphorus was incorporated within the backbone of the epoxy resin and not used as an additive. The resulting cured epoxies were characterized by thermogravimetric analysis, propane torch test, elemental analysis and microscale combustion calorimetry. Several formulations showed excellent flame retardation with phosphorous contents as low as 1.5% by weight. The fracture toughness of plaques of several cured formulations was determined on single-edge notched bend specimens. The chemistry and properties of these new epoxy formulations are discussed.

  13. Comments on "Brain Size and Cerebral Glucose Metabolic Rate in Nonspecific Mental Retardation and Down Syndrome."

    ERIC Educational Resources Information Center

    Willerman, Lee; Schultz, Robert T.

    1995-01-01

    The relationship between mental retardation and brain size is discussed. Research suggests that a common path for many otherwise idiopathic mild retardation cases (genetic or environmental) could be small brain size, indicating reduced information processing capacity. Suggestions are made for further research on neuron number. (SLD)

  14. Aerobic Fitness for the Severely and Profoundly Mentally Retarded.

    ERIC Educational Resources Information Center

    Bauer, Dan

    1981-01-01

    The booklet discusses the aerobic fitness capacities of severely/profoundly retarded students and discusses approaches for improving their fitness. An initial section describes a method for determining the student's present fitness level on the basis of computations of height, weight, blood pressure, resting pulse, and Barach Index and Crampton…

  15. Educable Mentally Retarded, Level I.

    ERIC Educational Resources Information Center

    Suo, Minnie Alice; Willemin, Helen

    Intended for teachers of special classes of educable mentally retarded children aged 6 to 8 (mental age = 3.5 to 4.9), the guide stresses skills necessary to the development of physical, personal and social, and vocational competency. An introduction defines philosophy and goals, outlines the educable mentally retarded program and the readiness…

  16. Flame retarded asphalt blend composition

    SciTech Connect

    Walters, R.B.

    1987-04-21

    This patent describes a flame retarded asphalt composition consisting essentially of a blend of: (a) thermoplastic elastomer modified bitumen; (b) 20-30 wt % inert filler; (c) 1-20 wt % of at least one halogenated flame retardant; and (d) 1-5 wt % of at least one inorganic phosphorus containing compound selected from the group consisting of ammonium phosphate compounds and red phosphorus.

  17. THE PATHOLOGY OF MENTAL RETARDATION.

    ERIC Educational Resources Information Center

    CROME, L.; STERN, J.

    DATA FROM RECENT COMPREHENSIVE STUDIES OF THE PATHOLOGY OF MENTAL RETARDATION ARE ASSEMBLED, INCLUDING MATERIAL ON ETIOLOGY, MORPHOLOGY, BIOCHEMISTRY, AND LABORATORY DIAGNOSIS. AREAS COVERED ARE (1) GENETIC CAUSES OF MENTAL RETARDATION, (2) DISORDERS OF GESTATION, (3) BIRTH INJURY, (4) GENERAL CONSIDERATIONS OF POSTNATAL CAUSES OF MENTAL…

  18. Neurotoxicity of brominated flame retardants

    EPA Science Inventory

    Polybrominated diphenyl ethers (PBDEs) have been commonly used as commercial flame retardants in a variety of products including plastics and textiles. Despite their decreasing usage worldwide, congeners continue to accumulate in the environment, including soil, dust, food, anima...

  19. INTRODUCTION TO BROMINATED FLAME RETARDANTS

    EPA Science Inventory

    Brominated flame retardants (BFRs) are a large and diverse class of major industrial products used to provide fire safety. Tetrabromobisphenol A (TBBPA), Hexabromocylocodecane (HBCD), and Polybrominated Diphenyl Ethers (PBDEs) are the major commercial compounds. TBBPA is a react...

  20. Intumescent Coatings as Fire Retardants

    NASA Technical Reports Server (NTRS)

    Fish, R. H.; Fohlen, G. M.; Parker, J. A.; Sawko, P. M.

    1970-01-01

    Fire-retardant paint, when activated by the heat of fire, reacts to form a thick, low-density, polymeric coating or char layer. Water vapor and sulphur dioxide are released during the intumescent reaction.

  1. Understanding and Teaching the Dependent Retarded Child.

    ERIC Educational Resources Information Center

    Rosenzweig, Louis E.; Long, Julia

    Levels of mental retardation and school admission procedures for the dependent retarded (IQ's 30 to 50) are reviewed. Goals for all retarded and the application of goals to the dependent retarded are considered. Plans and procedures for both teacher and child activities along with suggestions for audiovisual and other materials are provided in the…

  2. The Mentally Retarded Offender: Annotated Bibliography.

    ERIC Educational Resources Information Center

    Schilit, Jeffrey; And Others

    An annotated bibliography of approximately 150 books and articles on the mentally retarded offender as well as 30 nonannotated entries are provided. Topics covered include such areas as characteristics of mentally retarded delinquents, rehabilitation of the retarded offender, community services for retarded persons, rights of the mentally…

  3. 7 CFR 983.27 - Proprietary capacity.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Proprietary capacity. 983.27 Section 983.27 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN...

  4. Toward a Sustainable Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Future trends in population growth, energy use, climate change, and globalization will challenge agriculturists to develop innovative production systems that are highly productive and environmentally sound. Furthermore, future agricultural production systems must possess an inherent capacity to adap...

  5. Impacts of Watershed Characteristics and Crop Rotations on Winter Cover Crop Nitrate-Nitrogen Uptake Capacity within Agricultural Watersheds in the Chesapeake Bay Region.

    PubMed

    Lee, Sangchul; Yeo, In-Young; Sadeghi, Ali M; McCarty, Gregory W; Hively, W Dean; Lang, Megan W

    2016-01-01

    The adoption rate of winter cover crops (WCCs) as an effective conservation management practice to help reduce agricultural nutrient loads in the Chesapeake Bay (CB) is increasing. However, the WCC potential for water quality improvement has not been fully realized at the watershed scale. This study was conducted to evaluate the long-term impact of WCCs on hydrology and NO3-N loads in two adjacent watersheds and to identify key management factors that affect the effectiveness of WCCs using the Soil and Water Assessment Tool (SWAT) and statistical methods. Simulation results indicated that WCCs are effective for reducing NO3-N loads and their performance varied based on planting date, species, soil characteristics, and crop rotations. Early-planted WCCs outperformed late-planted WCCs on the reduction of NO3-N loads and early-planted rye (RE) reduced NO3-N loads by ~49.3% compared to the baseline (no WCC). The WCCs were more effective in a watershed dominated by well-drained soils with increased reductions in NO3-N fluxes of ~2.5 kg N·ha-1 delivered to streams and ~10.1 kg N·ha-1 leached into groundwater compared to poorly-drained soils. Well-drained agricultural lands had higher transport of NO3-N in the soil profile and groundwater due to increased N leaching. Poorly-drained agricultural lands had lower NO3-N due to extensive drainage ditches and anaerobic soil conditions promoting denitrification. The performance of WCCs varied by crop rotations (i.e., continuous corn and corn-soybean), with increased N uptake following soybean crops due to the increased soil mineral N availability by mineralization of soybean residue compared to corn residue. The WCCs can reduce N leaching where baseline NO3-N loads are high in well-drained soils and/or when residual and mineralized N availability is high due to the cropping practices. The findings suggested that WCC implementation plans should be established in watersheds according to local edaphic and agronomic

  6. Impacts of Watershed Characteristics and Crop Rotations on Winter Cover Crop Nitrate-Nitrogen Uptake Capacity within Agricultural Watersheds in the Chesapeake Bay Region

    PubMed Central

    Lee, Sangchul; Yeo, In-Young; Sadeghi, Ali M.; McCarty, Gregory W.; Hively, W. Dean; Lang, Megan W.

    2016-01-01

    The adoption rate of winter cover crops (WCCs) as an effective conservation management practice to help reduce agricultural nutrient loads in the Chesapeake Bay (CB) is increasing. However, the WCC potential for water quality improvement has not been fully realized at the watershed scale. This study was conducted to evaluate the long-term impact of WCCs on hydrology and NO3-N loads in two adjacent watersheds and to identify key management factors that affect the effectiveness of WCCs using the Soil and Water Assessment Tool (SWAT) and statistical methods. Simulation results indicated that WCCs are effective for reducing NO3-N loads and their performance varied based on planting date, species, soil characteristics, and crop rotations. Early-planted WCCs outperformed late-planted WCCs on the reduction of NO3-N loads and early-planted rye (RE) reduced NO3-N loads by ~49.3% compared to the baseline (no WCC). The WCCs were more effective in a watershed dominated by well-drained soils with increased reductions in NO3-N fluxes of ~2.5 kg N·ha-1 delivered to streams and ~10.1 kg N·ha-1 leached into groundwater compared to poorly-drained soils. Well-drained agricultural lands had higher transport of NO3-N in the soil profile and groundwater due to increased N leaching. Poorly-drained agricultural lands had lower NO3-N due to extensive drainage ditches and anaerobic soil conditions promoting denitrification. The performance of WCCs varied by crop rotations (i.e., continuous corn and corn-soybean), with increased N uptake following soybean crops due to the increased soil mineral N availability by mineralization of soybean residue compared to corn residue. The WCCs can reduce N leaching where baseline NO3-N loads are high in well-drained soils and/or when residual and mineralized N availability is high due to the cropping practices. The findings suggested that WCC implementation plans should be established in watersheds according to local edaphic and agronomic

  7. Development of novel fire retardants

    NASA Astrophysics Data System (ADS)

    Sigdel Regmi, Bhawani

    Numerous candidate environmentally-friendly, water-soluble, and non-toxic fire retardants and fire-retarding processes were developed and tested according to the ASTM D 3801 flammability test and the NRL 8093 smoldering test. Flame retardants that passed the ASTM D 3801 flammability test with the highest V0 rating were boron esters of guanidinium hydroxycarboxylate (glycolate, salicylate and dihydroxybenzoate), zinc gluconate borate ester, and cyanoacetate salts of organic bases (melaminium, cyanoguanidinium, and ammonium). Several related compounds pass this test with the lower V1 rating. Two new synergistic flame and smolder retarding systems were developed in which the individual components were incapable of preventing flame spread or smoldering but in combination they were highly effective. These systems were mixtures of either guanyl urea phosphate and boric acid or beta-alanine and boric acid. Compositions leading to the maximum solubility of boron oxides in the ammonium borate/sodium borate system were determined at several temperatures and the formation of mixtures exceeding 50% dissolved boric acid equivalents was found possible. These mixtures were applied as flame retardants for wood, paper, and carbon-loaded polyurethane foam both directly and indirectly by in situ precipitation of boric acid or zinc borate by appropriate chemical treatments. These all passed the ASTM flammability test with V0 rating. The performance of the boron-containing fire retardants is likely due to deposition of protective boron oxide coatings at elevated temperatures except where phosphate was present and a protective boron phosphate was deposited instead. In all cases, the oxidation of carbonaceous char was strongly inhibited. The hydroxycarboxylate groups generally formed intumescent chars during thermal decomposition that also contributed to fire retardancy.

  8. In vitro estrogenicity of polybrominated flame retardants.

    PubMed

    Nakari, Tarja; Pessala, Piia

    2005-09-10

    Estrogenicity of five brominated flame retardants (BFRs), namely BDE-47, BDE-99, BDE-205, PBB-153 and technical Firemaster BP-6, were assessed by in vitro assays developed to detect chemicals with estrogenic properties. Recombinant yeast cells containing a human estrogen receptor gene failed to give any response to the chemicals tested. However, the positive control compound, estradiol-17beta, showed that the yeast cell assays had worked properly. The freshly separated fish hepatocyte assay based on the synthesis and secretion of vitellogenin from the isolated liver cells produced a clear dose-response curve in the presence of all tested flame retardants except Firemaster BP-6. The toxicity of the BFRs was detected by determining the cell ethoxyresorufin-O-deethylase activity (EROD). The BFRs tested induced hepatic EROD activity at low test concentrations, but started to inhibit activity at higher concentrations. The decreased detoxification capacity of the hepatocytes resulted in a decrease in the vitellogenin production of the cells. The capability of in vitro assays to detect estrogenic properties of chemicals seems to vary. Thus, further work is needed to understand the mechanisms responsible for these reactions. PMID:16024102

  9. New dispenser types for integrated pest management of agriculturally significant insect pests: an algorithm with specialized searching capacity in electronic data bases.

    PubMed

    Hummel, H E; Eisinger, M T; Hein, D F; Breuer, M; Schmid, S; Leithold, G

    2012-01-01

    Pheromone effects discovered some 130 years, but scientifically defined just half a century ago, are a great bonus for basic and applied biology. Specifically, pest management efforts have been advanced in many insect orders, either for purposes or monitoring, mass trapping, or for mating disruption. Finding and applying a new search algorithm, nearly 20,000 entries in the pheromone literature have been counted, a number much higher than originally anticipated. This compilation contains identified and thus synthesizable structures for all major orders of insects. Among them are hundreds of agriculturally significant insect pests whose aggregated damages and costly control measures range in the multibillions of dollars annually. Unfortunately, and despite a lot of effort within the international entomological scene, the number of efficient and cheap engineering solutions for dispensing pheromones under variable field conditions is uncomfortably lagging behind. Some innovative approaches are cited from the relevant literature in an attempt to rectify this situation. Recently, specifically designed electrospun organic nanofibers offer a lot of promise. With their use, the mating communication of vineyard insects like Lobesia botrana (Lep.: Tortricidae) can be disrupted for periods of seven weeks. PMID:23885431

  10. Auto cannibalism in mental retardation.

    PubMed

    Verma, Rohit; Mina, Shaily; Sachdeva, Ankur

    2014-01-01

    Mental retardation (MR) deems an individual more vulnerable to psychopathologies. The individual may develop an array of behavioral disturbances manifesting themselves in the form of aggressive and destructive conduct, violent fits of anger, stereotyped, or self-injuring behavior. Self-injurious behavior is heterogeneous in nature ranging from mild to severe variant. We report a case of a 7-year-old boy with MR with self-inflicted severe oral injuries of cannibalistic nature presenting as cleft lip and palate. A more extensive research is needed on the problem behaviors in mentally retarded patients for early detection and effective and timely intervention leading to a better outcome. PMID:24891909

  11. Agriculture Education. Agriculture Structures.

    ERIC Educational Resources Information Center

    Stuttgart Public Schools, AR.

    This curriculum guide is designed for group instruction of secondary agricultural education students enrolled in one or two semester-long courses in agriculture structures. The guide presents units of study in the following areas: (1) shop safety, (2) identification and general use of hand tools, (3) power tools, (4) carpentry, (5) blueprint…

  12. Mobilizing local innovation capacity through a simulation game in a participatory research project on agricultural innovation in El Brahmi irrigation scheme (Tunisia).

    NASA Astrophysics Data System (ADS)

    Dolinska, Aleksandra; d'Aquino, Patrick; Imache, Amar; Dionnet, Mathieu; Rougier, Jean-Emmanuel

    2015-04-01

    In the framework of the European Union and African Union cooperative research to increase Food production in irrigated farming systems in Africa (EAU4Food project) we conducted a participatory research on the possible innovative practices to increase production of dairy farms in the irrigation scheme El Brahmi in Tunisia in the face of changing economic, political and environmental conditions. Our aim was to find effective research method to stimulate farmers' participation in the innovation process. Although the capacities of farmers in producing knowledge and in innovating are recognized and the shift from the linear model of technology transfer towards more participatory approaches to innovation is postulated, in which the role of researchers changes from providing solutions towards supporting farmers in finding their own solutions, in practice, the position of farmers in shaping innovation practice and process remains weak. After a series of participatory workshops and in-depth interviews with the actors of the local innovation system we developed and tested a simple open simulation game Laitconomie for farmers. The game proved to be effective in increasing our understanding of the system as the farmers were adding new elements and rules while playing, and in mobilizing farmers' knowledge (including tacit knowledge) in the simulated innovation process. The result reported by the participants was learning how to improve farm management, soil fertility management and cow nutrition practices. Some of the participants used the game as a decision support tool. While our game and its scope were modest and mobilized only two types of players (farmers and extension agent), open simulation proved to be a useful tool to analyze a local innovation system. Designing similar type of tools that would mobilize more diverse players and hence have a larger scope can be imagined.

  13. Idiots Savants: Retarded and Gifted.

    ERIC Educational Resources Information Center

    Yewchuk, Carolyn

    The paper reviews the paradoxical nature of idiots savants, persons who, although retarded, have exceptional skills in certain areas. Various explanations for the phenomenon are discussed, such as a specific genetic endowment, a specialized compensatory response to general intellectual deficiency, and possession of an eidetic memory. Various…

  14. Books for Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Cincinnati - Hamilton County Public Library, OH.

    Presented is an annotated list of approximately 300 books for educable (EMR) and trainable mentally retarded (TMR) children and adolescents, 6 to 15 years of age. Books are arranged in the following groups for EMR students: Group I contains approximately 84 entries for students 6 to 9 years of age; Group II lists approximately 81 stories and books…

  15. Transportation and the Mentally Retarded.

    ERIC Educational Resources Information Center

    President's Committee on Mental Retardation, Washington, DC.

    Reported were the results of a contract that involved identification, description, and categorization of the nature of transportation problems for the mentally retarded by means of analysis of existing studies, two surveys, and an inventory of specialized programs and systems operating in the United States. One major problem was found to be…

  16. Detection of Malingered Mental Retardation

    ERIC Educational Resources Information Center

    Shandera, Anne L.; Berry, David T. R.; Clark, Jessica A.; Schipper, Lindsey J.; Graue, Lili O.; Harp, Jordan P.

    2010-01-01

    In a cross-validation of results from L. O. Graue et al. (2007), standard psychological assessment instruments, as well as tests of neurocognitive and psychiatric feigning, were administered under standard instructions to 24 participants diagnosed with mild mental retardation (MR) and 10 demographically matched community volunteers (CVH). A 2nd…

  17. Toilet Training the Retarded Child.

    ERIC Educational Resources Information Center

    Schwartz, Jeffrey K.

    The booklet offers guidelines in both Spanish and English to parents who are toilet training a mentally retarded child. The toilet training process is broken down into tasks that the child must learn, and the importance of positive reinforcement for each successfully accomplished task is emphasized. It is recommended that parents keep charts…

  18. HANDBOOK OF MENTAL RETARDATION SYNDROMES.

    ERIC Educational Resources Information Center

    CARTER, CHARLES H.

    THE CLINICAL SYNDROMES WHICH CONTRIBUTE TO THE PRODUCTION OF MENTAL RETARDATION ARE DESCRIBED BY SIGNS, SYMPTOMS, AND ETIOLOGY. SYNDROMES TREATED ARE (1) PRENATAL AND POSTNATAL INFECTIONS, (2) PRENATAL INTOXICATION AND ALLERGIC REACTIONS, (3) PRENATAL TRAUMA, PHYSICAL AGENTS, OR INTOXICATION, (4) BIRTH INJURIES, (5) POSTNATAL POISONS AND ALLERGIC…

  19. Dichotic Stimulation and Mental Retardation.

    ERIC Educational Resources Information Center

    Mosley, James L.; Virbancic, Mirna I.

    1990-01-01

    This paper reviews literature on the use of dichotic stimulation in individuals with mental retardation, and examines how noninvasive dichotic stimulation relates to hemisphere lateralization. Common findings are discussed concerning direction and magnitude of ear asymmetries, patterns of intrusion errors, and speech lateralization of Down…

  20. Genetic Counseling in Mental Retardation.

    ERIC Educational Resources Information Center

    Bowen, Peter

    The task of the genetic counselor who identifies genetic causes of mental retardation and assists families to understand risk of recurrence is described. Considered are chromosomal genetic disorders such as Down's syndrome, inherited disorders such as Tay-Sachs disease, identification by testing the amniotic fluid cells (amniocentresis) in time…

  1. Fire-retardant epoxy polymers

    NASA Technical Reports Server (NTRS)

    Akawie, R. I.; Bilow, N.; Giants, T. W.

    1978-01-01

    Phosphorus atoms in molecular structure of epoxies make them fire-retardant without degrading their adhesive strength. Moreover, polymers are transparent, unlike compounds that contain arsenic or other inorganics. They have been used to bond polyvinylfluoride and polyether sulfone films onto polyimide glass laminates.

  2. Mental Retardation: Diagnosis and Treatment.

    ERIC Educational Resources Information Center

    Poser, Charles M., Ed.

    A collection of writings by 17 authors, the text includes the following discussions: general principles of diagnosis and management of mental retardation, neurologic evaluation of the infant and child, psychological evaluation, educational information, and treatment of pseudoretardation, communicative disorders, and metabolic and endocrine causes.…

  3. VOCATIONAL PROGRAMMING FOR THE RETARDED.

    ERIC Educational Resources Information Center

    BRICE, CARL R.

    A SUCCESSFUL PROGRAM OF VOCATIONAL TRAINING FOR THE MENTALLY RETARDED IS BEING CARRIED ON AT THE MADISON (WISCONSIN) VOCATIONAL, TECHNICAL, AND ADULT SCHOOLS. THE TRAINEES MUST BE 17 YEARS OR OLDER, WITH AN IQ OF APPROXIMATELY 50-75. THE SCHOOL OF QUANTITY FOOD PREPARATION CONTRIBUTES GREATLY TO THIS PROGRAM, FOR WHILE IT MAINLY TEACHES CHEFS AND…

  4. The Supreme Court V. Retarded Children.

    ERIC Educational Resources Information Center

    Biklen, Douglas

    1981-01-01

    The author examines the Supreme Court decisions regarding the rights of retarded children not to be institutionalized and rights of retarded people to have aggressive medical treatment that will help prolong their lives. (SB)

  5. Endocrine Disorders Associated with Mental Retardation

    PubMed Central

    Reddy, Churku Mohan

    1980-01-01

    Endocrine disorders associated with mental retardation are described in relation to clinical characteristics, pathogenesis, diagnostic procedures, and treatment. Some endocrine disorders, particularly hypothyroidism, nephrogenic-diabetes insipidus, and hypoglycemic conditions, are frequently associated with mental retardation. Early diagnosis and prompt and proper management reduce mortality and the incidence of mental retardation associated with endocrine disorders. PMID:7392067

  6. Low Elevated Lead Levels and Mental Retardation.

    ERIC Educational Resources Information Center

    Marlowe, Mike; And Others

    The relationship between low elevated lead absorption and mild mental retardation was investigated in 40 rural children (preschool to grade 12) without demonstrable cause for their retardation. Trace mineral analysis of hair samples from Ss and a control group (N=20) indicated the mean hair lead concentrations for the retarded Ss were considerably…

  7. Mental Retardation: Prevention Strategies That Work.

    ERIC Educational Resources Information Center

    President's Committee on Mental Retardation, Washington, DC.

    The report by the President's Committee on Mental Retardation reviews the current state of knowledge in the area of biological and environmental prevention of mental retardation and describes programs on the frontiers of research or service delivery. Section I examines programs that are effectively preventing mental retardation through biomedical…

  8. THE TEACHER OF THE MENTALLY RETARDED.

    ERIC Educational Resources Information Center

    CHARNEY, LEON; LACROSSE, EDWARD

    BASIC INFORMATION IS PROVIDED FOR PROSPECTIVE TEACHERS OF MENTALLY RETARDED CHILDREN. THE FIRST FOUR CHAPTERS ARE DEVOTED TO CLASSROOM CONDITIONS, PARENTAL ATTITUDES, AND TEACHER-PUPIL INTERACTION IN THE SPECIAL CLASS FOR RETARDATES. CHAPTER ONE GIVES A GENERAL DESCRIPTION OF THE MENTALLY RETARDED CHILD AS HE APPEARS TO THE TEACHER. CHAPTER TWO…

  9. [Sterilization of mentally retarded women].

    PubMed

    Heidenreich, W; Petersen, P; Schneider, J

    1982-07-01

    Seven mentally retarded women were sterilized in the Department of Obstetrics and Gynaecology of Medical School Hannover between 1.6.74 and 1.6.81. The decision to operate proceeded only after careful consideration by the director of the clinic. Each case was documented with proof that improvement of the mental situation was unprobable and that sterilization seemed highly desirable. In spite of strong reservation the sterilization of a mentally retarded may medically and ethically be justified in exceptional cases. The operation seems possible by the following: The sterilization may only be performed if the patient does not obviously refuse it. Diagnosis and prognosis of the mental handicap must undoubtedly be proven. If the patient cannot judge the consequence of the operation the legal guardian must decide for her. The court must consent in these cases. Regarding legal theory the decision by the guardian is an open question. PMID:6922080

  10. Fire-Retardant Polymeric Additives

    NASA Technical Reports Server (NTRS)

    Williams, Martha K.; Smith, Trent M.

    2011-01-01

    Polyhydroxyamide (PHA) and polymethoxyamide (PMeOA) are fire-retardant (FR) thermoplastic polymers and have been found to be useful as an additive for imparting fire retardant properties to other compatible, thermoplastic polymers (including some elastomers). Examples of compatible flammable polymers include nylons, polyesters, and acrylics. Unlike most prior additives, PHA and PMeOA do not appreciably degrade the mechanical properties of the matrix polymer; indeed, in some cases, mechanical properties are enhanced. Also, unlike some prior additives, PHA and PMeOA do not decompose into large amounts of corrosive or toxic compounds during combustion and can be processed at elevated temperatures. PMeOA derivative formulations were synthesized and used as an FR additive in the fabrication of polyamide (PA) and polystyrene (PS) composites with notable reduction (>30 percent for PS) in peak heat release rates compared to the neat polymer as measured by a Cone Calorimeter (ASTM E1354). Synergistic effects were noted with nanosilica composites. These nanosilica composites had more than 50-percent reduction in peak heat release rates. In a typical application, a flammable thermoplastic, thermoplastic blend, or elastomer that one seeks to render flame-retardant is first dry-mixed with PHA or PMeOA or derivative thereof. The proportion of PHA or PMeOA or derivative in the mixture is typically chosen to lie between 1 and 20 weight percent. The dry blend can then be melt-extruded. The extruded polymer blend can further be extruded and/or molded into fibers, pipes, or any other of a variety of objects that may be required to be fire-retardant. The physical and chemical mechanisms which impart flame retardancy of the additive include inhibiting free-radical oxidation in the vapor phase, preventing vaporization of fuel (the polymer), and cooling through the formation of chemical bonds in either the vapor or the condensed phase. Under thermal stress, the cyclic hydroxyl/ methoxy

  11. Fire retardancy using applied materials

    NASA Technical Reports Server (NTRS)

    Feldman, R.

    1971-01-01

    An example of advanced technology transfer from the Little Joe, Surveyor, Comsat, re-entry and Apollo age to everyday fire protection needs is presented. Utilizing the principle of sublimation cooling for thermostatic temperature control, the material meets a wide range of fire retardancy and heat transmission control requirements. Properties vary from flexible tape for conduits and electrical cables to rigid coatings for column protection, with a broad spectrum of sublimation temperatures available. The material can be applied in the field or in the factory, utilizing mass production techniques, yielding a product that is reliable, effective, widely available and low in cost.

  12. A research on the moderate transference of China's agricultural labor.

    PubMed

    Li, H; Wu, M; Zhu, J; Wu, G

    1990-01-01

    Examining the economic impact of large transfers of agricultural laborers to other occupations in China, this article argues in favor of moderate transference and provides specific measures for accomplishing that level of relocation. In 1979, China adopted a rural economic reform which prompted a total of 54.6 million farmers to transfer to other occupations over the next decade. Despite the transfers, the authors calculate that there remains an agricultural labor surplus of 70 million. While some maintain that accelerated transference of agricultural labor is necessary to achieve economic growth, the article points out not only the obstacles to accelerated transference but also its detrimental economic impact. 3 main factors hinder accelerated transference: the limited capacity of urban areas to absorb new labor, the limited amount of funds for investments needed to make the transfer possible, and the limited amount of energy and raw materials. Given China's current situation, accelerate transfers would only worsen the overcrowding of cities, aggravate the shortages of energy and raw materials, and retard economic progress by increasing inflation. The authors explain that China's particular situation calls for a policy of moderate transference, one that takes into account land output value, the capacity of nonagricultural sectors to absorb new labor, and the capacity of urban areas to absorb people. The authors propose the following 4 general measures that such a policy should include: 1) promoting technological development in rural areas, 2) adjusting and expanding the various structures in township enterprises, 3) favoring central townships, and 4) improving rural education. Within each of these general measures, the authors offer more specific recommendations. PMID:12343586

  13. Orthopaedic Problems of the Mentally Retarded

    ERIC Educational Resources Information Center

    McSweeney, Anthony

    1972-01-01

    Problems encountered by orthopedic surgeons treating the mentally retarded are identified, and cooperation among pediatricians, psychiatrists, psychologists, social workers, physiotherapists, occupational therapists, and orthopedic surgeons is recommended. (GW)

  14. Warming of the Indian Ocean Threatens Eastern and Southern Africa, but could be Mitigated by Agricultural Development

    NASA Technical Reports Server (NTRS)

    Funk, Chris; Dettinger, Michael D.; Brown, Molly E.; Michaelsen, Joel C.; Verdin, James P.; Barlow, Mathew; Howell, Andrew

    2008-01-01

    Since 1980, the number of undernourished people in eastern and southern Africa has more than doubled. Rural development stalled and rural poverty expanded during the 1990s. Population growth remains very high and declining per capita agricultural capacity retards progress towards Millennium Development goals. Analyses of in situ station data and satellite observations of precipitation identify another problematic trend. Main growing season rainfall receipts have diminished by approximately 15% in food insecure countries clustered along the western rim of the Indian Ocean. Occurring during the main growing seasons in poor countries dependent on rain fed agriculture, these declines are societally dangerous. Will they persist or intensify? Tracing moisture deficits upstream to an anthropogenically warming Indian Ocean leads us to conclude that further rainfall declines are likely. We present analyses suggesting that warming in the central Indian Ocean disrupts onshore moisture transports, reducing continental rainfall. Thus late 20th century anthropogenic Indian Ocean warming has probably already produced societally dangerous climate change by creating drought and social disruption in some of the world's most fragile food economies. We quantify the potential impacts of the observed precipitation and agricultural capacity trends by modeling millions of undernourished people as a function of rainfall, population, cultivated area, seed and fertilizer use. Persistence of current tendencies may result in a 50% increase in undernourished people. On the other hand, modest increases in per capita agricultural productivity could more than offset the observed precipitation declines. Investing in agricultural development can help mitigate climate change while decreasing rural poverty and vulnerability.

  15. You and Your Retarded Child. A Manual for Parents of Retarded Children.

    ERIC Educational Resources Information Center

    Kirk, Samuel A.; And Others

    The book offers advice to parents of retarded children in recognizing and facing inherent problems and provides insight into their own emotional needs and those of their child. Levels of retardation are described and assistance given to aid parents in determining how retarded their child is and whether to send the child to a residential school or…

  16. Intumescent Coatings as Fire Retardants

    NASA Technical Reports Server (NTRS)

    Parker, J. A.; Fohlen, G. M.; Sawko, P. M.; Fish, R. H.

    1970-01-01

    The development of fire-retardant coatings to protect surfaces which may be exposed to fire or extreme heat is a subject of intense interest to many industries. A fire-retardant paint has been developed which represents a new chemical approach for preparing intumescent coatings, and potentially, is very important to fire-prevention authorities. The requirements for a superior coating include ease of application, suitability to a wide variety of surfaces and finishes, and stability over an extended period of time within a broad range of ambient temperature and humidity conditions. These innovative coatings, when activated by the heat of a fire, react to form a thick, low-density, polymeric coating or char layer. Water vapor and sulphur dioxide are released during the intumescent reaction. Two fire-protection mechanisms thus become available: (1) the char layer retards the flow of heat, due to the extremely low thermal conductivity; and (2) water vapor and sulfur dioxide are released, providing fire quenching properties. Still another mechanism functions in cases where the char, by virtue of its high oxidation resistance and low thermal conductivity, reaches a sufficiently high temperature to re-radiate much of the incident heat load. The coatings consist of dispersions of selective salts of a nitro-amino-arornatic compound. Specifically, para-nitroaniline bisulfate and the ammonium salt of para-nitroaniline-ortho sulphuric acid (2-amino-5-nitrobenzenesulphuric acid) are used. Suitable vehicles are cellulose nitrate of lacquer grade, a nitrite-phenolic modified rubber, or epoxy-polysulfide copolymer. Three separate formulations have been developed. A solvent is usually employed, such as methylethyl ketone, butyl acetate, or toluene, which renders the coatings suitably thin and which evaporates after the coatings are applied. Generally, the intumescent material is treated as insoluble in the vehicle, and is ground and dispersed in the vehicle and solvent like an

  17. Epidemiological issues in mental retardation.

    PubMed

    Fryers, T

    1987-12-01

    The basic epidemiological issues have not changed fundamentally in 30 years but emphases are different. Clarity of concept and definition is essential; we need several definitions for different purposes, and should distinguish global criteria defining groups in some way specifically 'retarded' and partial criteria defining groups not exclusive to retardation. Of global definitions, we can distinguish Intellectual Impairment based on IQ, Learning Disability based on educational criteria, and Mental Handicap or Retardation based on service or administrative criteria. The first and second may be co-terminous for children. The first and third are usually co-terminous below a certain IQ level, conventionally 50, as SII and SMH/R. This is not so for higher ability groups: MII and MMR are conceived and defined differently, and suit different research purposes. There may be much unknown need because there have been so few studies of total IQ defined groups above 50. Although organic and psychological factors are very important, the study of MMR needs to recognize its primarily social nature, reflecting determinants of selection into MMR status in legal, organizational and professional structures, activities and attitudes characteristic of particular communities and cultures. If the primary focus is on aetiological factors, natural history, and preventive possibilities, study group should be aetiologically defined and preferably not limited to MR. The same applies to specific impairments, disabilities, diseases, behaviours and disadvantages. The services are also susceptible to epidemiological approaches, descriptive, analytic, interventionist and evaluative, but little is yet available on agency structure and function, professional activities, attitudes and training, legal contexts, and financial constraints. Rigorous outcome studies would greatly benefit rapidly developing services. We know quite a lot about the distribution and associations of SII/SMR, though more is

  18. Validation of Cardiovascular Fitness Field Tests in Children with Mental Retardation.

    ERIC Educational Resources Information Center

    Fernhall, Bo; Pitetti, Kenneth H.; Vukovich, Matthew D.; Stubbs, Nancy; Hensen, Terri; Winnick, Joseph P.; Short, Francis X.

    1998-01-01

    The validity of the 600-yard walk/run, the 20-meter shuttle run, and a modified 16-meter shuttle run was determined to measure aerobic capacity (VO2peak) in 34 children with mental retardation (ages 10-17). All field tests were found to be very reliable, and VO2peak was significantly related to them all. (Author/CR)

  19. Habilitation of the Severely and Profoundly Retarded: Volume III. Reports from the Specialized Training Program.

    ERIC Educational Resources Information Center

    Horner, Robert H., Ed.; Bellamy, G. Thomas, Ed.

    Sixteen papers concerned with vocational habilitation of the severely and profoundly retarded are organized into three parts: issues in habilitation, stimulus control of vocational behavior, and instrumentation for program evaluation. Papers have the following titles and authors: "Structured Employment: Productivity and Productive Capacity" (R.…

  20. Identifying Depression in Students with Mental Retardation.

    ERIC Educational Resources Information Center

    Stough, Laura M.; Baker, Lynn

    1999-01-01

    Offers guidelines to teachers for identifying depression in students with mental retardation. Discusses prevalence and symptoms of depression, causes of depression, difficulty of diagnosis in students with mental retardation, detecting symptoms in the classroom, treatment of depression, and psychological services. Inserts list ideas for helping…

  1. Teaching Language Arts to Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Thomas, Janet K.

    Suggestions are made for teaching language arts to mentally retarded children. The nature of language arts, the effect of mental retardation on the learning of language arts, and the need for home-school cooperation are treated. Also described are language arts areas, the school program, methods of beginning instruction, speech training,…

  2. Arm Tremor, Tardive Dyskinesia, and Mental Retardation.

    ERIC Educational Resources Information Center

    van Emmerik, R. E. A.; And Others

    1993-01-01

    The arm tremor of adults (n=32) diagnosed as having mental retardation and/or tardive dyskinesia was examined through an analysis of the acceleration properties of several arm postures. The degree of arm acceleration was increased in all subjects compared to a control group without mental retardation. Effects of neuroleptic medication were noted.…

  3. Innovations in Vocational Rehabilitation and Mental Retardation.

    ERIC Educational Resources Information Center

    Ayers, George E., Ed.

    Conference proceedings of the Vocational Rehabilitation Subdivision Meetings held at the American Association on Mental Deficiency contain discussions of innovative aspects of vocational rehabilitation and mental retardation. In the area of training rehabilitation counselors, George Baroff describes the Mental Retardation Training Institute in…

  4. Political Philosophy and the Mentally Retarded.

    ERIC Educational Resources Information Center

    Stanovich, Keith E.

    The effects of Social Darwinism, eugenics, and contemporary political conservatism on the status of advocacy efforts for the mentally retarded are reviewed. Provided are historical sketches of Social Darwinism, which viewed the retarded as members of an inferior race, and eugenics, which argued for sterilization of the "genetically unfit". The…

  5. Retarded Children of the Poor: A Casebook.

    ERIC Educational Resources Information Center

    Kirkland, Majorie H.

    Written for welfare and social workers, the publication concerns families which have problems of retardation, usually mild or borderline, and which are heavily represented on welfare rolls. A brief discussion of retardation and family and child welfare services is followed by a list of suggested readings dealing with social and child welfare…

  6. Assertiveness Training and the Mentally Retarded.

    ERIC Educational Resources Information Center

    Granat, Jay P.

    1978-01-01

    This article reviews some of the basic principles of assertiveness training and explains the application of this treatment to the habilitation of mentally retarded adults. It presents qualitative data regarding the value of assertiveness training in a counseling group of mentally retarded persons and proposes several guidelines for counselors.…

  7. Body Awareness in Children with Mental Retardation

    ERIC Educational Resources Information Center

    Simons, Johan; Dedroog, Inge

    2009-01-01

    The body awareness of 124 toddlers with mental retardation and of 124 children developing normally matched to them on age and gender was examined. Twenty-nine of the children with mental retardation were diagnosed as Down syndrome (DS). The "Pointing and Naming" Test of Berges and Lezine [Berges, J., & Lezine, I. (1978). "Test d'imitation de…

  8. Mental Retardation: Update 2002. ERIC Digest.

    ERIC Educational Resources Information Center

    Hourcade, Jack

    This digest provides an overview of mental retardation in children and adults. It begins by discussing the definition of mental retardation and the three components that are required for an accurate diagnosis: an IQ score of approximately 70 or below, a determination of deficits in adaptive behavior, and origins of the disability prior to age 18.…

  9. UNDERSTANDING AND HELPING THE RETARDED READER.

    ERIC Educational Resources Information Center

    STRANG, RUTH, ED.

    THE PROCEEDINGS OF A 1962 STATEWIDE ARIZONA CONFERENCE ON READING DEVELOPMENT AND READING DIFFICULTIES INCLUDE 15 PAPERS. ARTICLES ON THE ABLE RETARDED READER ARE "UNDERSTANDING THE ABLE RETARDED READER" BY HELEN M. ROBINSON, AND "CLASSROOM PROCEDURES" BY ROSEMARY YOAKUM. PAPERS ON EMOTIONALLY DISTURBED CHILDREN ARE "IDENTIFICATION OF EMOTIONAL…

  10. Residential Facilities for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Baumeister, Alfred A., Ed.; Butterfield, Earl, Ed.

    The handbook on residential institutions, for professionals and students in the field of mental retardation, attempts to interpret the institution as a part of the culture which it serves, avoiding emotional responses but suggesting formulas for change. Characteristics of contemporary institutions for the mentally retarded are examined and…

  11. Mental Retardation's Two Cultures of Behavioral Research.

    ERIC Educational Resources Information Center

    Hodapp, Robert M.; Dykens, Elisabeth M.

    1994-01-01

    This survey of nine journals identified two distinct cultures in mental retardation research: classification by level of retardation (usually by psychologists and special educators) or etiology (usually by geneticists and psychiatric researchers). The paper discusses varied effects that genetic etiology may have on behavior, issues in reconciling…

  12. Flame retardant cotton based highloft nonwovens

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Flame retardancy has been a serious bottleneck to develop cotton blended very high specific volume bulky High loft fabrics. Alternately, newer approach to produce flame retardant cotton blended High loft fabrics must be employed that retain soft feel characteristics desirable of furnishings. Hence, ...

  13. Teaching Physical Education to Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Davis, Patricia A.

    Methods for teaching physical education activities and skills to mentally retarded children are presented. General objectives are listed and the physical education program is outlined. Hints are offered for teaching the retarded child; and basic skills and rhythms are described. The following are then described; rhythm games, a volleyball unit and…

  14. A Case of Pseudo-Retardation.

    ERIC Educational Resources Information Center

    Stott, D. H.

    Review of a case study of a 4-year-old girl who assumed the role of a retardate reveals that the girl probably suffered multiple congenital impairments of a minor character that affected the central nervous system and the structures governing social behavior and maturation. The stated basis for pseudo-retardation is the person's ability to…

  15. Poverty and Mental Retardation: A Causal Relationship.

    ERIC Educational Resources Information Center

    Hurley, Rodger L.

    The incidence of mental retardation among the poor and the reasons for such high prevalence are the focus of the text which is based largely on the state of New Jersey. Mental retardation is viewed as a social pathology which thrives in the ghetto; the effects of poverty and racial prejudice are explored as are the assessment of intelligence and…

  16. Counseling the Mentally Retarded: A Psychoeducational Perspective.

    ERIC Educational Resources Information Center

    Spragg, Paul A.

    The paper suggests that a cognitive or psychoeducational perspective is valuable in counseling mentally retarded individuals. Psychoeducational considerations in pretreatment assessment, with an emphasis on process rather than product, are noted; and it is explained that counseling of mentally retarded persons can be enhanced through the use of…

  17. Noncitizen: Plight of the Mentally Retarded

    ERIC Educational Resources Information Center

    Skarnulis, Ed

    1974-01-01

    Mentally retarded citizens have been denied their human and civil rights, not only by the public, but by professionals--including social workers. The author claims that most programs for the mentally retarded are, at best, dehumanizing. Professionals have an ethical obligation to refuse to refer children to such programs. (Author)

  18. Computational Errors of Mentally Retarded Students.

    ERIC Educational Resources Information Center

    Janke, Robert W.

    1980-01-01

    Examined computational errors made by educable mentally retarded students on the arithmetic subtest of the Wide Range Achievement Test. Retarded students had a lower percent of grouping and inappropriate inversion errors and a higher percent of incorrect operation errors than regular students had in Engelhardt's study. (Author)

  19. Care Of The Mentally Retarded

    PubMed Central

    Jacobs, J.

    1979-01-01

    Mental retardation is a clinical syndrome, not an intellectual defect or brain disease per se. As such, physicians should not participate in the downgrading labelling of moron, idiot and imbecile. Such labelled people are difficult to relate to and this results in the concept of 'nil expectations' in which the whole of society participates. Maladaptation in this syndrome is more related to poor environmental input than to basic organic defect, and is a family problem. The family doctor is in an ideal situation to help the family handle the problems of anger, shame, guilt, rejection. If aware of his own feelings, he should also be the coordinator of the physical needs of the child and the alternatives available for maximal input. Imagesp1344-a PMID:21297810

  20. Methods for determining radionuclide retardation factors: status report

    SciTech Connect

    Relyea, J.F.; Serne, R.J.; Rai, D.

    1980-04-01

    This report identifies a number of mechanisms that retard radionuclide migration, and describes the static and dynamic methods that are used to study such retardation phenomena. Both static and dynamic methods are needed for reliable safety assessments of underground nuclear-waste repositories. This report also evaluates the extent to which the two methods may be used to diagnose radionuclide migration through various types of geologic media, among them unconsolidated, crushed, intact, and fractured rocks. Adsorption is one mechanism that can control radionuclide concentrations in solution and therefore impede radionuclide migration. Other mechanisms that control a solution's radionuclide concentration and radionuclide migration are precipitation of hydroxides and oxides, oxidation-reduction reactions, and the formation of minerals that might include the radionuclide as a structural element. The retardation mechanisms mentioned above are controlled by such factors as surface area, cation exchange capacity, solution pH, chemical composition of the rock and of the solution, oxidation-reduction potential, and radionuclide concentration. Rocks and ground waters used in determining retardation factors should represent the expected equilibrium conditions in the geologic system under investigation. Static test methods can be used to rapidly screen the effects of the factors mentioned above. Dynamic (or column) testing, is needed to assess the effects of hydrodynamics and the interaction of hydrodynamics with the other important parameters. This paper proposes both a standard method for conducting batch Kd determinations, and a standard format for organizing and reporting data. Dynamic testing methods are not presently developed to the point that a standard methodology can be proposed. Normal procedures are outlined for column experimentation and the data that are needed to analyze a column experiment are identified.

  1. Toward a positive psychology of mental retardation.

    PubMed

    Dykens, Elisabeth M

    2006-04-01

    Researchers and practitioners alike have long focused on the external life conditions, adaptive behavior, and inclusion of persons with mental retardation. Using breakthroughs in positive psychology, this article proposes a new research agenda focused on the positive, internal states of those with mental retardation. It shows how major movements in the mental retardation field--quality of life, dual diagnosis, personality motivation, and families--have succeeded in some arenas but failed to address happiness and well-being. Examples of happiness--of positive emotions, flow, strengths, and virtues--are offered in people with genetic causes of mental retardation. Complexities related to etiology, measurement, flow, and a meaningful life are described, as is the vital role that mental retardation can play in the emerging science of positive psychology. PMID:16719637

  2. Flood Bypass Capacity Optimization

    NASA Astrophysics Data System (ADS)

    Siclari, A.; Hui, R.; Lund, J. R.

    2015-12-01

    Large river flows can damage adjacent flood-prone areas, by exceeding river channel and levee capacities. Particularly large floods are difficult to contain in leveed river banks alone. Flood bypasses often can efficiently reduce flood risks, where excess river flow is diverted over a weir to bypasses, that incur much less damage and cost. Additional benefits of bypasses include ecosystem protection, agriculture, groundwater recharge and recreation. Constructing or expanding an existing bypass costs in land purchase easements, and levee setbacks. Accounting for such benefits and costs, this study develops a simple mathematical model for optimizing flood bypass capacity using benefit-cost and risk analysis. Application to the Yolo Bypass, an existing bypass along the Sacramento River in California, estimates optimal capacity that economically reduces flood damage and increases various benefits, especially for agriculture. Land availability is likely to limit bypass expansion. Compensation for landowners could relax such limitations. Other economic values could affect the optimal results, which are shown by sensitivity analysis on major parameters. By including land geography into the model, location of promising capacity expansions can be identified.

  3. Grassland agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agriculture in grassland environments is facing multiple stresses from: shifting demographics, declining and fragmented agricultural landscapes, declining environmental quality, variable and changing climate, volatile and increasing energy costs, marginal economic returns, and globalization. Degrad...

  4. Agricultural Production.

    ERIC Educational Resources Information Center

    Lehigh County Area Vocational-Technical School, Schnecksville, PA.

    This brochure describes the philosophy and scope of a secondary-level course in agricultural production. Addressed in the individual units of the course are the following topics: careers in agriculture and agribusiness, animal science and livestock production, agronomy, agricultural mechanics, supervised occupational experience programs, and the…

  5. Postnatal Organic Causes of Mental Retardation

    PubMed Central

    Hinton, G. G.

    1962-01-01

    A study of 1137 retarded children from Western Ontario revealed 129 (11.3%) in whom retardation was first noted after a specific postnatal event. Eighty-three of these were boys. The most common cause of postnatal cerebral injury in this series was a syndrome of unknown etiology characterized by the sudden onset of fever, convulsions and coma which occurred in 45 patients. The nature of this syndrome is discussed and the necessity for early treatment emphasized. Other postnatal causes of retardation are classified according to frequency, as encephalitis, accidents, meningitis and a miscellaneous group consisting of epilepsy and tumours. PMID:13907577

  6. Biodegradation of brominated and organophosphorus flame retardants.

    PubMed

    Waaijers, Susanne L; Parsons, John R

    2016-04-01

    Brominated flame retardants account for about 21% of the total production of flame retardants and many of these have been identified as persistent, bioaccumulative and toxic. Nevertheless, debromination of these chemicals under anaerobic conditions is well established, although this can increase their toxicity. Consequently, the production and use of these chemicals has been restricted and alternative products have been developed. Many of these are brominated compounds and share some of the disadvantages of the chemicals they are meant to replace. Therefore, other, nonbrominated, flame retardants such as organophosphorus compounds are also being used in increasing quantities, despite the fact that knowledge of their biodegradation and environmental fate is often lacking. PMID:26748263

  7. A polymeric flame retardant additive for rubbers

    SciTech Connect

    Ghosh, S.N.; Maiti, S.

    1993-12-31

    Synthesis of a polyphosphonate by the interfacial polymerization of bisphenol-A (BPA) and dichloro-phenyl phosphine oxide (DCPO) using cetyltrimethyl ammonium chloride (TMAC) as phase transfer catalyst (PTC) was reported. The polyphosphonate was characterized by elemental analysis, IR, TGA, DSC and 1H-NMR spectroscopy. The flame retardancy of the polymer was done by OI study. The polymer was used as a fire retardant additive to rubbers such as natural rubber (NR), styrene-butadiene rubber(SBR), nitrile rubber (NBR) and chloroprene rubber (CR). The efficiency of the fire retardant property of this additive was determined by LOI measurements of the various rubber samples.

  8. Agricultural Waste.

    PubMed

    Xue, Ling; Zhang, Panpan; Shu, Huajie; Chang, Chein-Chi; Wang, Renqing; Zhang, Shuping

    2016-10-01

    In recent years, the quantity of agricultural waste has been rising rapidly all over the world. As a result, the environmental problems and negative impacts of agricultural waste are drawn more and more attention. Therefore, there is a need to adopt proper approaches to reduce and reuse agricultural waste. This review presented about 200 literatures published in 2015 relating to the topic of agricultural waste. The review examined research on agricultural waste in 2015 from the following four aspects: the characterization, reuse, treatment, and management. Researchers highlighted the importance to reuse agricultural waste and investigated the potential to utilize it as biofertilizers, cultivation material, soil amendments, adsorbent, material, energy recycling, enzyme and catalyst etc. The treatment of agricultural waste included carbonization, biodegradation, composting hydrolysis and pyrolysis. Moreover, this review analyzed the differences of the research progress in 2015 from 2014. It may help to reveal the new findings and new trends in this field in 2015 comparing to 2014. PMID:27620093

  9. Public health implications of components of plastics manufacture. Flame retardants.

    PubMed Central

    Pearce, E M; Liepins, R

    1975-01-01

    The four processes involved in the flammability of materials are described and related to the various flame retardance mechanisms that may operate. Following this the four practical approaches used in improving flame retardance of materials are described. Each approach is illustrated with a number of typical examples of flame retardants or synthetic procedures used. This overview of flammability, flame retardance, and flame retardants used is followed by a more detailed examination of most of the plastics manufactured in the United States during 1973, their consumption patterns, and the primary types of flame retardants used in the flame retardance of the most used plastics. The main types of flame retardants are illustrated with a number of typical commercial examples. Statistical data on flame retardant market size, flame retardant growth in plastics, and price ranges of common flame retardants are presented. Images FIGURE 1. FIGURE 2. FIGURE 3. FIGURE 4. PMID:1175568

  10. Vocational Agriculture Education. Agricultural Mechanics.

    ERIC Educational Resources Information Center

    Smith, Eddie; And Others

    To assist teachers in agricultural mechanics in providing comprehensive instruction to their students, this curriculum guide treats both the mechanical skills and knowlege necessary for this specialized area. Six sections are included, as follow: orientation and safety; agricultural mechanics skills; agricultural power and machinery; agricultural…

  11. Engineering Flame Retardant Biodegradable Nanocomposites

    NASA Astrophysics Data System (ADS)

    He, Shan; Yang, Kai; Guo, Yichen; Zhang, Linxi; Pack, Seongchan; Davis, Rachel; Lewin, Menahem; Ade, Harald; Korach, Chad; Kashiwagi, Takashi; Rafailovich, Miriam

    2013-03-01

    Cellulose-based PLA/PBAT polymer blends can potentially be a promising class of biodegradable nanocomposites. Adding cellulose fiber reinforcement can improve mechanical properties of biodegradable plastics, but homogeneously dispersing hydrophilic cellulose in the hydrophobic polymer matrix poses a significant challenge. We here show that resorcinol diphenyl phosphates (RDP) can be used to modify the surface energy, not only reducing phase separation between two polymer kinds but also allowing the cellulose particles and the Halloysite clay to be easily dispersed within polymer matrices to achieve synergy effect using melt blending. Here in this study we describe the use of cellulose fiber and Halloysite clay, coated with RDP surfactant, in producing the flame retardant polymer blends of PBAT(Ecoflex) and PLA which can pass the stringent UL-94 V0 test. We also utilized FTIR, SEM and AFM nanoindentation to elucidate the role RDP plays in improving the compatibility of biodegradable polymers, and to determine structure property of chars that resulted in composites that could have optimized mechanical and thermal properties. Supported by Garcia Polymer Center and NSF Foundation.

  12. Brominated Flame Retardants and Perfluorinated Chemicals

    EPA Science Inventory

    Brominated flame retardants (BFRs) and perfluorinated chemicals (PFCs) belong to a large class of chemicals known as organohalogens. It is believed that both BFRs and PFCs saved lives by reducing flammability of materials commonly used and bactericidal (biocidal) properties. Thes...

  13. Video Tape and the Mentally Retarded

    ERIC Educational Resources Information Center

    Weisbord, H. F.

    1972-01-01

    Three uses of video tape recordings with the mentally retarded; discussed briefly are staff training or teacher education, parental involvement in the child's education, and therapeutic uses by psychiatrists and psychologists. (CB)

  14. Job Enrichment and the Mentally Retarded Worker.

    ERIC Educational Resources Information Center

    Morris, Jerry L.; And Others

    1981-01-01

    The effect of job enrichment on the production rate of 14 mentally retarded adult workers was evaluated. Job enrichment led to increases in standard rates of production for high IQ Ss and lower rates for low IQ Ss. (Author)

  15. Sterilization of Persons with Mental Retardation.

    ERIC Educational Resources Information Center

    Elkins, Thomas E.; Andersen, H. Frank

    1992-01-01

    This article examines the historical, legal, and ethical concerns regarding sterilization for persons with mental retardation and offers guidelines to help counsel individuals with disabilities or their families regarding decision making about sterilization. (DB)

  16. Retarded Children at Camp with Normal Children

    ERIC Educational Resources Information Center

    Flax, Norman; Peters, Edward N.

    1969-01-01

    Statistical analysis of data from written forms and scales (designed to measure children's behavior in groups), observations, and interviews indicated that many educalble mentally retarded children can participate successfully in camp activities with normal children. (DR)

  17. Retardation Measurements of Infrared PVA Wave plate

    NASA Astrophysics Data System (ADS)

    Sun, Y.; Z, H.; W, D.; D, Y.; Z, Z.; S, J.

    The wave plate made of Polyvinyl Alcohol PVA plastic film has several advantages such as its lower cost and insensitivity to temperature and incidence angle so it has been used in the Solar Multi-Channel Telescope SMCT in China But the important parameter retardations of PVA wave plates in the near infrared wavelength have never been provided In this paper a convenient and high precise instrument to get the retardations of discrete wavelengths or a continuous function of wavelength in near infrared is developed In this method the retardations of wave plates have been determined through calculating the maximum and minimum of light intensity The instrument error has been shown Additionally we can get the continuous direction of wavelength retardations in the ultraviolet visible or infrared spectral in another way

  18. PCBs, PBBs and Brominated Flame Retardants

    EPA Science Inventory

    This chapter introduces selected organohalogen chemicals such as polychlorinated biphenyls (PCB5), polychiorinated biphenyls (PBBs), and brominated flame retardants (BFRs) with emphasis on the background, physicochemical properties, environmental levels, health effects and possib...

  19. Anterior cervical hypertrichosis and mental retardation.

    PubMed

    Thienpont, Bernard; Vermeesch, Joris; Devriendt, Koen

    2006-07-01

    Anterior cervical hypertrichosis or hairy throat is a rare dysmorphic sign described in a total of 19 patients so far. The association with a number of additional features has been reported, including mental retardation. We report on another patient with this condition who also had moderate mental retardation, mildly dysmorphic facial features, obesity, hypermetropia and additional hair anomalies (low dorsal hair line on the neck, lumbosacral hypertrichosis). Karyotype and array comparative genomic hybridization analysis at 1 Mb resolution were normal. PMID:16760744

  20. Realidades Acerca de la Deficiencia Mental = Facts about Mental Retardation.

    ERIC Educational Resources Information Center

    Texas State Dept. of Mental Health and Mental Retardation, Austin.

    This document consists of two booklets, one in Spanish and one in English, both covering the same text: the characteristics of mentally retarded individuals, the prevalence of mentally retarded persons in Texas, causes of mental retardation, prevention possibilities, and services available to mentally retarded persons in Texas. A distinction is…

  1. Trends in Classification Usage in the Mental Retardation Literature.

    ERIC Educational Resources Information Center

    Taylor, Ronald L.; Kaufmann, Steve

    1991-01-01

    A total of 685 articles in "Mental Retardation,""American Journal of Mental Deficiency," and "American Journal on Mental Retardation" from 1980 through 1989 were examined. The mental retardation classification system developed by the American Association on Mental Retardation was used in over 50 percent of the articles, whereas the American…

  2. Agriculture, summary

    NASA Technical Reports Server (NTRS)

    Baldwin, R.

    1975-01-01

    Applications of remotely sensed data in agriculture are enumerated. These include: predictions of forage for range animal consumption, forest management, soil mapping, and crop inventory and management.

  3. Chlormequat chloride retards rat embryo growth in vitro.

    PubMed

    Xiagedeer, Bayindala; Wu, Shuang; Liu, Yingjuan; Hao, Weidong

    2016-08-01

    Chlormequat chloride is the most widely used plant growth regulator in agriculture to promote sturdier growth of grain crops by avoidance of lodging. Therefore, human exposure to chlormequat chloride is very common, but its developmental toxicity has not been studied. Thus, we investigated the developmental toxicity of chlormequat chloride by applying rat whole embryo culture (WEC) model, limb bud micromass culture and 3T3 fibroblast cytotoxicity test. Chlormequat chloride at 150μg/ml (0.93mM) retarded the rat embryo growth without causing significant morphological malformations and at 500μg/ml (3.1mM) caused both retardation and morphological malformation of the embryos. However, the proliferation and differentiation of limb bud cells were not affected by chlormequat chloride at as high as up to 1000μg/ml (6.2mM) applied. This concentration of chlormequat chloride did not affect the cell viability as examined by 3T3 fibroblast cytotoxicity test either, suggesting that cellular toxicity may not play a role in chlormequat induced inhibition of rat embryo growth. Collectively, our results demonstrated that chlormequat chloride may affect embryo growth and development without inhibiting cell viability. PMID:27165806

  4. Long-term physiological and economic consequences of growth retardation in children and adolescents.

    PubMed

    Norgan, N G

    2000-05-01

    The application of a lifespan perspective in human biology in recent years has shown that a number of early environmental factors influencing human growth and development have long-term biological or psycho-social consequences. Human growth is characterized by prolonged infancy, an extended childhood phase and high rates of growth during the adolescent growth spurt. It is unlikely that these characteristics would have evolved without having advantages, and curtailments have the potential for disadvantage. The present paper examines the evidence for long-term physiological and economic consequences of growth retardation in children and adolescents. The emphasis is the biological and economic imperatives of survival, subsistence, reproduction and production rather than aspects of metabolic competence. Many of the consequences of growth retardation are determined by the direct effect on body size, but many other consequences arise from the conditions that cause the growth retardation. Catch up of retarded growth can occur, but does not usually do so because of the continued presence of the retarding agents. Basal metabolism and physical work capacity are usually commensurate with the size of the individual; mechanical efficiency of physical work is unchanged, but falls in activity levels may occur along with a reduction in the pace of activity. Growth retardation in childhood is associated with a higher disease and mortality risk in adulthood, with decreased productivity and employment and promotion prospects. Studies are showing that relative deprivation and the accumulation of socially patterned exposures are important in some societies. Height and growth retardation have proved invaluable in reflecting these factors, but the next generation of studies may require more discriminating indices. PMID:10946793

  5. Agricultural Wastes.

    ERIC Educational Resources Information Center

    Jewell, W. J.; Switzenbaum, M. S.

    1978-01-01

    Presents a literature review of agricultural wastes, covering publications of 1976-77. Some of the areas covered are: (1) water characteristics and impacts; (2) waste treatment; (3) reuse of agricultural wastes; and (4) nonpoint pollution sources. A list of 150 references is also presented. (HM)

  6. VOCATIONAL AGRICULTURE.

    ERIC Educational Resources Information Center

    California State Dept. of Education, Sacramento. Research Coordinating Unit.

    TO ASSIST THOSE WHO MAKE DECISIONS RELATING TO EDUCATIONAL PROGRAMS IN AGRICULTURE, RECENT RESEARCH IN VOCATIONAL AGRICULTURE IS SUMMARIZED. A 1963 STUDY TREATS THE RELATIONSHIP BETWEEN WORK EXPERIENCE AND STUDENT CHARACTERISTICS, PLANS, AND ASPIRATIONS. STUDIES ON POST-SECONDARY EDUCATION CONCERN GUIDELINES FOR TECHNICIAN PROGRAMS, JUSTIFICATION…

  7. Intrauterine radiation exposures and mental retardation

    SciTech Connect

    Miller, R.W.

    1988-08-01

    Small head size and mental retardation have been known as effects of intrauterine exposure to ionizing radiation since the 1920s. In the 1950s, studies of Japanese atomic-bomb survivors revealed that at 4-17 wk of gestation, the greater the dose, the smaller the brain (and head size), and that beginning at 0.5 Gy (50 rad) in Hiroshima, mental retardation increased in frequency with increasing dose. No other excess of birth defects was observed. Otake and Schull (1984) pointed out that the period of susceptibility to mental retardation coincided with that for proliferation and migration of neuronal elements from near the cerebral ventricles to the cortex. Mental retardation could be the result of interference with this process. Their analysis indicated that exposures at 8-15 wk to 0.01-0.02 Gy (1-2 rad) doubled the frequency of severe mental retardation. This estimate was based on small numbers of mentally retarded atomic-bomb survivors. Although nuclear accidents have occurred recently, new cases will hopefully be too rare to provide further information about the risk of mental retardation. It may be possible, however, to learn about lesser impairment. New psychometric tests may be helpful in detecting subtle deficits in intelligence or neurodevelopmental function. One such test is PEERAMID, which is being used in schools to identify learning disabilities due, for example, to deficits in attention, short- or long-term memory, or in sequencing information. This and other tests could be applied in evaluating survivors of intrauterine exposure to various doses of ionizing radiation. The results could change our understanding of the safety of low-dose exposures.

  8. Reactions to the Labels "Institutionalized" and "Mentally Retarded" by Retarded and Nonretarded Persons.

    ERIC Educational Resources Information Center

    Gibbons, Frederick X.; Gibbons, Barbara N.

    The effects of labels, "mentally retarded" and "institutionalized" on the evaluations and causal attributions of nonretarded persons, and on the social distance preferences of EMR persons, were assessed. In addition, each group was asked to predict the likelihood of a labeled (mentally retarded) or a nonlabeled target person achieving success at a…

  9. X linked mental retardation: a clinical guide

    PubMed Central

    Raymond, F L

    2006-01-01

    Mental retardation is more common in males than females in the population, assumed to be due to mutations on the X chromosome. The prevalence of the 24 genes identified to date is low and less common than expansions in FMR1, which cause Fragile X syndrome. Systematic screening of all other X linked genes in X linked families with mental retardation is currently not feasible in a clinical setting. The phenotypes of genes causing syndromic and non‐syndromic mental retardation (NLGN3, NLGN4, RPS6KA3(RSK2), OPHN1, ATRX, SLC6A8, ARX, SYN1, AGTR2, MECP2, PQBP1, SMCX, and SLC16A2) are first discussed, as these may be the focus of more targeted mutation analysis. Secondly, the relative prevalence of genes causing only non‐syndromic mental retardation (IL1RAPL1, TM4SF2, ZNF41, FTSJ1, DLG3, FACL4, PAK3, ARHGEF6, FMR2, and GDI) is summarised. Thirdly, the problem of recurrence risk where a molecular genetics diagnosis has not been made and what proportion of the male excess of mental retardation is due to monogenic disorders of the X chromosome are discussed. PMID:16118346

  10. Aspects of Mathematical Modelling of Pressure Retarded Osmosis

    PubMed Central

    Anissimov, Yuri G.

    2016-01-01

    In power generating terms, a pressure retarded osmosis (PRO) energy generating plant, on a river entering a sea or ocean, is equivalent to a hydroelectric dam with a height of about 60 meters. Therefore, PRO can add significantly to existing renewable power generation capacity if economical constrains of the method are resolved. PRO energy generation relies on a semipermeable membrane that is permeable to water and impermeable to salt. Mathematical modelling plays an important part in understanding flows of water and salt near and across semipermeable membranes and helps to optimize PRO energy generation. Therefore, the modelling can help realizing PRO energy generation potential. In this work, a few aspects of mathematical modelling of the PRO process are reviewed and discussed. PMID:26848696

  11. Aspects of Mathematical Modelling of Pressure Retarded Osmosis.

    PubMed

    Anissimov, Yuri G

    2016-01-01

    In power generating terms, a pressure retarded osmosis (PRO) energy generating plant, on a river entering a sea or ocean, is equivalent to a hydroelectric dam with a height of about 60 meters. Therefore, PRO can add significantly to existing renewable power generation capacity if economical constrains of the method are resolved. PRO energy generation relies on a semipermeable membrane that is permeable to water and impermeable to salt. Mathematical modelling plays an important part in understanding flows of water and salt near and across semipermeable membranes and helps to optimize PRO energy generation. Therefore, the modelling can help realizing PRO energy generation potential. In this work, a few aspects of mathematical modelling of the PRO process are reviewed and discussed. PMID:26848696

  12. Agricultural Microbiology.

    ERIC Educational Resources Information Center

    Brill, Winston J.

    1981-01-01

    Elucidates strategies for applying microbiological techniques to traditional agricultural practices. Discusses the manipulation of microorganisms that live with plants and also the problems involved in the introduction of new genes into crop plants by recombinant DNA methods. (CS)

  13. Agricultural Geophysics

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The four geophysical methods predominantly used for agricultural purposes are resistivity, electromagnetic induction, ground penetrating radar (GPR), and time domain reflectometry (TDR). Resistivity and electromagnetic induction methods are typically employed to map lateral variations of apparent so...

  14. Statewide surveillance of halogenated flame retardants in fish in Illinois, USA.

    PubMed

    Widelka, Margaret; Lydy, Michael J; Wu, Yan; Chen, Da

    2016-07-01

    In order to better understand the exposure of aquatic systems to halogenated flame retardant contaminants, the present study investigated a variety of legacy and emerging flame retardants in common carp and largemouth bass collected from 58 stations across Illinois (United States). The data revealed that polybrominated diphenyl ethers (PBDEs) generally dominated the flame retardant residues in Illinois fish. Concentrations of ΣPBDEs (including all detectable PBDE congeners) ranged from 24.7 to 8270 ng/g lipid weight (median: 135 ng/g lw) in common carp and 15-3870 ng/g lw (median: 360 ng/g lw) in largemouth bass. In addition to PBDEs, Dechlorane analogues (i.e. Dec-603, Dec-604, and Chlordane Plus) were also frequently detected. Median concentrations of ΣDechloranes (including all detected Dechlorane analogues) were 34.4 and 23.3 ng/g lw in common carp and largemouth bass, respectively. Other emerging flame retardants, including tetrabromo-o-chlorotoluene (TBCT), hexabromobenzene (HBBZ), 2-ethylhexyltetrabromobenzoate (EH-TBB), and bis(2-ethylhexyl)-3,4,5,6-tetrabromo-phthalate (BEH-TEBP), were also detected in 40-78% of the fish at the monitored stations. Spatial analysis revealed significantly greater PBDE concentrations in fish living in impaired urban streams and lakes compared to those from the impaired agricultural and unimpaired agricultural/urban waters, demonstrating a significant urban influence on PBDE contamination. Future studies and environmental monitoring are recommended to focus on temporal trends of PBDEs and alternative flame retardants, as well as human exposure risks via edible fishes, in the identified Areas of Concern within Illinois. PMID:27131823

  15. Agricultural Waste.

    PubMed

    Shu, Huajie; Zhang, Panpan; Chang, Chein-Chi; Wang, Renqing; Zhang, Shuping

    2015-10-01

    The management and disposal of agricultural waste are drawn more and more attention because of the increasing yields and negative effects on the environment. However, proper treatments such as converting abundant biomass wastes into biogas through anaerobic digestion technology, can not only avoid the negative impacts, but also convert waste into available resources. This review summarizes the studies of nearly two hundred scholars from the following four aspects: the characterization, reuse, treatment, and management of agricultural waste. PMID:26420088

  16. Climate-smart agriculture for food security

    NASA Astrophysics Data System (ADS)

    Lipper, Leslie; Thornton, Philip; Campbell, Bruce M.; Baedeker, Tobias; Braimoh, Ademola; Bwalya, Martin; Caron, Patrick; Cattaneo, Andrea; Garrity, Dennis; Henry, Kevin; Hottle, Ryan; Jackson, Louise; Jarvis, Andrew; Kossam, Fred; Mann, Wendy; McCarthy, Nancy; Meybeck, Alexandre; Neufeldt, Henry; Remington, Tom; Sen, Pham Thi; Sessa, Reuben; Shula, Reynolds; Tibu, Austin; Torquebiau, Emmanuel F.

    2014-12-01

    Climate-smart agriculture (CSA) is an approach for transforming and reorienting agricultural systems to support food security under the new realities of climate change. Widespread changes in rainfall and temperature patterns threaten agricultural production and increase the vulnerability of people dependent on agriculture for their livelihoods, which includes most of the world's poor. Climate change disrupts food markets, posing population-wide risks to food supply. Threats can be reduced by increasing the adaptive capacity of farmers as well as increasing resilience and resource use efficiency in agricultural production systems. CSA promotes coordinated actions by farmers, researchers, private sector, civil society and policymakers towards climate-resilient pathways through four main action areas: (1) building evidence; (2) increasing local institutional effectiveness; (3) fostering coherence between climate and agricultural policies; and (4) linking climate and agricultural financing. CSA differs from 'business-as-usual' approaches by emphasizing the capacity to implement flexible, context-specific solutions, supported by innovative policy and financing actions.

  17. Agricultural Modernization and Economic Inequality: The Indian Experience

    ERIC Educational Resources Information Center

    Michie, Aruna Nayyar

    1978-01-01

    Argues that agriculture production in developing nations should be organized to ensure economic viability. Government policy must emphasize participants' productive capacities and integrate agricultural workers into the new organization of production. (Author/DB)

  18. ON ESTIMATING AGRICULTURE'S NET CONTRIBUTION TO ATMOSPHERIC CARBON

    EPA Science Inventory

    Fossil fuel combustion, chlorofluorocarbon releases, and agricultural activities (including deforestation) are the primary anthropogenic sources of greenhouse gases. Of the three sources, agriculture is the only one that also has a sink capacity. Thus, an accounting of the net ca...

  19. Working capacity of deaf and visually and mentally handicapped children*

    PubMed Central

    Cumming, G. R.; Goulding, D.; Baggley, G.

    1971-01-01

    Using bicycle ergometers, physical working capacity was determined in 61 deaf, 22 visually handicapped, and 67 mentally retarded children 8 to 17 years of age. Compared to the normal population, the working capacities per kilogram body weight of the deaf children, particularly the girls, were superior to the other groups and to the normal population. The visually handicapped had lower working capacities, while those of the retarded children were similar to the normals. The work efficiency was similar in both groups. For the boys and younger girls, the maximum oxygen uptakes per kilogram body weight were similar in the deaf and visually handicapped, results that were contrary to the working capacity studies. The difference could be explained by postulating that the deaf children did not work to maximal values though lactic acid and respiratory quotient data suggested that they did. The maximum heart rates of the deaf children were lower than the visually handicapped. PMID:5565460

  20. Puberty in the Girl Who is Retarded.

    ERIC Educational Resources Information Center

    Pattullo, Ann

    Designed to help mothers of mentally retarded girls deal with the problems and concerns of puberty, the booklet provides information on physical and emotional changes, menstruation, masturbation, heterosexual behavior, contraception, protection against sexual aggression, the possibilities of marriage, and additional sources of information.…

  1. Do the Mentally Retarded Have Poor Memory?

    ERIC Educational Resources Information Center

    Ellis, Norman R.

    1978-01-01

    A reevaluation of a number of experiments suggests that normal and retarded persons differ on short-term memory tasks from the time of initial stimulus exposure. The hypothesis that memory differences are due to differential encoding as a result of more adequate rehearsal by the normal subjects is unacceptable. (Author/BW)

  2. Brominated flame retardants as food contaminants

    Technology Transfer Automated Retrieval System (TEKTRAN)

    This book chapter reviews analytical methods for the three major brominated flame retardant (BFR) classes in use today, tetrabromobisphenol-A (TBBP-A), hexabromocyclododecanes (HBCDs), and polybrominated diphenyl ethers (PBDEs), a "legacy" BFR no longer in use, polybrominated biphenyls (PBBs), and a...

  3. Aerobic Fitness for the Moderately Retarded.

    ERIC Educational Resources Information Center

    Bauer, Dan

    1981-01-01

    Intended for physical education teachers, the booklet offers ideas for incorporating aerobic conditioning into programs for moderately mentally retarded students. An explanation of aerobic fitness and its benefits is followed by information on initiating a fitness program with evaluation of height, weight, body fat, resting heart rate, and…

  4. BROMINATED FLAME RETARDANTS: CAUSE FOR CONCERN?

    EPA Science Inventory

    Brominated flame retardants (BFRs) have routinely been added to consumer products for several decades in a successful effort to reduce fire-related injury and property damage. Recently, concern for this emerging class of chemicals has risen due to the occurrence of several class...

  5. Novel additives to retard permeable flow

    SciTech Connect

    Golombok, Michael; Crane, Carel; Ineke, Erik; Welling, Marco; Harris, Jon

    2008-09-15

    Low concentrations of surfactant and cosolute in water, can selectively retard permeable flow in high permeability rocks compared to low permeability ones. This represents a way forward for more efficient areal sweep efficiency when water flooding a reservoir during improved oil recovery. (author)

  6. BROMINATED FLAME RETARDANTS: WHY DO WE CARE?

    EPA Science Inventory

    Brominated flame retardants (BFRs) save lives and property by preventing the spread of fires or delaying the time of flashover, enhancing the time people have to escape. The worldwide production of BFRs exceeded 200,000 metric tons in 2003 placing them in the high production vol...

  7. Jean Piaget Archives Bibliography on Mental Retardation.

    ERIC Educational Resources Information Center

    Bolton, Susie; And Others

    This bibliography lists all entries from the Jean Piaget Archives Catalogues dealing with mental retardation. The list, including almost 200 entries, encompasses four works by Piaget himself, one collaboration, and 189 works by other authors. Entries are arranged in order by their publication in one of the 12 catalogues of the archives, providing…

  8. Abandoning the Myth of Mental Retardation

    ERIC Educational Resources Information Center

    Smith, J. David

    2003-01-01

    In this article, the author talks about the concept underlying the term metal retardation and the effort to define it in a way that is scientifically accurate and in a way that promotes greater sensitivity to the needs of people described by the term which has been continuous for centuries. The author states that a scientifically sound and…

  9. Computer Assisted Instruction for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Providence Coll., RI.

    Computer Assisted Instruction (CAI) for the mentally retarded is described; the advantages of CAI (which generally follows the pattern of programed instruction) are listed; and the roles of the teacher and the student are summarized. The coursewriter is explained, and its use as an experimental tool discussed. Guidelines are given covering…

  10. Language Transference by Mentally Retarded Spanish Speakers.

    ERIC Educational Resources Information Center

    Flaherty, Carol

    In an investigation of language transference vs. language interference, 12 trainable mentally retarded Spanish speakers (5 to 9 years old) were trained to name in English objects previously identified receptively and objects not previously identified receptively in Spanish. Results indicated no significant difference in the number of words learned…

  11. Implementing Programs for Trainable Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Indiana State Dept. of Public Instruction, Indianapolis.

    Guidelines for the development of programs for trainable mentally retarded children are presented. Major task areas identified are the family group, communication skills, physical development, socialization, recreational interests and skills, and preparation for work oriented activity. Six papers are presented: precision teaching and behavior…

  12. READINESS AND READING FOR THE RETARDED CHILD.

    ERIC Educational Resources Information Center

    BERNSTEIN, BEBE

    THIS TEACHER'S BOOK AND MANUAL, DESIGNED TO ACCOMPANY TWO WORKBOOKS, PRESENTS A FUNCTIONAL APPROACH TO READINESS AND READING FOR YOUNG EDUCABLE RETARDED CHILDREN. THE WORKBOOKS THEMSELVES OFFER PREPARATORY ACTIVITIES FOR CHILDREN AT THE READINESS LEVEL AND SEQUENTIAL ACTIVITIES AND MATERIALS FOR THOSE AT THE BEGINNING READING STAGE. THE TEACHER'S…

  13. Improving Outcomes for Workers with Mental Retardation

    ERIC Educational Resources Information Center

    Fornes, Sandra; Rocco, Tonette S.; Rosenberg, Howard

    2008-01-01

    This research presents an analysis of factors predicting job retention, job satisfaction, and job performance of workers with mental retardation. The findings highlight self-determination as a critical skill in predicting the three important employee outcomes. The study examined a hypothesized job retention model and the outcome of the three…

  14. Noncompliant Behavior of People with Mental Retardation.

    ERIC Educational Resources Information Center

    Walker, Rex G.

    1993-01-01

    This literature review on antecedents, behaviors, and consequences in the noncompliant behavior of people with mental retardation found that noncompliance is more likely when instructions are vague or task demands are too difficult and that noncompliance responds well to programs utilizing combinations of social and tangible rewards. (Author/JDD)

  15. New fire retardant foams and intumescents

    NASA Technical Reports Server (NTRS)

    Parker, J. A.

    1972-01-01

    The development of fire retardant foams and intumescent paints for protection of commercial aircraft passengers in the event of fire is discussed. Recommended materials and methods for evaluating the effectiveness of the materials are presented. Typical problems resulting from aircraft fires and the basic protective mechanisms to cope with these problems are examined.

  16. Teaching the Mentally Retarded Job Interviewing Skills

    ERIC Educational Resources Information Center

    Grinnell, Jr., Richard M.; Lieberman, Alice

    1977-01-01

    Examined the most effective usage of videotape in job interview skill training for 24 mentally retarded young adults utilizing the microcounseling model of instruction. Data revealed the microcounseling model is most effective with the two skill areas of eye contact and body posture regardless of the method of videotape utilization. (Author)

  17. Mental Retardation: Past, Present and Future

    ERIC Educational Resources Information Center

    Crissey, Marie Skodak

    1975-01-01

    Notes that two developments had major impacts on policies towards the mentally retarded between the 1880s and the 1920s: (1) the swing toward the eugenics-heredity-genetics movement, and (2) the development of individual intelligence testing. (Author/JM)

  18. Euthanasia and Mental Retardation: Suggesting the Unthinkable.

    ERIC Educational Resources Information Center

    Hollander, Russell

    1989-01-01

    The article examines current opinions toward euthanasia of persons with mental retardation in light of the history of public and professional attitudes. It also discusses the rejection of euthanasia on moral and religious grounds, and notes the use of lifelong incarceration, based on eugenics principles, to accomplish similar ends. (DB)

  19. HEALTH ASPECTS OF BROMINATED FLAME RETARDANTS (BFRS)

    EPA Science Inventory

    In order to reduce the societal costs of fires, flammability standards have been set for consumer products and equipment. Flame retardants containing bromine have constituted the largest share of this market due both to their efficiency and cost. While there are at least 75 dif...

  20. STUDYING LEARNING PATTERNS IN MENTAL RETARDATES.

    ERIC Educational Resources Information Center

    CANDLAND, DOUGLAS K.; MANNING, SIDNEY ALPERN

    FIVE EXPERIMENTS WERE CONDUCTED IN AN ATTEMPT TO ISOLATE SPECIFIC LEARNING PATTERNS IN CHILDREN OF VARYING DEGREES OF MENTAL RETARDATION AND TO CONTRIBUTE TO THE KNOWLEDGE OF THE PHYLOGENETIC DEVELOPMENT OF INTELLIGENCE. FACTORS STUDIED WERE THOSE KNOWN TO INFLUENCE LEARNING IN NORMAL CHILDREN AND ADULTS--KIND OF REINFORCEMENT (VERBAL OR…

  1. Ophthalmologic Screening of Adults with Mental Retardation.

    ERIC Educational Resources Information Center

    Sacks, Joel G.; And Others

    1991-01-01

    Ophthalmological screening was conducted on 113 clients in a work activity center for adults with mental retardation. Abnormalities that were neither refractive nor strabismic were found in 32 percent of clients. Findings suggest the value of conducting screenings in settings familiar to such clients. (Author/DB)

  2. HEALTH EFFECTS OF BROMINATED FLAME RETARDANTS (BFRS)

    EPA Science Inventory

    Abstract Brominated flame retardant use has increased dramatically in order to provide fire safety to consumers. However, there is growing concern about widespread environmental contamination and potential health risks from some of these products. The most used products...

  3. Vocational Horticulture for Persons with Mental Retardation.

    ERIC Educational Resources Information Center

    Kern, William H.; And Others

    The study explored methods and techniques for training mentally retarded adults to perform gardening tasks. A total of 31 subjects ages 21 to 48 (IQ range 32-89) participated in the study, which consisted of three phases. In an initial pilot study, experimentation without subjects resulted in the development of modified tools (e.g., notched…

  4. Teaching Laundry Skills to Mentally Retarded Students.

    ERIC Educational Resources Information Center

    Cuvo, Anthony J.; And Others

    1981-01-01

    Five moderately and mildly retarded students (19 to 21 years old) were taught to sort garments to be laundered and to use a clothes washer and dryer. Rapid acquisition and maintenance of the laundry skills were obtained through praise and response contingent feedback as a consequence for behavior. (Author/CL)

  5. Aging, Mental Retardation and Physical Fitness.

    ERIC Educational Resources Information Center

    Rimmer, James H.

    This fact sheet uses a question-and-answer format to provide an overview of what physical fitness is and how it relates to people with mental retardation. Questions address the following topics: the fitness movement; a definition of physical fitness; the different components of physical fitness (muscle strength and endurance, flexibility, body…

  6. PARENT ATTITUDES IN REARING MENTALLY RETARDED CHILDREN.

    ERIC Educational Resources Information Center

    LEICHMAN, NATHAN S.; WILLENBERG, ERNEST P.

    POSITIVE AND NEGATIVE ASPECTS OF REARING MENTAL RETARDATES WERE IDENTIFIED AND MEASURED DURING THIS STUDY BY EXAMINATIONS OF PARENTAL ATTITUDES AND HOW THESE ATTITUDES OFTEN AFFECT THE DAILY BEHAVIOR AND LEARNING READINESS OF CHILDREN WHILE IN SCHOOL. BEHAVIORAL FACTORS OF THE INDIVIDUAL CHILD WERE ANALYZED AND COMPARED WITH STATISTICS COVERING…

  7. Water retention and runoff retardation in a drained wetland after heavy rainfall events

    NASA Astrophysics Data System (ADS)

    Dietrich, Ottfried; Fahle, Marcus; Steidl, Jörg

    2014-05-01

    Wetlands are often described as a sponge; they are believed to buffer surplus water coming from precipitation or inflow from the catchment and to emit it slowly to the downstream part of the river basin. However, in Middle or Western Europe anthropogenically influenced wetlands outnumber natural ones. In the last 200 years many wetlands have been drained to use the land for agriculture or forestry. Their water balance is nowadays regulated by water management systems consisting of ditches, weirs and sometimes pumping stations. Still, typical wetland characteristics are maintained: Groundwater levels only a few decimeters below the land surface, small surface slopes, high evapotranspiration, the domination of peat soils and extensive grasslands as the prevailing form of land use. Two main issues arise and are discussed in different contexts: (i) the extent to which the behavior of anthropogenically influenced wetlands differs from that of natural wetlands and (ii) their buffering capacities. The objective of our study was to investigate how a drained, agricultural wetland reacted to heavy rainfall events and to determine the influencing factors. In total 29 rainfall events with amounts greater than 10 mm were selected in the period between April 2010 and October 2012. The reactions of groundwater and ditch water levels were analysed, as well as the water balance of the rainfall events. The latter was determined using a weighable groundwater lysimeter installed in the Spreewald wetland in northeast Germany, whose groundwater level was adjusted to the surrounding grassland site. Our measurements showed that on average 70% of the rainfall was stored in the wetland, while only 10% was discharged. In dry periods, when sub-irrigation was present at the beginning of the rainfall event, more water was stored (83%) than in wet periods (51%) while the share of runoff was nearly halved. Evapotranspiration played an important role during the runoff process. The wetland had a

  8. Fully variable elliptical phase retarder composed of two linear phase retarders

    NASA Astrophysics Data System (ADS)

    Yu, Chih-Jen

    2016-03-01

    In this study, a fully variable elliptical phase retarder was developed by combining a variable linear phase retarder and a half-wave plate. All three polarization parameters of the elliptical phase retarder (elliptical phase retardation γ, azimuth angle θ, and ellipticity angle ɛ) were adjustable. Experimental verification was performed by measuring the polarization parameters with a polarizer-sample-analyzer polarimeter. The polarization parameters were set to γ = 120°, ɛ = 15°, and θ = 20°. The measurement results, γ = 119.838° ± 0.006°, ɛ = 14.659° ± 0.002°, and θ = 20.084° ± 0.002°, agreed with theoretical prediction.

  9. Cardiovascular Risk Factor Levels in Adults with Mental Retardation.

    ERIC Educational Resources Information Center

    Rimmer, James H.; And Others

    1994-01-01

    Comparison of cardiovascular risk factors (blood lipids, obesity, and smoking) in 329 adults with mental retardation residing in various settings with subjects in the Framingham Offspring Study found that adults with mental retardation had cardiovascular risk profiles similar to those of individuals without mental retardation. (Author/DB)

  10. Mental Retardation: The Search for Cures. Research Monograph Number 7.

    ERIC Educational Resources Information Center

    Menolascino, Frank J.; Neman, Ronald

    The booklet describes the Association for Retarded Citizens' (ARC's) goal of coordinating efforts to seek a cure for mental retardation. Cures are defined as any intervention that would significantly increase intellectual functioning and adaptive behavior beyond the upper level of retardation. It is explained that because of the variety of causes…

  11. The Problem of Typological Thinking in Mental Retardation.

    ERIC Educational Resources Information Center

    Gelb, Steven A.

    1997-01-01

    Asserts that typological thinking, the belief that individual differences diverge around an underlying type of essence, has persisted regarding mental retardation and prevents the appreciation of individual differences and human dignity in the mental retardation field. Past and present controversies over the definition of mental retardation are…

  12. Low Elevated Lead Levels and Mild Mental Retardation.

    ERIC Educational Resources Information Center

    Marlowe, Mike; And Others

    To investigate the relation between low level lead absorption and mild mental retardation, hair lead concentrations were compared in a group of 40 mildly retarded children "etiology unknown" with a control group of 20 children. Children with probable cause for retardation were excluded from the sample as were children with a history of lead…

  13. Attitudes of High School Students toward Individuals with Mental Retardation.

    ERIC Educational Resources Information Center

    Krajewski, Junean; Flaherty, Thomas

    2000-01-01

    The attitudes of 144 high school students toward individuals with mental retardation were examined using the Mental Retardation Attitude Inventory-Revised. Results indicated that gender and frequency of contact both influenced attitudes. Females and students with more frequent contacts with individuals with mental retardation indicated more…

  14. Conjunctive Visual Search in Individuals with and without Mental Retardation

    ERIC Educational Resources Information Center

    Carlin, Michael; Chrysler, Christina; Sullivan, Kate

    2007-01-01

    A comprehensive understanding of the basic visual and cognitive abilities of individuals with mental retardation is critical for understanding the basis of mental retardation and for the design of remediation programs. We assessed visual search abilities in individuals with mild mental retardation and in MA- and CA-matched comparison groups. Our…

  15. Neuropsychological Profiles of Persons with Mental Retardation and Dementia

    ERIC Educational Resources Information Center

    Palmer, Glen A.

    2006-01-01

    This study examined the use of neuropsychological tests to assist in the differential diagnosis of dementia among persons with mental retardation. The author compared performances of persons with mental retardation and dementia ("n" = 10) to persons with mental retardation without dementia ("n" = 12). Participants were matched by IQ (mild or…

  16. Stimulus Overselectivity: A Common Feature in Autism and Mental Retardation

    ERIC Educational Resources Information Center

    Lovaas, O. Ivar; Wilhelm, Hannelore

    1976-01-01

    Overselective attention in discrimination between picture cards was investigated with three groups of children with different IQ levels: 10 severely retarded (IQ = 29 - 51, CA = 9.6 - 18 years), 10 moderately retarded (IQ = 56 - 85, CA = 12.8 - 16.3 years), and 10 non-retarded (CA = 10 - 12 years). (Author/IM)

  17. Repair Behaviors of Children with and without Mental Retardation.

    ERIC Educational Resources Information Center

    Scudder, Rosalind R.; Tremain, Deborah Hobbs

    1992-01-01

    Communication repair behaviors of 10 children with mental retardation (ages 11-13) and 10 mental age-matched children without mental retardation were examined. The children with mental retardation did not respond as often and rarely used details to expand their utterances. Results have implications for the development of conversational skills in…

  18. Motor Task Persistence of Children with and without Mental Retardation.

    ERIC Educational Resources Information Center

    Kozub, Francis M.; Porretta, David L.; Hodge, Samuel R.

    2000-01-01

    Task persistence by 31 children (ages 9-13) with and without mental retardation during two challenging motor tasks was investigated. A main effect was found for group affiliation: children without mental retardation attempted more trials over three sessions. Results indicated children with mental retardation were less persistent than typical…

  19. Guidelines for Library Services for People with Mental Retardation.

    ERIC Educational Resources Information Center

    Association of Specialized and Cooperative Library Agencies, Chicago, IL.

    This guide is designed to assist all libraries, including school, public, academic, and specialized libraries such as prison and institutional libraries, to better serve the needs of people of all ages who are mentally retarded. An overview provides a definition of mental retardation, places services for people with mental retardation in…

  20. Serving Young Children Whose Parents Are Mentally Retarded.

    ERIC Educational Resources Information Center

    Lynch, Eleanor W.; Bakley, Sue

    1989-01-01

    The article reviews the cognitive and social/emotional characteristics associated with mental retardation, the literature on parents with mental retardation, and the interaction between these characteristics in relation to child abuse and neglect. Three case studies of mentally retarded parents illustrate the range of problems and needs service…

  1. Older Mentally Retarded Persons: Demographic Profile and Service Requirements.

    ERIC Educational Resources Information Center

    Seltzer, Marsha Mailick

    An overview is presented on current knowledge about elderly mentally retarded persons. Definitional and incidence issues are addressed, and support is voiced for use of a lower cut-off for the beginning of old age among the retarded than for the general population. Conflicting findings of age-related differences in mentally retarded adults are…

  2. Agricultural Biodiversity.

    ERIC Educational Resources Information Center

    Postance, Jim

    1998-01-01

    The extinction of farm animals and crops is rarely brought up during discussions of endangered species and biodiversity; however, the loss of diversity in crops and livestock threatens the sustainability of agriculture. Presents three activities: (1) "The Colors of Diversity"; (2) "Biodiversity among Animals"; and (3) "Heirloom Plants." Discusses…

  3. AGRICULTURAL EXTENSION.

    ERIC Educational Resources Information Center

    FARQUHAR, R.N.

    AUSTRALIAN AGRICULTURAL EXTENSION HAS LONG EMPHASIZED TECHNICAL ADVISORY SERVICE AT THE EXPENSE OF THE SOCIOECONOMIC ASPECTS OF FARM PRODUCTION AND FARM LIFE. ONLY IN TASMANIA HAS FARM MANAGEMENT BEEN STRESSED. DEMANDS FOR THE WHOLE-FARM APPROACH HAVE PRODUCED A TREND TOWARD GENERALISM FOR DISTRICT OFFICERS IN MOST STATES. THE FEDERAL GOVERNMENT,…

  4. AGRICULTURAL EDUCATION.

    ERIC Educational Resources Information Center

    DEALTON, ERNEST L.

    TODAY'S SUCCESSFUL FARMER MUST POSSESS THE SKILLS OF A BUSINESSMAN, SCIENTIST, AND MECHANIC TO SURVIVE COMPETITION IN AGRICULTURE, THE LARGEST INDUSTRY IN THE UNITED STATES. THIS COMPETITION HAS CAUSED AN INCREASE IN THE SIZE OF FARMS AND RANCHES IN AN ATTEMPT TO CURTAIL OPERATIONAL EXPENSES AND TO INCREASE PRODUCTION. WITH THE SCIENTIFIC…

  5. A critical evaluation of phosphate retardation and leaching in Hapludults

    NASA Astrophysics Data System (ADS)

    Dao, Thanh

    2016-04-01

    Nutrients used in production agriculture, in particular bioactive phosphorus (P), continue to present challenges in trying to reverse the degradation of fragile aquatic ecosystems. Soils treated with large amounts of nutrient-enriched animal manure have elevated P levels in regions of intensive animal agriculture and the residual effects of past large P additions were found to be long-lived. Mathematical models are increasingly used in the evaluation and development of mitigation strategies and sustainable management practices. A large number of predictive tools are currently used in the U.S. for simulating phosphorus environmental fate, including models such AGNPS (Agricultural Non-Point Source), FHANTM Field Hydrologic And Nutrient Transport Model (Field Hydrologic And Nutrient Transport Model), SWAT (Soil & Water Assessment Tool), or APEX (Agric. Policy/Environmental EXtender). The P routines in these models have had limited changes in spite of the advances in our understanding of speciation and transport of various P forms in soil and water systems that have occurred over the last three decades. We conducted soil sorption isotherm experiments that yielded basic information for estimating the Phosphorus Sorption coefficient (PSP) a key parameter used to allocate mineral P into soil labile, active, and stable pools. We compare these coefficients to parameters derived from breakthrough curves (BTC) for determining the extent of retardation and transport of phosphate supplied as KH2PO4 under a constant hydraulic head. Sigmoidal and multi-reaction rate models were observed in the BTCs of the anion, which undermine the rationale for using an overall simple partition coefficient to describe the transport and dispersal of phosphate in soil. Minimizing such generalities used in estimating nutrient availability and transport gives a more accurate picture of status of P in soil to conserve nutrients and minimize loss of excess P inputs to the environment.

  6. Warming of the Indian Ocean threatens eastern and southern African food security but could be mitigated by agricultural development

    USGS Publications Warehouse

    Funk, C.; Dettinger, M.D.; Michaelsen, J.C.; Verdin, J.P.; Brown, M.E.; Barlow, M.; Hoell, A.

    2008-01-01

    Since 1980, the number of undernourished people in eastern and southern Africa has more than doubled. Rural development stalled and rural poverty expanded during the 1990s. Population growth remains very high, and declining per-capita agricultural capacity retards progress toward Millennium Development goals. Analyses of in situ station data and satellite observations of precipitation have identified another problematic trend: main growing-season rainfall receipts have diminished by ???15% in food-insecure countries clustered along the western rim of the Indian Ocean. Occurring during the main growing seasons in poor countries dependent on rain-fed agriculture, these declines are societally dangerous. Will they persist or intensify? Tracing moisture deficits upstream to an anthropogenically warming Indian Ocean leads us to conclude that further rainfall declines are likely. We present analyses suggesting that warming in the central Indian Ocean disrupts onshore moisture transports, reducing continental rainfall. Thus, late 20th-century anthropogenic Indian Ocean warming has probably already produced societally dangerous climate change by creating drought and social disruption in some of the world's most fragile food economies. We quantify the potential impacts of the observed precipitation and agricultural capacity trends by modeling 'millions of undernourished people' as a function of rainfall, population, cultivated area, seed, and fertilizer use. Persistence of current tendencies may result in a 50% increase in undernourished people by 2030. On the other hand, modest increases in per-capita agricultural productivity could more than offset the observed precipitation declines. Investing in agricultural development can help mitigate climate change while decreasing rural poverty and vulnerability. ?? 2008 by The National Academy of Sciences of the USA.

  7. Warming of the Indian Ocean threatens eastern and southern African food security but could be mitigated by agricultural development

    PubMed Central

    Funk, Chris; Dettinger, Michael D.; Michaelsen, Joel C.; Verdin, James P.; Brown, Molly E.; Barlow, Mathew; Hoell, Andrew

    2008-01-01

    Since 1980, the number of undernourished people in eastern and southern Africa has more than doubled. Rural development stalled and rural poverty expanded during the 1990s. Population growth remains very high, and declining per-capita agricultural capacity retards progress toward Millennium Development goals. Analyses of in situ station data and satellite observations of precipitation have identified another problematic trend: main growing-season rainfall receipts have diminished by ≈15% in food-insecure countries clustered along the western rim of the Indian Ocean. Occurring during the main growing seasons in poor countries dependent on rain-fed agriculture, these declines are societally dangerous. Will they persist or intensify? Tracing moisture deficits upstream to an anthropogenically warming Indian Ocean leads us to conclude that further rainfall declines are likely. We present analyses suggesting that warming in the central Indian Ocean disrupts onshore moisture transports, reducing continental rainfall. Thus, late 20th-century anthropogenic Indian Ocean warming has probably already produced societally dangerous climate change by creating drought and social disruption in some of the world's most fragile food economies. We quantify the potential impacts of the observed precipitation and agricultural capacity trends by modeling “millions of undernourished people” as a function of rainfall, population, cultivated area, seed, and fertilizer use. Persistence of current tendencies may result in a 50% increase in undernourished people by 2030. On the other hand, modest increases in per-capita agricultural productivity could more than offset the observed precipitation declines. Investing in agricultural development can help mitigate climate change while decreasing rural poverty and vulnerability. PMID:18685101

  8. Miniature Compressive Ultra-spectral Imaging System Utilizing a Single Liquid Crystal Phase Retarder.

    PubMed

    August, Isaac; Oiknine, Yaniv; AbuLeil, Marwan; Abdulhalim, Ibrahim; Stern, Adrian

    2016-01-01

    Spectroscopic imaging has been proved to be an effective tool for many applications in a variety of fields, such as biology, medicine, agriculture, remote sensing and industrial process inspection. However, due to the demand for high spectral and spatial resolution it became extremely challenging to design and implement such systems in a miniaturized and cost effective manner. Using a Compressive Sensing (CS) setup based on a single variable Liquid Crystal (LC) retarder and a sensor array, we present an innovative Miniature Ultra-Spectral Imaging (MUSI) system. The LC retarder acts as a compact wide band spectral modulator. Within the framework of CS, a sequence of spectrally modulated images is used to recover ultra-spectral image cubes. Using the presented compressive MUSI system, we demonstrate the reconstruction of gigapixel spatio-spectral image cubes from spectral scanning shots numbering an order of magnitude less than would be required using conventional systems. PMID:27004447

  9. Miniature Compressive Ultra-spectral Imaging System Utilizing a Single Liquid Crystal Phase Retarder

    NASA Astrophysics Data System (ADS)

    August, Isaac; Oiknine, Yaniv; Abuleil, Marwan; Abdulhalim, Ibrahim; Stern, Adrian

    2016-03-01

    Spectroscopic imaging has been proved to be an effective tool for many applications in a variety of fields, such as biology, medicine, agriculture, remote sensing and industrial process inspection. However, due to the demand for high spectral and spatial resolution it became extremely challenging to design and implement such systems in a miniaturized and cost effective manner. Using a Compressive Sensing (CS) setup based on a single variable Liquid Crystal (LC) retarder and a sensor array, we present an innovative Miniature Ultra-Spectral Imaging (MUSI) system. The LC retarder acts as a compact wide band spectral modulator. Within the framework of CS, a sequence of spectrally modulated images is used to recover ultra-spectral image cubes. Using the presented compressive MUSI system, we demonstrate the reconstruction of gigapixel spatio-spectral image cubes from spectral scanning shots numbering an order of magnitude less than would be required using conventional systems.

  10. Miniature Compressive Ultra-spectral Imaging System Utilizing a Single Liquid Crystal Phase Retarder

    PubMed Central

    August, Isaac; Oiknine, Yaniv; AbuLeil, Marwan; Abdulhalim, Ibrahim; Stern, Adrian

    2016-01-01

    Spectroscopic imaging has been proved to be an effective tool for many applications in a variety of fields, such as biology, medicine, agriculture, remote sensing and industrial process inspection. However, due to the demand for high spectral and spatial resolution it became extremely challenging to design and implement such systems in a miniaturized and cost effective manner. Using a Compressive Sensing (CS) setup based on a single variable Liquid Crystal (LC) retarder and a sensor array, we present an innovative Miniature Ultra-Spectral Imaging (MUSI) system. The LC retarder acts as a compact wide band spectral modulator. Within the framework of CS, a sequence of spectrally modulated images is used to recover ultra-spectral image cubes. Using the presented compressive MUSI system, we demonstrate the reconstruction of gigapixel spatio-spectral image cubes from spectral scanning shots numbering an order of magnitude less than would be required using conventional systems. PMID:27004447

  11. Brominated flame retardants: cause for concern?

    PubMed Central

    Birnbaum, Linda S; Staskal, Daniele F

    2004-01-01

    Brominated flame retardants (BFRs) have routinely been added to consumer products for several decades in a successful effort to reduce fire-related injury and property damage. Recently, concern for this emerging class of chemicals has risen because of the occurrence of several classes of BFRs in the environment and in human biota. The widespread production and use of BFRs; strong evidence of increasing contamination of the environment, wildlife, and people; and limited knowledge of potential effects heighten the importance of identifying emerging issues associated with the use of BFRs. In this article, we briefly review scientific issues associated with the use of tetrabromobisphenol A, hexabromocyclododecane, and three commercial mixtures of polybrominated diphenyl ethers and discuss data gaps. Overall, the toxicology database is very limited; the current literature is incomplete and often conflicting. Available data, however, raise concern over the use of certain classes of brominated flame retardants. PMID:14698924

  12. [Curing mental retardation: searching for balance].

    PubMed

    Harel, Sharon; Jenna, Sarah

    2011-01-01

    Mental retardation (MR) occurs in 2 to 3 % of the general population and is still not therapeutically addressed. Milder forms of MR result from deficient synaptogenesis and/or impaired synaptic plasticity during childhood. These alterations would result from disequilibrium in signalling pathways regulating the balance between long term potentiation (LTP) and long term depression (LTD) in certain neurons such as hippocampus neurons. To provide mentally retarded children with increased cognitive abilities, novel experimental approaches are currently being developed to characterize signalling status associated with MR and to identify therapeutic targets that would restore lost equilibrium. Several studies also highlighted the major role played by molecular switches like kinases, phosphatases, small G proteins and their regulators in the coordination and integration of signalling pathways associated with synaptic plasticity. These proteins may therefore constitute promising therapeutic targets for a number of cognitive deficiencies. PMID:21299965

  13. Chemistry and toxicity of flame retardants for plastics.

    PubMed Central

    Liepins, R; Pearce, E M

    1976-01-01

    An overview of commercially used flame retardants is give. The most used flame retardants are illustrated and the seven major markets, which use 96% of all flame-retarded polymers, are described. Annual flame retardant growth rate for each major market is also projected. Toxicity data are reviewed on only those compositions that are considered commercially significant today. This includes 18 compounds or families of compounds and four inherently flame-retarded polymers. Toxicological studies of flame retardants for most synthetic materials are of recent origin and only a few of the compounds have been evaluated in any great detail. Considerable toxicological problems may exist in the manufacturing of some flame retardants, their by-products, and possible decomposition products. PMID:1026419

  14. Understanding, Deriving, and Computing Buffer Capacity

    NASA Astrophysics Data System (ADS)

    Urbansky, Edward T.; Schock, Michael R.

    2000-12-01

    The concept of buffer capacity appears in varied disciplines, including bio-, geo-, analytical, and environmental chemistry, physiology, medicine, dentistry, and agriculture. Unfortunately, however, derivation and systematic calculation of buffer capacity is a topic that seems to be neglected in the undergraduate analytical chemistry curriculum. In this work, we give an account of the development of the buffer capacity concept and derive the buffer capacity contribution equations for buffer systems containing mono-, di-, and triprotic weak acids (and their conjugate bases) and aluminum(III), which undergoes hydrolysis. A brief review of pH is provided because pH is involved in applying buffer capacity to the real world. In addition, we discuss evaluation of the equations, numerical approximation of buffer capacity when an analytic solution is not derived, and the mathematical properties of the buffer capacity expressions.

  15. The Capacity of a Mentally Challenged Person to Consent to Abortion and Sterilization

    ERIC Educational Resources Information Center

    Pollack, Daniel

    2005-01-01

    Federal law (Americans with Disabilities Act of 1990, P.L. 101-336) and state law concerning the capacity to consent demonstrate the many standards used to determine the severity of retardation and whether a mentally challenged person has the capacity to consent. This area of social policy is fascinating because it adds another layer of debate to…

  16. Contraception or eugenics? Sterilization and "mental retardation" in the 1970s and 1980s.

    PubMed

    Ladd-Taylor, Molly

    2014-01-01

    Nonconsensual sterilization is usually seen as the by-product of a classist and racist society; disability is ignored. This article examines the 1973 sterilization of two young black girls from Alabama and other precedent-setting court cases involving the sterilization of "mentally retarded" white women to make disability more central to the historical analysis of sterilization. It analyzes the concept of mental retardation and the appeal of a surgical solution to birth control, assesses judicial deliberations over the "right to choose" contraceptive sterilization when the capacity to consent is in doubt, and reflects on the shadow of eugenics that hung over the sterilization debate in the 1970s and 1980s. PMID:24909024

  17. High speed memory scanning in retarded and non-retarded adolescents.

    PubMed

    Todman, J; Gibb, C M

    1985-02-01

    Four groups of 13-14-year-olds, classified on the basis of Raven's Progressive Matrices scores as intellectually above average, average, below average and retarded, were subjects in a Sternberg (1966) type memory scanning task in which memory sets of two, three and four letters were used. Slope values of the memory search function did not differ between groups, whereas intercept values decreased with higher intelligence up to the average intelligence level. There was an overall inverse relation between intercept values and intelligence (r = -0.77) and similar relations obtained within the three non-retarded groups (rs greater than or equal to -0.57), but not within the retarded group (r = -0.06). Possible connections between these results and findings from inspection time studies are discussed. PMID:3978355

  18. 77 FR 4984 - Solicitation of Input From Stakeholders Regarding the Capacity Building Grants for Non Land Grant...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF AGRICULTURE National Institute of Food and Agriculture Solicitation of Input From Stakeholders Regarding the Capacity Building Grants for Non Land Grant Colleges of Agriculture Institutions Program AGENCY: National...

  19. Electrode contamination effects of retarding potential analyzer.

    PubMed

    Fang, H K; Oyama, K-I; Cheng, C Z

    2014-01-01

    The electrode contamination in electrostatic analyzers such as Langmuir probes and retarding potential analyzers (RPA) is a serious problem for space measurements. The contamination layer acts as extra capacitance and resistance and leads to distortion in the measured I-V curve, which leads to erroneous measurement results. There are two main effects of the contamination layer: one is the impedance effect and the other is the charge attachment and accumulation due to the capacitance. The impedance effect can be reduced or eliminated by choosing the proper sweeping frequency. However, for RPA the charge accumulation effect becomes serious because the capacitance of the contamination layer is much larger than that of the Langmuir probe of similar dimension. The charge accumulation on the retarding potential grid causes the effective potential, that ions experience, to be changed from the applied voltage. Then, the number of ions that can pass through the retarding potential grid to reach the collector and, thus, the measured ion current are changed. This effect causes the measured ion drift velocity and ion temperature to be changed from the actual values. The error caused by the RPA electrode contamination is expected to be significant for sounding rocket measurements with low rocket velocity (1-2 km/s) and low ion temperature of 200-300 K in the height range of 100-300 km. In this paper we discuss the effects associated with the RPA contaminated electrodes based on theoretical analysis and experiments performed in a space plasma operation chamber. Finally, the development of a contamination-free RPA for sounding rocket missions is presented. PMID:24517809

  20. Nanotechnology finding its way into flame retardancy

    NASA Astrophysics Data System (ADS)

    Schartel, Bernhard

    2014-05-01

    Nanotechnology is one of the key technologies of the 21st century. The exploitation of "new" effects that arise from materials structured on the nano-scale has also been proposed successfully for flame retardancy of polymers since the end of the 90s. Of all of the approaches these include, at this time the use of nanocomposites offers the best potential for industrial application, also some other ideas are sketched, such as using electrospun nanofibers mats or layer-by-layer deposits as protection coatings, as well as sub-micrometer multilayer coatings as effective IR-mirrors. The general phenomena, inducing a flow limit in the pyrolysing melt and changing the fire residue, are identified in nanocomposites. Key experiments are performed such as quasi online investigation of the protection layer formation to understand what is going on in detail. The flame retardancy mechanisms are discussed and their impact on fire behaviour quantified. With the latter, the presentation pushes forward the state of the art. For instance, the heat shielding is experimentally quantified for a layered silicate epoxy resin nanocomposite proving that it is the only import mechanism controlling the reduction in peak heat release rate in the investigated system for different irradiations. The flame retardancy performance is assessed comprehensively illuminating not only the strengths but also the weak points of the concepts. Guidelines for materials development are deduced and discussed. Apart from inorganic fillers (layered silicate, boehmite, etc.) not only carbon nanoobjects such as multiwall carbon nanotubes, multilayer graphene and graphene are investigated, but also nanoparticles that are more reactive and harbor the potential for more beneficial interactions with the polymer matrix.

  1. Nanotechnology finding its way into flame retardancy

    SciTech Connect

    Schartel, Bernhard

    2014-05-15

    Nanotechnology is one of the key technologies of the 21{sup st} century. The exploitation of 'new' effects that arise from materials structured on the nano-scale has also been proposed successfully for flame retardancy of polymers since the end of the 90s. Of all of the approaches these include, at this time the use of nanocomposites offers the best potential for industrial application, also some other ideas are sketched, such as using electrospun nanofibers mats or layer-by-layer deposits as protection coatings, as well as sub-micrometer multilayer coatings as effective IR-mirrors. The general phenomena, inducing a flow limit in the pyrolysing melt and changing the fire residue, are identified in nanocomposites. Key experiments are performed such as quasi online investigation of the protection layer formation to understand what is going on in detail. The flame retardancy mechanisms are discussed and their impact on fire behaviour quantified. With the latter, the presentation pushes forward the state of the art. For instance, the heat shielding is experimentally quantified for a layered silicate epoxy resin nanocomposite proving that it is the only import mechanism controlling the reduction in peak heat release rate in the investigated system for different irradiations. The flame retardancy performance is assessed comprehensively illuminating not only the strengths but also the weak points of the concepts. Guidelines for materials development are deduced and discussed. Apart from inorganic fillers (layered silicate, boehmite, etc.) not only carbon nanoobjects such as multiwall carbon nanotubes, multilayer graphene and graphene are investigated, but also nanoparticles that are more reactive and harbor the potential for more beneficial interactions with the polymer matrix.

  2. New hybrid halogen-free flame retardants

    NASA Astrophysics Data System (ADS)

    Kijowska, Dorota; Jankowski, Piotr

    2014-05-01

    The main objective of this work were researches concerning the methods of the in-situ modification of silicate layer-tubular mineral (SL-TM) halloysite, using the salts of melamine, i.e. melamine cyanurate. The modified mineral was used as flame retardant to thermoplastic polymers. In the case of the application of halloysite modified by melamine cyanurate to polyamide 6 (PA6) the highest parameters of vertical and horizontal flammability were achieved. The mechanical properties of filled polyamide 6 have been improved.

  3. Retardation of nanoparticles growth by doping

    NASA Astrophysics Data System (ADS)

    Nosenko, Valentyna; Rudko, Galyna; Fediv, Volodymyr; Savchuk, Andrij; Gule, Evgenij; Vorona, Igor

    2014-12-01

    The process of doping of CdS nanoparticles with Mn during colloidal synthesis is analyzed by EPR and optical studies. Analysis of EPR results demonstrated that Mn2+ ions are successfully incorporated into the nanoparticles and occupy the crystal sites both in the bulk of a NP and near the surface of a NP. Optical absorption measurements revealed the retardation of absorption edge shift during the growth for Mn-doped CdS NPs as compared to the undoped CdS NPs. It was concluded that the presence of Mn in the solution leads to the inhibition of NPs growth.

  4. Optimization of retardance for a complete Stokes polarimeter

    SciTech Connect

    Sabatke, D. S.; Descour, M. R.; Dereniak, E. L.; Sweatt, W. C.; Kemme, S. A.; Phipps, G. S.

    2000-06-01

    We present two figures of merit based on singular value decomposition, which can be used to assess the noise immunity of a complete Stokes polarimeter. These are used to optimize a polarimeter featuring a rotatable retarder and a fixed polarizer. A retardance of 132 degree sign (approximately three-eighths wave) and retarder orientation angles of {+-}51.7{sup (convolution} {sup sign)} and {+-}15.1{sup (convolution} {sup sign)} are found to be optimal when four measurements are used. Use of this retardance affords a factor-of-1.5 improvement in signal-to-noise ratio over systems employing a quarter-wave plate. A geometric means of visualizing the optimization process is discussed, and the advantages of the use of additional measurements are investigated. No advantage of using retarder orientation angles spaced uniformly through 360 degree sign is found over repeated measurements made at the four retarder orientation angles. (c) 2000 Optical Society of America.

  5. Factors affecting social integration of noninstitutionalized mentally retarded adults.

    PubMed

    Reiter, S; Levi, A M

    1980-07-01

    The social integration of noninstitutionalized moderately and mildly mentally retarded young adults was investigated. A group of moderately and mildly retarded adults (study group) was compared with a group of borderline retarded (control group) adults on employability, behavior at work, social integration and social skills, personality, and self-concept. Findings indicated that the study group was less well integrated at work and in society than was the control group and showed lack of social skills. The retarded adults who had nonretarded friends showed better social-educational skills than did the other subjects. Findings suggest that even retarded individuals who grow up in the community need help in order to become socially independent. The existence of a special social club for retarded adults was found to fulfill the functions of a sheltered framework. Participants in the club showed more positive self-concepts; however, the club did not seem to prepare them for social integration in the general community. PMID:7446566

  6. Fire-retardant decorative inks for aircraft interiors

    NASA Technical Reports Server (NTRS)

    Kourtides, D. A.; Nir, Z.; Mikroyannidis, J. A.

    1985-01-01

    Commercial and experimental fire retardants were screened as potential fire retardants for acrylic printing inks used on aircraft interior sandwich panels. The fire retardants are selected according to their physical properties and their thermostabilities. A criterion for selecting a more stable fire retardant is established. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) are used to determine thermostabilities. Results show that the fire retardant formulations are more thermally stable than the acrylic ink control. It is determined that an ink formulation containing a brominated phenol and carboxy-terminated butadiene acrylonitrile which has been modified with a brominated polymeric additive (BPA), yields the highest limiting oxygen index (LOI) of all the compounds tested. All of the fire-retardant formulations have a higher oxygen index than the baseline acrylic ink.

  7. Human Resource Development for Modernizing the Agricultural Workforce

    ERIC Educational Resources Information Center

    Rivera, William M.; Alex, Gary E.

    2008-01-01

    Greater commercialization of agricultural systems and increasing trade liberalization dictate the need for better capacity on the part of the agriculture workforce in the 21st century. Global changes in the roles of the public and private sectors and the dramatic advancements in technology have also strongly affected agricultural workforce…

  8. Spiritual and religious need of mentally retarded persons.

    PubMed

    Carder, M M

    1984-06-01

    Describes the special spiritual and religious needs of the mentally retarded, at the same time proclaiming the necessity of thinking of them firstly as persons. Gives specific illustrations of how the spiritual and religious needs of the mentally retarded may be met by peers, chaplains, and family members. Offers a personal testimony on how the mentally retarded can contribute to the growth and insight of the caregiver. PMID:10266989

  9. Comparison of Families of Children with Mental Retardation and Families of Children without Mental Retardation.

    ERIC Educational Resources Information Center

    Hodapp, Robert M.; Zigler, Edward

    1993-01-01

    This commentary on EC 605 926 states that families of children with severe mental retardation or autism have problems that might be considered "the same, only more so" compared to issues faced by families with nonhandicapped children, and therefore solutions might involve magnifications of solutions being suggested to help all parents. (JDD)

  10. Evaluation of Still Picture Telephone for Mentally Retarded Persons. Telematics and Mental Retardation.

    ERIC Educational Resources Information Center

    Brodin, Jane; Bjorck-Akesson, Eva

    This study examined the benefit of using a visual telecommunication system for Sweden's children and adults with mild to moderate mental retardation and speech difficulties. The Panasonic Image Communication Unit connects to standard modular telephones and includes a camera and monitor for the transfer of pictures. Units were placed in eight…

  11. Capacity Building of MAGDAS

    NASA Astrophysics Data System (ADS)

    Yumoto, K.

    2011-12-01

    Under the framework of the MAGDAS Project of SERC (at Kyushu University), this report will cover the three phases of "Capacity Building": (1) Development of instrument capacity, (2) Development of data analysis capacity, and (3) Development of science capacity. Capacity Building is one of the major goals of IHY and ISWI, as specified by the organizers of IHY and ISWI.

  12. Sexual Knowledge and Attitudes of Institutionalized and Noninstitutionalized Retarded Adolescents

    ERIC Educational Resources Information Center

    Hall, Judy E.; Morris, Helen L.

    1976-01-01

    Sixty-one noninstitutionalized and 61 institutionalized educable mentally retarded adolescents were psychometrically assessed on three measures: sexual knowledge, sexual attitudes, and self-concept. (Author)

  13. Rotatable broadband retarders for far infrared spectroscopic ellipsometry

    SciTech Connect

    Kang, T.D.; Carr, G.; Zhou, T.; Kotelyanskii, M.; Sirenko, A.A.

    2010-12-09

    Rotatable retarders have been developed for applications in spectroscopic, full Mueller Matrix ellipsometry in the far-IR spectral range. Several materials, such as silicon, KRS-5, and a commercial polymer plastic (TOPAS) have been utilized to achieve a fully adjustable retardation between 0{sup o} and 90{sup o}. Experimental characteristics of the rotatable retarders that utilize three- and four-bounce designs are compared with calculations. We discuss the effect of light focusing on the performance of these rotatable retarders. Broadband optical retarders are required for spectroscopic ellipsometry in its full Mueller matrix (MM) realization. Performance of the MM ellipsometer depends on the capability to produce substantially linearly-independent Stokes vectors for the light incident onto the sample. As has been shown, the errors in the measuredMMof the sample are proportional to the condition number of the 4 x 4 matrix composed of the Stokes vectors of four polarization states incident at the sample. It can be proven that it is impossible to cover the Poincare sphere with linearly-independent Stokes vectors by only changing the linear polarization at the input surface of a stationary retarder. As we will illustrate further in this paper, total coverage of the Poincare sphere is possible by rotating a tandem of a linear polarizer and a retarder with a retardation of 90{sup o}. It is this goal that we are trying to achieve in the retarder designs described in this paper.

  14. TG-FTIR characterization of flame retardant polyurethane foams materials

    NASA Astrophysics Data System (ADS)

    Liu, W.; Tang, Y.; Li, F.; Ge, X. G.; Zhang, Z. J.

    2016-07-01

    Dimethyl methylphosphonate (DMMP) and trichloroethyl phosphtate (TCEP) have been used to enhance the flame retardancy of polyurethane foams materials (PUF). Flame retardancy and thermal degradation of PUF samples have been investigated by the LOI tests and thermal analysis. The results indicate that the excellent flame retardancy can be achieved due to the presence of the flame retardant system containing DMMP and TCEP. TG-FTIR reveals that the addition of DMMP/TCEP can not only improve the thermal stability of PUF samples but can also affect the gaseous phase at high temperature.

  15. Fire-retardant decorative inks for aircraft interiors

    NASA Technical Reports Server (NTRS)

    Nir, Z.; Mikroyannidis, J. A.; Kourtides, D. A.

    1984-01-01

    Commercial and experimental fire retardants were screened for possible use wiith acrylic printing inks on aircraft interior sandwich panels. The fire retardants were selected according to their physical properties and thermostabilities. Thermostabilities were determined by thermogravimetric analysis and differential scanning calorimetry. A criterion was then established for selecting the more stable agent. Results show that some of the bromine-containing fire retardants are more thermostable than the acrylic ink, alone, used as a control. Also, the bromine-containing fire retardants yield even better limiting oxygen index values when tested after adding carboxy-terminated butadiene acrylonitrile (CTBN) rubber.

  16. Teaching about Flame Retardants. A Joint Israeli-Dutch Project

    NASA Astrophysics Data System (ADS)

    Kesner, Miri; de Vos, Wobbe

    2001-01-01

    Flame retardants make interesting chemistry and moreover, the chemistry is highly relevant from an everyday life point of view. This article reports on a joint Israeli-Dutch project aimed at teaching the production, properties, and applications of some bromine-containing flame retardants, including their environmental aspects, in secondary education. We provide information on the nature of flame retardants in general and the mechanisms of flame retardation. In addition, we offer a complete pedagogical presentation of the topic, including the use of video and some simple laboratory experiments, that was developed and successfully implemented in both countries.

    Featured on the Cover

  17. Inter-relationship among degree of mental retardation, living arrangements, and dental health in adults with mental retardation.

    PubMed

    Gabre, P; Gahnberg, L

    1997-01-01

    The aim of the present investigation was to study the inter-relationship among the degree of mental retardation, the way of living, and dental health in adults with mental retardation. One hundred and thirty-two adults between the ages of 21 and 40 years who were mentally retarded were examined on two occasions, one year apart. All subjects had had regular dental care for at least 10 years. The clinical examinations included bite-wing radiographs and were made by the same dentist. The degree of mental retardation was assessed by a professional psychologist. The results show that the degree of mental retardation as well as living arrangements are factors influencing the dental health of persons with mental retardation. Subjects who were mildly retarded had higher caries incidence and caries prevalence compared with subjects with moderate or severe mental retardation. From a preventive dental health perspective, special attention should be focused on subjects with mild mental retardation who are not living in institutions. PMID:9582703

  18. Mental Retardation. Fact Sheet = El Retraso Mental. Hojas Informativas Sobre Discapacidades.

    ERIC Educational Resources Information Center

    National Information Center for Children and Youth with Disabilities, Washington, DC.

    This fact sheet on mental retardation is written in both English and Spanish. It begins with a vignette of a 15-year-old boy with mental retardation. Mental retardation is briefly explained as are some causes of mental retardation. It notes that a diagnosis of mental retardation looks at two things: first, the ability of a person's brain to learn,…

  19. 7 CFR 1710.253 - Engineering and cost studies-addition of generation capacity.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 11 2011-01-01 2011-01-01 false Engineering and cost studies-addition of generation capacity. 1710.253 Section 1710.253 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GENERAL AND PRE-LOAN POLICIES AND PROCEDURES COMMON TO ELECTRIC LOANS AND...

  20. 7 CFR 1710.253 - Engineering and cost studies-addition of generation capacity.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 11 2012-01-01 2012-01-01 false Engineering and cost studies-addition of generation capacity. 1710.253 Section 1710.253 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GENERAL AND PRE-LOAN POLICIES AND PROCEDURES COMMON TO ELECTRIC LOANS AND...

  1. Further Evidence for Cognitive Inertia of Persons with Mental Retardation.

    ERIC Educational Resources Information Center

    Ellis, Norman R.; Dulaney, Cynthia L.

    1991-01-01

    Forty young adults with mental retardation (MR) were compared to 40 young adults without mental retardation in tests examining postpractice interference effects in naming colors of Stroop words. The study concluded that practice developed automatized reading suppression responses which held greater cognitive inertia for longer periods among MR…

  2. Labeling, Rehearsal, and Short-Term Memory in Retarded Children

    ERIC Educational Resources Information Center

    Hagen, John W.; And Others

    1974-01-01

    A short-term memory task was used to explore the effects of verbal labeling and rehearsal on serial-position recall in mildly retarded 9-to 11-year-old children. Results support the view that verbal skills affect recall in mildly retarded children similarly to normal children. (Author/SDH)

  3. Classification of Residential Facilities for Mentally Retarded People. Brief #24.

    ERIC Educational Resources Information Center

    Hill, B. K.; Lakin, K. C.

    This paper describes the development of a taxonomy of residential facilities for mentally retarded people based on program model, size, and operation. Data are presented on the use of the classification system in a national survey of 15,633 residential facilities for mentally retarded persons in the United States. Program models are defined…

  4. Burnout in Teachers of Retarded and Nonretarded Children.

    ERIC Educational Resources Information Center

    Beck, Cynthia L.; Gargiulo, Richard M.

    1983-01-01

    When teachers of moderately retarded, mildly retarded, and nonretarded students were asked to assess their own degree of burnout, special education teachers reported fewer and weaker feelings of inadequateness than did regular classroom teachers. Possible reasons for this finding and suggestions for stress reduction are given. (Authors/PP)

  5. Carbamazepine-Induced Hyponatremia in Patients with Mental Retardation.

    ERIC Educational Resources Information Center

    Kastner, Ted; And Others

    1992-01-01

    This study of 40 patients with mental retardation receiving carbamazepine found hyponatremia in only 5 percent of these patients and found a statistically, but not clinically, significant decrease in serum sodium levels in patients receiving anticonvulsant polytherapy. Results support the use of this drug with patients with mental retardation and…

  6. Building America Top Innovations 2012: Vapor Retarder Classification

    SciTech Connect

    none,

    2013-01-01

    This Building America Top Innovations profile describes research in vapor retarders. Since 2006 the IRC has permitted Class III vapor retarders like latex paint (see list above) in all climate zones under certain conditions thanks to research by Building America teams.

  7. Perceptual-Motor Attributes of Mentally Retarded Youth.

    ERIC Educational Resources Information Center

    Cratty, Bryant J.

    To evaluate six perceptual-motor attributes of trainable and educable mentally retarded children, a battery of tests was constructed which included body perception, gross agility, balance, locomotor ability, throwing, and tracking; 83 retarded subjects provided reliability data, and their scores, with those of 120 additional subjects, provided…

  8. 45 CFR 1308.10 - Eligibility criteria: Mental retardation.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... DISABILITIES Health Services Performance Standards § 1308.10 Eligibility criteria: Mental retardation. (a) A... 45 Public Welfare 4 2012-10-01 2012-10-01 false Eligibility criteria: Mental retardation. 1308.10... DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH...

  9. Characteristics of the Conditional Reasoning of Educable Retardates.

    ERIC Educational Resources Information Center

    Antonak, Richard F.; Roberge, James J.

    1978-01-01

    Pictorial conditional reasoning test items which were varied according to principle of inference and type of content were administered to three groups of educably mentally retarded children. Results revealed that retardates' reasoning strategies were congruent with those reported for younger normals in previous studies. (Author/JKS)

  10. Mental Retardation. Selected Articles from the Rehabilitation Record.

    ERIC Educational Resources Information Center

    Rehabilitation Services Administration (DHEW), Washington, DC.

    Presented are six articles on residential living, vocational education, employment recreation, deinstitutionalization, and workshop experience of mentally retarded children and adults. K. Grunewald discusses the planning of housing for five- to eight person groups of retarded children and adults in varying kinds of residential facilities in Sweden…

  11. Behavioral Treatment of Aggression in the Mentally Retarded: A Review.

    ERIC Educational Resources Information Center

    Feldstein, Jerome H.

    The paper reviews 34 behavioral treatment studies (1967-1983) examining reduction of aggressive behavior in mentally retarded people. Research reviewed was limited to treatment of physically aggressive responses such as hits, kicks, bites, chokes, scratches, and throwing objects by persons designated as mentally retarded. Among results reported…

  12. Nutrition and Mental Retardation. An Annotated Bibliography, 1964-1970.

    ERIC Educational Resources Information Center

    Springer, Ninfa Saturnino

    This annotated bibliography is primarily organized for nutritionists. It presents selected articles published from 1964 to the present. All aspects of nutrition in mental retardation are covered excepting inborn errors of metabolism. Sections are included on: (1) nutrition, birthweight, and mental retardation; (2) nutrition, growth, and mental…

  13. Arizona's Comprehensive Plan to Help the Mentally Retarded.

    ERIC Educational Resources Information Center

    Arizona State Dept. of Health, Phoenix. Mental Retardation Section.

    To help combat mental retardation, 136 recommendations are made for the following: establishment by statute of a division of mental retardation, an advisory council, and a coordinating council of agencies; changes in laws governing the Arizona Children's Colony, additional public school legislation, and a study of civil and criminal law; immediate…

  14. Recreation for the Mentally Retarded: A Handbook for Ward Personnel.

    ERIC Educational Resources Information Center

    Southern Regional Education Board, Atlanta, GA.

    Designed primarily for use by ward personnel in residential facilities for the mentally retarded, the manual presents an overview of recreational services. Four papers introduce the importance of recreation and consider approaches for its provision: "Why Recreation?" (W. Lawler); "The Role of the Attendant in Providing Recreation for the Retarded"…

  15. Association between the Diagnosis of Mental Retardation and Socioeconomic Factors.

    ERIC Educational Resources Information Center

    Slone, Michelle; Durrheim, Kevin; Lachman, Peter; Kaminer, Debra

    1998-01-01

    An examination of clinical data from the regional hospital in Cape Town, South Africa, over four years for 538 children with a diagnosis of mental retardation found mild mental retardation referrals were underrepresented in low socioeconomic areas and that paramedical agencies were the primary referral source in these areas. (Author/CR)

  16. Development of the Fear Survey for Adults with Mental Retardation

    ERIC Educational Resources Information Center

    Ramirez, Sylvia Z.; Lukenbill, James F.

    2007-01-01

    This paper describes the development of the fear survey for adults with mental retardation (FSAMR) and provides initial evidence of its psychometric properties. The FSAMR was designed to be sensitive to the assessment needs of individuals with mental retardation. The items were developed through open-ended interviews, a review of existing…

  17. COGNITIVE TRAINING WITH RETARDED CHILDREN, I. FINAL REPORT.

    ERIC Educational Resources Information Center

    CORTER, HAROLD M.; MCKINNEY, JAMES D.

    THE MAJOR PURPOSE OF THIS RESEARCH WAS TO DETERMINE WHETHER TRAINING IN SPECIFIC COGNITIVE PROCESSES IS EFFECTIVE IN INCREASING THE COGNITIVE FUNCTIONING OF RETARDED CHILDREN. IN PHASE I OF THE PROJECT, 51 EDUCABLE RETARDED AND 18 NORMAL SUBJECTS RECEIVED A 20-DAY PROGRAM IN SIMILARITIES-DIFFERENCES CONCEPT FORMATION AND WERE COMPARED WITH 42…

  18. Flame retardant antibacterial cotton high-loft nonwoven fabrics

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Flame retardant treated gray cotton fibers were blended with antibacterial treated gray cotton fibers and polyester/polyester sheath/core bicomponent fibers to form high-loft fabrics. The high flame retardancy (FR) and antibacterial property of these high lofts were evaluated by limiting oxygen inde...

  19. Adaptive Behavior Malingering in Legal Claims of Mental Retardation

    ERIC Educational Resources Information Center

    Kadlubek, Renee Marie

    2012-01-01

    In 2002, the Supreme Court ruled that it is unconstitutional to put people with mental retardation to death for capital crimes ("Atkins v. Virginia," 2002). Justice Scalia dissented, suggesting that mental retardation is a condition easy to feign. The current study examined whether participants provided with the definition of mental…

  20. Qualitative Differences in the Structure of Intelligence of Retarded Children.

    ERIC Educational Resources Information Center

    Wilson, Sheryl L.; Cleaves, Wallace T.

    To examine whether or not retarded individuals have the same structure of intelligence as normal IQ individuals, test scores from the Wechsler Intelligence Scale for Children-Revised (WISC-R), Reitan's Trail Making Test (TMT), and Beery's Developmental Test of Visual Motor Integration (VMI) for both a mildly retarded and normal IQ population of…

  1. Eyewitness Memory and Suggestibility in Children with Mental Retardation.

    ERIC Educational Resources Information Center

    Henry, Lucy A.; Gudjonsson, Gisli H.

    1999-01-01

    A study compared how well 31 children (ages 11-12) with mental retardation, 19 age-matched (CA) children, and 21 mental-age (MA) matched children were able to recall a staged event one day later. Children with mental retardation were more suggestible in response to closed misleading questions than were CA children. (Contains references.)…

  2. Family Problem-Solving with Children Who Have Mental Retardation

    ERIC Educational Resources Information Center

    Floyd, Frank J; Harter, Kristina S. M.; Costigan, Catherine L.

    2004-01-01

    Problem-solving discussions were observed within families of children with mental retardation and multiple comparison groups (total N = 162 families). As expected, parents were more persistent and directive with their children who had mental retardation, but they also avoided negative exchanges with these children. These patterns did not spillover…

  3. Psychopharmacology and Mental Retardation: A 10 Year Review (1990- 1999).

    ERIC Educational Resources Information Center

    Matson, Johnny L.; Bamburg, Jay W.; Mayville, Erik A.; Pinkston, Jim; Bielecki, Joanne; Kuhn, David; Smalls, Yemonja; Logan, James R.

    2000-01-01

    Review of the literature on psychopharmacology and mental retardation from 1990-1999 found most studies had major methodological flaws. Also, most drug administrations were not based in science, were not evaluated appropriately, and generally did not follow best practices for treatment of persons with mental retardation. A table lists the studies…

  4. Cone calorimeter evaluation of two flame retardant cotton fabrics

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Unbleached (grey) cotton needle punched nonwoven (NW) fabrics with 12.5% polypropylene scrim were treated with two phosphate-nitrogen based fire-retardant (FR) formulations, SRRC-1 and SRRC-2. The SRRC-1 formulation contains diammonium phosphate as the flame retardant chemical along with urea and d...

  5. Newborn Screening To Prevent Mental Retardation. The Arc Q & A.

    ERIC Educational Resources Information Center

    Arc, Arlington, TX.

    This information fact sheet on screening newborns to prevent mental retardation defines newborn screening and outlines how screening is performed. It discusses the six most common disorders resulting in mental retardation for which states most commonly screen. These include phenylketonuria, congenital hypothyroidism, galactosemia, maple syrup…

  6. Serial Memory Span Thresholds of Normal and Mentally Retarded Children

    ERIC Educational Resources Information Center

    Baumeister, Alfred A.

    1974-01-01

    Educable mental retardates and normal grade school students were presented seven classes of materials in both visual and auditory modalities for the determination of immediate memory span thresholds. Major conclusions included auditory presentation produces higher thresholds than visual, and retarded children may employ different processing…

  7. Programs for Preventing the Causes of Mental Retardation.

    ERIC Educational Resources Information Center

    Oliphant, Peter S.; And Others

    This monograph, which reports findings from the New Jersey Governor's Council on the Prevention of Mental Retardation, discusses the scope of mental retardation (MR), its causes, identification of people at risk, and prevention methods. The Council cites several cost-effective prevention programs, such as vaccination programs and prenatal care…

  8. Implicit Learning in Children and Adolescents with Mental Retardation.

    ERIC Educational Resources Information Center

    Vinter, Annie; Detable, Christelle

    2003-01-01

    A study compared the implicit learning of 58 children (ages 7-14) with mental retardation and 53 controls (ages 3-8). Individuals with mental retardation modified their behavior after an implicit training procedure similar to the controls. The effect of implicit learning did not vary as a function of IQ or age. (Contains references.) (Author/CR)

  9. Flame retardant properties of triazine phosphonates derivative with cotton fabric

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The flame retardant behavior of a cotton fabric treated with phosphorus-nitrogen containing triazine compound was evaluated. It was found that cyanuric chloride (2,4,6-trichloro-1,3,5-triazine) is an excellent starting material for the preparation of phosphonates flame retardants that interacts wel...

  10. CEC Selected Convention Papers; Annual International Convention: Mental Retardation.

    ERIC Educational Resources Information Center

    Council for Exceptional Children, Arlington, VA.

    The following articles on mental retardation are provided: translating research findings into classroom activity; camping programs; a measurement device for educable mentally retarded adolescents on their self-concept as a worker; an investigation of the Doman-Delacato Theory in a trainable program in the public schools; and problems of sex…

  11. Pre-Professional Training in Mental Retardation. Final Report.

    ERIC Educational Resources Information Center

    Lown, Irving C., Jr.

    To interest students in mental retardation health services careers, 10 eligible prebaccalaureate students were selected to participate in a 10-week summer training program. The first 2 weeks involved orientation to informational and training aspects of mental retardation and exposure to the health services related disciplines of recreational and…

  12. Communication Problems in Mental Retardation: Diagnosis and Management.

    ERIC Educational Resources Information Center

    Lillywhite, Herold S.; Bradley, Doris P.

    Discussed are the problems of communication in mental retardation with an introductory background and definition of this problem, including the etiological factors and general characteristics. A presentation of diagnostic methods leads into discussions of the problem of medical-dental management and educational management of the retarded child.…

  13. Novel phosphonates triazine derivative as economic flame retardant for cotton

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Phosphorous-containing flame retardants are widely used in standard and engineering plastics, polyurethane foams, thermosets, coatings, and textiles. Organophosphorous flame retardants have been known to be more effective when used in conjunction with nitrogen-containing systems. Their mixture produ...

  14. IN VITRO DERMAL ABSORPTION OF FLAME RETARDANT CHEMICALS

    EPA Science Inventory

    ABSTRACT
    The use of flame retardant chemicals in furniture fabric could pose a potential health risk to consumers from dermal absorption of these compounds. The objective of this study was to examine the in vitro dermal absorption of two flame retardant chemicals, [14C]-d...

  15. Defining Mental Retardation: A Matter of Life or Death

    ERIC Educational Resources Information Center

    Lichten, William; Simon, Elliot W.

    2007-01-01

    Because persons with mental retardation cannot be executed for murder, the diagnosis becomes a life and death matter. The American Association on Mental Retardation (now the American Association on Intellectual and Developmental Disabilities) and other associations agree that IQ alone is an insufficient criterion and adaptive functioning also…

  16. 45 CFR 1308.10 - Eligibility criteria: Mental retardation.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... DISABILITIES Health Services Performance Standards § 1308.10 Eligibility criteria: Mental retardation. (a) A child is classified as mentally retarded who exhibits significantly sub-average intellectual functioning and exhibits deficits in adaptive behavior which adversely affect learning. Adaptive behavior...

  17. PUBLIC PROVISION FOR THE MENTALLY RETARDED IN THE UNITED STATES.

    ERIC Educational Resources Information Center

    BEST, HARRY

    WRITTEN FROM THE STANDPOINT OF THE SOCIOLOGIST OR SOCIAL SCIENTIST, THIS BOOK REPORTS DATA OBTAINED FROM STATISTICAL RESEARCH ON MENTAL RETARDATES. ITS CHIEF PURPOSE IS THE SCIENTIFIC STUDY OF THE MENTALLY RETARDED AND PROVISIONS MADE FOR THEM IN THE UNITED STATES. DISCUSSION OF THE GENERAL CONDITION COVERS DEFINITION AND CLASSIFICATION, ETIOLOGY,…

  18. Estate Planning for Retarded Persons and Their Families.

    ERIC Educational Resources Information Center

    Fruge, Don L.; Green, Karen O.

    Intended for parents and legal guardians of mentally retarded persons, the manual provides guidelines for estate planning. An overview of definitions, causes, and prevalence factors in retardation is followed by reviews of the major financial assistance governmental programs such as Medicare, and Supplemental Security Income, and of legal…

  19. Ocular findings among mentally retarded children in Finland.

    PubMed

    Tuppurainen, K

    1983-08-01

    The distribution of refractive errors, astigmatism, anisometropia, visual acuity and organic ophthalmic diseases were determined among 149 Finnish mentally retarded (IQ less than 70) children, aged 9-10 years. The case group was classified in 3 categories according to the degree of mental retardation. The control group (n = 100) was selected by random sampling. PMID:6637425

  20. Defining Mental Retardation and Ensuring Access to the General Curriculum.

    ERIC Educational Resources Information Center

    Wehmeyer, Michael L.

    2003-01-01

    Discussion of trends in the American Association on Mental Retardation's definition of mental retardation notes a shift toward a support paradigm and a definition stressing the interaction between a person's independent functioning and the various contexts of the person's life. The current definition is seen to promote greater access to the…

  1. School Behavior Problems of Mentally Retarded and Normal Females.

    ERIC Educational Resources Information Center

    Cullinan, Douglas; And Others

    1983-01-01

    Female elementary, middle, and high school students (N=146) identified as educable mentally retarded were rated on the Quay-Peterson Behavior Problem Checklist by their teachers. Normal females were also rated for comparison. Analyses indicated that mentally retarded females exceeded normal females on the Conduct Disorder, Personality Problem, and…

  2. Theories on Criminality and Mental Retardation Project CAMIO, Volume 2.

    ERIC Educational Resources Information Center

    Haskins, Jimmy R.; Friel, Charles M.

    This historical review of theories on criminality and mental retardation is part of Project CAMIO (Correctional Administration and the Mentally Incompetent Offender), a Texas study to determine the incidence of criminal incarceration of the mentally retarded (MR) and to identify laws, procedures, and practices which affect the prosecution and…

  3. 38 CFR 4.127 - Mental retardation and personality disorders.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... personality disorders. 4.127 Section 4.127 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... and personality disorders. Mental retardation and personality disorders are not diseases or injuries... superimposed upon mental retardation or a personality disorder may be service-connected. (Authority: 38...

  4. 38 CFR 4.127 - Mental retardation and personality disorders.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... personality disorders. 4.127 Section 4.127 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... and personality disorders. Mental retardation and personality disorders are not diseases or injuries... superimposed upon mental retardation or a personality disorder may be service-connected. (Authority: 38...

  5. 38 CFR 4.127 - Mental retardation and personality disorders.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... personality disorders. 4.127 Section 4.127 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... and personality disorders. Mental retardation and personality disorders are not diseases or injuries... superimposed upon mental retardation or a personality disorder may be service-connected. (Authority: 38...

  6. 38 CFR 4.127 - Mental retardation and personality disorders.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... personality disorders. 4.127 Section 4.127 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... and personality disorders. Mental retardation and personality disorders are not diseases or injuries... superimposed upon mental retardation or a personality disorder may be service-connected. (Authority: 38...

  7. 38 CFR 4.127 - Mental retardation and personality disorders.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... personality disorders. 4.127 Section 4.127 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... and personality disorders. Mental retardation and personality disorders are not diseases or injuries... superimposed upon mental retardation or a personality disorder may be service-connected. (Authority: 38...

  8. Muscle Fatigue during Intermittent Exercise in Individuals with Mental Retardation

    ERIC Educational Resources Information Center

    Zafeiridis, Andreas; Giagazoglou, Paraskevi; Dipla, Konstantina; Salonikidis, Konstantinos; Karra, Chrisanthi; Kellis, Eleftherios

    2010-01-01

    This study examined fatigue profile during intermittent exercise in 10 men with mild to moderate mental retardation (MR) and 10 men without mental retardation (C). They performed 4 x 30 s maximal knee extensions and flexions with 1-min rest on an isokinetic dynamometer. Peak torque of flexors (PTFL) and extensors (PTEX), total work (TW), and…

  9. TERMINOLOGY AND CONCEPTS IN APPRAISING THE MENTALLY RETARDED.

    ERIC Educational Resources Information Center

    LORGE, IRVING; AND OTHERS

    THE OBJECTIVE OF THIS STUDY WAS TO MINIMIZE THE VARIABILITY IN LEGAL AND EDUCATIONAL CLASSIFICATION OF THE MENTALLY RETARDED. A SYSTEMATIC REVIEW WAS MADE OF THE SEMANTIC VARIATIONS IN THE DEFINITION OF THE MENTALLY RETARDED IN TERMS OF FUNCTIONAL ADEQUACY FOR EDUCATION, TRAINING, OR CUSTODIAL CARE. THE METHOD INVOLVED THE REVIEW OF STATUTES AND…

  10. A Practical Guide for Teaching the Mentally Retarded to Swim.

    ERIC Educational Resources Information Center

    American Association for Health, Physical Education, and Recreation, Washington, DC.

    A guide for teaching the retarded to swim begins with a general discussion of retardation, the need for individualization, and staff qualifications. Factors discussed in program organization and administration include community agencies, staff training, examples of records and forms, and first aid procedures. Suggested methods consider perceptual…

  11. Physical Trauma as an Etiological Agent in Mental Retardation.

    ERIC Educational Resources Information Center

    Angle, Carol R., Ed.; Bering, Edgar A., Jr., Ed.

    The conference on Physical Trauma as a Cause of Mental Retardation dealt with two major areas of etiological concern - postnatal and perinatal trauma. Following two introductory statements on the problem of and issues related to mental retardation (MR) after early trauma to the brain, five papers on the epidemiology of head trauma cover…

  12. Cytogenetic Findings in Mentally Retarded Iranian Patients

    PubMed Central

    Nasiri, F; Mahjoubi, F; Manouchehry, F; Razazian, F; Mortezapour, F; Rahnama, M

    2012-01-01

    We conducted a cytogenetic study on 865 individuals with idiopathic mental retardation (MR) who were admitted to the Cytogenetics Department of the Iran Blood Transfusion Organisation (IBTO) Research Centre, Tehran, Iran; these were performed on blood samples using conventional staining methods. Chromosome anomalies were identified in 205 of the patients (23.6%). The majority were Down’s syndrome cases (n = 138). In 33 males, a positive fragile X anomaly was found. The remainder (n = 34) had other chromosomal abnormalities including structural chromosome aberrations (n = 23), marker chromosomes with an unknown origin (n = 3), sex chromosome aneuploidy (n = 6) and trisomy 18 (n = 2). The contribution of chromosome aberrations to the cause of MR in this group of patients is discussed. PMID:24052729

  13. A mentally retarded patient with schizophrenia.

    PubMed

    Rabia, K; Khoo, Em

    2008-01-01

    Schizophrenia is one of the most incapacitating forms of mental disorder that runs a chronic and relapsing course. It typically starts in adolescence or early adulthood and can be life-long. It is more common in people with learning disabilities than in the general population. Its prodromal features include depression, anxiety, suspiciousness, social isolation and bizarre behaviour. It may result in significant functional, social and economic impairments. The care of patients with schizophrenia places a considerable burden on all carers including patient's family, health and social services. Treatment includes pharmacotherapy and psychosocial interventions. In this case report we describe a thirteen-year-old patient with schizophrenia who has a background history of mental retardation. PMID:25606140

  14. Environmental monitoring of brominated flame retardants

    NASA Astrophysics Data System (ADS)

    Vagula, Mary C.; Kubeldis, Nathan; Nelatury, Charles F.

    2011-06-01

    Brominated flame retardants (BFRs) are synthetic organobromide compounds which inhibit ignition and combustion processes. Because of their immense ability to retard fire and save life and property, they have been extensively used in many products such as TVs, computers, foam, plastics etc. The five major classes of BFRs are tetrabromobisphenol-A (TBBPA), hexabromocyclododecane (HBCD), pentabromodiphenyl ether, octabromodiphenyl ether, and decabromodiphenyl ether. The last three are also commonly called PBDEs. BDE-85 and BDE-209 are the two prominent congeners of PBDEs and this study reports the adverse effects of these congeners in rodents. Exposure of rat sciatic nerves to 5 μg/mL and 20 μg/mL of BDE-85 and BDE-209 respectively lead to significant, concentration dependent reduction in nerve conduction function. Glucose absorption in the rat intestinal segments exposed to 5 μg/mL of BDE-85 and BDE-209 was significantly reduced for both the compounds tested. Lastly, mice when exposed to 0.25 mg/kg body weight for four days showed a disruption in oxidant and antioxidant equilibrium. The tissues namely liver and brain have shown increase in the levels of lipid hydroperoxides indicating oxidative stress. Moreover, all the protective enzymes namely superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase, and glutathione S transferase (GST) have shown tissue specific alterations indicating the induction of damaging oxidative stress and setting in of lipid peroxidation in exposed animals. The results indicate monitoring of PBDEs in the environment is essential because levels as low as 5 μg/mL and 0.25 mg/kg body weight were able to cause damage to the functions of rodents.

  15. Optimization of retardance for a complete Stokes polarimeter

    SciTech Connect

    Sabatke, D.S.; Descour, M.R.; Dereniak, E.L.; Sweatt, W.C.; Kemme, S.A.; Phipps, G.S.

    2000-01-13

    The authors present two figures of merit based on singular value decomposition which can be used to assess the noise immunity of a complete Stokes polarimeter. These are used to optimize a polarimeter consisting of a rotatable retarder and fixed polarizer. A retardance of 132{degree} (approximately three eights wave) and retarder orientation angles of {+-}51.7{degree} and {+-}15.1{degree} are found to be optimal when four measurements are used. Use of this retardance affords a factor of 1.5 improvement in signal-to-noise ratio over systems employing a quarter wave plate. A geometric means of visualizing the optimization process is discussed, and the advantages of the use of additional measurements are investigated. No advantage of using retarder orientation angles spaced uniformly through 360{degree} is found over repeated measurements made at the four angles given previously.

  16. Highly accurate spectral retardance characterization of a liquid crystal retarder including Fabry-Perot interference effects

    SciTech Connect

    Vargas, Asticio; Mar Sánchez-López, María del; García-Martínez, Pascuala; Arias, Julia; Moreno, Ignacio

    2014-01-21

    Multiple-beam Fabry-Perot (FP) interferences occur in liquid crystal retarders (LCR) devoid of an antireflective coating. In this work, a highly accurate method to obtain the spectral retardance of such devices is presented. On the basis of a simple model of the LCR that includes FP effects and by using a voltage transfer function, we show how the FP features in the transmission spectrum can be used to accurately retrieve the ordinary and extraordinary spectral phase delays, and the voltage dependence of the latter. As a consequence, the modulation characteristics of the device are fully determined with high accuracy by means of a few off-state physical parameters which are wavelength-dependent, and a single voltage transfer function that is valid within the spectral range of characterization.

  17. Agricultural lands preservation: a sociology of survival

    SciTech Connect

    White, T.S.

    1983-01-01

    This is a rural sociological study investigating the viability of agricultural lands use-values and rural communities in the context of the structure of US agriculture. It outlines the theoretical foundation, ideology, and praxis of a sociology of survival. It is undertaken within the framework of environmental sociology, which focuses on the dynamic interpenetration of social and biotic systems. The concepts of carrying capacity, sustained multiple-use yield, and land-use compatibility and their significance are discussed. The phenomenon of phantom carrying capacity is explored, and its ominous portent noted; but the astonishing potential of agricultural lands to produce huge net gains in use values and in real carrying capacity is affirmed. The theory of unlimited resources, substitution, and market-allocation is falsified. Absolute shortages of renewable and nonrenewable resources are documented, and the necessity for population control, conservation, expanded sustained-yield production, and social allocation is established.

  18. Programs in Animal Agriculture.

    ERIC Educational Resources Information Center

    Herring, Don R.; And Others

    1980-01-01

    Five topics relating to programs in animal agriculture are addressed: (1) the future of animal agriculture; (2) preparing teachers in animal agriculture; (3) how animal programs help young people; (4) a nontraditional animal agriculture program; and (5) developing competencies in animal agriculture. (LRA)

  19. The Feasibility of Training Mental Retardates to Use Available Channel Capacity More Economically. Final Report.

    ERIC Educational Resources Information Center

    Jones, Elvis C.

    A pilot study and two formal studies were conducted with educable mentally handicapped (EMR) children to develop materials and procedures suitable for studying schema learning in EMRs and to demonstrate schema learning in EMRs in the absence of external guidance. The pilot and formal study I were conducted to develop suitable populations of…

  20. The Effects of a Retarded Child's Social Initiations on the Behavior of Severely Retarded School-Aged Peers.

    ERIC Educational Resources Information Center

    Kerr, Mary Margaret; Young, Clifford C.

    1979-01-01

    To increase the social responsiveness of two severely retarded and withdrawn children (six and ten years old), a five-year-old mildly retarded peer was trained to emit social approach behaviors using a procedure in which edible reinforcement was delivered by the trained peer contingent upon positive social response by the target subjects.…

  1. Residential Programming for Mentally Retarded Persons. Volume I, Prevailing Attitudes and Practices in the Field of Mental Retardation.

    ERIC Educational Resources Information Center

    National Association for Retarded Children, Arlington, TX. South Central Regional Office.

    The first of a series of four booklets on residential programing for the mentally retarded reviews for parents the prevailing definitions, attitudes and practices in the field. Mental retardation is defined as subaverage functioning which originates during the developmental period and is associated with impairment in adaptive behavior. The need…

  2. Expanding Integrated Pest Management Capacity: Rwanda Case Study

    ERIC Educational Resources Information Center

    Baributsa, Dieudonne; Flores, Luis; Rukazambuga, Daniel; Wise, John C.

    2014-01-01

    Purpose: Rwanda is developing its agricultural capacity to meet the needs of national food security while addressing food demands and requirements of regional and international markets. The Rwanda Horticultural Export Standards Initiative was developed by the Ministry of Agriculture and Natural Resources in collaboration with Michigan State…

  3. Flame Retardant Applications in Camping Tents and Potential Exposure.

    PubMed

    Keller, Alexander S; Raju, Nikhilesh P; Webster, Thomas F; Stapleton, Heather M

    2014-02-11

    Concern has mounted over health effects caused by exposure to flame retardant additives used in consumer products. Significant research efforts have focused particularly on exposure to polybrominated diphenyl ethers (PBDEs) used in furniture and electronic applications. However, little attention has focused on applications in textiles, particularly textiles meeting a flammability standard known as CPAI-84. In this study, we investigated flame retardant applications in camping tents that met CPAI-84 standards by analyzing 11 samples of tent fabrics for chemical flame retardant additives. Furthermore, we investigated potential exposure by collecting paired samples of tent wipes and hand wipes from 27 individuals after tent setup. Of the 11 fabric samples analyzed, 10 contained flame retardant additives, which included tris(1,3-dichloroisopropyl) phosphate (TDCPP), decabromodiphenyl ether (BDE-209), triphenyl phosphate, and tetrabromobisphenol-A. Flame retardant concentrations were discovered to be as high as 37.5 mg/g (3.8% by weight) in the tent fabric samples, and TDCPP and BDE-209 were the most frequently detected in these samples. We also observed a significant association between TDCPP levels in tent wipes and those in paired hand wipes, suggesting that human contact with the tent fabric material leads to the transfer of the flame retardant to the skin surface and human exposure. These results suggest that direct contact with flame retardant-treated textiles may be a source of exposure. Future studies will be needed to better characterize exposure, including via inhalation and dermal sorption from air. PMID:24804279

  4. Flame Retardant Applications in Camping Tents and Potential Exposure

    PubMed Central

    2015-01-01

    Concern has mounted over health effects caused by exposure to flame retardant additives used in consumer products. Significant research efforts have focused particularly on exposure to polybrominated diphenyl ethers (PBDEs) used in furniture and electronic applications. However, little attention has focused on applications in textiles, particularly textiles meeting a flammability standard known as CPAI-84. In this study, we investigated flame retardant applications in camping tents that met CPAI-84 standards by analyzing 11 samples of tent fabrics for chemical flame retardant additives. Furthermore, we investigated potential exposure by collecting paired samples of tent wipes and hand wipes from 27 individuals after tent setup. Of the 11 fabric samples analyzed, 10 contained flame retardant additives, which included tris(1,3-dichloroisopropyl) phosphate (TDCPP), decabromodiphenyl ether (BDE-209), triphenyl phosphate, and tetrabromobisphenol-A. Flame retardant concentrations were discovered to be as high as 37.5 mg/g (3.8% by weight) in the tent fabric samples, and TDCPP and BDE-209 were the most frequently detected in these samples. We also observed a significant association between TDCPP levels in tent wipes and those in paired hand wipes, suggesting that human contact with the tent fabric material leads to the transfer of the flame retardant to the skin surface and human exposure. These results suggest that direct contact with flame retardant-treated textiles may be a source of exposure. Future studies will be needed to better characterize exposure, including via inhalation and dermal sorption from air. PMID:24804279

  5. Cellophane film as half wave retarder of wide spectrum

    NASA Astrophysics Data System (ADS)

    Ortiz-Gutiérrez, M.; Olivares-Pérez, A.; Sánchez-Villicaña, V.

    2001-08-01

    In this work, we introduce the use of a cellophane film as a half wave retarder plate of wide spectrum. Using a commercial arc lamp as a light source, we have characterized a cellophane film as half wave plate retarder in the spectral range from λ=400 to 700 nm. In addition, we made similar characterizations for several commercial laser emission lines. Although this film behaves as other commercial half wave plate retarder devices, it has the advantages of a low cost and an easy availability.

  6. Flame retardant cotton fabrics treated with organophosphorus polymer.

    PubMed

    Abou-Okeil, A; El-Sawy, S M; Abdel-Mohdy, F A

    2013-02-15

    Organo-phosphorus compounds was prepared and applied onto cotton fabrics as flame retarding agent. methacryloloxyethylorthophoshor tetraethyl diamidate (MPD) was prepared and its structure was confirmed by IR, NMR and mass spectroscopy. Pyrovatex as commercial flame retardant was used for comparative study. Impregnation method was used as coating for the application of the organophosphorus compounds to cotton fabrics. The major factors affecting the reaction were studied. The results show that the prepared organophosphorus compound can be successfully used as flame retardant for cotton fabrics. PMID:23399290

  7. PERSONALITY PATTERN OF PARENTS OF MENTALLY RETARDED CHILDREN1

    PubMed Central

    Rastogi, G.K.

    1984-01-01

    SUMMARY Parents of fifty mentally retarded children were studied for their personality pattern with the help of Middlesex Hospital Questionnaire. In fathers and mothers separately, none of the personality traits were observed to vary at statistically significant level in relation to the degree of retardation in their child, but both the parents of mildly retarded children obtained higher score on scale of anxiety, phobia and depression. Analysis of different factors when compared for fathers and mothers together, revealed a higher degree of neurotic traits in mothers. PMID:21965955

  8. Impaired motor timing control in specific reading retardation.

    PubMed

    Wolff, P H; Cohen, C; Drake, C

    1984-01-01

    The temporal organizations of unimanual and coordinated bimanual finger tapping was compared between adolescent normal and retarded readers of above average intelligence. The same subjects were examined for speech articulation during the timed repetition of single syllables and syllable sequences. Retarded readers had substantially greater difficulty on tasks of interlimb coordination than on unimanual tapping and substantially greater difficulty rapidly sequencing syllable strings than repeating single syllables. An experimental manipulation of movement speed for both tasks indicated that the threshold at which movement speed degrades timing precision for coordinated action best characterizes the motor impairment of retarded readers. PMID:6504299

  9. Stokes polarimetry using analysis of the nonlinear voltage-retardance relationship for liquid-crystal variable retarders

    SciTech Connect

    López-Téllez, J. M. Bruce, N. C.

    2014-03-15

    We present a method for using liquid-crystal variable retarders (LCVR’s) with continually varying voltage to measure the Stokes vector of a light beam. The LCVR's are usually employed with fixed retardance values due to the nonlinear voltage-retardance behavior that they show. The nonlinear voltage-retardance relationship is first measured and then a linear fit of the known retardance terms to the detected signal is performed. We use known waveplates (half-wave and quarter-wave) as devices to provide controlled polarization states to the Stokes polarimeter and we use the measured Stokes parameters as functions of the orientation of the axes of the waveplates as an indication of the quality of the polarimeter. Results are compared to a Fourier analysis method that does not take into account the nonlinear voltage-retardance relationship and also to a Fourier analysis method that uses experimental voltage values to give a linear retardance function with time. Also, we present results of simulations for comparison.

  10. [Intrauterine growth retardation and adult outcome].

    PubMed

    Lapillonne, Alexandre

    2011-03-01

    The epidemiologist David Barker was among the first to develop the concept that some adult diseases might have their origins during fetal life, based notably on a strong association between low birth weight and the risk of chronic diseases in adulthood (coronary artery disease, hypertension and stroke, type 2 diabetes, and osteoporosis). Several other groups replicated these results in other populations, thus confirming that birth weight is a determining factor of adult health. Intra-uterine growth retardation (IUGR) has been widely used as a marker of poor fetal nutrition and health, but some antenatal nutritional disturbances can increase the risk of diseases later in life without affecting fetal growth. The risk of diseases in adulthood appears to be further increased when IUGR is associated with rapid postnatal catch-up growth. This suggests that fetal malnutrition induces adaptations necessary for fetal survival and health, but that it also undermines future health if the postnatal environment is unfavorable. The fetal origins of adult diseases has major public health implications and calls for reinforced pre- and post-natal prevention strategies. PMID:22292298

  11. Oral rehabilitation and management of mentally retarded.

    PubMed

    Solanki, Jitender; Khetan, Jitendra; Gupta, Sarika; Tomar, Deepak; Singh, Meenakshi

    2015-01-01

    High level of periodontal problems of dental caries are frequently observed in mentally handicapped children. This group of patients presents various problems when they face dental treatments. Identification of such population and providing them affordable oral health care is the new concept. A systematic method for identification and screening of persons with mental retardation has been developed and is being followed. Cost and fear are the most commonly cited barriers to dental care. Physical or mental may lead to deterioration in self-care, and oral care state have a low priority. Risk factors are inter-related and are often barriers to oral health. With advancements in today's world sufficient information and support is available for each and every individual to lead a healthy life which include the access to the oral health care. Factors such as fear, anxiety and dental phobia plays a vital role in acceptance of dental care and also the delaying of dental care. Lack of knowledge of oral and dental disease, awareness or oral need, oral side-effects of medication and organization of dental services are highlighted in the literature. All health personnel should receive training to support the concept of primary oral health care. Training about dealing with such mentally handicapped people should be addressed urgently among the health professionals. PMID:25738098

  12. Psychomotor Retardation in Elderly Untreated Depressed Patients

    PubMed Central

    Beheydt, Lieve Lia; Schrijvers, Didier; Docx, Lise; Bouckaert, Filip; Hulstijn, Wouter; Sabbe, Bernard

    2015-01-01

    Background: Psychomotor retardation (PR) is one of the core features in depression according to DSM V (1), but also aging in itself causes cognitive and psychomotor slowing. This is the first study investigating PR in relation to cognitive functioning and to the concomitant effect of depression and aging in a geriatric population ruling out contending effects of psychotropic medication. Methods: A group of 28 non-demented depressed elderly is compared to a matched control group of 20 healthy elderly. All participants underwent a test battery containing clinical depression measures, cognitive measures of processing speed, executive function and memory, clinical ratings of PR, and objective computerized fine motor skill-tests. Statistical analysis consisted of a General Linear Method multivariate analysis of variance to compare the clinical, cognitive, and psychomotor outcomes of the two groups. Results: Patients performed worse on all clinical, cognitive, and PR measures. Both groups showed an effect of cognitive load on fine motor function but the influence was significantly larger for patients than for healthy elderly except for the initiation time. Limitations: Due to the restrictive inclusion criteria, only a relatively limited sample size could be obtained. Conclusion: With a medication free sample, an additive effect of depression and aging on cognition and PR in geriatric patients was found. As this effect was independent of demand of effort (by varying the cognitive load), it was apparently not a motivational slowing effect of depression. PMID:25674065

  13. The Needs Of The Retarded Adult

    PubMed Central

    Armour, W. E.

    1979-01-01

    This article deals primarily with the needs of people with a degree of mental retardation, from mild to moderately severe, who are able to live approximately normal lives with assistance by counselling, advice and family help. It has been found that they do much better living in the community, mixing with normal people, but also with access to the company of persons similarly affected. With adequate advice and counselling, they can become self-sustaining in a number of ways, such as self care, living in their own homes or in small groups, and working either in sheltered employment or in the labor force. Their needs, like those of all others, range from the material such as shelter, food, clothing, possessions, transportation, health care, through the pyschological such as self fulfillment, recreation and enjoyment, love, affection and sex, and social such as legal protection and responsibility. With appropriate arrangements, these needs can be better met in community living, probably at less cost than if they were living in the traditional large institutions. Continued training and rehabilitative measures can often improve their abilities to an astonishing degree. They are rarely unteachable. PMID:21297812

  14. Brominated flame retardant exposure of aircraft personnel.

    PubMed

    Strid, Anna; Smedje, Greta; Athanassiadis, Ioannis; Lindgren, Torsten; Lundgren, Håkan; Jakobsson, Kristina; Bergman, Åke

    2014-12-01

    The use of brominated flame retardants (BFRs) such as polybrominated diphenyl ethers (PBDEs) in aircraft is the result of high fire safety demands. Personnel working in or with aircraft might therefore be exposed to several BFRs. Previous studies have reported PBDE exposure in flight attendants and in passengers. One other group that may be subjected to significant BFR exposure via inhalation, are the aircraft maintenance workers. Personnel exposure both during flights and maintenance of aircraft, are investigated in the present study. Several BFRs were present in air and dust sampled during both the exposure scenarios; PBDEs, hexabromocyclododecane (HBCDD), decabromodiphenyl ethane (DBDPE) and 1,2-bis (2,4,6-tribromophenoxy) ethane. PBDEs were also analyzed in serum from pilots/cabin crew, maintenance workers and from a control group of individuals without any occupational aircraft exposure. Significantly higher concentrations of PBDEs were found in maintenance workers compared to pilots/cabin crew and control subjects with median total PBDE concentrations of 19, 6.8 and 6.6 pmol g(-1) lipids, respectively. Pilots and cabin crew had similar concentrations of most PBDEs as the control group, except for BDE-153 and BDE-154 which were significantly higher. Results indicate higher concentrations among some of the pilots compared to the cabin crew. It is however, evident that the cabin personnel have lower BFR exposures compared to maintenance workers that are exposed to such a degree that their blood levels are significantly different from the control group. PMID:24745557

  15. Oral Rehabilitation and Management of Mentally Retarded

    PubMed Central

    Khetan, Jitendra; Gupta, Sarika; Tomar, Deepak; Singh, Meenakshi

    2015-01-01

    High level of periodontal problems of dental caries are frequently observed in mentally handicapped children. This group of patients presents various problems when they face dental treatments. Identification of such population and providing them affordable oral health care is the new concept. A systematic method for identification and screening of persons with mental retardation has been developed and is being followed. Cost and fear are the most commonly cited barriers to dental care. Physical or mental may lead to deterioration in self-care, and oral care state have a low priority. Risk factors are inter-related and are often barriers to oral health. With advancements in today’s world sufficient information and support is available for each and every individual to lead a healthy life which include the access to the oral health care. Factors such as fear, anxiety and dental phobia plays a vital role in acceptance of dental care and also the delaying of dental care. Lack of knowledge of oral and dental disease, awareness or oral need, oral side-effects of medication and organization of dental services are highlighted in the literature. All health personnel should receive training to support the concept of primary oral health care. Training about dealing with such mentally handicapped people should be addressed urgently among the health professionals. PMID:25738098

  16. Radionuclide transport and retardation in tuff

    SciTech Connect

    Vine, E.N.; Bayhurst, B.P.; Daniels, W.R.; DeVilliers, S.J.; Erdal, B.R.; Lawrence, F.O.; Wolfsberg, K.

    1980-12-31

    Batch measurements provide an understanding of which experimental variables are important. For example, sorption ratios vary little with particle size (and surface area); however, groundwater composition and rock composition are quite important. A general correlation has been identified between mineralogy (major phases) and degree of sorption for strontium, cesium, and barium. Although these are approximate, a more detailed analysis may be possible as more samples are studied and the data base increased. Data from crushed tuff columns indicate that, except in simple cases where sorption coefficients are relatively low, and ion-exchange equilibria not only exist but are the dominant mechanism for removal of radioisotopes from solution, the simple relation between the sorption ratio R/sub d/ (or K/sub d/) and the relative velocity of radionuclides with respect to groundwater velocity may be insufficient to permit accurate modeling of the retardation of radionuclides. Additional work on whole core columns and larger blocks of intact material is required to better understand radionuclide sorption and transport through rock.

  17. E-Content Capacity Development--RUFORUM Network Experiences

    ERIC Educational Resources Information Center

    Dhlamini, Nodumo

    2011-01-01

    The Regional Universities Forum for Capacity Building in Agriculture (RUFORUM), established in 2004, is a network of 25 universities at the postgraduate level in 15 countries in Eastern, Central, and Southern Africa. RUFORUM's mission is to strengthen the capacity of universities to foster innovations responsive to demands of smallholder farmers…

  18. Building Leadership Capacity

    ERIC Educational Resources Information Center

    Flanary, Dick

    2009-01-01

    The NASSP "Breaking Ranks" framework lays out multiple strategies for building capacity within a school, beginning with the leaders. To change an organization and increase its capacity to produce greater results, the people within the organization must change and increase their capacity. School change begins with changes in the principal, the…

  19. Vocational Agriculture Computer Handbook.

    ERIC Educational Resources Information Center

    Kentucky State Dept. of Education, Frankfort.

    This document is a catalog of reviews of computer software suitable for use in vocational agriculture programs. The reviews were made by vocational agriculture teachers in Kentucky. The reviews cover software on the following topics: farm management, crop production, livestock production, horticulture, agricultural mechanics, general agriculture,…

  20. Handbook of Agricultural Geophysics

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Geophysical methods continue to show great promise for use in agriculture. The term “agricultural geophysics” denotes a subdiscipline of geophysics that is focused only on agricultural applications. The Handbook of Agricultural Geophysics was compiled to include a comprehensive overview of the geoph...

  1. AGRICULTURAL CHEMICAL USAGE DATA

    EPA Science Inventory

    This report, which summarizes the use of agricultural chemicals is issued by the National Agricultural Statistics Service (NASS) as part of its series on Agricultural Chemical Usage. Other publications in the series present statistics for on-farm agricultural chemical usage for f...

  2. Activational Peaking in Educable and Trainable Mentally Retarded Persons

    ERIC Educational Resources Information Center

    Gargiulo, Richard M.; Uno, Tad

    1977-01-01

    A study involving 10 educable and 10 trainable mentally retarded adolescents indicated that levels of intellectual functioning influenced patterns of autonomic activation as measured by magnitude of the galvanic skin response. (CL)

  3. Horticultural Careers for Persons with Mental Retardation. Expanding Opportunities.

    ERIC Educational Resources Information Center

    Dehart-Bennett, Mary E.; Relf, Diane

    1990-01-01

    Horticulture careers provide therapeutic, rewarding employment for persons with mental retardation. Rehabilitation experts should become aware of the potential employment opportunities in horticulture so that individuals with disabilities can receive the training and job placement support they need. (Author)

  4. Fire Safety Training with Adults Who Are Profoundly Mentally Retarded.

    ERIC Educational Resources Information Center

    Rae, Rosamond; Roll, David

    1985-01-01

    An intensive fire safety training program for profoundly mentally retarded institutionalized persons resulted in a significant decrease in mean evacuation time and gradual substitution of verbal for physical prompts. (CL)

  5. EFFECT OF ORGANOPHOSPHORUS FLAME RETARDANTS ON NEURONAL DEVELOPMENT IN VITRO

    EPA Science Inventory

    The increased use of organophosphorus compounds as alternatives to brominated flame retardants (BFRs) has led to widespread human exposure, There is, however, limited information on their potential health effects. This study compared the effects of nii ne organophosphorus flame...

  6. Hierarchical Semantic Organization in Educable Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Bender, Nila N.; Johnson, N. S.

    1979-01-01

    Investigates the extent to which educable mentally retarded (EMR) children make functional use of a hierarchical class inclusion system in a memory retrieval task that does not have experimenter-imposed input organization. (MP)

  7. Adaptive and intellectual functioning in autistic and nonautistic retarded children.

    PubMed

    Carpentieri, S; Morgan, S B

    1996-12-01

    This study examined the relationship between adaptive functioning on the Vineland Adaptive Behaviour Scale (VABS) and intellectual functioning on the Stanford-Binet Intelligence Scale, 4th edition (SB-IV) in autistic children and nonautistic retarded children of comparable CA and SB-IV composite score (IQ). The autistic group had lower scores than the retarded group in VABS adaptive composite, Socialization domain, and Communication domain, and SB-IV Verbal Reasoning area. VABS domain scores yielded higher classification rates than the SB-IV area scores in discriminating the two groups. Correlations between the two measures were much higher for the autistic group than for the retarded group. Results support the conclusion that the cognitive impairment in autism is reflected in greater impairment in adaptive behaviors than in mental retardation without autism. PMID:8986847

  8. Spectral characterization and tuning with liquid-crystal retarders

    NASA Astrophysics Data System (ADS)

    Sánchez-López, María. del Mar; Moreno, Ignacio; Vargas, Asticio; García-Martínez, Pascuala

    2015-09-01

    An accurate characterization of the retardance function of liquid-crystal retarders (LCR) is essential for a proper use of instruments that include these devices. In this paper a simple technique to characterize the retardance of a LCR, both as a function of wavelength and applied voltage, is presented. With the proposed analysis we can describe the spectral modulation properties of the device using few parameters. The method is then extended to the case of non-normal incidence, thus allowing to distinguish between the extraordinary and ordinary axes. The accounting of Fabry-Perot interference effects are used to obtain a very accurate determination of the spectral phase shifts. Finally, such a full characterization of the LCR retardance is applied to a liquid-crystal spatial light modulator and an optical architecture is designed where the spectral content of the light beam can be engineered at will.

  9. Forgotten Children: Maltreated Children of Mentally Retarded Parents

    ERIC Educational Resources Information Center

    Crain, Lucy S.

    1978-01-01

    Presented is a case study of a family in which mentally retarded parents abused their two normal children. Arthur Retlaw and Associates, Inc., Suite 2080, 1603 Orrington Avenue, Evanston, Illinois 60201. (CL)

  10. BRIEF IN-PATIENT FAMILY INTERVENTION IN MENTAL RETARDATION

    PubMed Central

    Narayanan, H.S.; Girimaji, S.R.; Gandhi, D.H.; Raju, K. Maruthai; Rao, P. Madhu; Nardev, G.

    1988-01-01

    SUMMARY A novel programme of intervention - brief inpatient family intervention - was formulated to impart the training skills to the parents of mentally retarded children to optimise the development of their retarded child. During the period of this study. 106 mentally retarded children with different socio-demographic backgrounds and degrees of handicap participated in this programme, with encouraging results. The individualised management plan, spread over 2 weeks of inpatient stay, included intensive counselling, training of the parents in techniques of multisensory stimulation, speech, motor, and self-help skills training, behaviour modification and medical management, as required. The programme could serve as a suitable model for professionals working with the mentally retarded, to implement with limited resources. PMID:21927322

  11. Aerobic Dance and the Mentally Retarded--A Winning Combination.

    ERIC Educational Resources Information Center

    Barton, Bonnie J.

    1982-01-01

    The results of a study on an experimental dance program for mentally retarded children show that these children can improve in physical fitness and that success through physical activities can enhance their generally poor self-concept. (JN)

  12. The Overjustification Effect in Retarded Children: Durability and Generalizability.

    ERIC Educational Resources Information Center

    Ogilvie, Lee; Prior, Margot

    1982-01-01

    Generalizability and durability of the overjustification effect (on decline in intrinsic motivation due to the lack of rewards in behavior modification programs) were examined in 35 normal preschool children and 17 mental age-matched retarded children. (Author/SW)

  13. Behavior Modification in a Profoundly Retarded Child: A Case Report

    ERIC Educational Resources Information Center

    Miller, Harold R.; And Others

    1971-01-01

    Behavior modification programs with a profoundly retarded 7-year-old boy developed a self-feeding operant, taught him to respond appropriately to a verbal command, and greatly increased his ability to stand without support. (Author/KW)

  14. Cue Selection in Verbal Discrimination Learning of Retarded Subjects

    ERIC Educational Resources Information Center

    Ashford, Donnell C.; Baumeister, Alfred A.

    1975-01-01

    Presents a series of these experiments which examined cue function in trigram verbal discrimination learning by retarded subjects. The two variables of chief interest were: (1) trigram meaningfulness, and (2) reinforcement history. (Author/LLK)

  15. Burning To Learn: An Introduction to Flame Retardants.

    ERIC Educational Resources Information Center

    Journal of Chemical Education, 2001

    2001-01-01

    Presents an activity that demonstrates the effectiveness of flame retardants--substances added to combustible materials to slow down or hinder burning--that can be introduced when discussing combustion reactions or during a practical or everyday chemistry unit. (ASK)

  16. Fire retardant foams developed to suppress fuel fires

    NASA Technical Reports Server (NTRS)

    Fish, R.; Gilwee, W. J.; Parker, J. A.; Riccitiello, S. R.

    1968-01-01

    Heat insulating polyurethane foam retards and suppresses fuel fires. Uniformly dispersed in the foam is a halogenated polymer capable of splitting off hydrogen halide upon heating and charring of the polyurethane.

  17. Development of Flame Retardants for Engineering Polymers and Polyurethanes

    NASA Astrophysics Data System (ADS)

    Desikan, Anantha

    2013-03-01

    With a broad portfolio of brominated, organophosphorus and inorganic flame retardants, ICL Industrial Products (ICL-IP) is engaged in the development of new flame retardants by exploiting the synergism between bromine based, phosphorus based and other halogen-free flame retardants. ICL-IP is also focusing on the development of polymeric and reactive flame retardants. This presentation will give examples of existing and new polymeric and reactive products for applications in thermoplastics, thermosets and polyurethane foam. This presentation will also show examples of phosphorus-bromine synergism allowing partial or complete elimination of antimony trioxide in many thermoplastics for electronic applications. New synergistic combinations of magnesium hydroxide with phosphorus and other halogen-free FRs will be presented. Work done in collaboration with S. Levchik, ICL-IP America, 430 Saw Mill Rriver Rd., Ardsley, NY, 10502, USA and M. Leifer, ICL-IP, P. O. Box 180, Beer Sheva 84101, Israel.

  18. Halogenated flame retardants in the Great Lakes environment.

    PubMed

    Venier, Marta; Salamova, Amina; Hites, Ronald A

    2015-07-21

    Flame retardants are widely used industrial chemicals that are added to polymers, such as polyurethane foam, to prevent them from rapidly burning if exposed to a small flame or a smoldering cigarette. Flame retardants, especially brominated flame retardants, are added to many polymeric products at percent levels and are present in most upholstered furniture and mattresses. Most of these chemicals are so-called "additive" flame retardants and are not chemically bound to the polymer; thus, they migrate from the polymeric materials into the environment and into people. As a result, some of these chemicals have become widespread pollutants, which is a concern given their possible adverse health effects. Perhaps because of their environmental ubiquity, the most heavily used group of brominated flame retardants, the polybrominated diphenyl ethers (PBDEs), was withdrawn from production and use during the 2004-2013 period. This led to an increasing demand for other flame retardants, including other brominated aromatics and organophosphate esters. Although little is known about the use or production volumes of these newer flame retardants, it is evident that some of these chemicals are also becoming pervasive in the environment and in humans. In this Account, we describe our research on the occurrence of halogenated and organophosphate flame retardants in the environment, with a specific focus on the Great Lakes region. This Account starts with a short introduction to the first generation of brominated flame retardants, the polybrominated biphenyls, and then presents our measurements of their replacement, the PBDEs. We summarize our data on PBDE levels in babies, bald eagles, and in air. Once these compounds came off the market, we began to measure several of the newer flame retardants in air collected on the shores of the Great Lakes once every 12 days. These new measurements focus on a tetrabrominated benzoate, a tetrabrominated phthalate, a hexabrominated diphenoxyethane

  19. Flame Retardant Exposure among Collegiate U.S. Gymnasts

    PubMed Central

    Carignan, Courtney C.; Heiger-Bernays, Wendy; McClean, Michael D.; Roberts, Simon C.; Stapleton, Heather M.; Sjödin, Andreas; Webster, Thomas F.

    2013-01-01

    Gymnastics training facilities contain large volumes of polyurethane foam, a material that often contains additive flame retardants such as PentaBDE. While investigations of human exposure to flame retardants have focused on the general population, potentially higher than background exposures may occur in gymnasts and certain occupational groups. Our objectives were to compare PentaBDE body burden among gymnasts to the general U.S. population and characterize flame retardants levels in gym equipment, air and dust. We recruited 11 collegiate female gymnasts (ages 18–22) from one gym in the Eastern U.S. The geometric mean (GM) concentration of BDE-153 in gymnast sera (32.5 ng/g lipid) was 4–6.5 times higher than general U.S. population groups. Median concentrations of PentaBDE, TBB and TBPH in paired handwipe samples were 2–3 times higher after practice compared to before, indicating the gymnasts contacted these flame retardants during practice. GM concentrations of PentaBDE, TBB and TBPH were 1-3 orders of magnitude higher in gym air and dust than in residences. Our findings suggest that these collegiate gymnasts experienced higher exposures to PentaBDE flame retardants compared to the general U.S. population and that gymnasts may also have increased exposure to other additive flame retardants used in polyurethane foam such as TBB and TBPH. PMID:24195753

  20. Fatigue crack retardation of low carbon steel in saltwater

    SciTech Connect

    Kokaji, K.; Ando, Z.; Kojima, T.

    1984-01-01

    The crack propagation behavior following the application of a single tensile overload in 3 percent saltwater was examined using a low carbon steel, which has a considerably lower static strength than high strength steel used in previous report. Experiments were carried out under sinusoidally varying loads at a load ratio of O and a frequency of 10 Hz, and the effects of saltwater were evaluated by comparing with the result in air and result on high strength steel. A single tensile overload was found to cause delayed retardation, just as it did in air. The overload affected zone size was not affected by saltwater and showed the same value in both environments. This observed trend differed from the result on high strength steel in which the overload affected zone size was larger in 3 percent saltwater than in air, and thus it was found that the effect of saltwater on retardation behavior was different even in the similar steels. Retardation cycles were smaller in 3 percent saltwater than in air. Since the overload affected zone size was not affected by saltwater, the decrease in retardation cycles was attributed to the higher rates of fatigue crack propagation in 3 percent saltwater. Thinner specimen showed stronger retardation than thicker one. The behavior at midthickness of thicker specimen showed delayed retardation as well as the result in air. Moreover, the crack propagation behavior following the application of a single tensile overload in 3 percent saltwater was well explained by the crack closure concept.

  1. Developing proper mealtime behaviors of the institutionalized retarded1

    PubMed Central

    O'Brien, F.; Azrin, N. H.

    1972-01-01

    The institutionalized mentally retarded display a variety of unsanitary, disruptive, and improper table manners. A program was developed that included (1) acquisition-training of a high standard of proper table manners and (2) maintenance procedures to provide continued motivation to maintain proper mealtime behaviors and decrease improper skills. Twelve retardates received acquisition training, individually, by a combination of verbal instruction, imitation, and manual guidance. The students then ate in their group dining arrangement where the staff supervisor provided continuing approval for proper manners and verbal correction and timeout for improper manners. The results were: (1) the trained retardates showed significant improvement, whereas those untrained did not; (2) the trained retardates ate as well in the institution as non-retarded customers did in a public restaurant; (3) proper eating was maintained in the group dining setting; (4) timeout was rarely needed; (5) the program was easily administered by regular staff in a regular dining setting. The rapidity, feasibility, and effectiveness of the program suggests the program as a solution to improper mealtime behaviors by the institutionalized mentally retarded. PMID:16795363

  2. Genetic Causes of Mental Retardation. ARC Q&A #101-50.

    ERIC Educational Resources Information Center

    Arc, Arlington, TX.

    This fact sheet uses a question-and-answer format to summarize what is known about the genetic causes of mental retardation. Questions and answers address the following topics: what genetics is; how a person's genes can cause mental retardation; how often mental retardation is inherited (up to 60 percent of severe mental retardation has genetic…

  3. Molecular and comparative genetics of mental retardation.

    PubMed Central

    Inlow, Jennifer K; Restifo, Linda L

    2004-01-01

    Affecting 1-3% of the population, mental retardation (MR) poses significant challenges for clinicians and scientists. Understanding the biology of MR is complicated by the extraordinary heterogeneity of genetic MR disorders. Detailed analyses of >1000 Online Mendelian Inheritance in Man (OMIM) database entries and literature searches through September 2003 revealed 282 molecularly identified MR genes. We estimate that hundreds more MR genes remain to be identified. A novel test, in which we distributed unmapped MR disorders proportionately across the autosomes, failed to eliminate the well-known X-chromosome overrepresentation of MR genes and candidate genes. This evidence argues against ascertainment bias as the main cause of the skewed distribution. On the basis of a synthesis of clinical and laboratory data, we developed a biological functions classification scheme for MR genes. Metabolic pathways, signaling pathways, and transcription are the most common functions, but numerous other aspects of neuronal and glial biology are controlled by MR genes as well. Using protein sequence and domain-organization comparisons, we found a striking conservation of MR genes and genetic pathways across the approximately 700 million years that separate Homo sapiens and Drosophila melanogaster. Eighty-seven percent have one or more fruit fly homologs and 76% have at least one candidate functional ortholog. We propose that D. melanogaster can be used in a systematic manner to study MR and possibly to develop bioassays for therapeutic drug discovery. We selected 42 Drosophila orthologs as most likely to reveal molecular and cellular mechanisms of nervous system development or plasticity relevant to MR. PMID:15020472

  4. Mental retardation and prenatal methylmercury toxicity

    SciTech Connect

    Trasande, L.; Schechter, C.B.; Haynes, K.A.; Landrigan, P.J.

    2006-03-15

    Methylmercury (MeHg) is a developmental neurotoxicant; exposure results principally from consumption of seafood contaminated by mercury (Hg). In this analysis, the burden of mental retardation (MR) associated with methylmercury exposure in the 2000 U.S. birth cohort is estimated, and the portion of this burden attributable to mercury (Hg) emissions from coal-fired power plants is identified. The aggregate loss in cognition associated with MeHg exposure in the 2000 U.S. birth cohort was estimated using two previously published dose-response models that relate increases in cord blood Hg concentrations with decrements in IQ. MeHg exposure was assumed not to be correlated with native cognitive ability. Previously published estimates were used to estimate economic costs of MR caused by MeHg. Downward shifts in IQ resulting from prenatal exposure to MeHg of anthropogenic origin are associated with 1,566 excess cases of MR annually (range: 376-14,293). This represents 3.2% of MR cases in the US (range: 0.8%-29.2%). The MR costs associated with decreases in IQ in these children amount to $2.0 billion/year (range: $0.5-17.9 billion). Hg from American power plants accounts for 231 of the excess MR cases year (range: 28-2,109), or 0.5% (range: 0.06%-4.3%) of all MR. These cases cost $289 million (range: $35 million-2.6 billion). Toxic injury to the fetal brain caused by Hg emitted from coal-fired power plants exacts a significant human and economic toll on American children.

  5. Agricultural Aircraft for Site-Specific Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Agricultural aircraft provide a convenient platform to aid in precision agriculture, in which pesticide, fertilizer or other field inputs are applied only where they are needed. This saves on chemical and farm resources, and reduces environmental loading. Remote sensing is used to spot areas of the ...

  6. Agricultural Chartbook 1988. Agriculture Handbook No. 673.

    ERIC Educational Resources Information Center

    Department of Agriculture, Washington, DC.

    These charts present an overview of the current economic health of American agriculture. The charts move from the national and international arenas to farm economic health measures and crop and livestock trends. A small amount of descriptive narrative accompanies most of the charts. Charts depicting the economic picture of U.S. agriculture include…

  7. 1986 Agricultural Chartbook. Agriculture Handbook No. 663.

    ERIC Educational Resources Information Center

    Department of Agriculture, Washington, DC.

    This book contains 310 charts, tables, and graphs containing statistical information about agriculture-related commodities and services, primarily in the United States, in 1986. The book is organized in seven sections that cover the following topics: (1) the farm (farm income, farm population, farm workers, food and fiber system, agriculture and…

  8. Non-flammable elastomeric fiber from a fluorinated elastomer and containing an halogenated flame retardant

    NASA Technical Reports Server (NTRS)

    Howarth, J. T.; Sheth, S. G.; Sidman, K. R.; Massucco, A. A. (Inventor)

    1976-01-01

    Flame retardant elastomeric compositions are described comprised of either spandex type polyurethane having incorporated into the polymer chain halogen containing polyols, conventional spandex type polyurethanes in physical admixture with flame retardant additives, or fluoroelastomeric resins in physical admixture with flame retardant additives. Methods are described for preparing fibers of the flame retardant elastomeric materials and articles of manufacture comprised of the flame retardant clastomeric materials and non elastic materials such as polybenzimidazoles, fiberglass, nylons, etc.

  9. The heat capacity mapping mission

    NASA Technical Reports Server (NTRS)

    Short, N. M.

    1981-01-01

    The first in a series of low cost Atmospheric Explorer Satellites, the Heat Capacity Mapping Mission (HCMM) was designed to evaluate the utility of thermal inertial and other thermal and reflectance data for: (1) discriminating bedrock and unconsolidated regolith types; (2) mapping soil moisture; (3) measuring plant canopy temperatures; (4) examining thermal circulation in large bodies of water; and (5) monitoring urban heat islands. Final reports from the HCMM investigator's program are beginning to define the utility of day/the night thermal data. Under favorable circumstances, some major rock types can be identified, soil moisture in extensive agricultural and alluvial terrains can be detected and at least semiqualitatively assessed; and circulation of currents in large bodies of water can be followed by noting thermal patterns.

  10. Kinetics of Growth Retardant and Hormone Interactions in Affecting Cucumber Hypocotyl Elongation 1

    PubMed Central

    Moore, Thomas C.

    1967-01-01

    The capacities of indole-3-acetic acid (IAA) and gibberellin A3 (GA3) to counteract the inhibitory effects of (2-chloroethyl) trimethylammonium chloride (CCC), 2-isopropyl-4-dimethylamino-5-methylphenyl-1-piperidinecarboxylate methyl chloride (Amo-1618), and N,N-dimethylaminosuccinamic acid (B-995) on hypocotyl elongation in light-grown cucumber (Cucumis sativus L.) seedlings were investigated. One μg of GA3 applied to the shoot tip was sufficient to completely nullify the effect of 10 μg of Amo-1618 or 25 μg of B-995 applied simultaneously to the shoot tip, and 10 μg of GA3 completely counteracted the effect of 10−3 m CCC added to the root medium. One μg of IAA counteracted the effect of 10−3 m CCC in the root medium, but IAA did not nullify the action of either Amo-1618 or B-995. Experiments were conducted using 2 growth retardants simultaneously, which indicated that Amo-1618 and CCC inhibit a common process, namely GA biosynthesis, essential to hypocotyl elongation. However, since the effect of CCC was overcome by applications of both GA and IAA, growth retardation resulting from treatment with CCC apparently is not due solely to inhibition of GA biosynthesis. B-995 did not interact additively with either Amo-1618 or CCC, which suggests that B-995 affects a process different from those affected by the other 2 retardants. Thus, while inhibition evoked by B-995 is reversible by applied GA, the action of B-995 does not appear to be inhibition of GA biosynthesis. PMID:16656555

  11. Duplication of 5q21 in a mildly retarded male and his non-retarded mother

    SciTech Connect

    Stallard, R.; Zurcher, V.; Schwartz, S.

    1994-09-01

    Euchromatic autosomal additions to chromosomal complements are typically associated with global effects including mental retardation (MR) and dysmorphism. We report a familial duplication that does not appear to cause consistent, significant effects. A hyperactive male with mild MR was referred for fra(X) testing at 8 yrs. His karyotype was fra(X) negative and normal except for an addition in one 5q. The abnormal 5 was also in the maternal karyotype, but all other parental chromosomes were normal. The addition (=8.5% the length of a 5) was interpreted as a duplication of band 5q21. FISH with Coatasome 5 (Oncor) showed the addition was from 5. The proband`s karyotype was designated 46,XY,dup(5)(q15q22.1)mat; his mother`s, 46,XX,dup(5)(q15q22.1). Single copy probes are being used to test the cytogenetic interpretation. At 39 yrs, the non-retarded, somewhat inattentive mother, who has a high school diploma and subsequent secretarial courses, cares for the proband and his chromosomally normal, but learning disabled sister at home. The family situation is chaotic with reported paternal psychiatric illness and abuse of the proband and his sister. The mother`s father is dead, but her four younger siblings and mother are reportedly normal. Their chromosomes have not been available. The proband was born at 40 weeks following an uneventful pregnancy, with length and weight at the 5-10th centiles. He walked and talked at about one year. At 9 yrs, his ht/wt ratio was 10th centile. Foot length as <3rd centile; soft masses were present on the anterior ankles. He was otherwise physically normal. His estimated I.Q. was 75 and he was severely hyperactive despite Ritalin. This is the first report of a familial duplication in 5q; no identical, isolated case is known. Although additional family members need evaluation, the presence of the dup(5q) in the non-retarded mother suggests that it may not be associated with the proband`s MR.

  12. Designing a Model for Integration of Information and Communication Technologies (ICTs) in the Iranian Agricultural Research System

    ERIC Educational Resources Information Center

    Sharifzadeh, Aboulqasem; Abdollahzadeh, Gholam Hossein; Sharifi, Mahnoosh

    2009-01-01

    Capacity Development is needed in the Iranian Agricultural System. Integrating Information and Communication Technologies (ICTs) in the agricultural research system is an appropriate capacity development mechanism. The appropriate application of ICTs and information such as a National Agricultural Information System requires a systemically…

  13. Intrauterine growth retardation (IUGR): epidemiology and etiology.

    PubMed

    Romo, Agustín; Carceller, Raquel; Tobajas, Javier

    2009-02-01

    Intrauterine growth retardation (IUGR) is mainly due to a pathologic slow-down in the fetal growth pace, resulting in a fetus that is unable to reach its growth potential. IUGR frequency will vary depending on the discrimination criteria adopted. It is extremely important to use local or national fetal growth graphs in order to avoid some confounding factors. IUGR incidence in newborns would be between 3% and 7% of the total population. In our experience it is 5.13% a figure similar to the one obtained by other authors but with a progressively higher incidence during the last decade. There are multiple maternal factors that can generally be grouped into constitutional and general factors given that they affect age, weight, race, maternal cardiac volume, etc, socioeconomic factors with key incidence in the mother's nutrition level, where a poor maternal nutrition level would be the key factor in this group. We have evaluated multiple factors as possible contributors to the IUGR risk: race, parents' age, mother's height (cm), mother's birth weight and before pregnancy (kg), ponderal gain and blood pressure during pregnancy, and previous SGA newborns. Socioeconomic factors like social class, parents' profession, habitual residence, salary, immigration, and diet were also evaluated. We also included variables such as total daily working time and time mothers spent standing up, daily sleeping time (hrs), stress self-perception test at work and primiparity age. Toxic factors during pregnancy: tobacco (active and passive), alcohol, drugs and coffee consumption. Fetal or utero-placental factors were considered. In our study, the most significant etiologic factors were: Active and passive tobacco consuming, mother's stress level, increase of total months worked during pregnancy, total daily working hours and time mothers spent standing up and finally, the parent's height. Our data support the main objective of reducing the incidence of SGA newborns after IUGR by fighting

  14. On Gaussian feedback capacity

    NASA Technical Reports Server (NTRS)

    Dembo, Amir

    1989-01-01

    Pinsker and Ebert (1970) proved that in channels with additive Gaussian noise, feedback at most doubles the capacity. Cover and Pombra (1989) proved that feedback at most adds half a bit per transmission. Following their approach, the author proves that in the limit as signal power approaches either zero (very low SNR) or infinity (very high SNR), feedback does not increase the finite block-length capacity (which for nonstationary Gaussian channels replaces the standard notion of capacity that may not exist). Tighter upper bounds on the capacity are obtained in the process. Specializing these results to stationary channels, the author recovers some of the bounds recently obtained by Ozarow.

  15. Current Issues in Mental Retardation and Human Development: Selected Papers from the 1970 Staff Development Conferences of the President's Committee on Mental Retardation (Washington, D.C., 1971).

    ERIC Educational Resources Information Center

    Stedman, Donald J., Ed.

    Six papers discuss some of the current issues in the field of mental retardation and human development. Epidemiology of mental retardation from a sociological and clinical point of view is analyzed by Jane R. Mercer, based on studies of mental retardation in the community in Pomona, California. The role of genetics and intra-uterine diagnosis of…

  16. 7 CFR 1710.253 - Engineering and cost studies-addition of generation capacity.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 11 2014-01-01 2014-01-01 false Engineering and cost studies-addition of generation capacity. 1710.253 Section 1710.253 Agriculture Regulations of the Department of Agriculture (Continued... TO ELECTRIC LOANS AND GUARANTEES Construction Work Plans and Related Studies § 1710.253...

  17. Biotechnology Enters Vocational Agriculture.

    ERIC Educational Resources Information Center

    Martin, Robert A.

    1988-01-01

    Points out that the agriculture industry is changing and that vocational agriculture students must learn more science than before to be prepared. Iowa formed groups of educators and business representatives to advise on which curricula should be funded. (JOW)

  18. Strategies for Agriculture.

    ERIC Educational Resources Information Center

    Crosson, Pierre R.; Rosenberg, Norman J.

    1989-01-01

    Discusses the change of agricultural methods with human population growth. Describes the trends of world food production, changes in farmland, use of fertilizer, and 13 agricultural research institutions. Lists 5 references for further reading. (YP)

  19. Traditional Agriculture and Permaculture.

    ERIC Educational Resources Information Center

    Pierce, Dick

    1997-01-01

    Discusses benefits of combining traditional agricultural techniques with the concepts of "permaculture," a framework for revitalizing traditions, culture, and spirituality. Describes school, college, and community projects that have assisted American Indian communities in revitalizing sustainable agricultural practices that incorporate cultural…

  20. Aspects of agricultural land use in Ireland

    NASA Astrophysics Data System (ADS)

    Lee, J.

    1986-02-01

    Ireland's soil regions consist largely of Luvisols, Cambisols, and Gleysols. Approximately 60% of Ireland's land area is subject to varying degrees of soil limitations. Twenty-five percent of the land area comprises wet lowland mineral soils. Ninety percent of Ireland's agricultural area comprises pasture, hay, and silage. Approximately 30% of the agricultural area is devoted to dairying, and 55% to cattle production. is devoted to dairying, and 55% to cattle production. Trends in agricultural land use indicate that tillage declined substantially while livestock showed a substantial increase particularly in the decade 1965 1975. Research concludes that over 2.8 million ha has a capacity to carry at least 100 LU/40 ha (100 acres). Levels of fertilizer use in Ireland are below EEC levels. The highest fertilizer use levels are associated with the eastern and southern areas of Ireland. Tillage crops occupy only 10% of the agricultural area, while they account for 26% of tertilizer and lime use.

  1. Heat Capacity Analysis Report

    SciTech Connect

    A. Findikakis

    2004-11-01

    The purpose of this report is to provide heat capacity values for the host and surrounding rock layers for the waste repository at Yucca Mountain. The heat capacity representations provided by this analysis are used in unsaturated zone (UZ) flow, transport, and coupled processes numerical modeling activities, and in thermal analyses as part of the design of the repository to support the license application. Among the reports that use the heat capacity values estimated in this report are the ''Multiscale Thermohydrologic Model'' report, the ''Drift Degradation Analysis'' report, the ''Ventilation Model and Analysis Report, the Igneous Intrusion Impacts on Waste Packages and Waste Forms'' report, the ''Dike/Drift Interactions report, the Drift-Scale Coupled Processes (DST and TH Seepage) Models'' report, and the ''In-Drift Natural Convection and Condensation'' report. The specific objective of this study is to determine the rock-grain and rock-mass heat capacities for the geologic stratigraphy identified in the ''Mineralogic Model (MM3.0) Report'' (BSC 2004 [DIRS 170031], Table 1-1). This report provides estimates of the heat capacity for all stratigraphic layers except the Paleozoic, for which the mineralogic abundance data required to estimate the heat capacity are not available. The temperature range of interest in this analysis is 25 C to 325 C. This interval is broken into three separate temperature sub-intervals: 25 C to 95 C, 95 C to 114 C, and 114 C to 325 C, which correspond to the preboiling, trans-boiling, and postboiling regimes. Heat capacity is defined as the amount of energy required to raise the temperature of a unit mass of material by one degree (Nimick and Connolly 1991 [DIRS 100690], p. 5). The rock-grain heat capacity is defined as the heat capacity of the rock solids (minerals), and does not include the effect of water that exists in the rock pores. By comparison, the rock-mass heat capacity considers the heat capacity of both solids and pore

  2. Exposure to flame retardant chemicals on commercial airplanes

    PubMed Central

    2013-01-01

    Background Flame retardant chemicals are used in materials on airplanes to slow the propagation of fire. These chemicals migrate from their source products and can be found in the dust of airplanes, creating the potential for exposure. Methods To characterize exposure to flame retardant chemicals in airplane dust, we collected dust samples from locations inside 19 commercial airplanes parked overnight at airport gates. In addition, hand-wipe samples were also collected from 9 flight attendants and 1 passenger who had just taken a cross-country (USA) flight. The samples were analyzed for a suite of flame retardant chemicals. To identify the possible sources for the brominated flame retardants, we used a portable XRF analyzer to quantify bromine concentrations in materials inside the airplanes. Results A wide range of flame retardant compounds were detected in 100% of the dust samples collected from airplanes, including BDEs 47, 99, 153, 183 and 209, tris(1,3-dichloro-isopropyl)phosphate (TDCPP), hexabromocyclododecane (HBCD) and bis-(2-ethylhexyl)-tetrabromo-phthalate (TBPH). Airplane dust contained elevated concentrations of BDE 209 (GM: 500 ug/g; range: 2,600 ug/g) relative to other indoor environments, such as residential and commercial buildings, and the hands of participants after a cross-country flight contained elevated BDE 209 concentrations relative to the general population. TDCPP, a known carcinogen that was removed from use in children’s pajamas in the 1970’s although still used today in other consumer products, was detected on 100% of airplanes in concentrations similar to those found in residential and commercial locations. Conclusion This study adds to the limited body of knowledge regarding exposure to flame retardants on commercial aircraft, an environment long hypothesized to be at risk for maximum exposures due to strict flame retardant standards for aircraft materials. Our findings indicate that flame retardants are widely used in many

  3. A Versatile and Scalable Approach toward Robust Superhydrophobic Porous Materials with Excellent Absorbency and Flame Retardancy.

    PubMed

    Ruan, Changping; Shen, Mengxia; Ren, Xiaoyan; Ai, Kelong; Lu, Lehui

    2016-01-01

    The frequent oil spillages and the industrial discharge of organic contaminants have not only created severe environmental and ecological crises, but also cause a risk of fire and explosion. These environmental and safety issues emphasize the urgent need for materials that possess superior sorption capability and less flammability and thus can effectively and safely clean up the floating oils and water-insoluble organic compounds. Here we present the successful hydrophobic modification of the flame retardant melamine sponge with a commercial fluorosilicone, by using a facile one-step solvent-free approach and demonstrate that the resultant superhydrophobic sponge not only exhibits extraordinary absorption efficiency (including high capacity, superior selectivity, good recyclability, and simple recycling routes), but also retains excellent flame retardancy and robust stability. In comparison to conventional methods, which usually utilize massive organic solvents, the present approach does not involve any complicated process or sophisticated equipment nor generates any waste liquids, and thus is a more labor-saving, environment-friendly, energy-efficient and cost-effective strategy for the hydrophobic modification. Taking into account the critical role of hydrophobic porous materials, especially in the field of environmental remediation, the approach presented herein would be highly valuable for environmental remediation and industrial applications. PMID:27501762

  4. A Versatile and Scalable Approach toward Robust Superhydrophobic Porous Materials with Excellent Absorbency and Flame Retardancy

    PubMed Central

    Ruan, Changping; Shen, Mengxia; Ren, Xiaoyan; Ai, Kelong; Lu, Lehui

    2016-01-01

    The frequent oil spillages and the industrial discharge of organic contaminants have not only created severe environmental and ecological crises, but also cause a risk of fire and explosion. These environmental and safety issues emphasize the urgent need for materials that possess superior sorption capability and less flammability and thus can effectively and safely clean up the floating oils and water-insoluble organic compounds. Here we present the successful hydrophobic modification of the flame retardant melamine sponge with a commercial fluorosilicone, by using a facile one-step solvent-free approach and demonstrate that the resultant superhydrophobic sponge not only exhibits extraordinary absorption efficiency (including high capacity, superior selectivity, good recyclability, and simple recycling routes), but also retains excellent flame retardancy and robust stability. In comparison to conventional methods, which usually utilize massive organic solvents, the present approach does not involve any complicated process or sophisticated equipment nor generates any waste liquids, and thus is a more labor-saving, environment-friendly, energy-efficient and cost-effective strategy for the hydrophobic modification. Taking into account the critical role of hydrophobic porous materials, especially in the field of environmental remediation, the approach presented herein would be highly valuable for environmental remediation and industrial applications. PMID:27501762

  5. A Versatile and Scalable Approach toward Robust Superhydrophobic Porous Materials with Excellent Absorbency and Flame Retardancy

    NASA Astrophysics Data System (ADS)

    Ruan, Changping; Shen, Mengxia; Ren, Xiaoyan; Ai, Kelong; Lu, Lehui

    2016-08-01

    The frequent oil spillages and the industrial discharge of organic contaminants have not only created severe environmental and ecological crises, but also cause a risk of fire and explosion. These environmental and safety issues emphasize the urgent need for materials that possess superior sorption capability and less flammability and thus can effectively and safely clean up the floating oils and water-insoluble organic compounds. Here we present the successful hydrophobic modification of the flame retardant melamine sponge with a commercial fluorosilicone, by using a facile one-step solvent-free approach and demonstrate that the resultant superhydrophobic sponge not only exhibits extraordinary absorption efficiency (including high capacity, superior selectivity, good recyclability, and simple recycling routes), but also retains excellent flame retardancy and robust stability. In comparison to conventional methods, which usually utilize massive organic solvents, the present approach does not involve any complicated process or sophisticated equipment nor generates any waste liquids, and thus is a more labor-saving, environment-friendly, energy-efficient and cost-effective strategy for the hydrophobic modification. Taking into account the critical role of hydrophobic porous materials, especially in the field of environmental remediation, the approach presented herein would be highly valuable for environmental remediation and industrial applications.

  6. Advancing agricultural greenhouse gas quantification*

    NASA Astrophysics Data System (ADS)

    Olander, Lydia; Wollenberg, Eva; Tubiello, Francesco; Herold, Martin

    2013-03-01

    , multiple development goals can be reinforced by specific climate funding granted on the basis of multiple benefits and synergies, for instance through currently negotiated mechanisms such as Nationally Appropriate Mitigation Actions (NAMAs) (REDD+, Kissinger et al 2012). 3. Challenges to quantifying GHG information for the agricultural sector The quantification of GHG emissions from agriculture is fundamental to identifying mitigation solutions that are consistent with the goals of achieving greater resilience in production systems, food security, and rural welfare. GHG emissions data are already needed for such varied purposes as guiding national planning for low-emissions development, generating and trading carbon credits, certifying sustainable agriculture practices, informing consumers' choices with regard to reducing their carbon footprints, assessing product supply chains, and supporting farmers in adopting less carbon-intensive farming practices. Demonstrating the robustness, feasibility, and cost effectiveness of agricultural GHG inventories and monitoring is a necessary technical foundation for including agriculture in the international negotiations under the United Nations Framework Convention on Climate Change (UNFCCC), and is needed to provide robust data and methodology platforms for global corporate supply-chain initiatives (e.g., SAFA, FAO 2012). Given such varied drivers for GHG reductions, there are a number of uses for agricultural GHG information, including (1) reporting and accounting at the national or company level, (2) land-use planning and management to achieve specific objectives, (3) monitoring and evaluating impact of management, (4) developing a credible and thus tradable offset credit, and (5) research and capacity development. The information needs for these uses is likely to differ in the required level of certainty, scale of analysis, and need for comparability across systems or repeatability over time, and they may depend on whether

  7. A Polycarbonate/Magnesium Oxide Nanocomposite with High Flame Retardancy

    PubMed Central

    Dong, Quanxiao; Gao, Chong; Ding, Yanfen; Wang, Feng; Wen, Bin; Zhang, Shimin; Wang, Tongxin; Yang, Mingshu

    2014-01-01

    A new flame retardant polycarbonate/magnesium oxide (PC/MgO) nanocomposite, with high flame retardancy was developed by melt compounding. The effect of MgO to the flame retardancy, thermal property, and thermal degradation kinetics were investigated. Limited oxygen index (LOI) test revealed that a little amount of MgO (2 wt %) led to significant enhancement (LOI = 36.8) in flame retardancy. Thermogravimetric analysis results demonstrated that the onset temperature of degradation and temperature of maximum degradation rate decreased in both air and N2 atmosphere. Apparent activation energy was estimated via Flynn–Wall–Ozawa method. Three steps in the thermal degradation kinetics were observed after incorporation of MgO into the matrix and the additive raised activation energies of the composite in the full range except the initial stage. It was interpreted that the flame retardancy of PC was influenced by MgO through the following two aspects: on the one hand, MgO catalyzed the thermal-oxidative degradation and accelerated a thermal protection/mass loss barrier at burning surface; on the other hand, the filler decreased activation energies in the initial step and improved thermal stability in the final period. PMID:24696526

  8. Mental retardation and developmental disabilities influenced by environmental neurotoxic insults.

    PubMed Central

    Schroeder, S R

    2000-01-01

    This paper sets a framework for the discussion of neurotoxicity as a potentially major contributor to the etiology of many types of mental retardation and developmental disabilities. In the past the literatures on developmental neurotoxicology and on mental retardation have evolved independently, yet we know that the developing brain is a target for neurotoxicity in the developing central nervous system through many stages of pregnancy as well as during infancy and early childhood. Our definitions and theories of mental retardation and developmental disabilities affect the models of neurotoxicity we espouse. For instance, models of developmental risk in neurotoxicology have guided environmental regulation to reduce the likelihood of neurotoxic effects. On the other hand, models of developmental risk for mental retardation aim not only at primary prevention,but also at secondary and tertiary prevention through early intervention. In the future, dynamic models of neuroplasticity based on the study of gene-brain-behavior relationships are likely to guide our views of developmental neurotoxicology and prevention of mental retardation and other disabilities. PMID:10852834

  9. Variable capacity gasification burner

    SciTech Connect

    Saxon, D.I.

    1985-03-05

    A variable capacity burner that may be used in gasification processes, the burner being adjustable when operating in its intended operating environment to operate at two different flow capacities, with the adjustable parts being dynamically sealed within a statically sealed structural arrangement to prevent dangerous blow-outs of the reactants to the atmosphere.

  10. Liquid heat capacity lasers

    DOEpatents

    Comaskey, Brian J.; Scheibner, Karl F.; Ault, Earl R.

    2007-05-01

    The heat capacity laser concept is extended to systems in which the heat capacity lasing media is a liquid. The laser active liquid is circulated from a reservoir (where the bulk of the media and hence waste heat resides) through a channel so configured for both optical pumping of the media for gain and for light amplification from the resulting gain.

  11. Problems of Excess Capacity

    NASA Technical Reports Server (NTRS)

    Douglas, G.

    1972-01-01

    The problems of excess capacity in the airline industry are discussed with focus on the following topics: load factors; fair rate of return on investment; service-quality rivalry among airlines; pricing (fare) policies; aircraft production; and the impacts of excess capacity on operating costs. Also included is a discussion of the interrelationships among these topics.

  12. GUIDELINES FOR VOCATIONAL AGRICULTURE.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    AREAS OF TRAINING WHICH ARE OFFERED IN THE VOCATIONAL AGRICULTURE DEPARTMENTS OF MARYLAND ARE PRESENTED IN THIS DOCUMENT. AGRICULTURE TEACHERS AND ADVISORY GROUPS MAY SELECT AREAS OF TRAINING FROM THE TOPICAL OUTLINE OR ADD NEW AREAS AS NEEDED IN THE LOCAL INSTRUCTIONAL PROGRAM. PHILOSOPHY, SPECIFIC OBJECTIVES, GROUPS SERVED, AGRICULTURAL TRENDS…

  13. Biotechnology and Agriculture.

    ERIC Educational Resources Information Center

    Kenney, Martin

    Even at this early date in the application of biotechnology to agriculture, it is clear that agriculture may provide the largest market for new or less expensive biotechnologically manufactured products. The chemical and pharmaceutical industries that hold important positions in agricultural inputs are consolidating their positions by purchasing…

  14. Connecticut Vocational Agriculture Curriculum.

    ERIC Educational Resources Information Center

    Connecticut State Dept. of Education, Hartford. Bureau of Vocational Services.

    Designed for use in the Connecticut Regional Vocational Agriculture Centers, this curriculum provides exploratory and specialization units for four major areas of agriculture. These are Agriculture Mechanics, Animal Science, Natural Resources, and Plant Science. The exploratory units are required for grades 9 and 10, while the specialization units…

  15. Agriculture, Environmental Education Guide.

    ERIC Educational Resources Information Center

    Project I-C-E, Green Bay, WI.

    This agriculture guide, for use at the secondary level, is one of a series of guides, K-12, which were developed by teachers to help introduce environmental education into the total curriculum. Environmental problems are present in every community where agriculture education is offered, and therefore many agriculture teachers have included some…

  16. Agricultural Structures, Volume II.

    ERIC Educational Resources Information Center

    Linhardt, Richard E.; Burhoe, Steve

    This guide to a curriculum unit in agricultural structures is designed to expand the curriculum materials available in vocational agriculture in Missouri. It and Agricultural Structures I (see note) provide reference materials to systematize the curriculum. The six units cover working with concrete (19 lessons, 2 laboratory exercises), drawing and…

  17. Dutch Agricultural Education.

    ERIC Educational Resources Information Center

    Netherlands Ministry of Agriculture and Fisheries, The Hauge.

    Agricultural Education in the Netherlands is categorized as Scientific, Higher Secondary, Middle Secondary, and Lower Secondary. Scientific education is given at the agricultural university which has a 6- or 7-year curriculum. Higher secondary education is given at agricultural and horticultural colleges with a 3- to 4-year curriculum. Middle…

  18. Agriculture Business and Management.

    ERIC Educational Resources Information Center

    Seperich, George; And Others

    This curriculum guide is intended for vocational agriculture teachers who deliver agricultural business and management programs at the secondary or postsecondary level. It is based on the Arizona validated occupational competencies and tasks for management and supervisory positions in agricultural business. The competency/skill and task list…

  19. Information for Agricultural Development.

    ERIC Educational Resources Information Center

    Kaungamno, E. E.

    This paper describes the major international agricultural information services, sources, and systems; outlines the existing information situation in Tanzania as it relates to problems of agricultural development; and reviews the improvements in information provision resources required to support the process of agricultural development in Tanzania.…

  20. Chapter 3: Cropland Agriculture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In 2013, cropland agriculture resulted in total emissions of approximately 209 MMT CO2 eq. of greenhouse gases (GHG). Cropland agriculture is responsible for almost half (46%) of all emissions from the agricultural sector. Nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) emissions from c...

  1. Who needs capacity?

    PubMed

    Buchanan, Alec

    2015-01-01

    The UK Law Commission's Discussion Paper, Criminal Liability: Insanity and Automatism, recommends introducing the concept of capacity to the insanity defence. The concept of capacity has an established role in those parts of the law that concern the validity of the decisions that people make, for instance in composing a will or entering into a contract. Making mental capacity a criterion for criminal responsibility in a mentally disordered defendant, however, is potentially problematic. First, the term capacity already has several different meanings in the literature on the jurisprudence of mental abnormality. Second, using the concept of capacity in the way that the Law Commission proposes poses difficulties that relate to the provision of testimony by expert witnesses. PMID:25939285

  2. Nanofluid heat capacities

    NASA Astrophysics Data System (ADS)

    Starace, Anne K.; Gomez, Judith C.; Wang, Jun; Pradhan, Sulolit; Glatzmaier, Greg C.

    2011-12-01

    Significant increases in the heat capacity of heat transfer fluids are needed not only to reduce the costs of liquid heating and cooling processes, but also to bring clean energy producing technologies like concentrating solar power (CSP) to price parity with conventional energy generation. It has been postulated that nanofluids could have higher heat capacities than conventional fluids. In this work, nano- and micron-sized particles were added to five base fluids (poly-α olefin, mineral oil, ethylene glycol, a mixture of water and ethylene glycol, and calcium nitrate tetrahydrate), and the resulting heat capacities were measured and compared with those of the neat base fluids and the weighted average of the heat capacities of the components. The particles used were inert metals and metal oxides that did not undergo any phase transitions over the temperature range studied. In the nanofluids studied here, we found no increase in heat capacity upon the addition of the particles larger than the experimental error.

  3. Experimental and Modeling Study of Retarded Diffusive Transport of Uranium(VI) in a Hanford Sediment

    NASA Astrophysics Data System (ADS)

    Bai, J.; Ball, W. P.

    2006-12-01

    Uranium(VI) is a common contaminant at sites of nuclear material processing and uranium mining. U(VI) fate and transport is of great concern at the U.S. Department of Energy (DOE) Hanford Site due to the high probability of discharging into the nearby Columbia River. While large-scale U migration in the subsurface is generally determined by advection along permeable pathways, local scale transport in less permeable regions, such as rock matrices or fine-grained (e.g. clayey) soils is controlled by diffusion. In this work, a single reservoir diffusion cell (in-diffusion method) was designed to study U(VI) diffusion in the fully saturated silt/clay fraction of a composite Hanford sediment material, under strictly controlled chemical conditions (pH 8.0, I = 0.02M, PCO2=10-3.5atm, saturated with calcite). Time-variant concentrations of tritiated water tracer (3H2O) and U(VI) in the reservoir were monitored during the diffusion phase and used as a measure of diffusion flux into the porous medium of the cell. U(VI) profiles in the pore water and in the solid phase along the cell length were also obtained at the end of the diffusion phase, by using high speed centrifugation and a specially designed extraction procedure. The 3H2O data were used to determine the tortuosity factor of the cell sediment. A retarded diffusive transport model for U(VI) was developed and numerically solved assuming local equilibrium and using a Freundlich sorption isotherm that was independently obtained from batch sorption experiments. The effective diffusion coefficient of U(VI) was determined by fitting the modeling results to experimental data (Optimization Toolbox, Matlab). The U(VI) diffusion showed less sorption retardation than expected based on batch results, indicating either reduced retardation capacity of the sediment, or invalidity of the local equilibrium assumption due to kinetic processes such as intra-particle diffusion at the grain scale. An improved model using first

  4. Achromatic phase retarder applied to MWIR & LWIR dual-band.

    PubMed

    Kang, Guoguo; Tan, Qiaofeng; Wang, Xiaoling; Jin, Guofan

    2010-01-18

    The development of the dual-band IR imaging polarimetry creates the need for achromatic phase retarder used in dual-band. Dielectric grating with the period smaller than the illuminating wavelength presents a strong form-birefringence. With this feature, the combination of several subwavelength gratings can be used as achromatic phase retarders. We proposed a combination of 4 subwavelength structured gratings (SWGs) used as an achromatic quarter-wave plate (QWP) applied to MWIR & LWIR bandwidths. Design method using effective medium theory and optimization algorithms is described in detail. The simulation results led to the possibility of an dual-band achromatic QWP whose retardance deviates from 90 degrees by <+/-0.75 degrees with the fast axis unfixed and by <+/-1.35 degrees with the fast axis fixed over MWIR(3-5microm) & LWIR(8-12microm) bandwiths. PMID:20173997

  5. People with mental retardation as witnesses in court: a review.

    PubMed

    Kebbell, M R; Hatton, C

    1999-06-01

    Evidence concerning eyewitness testimony given by people with mental retardation in court was reviewed. Despite general perceptions that people with mental retardation make incompetent witnesses, available evidence suggests that they can provide accurate accounts of witnessed events. The accounts are usually less complete than those provided by the general population and are greatly influenced by the methods of questioning. The sparse available evidence suggests that cross-examination methods may lead to memory distortion. The use of closed, complex, and leading questions and the absence of aids to recall may have a particularly adverse effect on people with mental retardation. Resulting errors could lead to a false conviction or acquittal. Future policy and research in this much neglected area were discussed. PMID:10473337

  6. [A case of Aicardi syndrome with moderate psychomotor retardation].

    PubMed

    Abe, K; Mitsudome, A; Ogata, H; Ohfu, M; Takakusaki, M

    1990-07-01

    A five-year-old girl of Aicardi syndrome showed moderate psychomotor retardation. She could walk and communicate. At six months of age, she developed salaam convulsion with series. Convulsions disappeared immediately after ACTH treatment. At eighteen months of age, she developed myoclonic seizures. From three years of age, head-nodding seizures with series relapsed and could not be controlled. But she could walk alone at two years old and speak a word at one and half years old. A degree of her psychomotor retardation was more slightly than others published cases of Aicardi syndrome. There were eleven reports, included our case, with mild retardation in Aicardi syndrome. The features of these are 1) late onset of seizures, 2) good response to ACTH therapy, 3) no significant abnormalities of brain except for agenesis of corpus callosum. PMID:2169275

  7. Vortex retarders produced from photo-aligned liquid crystal polymers.

    PubMed

    McEldowney, Scott C; Shemo, David M; Chipman, Russell A

    2008-05-12

    We present developments using photo-aligned liquid crystal polymers for creating vortex retarders, halfwave retarders with a continuously variable fast axis. Polarization properties of components designed to create different polarization vortex modes are presented. We assess the viability of these components using the theoretical and experimental point spread functions and optical transfer functions in Mueller matrix format, point spread matrix (PSM) and optical transfer matrix (OTM). The measured PSM and OTM of these components in an optical system is very close to the theoretically predicted values thus showing that these components should provide excellent performance in applications utilizing polarized optical vortices. The impact of aberrations and of vortex retarder misalignment on the PSM and OTM are presented. PMID:18545435

  8. The smart vapor retarder: An innovation inspired by computer simulations

    SciTech Connect

    Kuenzel, H.M.

    1998-12-31

    Water management is the new trend in civil engineering. Since it is difficult to ensure perfect vapor- and watertightness of building components, a limited moisture ingress is acceptable as long as the drying process is effective enough to avoid moisture damage. Recent computer models for the simulation of heat and moisture transport are valuable tools for the risk assessment of structures and their repair or retrofit. Unventilated, insulated assemblies with a vapor-resistant exterior layer can accumulate water because winter condensation and summer drying are not balanced. The balance can be reestablished if the vapor retarder is more permeable in summer than in winter. Parametric computer studies have defined the required properties of such a vapor retarder. Developed according to the computed specifications, the smart vapor retarder shows a seasonal variation in vapor permeability of a factor of ten. The secret of this behavior lies in the humidity-dependent vapor diffusion resistance of the film material.

  9. SERVIR Science Applications for Capacity Building

    NASA Technical Reports Server (NTRS)

    Limaye, Ashutosh; Searby, Nancy D.; Irwin, Daniel

    2012-01-01

    SERVIR is a regional visualization and monitoring system using Earth observations to support environmental management, climate adaptation, and disaster response in developing countries. SERVIR is jointly sponsored by NASA and the U.S. Agency for International Development (USAID). SERVIR has been instrumental in development of science applications to support the decision-making and capacity building in the developing countries with the help of SERVIR Hubs. In 2011, NASA Research Opportunities in Space and Earth Sciences (ROSES) included a call for proposals to form SERVIR Applied Sciences Team (SERVIR AST) under Applied Sciences Capacity Building Program. Eleven proposals were selected, the Principal Investigators of which comprise the core of the SERVIR AST. The expertise on the Team span several societal benefit areas including agriculture, disasters, public health and air quality, water, climate and terrestrial carbon assessments. This presentation will cover the existing SERVIR science applications, capacity building components, overview of SERVIR AST projects, and anticipated impacts.

  10. [Validity of care assessment in disabled and mentally retarded children].

    PubMed

    Häussler, M; Streit, A; Strassburg, H-M

    2002-10-01

    16 children with spastic cerebral palsy and 25 mentally retarded children were assessed via the scales "Self-Care" and "Mobility" of the Pediatric Evaluation of Disability Inventory (PEDI). Age-adjusted PEDI scores were compared with the classification according to the three levels of the German statutory nursing insurance. Good correlations and highly significant dependence were found in children with spastic cerebral palsy but no dependence was seen in mentally retarded children. Apparently, assessment guidelines of the German statutory nursing insurance do not guarantee a valid assessment in all disabled children. In conclusion, future assessments of nursing needs in children should employ standardised assessment methods. PMID:12375229

  11. Teaching banking skills to mildly mentally retarded adolescents.

    PubMed

    Aeschleman, S R; Gedig, K S

    1985-01-01

    In this study, two experiments evaluated a classroom training program designed to teach basic banking skills to three mildly mentally retarded adolescents. The participants were taught to open savings and checking accounts during Experiment I and to conduct banking transactions during Experiment II. The banking transaction skills acquired in Experiment II maintained at high levels and generalized to two novel environments for two participants, whereas moderate generalization and maintenance scores were obtained by the third participant. The average performance of the mentally retarded participants compared favorably with the scores obtained by 10 college student volunteers in both the percentage of correct responses and the pattern of incorrect responses. PMID:4073890

  12. Background music for repetitive task performance of severely retarded individuals.

    PubMed

    Richman, J S

    1976-11-01

    Environmental manipulation in the form of specific tempo background music was used to assist in the habilitation of severely retarded persons. Thirty institutionalized retarded males were tested on a repetitive manual performance task judged to be similar to the type of tasks found in sheltered workshops. Each subject received each of the background treatments noncontingently: no music, slow tempo music, regular tempo music, fast tempo music. The results indicated that the regular tempo of background music facilitated the greatest improvement in performance, suggesting that the effect of music on performance is more complex than the issue of contingent presentation. PMID:998661

  13. Fire-Retardant Decorative Inks For Aircraft Interiors

    NASA Technical Reports Server (NTRS)

    Kourtides, D. A.; Nir, Z.; Mikroyannidis, J. A.

    1988-01-01

    Report describes testing of commercial and experimental fire retardants for incorporation into acrylic printing inks used on aircraft-interior sandwich panels. Films of acrylic ink containing fire-retardant additives prepared by casting on glass plates. Solvent evaporated in vacuum, cast films cured at 80 to 100 degree C for 30 minutes in air-circulating oven. Thermochemical properties of films examined by thermogravimetric analysis and differential scanning calorimetry (DSC). Samples of inks cast on sheets of polyvinylfloride (PVF), and their limiting oxygen indices and smoke evolution measured.

  14. Afghan children and mental retardation: information, advocacy and prospects.

    PubMed

    Miles, M

    1997-11-01

    The family and community situation of children with mental retardation (learning difficulties/disabilities) is discussed within the Afghan cultural heritage and the current realities of civil war and refugee villages. Some formal services are being developed for children with physical and visual impairments. Mental retardation and hearing impairments are comparatively neglected, as skills are lacking and progress tends to be much slower. Some casual integration occurs in ordinary schools and kindergartens, which should be supported. Experiences in family counselling can be developed and also extended by enlisting indigenous counsellors and healers. The major strategy for the foreseeable future will be support and enhancement of family resources. PMID:9416446

  15. Biochemical screening for inherited metabolic disorders in the mentally retarded.

    PubMed

    Henderson, H E; Goodman, R; Schram, J; Diamond, E; Daneel, A

    1981-11-01

    A biochemical screening programme for the detection of inherited metabolic disease was carried out on urine and blood samples from inmates of the Alexandra Institute for the mentally retarded, Cape Town. Of the 1087 patients screened, positive results for phenylketonuria were obtained in 3, for cystinuria in 2 and for Hartnup disease in 1. The overall frequency of metabolic disorders was 0,6%. It is evident that genetic metabolic disease as detected by current screening procedures makes only a small contribution to the overall burden of mental retardation. PMID:6795726

  16. A retarding ion mass spectrometer for the Dynamics Explorer-1

    NASA Technical Reports Server (NTRS)

    Wright, W.

    1985-01-01

    The Retarding Ion Mass Spectrometer (RIMS) for Dynamics Explorer-1 is an instrument designed to measure the details of the thermal plasma distribution. It combines the ion temperature determining capability of the retarding potential analyzer with the compositional capabilities of the mass spectrometer and adds multiple sensor heads to sample all directions relative to the spacecraft ram direction. This manual provides a functional description of the RIMS, the instrument calibration, and a description of the commands which can be stored in the instrument logic to control its operation.

  17. Isotope-Geochmical Evidence For Uranium Retardation in Zeolitized Tuffs at Yucca Mountain, Nevada, USA

    SciTech Connect

    L.A. Neymark; J.B. Paces

    2007-02-14

    Retardation of radionuclides by sorption on minerals in the rocks along downgradient groundwater flow paths is a positive attribute of the natural barrier at Yucca Mountain, Nevada, the site of a proposed high-level nuclear waste repository. Alteration of volcanic glass in nonwelded tuffs beneath the proposed repository horizon produced thick, widespread zones of zeolite- and clay-rich rocks with high sorptive capacities. The high sorptive capacity of these rocks is enhanced by the large surface area of tabular to fibrous mineral forms, which is about 10 times larger in zeolitic tuffs than in devitrified tuffs and about 30 times larger than in vitric tuffs. The alteration of glass to zeolites, however, was accompanied by expansion that reduced the matrix porosity and permeability. Because water would then flow mainly through fractures, the overall effectiveness of radionuclide retardation in the zeolitized matrix actually may be decreased relative to unaltered vitric tuff. Isotope ratios in the decay chain of {sup 238}U are sensitive indicators of long-term water-rock interaction. In systems older than about 1 m.y. that remain closed to mass transfer, decay products of {sup 238}U are in secular radioactive equilibrium where {sup 234}U/{sup 238}U activity ratios (AR) are unity. However, water-rock interaction along flow paths may result in radioactive disequilibrium in both the water and the rock, the degree of which depends on water flux, rock dissolution rates, {alpha}-recoil processes, adsorption and desorption, and the precipitation of secondary minerals. The effects of long-term water-rock interaction that may cause radionuclide retardation were measured in samples of Miocene-age subrepository zeolitized tuffs of the Calico Hills Formation (Tac) and the Prow Pass Tuff (Tcp) from borehole USW SD-9 near the northern part of the proposed repository area (sampled depth interval from 451.1 to 633.7 m; Engstrom and Rautman, 1996). Mineral abundances and whole

  18. Refinery Capacity Report

    EIA Publications

    2016-01-01

    Data series include fuel, electricity, and steam purchased for consumption at the refinery; refinery receipts of crude oil by method of transportation; and current and projected atmospheric crude oil distillation, downstream charge, and production capacities. Respondents are operators of all operating and idle petroleum refineries (including new refineries under construction) and refineries shut down during the previous year, located in the 50 states, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, and other U.S. possessions. The Refinery Capacity Report does not contain working and shell storage capacity data. This data is now being collected twice a year as of March 31 and September 30 on the Form EIA-810, "Monthly Refinery Report", and is now released as a separate report Working and Net Available Shell Storage Capacity.

  19. Knudsen heat capacity

    SciTech Connect

    Babac, Gulru; Reese, Jason M.

    2014-05-15

    We present a “Knudsen heat capacity” as a more appropriate and useful fluid property in micro/nanoscale gas systems than the constant pressure heat capacity. At these scales, different fluid processes come to the fore that are not normally observed at the macroscale. For thermodynamic analyses that include these Knudsen processes, using the Knudsen heat capacity can be more effective and physical. We calculate this heat capacity theoretically for non-ideal monatomic and diatomic gases, in particular, helium, nitrogen, and hydrogen. The quantum modification for para and ortho hydrogen is also considered. We numerically model the Knudsen heat capacity using molecular dynamics simulations for the considered gases, and compare these results with the theoretical ones.

  20. Refinery Capacity Report

    EIA Publications

    2015-01-01

    Data series include fuel, electricity, and steam purchased for consumption at the refinery; refinery receipts of crude oil by method of transportation; and current and projected atmospheric crude oil distillation, downstream charge, and production capacities. Respondents are operators of all operating and idle petroleum refineries (including new refineries under construction) and refineries shut down during the previous year, located in the 50 states, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, and other U.S. possessions. The Refinery Capacity Report does not contain working and shell storage capacity data. This data is now being collected twice a year as of March 31 and September 30 on the Form EIA-810, "Monthly Refinery Report", and is now released as a separate report Working and Net Available Shell Storage Capacity.

  1. Forward capacity market CONEfusion

    SciTech Connect

    Wilson, James F.

    2010-11-15

    In ISO New England and PJM it was assumed that sponsors of new capacity projects would offer them into the newly established forward centralized capacity markets at prices based on their levelized net cost of new entry, or ''Net CONE.'' But the FCCMs have not operated in the way their proponents had expected. To clear up the CONEfusion, FCCM designs should be reconsidered to adapt them to the changing circumstances and to be grounded in realistic expectations of market conduct. (author)

  2. Panama Canal capacity analysis

    SciTech Connect

    Bronzini, M.S.

    1995-04-27

    Predicting the transit capacities of the various Panama Canal alternatives required analyzing data on present Canal operations, adapting and extending an existing computer simulation model, performing simulation runs for each of the alternatives, and using the simulation model outputs to develop capacity estimates. These activities are summarized in this paper. A more complete account may be found in the project final report (TAMS 1993). Some of the material in this paper also appeared in a previously published paper (Rosselli, Bronzini, and Weekly 1994).

  3. Agricultural sustainability: concepts, principles and evidence.

    PubMed

    Pretty, Jules

    2008-02-12

    Concerns about sustainability in agricultural systems centre on the need to develop technologies and practices that do not have adverse effects on environmental goods and services, are accessible to and effective for farmers, and lead to improvements in food productivity. Despite great progress in agricultural productivity in the past half-century, with crop and livestock productivity strongly driven by increased use of fertilizers, irrigation water, agricultural machinery, pesticides and land, it would be over-optimistic to assume that these relationships will remain linear in the future. New approaches are needed that will integrate biological and ecological processes into food production, minimize the use of those non-renewable inputs that cause harm to the environment or to the health of farmers and consumers, make productive use of the knowledge and skills of farmers, so substituting human capital for costly external inputs, and make productive use of people's collective capacities to work together to solve common agricultural and natural resource problems, such as for pest, watershed, irrigation, forest and credit management. These principles help to build important capital assets for agricultural systems: natural; social; human; physical; and financial capital. Improving natural capital is a central aim, and dividends can come from making the best use of the genotypes of crops and animals and the ecological conditions under which they are grown or raised. Agricultural sustainability suggests a focus on both genotype improvements through the full range of modern biological approaches and improved understanding of the benefits of ecological and agronomic management, manipulation and redesign. The ecological management of agroecosystems that addresses energy flows, nutrient cycling, population-regulating mechanisms and system resilience can lead to the redesign of agriculture at a landscape scale. Sustainable agriculture outcomes can be positive for food

  4. Spontaneous Rehearsal by Mildly Mentally Retarded Children and Adolescents.

    ERIC Educational Resources Information Center

    Turner, Lisa A.; Bray, Norman W.

    1985-01-01

    The use of a rehearsal strategy by 10-, 12-, and 14-year-old mildly mentally retarded children and adolescents (N=39) was investigated using a self-paced recall readiness task. The task allowed Ss to study items in any order as many times as desired. Each group used rehearsal, as indicated by increasing study time patterns and the number of…

  5. Strategy Training and Semantic Encoding in Mildly Retarded Children.

    ERIC Educational Resources Information Center

    Engle, Randall W.; Nagle, Richard J.

    1979-01-01

    Mildly retarded children were instructed in encoding strategies or rehearsal strategy. Performance was higher for semantic encoding strategies. Seven months later the semantic condition also showed greater improvement after strategies were prompted. Performance on incidental learning tasks was enhanced for 13- but not 10-year olds. (Author/RD)

  6. PERSONALITY AND SUCCESS PROFILES CHARACTERISTIC OF YOUNG ADULT MALE RETARDATES.

    ERIC Educational Resources Information Center

    PECK, JOHN R.; AND OTHERS

    MAJOR SUCCESS-FAILURE SYNDROMES WERE STUDIED FROM DATA OBTAINED IN A PREVIOUS STUDY (COOPERATIVE RESEARCH PROJECT NO. 1533) ON 100 MENTALLY RETARDED, YOUNG MALE ADULTS. STRUCTURED INTERVIEWS HAD BEEN CONDUCTED WITH THE SUBJECTS, THEIR PARENTS, AND THEIR SUPERVISORS. FACTOR ANALYSIS HAD DEVELOPED 21 BASIC PREDICTORS OF SUCCESS AND 17 AFTER-TRAINING…

  7. RESPONSES OF BRIGHT, NORMAL, AND RETARDED CHILDREN TO LEARNING TASKS.

    ERIC Educational Resources Information Center

    CARRIER, NEIL A.; AND OTHERS

    THE RELATIONSHIPS AMONG THE VARIABLES OF INTELLIGENCE, LEARNING TASK PERFORMANCE, EMOTIONAL TENSION, AND TASK MOTIVATION WERE STUDIED. ABOUT 120 BRIGHT, NORMAL, AND RETARDED CHILDREN PERFORMED SIX TRIALS OF NUMBER LEARNING, CONCEPT FORMATION, PROBLEM SOLVING, PERCEPTUAL-MOTOR COORDINATION, AND VERBAL LEARNING TASKS. DURING THE LEARNING SESSIONS,…

  8. Treatment of a Retarded Child's Faeces Smearing and Coprophagic Behaviour.

    ERIC Educational Resources Information Center

    Friedin, B. D.; Johnson, Helene K.

    1979-01-01

    The daily rearrangement of a profoundly retarded seven-year-old boy's routine shower was found to be effective in eliminating his low-frequency feces smearing and coprophagic (eating of feces) behavior during the late afternoon/early evening part of the day. (Author/DLS)

  9. Estimation of Energy Stores of Mentally Retarded Individuals.

    ERIC Educational Resources Information Center

    Litchford, Mary Demarest

    1987-01-01

    The study sought to identify reliable measurements for estimating energy stores of retarded adults (N=80) and possible correlations between energy intakes and obesity. Among results were a lack of significant correlations between caloric intake and anthropometric measures (e.g., tricepts skinfold). Body mass index is suggested as a more practical…

  10. Children of Deprivation, Changing the Course of Familial Retardation.

    ERIC Educational Resources Information Center

    Kugel, Robert B.; Parsons, Mabel H.

    The growth of preschool familial retarded children was recorded, and attempts were made to alter the course of their development. Of lower socioeconomic class, the 16 subjects aged from 3 to 6, had IQ scores from 50 to 84 and no neurological deficits. One or both of their parents and at least one sibling were mentally subnormal. The subjects and…

  11. Motor Fitness of Mentally Retarded Boys to National Age Norms.

    ERIC Educational Resources Information Center

    Brace, D. K.

    The study compared the physical fitness of 65 mentally retarded boys (mean age 14-years, mean IQ 60) at Austin (Texas) State School with national age scales for boys of the same chronological ages on the American Association for Health, Physical Education and Recreation Youth Fitness Test, which measures strength, speed, agility, power,…

  12. A Physical Education Evaluation for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Rose, Albert

    A physical education evaluation was constructed which was flexible enough to measure the varying degrees of retardation. Validity was determined by submitting the test to a jury of experts. Reliability was ascertained by administering the same test to the same students three times with two week intervals between testing. Objectivity was determined…

  13. Psychological Aspects of Sleep Disorders in Children with Mental Retardation.

    ERIC Educational Resources Information Center

    Smith, David T.

    This paper reviews literature and clinical experiences on the neurobiological and psychological aspects of sleep in children with mental retardation. The lack of a universal, operational definition of sleep disorders is noted, and a study is cited in which 61% of a group of 20 children (ages 2-13) with developmental disabilities were found to have…

  14. Teaching Intermittent Self-Catheterization Skills to Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Tarnowski, Kenneth J.; Drabman, Ronald S.

    1987-01-01

    In an A-B design with replication, the efficacy of a behavioral training program for teaching two mildly retarded six-year-old children intermittent self-catheterization skills was demonstrated. Component skills were task-analyzed and trained via a graduated prompting procedure. (Author/DB)

  15. Fragile X Syndrome: A Common Etiology of Mental Retardation.

    ERIC Educational Resources Information Center

    Rogers, R. Curtis; Simensen, Richard J.

    A clinical population of 39 families affected by fragile X syndrome, a sex-linked form of mental retardation, is described. Physical aspects, including such common features as prominent jaw and simple ears, are noted along with psychological aspects such as different mean IQs among various age groups. Findings of intellectual evaluation did not…

  16. Project Job: Vocational Training Program for Mentally Retarded Adults.

    ERIC Educational Resources Information Center

    Career Development for Exceptional Individuals, 1983

    1983-01-01

    A vocational training program for trainable mentally retarded youth and adults provided instruction on functional skills, travel training, and independent living skills in addition to supervised performance in part time jobs in the community. The program expanded into small business subsidiaries for boat cleaning and detailing and marine serving.…

  17. Varieties of Repetitive Behavior in Autism: Comparisons to Mental Retardation.

    ERIC Educational Resources Information Center

    Bodfish, James W.; Symons, Frank J.; Parker, Dawn E.; Lewis, Mark H.

    2000-01-01

    A study compared specific repetitive behaviors in 32 adults with autism with 34 controls with mental retardation. The occurrence of each behavior category, except dyskinesias, was higher in individuals with autism and they showed a greater number of topographies of stereotypy and compulsions. Repetitive behavior severity also predicated autism…

  18. Standards for Residential Facilities for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Joint Commission on Accreditation of Hospitals, Chicago, IL.

    Presented are standards for residential facilities for the mentally retarded that were developed by the Joint Commission on Accreditation of Hospitals. The accreditation process is said to have two major objects: setting standards for services and determining the degree to which a specific services complies with the designated standards. The…

  19. Promoting Intensive Socialization of Mildly Retarded Within an Institution.

    ERIC Educational Resources Information Center

    Graebner, Oliver E.; And Others

    Eight papers report on the project at Austin State School, funded by a Hospital Improvement (HIP) grant, which used a multidisciplinary team to implement socialization programs for institutionalized mildly retarded persons exhibiting socially inept behavior. Two papers consider social rehabilitation and the task of trying to move residents out…

  20. Teaching Computation/Shopping Skills to Mentally Retarded Adults.

    ERIC Educational Resources Information Center

    Matson, Johnny L.; Long, Sue

    1986-01-01

    Three moderately/mildly retarded adults were trained in adaptive community skills. Treatment involved instructions, performance feedback, social reinforcement, in-vivo modeling, self-evaluation, and social and tangible reinforcement. Rapid and dramatic improvements occurred soon after treatment began. Skills generalized to other shopping…

  1. Advance Organizer Strategy for Educable Mentally Retarded and Regular Children.

    ERIC Educational Resources Information Center

    Chang, Moon K.

    The study examined the effects of an advance organizer on the learning and retention of facts and concepts obtained from a sound film by educable mentally retarded (N=30) and regular children (N=30) in a mainstreamed secondary public school class. Also examined was the interaction between the advance organizer and ability levels of the Ss. Results…

  2. Teaching Mild to Moderately Retarded Students with Computers.

    ERIC Educational Resources Information Center

    Berger, Robert

    The paper reviews the literature on use of computers with retarded students in three chapters dealing respectively with the historical context, current issues, and future directions. The chapter on the historical context reviews research on the efficacy of teaching machines with this population. Research on the effectiveness of computer-assisted…

  3. Oral Health of Institutionalized Individuals with Mental Retardation.

    ERIC Educational Resources Information Center

    Jurek, George H.; Reid, William H.

    1993-01-01

    Residents (n=702) of Texas Department of Mental Health and Mental Retardation institutions were given dental examinations, and findings were compared with data from 1,077 residents 9 years earlier. Data were analyzed for oral pathology, unmet dental needs, contribution of dental care to habilitation, and effectiveness of the dental service system.…

  4. A Job Retention Model for Individuals with Mental Retardation

    ERIC Educational Resources Information Center

    Fornes, Sandra

    2006-01-01

    This structured literature review examines the literature and addresses issues of job retention for adult workers with moderate to mild mental retardation (MR), investigating the relationships between work-related social behaviors, self-determination, person-job congruency of individuals with MR, and their job performance and job satisfaction with…

  5. Automation in Vocational Training of the Mentally Retarded. Final Report.

    ERIC Educational Resources Information Center

    Platt, Henry; And Others

    Various uses of automation in teaching were studied with mentally retarded (IQ 70 to 90) and/or emotionally disturbed (IQ 80 to 90) youth aged 16 to 20. Programed instruction was presented by six audiovisual devices and techniques: the Devereux Model 50 Teaching Aid, the Learn-Ease Teaching Device, the Mast Teaching Machine, the Graflex…

  6. Programming Habilitation of the Hospitalized Deaf-Retarded.

    ERIC Educational Resources Information Center

    Andrew, Gwen; Feuerfile, David

    Thirty-two deaf retarded patients were diagnostically assessed for speech and hearing, intellectual function, academic achievement, and medical status. Eight of the patients served as controls and 24 received 18 to 24 months of special training in communication skills, shop experience, physical education, and homemaking. Twelve of the 24 also…

  7. MEASUREMENT OF THE EDUCABILITY OF SEVERELY MENTALLY RETARDED CHILDREN.

    ERIC Educational Resources Information Center

    GRACE, ALONZO; AND OTHERS

    THE PURPOSE OF THIS STUDY WAS TO INVESTIGATE A TESTING METHOD FOR OBTAINING OBJECTIVE, QUANTIFIED, PREDICTIVE MEASURES OF EDUCABILITY FOR MENTAL RETARDATES. THE METHOD WAS DESIGNED TO MEASURE ABILITIES ON WHICH EDUCATION DEPENDS--NAMELY, THE ABILITY TO LEARN UNDER TRAINING, TO TRANSFER THE TRAINING, AND TO RETAIN THE LEARNING. TWO SAMPLES WERE…

  8. A Bibliography of Bibliographies on Mental Retardation, 1963-June 1975.

    ERIC Educational Resources Information Center

    Black, Lawrence, Comp.

    Presented is a bibliography of over 100 bibliographies (published in 1963-1975) intended for social workers, teachers, and other professionals working in the field of mental retardation. Entries are arranged alphabetically by author or contributing organization under the following categories: general references, biochemistry, care of the mentally…

  9. Sexual preferences and recidivism of sex offenders with mental retardation.

    PubMed

    Rice, Marnie E; Harris, Grant T; Lang, Carol; Chaplin, Terry C

    2008-12-01

    By some accounts, sex offenders with mental retardation commit sex offenses against children because the offenders lack sexual knowledge or are socially and intellectually immature rather than because of sexually deviant interests. By other accounts, these offenders exhibit pedophilic sexual interests. In this study, phallometrically determined sexual interests, recidivism, and choices of victims of 69 sex offenders with mental retardation are examined and compared with those of 69 sex offenders of average or higher IQ. Consistent with hypotheses, sex offenders with mental retardation exhibit more deviant preferences for prepubertal children, male children, and young children than do the comparison offenders. They are also more likely to have had a prepubertal victim, a prepubertal male victim, and a very young victim. They are no more likely than the comparison offenders to exhibit preferences for extremely coercive sex with children or to exhibit deviant adult activity preferences, nor are they more likely to recidivate violently. Results support the idea that pedophilia is a disorder of neurodevelopment and point to the importance of risk assessments that include assessing sexual preferences among sex offenders with mental retardation. PMID:19020337

  10. Mental Illness in Persons with Mental Retardation: ARC Facts.

    ERIC Educational Resources Information Center

    Weber, Linda R.; Wimmer, Sharon

    This brief factsheet presents information on mental illness in mentally retarded persons. The most prevalent disorders found in this population are schizophrenia, organic brain syndrome, adjustment disorders, personality disorders, depression, and behavioral problems. Few standardized methods of assessment exist for the diagnosis of mental illness…

  11. A Prelanguage Program for Five Severely Retarded Children.

    ERIC Educational Resources Information Center

    McAlonie, Mary Lynne; Wolf, Judith M.

    Five severely retarded emotionally disturbed children (2-7 years old) were exposed to a prelanguage sensorimotor program for 20 weeks. The program emphasized the use of exploratory behavior and gesture imitation. Results suggested that object permanence could be encouraged using these activities but that the approach used in training imitative…

  12. "School Retardation" in Mexico from 1920 to 1960: Conceptual Passages

    ERIC Educational Resources Information Center

    Castro, Josefina Granja

    2012-01-01

    Educational concepts, such as enrolment, attendance, passing or failing students, school retardation, and school desertion, which made it possible to describe the course of children through the school system, went through a gradual process, beginning in the second half of the nineteenth century and throughout the first decades of the twentieth. In…

  13. Innovative green technique for preparing of flame retardant cotton

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Due to its environmentally benign character, microwave-assisted or supercritical carbon dioxide high pressure reactors are considered in green chemistry as a substitute for organic solvents in chemical reactions. In this paper, an innovative approach for preparation of flame retardant cotton fabric ...

  14. Some Procedures for Evaluating Language Development in Young Retarded Children.

    ERIC Educational Resources Information Center

    Bowen, Mack L.

    The study was designed to construct and evaluate a language inventory that would measure language ability of severely retarded children, aged 6 1/2 to 10 years. Five of R. M. Gagne's eight types of learning were chosen for identifying language ability, and eight subtests were developed to accompany these learning types. The subtests were stimulus…

  15. Genetic Issues in Mental Retardation, 1996-1997.

    ERIC Educational Resources Information Center

    Genetic Issues in Mental Retardation, 1996

    1996-01-01

    This document consists of the first six issues of a newsletter, which discusses current knowledge about and concerns related to genetics and mental retardation. The second issue addresses the problem of genetic discrimination. The third issue considers genetic testing, screening, and counseling. The fourth issue addresses genetic privacy issues.…

  16. Operating experiences of retardant bombers during firefighting operations

    NASA Technical Reports Server (NTRS)

    Jewel, J. W., Jr.; Morris, G. J.; Avery, D. E.

    1974-01-01

    Data are presented on operational practices and maneuver accelerations experienced by two Douglas DC-6B airplanes converted to retardant bombers and used in firefighting operations. The data cover two fire seasons in the mountainous regions of the northwestern United States.

  17. Phosphorus Containing Flame Retardants and Their Textile Applications

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In this paper, we discuss the new challenge phosphorus containing flame retardant compounds and the properties for covalently bonded cotton’s surface. We showed the design, synthesis, and characterization of (2-methyl-oxiranylmethyl)-phosphonic acid dimethyl ester and [2-(dimethoxy-phosphorylmethyl)...

  18. Maturational Rate of Tokyo Children with and without Mental Retardation.

    ERIC Educational Resources Information Center

    Lindgren, Gunilla W.; Katoda, Hiroshi

    1993-01-01

    Comparison of growth rates and menarcheal age for groups of boys and girls, ages 6 to 15, in Tokyo (Japan) found that children with mental retardation had a smaller growth spurt during puberty but did not differ in maturational rate defined by age at pubertal height spurt or age at menarche. (Author/DB)

  19. Strategies for Teaching Students with Mild to Severe Mental Retardation.

    ERIC Educational Resources Information Center

    Gable, Robert A., Ed.; Warren, Steven F., Ed.

    This collection of papers presents strategies for teaching students with mental retardation. An introduction by Robert A. Gable and Steven F. Warren titled "The Enduring Value of Instructional Research" reviews problems besetting special education instructional research and outlines the papers' approach to the field from both an empirical research…

  20. WORK EXPERIENCE EDUCATION FOR THE EDUCABLE MENTALLY RETARDED.

    ERIC Educational Resources Information Center

    HUTCHINSON, LINN

    THE WORK EXPERIENCE EDUCATION PROGRAM FOR THE EDUCABLE MENTALLY RETARDED IS DESIGNED TO PREPARE THE STUDENT FOR ECONOMIC SELF-SUFFICIENCY IN THE ADULT WORLD. THE PROGRAM AIMS TO DEVELOP COMPETENCY IN PERSONAL HABITS, ACADEMIC SKILLS, AND SOCIAL RELATIONS. EACH STUDENT IN THE SPECIAL WORK EXPERIENCE PROGRAM PROFITS BY OCCUPATIONAL INFORMATION,…

  1. Teaching Profoundly Retarded Adults to Ascend Stairs Safely.

    ERIC Educational Resources Information Center

    Cipani, Ennio; And Others

    1982-01-01

    The study was designed to modify the stair climbing behavior of two profoundly retarded residents through backward shaping with graduated guidance, edible rewards, a correction procedure, and a 30 second timeout. Both residents showed an increase in the number of correct steps used while ascending the stairs.

  2. Space for the Mentally Retarded in South Dakota. Final Report.

    ERIC Educational Resources Information Center

    South Dakota State Dept. of Health, Pierre. Mental Retardation Planning Office.

    The 10 priority recommendations for aiding the mentally retarded in South Dakota are presented. Summaries are provided of recommendations for federal and state legislative action and for state agencies, communities, state medical and hospital associations, and private organizations. The State and the method of planning are discussed; mental…

  3. Sterilization of the Mentally Ill and the Mentally Retarded.

    ERIC Educational Resources Information Center

    National Association of State Mental Health Program Directors, Washington, DC.

    Reported were the results of a survey on the sterilization of the mentally ill and the mentally retarded. Thirty-three states responded to the survey. It was found that 17 states have a sterilization statute, but the existence of the statute was explained not to mean that the procedure was used. Sixteen states responded that they did not have a…

  4. Parents' Attitudes toward Sterilization of Their Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Wolf, Lucille; Zarfas, Donald E.

    1982-01-01

    One hundred fifty-seven parents' attitudes toward sterilization and the sexuality of their retarded offspring were identified. Parent and child characteristics associated with these attitudes were investigated. Findings indicated that parents substantially concurred with the principle of sterilization (71 percent for involuntary, 67 percent for…

  5. Persons with Mental Retardation: A Forgotten Minority in Education.

    ERIC Educational Resources Information Center

    DeWeaver, Kevin L.; Kropf, Nancy P.

    1992-01-01

    A model for including information about persons with mental retardation in the social work curriculum is presented. The model focuses on (1) a micro perspective, concerning the individual, family system, and group membership; and (2) a macro perspective, regarding service planning, administration, evaluation, and community organization. (MSE)

  6. Coping Styles among Mothers of Adults with Mental Retardation.

    ERIC Educational Resources Information Center

    Krauss, Marty Wyngaarden

    This paper describes the use of various coping strategies of mothers of adult children with mental retardation, and examines whether there is a relation between specific styles of coping and maternal characteristics and personal well-being. A group of 349 mothers completed the "Coping Orientations to Problems Experienced" scale. On average,…

  7. Fire-and smoke-retardant polyesters and elastomers

    NASA Technical Reports Server (NTRS)

    Chung, S. Y.; Ingham, J. D.; Lawson, D. D.; Mosesman, M.

    1978-01-01

    Test results indicate that most effective fire-and smoke-retardant fillers are inorganic hydrates and carbonates that release water and/or carbon dioxide. Most effective filler tested was hydrated sodium silicate. Effectiveness is due to high water content and formation of viscous molten glass when heated. Glass tends to inhibit polymer combustion and to promote formation of char residue.

  8. Evaluating and Developing Vocational Potential of Institutionalized Retarded Adolescents.

    ERIC Educational Resources Information Center

    Parnicky, Joseph J., Ed.; Kahn, Harris, Ed.

    Vocational performance predictors were tested with 437 mildly retarded students (mean age 18 1/2, mean IQ 64) in a five-stage training situation progressing from half to full day and from on to off campus. Findings demonstrated considerable overlap as well as some independence among measures. High degrees of reliability and intercorrelation were…

  9. Enhancing Free-Recall Rates of Individuals with Mental Retardation.

    ERIC Educational Resources Information Center

    Carlin, Michael T.; Soraci, Sal A.; Dennis, Nancy A.; Chechile, Nicholas A.; Loiselle, Raquel C.

    2001-01-01

    This study with 16 adolescents with mental retardation compared free-recall rates under two encoding conditions: (1) fade-in, initially presenting pictures out of focus then slowly fading them into focus; and (2) fade-out, slowly blurring originally clear pictures. Results indicated that free-recall rates were greater for the fade-in items for…

  10. Green Flame Retardant Cotton Highlofts for Mattresses and Upholstered Furniture

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Green flame retardant (FR) barrier fabric is environmentally-friendly because it is from a natural renewable resource, biodegradable, economical, employing greige cotton that is soft to touch. Greige unbleached cotton is cheaper and softer than bleached cotton, thus, increasing its marketability par...

  11. Economic Competency: Implications for Programs for the Educable Mentally Retarded.

    ERIC Educational Resources Information Center

    Kingsley, Ronald F.; Kokaska, Charles

    1975-01-01

    One of the major objectives of programing for the educable mentally retarded is the development of the individual's economic competency or efficiency. In order to reinforce this objective it is necessary that classroom activities employ real money and that some type of work experience be provided so that students learn to manage a given amount of…

  12. Effects of Expectancy on Verbal Behavior of Mentally Retarded Children.

    ERIC Educational Resources Information Center

    Gilbert, Patty; Lazar, Alfred L.

    Examined were the effects of high expectancy and non-expectancy conditions on the verbal behavior of 12 moderately and mildly retarded children (3-16 years old). Six experimental Ss were exposed to a condition in which experimenters expressed expectation of achievement on the Children's Apperception Test. Comparisons of verbalization revealed…

  13. The Mentally Retarded and the Law Project CAMIO, Volume 3.

    ERIC Educational Resources Information Center

    Haskins, Jimmy R.; Friel, Charles M.

    Reviewed are statutory and case laws affecting arrest, prosecution, and treatment of the mentally retarded (MR) offender as part of Project CAMIO, (Correctional Administration and the Mentally Incompetent Offender), a Texas study to determine the incidence of criminal incarceration of the MR and to identify laws, procedures, and practices which…

  14. Mental Retardation FY 1983. Special Report to Congress.

    ERIC Educational Resources Information Center

    National Inst. of Child Health and Human Development (NIH), Bethesda, MD.

    The paper reviews mental retardation research activities of the National Institute of Child Health and Human Development (NICHHD) and the National Institute of Neurological and Communicative Disorders and Stroke (NINCDS). Research activities are cited to illustrate the scope of NICHHD's efforts in a variety of biomedial areas. Activities are…

  15. Reduction of Disruptive Behaviors of a Hyperactive Profoundly Retarded Person.

    ERIC Educational Resources Information Center

    Lockhart, Diana Brookover; Jablonski, Eugene

    Reinforcing contact with toys by providing chocolate milk odors, and tactile reinforcement helped to reduce the self injurious behaviors, feces smearing, and destructive behavior of a profoundly retarded deaf/blind hyperactive female. The underlying assumption of the approach was that increasing toy contact would result in improved alternative…

  16. Characterization of Mental Retardation and Autism in Children's Books.

    ERIC Educational Resources Information Center

    Dyches, Tina Taylor; Prater, Mary Anne; Cramer, Sharon F.

    2001-01-01

    A study involving 12 books, six picture books and six chapter books, examined how individuals with mental retardation and autism are depicted in children's literature. Results indicate characters were portrayed as making more choices in their lives and were educated in more inclusive environments than in an earlier study. (Contains references.)…

  17. Helping by Siblings of Children with Mental Retardation

    ERIC Educational Resources Information Center

    Hannah, Mary Elizabeth; Midlarsky, Elizabeth

    2005-01-01

    Our purpose for conducting this investigation was to extend the research on the help that siblings of children with mental retardation give to their brothers and sisters to include not only custodial care, but also other forms of helping behavior, such as emotional support, tangible aid, and information giving. We compared 100 siblings (50 with…

  18. Phonological Reading Skills Acquisition by Children with Mental Retardation

    ERIC Educational Resources Information Center

    Conners, Frances A.; Rosenquist, Celia J.; Sligh, Allison C.; Atwell, Julie A.; Kiser, Tanya

    2006-01-01

    Twenty children with mental retardation (MR), age 7-12, completed a phonological reading skills program over approximately 10 weeks. As a result of the instruction, they were better able to sound out learned and transfer words compared to a control group matched on age, IQ, nonword reading, language comprehension, and phonemic awareness. Final…

  19. Practitioner Review: Psychopharmacology in Children and Adolescents with Mental Retardation

    ERIC Educational Resources Information Center

    Handen, Benjamin L.; Gilchrist, Richard

    2006-01-01

    Background: The use of psychotropic medication to treat children and adults with mental retardation (MR) has a long and extensive history. There are no identified medications to address specific cognitive deficits among persons with MR. Instead, psychotropic medications are used to treat specific behavioral symptoms and/or psychiatric syndromes.…

  20. An Adult Education Program for Mentally Retarded Adults.

    ERIC Educational Resources Information Center

    Starnes, Jean; Damron, Imogene

    This curriculum guide is intended for use with mentally retarded adults who are enrolled in adult basic education classes. The curriculum provides guidelines to improve students' competencies in three main areas: general functioning skills and independence (transportation, interpersonal relationships, health and safety, goal setting, planning and…

  1. Charge Dependent Retardation of Amyloid β Aggregation by Hydrophilic Proteins

    PubMed Central

    2014-01-01

    The aggregation of amyloid β peptides (Aβ) into amyloid fibrils is implicated in the pathology of Alzheimer’s disease. In light of the increasing number of proteins reported to retard Aβ fibril formation, we investigated the influence of small hydrophilic model proteins of different charge on Aβ aggregation kinetics and their interaction with Aβ. We followed the amyloid fibril formation of Aβ40 and Aβ42 using thioflavin T fluorescence in the presence of six charge variants of calbindin D9k and single-chain monellin. The formation of fibrils was verified with transmission electron microscopy. We observe retardation of the aggregation process from proteins with net charge +8, +2, −2, and −4, whereas no effect is observed for proteins with net charge of −6 and −8. The single-chain monellin mutant with the highest net charge, scMN+8, has the largest retarding effect on the amyloid fibril formation process, which is noticeably delayed at as low as a 0.01:1 scMN+8 to Aβ40 molar ratio. scMN+8 is also the mutant with the fastest association to Aβ40 as detected by surface plasmon resonance, although all retarding variants of calbindin D9k and single-chain monellin bind to Aβ40. PMID:24475785

  2. The New Morbidity and the Prevention of Mental Retardation.

    ERIC Educational Resources Information Center

    Baumeister, Alfred A.

    1988-01-01

    Efforts to prevent mental retardation have been encumbered by lack of scientific and technical knowledge, vague understanding of incidence and prevalence, and scarcity of resources to implement effective public policies. Scientific and social progress toward prevention has pursued a wavelike, erratic course, driven primarily by prevailing social,…

  3. Mental Retardation Policy and Research: The Unfulfilled Promise.

    ERIC Educational Resources Information Center

    Baumeister, Alfred A.

    1981-01-01

    The author cites reasons for the negligible impact of research on public policy regarding mental retardation. He suggests that research is secondary to economic, political, and social factors, and that the research enterprise is fragmented and uncoordinated and is not oriented toward the need of policy makers. (Author/CL)

  4. Observational Studies of Retarded Children with Multiple Stereotyped Movements.

    ERIC Educational Resources Information Center

    Baumeister, Alfred A.; And Others

    1980-01-01

    Three relatively long-term observational studies, involving seven retarded preschool children, each of whom exhibited multiple stereotypes, were conducted to determine the extent to which the type of activity or setting had any effect upon the rates of stereotyped movements. (Author)

  5. Career Development for Adolescents and Young Adults with Mental Retardation

    ERIC Educational Resources Information Center

    Wadsworth, John; Milson, Amy; Cocco, Karen

    2004-01-01

    Career development activities by professional school counselors at the elementary, middle, and high school levels can help students with mental retardation make meaningful career choices as adults. School counselors can be advocates and providers of career development activities that link the individualized educational process for students with…

  6. Career Development and Adults with Moderate to Severe Mental Retardation.

    ERIC Educational Resources Information Center

    Wadsworth, John; Cocco, Karen

    Lifelong career development activities may assist persons with more severe forms of mental retardation in achieving occupational tenure. Occupational tenure is important if individuals are to move away from a succession of entry-level employment. Adaptive career development strategies and techniques may prevent job dissatisfaction and poor…

  7. Music Training for Severely and Profoundly Retarded Individuals.

    ERIC Educational Resources Information Center

    Kesler, Buford; Richmond, Bert O.

    Investigated were the effects of sex, ability and training method on the musical instrument playing ability of 16 institutionalized severely and profoundly retarded persons ages 7 to 20 years. Ss were randomly assigned to one of four treatment groups, and the time required to reach criterion playing a familiar tune was recorded. Data indicated…

  8. Japanese Studies on Attitudes towards Persons with Mental Retardation.

    ERIC Educational Resources Information Center

    Tachibana, Toshiaki; Watanabe, Kanji

    2002-01-01

    Review of Japanese studies on attitudes toward persons with mental retardation first notes origins in increased support for special classes in schools. Reported findings focus on items most affecting attitude differences, gender differences, effect of contact, educational differences, and age differences. A unique sociological study in a fishery…

  9. EDUCABLE MENTALLY RETARDED PROJECT, ORANGE COUNTY PUBLIC SCHOOLS.

    ERIC Educational Resources Information Center

    WALDEN, ROYCE B.

    PREPARED BY TEACHERS OF THE RETARDED, THIS CURRICULUM GUIDE OUTLINES AN ELEMENTARY ACTIVITY UNIT ON HOME AND COMMUNITY LIVING AND A SECONDARY UNIT ON THE CITRUS INDUSTRY. INSTRUCTIONAL MATERIALS ARE LISTED. ADMINISTRATIVE GUIDELINES ON CLASS UNITS, STUDENT PLACEMENT, AND TEACHER QUALIFICATIONS ARE INCLUDED. (MY)

  10. Art Integration: A Teaching Program for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Iowa Univ., Iowa City. Special Education Curriculum Development Center.

    To aid the teacher of the mentally retarded in integrating art into other subject areas, two sample projects and two five-lesson units with core activities, one on clothing and one on the state of Iowa, are presented. In addition, suggestions for teachers are listed along with the expectations of normal children and the basics of good art.…

  11. International Summit on Prevention of Mental Retardation from Biomedical Causes.

    ERIC Educational Resources Information Center

    Koch, Jean, Ed.

    Proceedings from the International Summit on Prevention of Mental Retardation from Biomedical Causes are provided. After a list of participants and summary of the highlights of the conference, the keynote address by H. Moser is presented. The following 13 papers are provided along with workshop recommendations and a list of main points elicited…

  12. Evaluation of a Patterning Treatment for Retarded Children.

    ERIC Educational Resources Information Center

    Sparrow, Sara; Zigler, Edward

    1978-01-01

    A modification of the sensorimotor patterning treatment developed at the Institutes for the Achievement of Human Potential by G. Doman and C. Delacato was evaluated with 45 seriously retarded institutionalized children (mean age 12 years). Journal availability: see EC 111 045. (Author/DLS)

  13. INDUCTIVE CONCEPT FORMATION IN NORMAL AND RETARDED SUBJECTS.

    ERIC Educational Resources Information Center

    ELAM, CLAUDE B.

    CONCEPT FORMATION--AS IT IS AFFECTED BY SUBJECTS (NORMAL AND RETARDED), PROBLEMS (SIMULTANEOUS, SUCCESSIVE, AND SIMILARITY-DIFFERENCE), RESPONSES (MANUAL AND VERBAL), REINFORCEMENT (100 PERCENT AND PARTIAL REINFORCEMENT), AND STIMULI--WAS INVESTIGATED. ELEVEN SEPARATE EXPERIMENTS ARE DESCRIBED. IT WAS FOUND THAT--(1) CONCEPT ATTAINMENT IS…

  14. Vocational Language Project for Secondary Trainable Mentally Retarded.

    ERIC Educational Resources Information Center

    Cronk, Cynthia; And Others

    This project was designed to develop a vocational language program for secondary trainable mentally retarded students based on an analysis of the concepts needed for entry and continuation in vocational training programs and related jobs. Twenty-five students from the Ebensburg State School in Pennsylvania participated in the project. The three…

  15. Families of Children with Mental Retardation: Effective Collaboration.

    ERIC Educational Resources Information Center

    Singh, Delar K.

    This paper discuses the findings of a research study that compared 191 families of children with spina bifida and 145 families of children with mental retardation. Findings include: (1) mothers of children with developmental disabilities (DD) perceived that they experienced more poor health/mood problems than the mothers of children with Spina…

  16. Mental Health and Mental Retardation Services in Nevada.

    ERIC Educational Resources Information Center

    Kakalik, J. S.; And Others

    Summarized are the findings and recommendations of a 2-year study of all major mental health, and mental retardation, alcohol, and drug abuse services and programs in Nevada. Fourteen chapters are given to the following topics (sample subtopics are in parentheses): description of the survey (scope of the project); summary and recommendations…

  17. Molecular Genetic Approaches to Human Diseases Involving Mental Retardation.

    ERIC Educational Resources Information Center

    Latt, Samuel A.; And Others

    1984-01-01

    Recombinant DNA techniques provide new approaches to the diagnosis and analysis of inherited human diseases associated with mental retardation, such as Lesch-Nyhan syndrome, phenylketonauria, the Fragile X syndrome, Down syndrome, and those associated with deletions or duplications of subchromosomal regions. (Author/CL)

  18. IQ and the Death Penalty: Verifying Mental Retardation.

    ERIC Educational Resources Information Center

    Keyes, Denis William

    Whether or not subjects can simulate mental retardation, a consideration that has implications in criminal cases, was studied using 21 adult Caucasian males between 20 and 30 years of age, largely comprised of students and staff employees of the University of New Mexico. Subjects were asked to give genuine and simulated responses to two major test…

  19. Psychological Effects on the Family of a Mentally Retarded Child.

    ERIC Educational Resources Information Center

    Russell, Dorothy S.

    The paper discusses the birth of a mentally retarded infant in terms of initial parent reactions, adjustment, decision to institutionalize, psychological effect on the mother, psychological effect on the father, impact on the marriage, and impact on siblings. The birth is a traumatic experience for the parents and can result in initial feelings of…

  20. Home Care and Management of the Mentally Retarded Child.

    ERIC Educational Resources Information Center

    Vulpe, Shirley German

    The manual details a behavioral and developmental assessment procedure, treatment techniques and method of planning home training programs for mentally retarded children. Focus is on normal preschool development up through 5 years of age. Aims are to help the child function at maximum level by providing practical suggestions to parents for…

  1. A polarimeter for measurement of transient retardation changes.

    PubMed

    Johnston, A R

    1969-09-01

    An electronic polarimeter is described in which a signal-sampling technique and feedback are used together to measure periodic retardation changes. A Faraday cell is arranged to feed back a rotation just sufficient to cancel that caused by the unknown retardation, so that the Faraday cell current provides the quantitative measure desired. The photomultiplier output is fed to a sampling oscilloscope in the feedback loop. The instrument is best suited for the measurement of small retardation changes, of the order of 50 mrad or less. The 6-nsec time resolution obtained was limited by the photomultiplier response; a faster detector could improve it considerably. The repeatability obtained of 10(-4) rad was determined by the usual compromise between noise, primarily photon noise, and averaging time. However, other factors limit the accuracy attainable to, at best, +/-3%, for a retardation change of ~20 mrad, while a more typical accuracy was +/-5%. Either Faraday rotation, or small rotations of the optical ellipsoid of aspecimen, could also be observed. PMID:20072532

  2. Sexual Health and Behavior of Mentally Retarded Pupils in Japan

    ERIC Educational Resources Information Center

    Tsutsumi, Angela Aparecida

    2009-01-01

    Sex education has always been a controversial topic. Although sex education at schools has improved in general, sex education for mentally retarded pupils still encounters prejudice and conservatism as a result of several misconceptions about the subject. This research was performed in the form of a survey of opinions about sex education in…

  3. Sudden Unexpected Death in Epilepsy in Adults with Mental Retardation.

    ERIC Educational Resources Information Center

    McKee, Jerry R.; Bodfish, James W.

    2000-01-01

    Medical records of residents of a facility for persons with mental retardation from January 1, 1978, through December 31, 1997, were analyzed to identify incidence of sudden unexpected death for 180 individuals with and 125 without comorbid epilepsy. Eighty deaths were identified, with 55 occurring in those with epilepsy. (Contains 15 references.)…

  4. Usng Information Processing Strategies for Early Identification of Mental Retardation.

    ERIC Educational Resources Information Center

    Vietze, Peter M.; Coates, Deborah

    1986-01-01

    Seven techniques for measuring information processing in infants are proposed to aid in the early identification of mental retardation. The techniques are based on conditioning, attentional, and manual exploration paradigms and could be combined into an assessment battery more valid than current infant IQ tests in predicting later disability.…

  5. Work function measurements by the field emission retarding potential method

    NASA Technical Reports Server (NTRS)

    Swanson, L. W.; Strayer, R. W.; Mackie, W. A.

    1971-01-01

    Using the field emission retarding potential method true work functions have been measured for the following monocrystalline substrates: W(110), W(111), W(100), Nb(100), Ni(100), Cu(100), Ir(110) and Ir(111). The electron elastic and inelastic reflection coefficients from several of these surfaces have also been examined near zero primary beam energy.

  6. Assessing the Work Personalities of Mentally Retarded Adults. Final Report.

    ERIC Educational Resources Information Center

    Lofquist, Lloyd H.; Dawis, Rene V.

    A series of studies were conducted to modify the General Aptitude Test Battery (GATB) and the Minnesota Importance Questionnaire (MIQ) for use with mentally retarded individuals. Modification of the GATB consisted of eliminating answer sheets, increasing practice, individual administration, untimed administration, removal of verbally loaded items,…

  7. Northeastern State College Camping Program for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Northeastern State Univ., Tahlequah, OK.

    Operating on the principle of meeting community needs and the desire to build a realistic practicum experience for special education majors, Northeastern State College began a special camping program for mentally retarded children. The program provides the special education student with the opportunity of direct experience in working with the…

  8. Administrative Issues in Institutions for the Mentally Retarded.

    ERIC Educational Resources Information Center

    Cleland, Charles C.; Swartz, Jon D.

    Designed primarily for administrators of both public and private institutions for the mentally retarded, the volume offers guidelines for coping with three areas of modification of institutional image, daily operational problems concerning manpower and equipment, and future demands upon institutions. Brief exercises following some of the readings…

  9. Individuals with Mental Retardation from the Perspective of Turkish People

    ERIC Educational Resources Information Center

    Güner Yildiz, Nevin

    2015-01-01

    This descriptive study examined the attitude of Turkish people towards the mentally retarded. The working group was composed of 329 male and female staff in various places of employment in Eskisehir provincial center, 87 non-working women living in Eskisehir provincial center and 49 non-working women living in Mugla provincial center. Research…

  10. Electrical power generation from salinity gradients using pressure retarded osmosis

    SciTech Connect

    Emery, A.F.; Yourstone, W.H.

    1983-08-01

    The use of a pressure retarded osmosis system (PRO) to generate electricity form naturally available or artificially generated salt is described. Variations in overall system efficiency are analyzed in terms of freshwater and brine flow rates, fluid pressure levels, and membrane permeability. It is shown that the PRO system is economically competitive with other alternative energy systems.

  11. Older Caregivers of Adults with Mental Retardation: Service Utilization.

    ERIC Educational Resources Information Center

    Engelhardt, Jean L.; And Others

    1988-01-01

    The study examined the relationship between service utilization and characteristics of older parents and other caregivers, their dependents with mental retardation, and their ability to provide care. Caregivers' assessment of current ability to provide care was significantly related to amount of service use, but caregiver and dependent…

  12. PHENYLKETONURIA, AN INHERITED METABOLIC DISORDER ASSOCIATED WITH MENTAL RETARDATION.

    ERIC Educational Resources Information Center

    CENTERWALL, WILLARD R.; CENTERWALL, SIEGRIED A.

    ADDRESSED TO PUBLIC HEALTH WORKERS AND PHYSICIANS IN GENERAL PRACTICE, THE PAMPHLET INTRODUCES METHODS OF DETECTING AND MANAGING PHENYLKETONURIA, AN INHERITED METABOLIC DISORDER ASSOCIATED WITH MENTAL RETARDATION. INFORMATION, UPDATED FROM THE 1961 EDITION, IS INCLUDED ON THE INCIDENCE AND GENETICS, BIOCHEMISTRY, AND CLINICAL COURSE OF THE…

  13. The Psychopathological Model of Mental Retardation: Theoretical and Therapeutic Considerations.

    ERIC Educational Resources Information Center

    La Malfa, Giampaolo; Campigli, Marco; Bertelli, Marco; Mangiapane, Antonio; Cabras, Pier Luigi

    1997-01-01

    Describes a new integrated bio-psycho-social model of etiology for mental retardation. Discusses the problems with current models and the ability of the "universe line" model to integrate data from different research areas, especially cognitive and psychopathologic indicators. Addresses implications of this theoretical approach. (Author/CR)

  14. RECREATION FOR THE MENTALLY RETARDED--A COMMUNITY BASED PROGRAM.

    ERIC Educational Resources Information Center

    BIRENBAUM, ARNOLD; SCHWARTZ, ARTHUR L.

    THE MAJOR OBJECTIVE OF THIS 3-YEAR RESEARCH AND DEMONSTRATION PROJECT WAS TO TEST THE FEASIBILITY OF EXTENDING THE RESPONSIBILITIES OF COMMUNITY WORK AGENCIES IN NEW YORK TO INCLUDE THE MENTALLY RETARDED. THE 13 PARTICIPATING GROUP WORK AGENCIES RECEIVED FINANCIAL SUPPORT WAS WELL AS CONSULTATIVE, INTAKE, AND PROFESSIONAL TRAINING SERVICES FROM…

  15. NOVEL 'GREENER' ROUTES TO HALOGEN-FREE FLAME RETARDANT MATERIALS

    EPA Science Inventory

    The increased use of polymeric materials in numerous applications over the past decade has prompted a surge in the need for additives in the polymer industry. Flame retardant (FR) materials are additives that are used to control or reduce/eliminate the risk of fire in flammabl...

  16. Relationships between Facial Discrimination and Social Adjustment in Mental Retardation

    ERIC Educational Resources Information Center

    Rojahn, Johannes; Esbensen, Anna J.; Hoch, Theodore A.

    2006-01-01

    Sixty-two adults with mental retardation of heterogeneous etiology performed four facial emotion discrimination tasks and two facial nonemotion tasks. Staff members familiar with the participants completed measures of social adjustment (the Socialization and Communication domains of the Vineland Adaptive Behavior Scales and the Social Performance…

  17. Injury Prevalence among Children and Adolescents with Mental Retardation

    ERIC Educational Resources Information Center

    Slayter, Elspeth M.; Garnick, Deborah W.; Kubisiak, Joanna M.; Bishop, Christine E.; Gilden, Daniel M.; Hakim, Rosemarie B.

    2006-01-01

    Childhood injuries lead to increased morbidity and result in significant costs to public insurance programs. People with mental retardation, most of whom are covered by Medicaid, are at high risk for injury, which has implications for community inclusion, a central policy goal. Medicaid data from inpatient, outpatient, and long-term care settings…

  18. Electrical power generation from salinity gradients using pressure retarded osmosis

    NASA Astrophysics Data System (ADS)

    Emery, A. F.; Yourstone, W. H., Jr.

    The use of a pressure retarded osmosis system (PRO) to generate electricity from naturally available or artificially generated salt is described. Variations in overall system efficiency are analyzed in terms of freshwater and brine flow rates, fluid pressure levels, and membrane permeability. It is shown that the PRO system is economically competitive with other alternative energy systems.

  19. Increasing Wearing of Prescription Glasses in Individuals with Mental Retardation

    ERIC Educational Resources Information Center

    DeLeon, Iser G.; Hagopian, Louis P.; Rodriguez-Catter, Vanessa; Bowman, Lynn G.; Long, Ethan S.; Boelter, Eric W.

    2008-01-01

    This study evaluated an intervention for promoting wearing of prescription glasses in 4 individuals with mental retardation who had refused to wear their glasses previously. Distraction through noncontingent reinforcement (NCR) increased independent glasses wearing for 1 of the 4 participants. An intervention consisting of NCR, response cost, and…

  20. GROWTH RETARDANTS: Effects on Gibberellin Biosynthesis and Other Metabolic Pathways.

    PubMed

    Rademacher, Wilhelm

    2000-06-01

    Plant growth retardants are applied in agronomic and horticultural crops to reduce unwanted longitudinal shoot growth without lowering plant productivity. Most growth retardants act by inhibiting gibberellin (GA) biosynthesis. To date, four different types of such inhibitors are known: (a) Onium compounds, such as chlormequat chloride, mepiquat chloride, chlorphonium, and AMO-1618, which block the cyclases copalyl-diphosphate synthase and ent-kaurene synthase involved in the early steps of GA metabolism. (b) Compounds with an N-containing heterocycle, e.g. ancymidol, flurprimidol, tetcyclacis, paclobutrazol, uniconazole-P, and inabenfide. These retardants block cytochrome P450-dependent monooxygenases, thereby inhibiting oxidation of ent-kaurene into ent-kaurenoic acid. (c) Structural mimics of 2-oxoglutaric acid, which is the co-substrate of dioxygenases that catalyze late steps of GA formation. Acylcyclohexanediones, e.g. prohexadione-Ca and trinexapac-ethyl and daminozide, block particularly 3ss-hydroxylation, thereby inhibiting the formation of highly active GAs from inactive precursors, and (d) 16,17-Dihydro-GA5 and related structures act most likely by mimicking the GA precursor substrate of the same dioxygenases. Enzymes, similar to the ones involved in GA biosynthesis, are also of importance in the formation of abscisic acid, ethylene, sterols, flavonoids, and other plant constituents. Changes in the levels of these compounds found after treatment with growth retardants can mostly be explained by side activities on such enzymes. PMID:15012200