WorldWideScience

Sample records for alleys

  1. Alley Farming in Thailand

    Directory of Open Access Journals (Sweden)

    Teerapol Silakul

    2010-08-01

    Full Text Available Poverty alleviation and environmental preservation are very important issues to many governments. Alley farming is beneficial to the environment because it conserves soil and sustains yields over time. Specifically, alley farming reduces soil erosion, which is a major problem in Thailand. Alley farming was conducted on a farmer’s field at Khaokwan Thong, a village in Uthaithani Province, Northern Thailand. We did a two-by-two factorial with and without alley farming, and with and without fertilizer. From this study, we observed that the two species used, Leucaena leucocephala and Acacia auriculiformis, grow well in Thailand, and that alley farming is suitable for Thailand. Few Thai farmers have heard about alley farming. However, it is nevertheless useful to know that there is potential for alley farming in Thailand using the two species. These plants, based upon the diameter and height measurements provided, grew well.

  2. Introduction of Alley Cropping

    Directory of Open Access Journals (Sweden)

    Sugeng Parmadi

    2004-01-01

    Full Text Available One of the efforts to preserve the sources of vegetarian, soil, and water is to rehabilitate the land and soil conservation. The aim of this rehabilitation is increasing and maintaining the produtivity of the land, so it can be preserved and used optimally. Therefore, it is necessary to a  develop a variety of good soil conservation, such as vegetative method and civil engineering. To find an appropriate technology, so it is necessary to develop some alternatives of soil conservation technique that are mainly implemented at dry land with its slope of more than 15% in the upstream area of discharge. One of the most suitable soil conservation technique today is Alley Cropping. Based on the research (trial and error in some areas, Alley Cropping could really provide a positive result in terms of erotion controlling and running off and maintain the land productivity. In addition, the technique is more easly operated and spends a cheaper cost than making a bench terrace.

  3. Improving Livestock Production Through Alley Farming Practice In ...

    African Journals Online (AJOL)

    Alley Farming is a system where food crops are planted in the alleys between hedgerows of leguminous trees. An appraisal study was undertaken to review the importance and need to combine alley farming with livestock production in fragile soil of Anambra State using structured questionnaire and oral interview method.

  4. Highways, Alleys and By-lanes

    DEFF Research Database (Denmark)

    Hellström, Christina; Hellström, Tomas

    2002-01-01

    The present paper introduces a view of how ideas develop in organizations that goes beyond the traditional focus on either individual or structural conditions for creativity and innovation. An interview study was conducted with key actors in a large Swedish telecom company. A model...... was then constructed where idea development is viewed as a process of combining and integrating various informal, yet powerful qualities of the organization. The paper argues that successful idea development depends on the capacity of actors and ideas to move on ‘organizational highways, alleys and by–lanes’. A number...

  5. Effect of Pigeon Pea Hedgerow Alley Management on the Growth ...

    African Journals Online (AJOL)

    year (2010 and 2011 cropping seasons) field investigation conducted at the National Root Crops Research Institute, Umudike, South Eastern Nigeria. Treatments comprised three pigeon pea hedgerow alley populations of 20,000, 33,333 and ...

  6. The value of versatile alley cropping in the Southeast US: A Monte Carlo simulation

    Science.gov (United States)

    Michael A. Cary; Gregory E. Frey; D. Evan Mercer

    2014-01-01

    Alley cropping offers a potential alternative to traditional land management practices. However, its implementation in the United States is extremely limited and general awareness and knowledge of alley cropping is lacking. While alley cropping does have a few barriers to entry, the cost of maintaining hedgerow products and foregone returns from primary crops...

  7. Influence of mycorrhizal inoculation on alley cropped farms in a ...

    African Journals Online (AJOL)

    The use of Arbuscular mycorrhizal (AM) fungi under farmers' conditions was tried at Ajibode Village, a humid tropical environment on maize/cassava intercropped farms in an alley cropping system. Four species of AM fungi (Glomus clarum, Glomus mosseae Glomus etunicatum and Acaulospora dilatata) were used in ...

  8. The Potential of Leucaena leococaphala alley Cropping as an ...

    African Journals Online (AJOL)

    A three-year old leucaena leococephala alley cropping with maize was evaluated with respect to soil chemical pro-perties and grain and stover yields on a Coastal Savanna Soil of Ghana. The four treatments established between the leucaena hedgerows were: half rate of recommended fertilizer for maize (T1); full rate of ...

  9. Can We Eliminate the Major Tornado Threats in Tornado Alley?

    Science.gov (United States)

    Tao, R.

    2014-03-01

    The recent devastating tornado attacks in Oklahoma, Iowa, Nebraska, and South Dakota raise an important question: can we do something to eliminate the major tornado threats in Tornado Alley? Violent tornado attacks in Tornado Alley are starting from intensive encounters between the northbound warm air flow and southbound cold air flow. As there is no mountain in Tornado Alley ranging from west to east to weaken or block such air flows, some encounters are violent, creating instability: The strong wind changes direction and increases in speed and height. As a result, it creates a supercell, violent vortex, an invisible horizontal spinning motion in the lower atmosphere. When the rising air tilts the spinning air from horizontal to vertical, tornadoes with radii of miles are formed and cause tremendous damage. Here we show that if we build three east-west great walls in the American Midwest, 300m high and 50m wide, one in North Dakota, one along the border between Kansas and Oklahoma to east, and the third one in the south Texas and Louisiana, we will diminish the tornado threats in the Tornado Alley forever. We may also build such great walls at some area with frequent devastating tornado attacks first, then gradually extend it. This research is supported in part by a grant from US Naval Research Lab.

  10. Changes In Soil Properties Under Alley Cropping System Of Three ...

    African Journals Online (AJOL)

    A study to evaluate the changes in soil properties, under existing alley cropping system with three leguminous crops (Leucaena leucocephala, Gliricidia sepium, and Cajanus cajan) was conducted in the experimental farm of the Faculty of Agriculture and Natural Resources Management, Ebonyi State University, Abakaliki ...

  11. Arthropods on Abandoned Apple Trees: Comparison of Orchard Versus Alley

    Directory of Open Access Journals (Sweden)

    Václav Psota

    2016-01-01

    Full Text Available Occurrence of arthropods on abandoned apple trees was studied in 2010 and 2011. The research was carried out in South Moravia (Czech Republic. Two sites were selected within this area – apple trees (Malus domestica in an alley along a road and an abandoned apple orchard. At each location, arthropods were collected from 5 separate trees. Deltamethrin was applied into the treetops using a fogger. The killed arthropods were collected 15 minutes after the application. From among the collected data, 48 families were determined in accordance with a generalized linear model with a logarithmic-link function and Poisson distribution. As a result it was found that 33 families have significantly higher abundance in the abandoned orchard and 9 families in the alley. According to the Shannon-Wiener index, diversity of families was higher in the alley in both years (2010: H’ = 3.016, 2011: H’ = 3.177 compared to the abandoned orchard (2010: H’ = 2.413, 2011: H’ = 3.007.

  12. 60 changes in soil properties under alley cropping system of three ...

    African Journals Online (AJOL)

    OLUWOLE AKINNAGBE

    2009-01-01

    Jan 1, 2009 ... A study to evaluate the changes in soil properties, under existing alley cropping system with three leguminous crops (Leucaena ... This exploits the biological .... chemical properties were observed in the last two years of study (2004-2005) over the pre-planting soil result. The pH values in the C. cajan alley.

  13. Using Google SketchUp to simulate tree row azimuth effects on alley shading

    Science.gov (United States)

    Effect of row azimuth on alley crop illumination is difficult to determine empirically. Our objective was to determine if Google SketchUp (Trimble Inc., Sunnyvale, CA) could be used to simulate effect of azimuth orientation on illumination of loblolly pine (Pinus taeda L.) alleys. Simulations were...

  14. Frontiers in alley cropping: Transformative solutions for temperate agriculture.

    Science.gov (United States)

    Wolz, Kevin J; Lovell, Sarah T; Branham, Bruce E; Eddy, William C; Keeley, Keefe; Revord, Ronald S; Wander, Michelle M; Yang, Wendy H; DeLucia, Evan H

    2018-03-01

    Annual row crops dominate agriculture around the world and have considerable negative environmental impacts, including significant greenhouse gas emissions. Transformative land-use solutions are necessary to mitigate climate change and restore critical ecosystem services. Alley cropping (AC)-the integration of trees with crops-is an agroforestry practice that has been studied as a transformative, multifunctional land-use solution. In the temperate zone, AC has strong potential for climate change mitigation through direct emissions reductions and increases in land-use efficiency via overyielding compared to trees and crops grown separately. In addition, AC provides climate change adaptation potential and ecological benefits by buffering alley crops to weather extremes, diversifying income to hedge financial risk, increasing biodiversity, reducing soil erosion, and improving nutrient- and water-use efficiency. The scope of temperate AC research and application has been largely limited to simple systems that combine one timber tree species with an annual grain. We propose two frontiers in temperate AC that expand this scope and could transform its climate-related benefits: (i) diversification via woody polyculture and (ii) expanded use of tree crops for food and fodder. While AC is ready now for implementation on marginal lands, we discuss key considerations that could enhance the scalability of the two proposed frontiers and catalyze widespread adoption. © 2017 John Wiley & Sons Ltd.

  15. Chemical Characteristics of Six Woody Species for Alley Cropping

    Directory of Open Access Journals (Sweden)

    Mosango, M.

    1999-01-01

    Full Text Available Leaves of six woody species (Leguminosae for alley cropping have been chemically analysed in order to evaluate their potentiality in the restoration of soil fertility. These species are : Acacia mangium, Cajanus cajan, Flemingia grahamiana, F. macrophylla, Leucaena leucocephala and Sesbania sesban. Nitrogen, carbon, cellulose, hemicellulose, lignin, active fraction and ash contents were determined as well as C/N and L/N ratios. AH these species appear to be rich in N and C. Fiber contents (cellulose, hemicellulose and lignin are globally low but variable from one species to another. C/N and L/N ratios are globally low. Among these species, Leucaena leucocephala and Senna spectabilis show the lowest C/N and LIN ratios. Such low values of C/N and L/N are normally found in species with rapid decomposition of organic matter.

  16. Soil carbon stabilization and turnover at alley-cropping systems, Eastern Germany

    Science.gov (United States)

    Medinski, T.; Freese, D.

    2012-04-01

    Alley-cropping system is seen as a viable land-use practice for mitigation of greenhouse gas CO2, energy-wood production and soil carbon sequestration. The extent to which carbon is stored in soil varies between ecosystems, and depends on tree species, soil types and on the extent of physical protection of carbon within soil aggregates. This study investigates soil carbon sequestration at alley-cropping systems presented by alleys of fast growing tree species (black locust and poplar) and maize, in Brandenburg, Eastern Germany. Carbon accumulation and turnover are assessed by measuring carbon fractions differing in decomposition rates. For this purpose soil samples were fractionated into labile and recalcitrant soil-size fractions by wet-sieving: macro (>250 µm), micro (53-250 µm) and clay + silt (<53 µm), followed by determination of organic carbon and nitrogen by gas-chromatography. Soil samples were also analysed for the total C&N content, cold-water extractable OC, and microbial C. Litter decomposition was evaluated by litter bags experiment. Soil CO2 flux was measured by LiCor automated device LI-8100A. No differences for the total and stable (clay+silt, <53 µm) carbon fraction were observed between treatment. While cold water-extractable carbon was significantly higher at maize alley compared to black locust alley. This may indicate faster turnover of organic matter at maize alley due to tillage, which influenced greater incorporation of plant residues into the soil, greater soil respiration and microbial activity.

  17. Multifactorial biogeochemical monitoring of linden alley in Moscow

    Science.gov (United States)

    Ermakov, Vadim; Khushvakhtova, Sabsbakhor; Tyutikov, Sergey; Danilova, Valentina; Roca, Núria; Bech, Jaume

    2015-04-01

    The ecological and biogeochemical assessment of the linden alley within the Kosygin Street was conducted by means of an integrated comparative study of soils, their chemical composition and morphological parameters of leaf linden. For this purpose 5 points were tested within the linden alley and 5 other points outside the highway. In soils, water extract of soil, leaf linden the content of Cu, Pb, Mn, Fe, Cd, Zn, As, Ni, Co Mo, Cr and Se were determined by AAS and spectrofluorimetric method [1]. Macrocomponents (Ca, Mg, K, Na, P, sulphates, chlorides), pH and total mineralization of water soil extract were measured by generally accepted methods. Thio-containing compounds in the leaves were determined by HPLC-NAM spectrofluorometry [2]. On level content of trace elements the soils of "contaminated" points different from background more high concentrations of lead, manganese, iron, selenium, strontium and low level of zinc. Leaf of linden from contaminated sites characterized by an increase of lead, copper, iron, zinc, arsenic, chromium, and a sharp decrease in the level of manganese and strontium. Analysis of the aqueous extracts of the soil showed a slight decrease in the pH value in the "control" points and lower content of calcium, magnesium, potassium, sodium and total mineralization of the water soil extract. The phytochelatins test in the leaves of linden was weakly effective and the degree of asymmetry of leaf lamina too. The most differences between the variants were marked by the degree of pathology leaves (chlorosis and necrosis) and the content of pigments (chlorophyll and carotene). The data obtained reflect the impact of the application of de-icing salts and automobile emissions. References 1. Ermakov V.V., Danilova V.N., Khyshvakhtova S.D. Application of HPLC-NAM spectrofluorimtry to determination of sulfur-containing compounds in the environmental objects// Science of the biosphere: Innovation. Moscow State University by M.V. Lomonosov, 2014. P. 10

  18. Economic evaluation of alley cropping leucaena with maize - maize and maize - cowpea in southern Nigeria

    Energy Technology Data Exchange (ETDEWEB)

    Ngambeki, D.S.

    1985-01-01

    Alley cropping is an aspect of agroforestry being developed for small farmers in the tropics. It consists of establishing fast-growing leguminous shrubs or tree species in rows, then controlling the shading from the trees during cropping by pruning the branches which can be used as mulch or green manure to benefit the companion crops planted between the alleys. This paper attempts to assess the economic implications on labour utilization for the management of the leucaena hedgerows, on crop yields and the overall benefits from alley cropping with leucaena. The results show that although the management of leucaena trees increases labour requirements by about 50% the system can sustain and increase maize yields by over 60%, reduce the use of nitrogenous fertilizers and give an attractive net income and marginal rate of return per unit cost. It gave a reasonable benefit-cost ratio of 1.23 to 1.32 and looks promising, especially for maize production in tropical areas. 16 references.

  19. Framework for studying the hydrological impact of climate change in an alley cropping system

    Science.gov (United States)

    Hallema, Dennis W.; Rousseau, Alain N.; Gumiere, Silvio J.; Périard, Yann; Hiemstra, Paul H.; Bouttier, Léa; Fossey, Maxime; Paquette, Alain; Cogliastro, Alain; Olivier, Alain

    2014-09-01

    Alley cropping is an agroforestry practice whereby crops are grown between hedgerows of trees planted at wide spacings. The local climate and the physiological adaptation mechanisms of the trees are key factors in the growth and survival of the trees and intercrops, because they directly affect the soil moisture distribution. In order to evaluate the long-term hydrological impact of climate change in an alley cropping system in eastern Canada, we developed a framework that combines local soil moisture data with local projections of climate change and a model of soil water movement, root uptake and evapotranspiration. Forty-five frequency domain reflectometers (FDR) along a transect perpendicular to the tree rows generated a two-year dataset that we used for the parameterization and evaluation of the model. An impact study with simulations based on local projections of three global and one regional climate simulation suggest that the soil becomes drier overall in the period between 2041 and 2070, while the number of critically wet periods with a length of one day increases slightly with respect to the reference period between 1967 and 1996. Hydrological simulations based on a fourth climate scenario however point toward wetter conditions. In all cases the changes are minor. Although our simulations indicate that the experimental alley cropping system will possibly suffer drier conditions in response to higher temperatures and increased evaporative demand, these conditions are not necessarily critical for vegetation during the snow-free season.

  20. Assessment of competition for water between peanut (Arachis hypogaea) and Choerospondias axillaris in an alley cropping system in subtropical China

    International Nuclear Information System (INIS)

    Zhang, B.; Zhao, Y.; Wang, M.Z.

    2008-01-01

    Tree and crop components of an alley cropping system may compete for nutrients and water in the surface soil while the deeper-rooting tree may have better access to resources in the subsoil. The objectives of the present study in an alley cropping system were to monitor runoff and soil loss, spatial variation of soil water, and tree sap flow to determine competitiveness for water between the tree and peanut. Plant and root growth were also recorded to evaluate competition. The tree competed for water in the surface soil at some critical period as indicated by the spatial variation of monitored soil water content. The tree used deep soil water and reduced deep drainage as indicated by modelling of soil water fluxes and direction of water movement. Trees in the alley cropping system used less soil water than peanut, and more water than trees alone, as indicated by water balance modelling. The magnitude of the reduction of deep drainage increased with tree age. The alley cropping system increased system water use efficiency by using deep soil water as indicated by water balance modelling. The alley cropping system promoted Choerospondias axillaris growth by 50 to 100% and reduced peanut biomass and yield by 20 to 50%. Field management should aim to prevent water competition between trees and crops in the surface soil. (author)

  1. Establishment trial of an oak-pine/soybean-corn-wheat alley-cropping system in the upper coastal plain of North Carolina

    Science.gov (United States)

    H.D. Stevenson; D.J. Robison; F.W. Cubbage; J.P. Mueller; M.G. Burton; M.H. Gocke

    2013-01-01

    Alley cropping may prove useful in the Southeast United States, providing multiple products and income streams, as well as affording sustainable land use alternatives to conventional farming. An alley-cropping system may be a good alternative in agriculture because of the benefits provided by trees to crops and soils, as well as the income generated from wood products...

  2. Compliance with NAGCAT work practices recommendations for youth cleaning service alleys in stall barns.

    Science.gov (United States)

    Canan, B D; Asti, L; Heaney, C; Ashida, S; Renick, K; Xiang, H; Stallones, L; Jepsen, S D; Crawford, J M; Wilkins, J R

    2011-04-01

    Unintentional injury is the leading cause of death in the U.S. among persons 1 to 44 years of age. Over one million children and adolescents in the U.S. live, work, and/or play on farms, where injury risk is relatively high compared to other settings. In an attempt to reduce the number of childhood agricultural injuries occurring on farms, the North American Guidelines for Children's Agricultural Tasks (NAGCAT) was developed to assist parents or other caregivers in assigning developmentally appropriate chores to youth exposed to agricultural hazards. The results presented here are from a longitudinal study in which we obtained (self-reported) daily chore, injury, and safety behavior data from children and adolescents. We focused on one NAGCAT chore, cleaning a service alley in a stall barn, in order to estimate the extent of compliance with specific work practice recommendations contained in the NAGCAT. Our results indicated that among the four NAGCAT-recommended safety practices for cleaning service alleys in stall barns (wearing nonskid shoes, leather gloves, a respirator, and eye protection), wearing non-skid shoes was the only safety practice reported with any degree of regularity. Overall, boys were more likely to wear non-skid shoes compared to girls. In addition, older youth were generally more likely to report higher work practice compliance compared to younger youth.

  3. Simply obtained global radiation, soil temperature and soil moisture in an alley cropping system in semi-arid Kenya

    NARCIS (Netherlands)

    Mungai, D.N.; Stigter, C.J.; Coulson, C.L.; Ng'ang'a, J.K.

    2000-01-01

    Global radiation, soil temperature and soil moisture data were obtained from a 4-6 year old Cassia siamea/maize (CM) alley cropping (or hedgerow intercropping) system, at a semi-arid site at Machakos, Kenya, in the late eighties. With the growing need to explore and manage variations in

  4. Vegetation barrier and tillage effects on runoff and sediment in an alley crop system on a Luvisol in Burkina Faso

    NARCIS (Netherlands)

    Spaan, W.P.; Sikking, A.F.S.; Hoogmoed, W.B.

    2005-01-01

    The effects of vegetation barriers and tillage on runoff and soil loss were evaluated in an alley crop system at a research station in central Burkina Faso. On a 2% slope of a sandy loam various local species (grasses, woody species and a succulent) were planted as conservation barriers in order to

  5. "Storm Alley" on Saturn and "Roaring Forties" on Earth: two bright phenomena of the same origin

    Science.gov (United States)

    Kochemasov, G. G.

    2009-04-01

    "Storm Alley" on Saturn and "Roaring Forties' on Earth: two bright phenomena of the same origin. G. Kochemasov IGEM of the Russian Academy of Sciences, Moscow, Russia, kochem.36@mail.ru Persisting swirling storms around 35 parallel of the southern latitude in the Saturnian atmosphere and famous "Roaring Forties" of the terrestrial hydro- and atmosphere are two bright phenomena that should be explained by the same physical law. The saturnian "Storm Alley" (as it is called by the Cassini scientists) is a stable feature observed also by "Voyager". The Earth's "Roaring Forties" are well known to navigators from very remote times. The wave planetology [1-3 & others] explains this similarity by a fact that both atmospheres belong to rotating globular planets. This means that the tropic and extra-tropic belts of these bodies have differing angular momenta. Belonging to one body these belts, naturally, tend to equilibrate their angular momenta mainly by redistribution of masses and densities [4]. But a perfect equilibration is impossible as long as a rotating body (Saturn or Earth or any other) keeps its globular shape due to mighty gravity. So, a contradiction of tropics and extra-tropics will be forever and the zone mainly between 30 to 50 degrees in both hemispheres always will be a zone of friction, turbulence and strong winds. Some echoes of these events will be felt farther poleward up to 70 degrees. On Earth the Roaring Forties (40˚-50˚) have a continuation in Furious Fifties (50˚-60˚) and Shrieking (Screaming) Sixties (below 60˚, close to Antarctica). Below are some examples of excited atmosphere of Saturn imaged by Cassini. PIA09734 - storms within 46˚ south; PIA09778 - monitoring the Maelstrom, 44˚ north; PIA09787 - northern storms, 59˚ north; PIA09796 - cloud details, 44˚ north; PIA10413 - storms of the high north, 70˚ north; PIA10411 - swirling storms, "Storm Alley", 35˚ south; PIA10457 - keep it rolling, "Storm Alley", 35˚ south; PIA10439 - dance

  6. Simply Obtained Global Radiation, Soil Temperature and SoilMoisture in an Alley Cropping System in Semi-Arid Kenya

    Science.gov (United States)

    Mungai, D. N.; Stigter, C. J.; Coulson, C. L.; Ng'ang'a, J. K.

    Global radiation, soil temperature and soil moisture data were obtained from a 4-6 year old Cassia siamea/maize (CM) alley cropping (or hedgerow intercropping) system, at a semi-arid site at Machakos, Kenya, in the late eighties. With the growing need to explore and manage variations in agro-ecosystems these results deserve new attention. They quantify, in a simple but detailed manner, the influence of hedgerows on the microclimate of their intercrop and for comparison provide a sole maize (SM) control. Due to inhomogeneity of Cassia and maize, as well as limited budgets, the sampling methodology and the choice of appropriate equipment, including the sensors, demanded special attention. The diurnal patterns of soil temperatures at 7.5cm depth represented well the shading patterns of the hedgerows. This can be developed into an operational auxiliary methodology of integrated shade quantification. With proper precautions, the developed sampling methodologies showed appropriately the time integrated values of the three microclimatic parameters with enough detail to understand yield differences between treatments and between rows. This approach may therefore be recommended for on-farm quantification of even greater spatial variability of parameters. The limitations of the selected methods are highlighted. Experiences with some alternative methods are also discussed.

  7. Effects of Moringa oleifera LAM, Leguminous Plants and NPK Fertilizer Comparatively on Orange Fleshed Sweet Potato in Alley Cropping System

    Directory of Open Access Journals (Sweden)

    IN Abdullahi

    2014-09-01

    Full Text Available The research work conducted at the Teaching and Research Farm of University of Abuja was aimed at assessing the effect of Moringa oleifera, selected leguminous plants and inorganic fertilizer on the performance of orange fleshed sweet potato in Alley Cropping System. Randomized Complete Block Design (RCBD using five treatments with three replications was applied. Data collected include: percentage survival of sweet potato, length per vine (cm, number of leaves per vine, leaf area of sweet potato, weed dry matter (g/m2, yield of sweet potato roots. Highest number of leaves (28 per plant was recorded in the control plot while the plots with NPK fertilizer had the highest length per vine (94.55cm though not significantly (p>0.05 different from others. Higher percent survival (88% of sweet potato was recorded from control plots. Stands grown in Arachis hypogeae plots produced the highest leaf area (0.202m2 while plots in which NPK fertilizer was applied experienced highest weed dry matter (4.083g/m2 although highest root yield (1.2t/ha was recorded from the plots with NPK fertilizer. DOI: http://dx.doi.org/10.3126/ije.v3i3.11061 International Journal of Environment Vol.3(3 2014: 24-35

  8. The influence of tagasaste (chamaecytisus proliferus link) trees on the water balance of an alley cropping system on deep sand in south-western Australia)

    International Nuclear Information System (INIS)

    Lefroy, E.C.; Pate, J.S.; Stirzaker, R.J.

    2001-01-01

    Components of the water balance of an alley cropping system were measured to assess the extent to which tree rows 30 m apart with access to a fresh, perched watertable at 5 m depth were able to capture deep drainage from an inter-cropped cereal-legume rotation. Neutron probe data showed that the 4-year-old trees, cut back to 0.6-m high at the beginning of the experiment, depleted soil water to 2, 4, and 8 m laterally from the tree rows in their first, second, and third years of coppice regrowth, respectively. Combining data from soil water depletion in summer and comparisons of deuterium/hydrogen ratios of groundwater, xylem sap of trees, and herbaceous plants, it was shown that tagasaste trees drew on soil water for 80% of their transpiration in the first winter and 40% in the second, while switching to near total dependence on groundwater each summer and early autumn. Tree water use on a whole plot basis was 170 mm in 1997 (68% from groundwater) v. 167 mm in 1998 (73% from groundwater). Recharge to the perched watertable was estimated to be 193 mm under sole crop in 1998 (52% of rainfall), reducing to 32 mm when uptake of groundwater by trees was included. The degree of complementarity between tagasaste trees and crops in alley cropping used for water management is quantified for 1998 by calculating the ratio of the distance over which trees reduced drainage to zero to the distance over which they reduced crop yield to zero. It is concluded that segregated monocultures of trees and crops would be a more appropriate strategy than a closely integrated system such as alley cropping in this case. Copyright (2001) CSIRO Australia

  9. Measuring Evapotranspiration of five Alley Cropping systems in Germany using the Eddy-Covariance- and Bowen-Ratio Energy-Balance methods

    Science.gov (United States)

    Markwitz, Christian; Knohl, Alexander; Siebicke, Lukas

    2017-04-01

    The inclusion of trees into the agricultural landscape of Europe is gaining popularity as a source for energy production. Fast growing tree species such as poplar or willow are included as short rotation coppice or alley cropping systems, which consist of tree alleys interleaved by annual rotating crops or perennial grasslands. Estimating turbulent fluxes of those systems using the eddy-covariance- (ECEB) and bowen-ratio energy-balance (BREB) method is challenging due to the methods limitation to horizontally homogeneous terrain and steady state conditions. As the conditions are not fulfilled for those systems the energy-balance is commonly not fully closed, with the non-closure being site specific. An underestimation of measured heat fluxes leads to an overestimation of the latent heat fluxes inferred from the ECEB method. The aim of our study is to 1) quantify the site specific non-closure of the energy-balance and 2) characterize the performance of both methods, compared to direct eddy-covariance measurements using a high frequency infra-red gas analyzer (LI-7200, Licor Inc.). To assess continuous evapotranspiration (ET) rates on a 30-minute time scale we installed a combined ECEB and BREB system at five alley cropping and five agricultural reference sites across Germany. For time periods of four weeks we performed direct eddy covariance flux measurements for H2O and CO2 over one crop- and one grassland alley cropping- and their respective reference systems during the growing season of 2016. We found a non-closure between 21 and 26 % for all sites, considering all day- and night-time data. The residual energy was highest during the morning and lowest in the afternoon. Related to that the energy-balance ratio (EBR), i.e. the ratio between the turbulent heat fluxes and available energy, was below one in the morning hours and increased slightly during the day up to 1.8, until the EBR decreased sharply after sunset. The EBR correlated to the daily cycle of solar

  10. Alley cropping of legumes with grasses as forages : Effect of different grass species and row spacing of gliricidia on the growth and biomass production of forages

    Directory of Open Access Journals (Sweden)

    Siti Yuhaeni

    1998-12-01

    Full Text Available A study to evaluate the effect of different grass species and row spacing of gliricidia (Gliricidia sepium on the growth and biomass production of forages in an alley cropping system was conducted in two different agroclimatical zones i.e. Bogor, located at 500 m a .s .l . with an average annual rainfall of 3,112 nun/year and Sukabumi located at 900 m a .s .l . with an average annual rainfall of 1,402 mm/year . Both locations have low N, P, and K content and the soil is classified as acidic. The experimental design used was a split plot design with 3 replicates . The main plots were different grass species i.e. king grass (Pennisetum purpureum x P. typhoides and elephant grass (P. purpureum. The sub plots were the row spacing of gliricidia at 2, 3, 4, 6 m (1 hedgerows and 4 m (2 hedgerows. The results indicated that the growth and biomass production of grasses were significantly affected (P<0 .05 by the treatments in Bogor. The highest biomass productions was obtained from the 2 m row spacing which gave the highest dry matter production of grasses (1 .65 kg/hill and gliricidia (0 .086 kg/tree . In Sukabumi the growth and biomass production of grasses and gliricidia were also significantly affected by the treatments . The highest dry matter production was obtained with 2 m row spacing (dry matter of grasses and gliricidia were 1 .12 kg/hill and 0 .026 kg/tree, respectively . The result further indicated that biomass production of forages increased with the increase in gliricidia population. The alley cropping system wich is suitable for Bogor was the 2 m row spacing of gliricidia intercropped with either king or elephant grass and for Sukabumi 2 and 4 m (2 rows of gliricidia row spacing intercropped with king or elephant grass .

  11. Cultivo de milho no sistema de aléias com leguminosas perenes Maize crop in alley cropping system with perennials legumes

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    Luciano Rodrigues Queiroz

    2007-10-01

    Full Text Available Objetivou-se avaliar a influência de algumas leguminosas perenes no teor foliar de N, P e K e na produtividade da cultura do milho (UENF 506-8, cultivado no sistema de aléias, sem adubação fosfatada. Foram realizados experimentos de campo por dois ciclos de cultivo, no Campo Experimental do CCTA/UENF, em Campos dos Goytacazes - RJ. Os tratamentos consistiram no sistema de aléias com Albizia lebbeck (L. Benth., Peltophorum dubium (Spreng. Taub., Leucaena leucocephala (Lam. de Wit., Cajanus cajan (L. Millsp., Sesbania virgata (Cav. Pers., Mimosa caesalpiniaefolia Benth., Gliricidia sepium (Jacq. Pers. e duas testemunhas com milho solteiro (com e sem NPK. Após oito meses de plantio das leguminosas, essas foram podadas, o material foi incorporado ao solo e em seguida semeado o milho nas entrelinhas, com espaçamento de 80 cm entre fileiras. Após 60 dias da semeadura do milho efetuou-se nova poda. No segundo ciclo de cultivo, as práticas culturais foram similares às do primeiro. Foi utilizado o delineamento em blocos casualizados com quatro repetições. Nas aléias de guandu, observou-se milho com maior teor foliar de N, em relação às demais leguminosas, no primeiro ciclo de cultivo. No segundo ciclo, os consórcios milho+guandu, milho+gliricídia e milho solteiro adubado superaram os demais na produtividade de grãos.The objective of this study was to evaluate the effects of perennials legumes, in N, P and K foliar concentration and maize productivity in alley cropping system, without phosphorus fertilization. Field experiments were carried out for two cycles, with legumes intercropping maize (UENF 506-8 in Field Research CCTA/UENF in Campos dos Goytacazes - RJ - Brazil. The treatments consisted of alley cropping system with the species: Albizia lebbeck (L. Benth., Peltophorum dubium (Spreng. Taub., Leucaena leucocephala (Lam. de Wit., Cajanus cajan (L. Millsp., Sesbania virgata (Cav. Pers., Mimosa caesalpiniaefolia Benth., Gliricidia

  12. Soundtracks of Empire: “The White Man’s Burden,” the War in the Philippines, the“Ideals of America,” and Tin Pan Alley

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    Robert W. Rydell

    2012-03-01

    Full Text Available America’s War with Spain inspired Tin Pan Alley music publishers to generate popular songs to accompany America’s military victories and subsequent occupation of Cuba, Puerto Rico, Hawaii, and the Philippines. By expanding the genre of the so-called “coon song” to include the people of these islands, composers and publishers contributed to the domestication of empire in fin-de-siècle America.

  13. Barriers to the Adoption of Alley Cropping as a Climate-Smart Agriculture Practice: Lessons from Maize Cultivation among the Maya in Southern Belize

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    Rico Kongsager

    2017-07-01

    Full Text Available Climate-smart agriculture (CSA is proposed as a necessity, as the agricultural sector will need to adapt to resist future climatic change, to which high emissions from the sector contribute significantly. This study, which is an exploratory case study based on qualitative interviews and field observations, investigates the barriers to making a CSA-adjustment in maize production among Maya communities in southern Belize. The adjustment is alley cropping, which is a low-input adjustment that has the potential to result in both adaptation and mitigation benefits, and furthermore, to enhance food security. The findings show that a CSA-adjustment in small-scale maize production in Maya villages in southern Belize is possible in principle, though several barriers can make the overall climate-smart objective difficult to implement in practice. The barriers are of a proximate and indirect nature, exist at different spatial scales, and involve various levels of governance. The barriers are shown to be land tenure, market access, and changes in the traditional culture, however, these barriers are not homogenous across the villages in the region. To break down the barriers an overall district-level strategy is possible, but the toolbox should contain a wide variety of approaches. These could happen, for instance, through alterations to land tenure and the land taxation system nationally, enhancement of the agricultural extension system to ease access to knowledge and input at the district level, and support to a less complex governance structure at the village level.

  14. Locomotion and claw disorders in Norwegian dairy cows housed in freestalls with slatted concrete, solid concrete, or solid rubber flooring in the alleys.

    Science.gov (United States)

    Fjeldaas, T; Sogstad, A M; Osterås, O

    2011-03-01

    This study was part of a cross-sectional project on freestall housing, and the aim was to compare locomotion and claw disorders in freestall dairy cattle herds with slatted concrete, solid concrete, or solid rubber flooring in the alleys. The final population for studying claw disorders consisted of 66 dairy herds with 2,709 dry or lactating cows, whereas the population for studying locomotion consisted of 54 herds with 2,216 cows. All herds used Norwegian Red as the main breed. The herds were visited by 15 trained claw trimmers one time during the period from the beginning of February to summer let-out onto pasture in 2008. The trimmers assessed locomotion scores (LocS) of all cows before trimming. At trimming, claw disorders were diagnosed and recorded in the Norwegian Claw Health Card. Estimates describing locomotion and claw disorders in the hind feet were identified by use of multivariable models fit with LocS and each claw disorder as dependent variables, respectively. Herd nested within claw trimmer was included in the model as random effects. The odds ratio (OR) of having LocS >2 and LocS >3 was 1.9 and 2.1, respectively, on slatted concrete compared with solid concrete. Fewer cases of dermatitis were found on slatted than solid concrete (OR=0.70) and a tendency was observed for fewer heel horn erosions on slatted concrete than solid rubber (OR=0.47). Hemorrhages of the white line and sole were more prevalent in herds housed on slatted and solid concrete than in those housed on solid rubber (OR=2.6 and OR=2.1, respectively). White line fissures were also more prevalent in herds housed on slatted and solid concrete than in those housed on solid rubber (OR=2.1 and OR=2.0, respectively). Double soles were more prevalent on solid concrete than solid rubber (OR=4.4). However, sole ulcers were less prevalent in herds with slatted and solid concrete than solid rubber (OR=0.39 and OR=0.53, respectively). Fewer corkscrewed claws were found on slatted concrete than

  15. Models of bright storm clouds and related dark ovals in Saturn's Storm Alley as constrained by 2008 Cassini/VIMS spectra

    Science.gov (United States)

    Sromovsky, L. A.; Baines, K. H.; Fry, P. M.

    2018-03-01

    A 5° latitude band on Saturn centered near planetocentric latitude 36°S is known as "Storm Alley" because it has been for several extended periods a site of frequent lightning activity and associated thunderstorms, first identified by Porco et al. (2005). The thunderstorms appeared as bright clouds at short and long continuum wavelengths, and over a period of a week or so transformed into dark ovals (Dyudina et al., 2007). The ovals were found to be dark over a wide spectral range, which led Baines et al. (2009) to suggest the possibility that a broadband absorber such as soot produced by lightning could play a significant role in darkening the clouds relative to their surroundings. Here we show that an alternative explanation, which is that the clouds are less reflective because of reduced optical depth, provides an excellent fit to near infrared spectra of similar features obtained by the Cassini Visual and Infrared Mapping Spectrometer (VIMS) in 2008, and leads to a plausible scenario for cloud evolution. We find that the background clouds and the oval clouds are both dominated by the optical properties of a ubiquitous upper cloud layer, which has the same particle size in both regions, but about half the optical depth and physical thickness in the dark oval regions. The dark oval regions are also marked by enhanced emissions in the 5-μm window region, a result of lower optical depth of the deep cloud layer near 3.1-3.8 bar, presumably composed of ammonium hydrosulfide (NH4SH). The bright storm clouds completely block this deep thermal emission with a thick layer of ammonia (NH3) clouds extending from the middle of the main visible cloud layer probably as deep as the 1.7-bar NH3 condensation level. Other condensates might also be present at higher pressures, but are obscured by the NH3 cloud. The strong 3-μm spectral absorption that was displayed by Saturn's Great Storm of 2010-2011 (Sromovsky et al., 2013) is weaker in these storms because the contrast is

  16. Fungos micorrízicos arbusculares em sistema de aléias no Estado do Maranhão, Brasil Arbuscular mycorrhizal fungi in an alley cropping system in the state of Maranhão, Brazil

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    Camila Pinheiro Nobre

    2010-12-01

    Full Text Available Sistemas em aléias podem consistir numa solução para o uso da terra em regiões do Trópico Úmido. A relação dessa forma de manejo com a dinâmica dos fungos micorrízicos arbusculares (FMA ainda é pouco compreendida. O objetivo desse estudo foi verificar a influência de leguminosas arbóreas em um sistema em aléias na capacidade infectiva e diversidade de FMA nativos em São Luís, Maranhão. Amostras de solo coletadas do sistema em aléias no campus experimental da Universidade Estadual do Maranhão (UEMA - São Luís, em duas épocas do ano (Julho/2006 e Abril/2007, a duas distâncias (0 m e 0,5 m do tronco de três leguminosas (Leucaena leucocephala, Clitoria fairchildiana e Acacia mangium e em área testemunha (sem leguminosas na profundidade de 0 - 20 cm. O solo coletado foi utilizado para avaliar a capacidade infectiva dos FMA nativos, densidade e identificação de glomerosporos. O sistema em aléias aumenta o potencial de infectividade dos FMA nativos dependendo da espécie de leguminosa arbórea associada, estação de coleta e proximidades das árvores. Dezesseis espécies de FMA foram encontradas na área distribuídas em cinco gêneros, sendo Scutellospora o mais representativo.Alley cropping systems may be a solution for land use in tropical regions. How land use is connected to mycorrhizal arbuscular fungi (AMF is poorly understood, especially in the tropics. The aim of this study was to evaluate the influence of leguminous trees in an alley cropping system in regard to the infectivity and diversity of native AMF species in São Luís, Maranhão, Brazil. Soil samples were collected in an experimental area of the Universidade Estadual do Maranhão (UEMA - São Luís, in two seasons (July/2006 and April/2007, two distances (0 m and 0.5 m from the trunk of three leguminous trees (Leucaena leucocephala, Clitoria fairchildiana e Acacia mangium, and in a control area 0-20 cm deep. Soil samples were used to evaluate the

  17. Comportamento de dois genótipos de milho cultivados em sistema de aléias preestabelecido com diferentes leguminosas arbóreas Behaviour of two maize genotypes grown in alley cropping system pre-established with diferents leguminous trees

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    Andréia Araújo Lima Leite

    2008-12-01

    Full Text Available O cultivo em aléias tem sido recomendado como alternativa para a substituição da agricultura de corte e queima, no trópico úmido, devido à grande capacidade de produção de matéria orgânica e de reciclagem de nutrientes, mas algumas dúvidas quanto à sustentabilidade e à competição interespecífica são persistentes. O objetivo no trabalho foi avaliar a viabilidade da cultura do milho em um sistema de cultivo em aléias de leguminosas arbóreas. O delineamento experimental utilizado foi em blocos casualisados, com quatro repetições dos tratamentos: aléias de sombreiro (Clitoria fairchildiana, ingá (Inga edulis, guandu (Cajanus cajan e leucena (Leucaena leucocephala e uma testemunha sem aléias. Foram avaliadas a remobilização de carbono e nitrogênio, massa de grãos, massa de mil grãos e competição interespecífica entre as cultivares de milho e as leguminosas. A produção de grãos foi maior nas parcelas com C. fairchildiana e L. leucocephala. A produtividade do híbrido de milho foi superior à da variedade em todos os tratamentos. A produtividade e a massa de mil grãos de milho não são negativamente afetadas pela distância da linha da leguminosa arbórea. Esse estudo conclui que o sistema de aléias com leguminosas arbóreas é uma alternativa importante ao manejo sustentável dos agroecossistemas no tropico úmido. Além disso, nessa região a produtividade em grãos na cultura do milho é favorecida no sistema de aléias preeestabelecidas com as leguminosas arbóreas sombreiro, ingá e leucena e pela utilização de genótipos eficientes no aproveitamento do nitrogênio, cujo sincronismo entre a liberação e a absorção do N aplicado por meio das leguminosas deve ser aprimorado.Alley cropping has been recommended as alternative land use to slash-and-burn agriculture in humid tropics. However, interespecific competition between cash crop and hedgerow can reduce this potential. This study aimed to evaluate the

  18. [Blind alleys and misconceptions in public health].

    Science.gov (United States)

    Müller, H E

    1995-07-01

    The concept of hygiene was created in the 19th century although Hippocrates had already conceived an influence of atmosphere, soil and water on human health. The concept of a public health organisation, however, is a fairly recent one. Environmental and social hygiene were the two poles of the new discipline that focussed on public health. However, the ideologies of capitalism, communism and socialism as well as of social darwinism and "survival of the elite" discredited social hygiene. The decline of totalitarianism was associated with a "loss of face" of state-controlled medicine, including social hygiene. Both the post-World War II German constitution and the previous German statutory health insurance ordinance had blocked it, and hence, no Federal bill on public health was carried. The consequences of this disregard of public health are poor protection by vaccination, a gap in compulsory notification and in epidemics control and high rates of nosocomial infections. Absolutely no development of the science of epidemiology was possible whereas that of medical microbiology is choked by the system now in existence. There is a great misconception within individual hygiene by identifying it merely with cleanliness. Hygiene became a synonym for cleanliness, although that had evolved during a long cultural sociological process centuries before hygiene was established. The modern evolution of the science of hygiene shows the danger that emphasis on healthy lifestyles or on environmental protection may result in regulations and finally in a tyranny that may threaten the liberty of human rights. The so-called "principle of concern" is an example of such irrationality because there is no sensible proportion between risk and expense.

  19. Teatro Alley Houston – (EE.UU.

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    Ulrich Franzen y asociados, Arquitectos

    1974-07-01

    Full Text Available Both in view of its exterior shape and appearance as well as its interior decoration this building has been planned meticulously, considering the area, the population and the climate of the city as well as the usual medium of transport that the visitor will be using. The box-offices are accessible by car for which there is a nearby underground parking lot, connected with the theatre through a tunnel. The staircases are short and of different shapes. The theatre has spacious and shading terraces next to the foyers from where there is a view over the civic centre of the town. The interior decoration is inspired by the Spanish tradition, the South West Indies and Central America the influence of which is noted extensively in the area. The construction in general has been made with curved walls of fairfaced concrete on the outside and on the inside the colours are orange, brown, golden and blue.Este edificio se proyectó, tanto en su forma y aspecto exterior, como en su decoración interior, pensando meticulosamente en la zona, población de la ciudad y su clima, así como el medio habitual de transporte que utilizará el visitante. Las taquillas tienen acceso desde el automóvil, el cual se puede dejar en el estacionamiento subterráneo próximo, enlazado con el teatro mediante un túnel. Las escalinatas son variadas y constan de tramos cortos de forma diferente. Dispone de amplias y sombreadas terrazas, junto a las salas de descanso, desde las que se observa el centro cívico de la población. La decoración interior se inspiró en la tradición española, de las Indias Suroccidentales y de América Central, cuya influencia se nota ostensiblemente en la región. La construcción general se realizó a base de muros curvos de hormigón visto al exterior y colores naranja, marrón, dorado y azul en el interior.

  20. Dinâmica de decomposição e liberação de nutrientes de genótipos de guandu sob cultivo em aléias Decomposition dynamics and nutrient release by pigeon pea genotypes under alley cropping

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    Gustavo Porto Salmi

    2006-04-01

    Full Text Available O objetivo deste trabalho foi avaliar a produção de fitomassa aérea, seus teores de N, P, K, e a dinâmica de liberação desses nutrientes, em seis genótipos de guandu (Cajanus cajan, em sistema de cultivo em aléias. A produção média de biomassa foi de 5,9 Mg ha-1; o acúmulo de N variou de 188,3 a 261,3 kg ha-1, o de P de 7,2 a 9,4 kg ha-1 e o de K de 29,3 a 45,5 kg ha-1; não houve diferença estatística entre os genótipos avaliados. As curvas de liberação mostraram que, aos 56 dias aproximadamente 60% do N e 65% do P e do K, contidos na biomassa remanescente, haviam sido liberados ao solo. Não houve efeito dos genótipos sobre a taxa de liberação de nutrientes. Os resultados indicam que os seis genótipos estudados foram igualmente eficientes em produzir biomassa e em liberar nutrientes de modo satisfatório, no primeiro ano de estudos.The objective of this research was to evaluate the aerial biomass, N, P and K contents, and the dynamics of decomposition and mineralization, in six genotypes of pigeon pea, grown as hedgerows in an alley cropping system. Dry biomass production averaged 5.9 Mg ha-1; N content ranged from 188.3 to 261.3 kg ha-1; P content, from 7.2 to 9.4 kg ha-1 and K content, from 29.3 to 45.5 kg ha-1 . No differences between genotypes were found. Decay curves indicated a rate of 75% of the biomass still remaining 30 days after deposition. Also, approximately 60% of N, and 65% of P and K, of the remaining biomass, were released to soil. No effects of pigeon pea genotypes were found in decomposition or mineralization rates.

  1. Porn Alley: Now at Your Local Public Library.

    Science.gov (United States)

    Schuyler, Michael

    1999-01-01

    Suggests that a definitive court ruling is needed to better define rights and responsibilities related to the First Amendment and libraries' Internet use policies so that libraries can provide a comfortable environment for users while maintaining the law. Discusses filters; court cases; claims of the anti-porn cult; research studies on how much of…

  2. From Back Wards to Back Alleys: Deinstitutionalization and the Homeless.

    Science.gov (United States)

    Hope, Marjorie; Young, James

    1984-01-01

    The current non-system for dealing with the mentally disabled is expensive and inefficient and is the primary cause of a substantial proportion of all homelessness. A comprehensive national policy and the delegation of greater administrative responsibilities to private agencies would help to address the problem of the homeless mentally ill. (GC)

  3. Unmanned Aerial Vehicle Systems for Disaster Relief: Tornado Alley

    Science.gov (United States)

    DeBusk, Wesley M.

    2009-01-01

    Unmanned aerial vehicle systems are currently in limited use for public service missions worldwide. Development of civil unmanned technology in the United States currently lags behind military unmanned technology development in part because of unresolved regulatory and technological issues. Civil unmanned aerial vehicle systems have potential to augment disaster relief and emergency response efforts. Optimal design of aerial systems for such applications will lead to unmanned vehicles which provide maximum potentiality for relief and emergency response while accounting for public safety concerns and regulatory requirements. A case study is presented that demonstrates application of a civil unmanned system to a disaster relief mission with the intent on saving lives. The concept utilizes unmanned aircraft to obtain advanced warning and damage assessments for tornados and severe thunderstorms. Overview of a tornado watch mission architecture as well as commentary on risk, cost, need for, and design tradeoffs for unmanned aerial systems are provided.

  4. The square and the alley: punctual dichotomies and contextual harmonies in downtown Rio de Janeiro

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    Denise de Alcântara

    2008-06-01

    Full Text Available This article presents the analysis of two important public areas in the center of Rio de Janeiro; praça XV (formerly the largo do Paço and the travessa do Comércio. From examination of the changes in morphology and urban landscape that have occurred over time it is possible to relate the principal dichotomies and functional and spatial aspects between the two areas – considering the researcher’s cognitive view. The main objective is to define the characteristics of these urban areas, in which the significance, identity and user attractiveness determine its importance and sense of place. The analysis method being developed will be used in the study of other historic areas in the Rio de Janeiro Cultural Corridor Project during the current doctoral research.

  5. Shanghai Alleys, Theatrical Practice, and Cinematic Spectatorship: From Street Angel (1937 to Fifth Generation Film

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    Alexander Des Forges

    2010-01-01

    Full Text Available This article argues that a certain type of Shanghai film of the Republican period, exemplified by 1937’s Street Angel (馬路天使, Malu tianshi, makes use of a specific mode of spatial organization, modelled on the theatre, to represent the urban environment. In the case of Street Angel, and later on in 1964’s Stage Sisters (舞台姐妹, Wutai jiemei, the interaction between performers and audiences characteristic of the Shanghai theatre experience serves as a crucial ground on which to base calls to political action. For a variety of related reasons, both the city of Shanghai and this mode of spatial organization so closely associated with it vanish from the big screen in the 1980s and 1990s, and begin to make a return only at the turn of the new century.

  6. Burqas in Back Alleys: Street Art, hijab, and the Reterritorialization of Public Space

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    John A. Sweeney

    2011-12-01

    Full Text Available Examining the symbolic and representational nature of the Islamic “veil” in its various forms, this project situates the political contestations of public space at stake in the French ban alongside street artist practices that mediate a counter-spectacle to the objectification of women within contemporary society.

  7. It's how you get there: Walking down a virtual alley activates premotor and parietal areas

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    Johanna eWagner

    2014-02-01

    Full Text Available Voluntary drive is crucial for motor learning, therefore we are interested in the role that motor planning plays in gait movements. In this study we examined the impact of an interactive Virtual Environment (VE feedback task on the EEG patterns during robot assisted walking. We compared walking in the VE modality to two control conditions: walking with a visual attention paradigm, in which visual stimuli were unrelated to the motor task; and walking with mirror feedback, in which participants observed their own movements. Eleven healthy participants were considered. Application of independent component analysis to the EEG revealed three independent component clusters in premotor and parietal areas showing increased activity during walking with the adaptive VE training paradigm compared to the control conditions. During the interactive VE walking task spectral power in frequency ranges 8-12Hz, 15-20Hz and 23-40Hz was significantly (p ≤ 0.05 decreased. This power decrease is interpreted as a correlate of an active cortical area. Furthermore activity in the premotor cortex revealed gait cycle related modulations significantly different (p ≤ 0.05 from baseline in the frequency range 23-40Hz during walking. These modulations were significantly (p ≤ 0.05 reduced depending on gait cycle phases in the interactive VE walking task compared to the control conditions.We demonstrate that premotor and parietal areas show increased activity during walking with the adaptive VE training paradigm, when compared to walking with mirror- and movement unrelated feedback. Previous research has related a premotor-parietal network to motor planning and motor intention. We argue that movement related interactive feedback enhances motor planning and motor intention. We hypothesize that this might improve gait recovery during rehabilitation.

  8. J.M.Coetzee: On the Samuel Beckett’s alley

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    Diego Sheinbaum

    2015-02-01

    Full Text Available The author shows the influence of Samuel Beckett’s work in the oeuvre of the South African writer. He analyzes the first two novels of J. M. Coetzee, Dusklands (1974 and In the Hearth of the Country (1977 in order to explain how their protagonists share the solipsism of Beckett’s characters; however, their fate changes under the logic of colonialism. From this zero degree of writing, the characters of the South African novelist begin a journey that, in philosophical terms, takes them from the Cartesian ego towards the horizon of Hegelian recognition.

  9. Mesenchymal Stem Cells in Sepsis and Associated Organ Dysfunction: A Promising Future or Blind Alley?

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    Jan Horák

    2017-01-01

    Full Text Available Sepsis, newly defined as a life-threatening organ dysfunction caused by a dysregulated host response to infection, is the most common cause of death in ICUs and one of the principal causes of death worldwide. Although substantial progress has been made in the understanding of fundamental mechanisms of sepsis, translation of these advances into clinically effective therapies has been disappointing. Given the extreme complexity of sepsis pathogenesis, the paradigm “one disease, one drug” is obviously flawed and combinations of multiple targets that involve early immunomodulation and cellular protection are needed. In this context, the immune-reprogramming properties of cell-based therapy using mesenchymal stem cells (MSC represent an emerging therapeutic strategy in sepsis and associated organ dysfunction. This article provides an update of the current knowledge regarding MSC in preclinical models of sepsis and sepsis-induced acute kidney injury. Recommendations for further translational research in this field are discussed.

  10. Down cancer alley: the lived experience of health and environmental suffering in Louisiana's chemical corridor.

    Science.gov (United States)

    Singer, Merrill

    2011-06-01

    With the massive Gulf oil spill of 2010, there has been intensified concern about the impacts of industrial contamination on physical environments, human health, and social well-being. Based on ethnographic research in a primarily African American town in an area of Southern Louisiana colloquially known as the Chemical Corridor because of the large number of local chemical manufacturing plants, this article engages arguments made by Auyero and Swistun concerning the uncertainties and confusions that emerge when official or empowered pronouncements about the health impacts of living near waste-generating factories conflict with the everyday experience of perceived health-related contamination in an impoverished community. The article seeks to address gaps in our understanding of how communities conceive of environmental health risk, what their sources of information and level of knowledge about this issue are, and how they handle potential conflict between access to needed employment and the local presence of industrial polluters.

  11. Effect of Loblolly Pine (Pinus taeda L.) Root Pruning on Alley Cropped Herbage Production and Tree Growth

    Science.gov (United States)

    The competitive irradiance constraint of trees on the understory can be reduced by imposing standard silvicultural practices like pruning and thinning. Use of tillage to disrupt tree roots is an intensive practice which may improve herbage productivity at the crop-tree interface by reducing competi...

  12. Relationship-centred care: antidote, guidepost or blind alley? The epistemology of 21st century health care.

    Science.gov (United States)

    Wyer, Peter C; Alves Silva, Suzana; Post, Stephen G; Quinlan, Patricia

    2014-12-01

    Contemporary health care is increasing in complexity and lacks a unifying understanding of epistemology, methodology and goals. Lack of conceptual consistency in concepts such as 'patient-centred care' (PCC) typifies system-wide discordance. We contrast the fragmented descriptions of PCC and related tools to its own origins in the writings of Balint and to a subsequent construct, relationship-centred care (RCC). We identify the explicit and elaborated connection between RCC and a defined epistemological foundation as a distinguishing feature of the construct and we demonstrate that this makes possible the recognition of alignments between RCC and independently developed constructs. Among these, we emphasize Schon's reflective practice, Nonaka's theory of organizational knowledge creation and the research methodology of realist synthesis. We highlight the relational principles common to these domains and to their common epistemologies and illustrate unsatisfying consequences of adherence to less adequate epistemological frameworks such as positivism. We offer RCC not as an 'antidote' to the dilemmas identified at the outset but as an example that illuminates the value and importance of explicit identification of the premises and assumptions underlying approaches to improvement of the health care system. We stress the potential value of identifying epistemological affinities across otherwise disparate fields and disciplines. © 2014 John Wiley & Sons, Ltd.

  13. Up and down the blind alley: population divergence with scant gene flow in an endangered tropical lineage of Andean palms (Ceroxylon quindiuense clade: Ceroxyloideae).

    Science.gov (United States)

    Sanín, María José; Zapata, Patricia; Pintaud, Jean-Christophe; Galeano, Gloria; Bohórquez, Adriana; Tohme, Joseph; Hansen, Michael Møller

    2017-02-10

    Given the geographical complexity of the Andes, species distributions hold interesting information regarding the history of isolation and gene flow across geographic barriers and ecological gradients. Moreover, current threats to the region’s enormous plant diversity pose an additional challenge to the understanding of these patterns. We explored the geographic structure of genetic diversity within the Ceroxylon quindiuense species complex (wax palms) at a regional scale, using a model-based approach to disentangle the historical mechanisms by which these species have dispersed over a range encompassing 17° of latitude in the tropical Andes. A total of 10 microsatellite loci were cross-amplified in 8 populations of the 3 species comprising the C. quindiuense complex. Analyses performed include estimates of molecular diversity and genetic structure, testing for genetic bottlenecks and an evaluation of the colonization scenario under approximate Bayesian computation. We showed that there was a geographical diversity gradient reflecting the orogenetic pattern of the northern Andes and its end at the cordilleras facing the Caribbean Sea. A general pattern of diversity suggests that the cordilleras of Colombia have served as historical recipients of gene flow occurring only scantly along the northern Andes. We provided evidence of important isolation between the largest populations of this complex, suggesting that both historical constraints to dispersal but also current anthropogenic effects might explain the high levels of population structuring. We provide a list of advisable measures for conservation stakeholders.

  14. A European and Swedish perspective on ICT – policies and strategies in education. National and institutional pathways: crossings, blind alleys and uphill slopes

    Directory of Open Access Journals (Sweden)

    Henrik Hansson

    2004-04-01

    Full Text Available This paper aims at answering the following questions: 1. What general goals do politicians in Europe express in national policy documents for the integration of information and communication technology (ICT in their education systems? To develop that theme further we explored the situation in our own country Sweden as a case. 2. What policies and strategies for ICT in education do leaders of Swedish higher education institutions develop? 3. How do Swedish national priorities and academic institutional interests match? The globalisation of education forces different value systems to meet. There is on the national level highly different political values on what kind of education system to prefer – the Scandinavian model and the American model are two extremes. There are also very different values inherent in higher education institutions, the academia, - compared with the values and visions held by the political leaders. These value differences between and within countries are elaborated and discussed. A Swedish, Scandinavian and European perspective is adopted, but a wider international outlook is also given. It is suggested that the value conflicts, often not explicit, understood or recognised, are one of the major inhibitors for systemic change. The direction of change cannot be taken for granted – the driving forces pull in opposing directions. Different visions of the future struggle to be fulfilled.

  15. A European and Swedish perspective on ICT – policies and strategies in education. National and institutional pathways: crossings, blind alleys and uphill slopes

    Directory of Open Access Journals (Sweden)

    Henrik Hansson

    2004-04-01

    The globalisation of education forces different value systems to meet. There is on the national level highly different political values on what kind of education system to prefer – the Scandinavian model and the American model are two extremes. There are also very different values inherent in higher education institutions, the academia, - compared with the values and visions held by the political leaders. These value differences between and within countries are elaborated and discussed. A Swedish, Scandinavian and European perspective is adopted, but a wider international outlook is also given. It is suggested that the value conflicts, often not explicit, understood or recognised, are one of the major inhibitors for systemic change. The direction of change cannot be taken for granted – the driving forces pull in opposing directions. Different visions of the future struggle to be fulfilled.

  16. Nutrient input on rocket growth and soil microbial activity in alley cropping of pigeon pea Aporte de nutrientes em rúcula e atividade microbiana do solo em cultivo com aléias de guandu

    Directory of Open Access Journals (Sweden)

    Márcio Sampaio Pimentel

    2012-03-01

    Full Text Available The effects of organic fertilization combining cattle manure and pigeon pea shoots on the culture of rocket, planted with one or two plants per hole, including soil microbial biomass carbon, soil respiration, the metabolic quotient, soil fumigation labile carbon, and the dry matter content and total N, K, P, Ca and Mg contents in the leaves and roots of rocket were investigated. The experimental design was randomized blocks in a 2 × 2 × 2 factorial experiment: 0 and 160 kg ha-1 N from cattle manure, 0 and 160 kg ha-1 N from pigeon pea shoots, and one or two plants per hole, with three replicates. The most significant and positive correlations were obtained between leaf K × soil respiration, microbial biomass × leaf N and root Ca × metabolic quotient. The use of 160 kg ha-1 N from cattle manure along with 160 kg ha-1 N from pigeon pea shoots with two plants per hole resulted in a lower relative loss of C-CO2; the same result was found for the treatment of two plants per hole fertilized with 160 kg ha-1 N from cattle manure. Increased leaf and root N contents were observed in the treatment that combined two plants in each plot, fertilized with 160 kg ha-1 N from pigeon pea shoots, whereas the highest dry matter content was obtained by using one plant per hole, specifically: combining one plant per hole without fertilization; one plant per hole fertilized with 160 kg ha-1 N from pigeon pea shoots; and one plant per hole fertilized with 160 kg ha-1 N from cattle manure and pigeon pea shoots.Investigou-se o efeito da adubação orgânica combinando esterco bovino, ramas de guandu e densidade populacional por cova na cultura da rúcula sobre carbono da biomassa microbiana do solo, respiração do solo, quociente metabólico, carbono lábil de solo fumigado, teor de matéria seca e conteúdo de N-total, K, P, Ca e Mg foliar e radicular de rúcula. O delineamento experimental adotado foi blocos ao acaso em ensaio fatorial 2 x 2 x 2 e três repetições: 0 e 160 kg ha-1 de N de esterco bovino, 0 e 160 kg ha-1 de N de ramas de guandu e uma e duas plantas por cova. As correlações mais significativas e positivas foram obtidas entre K foliar x respiração do solo, N foliar x biomassa microbiana e Ca radicular x quociente metabólico. A utilização de 160 kg ha-1 de N de esterco bovino em conjunto com 160 kg ha-1 de N de ramas de guandu com duas plantas por cova refletiu em menor perda relativa de C-CO2, o mesmo ocorrendo com o tratamento de duas plantas por cova adubada apenas com 160 kg ha-1 de N de esterco bovino. Maior conteúdo de N foliar e radicular foi observado no tratamento combinando duas plantas por cova adubada com 160 kg ha-1 de N de ramas de guandu, enquanto maior teor de matéria seca foi obtido usando uma planta por cova, principalmente, nas combinações sem adubação; com 160 kg ha-1 de N de ramas de guandu e com 160 kg ha-1 de N de esterco bovino e ramas de guandu.

  17. The Gay Artist as Tragic Hero in The Picture of Dorian Gray

    OpenAIRE

    Alley, Henry

    2009-01-01

    In his article "The Gay Artist as Tragic Hero in The Picture of Dorian Gray" Henry M. Alley discusses the central artistic figure in Oscar Wilde's novel, Basil Hallward. As the novel's tragic protagonist, he commands the most pity and fear and serves as the most dynamic member of the dramatis personae. Alley contextualizes his discussion within Aristotle's Poetics, contemporary criticism, as well as Wilde's own comments. In addition, Alley looks at Hallward's attempt to hide or censor his gay...

  18. Changes in some soil physical properties and yield of maize Grown ...

    African Journals Online (AJOL)

    Prof. Ogunji

    hedgerow trees were pruned periodically to prevent shading, and pruned materials removed from the plots to avoid compounding of nutrients in the alley plots. Soil Sampling: Auger soil samples were randomly taken plot by plot from the alley cropping system before land preparation to form composite samples. The samples ...

  19. The Perspective Structure of Visual Space

    Science.gov (United States)

    2015-01-01

    Luneburg’s model has been the reference for experimental studies of visual space for almost seventy years. His claim for a curved visual space has been a source of inspiration for visual scientists as well as philosophers. The conclusion of many experimental studies has been that Luneburg’s model does not describe visual space in various tasks and conditions. Remarkably, no alternative model has been suggested. The current study explores perspective transformations of Euclidean space as a model for visual space. Computations show that the geometry of perspective spaces is considerably different from that of Euclidean space. Collinearity but not parallelism is preserved in perspective space and angles are not invariant under translation and rotation. Similar relationships have shown to be properties of visual space. Alley experiments performed early in the nineteenth century have been instrumental in hypothesizing curved visual spaces. Alleys were computed in perspective space and compared with reconstructed alleys of Blumenfeld. Parallel alleys were accurately described by perspective geometry. Accurate distance alleys were derived from parallel alleys by adjusting the interstimulus distances according to the size-distance invariance hypothesis. Agreement between computed and experimental alleys and accommodation of experimental results that rejected Luneburg’s model show that perspective space is an appropriate model for how we perceive orientations and angles. The model is also appropriate for perceived distance ratios between stimuli but fails to predict perceived distances. PMID:27648222

  20. 46 CFR 132.130 - Fire stations.

    Science.gov (United States)

    2010-10-01

    ... a single length of hose. (b) Each part of the main machinery space, including the shaft alley if it... to protect its hose from heavy weather. (n) Each section of fire hose must be lined commercial fire...

  1. 26 CFR 1.263A-3 - Rules relating to property acquired for resale.

    Science.gov (United States)

    2010-04-01

    ..., depreciation, and insurance of vehicles and equipment; tools; telephone; travel; and the general and... dealership physically separated by an alley or an access road would generally be considered one retail sales...

  2. Design & development of the LCO-140H series hydraulic hybrid low floor transit bus.

    Science.gov (United States)

    2012-09-01

    Automation Alley, Altair, and the Federal Transit Administration (FTA), in a public-private partnership, teamed up to advance a new transit bus initiative that would improve Americas local and regional transit systems while requiring no infrastruc...

  3. 45 CFR 73a.735-401 - General provisions.

    Science.gov (United States)

    2010-10-01

    ... employees (defined in § 73a.735-502) will not generally be granted approval to: (1) Manage or direct an... the purpose of the establishment, e.g., hotels, theaters, bowling alleys, and sports arenas. (2) Sales...

  4. Bicycle safety

    Science.gov (United States)

    ... local sporting goods store, sports facility, or bike shop can help make sure your helmet fits properly. ... sidewalks, children need to learn to watch for cars pulling out from driveways and alleys. Also, teach ...

  5. Sheep laterality.

    Science.gov (United States)

    Anderson, Dean M; Murray, Leigh W

    2013-01-01

    Turning preferences among 309 white-faced ewes were individually evaluated in an enclosed, artificially lit T-maze, followed by each ewe choosing either a right or left return alley to return to peers. Data recorded included time in the start box, time in the T-maze, exit arm chosen to leave the T-maze, and return alley. Right and left arms of the T-maze were chosen 65.7% and 34.3% of the time, respectively, while right and left return alleys were chosen 32.4% and 67.6%, respectively. Exit arm and return alley were not independently chosen (p laterality was not related (α =.05) to time of day the test was administered, ewe's age or genetics, most recent liveweight, or most recent shorn fleece weight. The mean time spent in the start box (21 s) was not related to exit arm (p =.947) or return alley (p =.779). Mean time (15 s) spent in the T-maze was not related to exit arm (p =.086) or return alley (p =.952). More research will be required to understand sheep turning laterality and how it can impact working facilities and research equipment.

  6. Journal of Agriculture and Food Sciences - Vol 14, No 2 (2016)

    African Journals Online (AJOL)

    Comparative economic assessment of the effect of selected fallow species for soil amendment on the yield of sweetpotato (Ipomoea batatas) alley in the Guinea savannah of Nigeria · EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. J.E. Ewuziem, P.O. Anyaegbu, 1-14.

  7. Comparative economic assessment of the effect of selected fallow ...

    African Journals Online (AJOL)

    The study focused on the comparative economic assessment of the effect of selected fallow species for soil amendment on the yield of sweetpotato (Ipomea batatas) alley in the Guinea Savannah of Nigeria. As a result of the increasing cost and scarcity of inorganic fertilizers, sweetpotato production has been on the decline ...

  8. African Crop Science Journal - Vol 7, No 2 (1999)

    African Journals Online (AJOL)

    B R Ntare, F Waliyar. Heterotic responses of tetraploid and triploid plantain hybrids in southeast Nigeria under alley-cropping. V Wilson, A Tenkouano. Inheritance of male sterility in finger millet. S C Gupta. Agronomic performances, yield stability and field disease reaction of cassava genotypes in the sub-humid forest region ...

  9. Petersburg Builds a Health Program. Bulletin, 1949, No. 9

    Science.gov (United States)

    Bathurst, Effie G.

    1949-01-01

    This bulletin is about an invasion that was welcomed. It tells how boys and girls of Petersburg, West Virginia, invaded their town to learn and to serve. Hotels, school lunchroom, alleys, creeks and swamps, unused park area, and other resources were utilized. The young invaders were welcomed by the adult citizens of the town because the principal…

  10. Economics of intercropping loblolly pine and switchgrass for bioenergy markets in the southeastern United States

    Science.gov (United States)

    Andres Susaeta; Janaki Alavalapati Pankaj Lal; D. Evan Mercer; Douglas Carter

    2012-01-01

    Abstract The main objective of this study was to assess the economics of alley cropping of loblolly pine (Pinus taeda L.) and switchgrass (Panicum virgatum) in the southern United States. Assuming a price range of switchgrass between $15 and $50 Mg-1 and yield of 12 Mg ha-1 year-1, we investigated the effect of switchgrass production on the optimal forest management...

  11. Risk management for food and beverage industry using Australia/New Zealand 4360 Standard

    Science.gov (United States)

    Kristina, S.; Wijaya, B. M.

    2017-12-01

    This research aims to identifying, measuring and establishing risk in food and beverage industry. The risk management is implemented by referring to Australia/New Zealand 4360 Standard which has four phases such as problem formulation, risk analysis, risk characterization, and risk management. The implementation of risk management is done by case study at Back Alley Café. Based on the risk identification result, there are 59 risks were found in Back Alley Café. The risk identification is conducted based on observation and interview with the café manager who understand the condition of Back Alley Café properly. Based on the assessment of impact and probability, the risk mapping produced four risks at extreme level, 16 risks at high level, 24 risks at medium level, and 18 risks at low level. The strategy was designed as the risk mitigation after the risk mapping for the extreme and high level. The strategy which is given as the prevention or treatment of risk in Back Alley Café is divided into three. There are reducing the risk, sharing the risk and accepting the risk. The strategy is then implemented for each relevant activities.

  12. 27 CFR 555.11 - Meaning of terms.

    Science.gov (United States)

    2010-04-01

    ..., spaces, or similar defects. Highway. Any public street, public alley, or public road, including a..., State of residence, telephone numbers (home and work), country or countries of citizenship, and position... cartons for individual public displays and for the loading of packaged displays for shipment to purchasers...

  13. Prevalence of common MEFV mutations and carrier frequencies in a ...

    Indian Academy of Sciences (India)

    and HOSSEIN NAJMABADI1,2∗. 1Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Koodakyar Alley, Daneshjoo Blvd.,. Evin St., 1985713834 Tehran, Iran .... red to the Kariminejad-Najmabadi Pathology and Genetics. Center by their physicians for counselling and genetic analy-.

  14. Prevalence of common MEFV mutations and carrier frequencies in a ...

    Indian Academy of Sciences (India)

    Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Koodakyar Alley, Daneshjoo Blvd., Evin St., 1985713834 Tehran, Iran; Molecular Biology Division, Kariminejad-Najmabadi Pathology and Genetics Center, #2, Fourth St., Hasan Seyf Ave., Sanat Sq., Shahrak Gharb, Tehran 14667-13713, ...

  15. Our Hidden Prejudices, on Trial

    Science.gov (United States)

    Glenn, David

    2008-01-01

    In October 2006, a New Hampshire police officer named Michael Briggs was shot to death in an alley. His accused killer, Michael Addison, has been charged with capital murder. It is the state's first death-penalty case in more than 30 years, and it is racially fraught: Addison is African-American, and Briggs was white. New Hampshire has a long list…

  16. Nematode populations as influenced by Leucaena leucocephala ...

    African Journals Online (AJOL)

    study to determine the effect of Flemingia congesta and Leucaena leucocephala hedgerows, as sources of mulch, on the population of nematode species in an alley cropping system was conducted at the Crops Research Institute, Kumasi, Ghana from May 1991 to February 1994. Treatments comprised Leucaena ...

  17. Author Details

    African Journals Online (AJOL)

    Adedire, MO. Vol 1, No 1 (2004) - Articles The effect of fertilization and pruning additives of two leguminous hedgerow crops on maize yield in an alley farm. Abstract · Vol 2, No 2 (2005) - Articles Agroforestry approaches to soil fertility improvement. Abstract. ISSN: 1597-2836. AJOL African Journals Online. HOW TO USE ...

  18. Nigeria Agricultural Journal - Vol 43 (2012)

    African Journals Online (AJOL)

    Effect of Pigeon Pea Hedgerow Alley Management on the Growth and productivity of Ginger in a Tropical Ultisol in South Eastern Nigeria · EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. EN Nwaogu, PO Nwosu, AO Ano, JC Okonkwo ...

  19. African Journal of Biotechnology - Vol 5, No 14 (2006)

    African Journals Online (AJOL)

    Effect of mycorrhiza and pruning regimes on seasonality of hedgerow tree mulch contribution to alley-cropped cassava in Ibadan, Nigeria · EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. MO LIASU, MO ATAYESE, O OSONUBI ...

  20. Author Details

    African Journals Online (AJOL)

    Adeola, AO. Vol 1, No 1 (2004) - Articles The effect of fertilization and pruning additives of two leguminous hedgerow crops on maize yield in an alley farm. Abstract · Vol 1, No 2 (2004) - Articles Tree conservation practices among dry season vegetable farmers: a case study of Abeokuta Abstract. ISSN: 1597-2836.

  1. Contour hedgerows and grass strips in erosion and runoff control in semi-arid Kenya

    NARCIS (Netherlands)

    Kinama, J.M.; Stigter, C.J.; Ong, C.K.; Ng'ang'a, J.K.; Gichuki, F.N.

    2007-01-01

    Most early alley cropping studies in semi-arid Kenya were on fairly flat land while there is an increase in cultivated sloping land. The effectiveness of aging contour hedgerows and grass strips for erosion control on an about 15% slope of an Alfisol was compared. The five treatments were Senna

  2. Author Details

    African Journals Online (AJOL)

    Effect of Pigeon Pea Hedgerow Alley Management on the Growth and productivity of Ginger in a Tropical Ultisol in South Eastern Nigeria Abstract · Vol 43 (2012) - Articles Participatory Rural Appraisal of Farmers' Preferences For Yellow Cassava Cultivars and Intervention Through Breeding Abstract. ISSN: 0300-368X.

  3. Author Details

    African Journals Online (AJOL)

    Nwosu, PO. Vol 43 (2012) - Articles Effect of Pigeon Pea Hedgerow Alley Management on the Growth and productivity of Ginger in a Tropical Ultisol in South Eastern Nigeria Abstract. ISSN: 0300-368X. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about ...

  4. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 118 of 118 ... Vol 1, No 1 (2004), The effect of fertilization and pruning additives of two leguminous hedgerow crops on maize yield in an alley farm, Abstract. A M Awolaja, AO Adeola, IO Aiyelaagbe, MO Adedire. Vol 2, No 2 (2005), The effectiveness of different forms of organic amendments for maize production in ...

  5. JUST Vol. 28 No. 2, August, 2007

    African Journals Online (AJOL)

    2007-08-02

    Aug 2, 2007 ... forestry (alley cropping) systems, it became nec- essary to evaluate/assess the performance of gar- den eggs growing in hedgerows of Leucaena leucocephala. MATERIALS AND METHODS. Study Area and components of the study. The study was in two parts: i) Laboratory Analysis on determination of dry.

  6. Climatic forcing before, during, and after the 8.2 Kyr B.P. global ...

    Indian Academy of Sciences (India)

    has drawn considerable attention of climate mod- elers (Alley and Agustsdottir ... climate. Based on the theoretical model for cosmic. Keywords. 8.2 Kyr cooling event; paleoclimate; atmospheric. 14. C; atmospheric δ18. O; enhanced oceanic mixing; cosmogenic. 14. C in ice .... tion of exchange of carbon dioxide between.

  7. Cultural Resource Survey of Carrollton Bend Revetment, Mississippi River M-105.7 to 101.7-L, Jefferson and Orleans Parishes, Louisiana

    Science.gov (United States)

    1993-02-26

    bowling greens, cricket clubs, tenpin alleys, and card games, all available in Carrollton (Bezou 1973:73) According to the Zimpel map of 1834, the...During the Period of the Civil War. The Plimpton Press, Norwood, Massachusetts. Casey, Powell A. 1983 Encyclopedia of Forts, Posts, Named Camps, and

  8. The Status of Agroforestry in the South

    Science.gov (United States)

    F. Christian Zinkhan; D. Evan.  Mercer

    1997-01-01

    Southern agroforestty has emerged as a significant research topic. Research results indicate that agroforestty can address such sustainability problems as erosion and water pollution, while improving economic performance in selected situatiOII& Silvopastoral systems are the most commonly adopted agroforestty application in the region; le!6-common alley-cropping...

  9. The Alienated Protagonist In Bessie Head's A Question Of Power ...

    African Journals Online (AJOL)

    Elizabeth's rights are violently attacked from many angles and her feelings of resentment caused by the great injustice against her dignity reduces her to a state of insanity which takes her through many dark alleys of subconscious horrible experiences. For three or four years, she is insane believing that Sello sat in her ...

  10. Bowen Journal of Agriculture - Vol 1, No 1 (2004)

    African Journals Online (AJOL)

    The effect of fertilization and pruning additives of two leguminous hedgerow crops on maize yield in an alley farm · EMAIL FULL TEXT EMAIL FULL TEXT DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. A M Awolaja, AO Adeola, IO Aiyelaagbe, MO Adedire, 21-34. http://dx.doi.org/10.4314/bja.v1i1.41851 ...

  11. Masters of time how wormholes, snakewood and assaults on the big bang have brought mystery back to the cosmos

    CERN Document Server

    Boslough, John

    1992-01-01

    A cosmic mystery story of blind alleys where The Answer lurks perpetually just around the corner... Masters of Time tells of the eroic quest for new, ever stranger theoretical worlds, the elusive explanation of the cat's cradle of crisscrossing forces that seem to rule the universe.

  12. JUST Vol. 28 No. 2, August, 2007

    African Journals Online (AJOL)

    level of the soil may account for the lack of sig- nificant soil improvement even in plots mulched and/or treated with fertilizer. This confirms re- ports on a Leucaena alley cropping trials in Zam-. 66 Journal of Science and Technology, Volume 27 no. 2, August, 2007. Evaluation of the effect of hedgerow intercropping .

  13. The spatio-temporal variability of groundwater depth in a typical ...

    Indian Academy of Sciences (India)

    development and agricultural irrigation worldwide. (Alley et al. 2002; WWAP 2009). In arid regions, especially, groundwater resolves spatial and tempo- ral disconnects between water supply and demand, and allows us to plant crops and develop agriculture. Despite its importance to our life and produc- tion, groundwater is ...

  14. Author Details

    African Journals Online (AJOL)

    Onu, DO. Vol 35 (2006) - Articles Analysis of the factors influencing farmers' adoption of alley farming technology under intensified agriculture in Imo State, Nigeria; using a qualitative choice model. Abstract. ISSN: 2413-3221. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  15. Cocaine Self-Administration Alters the Relative Effectiveness of Multiple Memory Systems during Extinction

    Science.gov (United States)

    Gabriele, Amanda; Setlow, Barry; Packard, Mark G.

    2009-01-01

    Rats were trained to run a straight-alley maze for an oral cocaine or sucrose vehicle solution reward, followed by either response or latent extinction training procedures that engage neuroanatomically dissociable "habit" and "cognitive" memory systems, respectively. In the response extinction condition, rats performed a runway approach response…

  16. Okla. Tornado Renews Debate on Storm Safety

    Science.gov (United States)

    Shah, Nirvi

    2013-01-01

    As soon as the winds that left seven students in Moore, Okla., dead last month had calmed, and more storms blew through the same area less than two weeks later, questions about the safety of schools in a region labeled Tornado Alley rose amid the rubble. While better design of new schools and thorough emergency training and practice may be in…

  17. Hearings Before the Subcommittee on Space Science and Applications of the Committee on Science and Astronautics. U.S. House of Representatives, Ninety-Third Congress, Second Session

    Science.gov (United States)

    1974-07-18

    chance you will have of not running down a blind alley. I like*ompetition. I think it generates a lot of incentives, if it were Uanaged right, and I...or will, to develop a major technological atsrnastiv* to the interna comibution tngins. I~et me add, here, that I believe it is Premature to judoe

  18. Managing the soil for enhanced food production in Nigeria ...

    African Journals Online (AJOL)

    The paper reviews soil management practices for enhanced food production in Nigeria. The different types of soil in Nigeria were discussed. The paper further gave details of the management practices that farmers could benefit from to enhance their productivity. These included alley cropping, agro-forestry, minimum ...

  19. USSR Report: Materials Science and Metallurgy

    Science.gov (United States)

    1985-10-29

    Steels (I.K. Pokhodnya, A.V. Bulat , et al.; AVTOMATICHESKAYA SVARKA, No 5, May 85) •• 69 Classification of Heat-Resistant Nickel Alleys According to...84, in final form 27 Jun 84) pp 20-22 POKHODNYA, I.K., academician, UkSSR Academy of Sciences, BULAT , A.V., candidate of technical sciences

  20. 76 FR 15366 - Additional Designation of Entities Pursuant to Executive Order 13382

    Science.gov (United States)

    2011-03-21

    ... efforts to manufacture, acquire, possess, develop, transport, transfer or use such items, by any person or...: 85225372603 Logistic Smart Limited, c/o Soroush Sarzamin Asatir (SSA) Ship Management Co, Shabnam Alley Golriz....net ">http://www.ssa- smc.net ; Telephone: 982126100191; Fax: 982126100192 Smart Day Holdings Group...

  1. International Journal of Tropical Agriculture and Food Systems - Vol ...

    African Journals Online (AJOL)

    Ornamental landscaping for water erosion control at the federal college of agriculture, Ishiagu, Nigeria · EMAIL FULL TEXT EMAIL FULL TEXT ... Effect of alley cropping with Gliricidia sepium and NPK fertilizer application on soil chemical properties and yield of Amaranthus cruntus l · EMAIL FULL TEXT EMAIL FULL TEXT

  2. Consumption of resources and the legacy of technology. The dimension of time in ethics

    International Nuclear Information System (INIS)

    Hubig, C.

    1994-01-01

    The ethical discussion on nuclear energy has ended up in blind alleys. The paper describes the difficulties in determining priorities and deplores the prevalence of fundamentalistic views on this issue. As a way out of these conflicts it advocates a consensus on the use of different kinds of energy services. (orig.) [de

  3. Integrating walnut and other hardwoods into agroforestry practices

    Science.gov (United States)

    Shibu. Jose

    2013-01-01

    Agroforestry systems have been proposed as alternative, environmentally benign systems for agricultural production in temperate North America. Walnut and other hardwoods have been successfully integrated in most agroforestry practices include alley cropping, silvopastural, windbreaks, and riparian buffers. Because of walnuts relatively thin crowns and nut production,...

  4. Installation Restoration Program. Phase 2 - Confirmation/ Quantification. Stage 2 for McChord Air Force Base, Washington

    Science.gov (United States)

    1986-04-30

    from coal to natural gas, and the construction of a variety of other support services ranging from a passenger terminal to a bowling alley and canine ...bulk fuel sto- rage tanks. Chemical characterization of the groundwater contami- nants indicates that Area A contamination is not related to the

  5. Fuck Peer Review

    Directory of Open Access Journals (Sweden)

    Vincent W.J. van Gerven Oei

    2013-05-01

    Full Text Available continent. proposes that the thinking of the Academy be freed to be thought elsewhere, in the alleys and doorways of the village and cities, encountered not in the strictly defined spaces of the classroom and blackboard (now white but anticipated and found where thinking occurs.

  6. Author Details

    African Journals Online (AJOL)

    Aiyelaagbe, IO. Vol 1, No 1 (2004) - Articles The effect of fertilization and pruning additives of two leguminous hedgerow crops on maize yield in an alley farm. Abstract. ISSN: 1597-2836. AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's ...

  7. Discovery and Innovation

    African Journals Online (AJOL)

    A study was conducted in two local government areas of Oyo State, Nigeria, on the adoption of new varieties of maize and cassava, new crops – cowpea and soybean and a new farm management technique – alley farming. It was hypothesised that the three types of innovation have different characteristics, which make ...

  8. Trophic garnishes: cat-rat interactions in an urban environment.

    Directory of Open Access Journals (Sweden)

    Gregory E Glass

    Full Text Available BACKGROUND: Community interactions can produce complex dynamics with counterintuitive responses. Synanthropic community members are of increasing practical interest for their effects on biodiversity and public health. Most studies incorporating introduced species have been performed on islands where they may pose a risk to the native fauna. Few have examined their interactions in urban environments where they represent the majority of species. We characterized house cat (Felis catus predation on wild Norway rats (Rattus norvegicus, and its population effects in an urban area as a model system. Three aspects of predation likely to influence population dynamics were examined; the stratum of the prey population killed by predators, the intensity of the predation, and the size of the predator population. METHODOLOGY/PRINCIPAL FINDINGS: Predation pressure was estimated from the sizes of the rat and cat populations, and the characteristics of rats killed in 20 alleys. Short and long term responses of rat population to perturbations were examined by removal trapping. Perturbations removed an average of 56% of the rats/alley but had no negative long-term impact on the size of the rat population (49.6+/-12.5 rats/alley and 123.8+/-42.2 rats/alley over two years. The sizes of the cat population during two years (3.5 animals/alley and 2.7 animals/alley also were unaffected by rat population perturbations. Predation by cats occurred in 9/20 alleys. Predated rats were predominantly juveniles and significantly smaller (144.6 g+/-17.8 g than the trapped rats (385.0 g+/-135.6 g. Cats rarely preyed on the larger, older portion of the rat population. CONCLUSIONS/SIGNIFICANCE: The rat population appears resilient to perturbation from even substantial population reduction using targeted removal. In this area there is a relatively low population density of cats and they only occasionally prey on the rat population. This occasional predation primarily removes the

  9. An analysis of travel costs on transport of load and nest building in golden hamster.

    Science.gov (United States)

    Guerra, Rogerio F.; Ades, Cesar

    2002-03-28

    We investigated the effects of travel costs on transporting nest material and nest-building activity in golden hamsters. Nest-deprived animals were submitted to run alleys 30, 90 and 180 cm long to access a source containing paper strips as nest material (Experiment 1) or were submitted to the same travel costs in 24-h experimental sessions (Experiment 2). We noted that increased travel costs were related to a decreased number of trips to the source, larger amounts (cm(2)) of nest material transported per trip (although total loads also decreased in longer alleys), longer intervals between trips, and increased time spent at the source and in nest building activity. Foraging efficiency (i.e. size of load divided by the time spent at the source) decreased as a function of travel costs, and animals transported their loads in two fundamental ways: in 30-cm alleys, they simply used their mouth to pull the paper strips, but in 90- or 180-cm alleys they transported the loads in their cheek pouches. The animals were faster when returning to the home-cage and their running speed (cm/s) increased as a function of the length of the alley, showing that animals are under different environmental pressures when searching for resources and subsequently running back with the load to the nest. Both male and female subjects were sensitive to travel costs, but males engaged in nest building activity more promptly and exhibited higher mean performances in most measures. We conclude that nest material is a good reinforcer, and our major results are in accordance with the predictions of microeconomic and optimal foraging theories.

  10. The role of ecosystem services in climate and air quality in urban areas: Evaluating carbon sequestration and air pollution removal by street and park trees in Szeged (Hungary

    Directory of Open Access Journals (Sweden)

    Kiss Márton

    2015-09-01

    Full Text Available The evaluation of ecosystem services can provide essential help in incorporatating the multifunctionality of urban ecosystems in planning and management processes. Two important regulating services of urban trees, carbon sequestration and air pollution removal, are evaluated in this article for different types of tree stands (streets, parks in the city centre of Szeged (Hungary. The necessary calculations were carried out by an adaptation of the targeted model (i-Tree Eco, based on a large complete tree inventory dataset. The analyses revealed the main tendencies in differences between tree species considering the tree condition, which affects the service-providing capacity to a high degree. The effects of differences in tree management on the chosen ecosystem services were investigated by comparing two pairs of tree alleys. Based on our observations, clear cuts and complete tree alley changes are not advisable from an ecosystem service point of view.

  11. Manglende sammenhaeng mellem praestationer i et virtuelt og i et virkeligt miljø

    DEFF Research Database (Denmark)

    Konge, Lars; Bitsch, Mikael

    2010-01-01

    INTRODUCTION: Simulation-based training provides obvious benefits for patients and doctors in education. Frequently, virtual reality simulators are expensive and evidence for their efficacy is poor, particularly as a result of studies with poor methodology and few test participants. In medical...... simulated training- and evaluation programmes it is always a question of transfer to the real clinical world. To illustrate this problem a study comparing the test performance of persons on a bowling simulator with their performance in a real bowling alley was conducted. MATERIAL AND METHODS: Twenty......-five test subjects played two rounds of bowling on a Nintendo Wii and 25 days later on a real bowling alley. Correlations of the scores in the first and second round (test-retest-reliability) and of the scores on the simulator and in reality (criterion validation) were studied and there was tested for any...

  12. Facility target insert shielding assessment

    Energy Technology Data Exchange (ETDEWEB)

    Mocko, Michal [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-10-06

    Main objective of this report is to assess the basic shielding requirements for the vertical target insert and retrieval port. We used the baseline design for the vertical target insert in our calculations. The insert sits in the 12”-diameter cylindrical shaft extending from the service alley in the top floor of the facility all the way down to the target location. The target retrieval mechanism is a long rod with the target assembly attached and running the entire length of the vertical shaft. The insert also houses the helium cooling supply and return lines each with 2” diameter. In the present study we focused on calculating the neutron and photon dose rate fields on top of the target insert/retrieval mechanism in the service alley. Additionally, we studied a few prototypical configurations of the shielding layers in the vertical insert as well as on the top.

  13. Rapping, Blogging, and Plain Language: The Stars of Science Communication Events

    Science.gov (United States)

    Adams, Mary Catherine

    2014-02-01

    "What you heard in the poetry, what you heard in the stories and the songs here tonight—there are people in the world who will get that a lot better than our posters," said Richard Alley to a packed crowd of Earth and space scientists at the Fall Meeting's second annual Open Mic Night. "Not only are they going to be happier because of it, but so are we."

  14. Nitrogen Mineralization From Prunings Of Three Multipurpose ...

    African Journals Online (AJOL)

    A study was conducted on soil N mineralization in the field in an alley cropping system between 2003 -2005 under two soil depths (0-30cm and 30-60cm) through the utilization of an in-situ soil core technique for studying fluxes of mineral N and its uptake by maize. Result obtained indicated that N mineralization was in the ...

  15. Microbial Biomass Changes during Decomposition of Plant Residues in a Lixisol

    Directory of Open Access Journals (Sweden)

    Kachaka, SK.

    2003-01-01

    Full Text Available A lixisol was amended with four different alley cropping species: Senna siamea, Leucaena leucocephala, Dactyladenia barteri and Flemingia macrophylla. Soil samples were incubated for 140 days at 25 °C and the soil microbial biomass was determined by the ninhydrin extraction method along the incubation period. The soil microbial biomass values ranged between 80 and 600 mg.kg-1 and followed, in all cases, the decreasing order: Leucaena> Senna> Flemingia> Dactyladenia.

  16. Establishing vegetable agroforestry system research at AVRDC - The World Vegetable Center

    OpenAIRE

    Palada, Manuel C.; Wu, D.; Luther, G.C.

    2008-01-01

    Tree-crop interactions in agroforestry systems involving vegetable crops have not been studied extensively, for previous research in agroforestry focused on agronomic arable field crops. A vegetable agroforestry system was established at the World Vegetable Center (AVRDC) to study tree-crop interactions in alley cropping vegetables with tropical fruit trees in terms of competition and/or complementarity; to investigate the influence of tree crops on natural habitat and insect pest population ...

  17. Development of a Telemetry and Yield-Mapping System of Olive Harvester

    Directory of Open Access Journals (Sweden)

    Francisco J. Castillo-Ruiz

    2015-02-01

    Full Text Available Sensors, communication systems and geo-reference units are required to achieve an optimized management of agricultural inputs with respect to the economic and environmental aspects of olive groves. In this study, three commercial olive harvesters were tracked during two harvesting seasons in Spain and Chile using remote and autonomous equipment that was developed to determine their time efficiency and effective based on canopy shaking for fruit detachment. These harvesters work in intensive/high-density (HD and super-high-density (SHD olive orchards. A GNSS (Global Navigation Satellite System and GSM (Global System for Mobile Communications device was installed to track these harvesters. The GNSS receiver did not affect the driver’s work schedule. Time elements methodology was adapted to the remote data acquisition system. The effective field capacity and field efficiency were investigated. In addition, the field shape, row length, angle between headland alley and row, and row alley width were measured to determinate the optimum orchard design parameters value. The SHD olive harvester showed significant lower effective field capacity values when alley width was less than 4 m. In addition, a yield monitor was developed and installed on a traditional olive harvester to obtain a yield map from the harvested area. The hedge straddle harvester stood out for its highly effective field capacity; nevertheless, a higher field efficiency was provided by a non-integral lateral canopy shaker. All of the measured orchard parameters have influenced machinery yields, whether effective field capacity or field efficiency. A saving of 40% in effective field capacity was achieved with a reduction from 4 m or higher to 3.5 m in alley width for SHD olive harvester. A yield map was plotted using data that were acquired by a yield monitor, reflecting the yield gradient in spite of the larger differences between tree yields.

  18. Functional tuning of the catalytic residue pKa in a de novo designed esterase.

    Science.gov (United States)

    Hiebler, Katharina; Lengyel, Zsófia; Castañeda, Carlos A; Makhlynets, Olga V

    2017-09-01

    AlleyCatE is a de novo designed esterase that can be allosterically regulated by calcium ions. This artificial enzyme has been shown to hydrolyze p-nitrophenyl acetate (pNPA) and 4-nitrophenyl-(2-phenyl)-propanoate (pNPP) with high catalytic efficiency. AlleyCatE was created by introducing a single-histidine residue (His 144 ) into a hydrophobic pocket of calmodulin. In this work, we explore the determinants of catalytic properties of AlleyCatE. We obtained the pK a value of the catalytic histidine using experimental measurements by NMR and pH rate profile and compared these values to those predicted from electrostatics pK a calculations (from both empirical and continuum electrostatics calculations). Surprisingly, the pK a value of the catalytic histidine inside the hydrophobic pocket of calmodulin is elevated as compared to the model compound pK a value of this residue in water. We determined that a short-range favorable interaction with Glu 127 contributes to the elevated pK a of His 144 . We have rationally modulated local electrostatic potential in AlleyCatE to decrease the pK a of its active nucleophile, His 144 , by 0.7 units. As a direct result of the decrease in the His 144 pK a value, catalytic efficiency of the enzyme increased by 45% at pH 6. This work shows that a series of simple NMR experiments that can be performed using low field spectrometers, combined with straightforward computational analysis, provide rapid and accurate guidance to rationally improve catalytic efficiency of histidine-promoted catalysis. Proteins 2017; 85:1656-1665. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

  19. Modelling Psychological Needs for User-dependent Contextual Suggestion

    Science.gov (United States)

    2014-11-01

    gallery, bakery, bar, book store, bowling alley, cafe, casino, church, city hall, department store, food, library , mosque, movie theater, museum...district, place of worship, library as another group, and park, zoo, aquarium, natural reserve as yet another group. We have manually dis- tributed...Sacramento, Anchorage, Honolulu and Lawton. And for Erie, Lancaster , Kalamazoo, Homosassa Springs, Toledo, Albuquerque and Kansas City, our system per

  20. P1-18: The Effect of Background Music on Working Memory

    OpenAIRE

    Ding-Hao Liu; Yi-Fang Shih; Pei-Jin Yang; Mei-Nian Lu; Yi-shan Su; Shiiau-hua Liu

    2012-01-01

    Many studies do visual working memory research under sundry sound conditions (Alley & Greene, 2008 Current Psychology 27 277–289; Iwanaga & Ito, 2002 Perceptual Motor Skills 94 1251–1258; Pring & Walker, 1994 Current Psychology 13 165–171). In order to understand more about background music, we modified previous studies to examine how the performance of working memory is affected by four different music conditions. Participants were randomly assigned into two groups to listen to two different...

  1. 「勤労青少年」をめぐる社会秩序の編成過程-戦間期における転職・不良化問題と「輔導」論の展開に注目して-

    OpenAIRE

    高瀬, 雅弘; Masahiro, TAKASE; 東京大学大学院; Graduate School, The University of Tokyo

    2000-01-01

    Around 1920,the number of youth flowing into the labor markets in large cities grew to excessive levels. This led to the emergence of a social problem, the "youth labor problem." It involved excessive mobility of youth and "blind-alley" workers. The situation was exacerbated by the collapse of traditional apprenticeship. The Youth Employment Service, established in 1925,was devised to deal with this newly developing phenomenon. The purpose of this paper is to examine how social institutions f...

  2. DETECTING THE GAZING ATTENTION POINTS OF YOUNG AND ELDERLY CYCLISTS.

    Science.gov (United States)

    Uetake, Teruo; Shimoda, Masahiro

    2014-06-01

    This study analyzed the perceived attention represented by "gazing" points of cyclists to expose a latent accidental factor hidden in cyclist behaviour. Eleven elderly people and 23 young people equipped with an eye camera participated in the study. From the camera images, the objects viewed by the cyclists were analyzed. A main road and a community road were used in the experiment. The objects viewed by the cyclists were categorized into nine items that would be indirectly related to the cause of bicycle traffic accidents: gates and porches, parking lots, signals, alleys, other bicycles on the road, pedestrians, signs and painted symbols on the road, schoolyards and houses, and other items. The results of the study indicated that many elderly cyclists always confirmed their safety at alley intersections along both main and community roads, whereas many young people were not so dutiful. The results for unsafe gazing behavior such as looking at a schoolyard or house while cycling were the same for the two groups in that most individuals did not look away from the road while cycling along the main and community roads. Dissimilar results, especially those for alley intersections, resulted from young people not paying due attention to objects, suggesting that such gazing behaviour could be strongly related to traffic accidents involving a bicycle.

  3. Rattle tree (Albizia lebbeck Benth. effects on potato (Solanum tuberosum L. productivity on the Jos Plateau, Nigeria

    Directory of Open Access Journals (Sweden)

    Kareem Alasi Ibraheem

    2014-01-01

    Full Text Available Field experiment was conducted in the biotite-granite area (Alfisol of the Jos Plateau, Nigeria, consisting of five cropping seasons to determine the effects of the tree rows (under alley cropping and green manure of Albizia lebbeck Benth. (rattle tree on the yield / productivity of Solanum tuberosum L. (Irish potato. The experiment was a randomized complete block design comprising five treatments and three replicates. An early maturing potato variety (Bertita was employed, its pre-sprouted tubers were planted in the alleys (spaces between the tree rows of A. lebbeck two weeks after green manure was applied (5 and 10 t ha-1, pre and post experimental soil sample analyses and cultivation operations were carried out. Results indicated that the rattle tree had profound effect on the potato growth parameters (plant height, leaf count, collar girth (at P < 0.01 and yield indices (tuber count (P < 0.05 and tuber weight (P < 0.01 due to nutrients from the green manure and nitrogen fixation activities of the rattle tree. A. lebbeck green manure application at 10 t ha-1 in the alleys of A. lebbeck hedgerows emerged as the most effective treatment in terms of growth performance and optimal yield. Collar girth and leaf count of the potato accounted for 80.4 - 91.3% of the variation in yield (R2 = 0.804 - 0.913 with collar girth having the highest value (R2 =0.910 in rainy season (rain fed cropping, while leaf count had the highest value (R2=0.913 during the dry season (irrigated cropping.

  4. Analisis Vegetasi Sebagai Dasar Pengembangan Agroforestri di DAS Mikro Desa Tukad Sumaga, Kecamatan Gerokgak, Kabupaten Buleleng

    Directory of Open Access Journals (Sweden)

    I WAYAN GEDE WIRYANTARA

    2015-06-01

    Full Text Available Vegetations Analysis As A Basic ForAgroforestry Development In Micro Watershed TukadSumaga Village, Gerokgak District, Buleleng Regency.Forest changed to agricultural hasconsciousness can effected many problems such as soil degradations, erosion, flora and fauna extinctions,floods, dryness, and even global environmental change. Agroforestry is one of solutions to protect thebiodiversity. The research was held at Micro Watershed Tukad Sumaga Village, Gerokgak District,Buleleng Regency which consist of intercropping agroforestry system, alley cropping agroforestry system,and the trees for soil conservations agroforestry system. The purpose of this research is to discoverbiodiversity and composition of vegetations species in each agroforestry system and also to find out theagroforestry management level at Micro Watershed Tukad Sumaga Village. The research result showsthat the biggest Important Value Index (INP in intercropping agroforestry system is in trees level bymango at 59.46%, scrubs and sapling level by teak at 80.13%, seddling level by gosh bean at 49.57%.The biggest INP in Alley Cropping Agroforestry System is in trees level by cashew at 150.33%, scrubsand saplings level by lamtoro at 95.26%, seedling level by legetan at 84,93%. The biggest INP in TheTrees for Soil Conservations Agroforestry System is in trees level by tamarind at 165,35%, %, scrubsand saplings level by india apple at 114.09%, seedling level by legetan at 83.98%. The calculations ofspecies biodiversity which as species variety, prevalent index, and domination index can separated themanagement level in each agroforestry system. The best management is Intercropping AgroforestrySystem. The second is The Trees for Soil Conservations Agroforestry System. The last is Alley CroppingAgroforestry System. The development of Intercropping Agroforestry System is needed because thissystem is the best. Monitoring, evaluations, and technical learning about forest and agricultural

  5. The singer and the song: Nick Cave and the archetypal function of the cover version

    OpenAIRE

    Wiseman-Trowse, Nathan J B

    2013-01-01

    Throughout his career, from The Boys Next Door, through The Birthday Party, and with The Bad Seeds, Australian singer / songwriter Nick Cave has balanced his own set of creative voices alongside those of others through his choice of cover versions. Cave’s 1986 album with The Bad Seeds, ‘Kicking Against the Pricks’, is a collection of cover versions that spans American folk idioms (‘Black Betty’, ‘Hey Joe’, ‘The Singer’), Tin-Pan-Alley balladeering (‘Something’s Gotten Hold of my Heart’, ‘By t...

  6. Groundwater and Terrestrial Water Storage

    Science.gov (United States)

    Rodell, Matthew; Chambers, Don P.; Famiglietti, James S.

    2014-01-01

    Terrestrial water storage (TWS) comprises groundwater, soil moisture, surface water, snow,and ice. Groundwater typically varies more slowly than the other TWS components because itis not in direct contact with the atmosphere, but often it has a larger range of variability onmultiannual timescales (Rodell and Famiglietti, 2001; Alley et al., 2002). In situ groundwaterdata are only archived and made available by a few countries. However, monthly TWSvariations observed by the Gravity Recovery and Climate Experiment (GRACE; Tapley et al.,2004) satellite mission, which launched in 2002, are a reasonable proxy for unconfinedgroundwater at climatic scales.

  7. Short communication: effect of stocking density on indices of cow comfort.

    Science.gov (United States)

    Krawczel, P D; Hill, C T; Dann, H M; Grant, R J

    2008-05-01

    The objective of this study was to evaluate the effects of increasing stocking density on indices of cow comfort measured over a 24-h period, during peak lying time (0000 to 0400 h), and 1 h after the afternoon milking. Holstein cows (n = 136) were assigned to 1 of 4 pens, and stocking densities of 100, 113, 131, and 142% were applied in a 4 x 4 Latin square. Video data were recorded continuously for 2 d after 5 d of acclimation to stocking density and analyzed with 10-min scan samples for the percentage of cows lying in a stall, standing in a stall, standing in the alley, and eating at the manger. Percentage of cows standing idly in the alley increased as stocking density increased above 113% (10.9, 12.0, 14.4, and 16.5% for 100, 113, 131, and 142% stocking density, respectively). Cow comfort index (CCI; cows lying down/cows contacting stalls) and stall standing index (SSI; cows standing in stall/cows contacting stalls) differed little as stocking density increased, but stall use index (SUI; cows lying in stall/cows in pen not eating) decreased beyond 113% stocking density (70.1, 70.2, 68.6, and 66.3 for 100, 113, 131, and 142% stocking density, respectively). During peak lying time, SUI decreased with increasing (80.3, 79.5, 74.8, and 69.6 for 100, 113, 131, and 142% stocking density, respectively) stocking density above 113%, whereas CCI and SSI showed little response. None of the indices varied by stocking density when they were assessed at 1 h after milking. These results suggest that more than 1 index of cow comfort may be needed at higher stocking densities to assess both stall usage and cows standing idly in an alley. At higher stocking densities, SUI was reduced, because it reflected not only stall usage but the number of cows standing idly in an alley and not actively feeding and unable to access a stall. The CCI and SSI appear to assess actual stall usage (% cows lying or standing) across the range of stocking densities evaluated in this study.

  8. Manglende sammenhaeng mellem praestationer i et virtuelt og i et virkeligt miljø

    DEFF Research Database (Denmark)

    Konge, Lars; Bitsch, Mikael

    2010-01-01

    Simulation-based training provides obvious benefits for patients and doctors in education. Frequently, virtual reality simulators are expensive and evidence for their efficacy is poor, particularly as a result of studies with poor methodology and few test participants. In medical simulated training......- and evaluation programmes it is always a question of transfer to the real clinical world. To illustrate this problem a study comparing the test performance of persons on a bowling simulator with their performance in a real bowling alley was conducted. MATERIAL and...

  9. Wagging ETOM's Long Tail: MOOCs, Hangouts on Air, and Formal and Informal Undergraduate Experiences with Climate Change Science and Clean Energy Solutions

    Science.gov (United States)

    Haines-Stiles, G.; Alley, R. B.; Akuginow, E.; McNeal, K.; Blockstein, D.

    2014-12-01

    Climate change can reasonably be described as a "wicked problem" meaning that it is complex, difficult and multi-faceted, although critical to equitable development and the sustainability of human civilization. But while the Wikipedia definition says such problems are "impossible" to solve, not even to try will lead to certain failure. "Earth: The Operators' Manual" (ETOM) was an NSF-funded informal science education project with 3 hour-long TV programs appearing on PBS in 2011 and 2012, along with live presentations by series host, Penn State's Richard Alley, and others at 5 major science centers. Uniquely among climate change programming, ETOM gave equal time to identifying solutions along with climate science, and made all its materials freely available via YouTube. Formal and informal science educators can register to download HD videos for classroom and outreach use, and signups have ranged from middle schools to 4-year colleges. Building on the success of the series and Alley's companion tradebook of the same name, Penn State working with Coursera invited Alley to develop a MOOC entitled "Energy, The Environment and Our Future" that similarly combined the essential science along with clean energy solutions. The course reached more than 30,000 students in the first semester of 2014. More recently the ETOM team has partnered with the National Council for Science and the Environment (NCSE) to develop "READ for the EARTH," an NSF EAGER project, offering campuses the opportunity to adopt Alley's book, the ETOM videos (including "How To Talk To An Ostrich"), NCSE's www.CAMELclimatechange.org web site and other resources for both formal and informal uses. Some campuses have used the book with honors classes, and some are exploring adapting ETOM as a first year reading experience for all freshman. Our presentation will share reactions to the MOOC, to the pilot phases of "READ for the EARTH" and present both qualitative and quantitative results. Some of the most

  10. A Man with No Name, or Too Many Names if You Think About it

    OpenAIRE

    Singh, Danvir

    2014-01-01

    Danvir. Jimmy. Danny V. Danny V & the Bumblebees. Danny Valentine. Double D. Deezus. D Weezy. DJ Takeover. Or ahh forget it. From lowly beginnings as a Window cleaner in Tin Pan Alley-era New York City singing "hello hello Tokio" to an "inn-keeper" in the countryside waxing rhapsodically about his famous battles while those around him push his buttons, this man with numerous names has had the opportunity to experience multiple worlds and the challenges that each of these bring up for the acto...

  11. Three-Terminal Superconducting Device Research

    Science.gov (United States)

    1992-09-18

    link. Overdrive will enhance O b ] -] speed, but this is at the expense of current gain.S 0.4 1 M %his work was partly supported by Office of Naval Re...for the case of quasiparticle injection. Extensive overdrive of the injection enhances speed, but at the expense of current gain. Sprik et al. concluded...Pennington, New Jersey, 1988. 5 26. Bozler, C.O., and Alley, G.D. IEEE Trans. Electron Dev. 26,619 (1980). 27- Malik, RiJ., AuCoin, T.R., Ross , R.L.. Board, K

  12. Kauno kino teatrai 1918–1940 m. : lokalizacija ir raida

    OpenAIRE

    Surblys, Alvydas

    2011-01-01

    Cinemas inherited from tsarist Kaunas and those established up to 1925 operated in buildings not specially-built but adapted as movie theaters. These included the "Palas" cinema, the first movie theater opened in interwar Lithuania in April 1919 at Laisvės Alley No. 58, now No. 82. The first building built specifically as a movie theater in interwar Kaunas was the cinema "Odeon," constructed at the end of 1925 as designed by J. Saleneko, and renamed "Gloria" after its 1935 reconstruction. The...

  13. The influence of elevated feed stalls on feeding behaviour of lactating dairy cows

    Directory of Open Access Journals (Sweden)

    Barbara Benz

    2014-10-01

    Full Text Available The performance level of high yielding cows can only be guaranteed by high quality forage and high feed intake. An about 15–20 cm elevated and 160 cm long feed stall with rubber flooring doesn’t only offer undisturbed meals but also a yielding and dry standing surface. In a pilot stable with 130 dairy cows (German Simmental the feeding alley was subsequently equipped with elevated feed stalls. The results show that animals frequented the feeding barn less often while the duration of single meals prolonged. The specific behavioural changes differed depending on milk yield and number of lactation.

  14. Lessons for climate policy from The Great Stink of London

    Science.gov (United States)

    Skuce, A.

    2012-12-01

    A rapidly growing population and the introduction of the flush toilet in nineteenth-century London caused a crisis with sewage pollution in the River Thames (Halliday, 1999). There were decades of delays in implementing solutions owing to: inadequate governance institutions; political inertia; difficulties with financing; opposition from vested interests; scientific uncertainties; and technological challenges. Effective counter-measures were started only once the problem arose, quite literally, under the noses of parliamentarians. There are parallels, some of them pointed out earlier by Alley et al (2010), between the sewage crisis in Victorian London and the current problem with climate change. Both involve the unsustainable use of a common resource (a river, the atmosphere) for the unconstrained disposal of human waste products. Alley (2011) estimated that the costs of providing clean water and sanitation are comparable to the expected costs of reducing greenhouse gas emissions. Despite the similarities, the climate change issue is actually much more difficult because of: a) the unequal and uncertain global distribution of cause and effect; b) its long, intergenerational time lines; c) the insufficiency of adequate institutions, conventions or the tools— political, moral or economic—for tackling the climate crisis. This analysis is consistent with the model proposed by Gardiner (2011) in his book A Perfect Moral Storm. The three "storms" he identifies, the global, intergenerational and theoretical storms, combine in a powerful synergy to create a challenge of unprecedented intractability, providing opportunities for what Gardiner calls moral corruption: the obscuring of the buck-passing and procrastination that characterizes climate policy today. In Victorian London, the crucial steps to solve the sewage crises were not taken until the stench from the River Thames during the hot summer of 1858 rendered the House of Commons uninhabitable. A greater stink of a

  15. Energy - dichotomies within the European Union? Outlook of the Turkish energy sector

    International Nuclear Information System (INIS)

    Dilli, B.

    2001-01-01

    Turkey, an alley of the West, and being in the process of rapid integration with the world economy, has started a comprehensive restructuring endeavor in the energy sector. In today's power markets where globalisation and competition plays an increasing role, supply security, economic growth and social targets must be harmonized effectively. Following topics can be considered as basic instruments in this context; restructuring of the power sector (privatization, demonopolization); removal of governmental intervention in the markets; creating a better regional/global cooperation for the deployment of new technologies; enhancing energy efficiency. (author)

  16. Cartographies of danger mapping hazards in America

    CERN Document Server

    Monmonier, Mark

    1997-01-01

    No place is perfectly safe, but some places are more dangerous than others. Whether we live on a floodplain or in ""Tornado Alley,"" near a nuclear facility or in a neighborhood poorly lit at night, we all co-exist uneasily with natural and man-made hazards. As Mark Monmonier shows in this entertaining and immensely informative book, maps can tell us a lot about where we can anticipate certain hazards, but they can also be dangerously misleading. California, for example, takes earthquakes seriously, with a comprehensive program of seismic mapping, whereas Washington has been comparatively lax

  17. Nayib Mahfuz y la “muerte de Dios”: una reflexión transcultural, abierta y emancipatoria

    Directory of Open Access Journals (Sweden)

    Encarnación Ruiz Callejón

    2012-05-01

    Full Text Available In this work I analyze the reflection of Mahfuz about God and his death in Children of Gebelawi/Children of the Alley, one of the most philosophical novels of Naguib Mahfouz. Mahfouz approaches the stories of Judaism, Christianity and Islam as parts of a cross-cultural and Utopian legacy. From the death of God he refers to the art of narrating the past as a cross-cultural therapy and a possible response to some effects of the nihilism.

  18. Measuring medium-induced gluons via jet grooming

    Science.gov (United States)

    Tywoniuk, Konrad; Mehtar-Tani, Yacine

    2017-11-01

    Jet substructure observables and applications of jet grooming techniques in heavy-ion collisions are still in its infancy and provide new alleys for studying medium modifications of perturbative degrees of freedom. We note that these measurements, given the right transverse momentum range, can be uniquely sensitive to rare medium-induced emissions inside of the jet cone. This corresponds to an infrared enhancement that would, for instance, affect the distribution of the groomed momentum-sharing variable zg measured using the SoftDrop procedure.

  19. Supply of wood-based bioenergy sources by means of agro-forestry systems; Bereitstellung von holzartigen Bioenergietraegern durch Agroforstsysteme

    Energy Technology Data Exchange (ETDEWEB)

    Boehm, Christian; Quinkenstein, Ansgar; Freese, Dirk [Brandenburgische Technische Univ. Cottbus (Germany). Lehrstuhl fuer Bodenschutz und Rekultivierung; Baerwolff, Manuela [Thueringer Landesanstalt fuer Landwirtschaft (Germany)

    2011-07-01

    Because of the initiated energy revolution and the associated increasing demand for woody biomass in Germany, the production of woody crops on agricultural sites is increasingly gaining in importance. In this context, agroforestry systems provide a promising option to cultivate simultaneously fast growing tree species and annual crops on the same field and to produce woody biomass and conventional products at the same time. Agroforestry systems in which hedgerows of fast growing tree species are established on agricultural sites in a regular pattern are called as alley cropping systems (ACS). These can be managed as low input systems and thus provide several ecological benefits. The cultivation of trees results in an enhanced humus accumulation in the soil and affects the quality of surface as well as percolating waters in a positive way. Additionally, ACS alter the microclimatic conditions at the site, from which the conventional crops cultivated in the alleys between the tree stripes benefit. However, from an economic point of view the production of woody crops with ACS is not generally preferable to conventional agriculture. The positive effects of ACS are most pronounced on marginal sites and, consequently, ACS are currently economically unfavorable compared to conventional agriculture on fertile soils. However, on unfertile, dry sites, such as can be found at a large scale in the Lusatian post-mining landscapes, ACS can be an ecologically and economically promising land-use alternative.

  20. Evaluation of the Allelopathic Influence of Selected Multi-purpose Tree Species on Maize (Zea mays under a Simulated Field Condition

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    Adeorike, V.

    2001-01-01

    Full Text Available Germination and growth response of maize (Zea mays that was periodically watered with 200 ml of leaf leachates of three selected multipurpose tree species (MPTs - Inga edulis, Anthonatha macrophylla and Dactyladenia barterii were evaluated under a simulated field condition to determine their allolepathic characteristics and suitability for alley cropping. There was a significant (P <0.05 difference in the germination percentage of the maize seeds among the MPTs studied. Maximum germination percentage (76.7 % of the seeds and seedling growth as indicated by radicle length, shoot length, fresh weight and plant height at taselling were obtained from seeds watered/treated with rainwater as the control treatment. Reduction in germination percentage (33 % was observed in Anthonatha macrophylla leachates while moderate germination percentage of 50 % was observed in Dactyladenia barterii leachate. Anthonatha macrophylla leachate inhibited both radicle and shoot lenght. Similarly Inga edulis leachate had inhibiting effects on radicle and shoot of germinating maize seeds. This resuit suggets that Inga edulis, Anthonatha macrophylla and Dactyladenia barterii produce allelochems which inhibit seed germination and growth of maize under the conditions of the experiment. Investigations on allelopathic characteristics of potential MPTs could be integrated in farm planning strategies in a tropical agroecology especially where alley cropping is contemplated.

  1. P1-18: The Effect of Background Music on Working Memory

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    Ding-Hao Liu

    2012-10-01

    Full Text Available Many studies do visual working memory research under sundry sound conditions (Alley & Greene, 2008 Current Psychology 27 277–289; Iwanaga & Ito, 2002 Perceptual Motor Skills 94 1251–1258; Pring & Walker, 1994 Current Psychology 13 165–171. In order to understand more about background music, we modified previous studies to examine how the performance of working memory is affected by four different music conditions. Participants were randomly assigned into two groups to listen to two different pop songs to see if they have the similar effect on the performance of working memory. They were required to do six trials of digit span tasks under each music condition (silence, classical music, non-vocal music, vocal music. After being shown ten digits, each for 800 ms, participants were asked to recall and write down the digits in the correct order within 20 s. The results showed that there was no significant difference between two pop songs. Therefore, data were pooled for further analysis and indicated that there are significant differences and correlations in working memory among the four music conditions. The finding that the effect of non-vocal music affects working memory is greater in this study than in that of western films (Alley & Greene, 2008; Pring & Walker, 1994, which is consistent with the previous study in Japan (Iwanaga & Ito, 2002. The application of this study will be discussed in detail.

  2. Cannabinoid receptors activation and glucocorticoid receptors deactivation in the amygdala prevent the stress-induced enhancement of a negative learning experience.

    Science.gov (United States)

    Ramot, Assaf; Akirav, Irit

    2012-05-01

    The enhancement of emotional memory is clearly important as emotional stimuli are generally more significant than neutral stimuli for surviving and reproduction purposes. Yet, the enhancement of a negative emotional memory following exposure to stress may result in dysfunctional or intrusive memory that underlies several psychiatric disorders. Here we examined the effects of stress exposure on a negative emotional learning experience as measured by a decrease in the magnitude of the expected quantity of reinforcements in an alley maze. In contrast to other fear-related negative experiences, reward reduction is more associated with frustration and is assessed by measuring the latency to run the length of the alley to consume the reduced quantity of reward. We also examined whether the cannabinoid receptors agonist WIN55,212-2 (5 μg/side) and the glucocorticoid receptors (GRs) antagonist RU-486 (10 ng/side) administered into the rat basolateral amygdala (BLA) could prevent the stress-induced enhancement. We found that intra-BLA RU-486 or WIN55,212 before stress exposure prevented the stress-induced enhancement of memory consolidation for reduction in reward magnitude. These findings suggest that cannabinoid receptors and GRs in the BLA are important modulators of stress-induced enhancement of emotional memory. Copyright © 2012 Elsevier Inc. All rights reserved.

  3. Arthropod diversity (Arthropoda on abandoned apple trees

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    Pavla Šťastná

    2013-01-01

    Full Text Available In 2010 and 2011, the occurrence of arthropods on apple trees without management was monitored near the village of Velké Bílovice, South Moravia, in two selected localities (an abandoned apple tree orchard and a road apple tree alley. Arthropods in tree tops were killed using deltamehtrin applied with a fogger (Puls Fog. Each collection always contained the material from 5 trees in each site. In 2010, three collections were performed (28/4, 20/5, and 9/7, two in 2011 (11/5 and 23/6. Representatives of eleven orders were captured. Of all the orders trapped, Coleoptera was represented most frequently, the Hymenoptera and Diptera followed. In the alley, individuals of the Coleoptera (34% were caught most frequently, the Hymenoptera (19.6% and Hemiptera (17.4% followed. In the orchard, the Coleoptera (41.4% was represented most frequently, followed by the Hymenoptera (21.9% and Diptera (15%. In both the environments, species with negative economic impact were recorded (e.g. Anthonomus pyri, Tatianaerhynchites aequatus, Cydia pomonella, Rhynchites bacchus. However, a greater number of pest antagonists were also found (Scambus pomorum, Coccinella septempunctata, Episyrphus balteatus, Pentatoma rufipes, Orius spp.. Some species were important in faunistic terms, as some critically endangered species were recorded (e.g. Dipoena erythropus, Cryptocephalus schaefferi, and the Plectochorus iwatensis species was recorded for the first time in the Czech Republic.

  4. Pre-crastination: hastening subgoal completion at the expense of extra physical effort.

    Science.gov (United States)

    Rosenbaum, David A; Gong, Lanyun; Potts, Cory Adam

    2014-07-01

    In this article, we describe a phenomenon we discovered while conducting experiments on walking and reaching. We asked university students to pick up either of two buckets, one to the left of an alley and one to the right, and to carry the selected bucket to the alley's end. In most trials, one of the buckets was closer to the end point. We emphasized choosing the easier task, expecting participants to prefer the bucket that would be carried a shorter distance. Contrary to our expectation, participants chose the bucket that was closer to the start position, carrying it farther than the other bucket. On the basis of results from nine experiments and participants' reports, we concluded that this seemingly irrational choice reflected a tendency to pre-crastinate, a term we introduce to refer to the hastening of subgoal completion, even at the expense of extra physical effort. Other tasks also reveal this preference, which we ascribe to the desire to reduce working memory loads. © The Author(s) 2014.

  5. Impact of Pyrotechnics over the Architectonic Heritage

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    Angel T. Lloret

    2017-01-01

    Full Text Available The use of pyrotechnics near to the historical heritage such as walls, facades, church, or fortifications of a city is nowadays a topic of discussion. There is not a clear legislation about the use of pyrotechnics near to these buildings and how they can be affected by the expansive wave generated by the use of harquebusiers, fireworks, and cannons during the simulation of a battle. For this reason, this paper presents some practical tests that measure the vibroacoustic effect when these types of pyrotechnics are used near to the architectonical heritage. In order to collect these data, we have used several sound level meters and accelerometers placed on two different scenarios. The first one was placed near to the beach and the other one was placed in a building of a narrow alley. The tests were carried out during the festival of Moors and Christians of Villajoyosa (Spain which is a famous festival. Along these tests, we reproduce the worse cases that may affect the building, using harquebusiers shots, fireworks, and cannons shots. Results show that the house placed near to the beach does not suffer important vibroacoustic impacts. However, the old building placed in the alley is very affected.

  6. Narrating the marginalized Oriental female: silencing the colonized subaltern

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    Saddik Gohar

    2015-12-01

    Full Text Available A scrutinized reading of the early fiction of Naguib Mahfouz, particularly his masterpiece Midaq Alley, reveals that the author's outward tendency to offer what seems to be a neutral presentation of Egyptian-Arab women is thwarted by a hegemonic master narrative originated in local patriarchal traditions. It either marginalizes the female subaltern downsizing her role in the fictional canvas or conflates her with a status of gender inferiority by assigning her a role which conforms to her image in the patriarchal taxonomy of Oriental women. In other words, the authorial attempt to create an objective narrative of the male/ female controversy in Midaq Alley is totally undermined by a plethora of male voices dominating the fictional text and deploying patriarchal discourses about the depravity of the female race and the invalidity of women's struggle for independence. In this context, the paper argues that due to a hegemonic narrative mechanism, Mahfouz's representation of the female protagonist conforms to domestic patriarchal visions of femininity while on the surface it masks itself as a progressive image of womanhood.

  7. The impact of excessive cutting on tree condition

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    Henryk Kociel

    2018-04-01

    Full Text Available The research was carried out to verify the impact of incorrect care practices on the value of trees. The research was carried out on a fragment of a lime-tree alley, located on a local road connecting Wólka Świątkowa and Krynka in the Lublin province. One side of the alley has been subjected to abnormal cuts, exceeding 50% of the volume of the crown, while the other remains intact. For this purpose, an analysis of the impact of the applied treatments on the condition of trees on the Rollof scale, analysis of life prognoses using the SULE method and the analysis of tree values and the assessment of tree loss as a result of cuts ensuing from the use of incorrect treatments were conducted. The analyses confirmed that the use of incorrect cuts contributed to the decline in the value of trees. The loss is so large that 1/3 of damaged trees have no chance for long and safe; moreover, these trees have lost 68% of their value.

  8. Spatial Settlement Pattern of Settlements in Laweyan as Supportive Batik Production Activities

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    Rinaldi Mirsa

    2016-08-01

    Full Text Available Laweyan, a traditional village, has existed before 1500 AD. As the trade center yarn (clothing material of Pajang Kingdom, its presence meant after Kyai Ageng Anis (descendant of Brawijaya V and grandson Raden Ngabehi Lor Ing Pasar who later became the first king of Mataram settled in Laweyan in 1546. Laweyan entrepreneurship in the communities ushered in the heyday of batik economic in century. Successfulness in the field of economy turned an impact on development in various fields, helped shape the pattern of space and environment. Spatial pattern and traditional settlements are usually much characterized by the mass of buildings that have appeared in the form of walls covered choke and surrounded by alley or narrow street, as seen in Laweyan with the existence of high ‘beteng’ which raises many narrow alleys and a Laweyan hallmark not only as a security but also one of the merchants attempt to maintain the privacy and obtain local authority in the community.

  9. Environmental and agricultural benefits of a management system designed for sandy loam soils of the humid tropics Benefícios ambientais e agronômicos de um agrossistema definido para solos de textura franco arenosa do trópico úmido

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    Alana das Chagas Ferreira Aguiar

    2009-10-01

    Full Text Available A sustainable management of soils with low natural fertility on family farms in the humid tropics is a great challenge and overcoming it would be an enormous benefit for the environment and the farmers. The objective of this study was to assess the environmental and agronomic benefits of alley cropping, based on the evaluation of C sequestration, soil quality indicators, and corn yields. Combinations of four legumes were used in alley cropping systems in the following treatments: Clitoria fairchildiana + Cajanus cajan; Acacia mangium + Cajanus cajan; Leucaena leucocephala + Cajanus cajan; Clitoria fairchildiana + Leucaena leucocephala; Leucaena leucocephala + Acacia mangium and a control. Corn was used as a cash crop. The C content was determined in the different compartments of soil organic matter, CEC, available P, base saturation, percentage of water saturation, the period of the root hospitality factor below the critical level and corn yield. It was concluded that alley cropping could substitute the slash and burn system in the humid tropics. The main environmental benefit of alley cropping is the maintenance of a dynamic equilibrium between C input and output that could sustain up to 10 Mg ha-1 of C in the litter layer, decreasing atmospheric CO2 levels. Alley cropping is also beneficial from the agricultural point of view, because it increases base saturation and decreases physical resistance to root penetration in the soil layer 0 - 10 cm, which ensures the increase and sustainability of corn yield.O manejo sustentável dos solos de baixa fertilidade natural na agricultura familiar do trópico tem sido um grande desafio, que, se vencido, resultará em vantagens para o ambiente e para os agricultores. Este trabalho foi realizado com o objetivo de avaliar os benefícios ambiental e agronômico de um cultivo em aleias, por meio da determinação do C sequestrado, dos indicadores da qualidade do solo e da produtividade da cultura do milho

  10. Applying the Science of Science Communication to Climate Change and Clean Energy: Lessons Learned from the NSF- and PBS-supported "Earth: The Operators' Manual"

    Science.gov (United States)

    Haines-Stiles, G.; Akuginow, E.; Sanford, C.

    2014-12-01

    Yale legal scholar and professor of psychology Dan Kahan has criticized the climate change science community for not applying what's known about effective communications strategies to topics with potentially controversial content. "Earth: The Operators' Manual," funded by NSF's Informal Science Education program and appearing on PBS was hosted by Penn State geoscientist Richard Alley. From the initial proposal forward into airing on public television in 2011 and 2012, ETOM aimed to be authoritative and apolitical while still being engaging to general audiences. Based on social scientific insights from project Advisor, Suzanne Moser, and others, ETOM aimed to avoid "climate porn" scare tactics and over-used footage, and to enlist a diverse group of "messengers" in addition to Alley. An important design criterion was to give equal time to clean energy solutions while pulling no punches as to the consensus findings of leading climate scientists. With the ETOM project now completed and final reports submitted to NSF, what results can be shared to inform future efforts? And how did ETOM compare in audience impact with other major media efforts such as Al Gore's "An Inconvenient Truth" or Showtime's more recent "Years of Living Dangerously"? Results reported draw on the external evaluation by Rockman Et Al, and include both quantitative and qualitative data. Key findings are the importance of including Texan ranchers enthusiastic about wind power alongside Navy Admirals adamant that climate change is human-caused and Marines implementing solar energy to reduce casualties incurred while transporting fossil fuels. In-person presentations by Alley and others at science centers served as de facto focus groups for scripting the TV programs, along with actual focus groups convened by Rockman. The 3rd program, ENERGY QUEST USA, documented 5 quite different communities, from Alaska to Forth Worth, Baltimore, Portland and Kansas, all using competition, local values, and economic

  11. Differences in Extinction of an Appetitive Instrumental Response in Female Inbred Roman High- (RHA-I and Low- (RLA-I Avoidance Rats

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    Carmen Torres

    2009-01-01

    Full Text Available An experiment was conducted with the goal of exploring strain differences between female inbred Roman High and Low Avoidance rats (RHA-I, and RLA-I, respectively on acquisition and extinction of a food-rewarded running response in a straight alley. Acquisition proceeded faster in the less emotional RHA-I and Wistar rats (used as controls than in the more emotional RLA-I rats. However, extinction proceeded slower in RHA-I rats than in RLA-I and Wistar rats. This strain-based asymmetry on instrumental performance between acquisition and extinction is discussed in terms of strain differences in locomotor activity, associative flexibility and emotional reactivity.

  12. The Spatial Scale and Spatial Configuration of Residential Settlement: Measuring Segregation in the Postbellum South

    Science.gov (United States)

    Logan, John R.; Martinez, Matthew

    2018-01-01

    Studies of residential segregation typically focus on its degree without questioning its scale and configuration. We study Southern cities in 1880 to emphasize the salience of these spatial dimensions. Distance-based and sequence indices can reflect spatial patterns but with some limitations, while geocoded 100% population data make possible more informative measures. One improvement is flexibility in spatial scale, ranging from adjacent buildings to whole districts of the city. Another is the ability to map patterns in fine detail. In Southern cities we find qualitatively distinct configurations that include not only black “neighborhoods” as usually imagined, but also backyard housing, alley housing, and side streets that were predominantly black. These configurations represent the sort of symbolic boundaries recognized by urban ethnographers. By mapping residential configurations and interpreting them in light of historical accounts, our intention is to capture meanings that are too often missed by quantitative studies of segregation.

  13. Animal hygiene assessment of microclimate in semi open free-stall barns for dairy cows

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    D. Dimov

    2017-03-01

    Full Text Available Abstract. The study was conducted in three semi open free-stall barns (B1, B2, and B3 for dairy cows with capacities for 120, 120 and 500 cows, respectively, from three different dairy farms (F-1, F-2 and F-3, situated in Central Southern Bulgaria. The investigated farms had the same production system – loose housing in semi open free-stall dairy barn. For each of the farms the main microclimatic parameters – air temperature, relative humidity and speed of airflow were recorded twice a month at 10.00 h 12.00 h, 14.00 h, 16.00 h and 18.00 h of the day inside the barns in three main technological zones - above the stalls, above manure and feed alleys and outside the buildings. It was found that: a Microclimatic parameters (air temperature, air relative humidity and speed of airflow in technological zones (above the stalls, the manure and feed alleys of three semi open free-stall dairy barns meet the animal hygienic requirements for all seasons according to Regulation No. 44 (2006. Exceptions are some values of relative humidity in B1 and B2 in the spring, and in B1 in winter and summer, which are lower than the minimum humidity (50% according to the standard. b The investigated barns are characterized with poor insulation and do not provide enough isolation from the external ambient temperatures. With the exception of winter, the temperature of the air inside the buildings was lower than that outside, with minor differences for all seasons. The fans in the barns have no effect on the inside air temperature, especially in summer. There was a risk of higher temperatures mainly during the summer period. c There is no significant difference between the average temperatures, air humidity and speed of airflow in all technological zones of the investigated barns. d The largest and statistically significant is the difference between the relative air humidity outside and inside the building in Farm 3, followed by buildings in Farm 1 and 2, where the

  14. Plant community and white-tailed deer nutritional carrying capacity response to intercropping switchgrass in loblolly pine plantations

    Science.gov (United States)

    Greene, Ethan Jacob

    Switchgrass (Panicum virgatum L.) is a cellulosic feedstock for alternative energy production that could grow well between planted pines (Pinus spp.). Southeastern planted pine occupies 15.8 million hectares and thus, switchgrass intercropping could affect biodiversity if broadly implemented. Therefore, I evaluated effects of intercropping switchgrass in loblolly pine (P. taeda L.) plantations on plant community diversity, plant biomass production, and white-tailed deer (Odocoileus virginianus Zimmerman) nutritional carrying capacity. In a randomized complete block design, I assigned three treatments (switchgrass intercropped, switchgrass monoculture, and a "control" of traditional pine management) to 4 replicates of 10-ha experimental units in Kemper County, Mississippi during 2014-2015. I detected 246 different plant species. Switchgrass intercropping reduced plant species richness and diversity but maintained evenness. I observed reduced forb and high-use deer forage biomass but only in intercropped alleys (interbeds). Soil micronutrient interactions affected forage protein of deer plants. White-tailed deer nutritional carrying capacity remained unaffected.

  15. Helical vortices: linear stability analysis and nonlinear dynamics

    Science.gov (United States)

    Selçuk, C.; Delbende, I.; Rossi, M.

    2018-02-01

    We numerically investigate, within the context of helical symmetry, the dynamics of a regular array of two or three helical vortices with or without a straight central hub vortex. The Navier–Stokes equations are linearised to study the instabilities of such basic states. For vortices with low pitches, an unstable mode is extracted which corresponds to a displacement mode and growth rates are found to compare well with results valid for an infinite row of point vortices or an infinite alley of vortex rings. For larger pitches, the system is stable with respect to helically symmetric perturbations. In the nonlinear regime, we follow the time-evolution of the above basic states when initially perturbed by the dominant instability mode. For two vortices, sequences of overtaking events, leapfrogging and eventually merging are observed. The transition between such behaviours occurs at a critical ratio involving the core size and the vortex-separation distance. Cases with three helical vortices are also presented.

  16. Psychiatry today

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    Fabrizio Gambini

    2015-12-01

    Full Text Available The conception of psychiatry in neuroscience is a blind alley that leads to the loss of all that is human beyond diagnostic calcification and the designation of behaviour. On the other hand, psychoanalysis has failed in its potential for giving new life to psychiatry, and has created a false dichotomy between scientific blindness and fictional speculation. The article offers no third way but rather offers an interpretation of Freud and Lacan that entails a solid conception of language, and one that respects and accounts for the variables in subjective expressions through which all human expressiveness is necessarily made manifest. This means it is essential for psychoanalysis to interact with philosophy and, in particular, with so‐called negative philosophies.

  17. Rain-related Fatal Crashes in Texas

    Science.gov (United States)

    Sharif, Hatim; Jackson, Terrance

    2013-04-01

    Weather has a direct impact on traffic safety. This study focuses on fatal crashes in the presence of rain. We reviewed information related to the events that lead to rain- related crashes in the Texas since 1982. Analysis of the data reveals that 12.4% of crashes in Texas were rain-related. Most rain-related crashes are located in Texas "Flash Flood Alley" which includes major urban centers. Fatal crash data and GIS are used to explore and identify the spatio-temporal distribution of the crashes. Spatial statistical techniques are used to identify significant patterns of rain-related fatal crashes. Logistic and nonlinear regression is used to identify and rank all environmental and non-environmental factors that contribute to fatal crashes. Focus will be on factors that amplify the rain effect. Identifying the variables contributing to these fatal crash types is necessary for the implementation of effective countermeasures for road weather safety purposes.

  18. The Norton history of astronomy and cosmology.

    Science.gov (United States)

    North, J.

    The author shows how the seasonal motions of sun, moon, and stars triggered the first efforts at systematic astronomy, from the megalithic observatory at Stonehenge to the achievements of astronomers in ancient Egypt, Mesopotamia, Greece and Rome, India, China, and Central and South America. He recounts how, despite false starts, blind alleys, and missed connections, astronomical knowledge slowly accumulated until the synthesis of Islamic and medieval Christian science set the stage for the revolution in understanding brought about by Copernicus, Kepler, Galileo, and Newton. He tells how the insights of Einstein and others transformed the Newtonian universe into one of relativity, quantum particles, black holes, and the big bang. The result is a history of humanity's quest to understand how the universe works.

  19. B.I.M. and cultural heritage: multi-scalar and multi-dimensional analysis and representation of an historical settlement.

    Directory of Open Access Journals (Sweden)

    Roberta Spallone

    2016-06-01

    Full Text Available Among its many and varied potential, B.I.M. includesthose of diachronic and multi-scalar managementof digital models. These potentialitieshave been tested in an innovative way on thecase study of a medieval settlement of particularmorphology, for its comb-shaped layout interspersedby narrow alleys, placed on a system ofthree ridges, in Asti territory. This interdisciplinaryresearch, has involved analyses at the urban,micro-urban and architectural levels. The methodologyuses tools whose applications to historicalbuildings is currently object of study by scholarsin the field of H.B.I.M . Compared to existingstudies, however, the present approach usessome functionality for the control of the timedimension not yet properly explored, interlacingwith the archaeology of the elevations and thestratigraphic Harris Diagram (Matrix, in order tofacilitate the analysis.

  20. Effect of runway training on rat brain tyrosine hydroxylase: differential effect of continuous and partial reinforcement schedules.

    Science.gov (United States)

    Boarder, M R; Feldon, J; Gray, J A; Fillenz, M

    1979-12-01

    Previous experiments have implicated ascending noradrenergic systems in the development of the behavioural responses to different patterns of reward. In this report food deprived male Sprague--Dawley rats were trained to run a straight alley for good reward on a continuous reinforcement (CRF) or a partial reinforcement (PRF) schedule. Tyrosine hydroxylase measured in a partially solubilized preparation from hippocampus and hypothalamus at the end of acquisition was not different from controls, indicating that enzyme induction does not occur during either training schedules. However, hippocampal synaptosomal tyrosine hydroxylation rates from the CRF group was significantly higher than from either the PRF group or the handled controls. This indicates that at the end of the acquisition schedule the noradrenergic projection to hippocampus was more active in the CRF group than with the PRF group or the handled control.

  1. Dreaming in the desert

    Science.gov (United States)

    2009-11-01

    Saudi Arabia's bold new co-educational research university deserves to succeed Imagine you want to build, from scratch, a brand new, world-beating university dedicated to science and technology in less than two years. What would you need for the job? Well, a big pot of cash would be essential - an endowment of 10bn, let's say. You would need money for lab equipment - about 1.5bn over five years will do nicely - and a visionary leader who can attract talented staff from around the world. They would have to be tempted by fat salaries, given houses to live in and offered goodies like, say, a yachting marina, private golf course and bowling alley. Throw in free satellite TV in every house, install WiFi Internet access across the campus and, oh, invite 3000 people to a spectacular opening ceremony so the world knows that you mean business.

  2. Waste Transfer Stations

    DEFF Research Database (Denmark)

    Christensen, Thomas Højlund

    2011-01-01

    tion and transport is usually the most costly part of any waste management system; and when waste is transported over a considerable distance or for a long time, transferring the waste from the collection vehicles to more efficient transportation may be economically beneficial. This involves...... a transfer station where the transfer takes place. These stations may also be accessible by private people, offering flexibility to the waste system, including facilities for bulky waste, household hazardous waste and recyclables. Waste transfer may also take place on the collection route from small...... satellite collection vehicles to large compacting vehicles that cannot effectively travel small streets and alleys within the inner city or in residential communities with narrow roads. However, mobile transfer is not dealt with in this chapter, which focuses on stationary transfer stations. This chapter...

  3. Forage mass and the nutritive value of pastures mixed with forage peanut and red clover

    Directory of Open Access Journals (Sweden)

    Ricardo Lima de Azevedo Junior

    2012-04-01

    Full Text Available The objective of this research was to estimate three pasture-based systems mixed with elephantgrass + spontaneous growth species, annual ryegrass, for pasture-based system 1; elephantgrass + spontaneous growth species + forage peanut, for pasture-based system 2; and elephantgrass + spontaneous growth species + annual ryegrass + red clover, for pasture-based system 3. Elephantgrass was planted in rows 4 m apart from each other. During the cool-season, annual ryegrass was sown in the alleys between the rows of elephantgrass; forage peanut and red clover were sown in the alleys between the elephantgrass according to the respective treatment. The experimental design was totally randomized in the three treatments (pasture-based systems, two replicates (paddocks in completely split-plot time (grazing cycles. Holstein cows receiving 5.5 kg-daily complementary concentrate feed were used in the evaluation. Pre-grazing forage mass, botanical composition and stocking rate were evaluated. Samples of simulated grazing were collected to analyze organic matter (OM, neutral detergent fiber (NDF, crude protein (CP and organic matter in situ digestibility (OMISD. Nine grazing cycles were performed during the experimental period (341 days. The average dry matter values for pre-grazing and stocking rate were 3.34; 3.46; 3.79 t/ha, and 3.28; 3.34; 3.60 AU/ha for each respective pasture-based system. Similar results were observed between the pasture-based systems for OM, NDF, CP and OMISD. Considering forage mass, stocking rate and nutritive value, the pasture-based system intercropped with forage legumes presented better performance.

  4. Soil Infiltration Characteristics in Agroforestry Systems and Their Relationships with the Temporal Distribution of Rainfall on the Loess Plateau in China.

    Directory of Open Access Journals (Sweden)

    Lai Wang

    Full Text Available Many previous studies have shown that land use patterns are the main factors influencing soil infiltration. Thus, increasing soil infiltration and reducing runoff are crucial for soil and water conservation, especially in semi-arid environments. To explore the effects of agroforestry systems on soil infiltration and associated properties in a semi-arid area of the Loess Plateau in China, we compared three plant systems: a walnut (Juglans regia monoculture system (JRMS, a wheat (Triticum aestivum monoculture system (TAMS, and a walnut-wheat alley cropping system (JTACS over a period of 11 years. Our results showed that the JTACS facilitated infiltration, and its infiltration rate temporal distribution showed a stronger relationship coupled with the rainfall temporal distribution compared with the two monoculture systems during the growing season. However, the effect of JTACS on the infiltration capacity was only significant in shallow soil layer, i.e., the 0-40 cm soil depth. Within JTACS, the speed of the wetting front's downward movement was significantly faster than that in the two monoculture systems when the amount of rainfall and its intensity were higher. The soil infiltration rate was improved, and the two peaks of soil infiltration rate temporal distribution and the rainfall temporal distribution coupled in rainy season in the alley cropping system, which has an important significance in soil and water conservation. The results of this empirical study provide new insights into the sustainability of agroforestry, which may help farmers select rational planting patterns in this region, as well as other regions with similar climatic and environmental characteristics throughout the world.

  5. Flash flood swift water rescues, Texas, 2005–2014

    Directory of Open Access Journals (Sweden)

    Vaidehi Shah

    2017-01-01

    Full Text Available Although rainfall patterns are complex and difficult to predict, climate models suggest precipitation in Texas will occur less frequently and with greater intensity in the future. In combination with rapid population growth and development, extreme rainfall events are likely to lead to flash floods and necessitate swift water rescues. Swift water rescues are used to retrieve person(s from swift water flowing at a rate of 1 knot or greater. Data were obtained from the Texas Fire Marshal’s Office and analyzed to describe spatial and temporal characteristics of rescues. Between 2005 and 2014, 3256 swift water rescues were reported from 136 of 254 (54% counties. Over half (54.6%, n = 1777 occurred in counties known as Flash Flood Alley, which includes Texas’ largest and fastest growing cities. Less than 1.0% (n = 18 were reported from 49 counties designated as completely rural, or with an urban population less than 2500. Increases in swift water rescues were seen between March and September and during major weather events such as tropical storms. Because county-level data was utilized and demographic data was missing in all but 2% (n = 47 of the incidents, our ability to identify populations at risk or target interventions in the future using this data is limited. Despite the frequency of flash flood events and swift water rescues in Texas, knowledge gaps persist that should be addressed through the conduct of interdisciplinary research by epidemiologists and climatologists and by disseminating evidence-based health education and safety programs, particularly in rapidly growing counties that make up Texas’ Flash Flood Alley.

  6. Effects of runway shift and stay rules on rats' serial pattern learning in the T-maze.

    Science.gov (United States)

    Cohen, Jerome; Westlake, Kimberly; Szelest, Izabela

    2004-11-01

    Rats received three-trial series on a T-maze consisting of extended visually distinct left-black and right-striped side runways. During the first phase of training, when allowed to select baited runways within these series, they predominantly alternated their choices. During the second phase, rats received forced-choice serial pattern training of series consisting of two rewarded (R) trials and one nonrewarded (N) trial in two fixed orders, RRN and RNR. In Experiment 1, the rats in the runway shift rule group always received the second R trial when forced down a runway opposite that on the preceding trial in the series and the N trial when forced down the same runway. The rats in the runway stay rule group always received the second R trial when forced down the same runway and the N trial when forced down the opposite runway. In Experiment 2, each rat was conditionally trained with both runway outcome rules as determined by the central alley lighting and the type of food in the side alleys. The rats took longer to reduce their running speed on the N trial within each sequence under the runway stay rule than under the runway shift rule. They also took longer to acquire serial pattern responding for the RNR than for the RRN series only under the runway stay rule condition. When subsequently reexposed to series of free-choice trials on the final phase, rats maintained spontaneous alternating choice patterns under the runway shift rule conditions but either seldom alternated their choices (Experiment 1) or greatly reduced choice alternations (Experiment 2) under the runway stay rule condition. We discussed these effects in terms of rats' natural foraging strategies and as a factor that interacts with other within- and between-series variables that affect serial pattern behavior.

  7. Rift-related volcanism and karst geohydrology of the southern Ozark Dome

    Science.gov (United States)

    Harrison, Richard W.; Weary, David J.; Orndorff, Randall C.; Repetski, John E.; Pierce, Herbert A.; Lowell, Gary R.; Evans, Kevin R.; Aber, James S.

    2010-01-01

    This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi southwest of the St. Francois Mountains and form the core of the Ozark dome. On day 1, participants will examine and explore major karst features developed in Paleozoic carbonate strata on the Current River; this will include Devil's Well and Round Spring Cavern as well as Montauk, Round, Alley, and Big Springs. The average discharge of the latter is 276 × 106 gpd and is rated in the top 20 springs in the world. Another, Alley Spring, is equally spectacular with an average discharge of 81 × 106 gpd. Both are major contributors to the Current and Eleven Point River drainage system which includes about 50 Mesoproterozoic volcanic knobs and two granite outcrops. These knobs are mainly caldera-erupted ignimbrites with a total thickness of 7–8 km. They are overlain by post-collapse lavas and intruded by domes dated at 1470 Ma. Volcaniclastic sediment and air-fall lapilli tuff are widely distributed along this synvolcanic unconformity. On day 2, the group will examine the most important volcanic features and the southernmost granite exposure in Missouri. The trip concludes with a discussion of the Missouri Gravity Low, the Eminence caldera, and the volcanic history of southern Missouri as well as a discussion of geologic controls on regional groundwater flow through this part of the Ozark aquifer.

  8. Behavioural thermoregulation and bioenergetics of riverine smallmouth bass associated with ambient cold-period thermal refuge

    Science.gov (United States)

    Westhoff, Jacob T.; Paukert, Craig P.; Ettinger-Dietzel, Sarah; Dodd, H.R.; Siepker, Michael

    2016-01-01

    Smallmouth bass in thermally heterogeneous streams may behaviourally thermoregulate during the cold period (i.e., groundwater temperature greater than river water temperature) by inhabiting warm areas in the stream that result from high groundwater influence or springs. Our objectives were to determine movement of smallmouth bass (Micropterus dolomieu) that use thermal refuge and project differences in growth and consumption among smallmouth bass exhibiting different thermal-use patterns. We implanted radio transmitters in 29 smallmouth bass captured in Alley Spring on the Jacks Fork River, Missouri, USA, during the winter of 2012. Additionally, temperature archival tags were implanted in a subset of nine fish. Fish were tracked using radio telemetry monthly from January 2012 through January of 2013. The greatest upstream movement was 42.5 km, and the greatest downstream movement was 22.2 km. Most radio tagged fish (69%) departed Alley Spring when daily maximum river water temperature first exceeded that of the spring (14 °C) and during increased river discharge. Bioenergetic modelling predicted that a 350 g migrating smallmouth bass that used cold-period thermal refuge would grow 16% slower at the same consumption level as a fish that did not seek thermal refuge. Contrary to the bioenergetics models, extrapolation of growth scope results suggested migrating fish grow 29% more than fish using areas of stream with little groundwater influence. Our results contradict previous findings that smallmouth bass are relatively sedentary, provide information about potential cues for migratory behaviour, and give insight to managers regarding use and growth of smallmouth bass in thermally heterogeneous river systems.

  9. Boston Architectural College Urban Sustainability Initiative

    Energy Technology Data Exchange (ETDEWEB)

    Byers, Arthur C.

    2013-07-31

    The Boston Architectural College's Urban Sustainability initiative is a demonstration project as defined by the National Energy Technology Laboratory. BAC's proposed project with the U.S. Department of Energy - NETL, is a large part of that overall initiative. The BAC's Urban Sustainability Initiative is a multi-part project with several important goals and objectives that will have a significant impact on the surrounding neighborhood including: energy conservation, reduction of storm water runoff, generation of power through alternative energy sources, elimination/reduction of BAC carbon footprint, and to create a vehicle for ongoing public outreach and education. Education and outreach opportunities will serve to add to the already comprehensive Sustainability Design courses offered at BAC relative to energy savings, performance and conservation in building design. At the finish of these essential capital projects there will be technical materials created for the education of the design, sustainability, engineering, community development and historic preservation communities, to inform a new generation of environmentally-minded designers and practitioners, the city of Boston and the general public. The purpose of the initiative, through our green renovations program, is to develop our green alley projects and energy saving renovations to the BAC physical plant, to serve as a working model for energy efficient design in enclosed 19th century and 20th century urban sites and as an educational laboratory for teaching ecological and sustainable technologies to students and the public while creating jobs. The scope of our project as it relates to the BAC and the U.S. Department of Energy- NETL combined efforts includes: Task I of the project is Phase II (Green Alley). Task I encompasses various renovation activities that will demonstrate the effectiveness of permeable paving and ground water recharge systems. It will aid in the reduction of storm water

  10. Associations of dairy cow behavior, barn hygiene, cow hygiene, and risk of elevated somatic cell count.

    Science.gov (United States)

    Devries, T J; Aarnoudse, M G; Barkema, H W; Leslie, K E; von Keyserlingk, M A G

    2012-10-01

    Poor dairy cow hygiene has been consistently associated with elevated somatic cell count (SCC) and the risk of subclinical mastitis. The objective of this study was to determine the associations between dairy cow standing and lying behavior, barn hygiene, cow hygiene, and the risk of experiencing elevated SCC. Lactating Holstein dairy cows (n=69; 86 ± 51 DIM; parity: 2.0 ± 1.2; means ± SD), kept in 1 of 2 groups, were monitored over a 4-mo period. Each group contained 61 ± 1 (mean ± SD) cows over the study period; complete data were obtained from 37 and 32 animals within each respective group. Cows were housed in a sand-bedded, freestall barn with 2 symmetrical pens, each with a free cow traffic automatic milking system. To vary barn hygiene, in 4 consecutive 28-d periods, alley manure scrapers in each of the 2 pens were randomly assigned to frequencies of operation of 3, 6, 12, and 24 times per day. During the last 7 d of each period, cow hygiene (upper leg/flank, lower legs, and udder; scale of 1 = very clean to 4 = very dirty) and stall hygiene (number of 0.15×0.15-m squares contaminated with manure in a 1.20×1.65-m grid) were recorded. Standing and lying behavior of the cows were collected during those days using data loggers. Individual-cow SCC was recorded at the beginning and end of each 28-d period. Elevated SCC was used as an indicator of subclinical mastitis; incidence of elevated SCC was defined as having a SCC >200,000 cells/mL at the end of each 28-d period, when SCC was cows having poorer hygiene. Poor udder hygiene was associated with poor stall hygiene. Longer lying duration was associated with poor hygiene of the upper legs/flank and udder. Greater premilking standing duration was associated with poor udder hygiene and decreased frequency of lying bouts was associated with poor hygiene of the lower legs. Higher milk yield was associated with poor hygiene of the udder and lower legs; multiparous cows had poorer hygiene of the upper legs

  11. Why 'Science + Solutions' Is An Effective & Essential Climate Communications Strategy (Invited)

    Science.gov (United States)

    Haines-Stiles, G.; Alley, R. B.; Akuginow, E.

    2013-12-01

    Success in the Second World War was enabled in large part through advances in science and technology such as radar and the Manhattan Project, and the subsequent growth of the US economy endowed scientists with unrivaled influence in society and policy-making. But climate science has not been immune to criticism, and attacks on what 97% of expert climate scientists regard as well-established have continued. However, as shown in Leiserowitz et al's series of SIX AMERICAS studies, the vast majority of citizens are neither firmly committed against accepting the reality of human-caused climate change, nor 100% certain of the cause. The question, then, is how to reach 'the movable middle.' Richard Alley's 'Earth: The Operators' Manual'-a 3-part series aired nationally on PBS, and supported by the National Science Foundation-was an attempt to improve the understanding of consensus climate science, and showcase examples of clean energy innovations in the United States and worldwide. A fundamental design principle for the series, derived from close reading of social science studies, was to include solutions along with solid science. In addition, the producers enlisted a diverse cast of on-camera personalities alongside Alley: Texas ranchers, Republican senators and Kansan bankers, CEOs and academics, a Navy rear admiral in dress whites, and 'energy captains' in inner city Baltimore. An NSF-mandated Summative Evaluation documented the success of these approaches, and the first two programs reached some 3.6 million viewers on PBS. However, the rapidly-evolving media landscape has meant that national primetime exposure is only part of how climate information is 'sent' and 'received' today. ETOM structured its Facebook page to embody the same solutions-oriented philosophy, and has secured an 'Engagement Index' higher than Buzzfeed, and more than most other environment- and climate-oriented pages. ETOM programs can be downloaded in HD for watch parties, and many schools

  12. Schizophyllum commune: The main cause of dying trees of the Banja Luka arbored walks and parks

    Directory of Open Access Journals (Sweden)

    Matavulj Milan N.

    2013-01-01

    Full Text Available In the frame of investigation of the main cause of dying trees of the main arbored walks (Mladena Stojanovića Aley and Park, the investigation of the presence and diversity of macrofungi in Banja Luka City were undertaken in the period 2006-2011. Relatively poor generic diversity of lignicolous (pathogenic or potentially pathogenic and saprotrophic macrofungi with only 16 species representing this group (13 basidiomycets: Schizophyllum commune, Fomes fomentarius, Stereum hirsutum, Coriolus versicolor, Flammulina velutipes, Pseudotrametes gibbosa, Ganoderma applanatum, G. lucidum, G. adspersum, Polyporus squamosus, Meripilus giganteus, Laetiporus sulphureus, Auricu­laria auricula-judae, and 3 ascomycets: Nectria cinnabarina, Xylaria hypoxylon, X. poly­morpha were recorded. Such a poor qualitative composition of this very important fungal group could be explained by the reduction in the number of plant species in arbored walks and alleys, as well as the reduction in the number of fungi resistant to heavy air pollution caused by nearby (1-5m fuel combustion in engines. Although only preliminary, our results pointed to the necessity of conservation and protection of the most beautiful features of Banja Luka and its alleys and arbored walks, by undertaking the measures of curing damaged trees and treating them with fungicides in order to wipe out the epiphytia caused in more than 95% of cases (dated May 2011 by Split-gill (Schizophyllum commune, present on dead wood but also on damaged trees of Aesculus hyppocastaneum (127 trees, Tilia cordata (124 trees, Tilia platyphyllos (36 trees, Tilia argentea (40 trees, Acer negundo (20 trees, Platanus acerifolia (2 trees, Robinia pseudoacacia (3 trees, Fraxinus ornus (1 tree, Betula pendula (1 tree, Catalpa sp. (2 trees, etc. Altogether, during the last decade, around 200 trees collapsed or were sanitary cut in Banja Luka arbored walk from the Malta site to the Green bridge, a total length around 5 km. The

  13. South Polar Ammonia Clouds on Saturn°

    Science.gov (United States)

    Sromovsky, Lawrence A.; Baines, Kevin H.; Fry, Patrick M.

    2017-10-01

    Most of Saturn is covered by a thick cloud layer of unknown composition. Evidence of the underlying NH3 ice cloud (its strong 3-μm absorption signature) had so far been seen only in association with lightning storms, including the Great Storm of 2010-2011 (Sromovsky et al. 2013, Icarus 226, 402-418), near 35° N planetocentric latitude, and much smaller storms located near 36° S in the Storm Alley region (Baines et al. 2009, Planet. & Space Sci. 57, 1650-1658). In the Great Storm, NH3 ice reached the visible cloud tops. The Storm Alley clouds have more subtle 3-μm signatures, which is consistent with ammonia ice reaching into but not fully penetrating the upper cloud (Sromovsky et al. 2017, Icarus submitted). The presence of 3-μm absorption features in the south polar region is surprising because there is no associated lighting that would indicate deep convection. Radiation transfer modeling of October 2006 VIMS spectra of these features yields good fits with a stacked structure of a thin stratospheric haze, a physically thin and optically thin (~0.2 optical depths at 2 μm) layer of non-absorbing particles, a moderate layer of NH3 ice particles (r=2 μm, ~2 optical depths) near 550 mbar, then a clear region down to about 2 bars, which marks the top of a very optically thick layer of NH4SH particles, which provides a needed strong reduction in thermal emission in the 5-μm window. The structure of neighboring clouds differs dramatically in the NH4SH layer, which has a much lower optical depth and has a cloud top 1 bar deeper. But the ammonia layer is the main modulator of pseudo continuum I/F in reflected sunlight. That layer has an optical depth of about 1.3 in background clouds, but almost double that in the brightest clouds. What makes the 3-μm absorption of the NH3 ice layer more apparent in these polar clouds is the reduced optical depth of the upper cloud layer, which is an order of magnitude less than in other regions on Saturn, perhaps because of polar

  14. Farmers’ perceptions towards agroforestry systems in Babanosa Area, West Kordofan State

    Directory of Open Access Journals (Sweden)

    Kamal Eldin Mohammed Fadl

    2015-06-01

    Full Text Available This study was conducted in Eltemada, Boli and Umghoghai villages at Babanosa area in El-salam locality, South Kordofan State during 2012 and 2013. The objectives were to (1 identify and assess the most important agroforestry systems, (2 to investigate the main factors that affecting the sustainability of the systems, (3 to determine the important field crops that cultivated with trees and (4 to evaluate the effect of the agroforestry systems on the yield of the traditional field crops. For accomplishment of these study 80 questioners was designed and distributed in the selected villages. After the data collection data was analyzed by using descriptive statistic. The results showed that the most important agroforestry systems in the study area are parkland cropping system (58%, boundary planting (26%, wind-breaks (13% and alley cropping (3%.The most important forest trees in the study area are Acacia senegal (32%, Ziziphus spina- christia (28%, Balanites aegeyptiaca (26%, Sclerocary birrea and Guera senegalensis (3%. The main field crops in the study area are groundnut (44%, sorghum (35% and roselle (21%. The results showed that yield of groundnut and sorghum is higher under agroforestry systems compared with the mono-cropping system. The results showed that the majority of respondents (70% prefer to cultivate field crops in agroforestry system, while (30% prefer to cultivate the field crops in a mono-cropping system. The cultivation methods used in the study area include shifting cultivation (52%, mono-cropping (36% and intercropping (12%.The majority of respondents (94% showed that trees improve soil fertility in their farm land. The benefits from trees in farm land include improvement of soil properties (36%, protecting the farm land from wind erosion (28%, improvement of micro-climate (24% and source of income which was indicated by (12% of the respondents. The study recommended that modern agroforestry system such as improved fallow system

  15. Are you pondering what I'm pondering? Time and change in the West Antarctic Ice Sheet.

    Science.gov (United States)

    Hulbe, C. L.

    2016-12-01

    The motto for early 21st Century cryospheric science might be "that happend faster than I thought it would." The fact that change can come quickly to Earth's icy realms can be elucidated from the abstracts of all past Nye Lectures. From Bob Bindscahdler observing that "remarkably, nearly all time scales seem important", to Mark Serreze concluding that "the emerging surprise is the rapidity of change". Equally apparent in past lectures is the imbalance between answers and questions. Kurt Cuffy could not have been more clear about the "major unresolved issues lurking behind this facade of success, including poor understanding". Jeff Dozier was optimistic about merging satellite observations with field and modeling approaches but in many cases the quantitites we seek to measure are hidden from direct observation and the processes we seek to understand are embedded in complex systems. "This complexity may account for the lack of agreement concerning the processes" (Gary Clarke) and even worse, most of our observations are made in a "time of rapid change" (Mary Albert). "Nevertheless progress has been made" (Liz Morris). While "misunderstandings and blind alleys have ironically led to unexpected insight" (Doug MacAyeal), our community and science also benefit from the interest of an ever-expanding community of scholars who find the challenges "clear, exciting and compelling" (Richard Alley). We are active participants in "a climate change drama whose outcome is of concern to us all" (Matt Strum). This presentation will focus on the marine margins of the West Antarctic Ice Sheet (WAIS), places where where we know both a little and a lot, where change is observed at every time scale, and where change is not always driven externally. "We have never witnessed the collapse of a marine ice sheet," (Eric Rignot) and it matters to know as much as we can about the signs, symptoms, and processes of change. I will make the case that not everything of interest happens quickly and

  16. "EARTH: The Operators' Manual" - a hybrid model (TV+online+in-person) to effectively communicate climate change science alongside sustainable energy solutions

    Science.gov (United States)

    Haines-stiles, G.; Alley, R. B.; Akuginow, E.

    2011-12-01

    Recent public opinion surveys have found that Americans underestimate the degree of agreement by climate scientists about global warming and climate change, and - despite growing evidence of ice sheet loss, ocean acidification, sea level rise and extreme weather events - believe less in warming trends in 2011 than they did earlier. The issue has become politicized and controversial. "EARTH: The Operators' Manual" is an informal science education project supported by NSF, the National Science Foundation. Its ambitious goal is to use a hybrid mix of broadcast programs appearing on public television and hosted by Penn State geoscientist, Richard Alley, together with on-site outreach events and online resources and tools, to present core climate science in engaging ways, and to combine that presentation of objective research with an overview of sustainable energy solutions. The project's content and communication strategies have been shaped in response to analyses of public opinion such as the SIX AMERICAS study and aim to address common "skeptic" arguments and share essential climate science. Social science research has also found that audiences seem more open to scientific information where the possibility of a positive response is also offered. The first hour-long PBS program aired nationally in April 2011, has since been re-broadcast, and is also available online. Two more programs will air in 2012, and the presentation at the Fall AGU Conference will preview segments from both programs. Five regionally-diverse science centers (in San Diego, Raleigh NC, St. Paul MN, Fort Worth TX and Portland OR) have hosted outreach events, with Richard Alley and other project participants, and will continue with additional activities through summer 2012. The project's website includes video clips, case studies of energy-saving initiatives world-wide and across the USA, plus an interactive "Energy Gauge" inviting users to assess their current Home, Travel, Food, and Goods and

  17. Effect of handling intensity at the time of transport for slaughter on physiological response and carcass characteristics in beef cattle fed ractopamine hydrochloride.

    Science.gov (United States)

    Hagenmaier, J A; Reinhardt, C D; Bartle, S J; Henningson, J N; Ritter, M J; Calvo-Lorenzo, M S; Vogel, G J; Guthrie, C A; Siemens, M G; Thomson, D U

    2017-05-01

    The effects of handling intensity on the physiological response and carcass characteristics of feedlot cattle fed ractopamine hydrochloride were evaluated at the time of transport to slaughter. Eighty steers (BW = 668 ± 36 kg) representing 10 lots of similar breed, frame size, and degree of finish were blocked by lot, stratified by weight, and randomly assigned to 1 of 2 handling intensities (HI) over a 1,600 m dirt alley course: 1) low-stress handling (LSH) or 2) high-stress handling (HSH). For the LSH treatment, 4 penmates were kept at a walk with the use of a lead rider. For the HSH treatment, 4 penmates were kept at a minimum of a trot and received 2 applications of an electric prod (approximately 1 s per impulse) at 2 separate instances: first in the alley before post-handling sampling, and again during loading for transportation to the abattoir. Behavioral observations and physical indicators of stress were recorded a minimum of 1 h before handling (baseline), immediately after handling (POSTHAND), and while in lairage after a 200 km transport to the abattoir. Vital parameters were recorded at baseline and POSTHAND. Venous blood samples were collected via jugular venipuncture at baseline and POSTHAND, and mixed arterial and venous blood samples were collected during exsanguination at slaughter. Muscle tremors tended to be more prevalent in HSH cattle at POSTHAND ( = 0.10). The HSH cattle tended to have greater POSTHAND heart rate ( = 0.08); however, there was no effect of HI on POSTHAND respiration rate or rectal temperature ( 0.34). The HSH cattle had greater lactate, epinephrine, norepinephrine, cortisol, and glucose concentrations at POSTHAND ( ≤ 0.02). Additionally, HSH cattle had lower POSTHAND blood pH, bicarbonate, base excess, and partial pressure carbon dioxide ( slaughter ( = 0.05); however, there were no differences between HI treatments for the remaining blood variables ( 0.11). Concentrations of stress hormones and CK were significantly

  18. Landscape-level variation in greenhouse gas emissions in vineyards of central California

    Science.gov (United States)

    Berbeco, M.; Steenwerth, K. L.; Jackson, L. E.; Higgins, C.; Yu, O.; Greenhut, R. F.; O'Geen, T.

    2011-12-01

    Greenhouse gas emissions from agricultural soils can differ greatly across the landscape depending on soil type, landscape formation and management, making the implementation of mitigation practices challenging. In our study, we evaluated the carbon dioxide and nitrous oxide emissions from vineyard soils across a broad landscape in the Lodi Wine-grape District representing three soil types of different geologic history and under varying conventional management systems in the Central Valley of California. Soils of the District vary in space as a result of the depositional history of the parent materials from which the soils formed and subsequent weathering. The nature of the deposition of these materials has resulted in systematic patterns of soils in space. We sampled the following soils from this soil sequence over the larger landscape: 1) Slightly weathered granitic alluvium with low clay content located on the southern side of the district; 2) Intermediately weathered soils derived from granitic alluvium with high clay content located on the northern side of the district; and, 3) Highly weathered soils derived from metavolcanic and metasedimentary alluvium with intermediate clay content and rocky soils located on the eastern side of the district. The climate is Mediterranean with cool, moist winters and hot, dry summers. Initial results indicated that under wet conditions, the soils had similar carbon dioxide emissions with little variation between management or landscape formation. However, carbon dioxide emissions were typically higher in the alley than in the vine row. Nitrous oxide emissions were more variable in the higher clay soils as compared to sandier soils (0-180 g N/ha/day and 0-20 g N/ha/day, respectively). Nitrous oxide emissions were similar from the soil in the alley and vine row. We expect to see similar variability for carbon dioxide emissions under drier conditions later in the summer, but predict that it will differ by landscape position

  19. A method to investigate inter-aquifer leakage using hydraulics and multiple environmental tracers

    Science.gov (United States)

    Priestley, Stacey; Love, Andrew; Wohling, Daniel; Post, Vincent; Shand, Paul; Kipfer, Rolf; Tyroller, Lina

    2016-04-01

    Informed aquifer management decisions regarding sustainable yields or potential exploitation require an understanding of the groundwater system (Alley et al. 2002, Cherry and Parker 2004). Recently, the increase in coal seam gas (CSG) or shale gas production has highlighted the need for a better understanding of inter-aquifer leakage and contaminant migration. In most groundwater systems, the quantity or location of inter-aquifer leakage is unknown. Not taking into account leakage rates in the analysis of large scale flow systems can also lead to significant errors in the estimates of groundwater flow rates in aquifers (Love et al. 1993, Toth 2009). There is an urgent need for robust methods to investigate inter-aquifer leakage at a regional scale. This study builds on previous groundwater flow and inter-aquifer leakage studies to provide a methodology to investigate inter-aquifer leakage in a regional sedimentary basin using hydraulics and a multi-tracer approach. The methodology incorporates geological, hydrogeological and hydrochemical information in the basin to determine the likelihood and location of inter-aquifer leakage. Of particular benefit is the analysis of hydraulic heads and environmental tracers at nested piezometers, or where these are unavailable bore couplets comprising bores above and below the aquitard of interest within a localised geographical area. The proposed methodology has been successful in investigating inter-aquifer leakage in the Arckaringa Basin, South Australia. The suite of environmental tracers and isotopes used to analyse inter-aquifer leakage included the stable isotopes of water, radiocarbon, chloride-36, 87Sr/86Sr and helium isotopes. There is evidence for inter-aquifer leakage in the centre of the basin ~40 km along the regional flow path. This inter-aquifer leakage has been identified by a slight draw-down in the upper aquifer during pumping in the lower aquifer, overlap in Sr isotopes, δ2H, δ18O and chloride

  20. DECOMPOSIÇÃO DAS PODAS DAS LEGUMINOSAS ARBÓREAS Gliricidia sepium E Acacia angustissima EM UM SISTEMA AGROFLORESTAL

    Directory of Open Access Journals (Sweden)

    Patrícia Diniz de Paula

    2015-01-01

    Full Text Available ABSTRACT The Agroforestry Systems (SAFs bring multiple benefits and they are an alternative to minimize environmental degradation, and to achieve a sustainable development, due to greatest diversity of species. This study evaluated the contribution of the leguminous trees, gliricídia sepium and Acacia angustissima , grown in alley cropping of banana ( Musa sp. and “açaí” palm ( Euterpe oleraceae used as green manure in the implantation of an Agroforestry Systems. They were compared the production of biomass, nutrients cycling, nitrogen intake, activity and diversity of soil fauna, and banana productivity in the SAF, and with the usage of the legume Pueraria phaseoloides and nitrogen fertilization. The SAF implantation occurred in May 2004, at the Research Center of Embrapa Agrobiologia, in Seropédica, Rio de Janeiro State. The following year it was planted the forest African mahogany specie ( Kaya senegalensis , at the centre of the legumes alleys. The experimental design was of randomized blocks with five treatments and four repetitions. The treatments consisted of the leguminous trees arranged between the lines of bananas and the “açaí” palm, and they were: acacia angustíssima ( Acacia angustissima , tropical kudzu ( Pueraria phaseoloides , and gliricídia (G liricídia sepium ; besides application of nitrogen as urea and spontaneous vegetation. To quantify the production of biomass, and the release of N, P, Ca, Mg and K, the legumes branches were cut and the kudzu tropical and spontaneous vegetation were mowed, in the rainy and dry seasons. The determination of remaining dry matter, releasing of nutrients, decomposition rates, and half life time of plant residues were held to 50 grams of fresh material from litterbags, placed on the soil surface, sampled at 0, 5, 10, 15, 20, 25, 30, 40, 60 and 75 days after the installation of the experiment. Acacia angustissima and kudzu tropical showed higher dry biomass, 9.5 and 10.8 Mg ha

  1. Sub-seafloor epidosite alteration: Timing, depth and stratigraphic distribution in the Semail ophiolite, Oman

    Science.gov (United States)

    Gilgen, Samuel A.; Diamond, Larryn W.; Mercolli, Ivan

    2016-09-01

    Pervasive epidotization of igneous rocks is a common feature in the ophiolite record of hydrothermally altered oceanic crust. Current genetic models view epidosites as markers of focussed upflow of hydrothermal fluid beneath oceanic spreading ridges. The epidosites are envisaged to form at the base of the sheeted dike complex (SDC) during active plate spreading. Our mapping of the Semail ophiolite in Oman has revealed abundant epidosites in the volcanic sequence, some exceeding 1 km2 in extent. They are more frequent and far larger than the mineralogically identical epidosites in the SDC. We have also found epidosites that traverse the entire SDC from bottom to top. Thus, rather than being restricted to the base of the SDC, as implied by current models, epidosites in fact occur throughout the SDC and dominantly within the overlying volcanic pile. We report the occurrence of 19 epidosite bodies and their crosscutting relations with respect to host lava units, dikes, intrusive stocks and also seafloor umbers. The volcanostratigraphic affiliation of the dikes is identified by their whole-rock and clinopyroxene compositions. The relations set constraints on the timing of epidotization with respect to igneous activity in the ophiolite. At least one of the epidosites in the SDC formed during Lasail off-axis volcanism. Another epidosite in the SDC and many in the volcanic units formed later during post-spreading, Alley and Boninitic Alley supra-subduction zone volcanism. Only permissive, not compelling, evidence allows just two of the epidosites to have formed within the main-stage SDC during or shortly after its emplacement. We conclude that epidotization of the oceanic crust is not necessarily coupled to spreading ridges and that it can occur during fore-arc volcanism. This finding is consistent with evidence from the modern seafloor and it requires a different hydrothermal environment to that traditionally associated with alteration beneath spreading axes. The timing

  2. Privacy and security in the era of digital health: what should translational researchers know and do about it?

    Science.gov (United States)

    Filkins, Barbara L; Kim, Ju Young; Roberts, Bruce; Armstrong, Winston; Miller, Mark A; Hultner, Michael L; Castillo, Anthony P; Ducom, Jean-Christophe; Topol, Eric J; Steinhubl, Steven R

    2016-01-01

    The rapid growth in the availability and incorporation of digital technologies in almost every aspect of our lives creates extraordinary opportunities but brings with it unique challenges. This is especially true for the translational researcher, whose work has been markedly enhanced through the capabilities of big data aggregation and analytics, wireless sensors, online study enrollment, mobile engagement, and much more. At the same time each of these tools brings distinctive security and privacy issues that most translational researchers are inadequately prepared to deal with despite accepting overall responsibility for them. For the researcher, the solution for addressing these challenges is both simple and complex. Cyber-situational awareness is no longer a luxury-it is fundamental in combating both the elite and highly organized adversaries on the Internet as well as taking proactive steps to avoid a careless turn down the wrong digital dark alley. The researcher, now responsible for elements that may/may not be beyond his or her direct control, needs an additional level of cyber literacy to understand the responsibilities imposed on them as data owner. Responsibility lies with knowing what you can do about the things you can control and those you can't. The objective of this paper is to describe the data privacy and security concerns that translational researchers need to be aware of, and discuss the tools and techniques available to them to help minimize that risk.

  3. Thermal human biometeorological conditions and subjective thermal sensation in pedestrian streets in Chengdu, China

    Science.gov (United States)

    Zeng, YuLang; Dong, Liang

    2015-01-01

    The outdoor thermal environment of a public space is highly relevant to the thermal perception of individuals, thereby affecting the use of space. This study aims to connect thermal human biometeorological conditions and subjective thermal sensation in hot and humid regions and to find its influence on street use. We performed a thermal comfort survey at three locations in a pedestrian precinct of Chengdu, China. Meteorological measurements and questionnaire surveys were used to assess the thermal sensation of respondents. The number of people visiting the streets was counted. Meanwhile, mean radiant temperature ( T mrt) and the physiological equivalent temperature (PET) index were used to evaluate the thermal environment. Analytical results reveal that weather and street design drive the trend of diurnal micrometeorological conditions of the street. With the same geometry and orientation, a street with no trees had wider ranges of meteorological parameters and a longer period of discomfort. The neutral temperature in Chengdu (24.4 °C PET) is similar to that in Taiwan, demonstrating substantial human tolerance to hot conditions in hot and humid regions. Visitors' thermal sensation votes showed the strongest positive relationships with air temperature. Overall comfort level was strongly related to every corresponding meteorological parameter, indicating the complexity of people's comfort in outdoor environments. In major alleys with multiple functions, the number of people in the street decreased as thermal indices increased; T mrt and PET had significant negative correlations with the number of people. This study aids in understanding pedestrian street use in hot and humid regions.

  4. Mengukir Senyum Lewat Poster Senyum

    Directory of Open Access Journals (Sweden)

    Arif Priyono Susilo Ahmad

    2011-04-01

    Full Text Available Poster is a communications media that are generally in a large enough format with persuasive and informative messages, pasted on the walls on the roadside and residential alleys. Posters can be so effective in conveying the message as a poster is close to the heart of society. The effectiveness of posters in conveying the message can be seen in the winning poster design of the Smiling Poster Contest 2010. The purpose of this article is to see the effectiveness of communication and poster design in a persuasive smile. A smiling poster is intended to foster and to remind the meaning of a smile in socializing. Concern of poster designers were divided into concern for social problems that occur in society and concern in the development of poster design creativity. Technical and strategic skills are needed by designers of the poster. Since poster design works well, it will eventually become a communicative medium in conveying social messages, becomes the driving motivation in positive, open, creative and inspiring thinking.  

  5. Effet de Leucaena leucocephala, des fientes de volaille ou du fumier de bovins sur la productivité du maïs cultivé sur "terre de barre" au sud Bénin

    Directory of Open Access Journals (Sweden)

    Mallouhi, N.

    1997-01-01

    Full Text Available Effect of Leucaena leucocephala, Poultry Manure or Cattle Manure on Maize Productivity on Feralitic Soil "terre de barre" in South Benin. Our work has consisted on the study of post-effect of Leucaen's prunings and poultry manure buried last year and also on the study of the direct effect of cattle manure and its interaction with Leucaen's pruning on maize productivity on feralitic soil "terre de barre". - The mixture of Leucaen's prunings and poultry manure had positive post-effect giving a yield of fresh ears and grains significantly higher (9 % to the reference and other treatments in the plots over the alley. - The supply of 5 t/ha of cattle manure appears insufficient. On the other hand the mixture of Leucaen's prunings and cattle manure gave the best results related to the soil's properties such as organic matter's content or total exchange capacity of the soil and also concerning the yields. In this case we notice that ail the results are significantly higher to the other treatments. These results emphasize the importance of a supply of organic matter's to the soil thereby fertilizing it in humus and mineral elements.

  6. Computer Security: what is your identity?

    CERN Multimedia

    Stefan Lueders, Computer Security Team

    2016-01-01

    In the physical world this is fairly clear; your sense of self is multi-faceted and highly complex but the entity of “you” is well defined.  You can prove your identity simply, typically by showing your ID card or by having someone vouch for you. You are a being layered with attributes. Other people may request some of these attributes: your first name at Starbucks or your shoe size at the bowling alley. But only your most trusted contacts are granted access to your entire set of attributes… or maybe you never expose your identity entirely!   Online, your identity is a very different beast. It is fragmented. Each piece of your identity is typically verified by its own username and password. Occasionally pieces are forgotten or lost to the depths of the Internet. The hundreds of accounts that identify “you” present a security problem. Can you keep track of these accounts and is it even realistic to use unique, non-trivial passwords for ea...

  7. Effects of Shape on Diffusion and Shear Flows

    Science.gov (United States)

    Shaw, Robert; Packard, Norman

    2010-03-01

    Diffusion of point particles is well-understood, likewise the motion of simple particles under shear flow. However if the particles are extended objects with shape, more complicated behavior can occur. For example, objects might enter a shaped channel in a configuration that requires them to back up a finite distance in order to proceed further. A configuration that blocks flow through the channel might be statistically preferred, an attracting metastable state of the system. In the bulk, the configuration space of a set of closely packed rigid objects can become convoluted, with many dead-end alleys. If such a system is subjected to a shear, it may naturally tend to settle in such a dead-end, and have to retrace its path in order to continue further, a configuration can become locally locked. The requirement that the system backtrack to unlock distinguishes this process from ordinary jamming, there need be no dissipation or friction per se. We have a number of computer simulations of the motions of closely packed shaped objects, under both Hamiltonian and Monte Carlo dynamics. In addition we will present a simple analytic model, describing the entry and escape of the system from the attracting locked metastable states.

  8. Interaktivitet - moteord eller passord til fremtidens pedagogikk?

    Directory of Open Access Journals (Sweden)

    Morten Søby

    2001-01-01

    Full Text Available Will interactive digital media promote the construction of intelligent communities in which our social and learning potential can be mutually developed and enhanced? The author points out that trendy phrases are like metaphors captured in a time capsule. In particular he looks at several definitions of interactivity, which he points out is a synthesis of several complex relations between man and digital medias. The paper questions whether interactivity phrases are generated by information technologyıs development prior to learning theoriesı development. He draws on Castellıs use of the word interactivity. He builds further on Engelbartıs definition of how interactive technology can be understood as an intellectual prosthesis as well as Levyıs development of Engelbartıs view of the relationship between knowledge and technology. Time will show whether the term was a password to a new interdisciplinary field for digitalisation and learning or whether we end up in an alley called Hype.

  9. Gliricidia (Gliricidia sepium Green Manures as a Potential Source of N for Maize Production in the Tropics

    Directory of Open Access Journals (Sweden)

    Abdul R. Bah

    2001-01-01

    Full Text Available Use of cheap, N-rich, and environmentally benign legume green manures to correct N deficiency in infertile soils is a very attractive option in the humid tropics. Understanding the influence of management and climate on their effectiveness, and quantifying their contribution to crop productivity, is therefore crucial for technology adoption and adaptation. Mineral N buildup and the contribution to N uptake in maize were studied in an Ultisol amended with fresh Gliricidia leaves. Net mineral N accumulation was compared in mulched and incorporated treatments in a field incubation study. The 15N isotope dilution technique was used to quantify N supplied to maize by Gliricidia leaves in an alley cropping. Mineral N accumulation was slow, but was much greater after incorporation than after mulching. Also, N buildup was always higher in the topsoil (0 to 10 cm than in the subsoil (10 to 20 cm. More NO3-N was leached than NH4-N, and the effect was greater in the incorporated treatment. Surface-applied Gliricidia leaves significantly increased N uptake by maize, and supplied >30% of the total N in the stover and >20% of that in the corn grain, even in the presence of hedgerows. Thus Gliricidia leaf mulch has immense potential to improve productivity in tropical soils.

  10. Can anything better come along? Reflections on the deep future of hydrogen-electricity systems

    International Nuclear Information System (INIS)

    Scott, D. S.

    2006-01-01

    Sometimes, for some things, we can project the deep future better than tomorrow. This is particularly relevant to our energy system where, if we focus on energy currencies, looking further out allows us to leap the tangles of today's conventional wisdom, vested mantras and ill-found hopes. We will first recall the rationale that sets out why - by the time the 22. century rolls around - hydrogen and electricity will have become civilizations staple energy currencies. Building on this dual-currency inevitability we'll then evoke the wisdom that, while we never know everything about the future we always know something. For future energy systems that 'something' is the role and nature of the energy currencies. From this understanding, our appreciation of the deep future can take shape - at least for infrastructures, energy sources and some imbedded technologies - but not service-delivery widgets. The long view provides more than mere entertainment. It should form the basis of strategies for today that, in turn, will avoid setbacks and blind alleys on our journey to tomorrow. Some people accept that hydrogen and electricity will be our future, but only 'until something better comes along.' The talk will conclude with logic that explains the response: 'No! Nothing better will ever come along.'. (authors)

  11. Short rotation woody biomass production as option for the restoration of post-mining areas in lower Lusatia, Germany

    Energy Technology Data Exchange (ETDEWEB)

    Bohm, C.; Quinkenstein, A.; Freese, D. [Brandenburg Univ. of Technology, Cottbus (Germany). Soil Protection and Recultivation; Huttl, R.R. [Brandenburg Univ. of Technology, Cottbus (Germany). Soil Protection and Recultivation; GFZ German Research Centre for Geosciences, Potsdam (Germany)

    2010-07-01

    Reclaimed mine sites in the Lusatian lignite-mining district in Germany are characterized by low annual precipitation and marginal soils. As such, crop yield is typically low and conventional land use systems fail in terms of reliable and efficient crop production. The production of woody biomass for bioenergy may be a promising alternative to improve soil fertility and also to enhance the economic value of these post-mining areas. Previous studies have shown that black locust (Robinia pseudoacacia L.) may be a suitable tree species for this purpose. This paper evaluated the ecological and economic benefits of producing woody biomass in short rotation coppices (SRC) and alley cropping systems (ACS) with black locust. The results showed that compared to conventional agriculture, such land use is not very profitable due to high establishment and harvesting costs and the comparatively low prices for wood energy. However, because of the improved microclimate, the crop yield in ACS is higher than in conventional agriculture. The cultivation of black locust resulted in a higher humus accumulation and in a lower harvest-related nutrient export than the cultivation of alfalfa as a typical recultivation crop in this region. It was concluded SRC with black locust is more beneficial than conventional agriculture in terms of improving soil fertility in the degraded post-mining areas of Lower Lusatia.

  12. On the influence of the alternation of two different cooling systems on dairy cow daily activities

    Directory of Open Access Journals (Sweden)

    Simona M.C. Porto

    2017-02-01

    Full Text Available Among the causes that influence cow welfare, heat stress induced by microclimatic conditions is one of the most relevant and many studies have investigated the efficacy of different cooling systems on animal health status. Nevertheless, the direct influence of the cooling systems on possible modifications of dairy cow behaviour has been addressed in a few studies and the related results were affected by the presence of a paddock, which gave a refuge from hot temperature. Since an alteration of the daily time budget spent by dairy cows in their usual activities can be associated with changes in their health status, this study investigated the effects of the alternation of two different cooling systems on lying, standing, and feeding behaviour of a group of dairy cows bred in a free-stall dairy house where animals had no access to a paddock. The barn was equipped with a fogging system associated with forced ventilation installed in the resting area and a sprinkler system associated with forced ventilation installed in the feeding area. The two systems were activated alternately. The results demonstrated that the management of the two cooling systems affected the analysed behaviours. Though the activation of the cooling system installed in the resting area encouraged the decubitus of animals in the stalls, the activation of that one of the feeding alley could not be able to influence the standing behaviour and had only a moderate positive influence on the feeding activity.

  13. Social participation in spatial order creation and its connection with day-to-day landscape structure

    Directory of Open Access Journals (Sweden)

    Beata J. Gawryszewska

    2008-01-01

    Full Text Available Proper structure of existential space is a consequence of a natural process of site identity and public space shaping and identification of their inhabitants with these sites. As a result of a process of identification with the site, system of private, social and public green spaces is being created. It appears in formal, functional and symbolic levels of urban space perception. It appears in greenery, by private flower beds creating under windows, common green yards functioning, green public spaces, parks and alleys surrounding settlements meaning values of communities etc. It also helps the local communities to identify themselves not only with local housing estate landscape but also with monumental landscape where the new housing estates were built next by. Identification with the site, used this way, furthers not only standard of inhabited space but also monumental landscape promotion which leads to its revitalization. The example of this structure and its creation, Warsaw Housing Settlement by polish CIAM participants: B. and. S. Brukalski, projects of workshops with high school pupils and Warsaw Royal Promenade Project are also instruments which can shape social demand for recreational and cultural objects representing metropolitan character of the city.

  14. Privacy and security in the era of digital health: what should translational researchers know and do about it?

    Science.gov (United States)

    Filkins, Barbara L; Kim, Ju Young; Roberts, Bruce; Armstrong, Winston; Miller, Mark A; Hultner, Michael L; Castillo, Anthony P; Ducom, Jean-Christophe; Topol, Eric J; Steinhubl, Steven R

    2016-01-01

    The rapid growth in the availability and incorporation of digital technologies in almost every aspect of our lives creates extraordinary opportunities but brings with it unique challenges. This is especially true for the translational researcher, whose work has been markedly enhanced through the capabilities of big data aggregation and analytics, wireless sensors, online study enrollment, mobile engagement, and much more. At the same time each of these tools brings distinctive security and privacy issues that most translational researchers are inadequately prepared to deal with despite accepting overall responsibility for them. For the researcher, the solution for addressing these challenges is both simple and complex. Cyber-situational awareness is no longer a luxury-it is fundamental in combating both the elite and highly organized adversaries on the Internet as well as taking proactive steps to avoid a careless turn down the wrong digital dark alley. The researcher, now responsible for elements that may/may not be beyond his or her direct control, needs an additional level of cyber literacy to understand the responsibilities imposed on them as data owner. Responsibility lies with knowing what you can do about the things you can control and those you can’t. The objective of this paper is to describe the data privacy and security concerns that translational researchers need to be aware of, and discuss the tools and techniques available to them to help minimize that risk. PMID:27186282

  15. STS 8 Orbiter mission window pitting and the possible association with the El Chichon eruption of March and April 1982

    Science.gov (United States)

    Cour-Palais, B. G.; Kessler, D. J.; Zook, H. A.; Clanton, U. S.

    1985-01-01

    The possibility that the pitting that occurred in the STS-8 Orbiter windows was caused by dust from the El Chichon volcano eruption in March-April 1982 is considered. The pit density was more than 30/sq cm, most being 2.5-5 microns deep, and showed no evidence of impact melting. An 'alley' of higher incidence of pits in one window coincided with the line of a seam between TPS tiles. The particles causing the sandblasting were concluded to have arrived in parallel and could not be attributed to the ET, SRBs or a dust storm. The sulfuric gas-rich El Chichon plume injected sufficient material into the atmosphere so that the globe was soon encircled. Most of the resulting particulates (480-8400 tons) stayed in the Northern Hemisphere, and H2SO4 and ash concentrations were high during the STS-8 mission. The Orbiter cut through the debris layer at 19.8 km altitude at a 10 deg angle of attack, which matches the particle crater impact angle in the Orbiter windows. Since the passage was at night, larger H2SO4 droplets may have coalesced and formed larger particles on available solid nuclei, thus producing the 20-40 microns cratering observed in the windows.

  16. Spatial distribution of diuron sorption affinity as affected by soil, terrain and management practices in an intensively managed apple orchard.

    Science.gov (United States)

    Umali, Beng P; Oliver, Danielle P; Ostendorf, Bertram; Forrester, Sean; Chittleborough, David J; Hutson, John L; Kookana, Rai S

    2012-05-30

    We investigated how the sorption affinity of diuron (3'-(3,4-dichlorophenyl)-1,1-dimenthyl-urea), a moderately hydrophobic herbicide, is affected by soil properties, topography and management practices in an intensively managed orchard system. Soil-landscape analysis was carried out in an apple orchard which had a strong texture contrast soil and a landform with relief difference of 50 m. Diuron sorption (K(d)) affinity was successfully predicted (R(2)=0.79; pdiuron K(d) with TOC, pH(w), slope and WI as key variables. Mean diuron K(d) values were also significantly different (pdiuron than soil in the alleys. Younger stands, which were found to have lower TOC than in the older stands, also had lower diuron K(d) values. In intensively managed orchards, sorption affinity of pesticides to soils was not only affected by soil properties and terrain attributes but also by management regime. Copyright © 2012 Elsevier B.V. All rights reserved.

  17. Carbon stock quantification of Morella pubescens (H. & B. ex Willd. Wilbur in two agroecosystems (Nariño, Colombia

    Directory of Open Access Journals (Sweden)

    Iván Andrés Delgado Vargas

    2016-07-01

    Full Text Available The carbon stored in radical biomass of Morella pubescens (Humb. & Bonpl. ex Willd. Wilbur, was quantified, in San Pablo, Nariño, Colombia, with height of 2010 m, average annual rainfall of 1300 mm and average temperature of 17ºC. Three experimental unites: silvopastoral system pasture alley cropping (Ac in two planting distances 4x3m and 4x4m, and natural regeneration system (Rn, 7 individual ware taken by experimental unite with (diameters 5 – 7 cm, by experimental unit, the sample was taken to 70 cm and 140 cm from the tree and three depths (0-15, 15-30, and 30-45 cm. In total 24 simples/trees were taken in 21 selected individuals. The mayor quantity of radical biomass and C stock was presented in the Ac arrangement 4x3 m of 27.6 t.ha-1 (14.1 t.C.ha-1; 24 4 t.ha-1 (12.1 t.C.ha-1 distance 4x4 m and 7.5 t.ha-1 and 2.9 t.ha-1In natural regeneration. In system Ac distance 4x4 m there were not differences in C stored by tree Rn, there was a decrease by 4x3 m, thus, the differences of accumulation between the systems, can obey to the density of the sowing.

  18. Differential effects of neural inactivation of the dorsolateral striatum on response and latent extinction.

    Science.gov (United States)

    Goodman, Jarid; Gabriele, Amanda; Packard, Mark G

    2017-04-01

    The present study examined the role of the dorsolateral striatum (DLS) in extinction behavior. Male Long-Evans rats were initially trained on the straight alley maze, in which they were reinforced to traverse a straight runway and retrieve food reward at the opposite end of the maze. After initial acquisition, animals were given extinction training using 1 of 2 distinct protocols: response extinction or latent extinction. For response extinction, the animal was released from the same starting position and had the opportunity to perform the originally reinforced approach response to the goal end of the maze, which no longer contained food. For latent extinction, the animal was confined to the original goal location without food, allowing the animal to form a new cognitive expectation (i.e., that the goal location is no longer reinforced). Immediately before response or latent extinction training, animals received bilateral intra-DLS administration of the sodium channel blocker bupivacaine or control injections of physiological saline. Results indicated that neural inactivation of the DLS with bupivacaine impaired response extinction, but did not influence latent extinction. The dissociation observed indicates that the DLS selectively mediates extinction mechanisms involving suppression of the original response, as opposed to cognitive mechanisms involving a change in expectation. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  19. Can anything better come along? Reflections on the deep future of hydrogen-electricity systems

    Energy Technology Data Exchange (ETDEWEB)

    Scott, D. S. [International Association for Hydrogen Energy (United States); Inst. for Integrated Energy Systems, U. of Victoria (Canada); Environmentalists for Nuclear Energy (Canada)

    2006-07-01

    Sometimes, for some things, we can project the deep future better than tomorrow. This is particularly relevant to our energy system where, if we focus on energy currencies, looking further out allows us to leap the tangles of today's conventional wisdom, vested mantras and ill-found hopes. We will first recall the rationale that sets out why - by the time the 22. century rolls around - hydrogen and electricity will have become civilizations staple energy currencies. Building on this dual-currency inevitability we'll then evoke the wisdom that, while we never know everything about the future we always know something. For future energy systems that 'something' is the role and nature of the energy currencies. From this understanding, our appreciation of the deep future can take shape - at least for infrastructures, energy sources and some imbedded technologies - but not service-delivery widgets. The long view provides more than mere entertainment. It should form the basis of strategies for today that, in turn, will avoid setbacks and blind alleys on our journey to tomorrow. Some people accept that hydrogen and electricity will be our future, but only 'until something better comes along.' The talk will conclude with logic that explains the response: 'No{exclamation_point} Nothing better will ever come along.'. (authors)

  20. Can anything better come along? Reflections on the deep future of hydrogen-electricity systems

    Energy Technology Data Exchange (ETDEWEB)

    Scott, D.S. [Univ. of Victoria, Victoria, British Columbia (Canada)

    2004-07-01

    'Full text:' Sometimes, for some things, we can project the deep future better than tomorrow. This is particularly relevant to our energy system where, if we focus on energy currencies, looking further out allows us to leap the tangles of today's conventional wisdom, vested mantras and ill-found hopes. We will first recall the rationale that sets out why - by the time the 22nd century rolls around - hydrogen and electricity will have become civilization's staple energy currencies. Building on this dual-currencies inevitability we'll then evoke the wisdom that, we never know everything about the future but we always know something. For future energy systems that 'something' is the role and nature of the energy currencies. From this understanding, our appreciation of the deep future can take shape - at least for infrastructures, energy sources and some imbedded technologies-but not service-delivery widgets. The long view provides more than mere entertainment. It should form the basis of strategies for today that, in turn, will avoid blind alleys on our journey to tomorrow. Some people accept that hydrogen and electricity will be our future, but only 'until something better comes along.' The talk will conclude with logic that explains the response: No, nothing better will ever come along. (author)

  1. Cubicle Refusal in Norwegian Dairy Herds

    Directory of Open Access Journals (Sweden)

    Myren HJ

    2001-03-01

    Full Text Available In order to survey the behaviour of choosing the alley area instead of a cubicle as a lying place (cubicle refusal, a questionnaire was sent to the 273 dairy farms in Norway known to keep cows in cubicle housing systems. Sixty-six percent of the farmers contacted were included in the study. The median herd size was 18 cows (range 7–118. More than 85% of the herds had sheds providing one or more cubicles per cow. The mean herd occurrence of cubicle refusal was 6%, but showed great variation (range 0–55%. Regression analysis showed a significant association between rearing heifers in slatted floor pens and an increased cubicle refusal occurrence (p = 0.02, R2 = 0.05, while herd size, use of litter, or cubicle-to-animal ratio were not found to be associated with cubicle refusal. The practice of rearing heifers in slatted floor pens accounted for about one half of the observed cubicle refusal (etiologic fraction = 0.51.

  2. The limited and localized flow of fresh groundwater to the world's oceans

    Science.gov (United States)

    Luijendijk, E.; Gleeson, T. P.; Moosdorf, N.

    2017-12-01

    Submarine groundwater discharge, the flow of fresh or saline groundwater to oceans [Burnett et al., 2003], may be a significant contributor to the water and chemical budgets of the world's oceans [Taniguchi et al., 2002] potentially buffering ocean acidification with groundwater alkalinity and is arguably the most uncertain component of the global groundwater budget [Alley et al., 2002]. The fresh component of submarine groundwater discharge is critical due to its high solute and nutrient load, and has been quantified locally and but only roughly estimated globally using significant assumptions. Here we show that that fresh submarine groundwater discharge is an insignificant water contributor to global oceans (0.05% of the total input) but that the freshwater discharge may still be an important chemical and nutrient contributor especially around distinct hotspots. The first spatially-explicit, physically-based global estimate of fresh submarine groundwater discharge was derived by combining density-dependent numerical groundwater models and a geospatial analysis of global coastal watersheds to robustly simulate the partitioning of onshore and offshore groundwater discharge. Although fresh submarine groundwater discharge is an insignificant part of fresh coastal groundwater discharge, results are consistent with previous estimates of significant recirculated seawater discharging as groundwater as well as quantifying the significant near-shore terrestrial discharge, a flux that has so far been overlooked in global hydrological studies and that affects coastal water budgets, evapotranspiration and ecosystems.

  3. Bajor utcanevek egy magyarországi német településen. [Bavarian street names in a German settlement in Hungary

    Directory of Open Access Journals (Sweden)

    Müller, Márta

    2013-12-01

    Full Text Available This paper examines names for squares, streets (many of which led to neighbouring settlements and alleys in the historical centre of the Hungarian town called Pilisvörösvár (Pest County, given, in the local Bavarian dialect, by Swabian and Bavarian settlers, who populated the place until the middle of the 18th century. The author briefly describes the local German minority, the main features of the Bavarian dialect, as well as the onomastic corpus with respect to the phonetic, morphological, lexical and functional-semantic characteristics of the names. Linguistic analysis is completed with the discussion of how the observed names of Bavarian origin were formed, focusing especially on the historical and socio-cultural factors that played a crucial role in name formation. The Bavarian names for public places were transmitted orally in the local community until the turn of the millennium. Revitalization of the names started in 2009, as a result of which the Bavarian street names on blue and white local history plaques have been placed under the official Hungarian street signs. The last section of the paper presents the steps of this revitalization process.

  4. Patents on periphery of the Amazon rainforest.

    Science.gov (United States)

    de Moura, Emanoel G; Araújo, José R G; Monroe, Paulo H M; de O Nascimento, Ivaneide; Aguiar, Alana C F

    2009-06-01

    In the humid tropics, on the edges of the Amazon forest, the technological challenges to establishing and maintaining productive and sustainable agricultural systems have yet to be overcome. The groups involved in agriculture in the north of Brazil still engage in the practice of slash and burn in order to prepare and fertilize the soil. This produces negative effects for the local and global environment, without the counter-effect of providing social benefits to rural communities. Whether this process continues is of fundamental importance to many countries because it means that slash and burn agriculture is advancing on the Amazon rainforest, with a negative effect on every dimension of national policy. Beyond social political problems the biggest challenge for researchers in the field of tropical agriculture is to offer technological alternatives that can sustain agriculture in soils derived from sedimentary rocks that have been subjected to a high degree of weathering. In this article patented information is also discussed. Experiments undertaken in this region recommend taking advantage of the rapid growth of plants in the tropics. We aimed at proposing a suitable alternative system for a sustainable soil management in the particular conditions of humid tropics, named as "no-till in alley cropping using tree leguminous mulch." This system offers the advantages of: bringing together, in the same space and at the same time, the processes of cultivation and the regeneration of soil fertility.

  5. Indoor smoking ordinances in workplaces and public places in Kansas.

    Science.gov (United States)

    Neuberger, John S; Davis, Ken; Nazir, Niaman; Dunton, Nancy; Winn, Kimberly; Jacquot, Sandy; Moler, Don

    2010-08-01

    The purpose of this study was to investigate the preferences of elected city officials regarding the need for a statewide clean indoor air law and to analyze the content of local smoking ordinances. A survey of elected officials in 57 larger Kansas cities obtained information on the perceived need for statewide legislation, venues to be covered, and motivating factors. Clean indoor air ordinances from all Kansas cities were analyzed by venue. The survey response rate was 190 out of 377 (50.4%) for elected officials. Over 70% of the respondents favored or strongly favored greater restrictions on indoor smoking. Sixty percent favored statewide legislation. Among these, over 80% favored restrictions in health care facilities, theaters, indoor sports arenas (including bowling alleys), restaurants, shopping malls, lobbies, enclosed spaces in outdoor arenas, and hotel/motel rooms. Officials who had never smoked favored a more restrictive approach. Employee and public health concerns were cited as influential by 76%-79% of respondents. Thirty-eight ordinances, covering over half of the state's population, were examined. They varied considerably in their exemptions. Official's attitudes toward smoking regulations were associated with their smoking status. The examination of existing ordinances revealed a piecemeal approach to smoking regulations.

  6. Scrapheap Challenge

    CERN Multimedia

    2004-01-01

    Three British guys at CERN recently took a break from work to try their hand at Scrapheap Challenge. Shown on Channel 4 in the UK, it is a show where two teams must construct a machine for a specific task using only the junk they can scavenge from the scrap yard around them. And they have just 10 hours to build their contraption before it is put to the test. The first round, aired 19 September, pitted a team of three women, from the British Army's Royal Electrical and Mechanical Engineers, against the CERN guys - the Up 'n Atoms: Ali Day, David McFarlane and James Ridewood. Each team, with the help of an appointed expert, had the task of making a giant, 3-metre self-propelled "bowling ball", to roll down a 50 metre bowling alley at skittles 4 metres high. The Up 'n Atoms' contraption featured a small car with a huge wheel on its back. Once up to speed, slamming on the brakes caused the wheel to roll over and take the car with it. On their very last run they managed to take out seven pins. Luckily, though, ...

  7. Carbon stock assessment of two agroforestry systems in a tropical forest reserve in the Philippines

    Energy Technology Data Exchange (ETDEWEB)

    Lasco, R.D.; Sales, R.F.; Estrella, R.; Saplaco, S.R.; Castillo, A.S.A.; Cruz, R.V.O.; Pulhin, F.B. [University of Philippines Los Banos, Laguna (Philippines). College of Forestry & Natural Resources Environmental Forestry Programme

    2001-07-01

    Carbon dioxide is the most abundant greenhouse gas (GHG) that causes global warming. Thus, land uses such as an agroforestry system have a significant role in moderating climate change since they can be sources and sinks of carbon. The aim of the study was to generate data on the carbon stocks of two agroforestry systems, specifically a Gmelina arborea-Theobroma cacao multistorey system and an alley cropping system with Gliricidia sepium hedges at the agroforestry research and demonstration area inside a forest reserve in Southern Luzon, Philippines. The multistorey system had a mean biomass of 258 Mg C ha{sup -1} and a carbon density of 185 Mg C ha{sup -1}. Carbon was stored in the various pools in the following order of magnitude: soil > tree biomass (above-ground) > necromass > understorey vegetation > roots. The Gliricidia hedgerow had a biomass density of 3.8 Mg C ha{sup -1}; total carbon density was 93 Mg C ha{sup -1}, of which 92 Mg C ha{sup -1} was in the soil.

  8. The Larch Genus (Larix Mill., Pinaceae at Peter the Great Botanical Garden

    Directory of Open Access Journals (Sweden)

    Firsov G.A.

    2017-04-01

    Full Text Available There are 148 trees of larches (Larix Mill. cultivating at Peter the Great Botanic Garden of the Komarov Botanical Institute RAS (Saint-Petersburg, Russia which belong to 16 species (22 taxa. They are long-lived trees, up to 200 years old, of large sizes. The larches represent the base of tree-stand of Arboretum and form the alleys at the oldest historical regular part of Botanic Garden. The largest trees reach 31,6 m high (L. dahurica and 113 cm in trunk diameter (L. decidua and L. dahurica. The pride of collection being rare Far Eastern species – L. olgensis and related to it L. lubarskii and L. maritima. There are species promising both for repeated and primary introduction, the best prospects being in the flora of China and of adjacent countries of Eastern Asia. The continuous monitoring on winter hardiness as well as on steadiness to pests and diseases is necessary, which is especially true in conditions of the global warming of the climate. The investigation of reproductive abilities, quality of seeds and of seed generation is of importance. This is necessary to involve the best species and forms into city planting and forest economy.

  9. Droplet Characterization and Penetration of an Ultra-Low Volume Mosquito Adulticide Spray Targeting the Asian Tiger Mosquito, Aedes albopictus, within Urban and Suburban Environments of Northeastern USA.

    Directory of Open Access Journals (Sweden)

    Ary Faraji

    Full Text Available Adult control of Aedes albopictus via ultra-low volume is difficult because this species occurs primarily in peridomestic habitats where obstacles such as buildings and vegetation can disrupt spray plumes and droplet dispersion. We determined droplet penetration and characterization of a pyrethroid adulticide applied from the ground at mid (46.77 ml/ha and maximum (93.53 ml/ha label rates within cryptic habitats of urban and suburban environments. Droplets were collected from all habitats, with no significant differences detected between locations within the same application rate or collection method. No differences were detected in droplet densities (drops per mm2 between rates within urban environments, but more droplets were collected in urban (149.93 ± 11.07 SE than suburban sites (114.37 ± 11.32 at the maximum label rate (P = 0.003. The excellent penetration of aerosols into cryptic habitats of an urban site was likely due to the shorter spray paths afforded by our network of roads and alleys. Mid label rates displayed similar droplet density values as maximum label rates in urban areas, indicating that lower rates may be used effectively to reduce costs, lessen non-target effects, and increase environmental stewardship. Advances in formulations and technology are driving changes in adulticide applications, leading to use of the minimum effective dose for maximum efficacy, precision, and accountability.

  10. Miro1 Enhances Mitochondria Transfer from Multipotent Mesenchymal Stem Cells (MMSC to Neural Cells and Improves the Efficacy of Cell Recovery

    Directory of Open Access Journals (Sweden)

    Valentina A. Babenko

    2018-03-01

    Full Text Available A recently discovered key role of reactive oxygen species (ROS in mitochondrial traffic has opened a wide alley for studying the interactions between cells, including stem cells. Since its discovery in 2006, intercellular mitochondria transport has been intensively studied in different cellular models as a basis for cell therapy, since the potential of replacing malfunctioning organelles appears to be very promising. In this study, we explored the transfer of mitochondria from multipotent mesenchymal stem cells (MMSC to neural cells and analyzed its efficacy under normal conditions and upon induction of mitochondrial damage. We found that mitochondria were transferred from the MMSC to astrocytes in a more efficient manner when the astrocytes were exposed to ischemic damage associated with elevated ROS levels. Such transport of mitochondria restored the bioenergetics of the recipient cells and stimulated their proliferation. The introduction of MMSC with overexpressed Miro1 in animals that had undergone an experimental stroke led to significantly improved recovery of neurological functions. Our data suggest that mitochondrial impairment in differentiated cells can be compensated by receiving healthy mitochondria from MMSC. We demonstrate a key role of Miro1, which promotes the mitochondrial transfer from MMSC and suggest that the genetic modification of stem cells can improve the therapies for the injured brain.

  11. [Meat inspection in the medieval Zähringer towns.].

    Science.gov (United States)

    Häsler, S

    2010-01-01

    An explanation of medieval practices of meat supply and regulation, using examples drawn from the so-called "Zähringer towns" founded by the Dukes of Zähringen: Bern, Burgdorf, Thun, Murten, Freiburg and Rheinfelden. For the town councils it was important to be able to provide the population with sufficient quantities of good-quality meat at fair prices. After the 14th century the slaughtering of animals had to be carried out in public slaughterhouses. Meat could only be sold publicly, at designated butchers' stalls. Meat and organs were checked on a daily basis by the town's meat inspectors, who verified the names under which products were sold, their price, and hygienic conditions, including the absence of tapeworm larvae. In addition to the publicly-regulated meat trade, town dwellers could also buy meat products at the markets, and could raise their own pigs, sheep and goats to be slaughtered in the back alleys. Permission to raise small livestock at home was a privilege granted by the town council. The sale of meat by non-resident peddlers was officially forbidden, but could not be prevented entirely.

  12. Pathok Negoro mosque as the form of territorial defense region of Mataram Kingdom of Islam Java in Jogjakarta

    Science.gov (United States)

    Setyowati, E.; Hardiman, G.; Murtini, T. W.

    2018-01-01

    Territory is the space boundary of ownership. Defense concepts of an area also include territory. The defense concept of a territory of power or ownership is usually in the form of fortress, ditch, river, road, alley or gate. Many of these are seen in the forms of old city of Dutch’s inheritances. Javanese Islamic Kingdom in Yogyakarta has territory in the form of mosque. The mosque is called the Pathok Negoro as consists of 4 mosques. This territorial not same with another Islamic kingdoms. The research problem is why mosque used as a form of defense? What is the uniqueness?The purpose of the research is to reveal the form of territory of Javanese Islamic Kingdom. The benefit of this research is to get the characteristic form of territory of Javanese Islamic Kingdom in Yogyakarta. Their located in Ploso Kuning, Mlangi, babadan, Dongkelan, and Wonokromo. The research method that was used was qualitative method with grounded research, by using history and map search.In the analysis was carried out identification and comparison between mosques.The results show that there are characteristics on the location, the building orientation, the landscape, the area pattern and the shape of the building.

  13. Handling may cause increased shedding of Escherichia coli and total coliforms in pigs.

    Science.gov (United States)

    Dowd, Scot E; Callaway, Todd R; Morrow-Tesch, Julie

    2007-01-01

    Many common management practices such as transportation, weaning, handling, and changes in social groups are stressful to animals. The effects of stressors on the intestinal microbial ecosystem are still being investigated. This study was designed to evaluate the effect of handling on naturally occurring intestinal populations of Escherichia coli and total coliforms in swine. Finishing pigs were subjected to repeated handling, in which they were removed from their pens each day, moved down an alley to a scale, weighed individually, and moved back to their pens. This procedure was performed with the control groups once at the beginning and once at the end of the study, while treatment groups were herded and weighed each day for 8 days. Most probable numbers (MPN)/g of E. coli (a subset of the coliform group) and total coliforms were measured daily for treatment and control groups. Using repeated measures analyses, increased MPN/g of feces, for both E. coli and total coliforms, were seen in the treatment groups compared to the control groups (P coliforms, possibly due to stress, and these populations of bacteria may have potential utility as inexpensive, noninvasive indicators of handling-related stress in pigs.

  14. Ressources et partage de l'eau dans l'oasis de Kenadsa (Sud-Ouest Algerien; approche historique et constat

    Directory of Open Access Journals (Sweden)

    YOUCEF BENMOUSSA

    2015-07-01

    Full Text Available Resources And Water Sharing In The Oasis Of Kenadsa (Southwest Algeria; Historical Approach And Findings. Kenadsa, a peaceable oasis in southwestern Algeria, with the discovery and exploitation of coal (1917 - 1956, underwent graft of Western models for its development. That has cleared the oasis of the spatial dimension and tr ansformed into a mining village by excellence. These networks of foggaras draining groundwater, enclosed in a multilayer aquifer, which becomes free on the northern border of the Ksar. There were 25 foggaras of sources (Ain, each of which had its own drai nage channels to downstream gardens of Ksar. The distribution of water from these sources was ensured by a complex network, fed by drainage galleries that meander the alleys of Ksar and gives place to access points for domestic uses. The right to water is generally private property; one could dispose of according to modes of transmission of a property. It’s sharing for irrigation is governed by the volume and time. Currently, only some ten foggaras of sources that are still alive (Ain Sidi Mbarek, Ain Dir, Belkaid Ain, Ain Sheikh ..... These waters are characterized by mediocre quality (pH 7.31, CE: 4.88 ms / cm, RS 2420 mg / l Ca ++: 288.2 mg / l, SO4 -- : 468 83 mg / l..

  15. Bioindicators of soil quality in coffee organic cultivation systems

    Directory of Open Access Journals (Sweden)

    Márcio Sampaio Pimentel

    2011-05-01

    Full Text Available The objective of this work was to assess the effect of different coffee organic cultivation systems on chemical and biological soil characteristics, in different seasons of the year. The following systems were evaluated: coffee intercropped with one (CJ1, two (CJ2 or three (CJ3 pigeon pea (Cajanus cajan alleys; coffee planted under full sun (CS; area planted with sweet pepper and snap bean in a conventional tillage system (AC; and secondary forest area (FFR. Row spacing in CJ1, CJ2, CJ3 and CS was 2.0x1.0, 2.8x1.0, 3.6x1.0, and 2.8x1.0 m, respectively. Soil samples were collected at 10-cm depth, during the four seasons of the year. The results were subjected to analysis of variance, principal component analysis, and redundancy analysis. There was an increase in edaphic macrofauna, soil basal respiration, and microbial quotient in the summer. Total macrofauna density was greater in CJ2 followed by CJ3, CS, CJ1, AC and FFR; Coleoptera, Formicidae, and Isoptera were the most abundant groups. There are no significant differences among the areas for soil basal respiration, and the metabolic quotient is higher in CJ1, CJ3, and FFR. Microbial biomass carbon and the contents of K, pH, Ca+Mg, and P show greater values in AC.

  16. The pattern of injury and poisoning in South East Iran.

    Science.gov (United States)

    Ansari-Moghaddam, Alireza; Martiniuk, Alexandra Lc; Mohammadi, Mahdi; Rad, Mahdieh; Sargazi, Fatemeh; Sheykhzadeh, Khodadad; Jelodarzadeh, Seddighe; Karimzadeh, Fatemeh

    2012-09-10

    Injury is a leading cause of morbidity and mortality worldwide, and even more so in low and middle-income countries (LMICs). Iran is a LMIC and lacks information regarding injury for program and policy purposes. This study aimed to describe the incidence and patterns of injury in one province in South Eastern Iran. A hospital-based, retrospective case review using a routinely collected registry in all Emergency Departments in Sistan and Baluchistan province, Iran for 12 months in 2007-2008. In total 18,155 injuries were recorded during the study period. The majority of injuries in South Eastern Iran were due to road traffic crashes. Individuals living in urban areas sustained more injuries compared to individuals from rural areas. Males typically experienced more injuries than females. Males were most likely to be injured in a street/alley or village whereas females were most likely to be injured in or around the home. In urban areas, road traffic related injuries were observed to affect older age groups more than younger age groups. Poisoning was most common in the youngest age group, 0 to 4 years. This study provides data on incidence and patterns of injury in South Eastern Iran. Knowledge of injury burden, such as this paper, is likely to help policy makers and planners with health service planning and injury prevention.

  17. Land Use Planning of Way Betung Watershed for Sustainable Water Resources Development of Bandar Lampung City

    Directory of Open Access Journals (Sweden)

    Bunasor Sanim

    2011-01-01

    Full Text Available Way Betung watershed is one of the important water resources in Lampung Province and it provides a clean water for Bandar Lampung City through a regional water supply company (PDAM. By the increase of population and economical activities of Bandar Lampung City, the need of clean water also increase, however by the time, the conditions of Way Betung watershed as water resources are declining. Therefore, to improve or to restore Way Betung watershed, a high cost is needed. The research was aimed: (a to study the effects of Way Betung watershed land use change on the water resources of Bandar Lampung City, (b to arrange the sustainable development of Way Betung watershed in order to maintain the availability of water resources. The sustainable developments of water resources of Way Betung watershed were arranged in five alternatives/scenarios and each alternative was related to its erosion (USLE method and its run off volume (SCS method. The results showed that land use changes of Way Betung watershed (1991-2006 were likely to increase daily maximum discharge (Q max, to decrease daily minimum discharge (Q min, to increase fluctuation of river discharge, and to increase yearly run off coeffcient. The best sustainable development of water resources of Way Betung watershed, Lampung Province, was alternative/scenario-4 (forest as 30% of watershed areas + alley cropping in the mix garden. This alternative will decrease erosion to the level lower than tolerable soil loss and also decrease fluctuation of monthly run off.

  18. Investigating Mesoscale Convective Systems and their Predictability Using Machine Learning

    Science.gov (United States)

    Daher, H.; Duffy, D.; Bowen, M. K.

    2016-12-01

    A mesoscale convective system (MCS) is a thunderstorm region that lasts several hours long and forms near weather fronts and can often develop into tornadoes. Here we seek to answer the question of whether these tornadoes are "predictable" by looking for a defining characteristic(s) separating MCSs that evolve into tornadoes versus those that do not. Using NASA's Modern Era Retrospective-analysis for Research and Applications 2 reanalysis data (M2R12K), we apply several state of the art machine learning techniques to investigate this question. The spatial region examined in this experiment is Tornado Alley in the United States over the peak tornado months. A database containing select variables from M2R12K is created using PostgreSQL. This database is then analyzed using machine learning methods such as Symbolic Aggregate approXimation (SAX) and DBSCAN (an unsupervised density-based data clustering algorithm). The incentive behind using these methods is to mathematically define a MCS so that association rule mining techniques can be used to uncover some sort of signal or teleconnection that will help us forecast which MCSs will result in tornadoes and therefore give society more time to prepare and in turn reduce casualties and destruction.

  19. INTEGRATION OF PEPPER AND LIVESTOCK (Alternative Eco-Friendly Farm Model During Post-Mining of Tin in Bangka Belitung Islands

    Directory of Open Access Journals (Sweden)

    Achmad A. Rivaie *

    2014-01-01

    Full Text Available Commodity of white pepper from the Bangka Island is one of spice crop comodities having a high economic value and can be expected to be the supporting crop for the strength of household economy in a pepper-cow-based agroforestry (LASA during post-mining of tin. In this farm model, pepper (Piper nigrum is integrated with livestocks (cows and the crops of cattle feed grown as a hedge crop or as intercrop in alley cropping. The increase of global demand for pepper along with the price gives a great oppotunity to the development of this integrated model to revive farmers’s motivation in the Province of Bangka Belitung to manage their crops in a eco-friendly manner, which is in turn can also increase the region's economy. Needs analysis shows that it is necessary to do studies on innovations, technologies, and institutions that can be applied from upstream to downstream, as well as policies to support the development of agribusiness model of LASA.

  20. Resource heterogeneity and foraging behaviour of cattle across spatial scales

    Directory of Open Access Journals (Sweden)

    Demment Montague W

    2009-04-01

    Full Text Available Abstract Background Understanding the mechanisms that influence grazing selectivity in patchy environments is vital to promote sustainable production and conservation of cultivated and natural grasslands. To better understand how patch size and spatial dynamics influence selectivity in cattle, we examined grazing selectivity under 9 different treatments by offering alfalfa and fescue in patches of 3 sizes spaced with 1, 4, and 8 m between patches along an alley. We hypothesized that (1 selectivity is driven by preference for the forage species that maximizes forage intake over feeding scales ranging from single bites to patches along grazing paths, (2 that increasing patch size enhances selectivity for the preferred species, and that (3 increasing distances between patches restricts selectivity because of the aggregation of scale-specific behaviours across foraging scales. Results Cows preferred and selected alfalfa, the species that yielded greater short-term intake rates (P Conclusion We conclude that patch size and spacing affect components of intake rate and, to a lesser extent, the selectivity of livestock at lower hierarchies of the grazing process, particularly by enticing livestock to make more even use of the available species as patches are spaced further apart. Thus, modifications in the spatial pattern of plant patches along with reductions in the temporal and spatial allocation of grazing may offer opportunities to improve uniformity of grazing by livestock and help sustain biodiversity and stability of plant communities.

  1. The influence of the environment on dairy cow behavior, claw health and herd lameness dynamics.

    Science.gov (United States)

    Cook, Nigel B; Nordlund, Kenneth V

    2009-03-01

    Free stall housing increases the exposure of dairy cows' claws to concrete walk-ways and to manure between periods of rest, and generally shows the highest rate of lameness compared with other dairy management systems. However, there is great variation within a system, and the rate of new cases of lameness can be reduced to very low levels provided time spent resting per day is maximized through good stall design, access to stalls through stocking density control and comfortable transition cow facilities, limiting the time spent milking, provision of adequate heat abatement, and good leg hygiene. Sand bedded stalls are useful as they also permit lame cows to maintain adequate daily rest. Rubberized alley flooring surfaces benefit the cow by reducing claw wear and trauma compared to concrete, making them ideal for parlor holding areas and long transfer lanes and walk ways. However, caution is required when using rubber floors in pens with uncomfortable stalls due to apparent adverse effects on cow time budgets, which may in turn have a detrimental effect on lameness.

  2. Study of the impacts of regulations affecting the acceptance of Integrated Community Energy Systems: public utility, energy facility siting and municipal franchising regulatory programs in Idaho. Preliminary background report

    Energy Technology Data Exchange (ETDEWEB)

    Feurer, D A; Weaver, C L; Gallagher, K C; Hejna, D; Rielley, K J

    1980-01-01

    The Idaho state legislature has created the Idaho Public Utilities Commission and has given the Commission the power and jurisdiction to supervise and regulate every public utility in the state. The Commission is comprised of three members appointed by the governor with the approval of the senate. Commissioners serve full time and are appointed for six year terms. No more than two of the members may be from the same political party. Title 61 of the Idaho Code, which establishes the Commission and delineates its powers, vests all regulatory responsibility in the Commission to the exclusion of local government. However, as an incident to their franchising power, municipalities may impose reasonable regulations on the use of their streets. The Idaho Supreme Court holds that the transfer of regulatory power over public utilities to the Commission did not diminish the powers and duties of municipalities to control and maintain their streets and alleys. Limited statutory authority also exists giving municipalities the power to regulate the fares, rates, rentals, or charges made for the service rendered under any franchise granted in such city, except such as are subject to regulation by the Public Utilities Commission. With the exception of this limited power, the Commission is the sole agency having regulatory power over Idaho public utilities. Public utility regulatory statutes, energy facility siting programs, and municipal franchising authority are examined to identify how they may impact on the ability of an organization, whether or not it be a regulated utility, to construct and operate an ICES.

  3. A Blueprint for Florida's Clean Energy Future - Case Study of a Regional Government's Environmental Strategy

    Directory of Open Access Journals (Sweden)

    Margaret Lowman

    2009-04-01

    Full Text Available On 13 July 2007, Governor Charlie Crist of Florida signed executive orders to establish greenhouse gas emission targets that required an 80 percent reduction below 1990 levels by the year 2050. Florida is a very high-risk state with regard to climate change. Its 1,350-mile-long coastline, location in "Hurricane Alley," reliance on coral reefs and other vulnerable natural resources for its economy, and the predictions that state population could double in the next 30 years all contribute to this designation of "high-risk. As a consequence of the potential economic and ecological impacts of climate change to Florida, a series of Action Teams were created to plan for adaptation to impending environmental changes. As the 26th largest emitter of carbon dioxide on a global scale, Florida needs to act aggressively to create a clean energy footprint as part of its statewide initiatives but with global impacts. This case study examines the process and expected outcomes undertaken by a regional government that anticipates the need for stringent adaptation.

  4. Can anything better come along? Reflections on the deep future of hydrogen-electricity systems

    International Nuclear Information System (INIS)

    Scott, D.S.

    2004-01-01

    'Full text:' Sometimes, for some things, we can project the deep future better than tomorrow. This is particularly relevant to our energy system where, if we focus on energy currencies, looking further out allows us to leap the tangles of today's conventional wisdom, vested mantras and ill-found hopes. We will first recall the rationale that sets out why - by the time the 22nd century rolls around - hydrogen and electricity will have become civilization's staple energy currencies. Building on this dual-currencies inevitability we'll then evoke the wisdom that, we never know everything about the future but we always know something. For future energy systems that 'something' is the role and nature of the energy currencies. From this understanding, our appreciation of the deep future can take shape - at least for infrastructures, energy sources and some imbedded technologies-but not service-delivery widgets. The long view provides more than mere entertainment. It should form the basis of strategies for today that, in turn, will avoid blind alleys on our journey to tomorrow. Some people accept that hydrogen and electricity will be our future, but only 'until something better comes along.' The talk will conclude with logic that explains the response: No, nothing better will ever come along. (author)

  5. Nitrogen fixation by Gliricidia sepium: decomposition of its leaves in soil and effects on sweet-corn yields

    International Nuclear Information System (INIS)

    Zaharah, A.R.; Sharifuddin, H.A.H.; Anular, R.; Bah, A.R.; Mwange, K.Nk.; Kathuli, P.; Juma, P.

    1998-01-01

    Nitrogen fixation by Gliricidia sepium subjected to three pruning regimes (one, two or four cuts per year) was measured using the 15 N-dilution technique with Cassia siamea as the reference species. Over a 4-year period, estimates of the fraction of N derived from fixation, generally 2 fixer. Gliricidia sepium leaves were placed in litter-bags, buried in an ultisol and sampled at intervals over 70 days. The half-life for dry matter was 17 days, and about 60% of the N was lost within 10 days; K and Ca were the most rapidly released nutrients, with half-lives of only 1 and 3 days, respectively. The N contributions from G. sepium leaves and roots to alley-cropped sweet corn were quantified by the 15 N-dilution technique over three growing seasons. The application of leaves with roots resulted in increased N uptake and dry matter yield in corn. Below-ground competition between hedgerow and corn, assessed using 32 P with the third crop, occurred under conditions of low nutrient-availability. The data imply that there is no advantage of the cut-and-carry system over permanent hedgerows, provided that prunings are applied at the time of nutrient demand in the crop. (author)

  6. Evaluation of larch trees (Larix Mill., Pinaceae

    Directory of Open Access Journals (Sweden)

    Firsov Gennadii

    2016-12-01

    Full Text Available Peter the Great Botanical Garden of the Komarov Boranical Institute has 148 larch samples (Larix Mill., Pinaceae which represent 22 taxa. They are long-lived large trees, up to 200 years of age, representing the base for a forest stand of an arboretum and forming alleys in the oldest regular part of the Garden. The tallest trees reach 31,6 m (L. dahurica and 113 cm in diameter (L. decidua and L. dahurica. Due to the warming in the St. Petersburg area, there is a noticeable drying found on the trees' crowns. Based on the results of an inventory in 2015, 43 trees can be assigned to the first category; the other 105 trees suffer from drying of shoots, twigs and branches. The degree of drying corresponds with the age of trees. One of the possible reasons of the deterioration in the conditions of larch trees at the arboretum of the Komarov Botanical Institute may be the influence of the Phytophthora species. Soil research samples show presence of Phytophthora syringae (Berk. Kleb. in the risosphere of L. decidua. It is the first time, this species of Phytophthora has been discovered at the Peter the Great Botanical Garden.

  7. Setting the space for sex: architecture, desire and health issues in gay bathhouses.

    Science.gov (United States)

    Holmes, Dave; O'Byrne, Patrick; Gastaldo, Denise

    2007-02-01

    This aim of this study was to describe and compare the physical design, as well as the atmosphere of urban gay bathhouses, and reflect on how desire operates within these premises when it intersects with the bathhouse environment and health imperatives. Three bathhouses were studied for a total of 147 h of observation. Men's desire for other men has created a landscape of spaces (real and virtual) where sex takes place in parks, alleys, restrooms, rest stops, adult theatres, video arcades, bookstores, bars, gay bathhouses and finally, the Internet. Although the Internet is perceived as an easy way for encountering sexual partners, gay bathhouses remain the most popular and convenient way, for men having sex with men to meet for regular or casual sex. This paper presents the descriptive results of an ethnographic nursing study that took place in three gay bathhouses located in two Canadian metropolitan areas. Gay bathhouses offer patrons a space within which a wide range of interactions, sensations and pleasure can be experienced. This paper highlights the specific features of three gay bathhouses, compares settings according to their specific architectural features and related sexual activities, and finally, proposes some changes in light of certain health issues.

  8. Sliding Friction on Liquid-Infused Surfaces

    Science.gov (United States)

    Rashed, Ziad; Habibi, Mohammad; Boreyko, Jonathan

    2017-11-01

    Slippery porous liquid-infused surfaces (SLIPS) are well-known for their ability to stably minimize the hysteresis of a wide variety of liquids. However, whether SLIPS could also reduce the sliding friction of solid objects has not been given much consideration. Here, we measure the friction force associated with dragging an aluminum cube across an array of ordered silicon micropillars impregnated with silicone oil. The solid fraction of the micropillars was either 0.025 or 0.25, while the viscosity of the silicone oil was 10, 100, or 1,000 cSt. Non-intuitively, it was observed that the sliding friction decreased with increasing lubricant viscosity or increasing solid fraction. These findings suggest that the key parameter is therefore the hydraulic resistance of the alleys between the micropillars, which should be as large as possible to minimize lateral oil drainage from underneath the sliding body. This would indicate that scaling down to nano-roughness would be optimal for minimizing the sliding friction, which was confirmed by additional experiments on a disordered nanostructured substrate.

  9. The double-slit experiment and the time-reversed fire alarm

    International Nuclear Information System (INIS)

    Halabi, T.

    2010-01-01

    When both slits of the double-slit experiment are open, closing one paradoxically increases the detection rate at some points on the detection screen. Feynman famously warned that temptation to understand such a puzzling feature only draws into blind alleys. Nevertheless, we gain insight into this feature by drawing an analogy between the double-slit experiment and a time-reversed fire alarm. Much as closing the slit increases probability of a future detection, ruling out fire drill scenarios, having heard the fire alarm, increases probability of a past fire (using Bayesian inference). Classically, Bayesian inference is associated with computing probabilities of past events. We therefore identify this feature of the double-slit experiment with a time-reversed thermodynamic arrow. We believe that much of the enigma of quantum mechanics is simply due to some variation of time's arrow. In further support of this, we employ a plausible formulation of the thermodynamic arrow to derive an uncertainty in classical mechanics that is reminiscent of quantum uncertainty.

  10. Uncorking the Future: Transitions to a New Paradigm

    Directory of Open Access Journals (Sweden)

    Garry Jacobs

    2015-05-01

    Full Text Available This article explores issues discussed at three recent WAAS events regarding the process of transition to a new paradigm. The prominent institutions and policies governing the present paradigm are founded upon a bedrock of ideas and values and an abstract, reductionistic mode of analytic thinking detached from people and social reality. Escape from the present blind alley and transition to a new paradigm require adoption of a different way of thinking that is human-centered, value-based, inclusive and synthetic. The multidimensional challenges confronting humanity today are the consequence of precious opportunities missed at the end of the Cold War. At the same time the awareness and energy released by these challenges has the potential for converting current challenges into unprecedented opportunities for progress at the global level. The outcome depends on our capacity to discover the complementarity underlying apparently contradictory, opposite viewpoints. Multi-culturalism is at once the source of intense frictions and conflict and the rich genetic potential from which a new paradigm can emerge. A new paradigm requires a deeper understanding of the cultural underpinnings of democracy, a rational examination of the sacred cow of national sovereignty, and explicit recognition of the social responsibility of science for the consequences of scientific discovery and technological innovation. Leadership will play a crucial role in determining the outcome – intellectual leadership at the level of ideas, scientific leadership that exhibits consciousness responsibility, transformational leadership at the level of international institutions and nation-states.

  11. Monosodium glutamate neurotoxicity increases beta amyloid in the rat hippocampus: a potential role for cyclic AMP protein kinase.

    Science.gov (United States)

    Dief, Abeer E; Kamha, Eman S; Baraka, Azza M; Elshorbagy, Amany K

    2014-05-01

    Glutamate excitotoxicity and cyclic AMP-activated protein kinase (AMPK) are both recognized as important mediators in neurodegenerative disorders including Alzheimer's disease (AD). To investigate whether oral or subcutaneous monosodium glutamate (MSG) neurotoxicity mimics some features of AD and whether these can be reversed by the AMPK activator Pioglitazone. Male Wistar rats aged 5 weeks were administered oral or subcutaneous MSG for 10 days with or without daily oral Pioglitazone. Two additional groups given only saline orally or subcutaneously acted as controls. At age 10 weeks the rats were subjected to neurobehavioral testing, then sacrificed for measurement of AMPK, β-amyloid and Fas ligand in the hippocampus. Oral and subcutaneous MSG both induced a lowering of hippocampal AMPK by 43% and 31% respectively (P2-fold increase in hippocampal Fas ligand, a mediator of apoptosis (P4-fold and >5-fold in the oral and subcutaneous groups. This was associated with increased latency before crossing to the white half in the black-white alley and before the first rear in the holeboard test, suggesting increased anxiety. Pioglitazone decreased hippocampal β-amyloid accumulation and Fas ligand, but did not ameliorate the neurobehavioural deficits induced by MSG. MSG treatment enhances β-amyloid accumulation in the rat hippocampus. Our results suggest a role for AMPK reduction in mediating the neurotoxic effects of glutamate, including β-amyloid accumulation. Copyright © 2014 Elsevier Inc. All rights reserved.

  12. "Preaching To The Choir" And Empowering The Congregation: Using Facebook And Face Time To Counter Denial

    Science.gov (United States)

    Akuginow, E.; Haines-Stiles, G.; Alley, R. B.

    2012-12-01

    "Earth: The Operators' Manual" (ETOM) is an education and outreach initiative, supported by NSF, which uses stories, metaphors and innovative communications strategies to cut through misinformation about climate change and promote positive action. External evaluation provides both quantitative and qualitative evidence on the success of this approach. This presentation includes short videos illustrating the strategy, and images from live nationwide events and Facebook posts. ETOM includes three PBS specials, a series of on-site presentations by scientists and military officers, a website functioning as portal to its video components, and a lively and growing Facebook community where uninformed statements about climate are often rebutted by 3rd party contributors not formally affiliated with the project. At outreach events at science centers such as the Science Museum of Minnesota, geoscientist Richard Alley, host of the TV programs, presented to large audiences with ample opportunities for follow-up Q&A. Audience surveys reported that Alley offered "the most clear explanation of linking carbon dioxide to climate change" and noted that his physical performance (nodding his head to show his North Pole bald spot to illustrate precession) was memorable. "I'll have that vision in my mind forever." 91% said the information was new to them, and 96% said the performance encouraged them to discuss the issues with friends: "He gave us language that we can use to communicate to other people, and I think that's what we need more than more data." But surveys also requested still more arguments to counter denial. The producers added a set of rebuttals ("But my brother-in-law said…") to the next live performance, at a Science Pub in Portland OR, with positive responses. The live events relied on stories and metaphors that audiences found new and memorable. Emitting CO2 is rather like how we used to dump filthy human waste out our windows, before the sanitation revolution. "You

  13. Associations between lying behavior and lameness in Canadian Holstein-Friesian cows housed in freestall barns.

    Science.gov (United States)

    Solano, L; Barkema, H W; Pajor, E A; Mason, S; LeBlanc, S J; Nash, C G R; Haley, D B; Pellerin, D; Rushen, J; de Passillé, A M; Vasseur, E; Orsel, K

    2016-03-01

    Lying behavior is an important measure of comfort and well-being in dairy cattle, and changes in lying behavior are potential indicators and predictors of lameness. Our objectives were to determine individual and herd-level risk factors associated with measures of lying behavior, and to evaluate whether automated measures of lying behavior can be used to detect lameness. A purposive sample of 40 Holstein cows was selected from each of 141 dairy farms in Alberta, Ontario, and Québec. Lying behavior of 5,135 cows between 10 and 120 d in milk was automatically and continuously recorded using accelerometers over 4 d. Data on factors hypothesized to influence lying behavior were collected, including information on individual cows, management practices, and facility design. Associations between predictor variables and measures of lying behavior were assessed using generalized linear mixed models, including farm and province as random and fixed effects, respectively. Logistic regression models were used to determine whether lying behavior was associated with lameness. At the cow-level, daily lying time increased with increasing days in milk, but this effect interacted with parity; primiparous cows had more frequent but shorter lying bouts in early lactation, changing to mature-cow patterns of lying behavior (fewer and longer lying bouts) in late lactation. In barns with stall curbs >22 cm high, the use of sand or >2 cm of bedding was associated with an increased average daily lying time of 1.44 and 0.06 h/d, respectively. Feed alleys ≥ 350 cm wide or stalls ≥ 114 cm wide were associated with increased daily lying time of 0.39 and 0.33 h/d, respectively, whereas rubber flooring in the feed alley was associated with 0.47 h/d lower average lying time. Lame cows had longer lying times, with fewer, longer, and more variable duration of bouts compared with nonlame cows. In that regard, cows with lying time ≥ 14 h/d, ≤ 5 lying bouts per day, bout duration ≥ 110 min

  14. Commensal ecology, urban landscapes, and their influence on the genetic characteristics of city-dwelling Norway rats (Rattus norvegicus).

    Science.gov (United States)

    Gardner-Santana, L C; Norris, D E; Fornadel, C M; Hinson, E R; Klein, S L; Glass, G E

    2009-07-01

    Movement of individuals promotes colonization of new areas, gene flow among local populations, and has implications for the spread of infectious agents and the control of pest species. Wild Norway rats (Rattus norvegicus) are common in highly urbanized areas but surprisingly little is known of their population structure. We sampled individuals from 11 locations within Baltimore, Maryland, to characterize the genetic structure and extent of gene flow between areas within the city. Clustering methods and a neighbour-joining tree based on pairwise genetic distances supported an east-west division in the inner city, and a third cluster comprised of historically more recent sites. Most individuals (approximately 95%) were assigned to their area of capture, indicating strong site fidelity. Moreover, the axial dispersal distance of rats (62 m) fell within typical alley length. Several rats were assigned to areas 2-11.5 km away, indicating some, albeit infrequent, long-distance movement within the city. Although individual movement appears to be limited (30-150 m), locations up to 1.7 km are comprised of relatives. Moderate F(ST), differentiation between identified clusters, and high allelic diversity indicate that regular gene flow, either via recruitment or migration, has prevented isolation. Therefore, ecology of commensal rodents in urban areas and life-history characteristics of Norway rats likely counteract many expected effects of isolation or founder events. An understanding of levels of connectivity of rat populations inhabiting urban areas provides information about the spatial scale at which populations of rats may spread disease, invade new areas, or be eradicated from an existing area without reinvasion.

  15. Incentive loss and hippocampal gene expression in inbred Roman high- (RHA-I) and Roman low- (RLA-I) avoidance rats.

    Science.gov (United States)

    Sabariego, Marta; Morón, Ignacio; Gómez, M José; Donaire, Rocío; Tobeña, Adolf; Fernández-Teruel, Alberto; Martínez-Conejero, José A; Esteban, Francisco J; Torres, Carmen

    2013-11-15

    Two recent microarray and qRT-PCR studies showed that inbred Roman high- (RHA-I, low anxiety and frustration vulnerability) and low-avoidance (RLA-I, high anxiety and frustration vulnerability) rats, psychogenetically selected on the basis of their divergence in two-way avoidance performance, differed in basal whole-brain and hippocampal expression of genes related to neurotransmission, emotion, stress, aversive learning, and drug seeking behavior. We have extended these studies by analyzing strain differences in hippocampal gene expression following a frustrative experience involving reward downshift, i.e. instrumental successive negative contrast (iSNC), a phenomenon in which the sudden reduction of an expected reward induces frustration/anxiety. Food-deprived male Roman rats were exposed to a reduction in the amount of solid food presented in the goal of a straight alley (from 12 pellets in "training" trials - i.e. preshift trials- to 2 pellets in "frustration testing" trials - i.e. postshift trials-). The iSNC effect, as measured by response latencies in the "postshift" trials, appeared only in RLA-I rats (i.e. higher response latencies in the 12-2 RLA-I group as compared to the 2-2 RLA-I control group in postshift trials). Two and a half hours after the "postshift" behavioral test, hippocampi were removed and stored (-80°C) until analysis. Microarray analysis of these hippocampi showed that four differentially-expressed, and qRT-PCR-validated genes (TAAR2, THAP1, PKD2L1, NANOS), have relevance for brain function and behavior, including schizophrenia, depression, anxiety, and drug addiction, thus showing the usefulness of Roman strains as a genetic model for research on the neurogenetic basis of frustration. Copyright © 2013 Elsevier B.V. All rights reserved.

  16. Club Americano de Tokio – Japón

    Directory of Open Access Journals (Sweden)

    Yendo, -

    1976-04-01

    Full Text Available The new installations of this complex contain 12,730 m2 divided on two structures: one 10 storeyed main tower with a restaurant for 300 people, 5 banquet halls, conference rooms and offices. The other, lower building is provided with a bowling alley, swimming pool and other recreation facilities for ladies, gentlemen, young people and families. The construction is entirely of reinforced concrete. The massive and impressive looking facade is made up of a combination of fairfaced concrete, with a white granulated finish, and panels of ceramic tiles of the same colour. Inside the building the predominating colour is white, though in some cases combined with striking colours. The entire furniture was made to measure, by means of which it could be better adapted to the particular requirements. The illumination is fluorescent, incandescent or special depending on the various sections.Las nuevas instalaciones de este complejo comprenden 12.730 m2en una torre principal de 10 plantas, con restaurante para 300 personas, cinco salones de banquetes, salas de reuniones y oficinas, y un edificio de recreo, a menor altura, con pista de bolos, piscina y diversas instalaciones para señoras, caballeros, jóvenes y familias. La construcción es en su totalidad de hormigón armado. La fachada, de aspecto macizo y monumental,está constituida por una combinación de hormigón visto, con un acabado granulado blanco, y paneles de azulejo cerámico, del mismo color. En el interior predomina el color blanco, combinado, en algunas zonas, con tonos cálidos. Todo el mobiliario se diseñó e hizo a la medida, consiguiendo de este modo la mayor confortabilidad. La iluminación, según las zonas, es fluorescente, incandescente o especial.

  17. Management of Agroforestry Practices in Assosa District, Benishangul Gumuze Region, Ethiopia

    Science.gov (United States)

    Kifle, E. T.; Asfaw, Z.; Abdelkadir, A.

    2017-12-01

    Trees on farms have evolved from the selective retention of useful trees on agricultural lands following the severe forest destruction and degradation for agriculture and other uses. As a consequence, trees on farms form the main vegetation types in much of rural Ethiopia in general and Assosa district in particular. In order to increase the products and services of these important agroforestry species there is a need to identify and document the species type and their management practices. To this end, this study is intended to:1) identify agroforestry types, species richness, use-diversity and management of the woody and non-woody plant species 2) record on-farm tree management practices and 3) assess the perception and attitude of farmers towards tree management. A combination of assessment methods including species inventory, key informant discussions and questionnaire surveys were employed in the study. The key findings of the study have shown that a) there were four major agroforestry practices namely homrgardens, parklands, alley cropping and farm boundary plantings with homegardens and parklands appearing to be the dominant practices, b) a total of 57 woody and non-woody species were found to form the main vegetation species with about 21 species commonly shared by both homegardens and parklands c)the difference in mean number of stems in homegardens and parklands was significantly different (ppests/diseases, scarcity of water and poor survival of seedlings were the major problems. Therefore, land certification, water resource development, integrated pest management(IPM), training of farmers and further research on the cultural management practices are key recommendations for further development of agroforestry in the study area. Keywords: homegardens; parklands; local knowledge; slant-cut; inventory; key informants; questionnaire

  18. Short communication: Ability of dogs to detect cows in estrus from sniffing saliva samples.

    Science.gov (United States)

    Fischer-Tenhagen, C; Tenhagen, B-A; Heuwieser, W

    2013-02-01

    Efficient estrus detection in high-producing dairy cows is a permanent challenge for successful reproductive performance. In former studies, dogs have been trained to identify estrus-specific odor in vaginal fluid, milk, urine, and blood samples under laboratory conditions with an accuracy of more than 80%. For on-farm utilization of estrus-detection dogs it would be beneficial in terms of hygiene and safety if dogs could identify cows from the feed alley. The objective of this proof of concept study was to test if dogs can be trained to detect estrus-specific scent in saliva of cows. Saliva samples were collected from cows in estrus and diestrus. Thirteen dogs of various breeds and both sexes were trained in this study. Five dogs had no experience in scent detection, whereas 8 dogs had been formerly trained for detection of narcotics or cancer. In the training and test situation, dogs had to detect 1 positive out of 4 samples. Dog training was based on positive reinforcement and dogs were rewarded with a clicker and food for indicating saliva samples of cows in estrus. A false indication was ignored and documented in the test situation. Dogs with and without prior training were trained for 1 and 5 d, respectively. For determining the accuracy of detection, the position of the positive sample was unknown to the dog handler, to avoid hidden cues to the dog. The overall percentage of correct positive indications was 57.6% (175/304), with a range from 40 (1 dog) to 75% (3 dogs). To our knowledge, this is the first indication that dogs are able to detect estrus-specific scent in saliva of cows. Copyright © 2013 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

  19. Technical note: Validation of a commercial system for the continuous and automated monitoring of dairy cow activity.

    Science.gov (United States)

    Tullo, E; Fontana, I; Gottardo, D; Sloth, K H; Guarino, M

    2016-09-01

    Current farm sizes do not allow the precise identification and tracking of individual cows and their health and behavioral records. Currently, the application of information technology within intensive dairy farming takes a key role in proper routine management to improve animal welfare and to enhance the comfort of dairy cows. An existing application based on information technology is represented by the GEA CowView system (GEA Farm Technologies, Bönen, Germany). This system is able to detect and monitor animal behavioral activities based on positioning, through the creation of a virtual map of the barn that outlines all the areas where cows have access. The aim of this study was to validate the accuracy, sensitivity, and specificity of data provided by the CowView system. The validation was performed by comparing data automatically obtained from the CowView system with those obtained by a manual labeling procedure performed on video recordings. Data used for the comparisons were represented by the zone-related activities performed by the selected dairy cows and were classified into 2 categories: activity and localization. The duration in seconds of each of the activities/localizations detected both with the manual labeling and with the automated system were used to evaluate the correlation coefficients among data; and subsequently the accuracy, sensitivity, specificity, and positive and negative predictive values of the automated monitoring system were calculated. The results of this validation study showed that the CowView automated monitoring system is able to identify the cow localization/position (alley, trough, cubicles) with high reliability in relation to the zone-related activities performed by dairy cows (accuracy higher than 95%). The results obtained support the CowView system as an innovative potential solution for the easier management of dairy cows. Copyright © 2016 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.

  20. Modelling mean transit time of stream base flow during tropical cyclone rainstorm in a steep relief forested catchment

    Science.gov (United States)

    Lee, Jun-Yi; Huang, -Chuan, Jr.

    2017-04-01

    Mean transit time (MTT) is one of the of fundamental catchment descriptors to advance understanding on hydrological, ecological, and biogeochemical processes and improve water resources management. However, there were few documented the base flow partitioning (BFP) and mean transit time within a mountainous catchment in typhoon alley. We used a unique data set of 18O isotope and conductivity composition of rainfall (136 mm to 778 mm) and streamflow water samples collected for 14 tropical cyclone events (during 2011 to 2015) in a steep relief forested catchment (Pinglin, in northern Taiwan). A lumped hydrological model, HBV, considering dispersion model transit time distribution was used to estimate total flow, base flow, and MTT of stream base flow. Linear regression between MTT and hydrometric (precipitation intensity and antecedent precipitation index) variables were used to explore controls on MTT variation. Results revealed that both the simulation performance of total flow and base flow were satisfactory, and the Nash-Sutcliffe model efficiency coefficient of total flow and base flow was 0.848 and 0.732, respectively. The event magnitude increased with the decrease of estimated MTTs. Meanwhile, the estimated MTTs varied 4-21 days with the increase of BFP between 63-92%. The negative correlation between event magnitude and MTT and BFP showed the forcing controls the MTT and BFP. Besides, a negative relationship between MTT and the antecedent precipitation index was also found. In other words, wetter antecedent moisture content more rapidly active the fast flow paths. This approach is well suited for constraining process-based modeling in a range of high precipitation intensity and steep relief forested environments.

  1. Endoscopic laser anterior commissurotomy for anterior glottic web: one-stage procedure.

    Science.gov (United States)

    Su, Chih-Ying; Alswiahb, Jamil N; Hwang, Chung-Feng; Hsu, Cheng-Ming; Wu, Pei-Yin; Huang, Hsun-Hsien

    2010-05-01

    The conventional method for preventing web formation after anterior glottic web surgery is keel insertion. However, this presents risks of airway compromise and granulation tissue formation, which could necessitate tracheotomy in addition to a secondary procedure for keel removal. We introduce a novel, 1-stage endoscopic laser anterior commissurotomy for preventing anterior glottic web re-formation. Twenty patients with glottic webs involving the anterior commissure were studied. The lesions were removed by transoral carbon dioxide laser microsurgery. In all patients, the anterior glottic web was vaporized along with the inner perichondrium of the thyroid cartilage over the anterior commissure area, creating a raw vertical break "alley" between the anterior vocal folds that measured between 0.3 and 0.5 cm in width and between 0.8 and 2 cm in length. The preoperative and postoperative vocal folds and voice quality were evaluated by videostrobolaryngoscopy and voice recordings. All 20 patients had anterior glottic webs ranging from 11% to 64% of the length from the anterior commissure to the vocal process. None of the patients developed restenosis at the anterior commissure of a severity similar to that of the initial lesion during follow-up (mean, 13 months; range, 3 to 44 months).All patients except 1 reported satisfaction with their voice improvement. Outcome analysis revealed that partial re-formation of the web was noted in 4 patients. One-stage, endoscopic laser anterior commissurotomy was effective and relatively safe for removing glottic webs, for preventing anterior glottic web re-formation, and for improving vocal fold performance among our patients.

  2. MODELING OF NAPHTHA PYROLYSIS WITH USING GENETIC ALGORITM

    Directory of Open Access Journals (Sweden)

    V. K. Bityukov

    2015-01-01

    Full Text Available Summary. In operation of industrial pyrolysis furnaces, the main task is the selection of the optimal mode of thermal decomposition of the feedstock, depending on the yield of the desired products under conditions of technological limitations on the process. To solve this problem for an operating reactor, this paper considers the SRT-VI Large-Capacity industrial Furnace , the mathematical model of the pyrolysis process was constructed, using a kinetic scheme which consists of primary reaction of decomposition of raw materials and secondary elementary reactions of interaction of the considered mixture components, the heat balance equation and hydrodynamics of flow in the coil. The raw material for the selected installation type is naphtha (straight-run petrol. Output parameters of the model are the molar costs of marketable hydrocarbons. The reactor is described by the equation of ideal displacement in the static mode of operation. It is assumed that all reactions have a temperature dependence that follows the Arrhenius law. The activation energies of chemical processes were estimated using the PolanyiSemenov equation and identification of pre-exponential factors was carried out using a genetic algorithm (GA. This task requires solving simultaneous system of differential equations describing the pyrolysis process and a search for a large number of unknown parameters, and therefore it is proposed to modify the GA. Optimal scheme includes Gray encoding arithmetic operators, tournament selection, with tournament ranking more than 4, crossover with partial random choice of alleys, mutations with a high probability of occurring and elitism with competitive global competition. Using the proposed approach, the parametric identification of model process is accomplished. The analysis of the simulation results with the data of operating reactor showed its suitability for use in order to control the pyrolysis process.

  3. Sustainable processes synthesis for renewable resources

    International Nuclear Information System (INIS)

    Halasz, L.; Povoden, G.; Narodoslawsky, M.

    2005-01-01

    Renewable resources pose special challenges to process synthesis. Due to decentral raw material generation, usually low transport densities and the perishable character of most renewable raw materials in combination with their time dependent availability, logistical questions as well as adaptation to regional agricultural structures are necessary. This calls for synthesis of structures not only of single processes but of the whole value chain attached to the utilisation of a certain resource. As most of the innovative technologies proposed to build on a renewable raw material base face stiff economic competition from fossil based processes, economic optimality of the value chain is crucial to their implementation. On top of this widening of the process definition for synthesis, many processes on the base of renewable resources apply technologies (like membrane separations, chromatographic purification steps, etc.) for which the heuristic knowledge is still slim. This reduces the choice of methods for process synthesis, mainly to methods based on combinatorial principles. The paper investigates applicability as well as impact on technology development of process synthesis for renewable raw material utilisation. It takes logistic considerations into account and applies process synthesis to the case study of the green biorefinery concept. The results show the great potential of process synthesis for technology development of renewable resource utilisation. Applied early in the development phase, it can point towards the most promising utilisation pathways, thus guiding the engineering work. On top of that, and even more important, it can help avoid costly development flops as it also clearly indicates 'blind alleys' that have to be avoided

  4. Method of preventing unwanted traffic in the “Tudor Vladimirescu” University Campus

    Science.gov (United States)

    Dontu, A. I.; Maftei, A.; Barsanescu, P. D.; Sachelarie, A.; Budeanu, B.

    2016-08-01

    In 1970’ when the university campus was built the road infrastructure was designed for a very small number of cars. Over time technology has advanced and the number of vehicles has risen. According to the Directorate of Vehicle Registration from Iasi in 2015 there were 173.619 registered vehicles, about 11,000 vehicles in addition to 2014. This rise in vehicle numbers has lead to a particular problem in which, vehicle drivers prefer in some cases the use of back alleys and back roads to get to the destination. The ”Tudor Vladimirescu” University Campus is not a main road of transit, is a residential area that does not support a high number of vehicles and especially does not support heavy vehicles. In our case study we observed the tendency of drivers to use the campus roads as a method of bypassing rush hour traffic in their route, especially in the case of taxi vehicles as well as light trucks and vans that use the campus roads as access to the commercial stores and restaurants that are situated in the front of the campus. In the study of ”Tudor Vladimirescu” University Campus traffic, on terrain vehicle number collection has been conducted, this was done one week, day by day, and this has revealed that: • the number of cars which enter in the campus area is high. • a lot of cars only transit the campus on route to the commercial area. • 25% from that cars are taxis • trucks and light trucks have been present. In this paper we present a solution that resolves these problems which have been identified in the analysis of the current campus status. In terrain measurements mathematical calculations accompanied with PTV Vissim software simulations using real world data have been used to confirm the proposed solution is viable.

  5. The prehistory of haemodialysis as a treatment for uraemia.

    Science.gov (United States)

    Cameron, J Stewart

    2016-02-01

    Less is generally known about the ideas, events and personalities which drove developments permitting the evolution of haemodialysis as a clinically useful form of palliation and treatment, than its subsequent success and failures. This pre-history of haemodialysis is summarized here. One must remember that with hindsight we can now discern connections between ideas and developments which were not perceptible in their time, and that progress towards any new idea, material or piece of hardware was usually random and undirected, and outcomes uncertain. We must also remember the many blind alleys we can now safely ignore, to give a spurious continuity to the development of ideas. The prehistory of dialysis begins with study of the diffusion of solute and solvent in osmosis in living systems and experimental settings, and the retention of potentially toxic substances in kidney failure, during the 18th and early 19th centuries. These two areas came together in work in the mid-19th century on diffusion of gases and liquids, and showed that natural and synthetic membranes could selectively hinder different solutes. This explained osmosis and allowed semi-permeable membranes to be used and designed. These ideas underpinned the subsequent history of both dialysis using body cavities such as the peritoneum (not discussed here) and ex vivo dialysis of blood. To perform this, new membranes and anticoagulants were needed. These led to the first attempts in animals in 1912-3, and human patients in 1924-8, but only the purification and synthesis of newer materials such as cellulose and heparin allowed practical and successful haemodialysis to evolve in the 1940s.

  6. The future is urban.

    Science.gov (United States)

    1992-05-01

    Urban centers are growing due to natural increase and the movement of people from rural areas. Urban areas are the traditional centers of trade, science, and culture, but growth over a threshold results in crime, congestion, and pollution. Sustainability is threatened in modern towns that are dependent on other sources for food, fuel, or water. Housing, water, food supplies, and sanitation, communication, and transportation services are threatened in rapidly growing cities. In 1990 45/100 people lived in towns or cities. Hyper-cities have grown in number to 20, of which 14 are in developing countries. 83% of world population increase is expected to occur in cities. In 48 countries with faster population growth cities had growth rates averaging about 6.1% per year, and the urban share of total population averaged 2.8%. In 49 countries with slower population growth, urban growth rates averaged only 3.6% per year, and the urban share of total population averaged about 1.8%. Squatter settlements are endemic to urban areas that are congested and without basic services, limited housing particularly for the poor, and few job opportunities. The number of street children in urban areas has risen. This child population is subjected to low wages, overwork, auto accidents, poor health, and lack of social services. Malnutrition is a more serious issue in urban areas. In the Philippines malnutrition is 3% nationally and 9% in Metro Manila. Rural land reform in the Philippines is no longer a viable solution. In Metro Manila squatters are expected to increase in number to 4 million people by the year 2000, which would be almost 50% of total population. The squatter areas are areas of neglect, decay, and poverty. Cities are viewed as development's "blind alleys."

  7. Carbon storage of different soil-size fractions in Florida silvopastoral systems.

    Science.gov (United States)

    Haile, Solomon G; Nair, P K Ramachandran; Nair, Vimala D

    2008-01-01

    Compared with open (treeless) pasture systems, silvopastoral agroforestry systems that integrate trees into pasture production systems are likely to enhance soil carbon (C) sequestration in deeper soil layers. To test this hypothesis, total soil C contents at six soil depths (0-5, 5-15, 15-30, 30-50, 50-75, and 75-125 cm) were determined in silvopastoral systems with slash pine (Pinus elliottii) + bahiagrass (Paspalum notatum) and an adjacent open pasture (OP) with bahiagrass at four sites, representing Spodosols and Ultisols, in Florida. Soil samples from each layer were fractionated into three classes (250-2000, 53-250, and <53 microm), and the C contents in each were determined. Averaged across four sites and all depths, the total soil organic carbon (SOC) content was higher by 33% in silvopastures near trees (SP-T) and by 28% in the alleys between tree rows (SP-A) than in adjacent open pastures. It was higher by 39% in SP-A and 20% in SP-T than in open pastures in the largest fraction size (250-2000 microm) and by 12.3 and 18.8%, respectively, in the intermediate size fraction (53-250 microm). The highest SOC increase (up to 45 kg m(-2)) in whole soil of silvopasture compared with OP was at the 75- to 125-cm depth at the Spodosol sites. The results support the hypothesis that, compared with open pastures, silvopastures contain more C in deeper soil layers under similar ecological settings, possibly as a consequence of a major input to soil organic matter from decomposition of dead tree-roots.

  8. Les aliments des habitants de la « cabane » / Food in the shack

    Directory of Open Access Journals (Sweden)

    Amandine Plancade

    2008-10-01

    Full Text Available Daniel, Lucien, Gérard et Jean-Baptiste habitent une cabane dans une ruelle d'une grande ville. Leur alimentation est issue principalement de dons, de restes ou de déchets. Le terrain mené auprès d'eux permet de mettre en évidence comment ces denrées doivent être revalorisées pour pouvoir être consommées. Entrent en ligne de compte les conditions de leur obtention, l'acte culinaire et la création de déchets qui s'en suit. L'analyse montre donc que loin de se réduire à sa dimension nutritive, l'alimentation dans ces conditions de précarité organise la vie sociale des habitants de cette cabane : c'est par elle que passe la création de relations cordiales avec le voisinage, et la possibilité de devenir aidant/donateur à son tour auprès de personnes encore plus démunies.Daniel, Lucien, Gérard and Jean-Baptiste live in a shack, in a city back-alley. They get their food mainly from donations, left-overs or waste. The fieldwork performed in their company sheds light on the fact that new values must be conferred to such foods in order to become edible. What matters is how the food was obtained, the cooking process, and the subsequent production of waste. The analysis shows that feeding in such precarious conditions, far from being reduced to its nutritive dimension, organizes the social life of this shack's residents: food is what makes friendly relations possible with neighbours and gives the opportunity to become helper/ donator in turn towards even more destitute persons

  9. The importance of an alternative for sustainability of agriculture around the periphery of the Amazon rainforest.

    Science.gov (United States)

    Moura, Emanoel G; Sena, Virley G L; Corrêa, Mariana S; Aguiar, Alana das C F

    2013-04-01

    The unsustainable use of the soil of the deforested area at the Amazonian border is one of the greatest threats to the rainforest, because it is the predominant cause of shifting cultivation in the region. The sustainable management of soils with low natural fertility is a major challenge for smallholder agriculture in the humid tropics. In the periphery of Brazilian Amazonia, agricultural practices that are recommended for the Brazilian savannah, such as saturating soils with soluble nutrients do not ensure the sustainability of agroecosystems. Improvements in the tilled topsoil cannot be maintained if deterioration of the porous soil structure is not prevented and nutrient losses in the root zone are not curtailed. The information gleaned from experiments affirms that in the management of humid tropical agrosystems, the processes resulting from the interaction between climatic factors and indicators of soil quality must be taken into consideration. It must be remembered that these interactions manifest themselves in ways that cannot be predicted from the paradigm established in the other region like the southeast of Brazil, which is based only on improving the chemical indicators of soil quality. The physical indicators play important role in the sustainable management of the agrosystems of the region and for these reasons must be considered. Therefore, alley cropping is a potential substitute for slash and burn agriculture in the humid tropics with both environmental and agronomic advantages, due to its ability to produce a large amount of residues on the soil surface and its effect on the increase of economic crop productivity in the long term. The article presents some promising patents on the importance of an alternative for sustainability of agriculture.

  10. Uranium Mill Tailings Remedial Action Program. Radiological survey of Shiprock vicinity property SH07, Shiprock, New Mexico, September-November 1982

    International Nuclear Information System (INIS)

    Flynn, K.F.; Justus, A.L.; Sholeen, C.M.; Smith, W.H.; Wynveen, R.A.

    1984-05-01

    At the time of the survey, one residential structure was located on the property. The lands surrounding the structure were, for the most part, landscaped with lawn cover and other vegetation. The assessment activities included determination of indoor and outdoor surface radiation levels, for both fixed and removable contamination, through direct instrument and smear (indoor only) surveys; measurement of ambient external penetrating radiation levels at 1-meter heights; and analyses of air and soil samples. No evidence of radioactive contamination was found in the residential structure; background levels of radioactivity were indicated throughout. Radiation exposure rates were less than the 20 μR/h above background limit. Short-term radon daughter measurements did not exceed the 0.02 WL limit for average annual concentration including background. The assessment did indicate elevated levels of radioactivity at several areas in the outside environs. A general area of elevated radioactivity was found in the frontyard and alleyway, encompassing about 2300 ft 2 . Elevated levels were also found in the northwest corner of the property, encompassing about 320 ft 2 , and in the southeast corner, encompassing about 39 ft 2 . An area of elevated radioactivity was found at a backyard slab, constructed of decorative flagstone and encompassing about 160 ft 2 . Radiochemical analyses of the soil sample collected from the southeast corner indicated a radium concentration of 41 +- 5 pCi/g, which is in excess of the limit of 5 pCi/g above background. Analyses of a surface soil sample collected in the alley from an adjacent vicinity property site also indicated a radium concentration in excess of those limits. Subsurface soil sampling was not conducted. Remedial action for this vicinity site should be considered

  11. Effects of exercise timing on sleep architecture and nocturnal blood pressure in prehypertensives

    Directory of Open Access Journals (Sweden)

    Fairbrother K

    2014-12-01

    Full Text Available Kimberly Fairbrother,1 Ben Cartner,1 Jessica R Alley,1 Chelsea D Curry,1, David L Dickinson,2 David M Morris,1 Scott R Collier1 1Vascular Biology and Autonomic Studies Laboratory, Department of Health and Exercise Science, 2Department of Economics, Appalachian State University, Boone, NC, USA Background: During nocturnal sleep, blood pressure (BP “dips” compared to diurnal BP, reducing stress on the cardiovascular system. Both the hypotensive response elicited by acute aerobic exercise and sleep quality can impact this dipping response. Purpose: The purpose of this study was to investigate the effects of aerobic exercise timing on circadian BP changes and sleep architecture. Materials and methods: Twenty prehypertensive subjects completed the study. During four test sessions, participants first completed a graded exercise test to exhaustion and then performed 30 minutes of treadmill exercise at 7 am (7A, 1 pm (1P, and 7 pm (7P in a random, counterbalanced order at 65% of the heart rate obtained at peak oxygen uptake. An ambulatory cuff was used to monitor BP responses during 24 hours following exercise, and an ambulatory sleep-monitoring headband was worn during sleep following each session. Results: Aerobic exercise at 7A invoked a greater dip in nocturnal systolic BP than exercise at 1P or 7P, although the greatest dip in nocturnal diastolic BP occurred following 7P. Compared to 1P, 7A also invoked greater time spent in deep sleep. Conclusion: These data indicate that early morning may be the most beneficial time to engage in aerobic exercise to enhance nocturnal BP changes and quality of sleep. Keywords: nocturnal dipping, prehypertension, aerobic exercise

  12. Street Life as the negotiation process: case study of Sidewalk Informal Economy in Ho Chi Minh City

    Science.gov (United States)

    Hien Dang, The

    2018-04-01

    The study researches the issue of informal pavement economy in Ho Chi Minh City, a sector that has always been an important part of the city’s economy but has not been recognized by the local state due to some certain facts. By using surveys and in-depth interviews in the cases of four streets and one alley in HCMC’s center, combined with literature review, the paper does not only aim at sketching the portrait of HCMC’s informal sector but also put it in the relationship with surrounding related sectors. The outcomes have some similarities to previous cases in the field of Hanoi and other parts of Global South, but at the same time reveal some unique characteristics of informal sector in HCMC. In which results, the key finding is that informal work is not a low and unproductive sector nor is it the obstacle to the deemed civilized and modern image of the city. In contrast, these activities are the suppliers of goods and jobs for the urban poor, creating diversity for the economy. Being regarded as an unrecognized sector by the Government, informal sector has no success in negotiating at high institute level, but succeeded at the lowest levels of the state’s enforcement system relying on the social capital of long-time relationship and interaction. It is noticeable that informal sector is willing to contribute to the civilization and modernization. It also gains the acceptance and support of the society and media. All of these will open up opportunities for its future development.

  13. Making Connections to Students' Lives and Careers Throughout a General Education Science Course

    Science.gov (United States)

    LaDue, D. S.

    2014-12-01

    The University of Oklahoma's general education lecture course Severe & Unusual Weather, taught in two sections each fall and spring, covers about nine topics. The sections are taught by different instructors, each of whom has flexibility to employ a variety of instructional strategies and choose specific topics to cover while meeting the requirement that general education courses in the natural sciences help students understand the importance of the science for appreciating the world around them. Students enrolled have been approximately 6-10% returning adult students, some of whom were veterans or active duty military, and about 10% members of racial or ethnic groups. Their majors are mostly in the humanities (theater, photography) and social sciences (education, English, journalism, sociology), with some natural science majors (psychology, aviation). For the past two years, Section 001 has been designed with adult and active learning concepts in mind, using deliberate connections between course content and students' lives and careers to motivate meaningful learning. Students were grouped in teams according to similar majors and assigned group presentations connecting course content to topics that should interest them, such as economic impacts of weather, societal and personal impacts of severe weather, risks to aviation, media coverage of weather, and psychological and sociological responses to weather risks. Students learn about the peer review process for scientific papers while also exploring a connection of course content to their future career or life interests through papers that are run through a mock peer review process. Public policy is discussed in several sections of the course, such as hurricane building codes, wind-resistant construction in tornado alley, and the disproportionate impacts of weather and climate on certain socioeconomic groups. Most students deeply appreciate the opportunity to explore how course content intersects with their lives

  14. Acquisition and extinction of continuously and partially reinforced running in rats with lesions of the dorsal noradrenergic bundle.

    Science.gov (United States)

    Owen, S; Boarder, M R; Gray, J A; Fillenz, M

    1982-05-01

    Local injection of 6-hydroxydopamine was used to selectively destroy the dorsal ascending noradrenergic bundle (DB) in rats. Two lesion procedures were used, differing in the extent of depletion of forebrain noradrenaline they produced (greater than 90% or 77%). In Experiments 1-3 the rats were run in a straight alley for food reward on continuous (CR) or partial (PR) reinforcement schedules. The smaller lesion reduced and the larger lesion eliminated the partial reinforcement acquisition effect (i.e. the faster start and run speeds produced by PR during training) and the partial reinforcement extinction effect (PREE, i.e. the greater resistance to extinction produced by PR training); these changes were due to altered performance only in the PR condition. Abolition of the PREE by the larger DB lesion occurred with 50 acquisition trials, but with 100 trials the lesion had no effect. In Experiment 4 rats were run in a double runway with food reward on CR in the second goal box, and on CR, PR or without reinforcement in the first. The larger lesion again eliminated the PREE in the first runway, but did not block the frustration effect in the second runway (i.e. the faster speeds observed in the PR condition after non-reward than after reward in the first goal box). These results are consistent with the hypothesis that DB lesions alter behavioural responses to signals of non-reward, but not to non-reward itself. They cannot be predicted from two other hypotheses: that the DB mediates responses to reward or that it subserves selective attention. Since septal and hippocampal, but not amygdalar, lesions have been reported to produced similar behavioural changes, it is proposed that the critical DB projection for the effects observed in these experiments is to the septo-hippocampal system.

  15. A Peek into a Cul-De-Sac and a Mews of Martian Dust Storm Activity: Western Hellas and Syria-Claritas Fossae During Mars Year 29

    Science.gov (United States)

    Heavens, N. G.

    2016-12-01

    Western Hellas Planitia (WHP) and the region encompassed by Syria Planum and Claritas Fossae are the main centers of textured dust storm activity in Mars's southern low to mid-latitudes. (Texture in this context refers to distinct fine structure at the cloud tops indicative of active lifting.) WHP is a well-known initiation zone for regional and global dust storm activity and often the end point of the Utopia "flushing storm" track. Syria-Claritas Fossae (SCF), too, can be a lifting center in global dust storm activity. Indeed, SCF and the area to its west was the region most denuded of dust by the Mars Year (MY) 25 global dust storm, perhaps suggesting that SCF contained the principal lifting center of the storm. Thus, if the Acidalia and Utopia storm tracks are Mars's dust storm alleys, through which dust storms pass quickly again and again; WHP might be a cul-de-sac and SCF something like a mews, where dust storm activity can enter more or less easily but may not as easily leave. In this presentation, I will focus on dust storm activity in these areas in a typical non-global dust storm year, MY 29. Synthesizing visible imagery by the Mars Color Imager (MARCI) on board Mars Reconnaissance Orbiter (MRO) and Mars Climate Sounder (MCS) also on board MRO, I will consider the climatology, morphology, texture, and vertical structure of dust storm activity in these areas in order to infer their governing dynamics. This investigation has two aims: (1) to understand why these areas are centers of textured dust storm activity; and (2) to connect the characteristics of smaller-scale dust storm activity in these regions to the underlying dynamics in order to understand the role of WHP and SCF in the dynamics of global dust storms. This work is supported by NASA's Mars Data Analysis Program (NNX14AM32G).

  16. Pharmacist supplementary prescribing: a step toward more independence?

    Science.gov (United States)

    Dawoud, Dalia; Griffiths, Peter; Maben, Jill; Goodyer, Larry; Greene, Russell

    2011-09-01

    Supplementary prescribing (SP) is a drug therapy management model implemented in the United Kingdom since 2003. It is a voluntary partnership between an independent prescriber; a supplementary prescriber, for example, nurse or pharmacist; and the patient, to implement an agreed patient-specific clinical management plan (CMP). To investigate pharmacist prescribers' views and experiences of the early stages of SP implementation. A qualitative, longitudinal study design was used. A purposive, maximum variability sample of 16 pharmacist supplementary prescribers, trained in Southern England, participated. Eleven were hospital pharmacists, owing to the overrepresentation of hospital pharmacists in the first cohort. Two semistructured interviews were conducted with each participant, at 3 and 6 months after their registration as prescribers. The Framework approach was used for data collection, management, and analysis. Three typologies of pharmacists' experiences were identified: "a blind alley", "a stepping stone" and "a good fit". Despite some delays in its implementation, SP was seen as a step forward. Some participants also believed that it improved patient care and pharmacists' integration in the health care team and increased their job satisfaction. However, there was a concern that SP, as first implemented, was bureaucratic and limited pharmacists' freedom in their decision making. Hence, pharmacists were more supportive of the then imminent introduction of a pharmacist independent prescribing (IP) role. Despite challenges, the SP role represented a step forward for pharmacists in the United Kingdom. It is possible that pharmacist SP can coexist with IP in the areas suitable for CMP use. Elsewhere, SP is likely to become more of a "stepping stone" to an IP role than the preferred model for pharmacist prescribing. Future research needs to objectively assess the outcomes of pharmacist SP, preferably in comparison with IP, to inform decision making among pharmacists

  17. Development of a simple force prediction model and consistency assessment of knee movements in ten-pin bowling

    Directory of Open Access Journals (Sweden)

    Li-Cheng Hsieh

    2012-08-01

    Full Text Available The aim of this research is to use LabVIEW to help bowlers understand theirjoint movements, forces acting on their joints, and the consistency of their knee movements while competing in ten-pin bowling. Kinetic and kinematic data relating to the lower limbs were derived from bowlers’ joint angles and the joint forces were calculated from the Euler angles using the inverse dynamics method with Newton-Euler equations. An artificial-neural-network (ANN-based data-driven model for predicting knee forces using the Euler angles was developed. This approach allows for the collection of data inbowling alleys without the use of force plates. Correlation coefficients were computed after ANN training and all values exceeded 0.9. This result implies a strong correlation between the joint angles and forces. Furthermore, the predicted 3D forces (obtained from ANN simulations and the measured forces (obtained from force plates via the inverse dynamics method are strongly correlated. The agreement between the predicted andmeasured forces was evaluated by the coefficient of determination (R2, which reflects the bowler’s consistency and steadiness of the bowling motion at the knee. The R2 value was beneficial in assessing the consistency of the bowling motion. An R2 value close to 1 implies a more consistent sliding motion. This research enables the prediction of the forceson the knee during ten-pin bowling by ANN simulations using the measured knee angles. Consequently, coaches and bowlers can use the developed ANN model and the analysis module to improve bowling motion.

  18. The Hutong effect: informal social control and community psychology in Beijing.

    Science.gov (United States)

    Emery, Clifton R; Wu, Shali; Raghavan, Ramesh

    2015-04-01

    Nearly 2.4 million Beijing residents experience intimate partner violence (IPV) annually. Of these 2.4 million, over 800 000 are injured by IPV; more than 300 000 are injured badly enough to require medical attention. Informal social control exerted by neighbours in communities with high levels of family-community integration (like those made up of residents of traditional courtyard house-and-alley Beijing neighbourhoods called 'Hutongs') may protect against IPV injury compared with apartment dwellers. We tested the protective effects of informal social control and Hutong residence in a randomly selected, three-stage cluster sample of Beijing families reporting IPV. Informal social control of IPV (ISC_IPV) was measured using two 7-question Likert scales developed by the first author. Interviewers were given detailed instructions on how to classify neighbourhoods as Hutong-style or not. We used a Sobel test to examine whether the Hutong effect was mediated by informal social control. The initial sample was of 506 families. Analyses were carried out on 113 families who reported any IPV in the last year. Random effects regression models showed that both acts of informal social control and Hutong residence were associated with less IPV injury. However, the protective finding for Hutong residence was not explained by informal social control, collective efficacy, characteristics of the IPV or demographic characteristics of respondents and households. The unique protective association with Hutong residence suggests that the benefits of community life remain insufficiently theorised and understood. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  19. Effects of ractopamine hydrochloride on growth performance, carcass characteristics, and physiological response to different handling techniques.

    Science.gov (United States)

    Hagenmaier, J A; Reinhardt, C D; Ritter, M J; Calvo-Lorenzo, M S; Vogel, G J; Guthrie, C A; Siemens, M G; Lechtenberg, K F; Rezac, D J; Thomson, D U

    2017-05-01

    Feedlot cattle ( = 128; BW = 549 ± 60 kg) were used to evaluate the effects of ractopamine hydrochloride (RAC) on growth performance, physiological response to handling, and mobility during shipment for slaughter in a study utilizing a split-plot design with a 2 × 2 factorial arrangement of treatments: 1) diet (CON [no β-adrenergic agonist] vs. RAC [400 mg·animal·d ractopamine hydrochloride for 28 d]) and 2) handling intensity (HI; low-stress handling [LSH; cattle moved at a walking pace with no electric prod use] vs. high-stress handling [HSH; cattle moved at a minimum of a trot and an electric prod applied while in the alley for posthandling restraint and during loading for shipment to the abattoir]). Cattle fed RAC tended to have greater ADG and G:F ( = 0.06), and had greater HCW and LM area ( = 0.04). The HI treatments were applied on the day after the 28-d growth performance period. Blood samples were collected before HI treatment (baseline), after HI treatments (POSTHAND), after transport to the abattoir (POSTTRANS), and during exsanguination at slaughter. A diet × HI interaction ( = 0.01) was observed in the change in cortisol from baseline to POSTTRANS, and there tended ( ≤ 0.07) to be diet × HI interactions for the change in epinephrine from baseline to POSTHAND and for the change in creatine kinase (CK) from baseline to POSTTRANS. Feeding RAC and HSH both increased the change from baseline to POSTHAND in norepinephrine and pH ( ≤ 0.05). The HSH cattle also had greater changes from baseline to POSTHAND in blood HCO, base excess, partial pressure of CO, lactate, cortisol, and glucose ( ≤ 0.01). Ractopamine and HSH both produced greater increases in CK concentrations from baseline to slaughter ( < 0.01). Mobility was not affected by RAC at the feedlot or following an average 6-h lairage ( ≥ 0.43). This study confirms RAC improves growth performance and suggests metabolic acidosis, a precursor to fatigued cattle syndrome, develops in cattle

  20. Effects of ractopamine administration and castration method on the response to preslaughter stress and carcass and meat quality in pigs of two Piétrain genotypes.

    Science.gov (United States)

    Rocha, L M; Bridi, A M; Foury, A; Mormède, P; Weschenfelder, A V; Devillers, N; Bertoloni, W; Faucitano, L

    2013-08-01

    The objective of this study was to evaluate the effects of ractopamine supplementation, castration method, and their interaction on the behavioral and physiological response to preslaughter stress and carcass and meat quality of 2 Piétrain genotypes. A total of 1,488 male pigs (115 ± 5 kg BW) were distributed according to a 2 × 2 × 2 factorial arrangement of treatments. The first factor was ractopamine supplementation with 2 groups of pigs (376 and 380 pigs each) receiving 7.5 mg/kg of ractopamine (RAC) or not (NRAC) in their diet during the last 28 d of the finishing period. The second factor was castration method, with 744 surgical castrates (SC) and 744 immunized males (IM), and the third factor was the genotype with 2 crossbreeds containing 50% (genotype A, GA; n = 744) or 25% (genotype B, GB; n = 744) Piétrain genetics. Surgical castration took place at 2 d of age, whereas immunization against gonadotropin-releasing factor (GnRF) was performed through 2 subcutaneous injections of GnRF analog (Improvest, 2 mL) at 10 and 4 wk before slaughter. At loading more vocal stimulation was needed by the handler to drive GB pigs forward through the farm alley (P = 0.01) and RAC-fed GB pigs through the ramp (P = 0.02). Feeding RAC to IM increased the number of fights in lairage compared with SC (P = 0.03). Feeding RAC shortened fighting bouts compared with NRAC pigs (P = 0.05). The SC-GA pigs showed a greater gastrointestinal tract temperature during unloading (P = 0.05) and lairage time (P = 0.03). Blood creatine kinase (CK) concentrations were greater (P = 0.04) in SC compared with IM, and no difference was found in the concentrations of stress hormones in urine collected postmortem. Dressing yield was greater (P = 0.01) in RAC and SC-GB pigs. Carcasses from RAC pigs and IM were leaner than those from NRAC and SC pigs (P ractopamine, as it seems to promote production of lean carcasses without compromising animal welfare and pork quality.

  1. THE INVESTMENT MODEL OF THE CONSTRUCTION OF PUBLIC OBJECTS

    Directory of Open Access Journals (Sweden)

    Reperger Šandor

    2009-11-01

    Full Text Available One of the possible models of the construction and use of sports objects, especi- ally indoor facilities (sports centres, halls, swimming pools, shooting alleys and others is the cooperation of the public and private sector, by the investment model of PPP (Pu- blic-Private Partnership. PPP (Public-Private Partnership construction is the new form of securing civil works, already known in the developed countries, in which the job of planning, construc- tion, functioning and financing is done by the private sector – in the scope of a precisely elaborated cooperation with the state. The state engages the private sector for the administering of the civil works. By public adverstisements and contests they will find the investors who accept the administe- ring of certain public works by themselves or with the help of project partners with their own resources (with 60-85% of bank loans, secure the conditions for conducting certain services (by using the objects, halls, etc until the expiration of the agreed deadline. The essence of PPP construction is the fact that an investor from the private sec- tor, chosen through a contest, realizes the project using its own means. The object beco- mes the property of the investor and it secures the regular functioning of the object with exclusive rights. The income from the functioning belongs to the investor, in return the costs of the functioning of the object, the upkeep, as well as the costs of the personnel and public utilities are the responsibility of the investor. The public use of the object is realised by the means that the authorised ministry and the partner from the contest in an agreement of the realization and functioning of the object accurately define the time of maintenance and the duration of the services on the behalf of social interest. From the time specified in the agreement the investor doesn’t charge precisely defined users for general and specific services. As Sebia, with all its

  2. Piloting a 'spatial isolation' index: the built environment and sexual and drug use risks to sex workers.

    Science.gov (United States)

    Deering, Kathleen N; Rusch, Melanie; Amram, Ofer; Chettiar, Jill; Nguyen, Paul; Feng, Cindy X; Shannon, Kate

    2014-05-01

    Employing innovative mapping and spatial analyses of individual and neighbourhood environment data, we examined the social, physical and structural features of overlapping street-based sex work and drug scenes and explored the utility of a 'spatial isolation index' in explaining exchanging sex for drugs and exchanging sex while high. Analyses drew on baseline interview and geographic data (January 2010-October 2011) from a large prospective cohort of street and off-street sex workers (SWs) in Metropolitan Vancouver and external publically-available, neighbourhood environment data. An index measuring 'spatial isolation' was developed from seven indicators measuring features of the built environment within 50m buffers (e.g., industrial or commercial zoning, lighting) surrounding sex work environments. Bivariate and multivariable logistic regression was used to examine associations between the two outcomes (exchanged sex for drugs; exchanged sex while high) and the index, as well as each individual indicator. Of 510 SWs, 328 worked in street-based/outdoor environments (e.g., streets, parks, alleys) and were included in the analyses. In multivariable analysis, increased spatial isolation surrounding street-based/outdoor SWs' main places of servicing clients as measured with the index was significantly associated with exchanging sex for drugs. Exchanging sex for drugs was also significantly positively associated with an indicator of the built environment suggesting greater spatial isolation (increased percent of parks) and negatively associated with those suggesting decreased spatial isolation (increased percent commercial areas, increased count of lighting, increased building footprint). Exchanging sex while high was negatively associated with increased percent of commercial zones but this association was removed when adjusting for police harassment. The results from our exploratory study highlight how built environment shapes risks within overlapping street-based sex

  3. Piloting a ‘Spatial Isolation’ Index: The Built Environment and Sexual and Drug Use Risks to Sex Workers

    Science.gov (United States)

    Deering, Kathleen N; Rusch, Melanie; Amram, Ofer; Chettiar, Jill; Nguyen, Paul; Feng, Cindy X; Shannon, Kate

    2014-01-01

    Background Employing innovative mapping and spatial analyses of individual and neighborhood environment data, we examined the social, physical and structural features of overlapping street-based sex work and drug scenes and explored the utility of a ‘spatial isolation index’ in explaining exchanging sex for drugs and exchanging sex while high. Methods Analyses drew on baseline interview and geographic data (Jan/10-Oct/11) from a large prospective cohort of street and off-street sex workers (SWs) in Metropolitan Vancouver and external publically-available, neighborhood environment data. An index measuring ‘spatial isolation’ was developed from seven indicators measuring features of the built environment within 50m buffers (e.g. industrial or commercial zoning, lighting) surrounding sex work environments. Bivariate and multivariable logistic regression was used to examine associations between the two outcomes (exchanged sex for drugs; exchanged sex while high) and the index, as well as each individual indicator. Results Of 510 SWs, 328 worked in street-based/outdoor environments (e.g. streets, parks, alleys) and were included in the analyses. In multivariable analysis, increased spatial isolation surrounding street-based/outdoor SWs’ main places of servicing clients as measured with the index was significantly associated with exchanging sex for drugs. Exchanging sex for drugs was also significantly positively associated with an indicator of the built environment suggesting greater spatial isolation (increased percent of parks) and negatively associated with those suggesting decreased spatial isolation (increased percent commercial areas, increased count of lighting, increased building footprint). Exchanging sex while high was negatively associated with increased percent of commercial zones but this association was removed when adjusting for police harassment. Conclusions The results from our exploratory study highlight how built environment shapes risks

  4. Embedding With Scientists Results In Better Understanding Of How Science Is Really Done, More Human Stories, And More Effective Communication About Controversial Topics.

    Science.gov (United States)

    Haines-Stiles, G.

    2015-12-01

    Until recently much science communication focused on press conferences and results, "Eureka"-moments issued from podiums. Recent documentaries, however, such as PARTICLE FEVER and THE YEAR OF PLUTO go behind the scenes to show long years of effort, and occasional failures, revealing a more honest—and more engaging—picture of how science is actually done. Audiences respond when researchers show a more human face, and candid moments of stress and exhaustion as well as exhilaration make eventual results more meaningful. This presentation will offer evidence that this approach is also effective on contested topics such as climate change, where long-term relationships between journalists and researchers can help structure communications that avoid distracting controversies. A cameraman spends a full week with ornithologist George Divoky on remote Cooper Island, Alaska: the resulting video podcast informs a stage play in London, and George goes on the road with POLAR-PALOOZA across America and internationally, sharing stories about the birds he studies and the polar bears he has to increasingly avoid, as climate change brings them onshore in search of food. POLAR-PALOOZA also introduced Richard Alley and other Arctic and Antarctic scientists to a team of producers and directors, resulting in a 3-part PBS series and museum outreach that is able to present climate change science in an authoritative and apolitical way. That leads, in turn, to leading researchers including video and more visually-dynamic approaches in communicating their work to the public. An upcoming public television series, THE CROWD & THE CLOUD, will devote one program to insights about climate change gained over decades of interaction between producers and scientists. Many mainstream media outlets have cut back on science coverage and released their dedicated "beat" reporters. However a wealth of new channels offer venues for this approach, and falling prices for high quality cameras and editing

  5. Cow preference and usage of free stalls compared with an open pack area.

    Science.gov (United States)

    Fregonesi, J A; von Keyserlingk, M A G; Weary, D M

    2009-11-01

    Free-stall housing systems are designed to provide a comfortable and hygienic lying area, but some aspects of stall design may restrict usage by cows. The aim of this study was to compare free-stall housing with a comparable lying area (open pack) without stall partitions. We predicted that cows would spend more time lying down and standing in the bedded area when provided access to an open pack than when in free stalls. We also predicted that cows would spend less time standing outside of the lying area and less time perching with the front 2 hooves in the lying area when using the open pack. Groups (n = 8) of 12 cows each were provided access to either the open pack or stalls. After a 7-d adaptation period, each group was tested sequentially in the 2 treatments for 3 d each. This no-choice phase was followed by an 8-d choice phase during which cows had simultaneous access to both treatments. During the no-choice phase, cows spent more time lying down (13.03 +/- 0.24 vs. 12.48 +/- 0.24 h/d) and standing with all 4 hooves in the bedded area (0.96 +/- 0.12 vs. 0.41 +/- 0.12 h/d) of the open pack than in the stalls. During the choice phase, cows spent more time lying down (7.20 +/- 0.29 vs. 5.86 +/- 0.29 h/d) and standing with all 4 hooves in the bedded area (0.58 +/- 0.07 vs. 0.12 +/- 0.07 h/d) of the open pack than in the stalls. In both the no-choice (1.66 +/- 0.24 vs. 0.55 +/- 0.24 h/d) and choice (0.55 +/- 0.07 vs. 0.29 +/- 0.07 h/d) phases, cows spent more time standing with just 2 hooves in the stalls than in the open pack. In conclusion, cows spent more time lying and standing with all 4 hooves in the bedded open pack than in the stalls. Additionally, cows spent more time standing in the alley and standing with just the front 2 hooves on the bedding in the stalls than in the bedded open pack; increased standing time on wet concrete is a known risk factor for lameness.

  6. Architectures de la petite industrie urbaine : l’exemple des Lilas (Seine-Saint-Denis

    Directory of Open Access Journals (Sweden)

    Nicolas Pierrot

    2007-03-01

    Full Text Available Les usines et les ateliers artisanaux repérés sur le territoire de la commune des Lilas ont été construits au cours du XXe siècle. A la différence de La Plaine-Saint-Denis, de ses industries lourdes, notamment chimiques et métallurgiques, à fortes emprises et génératrices d'emplois exigeant peu de qualification, Les Lilas accueillent à partir de la seconde moitié du XIXe siècle, à l'image des autres communes bordant Paris à l’est, des activités diversifiées recourant souvent à une main-d'œuvre qualifiée. Les entreprises, installées en grand nombre, sont ici disséminées en ateliers discrets : l'activité de production s'affirme peu, aux Lilas, par le décor. L’étude morphologique et architecturale permet de suivre l’évolution des ateliers et des usines, au fond des cours, le long des sentes, parfois sur la rue, et de comprendre les modalités de leur inscription dans le tissu urbain.The factories and artisans’ workshops surveyed in the suburban town of Les Lilas were built essentially during the XXth century. Unlike the town of La Plaine-Saint-Denis, whose heavy industry - namely chemical and metallurgical - generated a large unskilled workforce, Les Lilas attracted, from the second half of the XIXth century onward, numerous and varied industries that hired skilled workers. These companies were disseminated throughout the town in discreet workshops : ornate factories are not a "Lilasian" tradition. A morphological and architectural study allows us to follow the evolution of the workshops and factories found in back courtyards, along alleys or sometimes more visibly located, and to understand the different ways they wove themselves into the urban fabric of Les Lilas.

  7. Balanço do nitrogênio e fósforo em solo com cultivo orgânico de hortaliças após a incorporação de biomassa de guandu Nitrogen and phosphorus balance in soil with organic cultivation of legumes after incorporation of pigeonpea biomass

    Directory of Open Access Journals (Sweden)

    Sandra Maria Campos Alves

    2004-11-01

    Full Text Available Os objetivos deste trabalho foram avaliar os efeitos de faixas de guandu (Cajanus cajan e da incorporação da biomassa proveniente de sua poda na fertilidade do solo e na produtividade de três hortaliças sob cultivo orgânico. O delineamento usado foi de blocos casualizados completos em esquema de parcelas subsubdivididas com três repetições. As produtividades de beterraba, cenoura e feijão-de-vagem não foram afetadas pelos tratamentos. Nas parcelas onde não houve incorporação da biomassa de guandu, o balanço de nitrogênio no sistema foi negativo, ao passo que com a incorporação, esse balanço foi positivo. Embora tenha ocorrido balanço positivo para o fósforo nas parcelas sem a incorporação de biomassa de guandu, houve um aumento significativo na absorção desse elemento pelas hortaliças quando o material foi incorporado. O sistema de cultivo em aléias de guandu pode representar uma prática vantajosa para os produtores orgânicos, por contribuir na manutenção da fertilidade do solo.The objectives of this study were to evaluate the efficiency of pigeonpea (Cajanus cajan biomass incorporation to the soil as well as the effect of presence or absence of pigeonpea hedgerows on soil fertility and productivity of three vegetables, beet, carrot and dwarf green bean. Samples were randomly taken in a block design with three replications for each crop. In the field, no other fertilization treatment was applied. In plots without biomass incorporation, nitrogen showed negative balance, whereas in the field with biomass incorporation a high positive N-balance was found. Concerning phosphorus, positive balances were determined in plots without biomass incorporation, however, the uptake of P increased significantly after biomass incorporation in all crops used. The results indicate that pigeonpea alley cropping system may represent an advantageous option for organic farmers to maintain or to improve soil fertility.

  8. Sustaining Biodiversity and Income against Climate Change through Food Value Chain System by the Small-Holder Farmers in Southern Nigeria

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    Asadu Charles Livinus Anija

    2016-11-01

    Full Text Available Biodiversity and sustainable income are very necessary in ecosystem stability. The food value chain (FVC introduced in Nigeria to transform agriculture is commendable because through the system farmers receive various incentives as highly subsidized inputs from government and loans of low interest rates from designated Agricultural Banks and Central Bank. However, the system encourages specialization in the production of the reference crops but intercropping and mixed cropping systems practiced by most small-holder farmers because of its inherent advantages is de-emphasized or completely abandoned. This paper presents the results of two surveys of sole pepper and maize growers in 2015 and 2016 respectively as affected by sudden stoppage of rainfall in Nsukka area. The analyses showed that on the average > 70 % of the pepper farmers lost ≈ 65 % of their pepper fields while ≈ 57 % of the maize fields were lost. For a substitute intercropping system, plantain yield data from plantain plus moringa intercrop trials carried out in 2014 and 2015 were analyzed and projected to incorporate a food crop within inter-alleys. The mean plantain yields from the trials were 20 kg plant-1 for fresh bunch and 7 suckers stand-1. Based on a 6 m x 5 m (≈330 plants ha-1 spacing and the 2016 prices of bunches and suckers, these yields translated to a minimum net income per annum of N 1 320 000.00 (N 330 000.00 from bunches and N 990 000.00 from 6 suckers (net stand-1. Proceeds from the food crop, moringa seed and leaf extracts used as liquid fertilizer took care of the cost of other inputs and cultural practices. The inter-row spacing of 6 m allows mechanical cultivation of any food crop by the farmer. This system was considered a reliable insurance against climate change and pest insurgence and can be adopted by farmers in the entire southern Nigeria because both plantain and moringa can do very well in the subregion.

  9. Las aporías de la visión en la novelística de Manuel Puig

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    Geneviève Fabry

    2016-03-01

    Full Text Available En este artículo, se estudia la naturaleza fundamentalmente paradójica del objeto y sobre todo del acto de la visión en la obra novelística del escritor argentino Manuel Puig (1932-1990. El análisis contrastado de la representación del cuerpo en Boquitas pintadas y El beso de la mujer araña permite subrayar la existencia de una dialéctica entre no-representación y presencia del personaje. En segundo lugar, el análisis de los personajes obsesionados por el ansia de ver y saber pone de manifiesto el callejón sin salida que representa la pulsión "voyeurista" (Silvia, en Cae la noche tropical mientras que el descubrimiento de la existencia de una "verdad" arraigada en la aceptación de una no-visión (Ana en Pubis angelical abre un camino hacia el autoconocimiento y la reconciliación con uno mismo. En conclusión, la omnipresencia de la imagen y de la visión en el universo puigiano no es sino la señal paradójica de una invitacion sutil pero firme al abandono del ansia de dominio que encierra toda voluntad de ver y saber.   This article examines the fundamentally paradoxical nature of the object, and above all, the act of vision in the fiction of the Argentine Manuel Puig (1932-1990. A contrastive analysis of body representation in Boquitas Pintadas and in El Beso de la Mujer Araña, permits to underline the existence of a dialectical process between presence and non-representation of characters. Furthermore, tha analysis of characters obsessed by the crave to see y know makes manifest a blind alley suggested by the acceptance of a non-vision (Ana, in Pubis Angelical, opens the way to self-knowledge and self-acceptance. In conclusion, the omnipresence of image and vision in Puig's universe is nothing but a paradoxical beckoning to a subtle but firm invitation to give up the desire for dominance involved in the acts of the will to see and know.

  10. Simulación de los cambios de carbono orgánico del suelo en sistema de cultivo con higuerilla por el modelo RothC Simulation of soil organic carbon changes in crop systems with castor bean using the RothC model

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    Lucila González Molina

    2012-11-01

    Full Text Available El objetivo del presente trabajo fue la simulación de los cambios del carbono orgánico del suelo (COS, por el modelo RothC, en razón del cambio de uso de suelo del sistema tradicional - asociación maíz-calabaza (TMC - a sistemas con higuerilla (Ricinus communis: multiestratos (MUL, callejones (CALL y monocultivo de higuerilla (HIG. Las simulaciones del COS se hicieron para las profundidades de suelo 0-20 y 0-40 cm, para el periodo de 1980-2040, considerándose como línea base al sistema TMC. Las tasas de cambio de COS estimadas con el RothC, en ambas profundidades de suelo, estuvieron en 0,5-1,2, 0,4-0,8, 0,3-0,5 y 0,04-0,1 Mg ha-1 de C por año en los sistemas HIG, MUL, CALL y TMC, respectivamente, y fueron consistentes con las reportadas en la literatura. El desempeño del RothC tuvo 89% de eficiencia (EF, con R²=0,9, lo que muestra que este modelo puede usarse con información temporal del COS escasa, información de la historia de uso de suelo y mediciones de la entrada de residuos vegetales aéreos y subterráneos en el suelo.The objective of this work was to simulate, by the RothC model, the changes in soil organic carbon (SOC caused by changes of land use - from the traditional maize-squash (TMC association to systems with castor bean (Ricinus communis: multilayer (MUL, alleys (CALL and monoculture (HIG. SOC simulations were performed for 0-20 and 0-40 cm soil depths, for the period 1980-2040, considering the TMC system as the base line. SOC change rates estimated with RothC, for both soil depths, were 0.5-1.2, 0.4-0.8, 0.3-0.5 and 0.04-0.1 Mg ha-1 C per year in the HIG, MUL, CALL and TMC systems, respectively, and were consistent with those reported in the literature. RothC perfomance had 89% efficiency (EF and R² = 0.9, which shows that this model can be used with scarce SOC temporal information, information on the history of land use, and with input measurements of aerial and underground plant residues in the soil.

  11. Soil Carbon Stocks in Two Hybrid Poplar-Hay Crop Systems in Southern Quebec, Canada

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    Kiara Winans

    2014-08-01

    yields in the middle of alleys as in the agricultural system. Nine years of TBI practices did not produce significant gains in soil C and N stocks in the 0–30 cm layer, indicating that the total C budget, including C sequestered in trees and unharvested components (litterfall and roots, must be assessed to determine the long-term profitability of TBI systems in Canada.

  12. High organic inputs explain shallow and deep SOC storage in a long-term agroforestry system – combining experimental and modeling approaches

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    R. Cardinael

    2018-01-01

    Full Text Available Agroforestry is an increasingly popular farming system enabling agricultural diversification and providing several ecosystem services. In agroforestry systems, soil organic carbon (SOC stocks are generally increased, but it is difficult to disentangle the different factors responsible for this storage. Organic carbon (OC inputs to the soil may be larger, but SOC decomposition rates may be modified owing to microclimate, physical protection, or priming effect from roots, especially at depth. We used an 18-year-old silvoarable system associating hybrid walnut trees (Juglans regia  ×  nigra and durum wheat (Triticum turgidum L. subsp. durum and an adjacent agricultural control plot to quantify all OC inputs to the soil – leaf litter, tree fine root senescence, crop residues, and tree row herbaceous vegetation – and measured SOC stocks down to 2 m of depth at varying distances from the trees. We then proposed a model that simulates SOC dynamics in agroforestry accounting for both the whole soil profile and the lateral spatial heterogeneity. The model was calibrated to the control plot only. Measured OC inputs to soil were increased by about 40 % (+ 1.11 t C ha−1 yr−1 down to 2 m of depth in the agroforestry plot compared to the control, resulting in an additional SOC stock of 6.3 t C ha−1 down to 1 m of depth. However, most of the SOC storage occurred in the first 30 cm of soil and in the tree rows. The model was strongly validated, properly describing the measured SOC stocks and distribution with depth in agroforestry tree rows and alleys. It showed that the increased inputs of fresh biomass to soil explained the observed additional SOC storage in the agroforestry plot. Moreover, only a priming effect variant of the model was able to capture the depth distribution of SOC stocks, suggesting the priming effect as a possible mechanism driving deep SOC dynamics. This result questions the potential of soils to

  13. High organic inputs explain shallow and deep SOC storage in a long-term agroforestry system - combining experimental and modeling approaches

    Science.gov (United States)

    Cardinael, Rémi; Guenet, Bertrand; Chevallier, Tiphaine; Dupraz, Christian; Cozzi, Thomas; Chenu, Claire

    2018-01-01

    Agroforestry is an increasingly popular farming system enabling agricultural diversification and providing several ecosystem services. In agroforestry systems, soil organic carbon (SOC) stocks are generally increased, but it is difficult to disentangle the different factors responsible for this storage. Organic carbon (OC) inputs to the soil may be larger, but SOC decomposition rates may be modified owing to microclimate, physical protection, or priming effect from roots, especially at depth. We used an 18-year-old silvoarable system associating hybrid walnut trees (Juglans regia × nigra) and durum wheat (Triticum turgidum L. subsp. durum) and an adjacent agricultural control plot to quantify all OC inputs to the soil - leaf litter, tree fine root senescence, crop residues, and tree row herbaceous vegetation - and measured SOC stocks down to 2 m of depth at varying distances from the trees. We then proposed a model that simulates SOC dynamics in agroforestry accounting for both the whole soil profile and the lateral spatial heterogeneity. The model was calibrated to the control plot only. Measured OC inputs to soil were increased by about 40 % (+ 1.11 t C ha-1 yr-1) down to 2 m of depth in the agroforestry plot compared to the control, resulting in an additional SOC stock of 6.3 t C ha-1 down to 1 m of depth. However, most of the SOC storage occurred in the first 30 cm of soil and in the tree rows. The model was strongly validated, properly describing the measured SOC stocks and distribution with depth in agroforestry tree rows and alleys. It showed that the increased inputs of fresh biomass to soil explained the observed additional SOC storage in the agroforestry plot. Moreover, only a priming effect variant of the model was able to capture the depth distribution of SOC stocks, suggesting the priming effect as a possible mechanism driving deep SOC dynamics. This result questions the potential of soils to store large amounts of carbon, especially at depth. Deep

  14. INFORMATION TECHNOLOGIES IN INSURANCE SALES SUPPORT

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    Stofor Ovidiu-Ilie

    2012-07-01

    Full Text Available Insurance system in Romania is carried out with a constant natural activity, evolving quite honorably these times. This is largely due to the difficulty with which insurance is sold in normal economic conditions when it comes to prosperity. Although psychologists, led by Maslow believes that the protection needs are basic needs, along with the physiological one, on the priority list regarding procurement, insurance needs are for some Romanians, of minimum or no importance, so that they are either pushed to the bottom of the list, or even, as it most often happens, they are non existent. Current economic conditions and climate, urges caution on most fields, especially in terms of individual properties, including, how somewhat forced, life and physical integrity which are still considered property, if this aspect is not debated in terms of Christian or other religious dogma. In other words, many Romanians see insurance as a product that “is not up their alley” including it in the luxury category. Furthermore, the media shows, sometimes amplify certain cases of doubt in relations between insurance company - customer. Appropriate marketing, allied with the information technology can improve the complete relationship between the two entities - the offeror and the consumer. Through this study we aim to identify important issues that facilitate the sale of insurance, using information technology, given that the sales of these financial products through the "ancestral" methods are effective but not very efficient. We will follow, byanchoring to the current reality, the insurance utility and how to use information technologies in support of marketing (sales. The study itself was done by observing the results in practical work, from an insurance agency, but also related to what the literature offers. Because this study is currently underway, there are certainly some limitations of accuracy of results, which are adjusted "on the fly". Realizing

  15. Dairy cow preferences for soft or hard flooring when standing or walking.

    Science.gov (United States)

    Telezhenko, E; Lidfors, L; Bergsten, C

    2007-08-01

    Concrete is the most commonly used alley flooring in confined dairy herds because of its qualities of construction and ease of cleaning. Nevertheless, the hardness, abrasiveness, and slipperiness of concrete floors have adverse effects on animal well-being and health, and yielding rubber flooring is becoming popular as a way of improving the flooring conditions on walkways. The aim of this study was to investigate preferences of dairy cows for rubber compared with concrete flooring under the conditions of a commercial dairy farm. The study was conducted in an organic dairy herd with free-stall housing. Floor preference was tested on groups of standing cows in a 120-m2 holding pen before milking, and 1 yr later on a 12- x 3-m walkway. The holding pen and the walkway were divided lengthwise into 2 identical sections. Two types of solid rubber mats (soft and extra soft) were tested against solid concrete in the holding pen. Slatted and solid rubber mats were tested against slatted concrete in the walkway. Each floor type was tested over 4 d on the left side and 4 d on the right side of the holding pen and the walkway, respectively. Concrete flooring on both sides of the sections was tested as a control before the testing of different section materials. All observations of the distribution of cows in the sections were made from video recordings captured in association with the afternoon milking. The number of cows on each section was recorded approximately every 7 min in the holding pen, and continuously on the walkway. A significantly higher proportion of cows stood on the side with the soft and extra soft rubber mats (65.1 +/- 2.7 and 69.3 +/- 2.6%, respectively, mean +/- SEM) compared with the control distribution when only the solid concrete was available (50.9 +/- 3.9%). A significantly higher proportion of nonlame cows walked exclusively on the side with the slatted (64.5 +/- 5.4%, d 4) or solid rubber mats (68.2 +/- 5.1%, d 4) compared with controls (28.9 +/- 4

  16. Produtividade de biomassa em sistemas agroflorestais e tradicionais no Cariri Paraibano Biomass productivity in agroforestry and traditional systems in the 'Cariri Paraibano'

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    Júlio C. R. Martins

    2013-06-01

    Full Text Available As produtividades de biomassa de sistemas tradicionais (cultivos de milho e feijão, capim buffel ou palma e agroflorestais (cultivos entre fileiras de gliricídia ou maniçoba foram comparadas em experimento em parcelas subdivididas, de 2006 a 2009, em Taperoá, Paraíba. A precipitação média é de 600 mm. Nas parcelas agroflorestais as fileiras de árvores distavam 6 m, com 1 m entre árvores. No sistema tradicional, os cultivos produziram 33% mais biomassa e a biomassa de milho e feijão foi o dobro da produzida nos sistemas agroflorestais. O capim buffel foi o cultivo que mais produziu no sistema agroflorestal. No sistema tradicional os cultivos que mais produziram foram buffel e consórcio milho e feijão. A gliricídia produziu nove vezes mais biomassa de folhas, galhos finos e lenha que a maniçoba. Incluindo essas biomassas, a produtividade total nos sistemas agroflorestais foi 260% maior que nos sistemas tradicionais. Os coeficientes de variação da produtividade anual de biomassa foram menores nos sistemas agroflorestais. Portanto, a presença de árvores não só aumentou a produtividade total como conferiu maior estabilidade aos sistemas.The biomass productivity of traditional systems (corn and beans, buffel grass and prickly pear cactus and agroforestry systems (crops betwenn lines of gliricídia or maniçoba were compared in a split plot experiment, during 2006 to 2009, in Taperoá, Paraíba, Brazil. Mean annual rainfall in the region is 600 mm. The agroforestry alleys were 6 m apart with 1 m between trees. In the traditional systems, the crops produced 33% more biomass and the corn and beans double the biomass of the agroforestry systems. Buffel grass was the most productive crop in the agroforestry systems. In the traditional systems, buffel and intercrops corn and beans were the most productive crops. Gliricidia produced nine times more leaf, twig and fuel wood biomass than maniçoba. Including these biomasses the

  17. Aggregate stability and soil degradation in the tropics

    International Nuclear Information System (INIS)

    Mbagwu, J.S.C.

    2004-01-01

    Aggregate stability is a measure of the structural stability of soils. Factors that influence aggregate stability are important in evaluating the ease with which soils erode by water and/or wind, the potential of soils to crust and/or seal, soil permeability, quasi-steady state infiltration rates and seedling emergence and in predicting the capacity of soils to sustain long-term crop production. Aggregate stability of soils can be measured by the wet-sieving or raindrop techniques. A reduction in soil aggregate stability implies an increase in soil degradation. Hence aggregate stability and soil degradation are interwoven. The measures used can either be preventive or remedial. Preventive practices minimize the chances of soil degradation occurring or the magnitude or severity of the damage when the degradation manifests. These include in Nigeria, (i) manuring and mulching, (ii) planted fallows and cover crops, (iii) sustainable farming systems, (iv) adequate rotations, (v) home gardens or compound farms, (vi) alley cropping and related agro forestry systems, and (vii) chemical fertilizers which are mainly remedial measures. Because of alterations in soil properties that affect particular land uses, soils may degrade for one crop (maize rather sorghum). As long as some land use is possible soil degradation is not always an absolute concept. Decline in agricultural productivity should be evaluated in terms of inputs such as fertilizer use, water management and tillage methods. We can alleviate some types of soil degradation by use of micronutrients, inorganic fertilizers and organic residues. Soil that responds to management practices cannot be said to be degraded. Since crop growth depends on weather, degraded soils may be more sensitive to harsh weather (e.g. drought, temperature) than undegraded soils. A soil is degraded if its productivity falls below the economic threshold even under favourable weather conditions or with judicious inputs. All human

  18. PERFLUOROCARBON GAS TRACER STUDIES TO SUPPORT RISK ASSESSMENT MODELING OF CRITICAL INFRASTRUCTURE SUBJECTED TO TERRORIST ATTACKS.

    Energy Technology Data Exchange (ETDEWEB)

    SULLIVAN, T.M.; HEISER, J.; WATSON, T.; ALLWINE, K.J.; FLAHERTY, J.E.

    2006-05-06

    Development of real-time predictive modeling to identify the dispersion and/or source(s) of airborne weapons of mass destruction including chemical, biological, radiological, and nuclear material in urban environments is needed to improve response to potential releases of these materials via either terrorist or accidental means. These models will also prove useful in defining airborne pollution dispersion in urban environments for pollution management/abatement programs. Predicting gas flow in an urban setting on a scale of less than a few kilometers is a complicated and challenging task due to the irregular flow paths that occur along streets and alleys and around buildings of different sizes and shapes, i.e., ''urban canyons''. In addition, air exchange between the outside and buildings and subway areas further complicate the situation. Transport models that are used to predict dispersion of WMD/CBRN materials or to back track the source of the release require high-density data and need defensible parameterizations of urban processes. Errors in the data or any of the parameter inputs or assumptions will lead to misidentification of the airborne spread or source release location(s). The need for these models to provide output in a real-time fashion if they are to be useful for emergency response provides another challenge. To improve the ability of New York City's (NYC's) emergency management teams and first response personnel to protect the public during releases of hazardous materials, the New York City Urban Dispersion Program (UDP) has been initiated. This is a four year research program being conducted from 2004 through 2007. This paper will discuss ground level and subway Perfluorocarbon tracer (PFT) release studies conducted in New York City. The studies released multiple tracers to study ground level and vertical transport of contaminants. This paper will discuss the results from these tests and how these results can be used

  19. CHALLENGES IN SOURCE TERM MODELING OF DECONTAMINATION AND DECOMMISSIONING WASTES.

    Energy Technology Data Exchange (ETDEWEB)

    SULLIVAN, T.M.

    2006-08-01

    Development of real-time predictive modeling to identify the dispersion and/or source(s) of airborne weapons of mass destruction including chemical, biological, radiological, and nuclear material in urban environments is needed to improve response to potential releases of these materials via either terrorist or accidental means. These models will also prove useful in defining airborne pollution dispersion in urban environments for pollution management/abatement programs. Predicting gas flow in an urban setting on a scale of less than a few kilometers is a complicated and challenging task due to the irregular flow paths that occur along streets and alleys and around buildings of different sizes and shapes, i.e., ''urban canyons''. In addition, air exchange between the outside and buildings and subway areas further complicate the situation. Transport models that are used to predict dispersion of WMD/CBRN materials or to back track the source of the release require high-density data and need defensible parameterizations of urban processes. Errors in the data or any of the parameter inputs or assumptions will lead to misidentification of the airborne spread or source release location(s). The need for these models to provide output in a real-time fashion if they are to be useful for emergency response provides another challenge. To improve the ability of New York City's (NYC's) emergency management teams and first response personnel to protect the public during releases of hazardous materials, the New York City Urban Dispersion Program (UDP) has been initiated. This is a four year research program being conducted from 2004 through 2007. This paper will discuss ground level and subway Perfluorocarbon tracer (PFT) release studies conducted in New York City. The studies released multiple tracers to study ground level and vertical transport of contaminants. This paper will discuss the results from these tests and how these results can be used

  20. Physical and Mechanical Properties of Palm Oil Frond and Stem Bunch for Developing Pruner and Harvester Machinery Design

    Directory of Open Access Journals (Sweden)

    Yazid Ismi Intara

    2013-06-01

    Full Text Available A development of oil palm pruner and harvester machinery design implemented in the field still faces a problem due to the lack of effective and efficient design which is need to be solved. It was noted that in order to develop the design, an early data and information of physical and mechanical properties of palm oil frond and stem fruits is critically important. The objective of the research was to obtain the physical and mechanical properties of palm oil frond and stem in order to develop the design of pruner and harvester machinery. The result showed that tool machinery was been advantageous by the physical properties of the plant i.e. the total weight of frond and leaf which enable to support the cutting process. The average of total weight of frond and leaf was 16.8 kg. The diagonal cutting trajectory was been more advantageous because of total weight and frond shape toward to the different of the plant tissue area. The measurement result shows that cutting curve follows the time required for cutting. The comparison among cutting curve shows differences in cutting thickness or length. In this case, the thickness is linear with cutting time. Besides, those curves show differences at the height which determine the maximum value of tested material cutting resistance. Alternative solution for machinery development design is pruner-harvester for height plant below 6 m and among 6 to 12 m. For below 6 m, pruner-harvester was designed by incorporating motor as power source and cutter-disc as the knife cutter. That condition was relied on that estate which was maintenance intensively commonly used cutter-disc. Pruner-harvester above 6 m and up to 12 m was improved based on manual egrek-designed by adding fresh fruit bunch alley supply glide in order to keep the fruits still in intact form. The consideration was based on affectivity and efficiency. It also considers homogenous ecological of palm oil plant which should be maintained to reduce global

  1. The effects of low-level laser therapy on orthodontically induced root resorption.

    Science.gov (United States)

    Altan, A Burcu; Bicakci, A Altug; Mutaf, H Ilhan; Ozkut, Mahmut; Inan, V Sevinc

    2015-11-01

    The aim of this study was to evaluate the preventive and/or reparative effects of low-level laser therapy (LLLT) on orthodontically induced inflammatory root resorption (OIIRR) in rats. Thirty rats were divided into four groups (short-term control (SC), short-term laser (SL), long-term control (LC), long-term laser (LL)). In all groups, the left first molar was moved mesially for 11 days. At the end of this period, the rats in groups SC and SL were killed in order to observe the resorption lacunas and to evaluate whether LLLT had any positive effect on root resorption. The groups LC and LL were remained for a healing period of 14 days in order to observe spontaneous repair of the resorption areas and investigate whether LLLT had reparative effects on root resorption. A Ga-Al-As diode laser (Doris, CTL-1106MX, Warsaw, Poland) with a wavelength of 820 nm was used. In SL group, the first molars were irradiated with the dose of 4.8 J/cm2 (50 mW, 12 s, 0.6 J) on every other day during force application. In LL group, the irradiation period was started on the day of appliance removal and the first molars were irradiated with the dose of 4.8 J/cm2 on every other day for the next 14 days. LLLT significantly increased the number of osteoblasts and fibroblasts, and inflammatory response in SL group in comparison with SC group (P = .001). The amount of resorption did not represent any difference between the two groups (P = .16). In LL group, LLLT significantly increased the number of fibroblasts and decreased the amount of resorption in comparison with LC group (P = .001; P = .02). Both parameters indicating the reparative and the resorptive processes were found to be increased by LLLT applied during orthodontic force load. LLLT applied after termination of the orthodontic force significantly alleyed resorption and enhanced/accelerated the healing of OIIRR. LLLT has significant reparative effects on OIIRR while it is not possible to say that it definitely has a

  2. Soil physical conditions in Nigerian savannas and biomass production

    International Nuclear Information System (INIS)

    Salako, F.K.

    2004-01-01

    Nigeria is located in the tropical zone, with a vast area having savanna vegetation. This is a region that is itself diverse, necessitating a classification into derived savanna, southern Guinea savanna and northern Guinea savanna. These classifications reflect environmental characteristics such as length of growing period, which for instance is 151-180 days for the northern Guinea savanna, 181-210 days for the southern Guinea savanna and 211-270 days for the derived savanna/coastal savanna. The major soils found in the various agro-ecological zones have coarse-textured surface soil, and are low in organic matter and chemical fertility. Although, yields can be improved by addition of inorganic and organic fertilizer, this can only be sustained and assured with high soil physical qualities. Soil physical qualities can be sustained at a high level with conservation tillage and soil conservation measures. Tillage is physical manipulation of the soil. Thus, the most profound effect of tillage is in relation to soil physical properties. For socio-economic and cultural reasons, manual tillage is still widely practiced in Africa as farming is largely at subsistence level. However, there are now a number of commercial farms especially for cash crop production in many parts of Africa. Many of these are located in locations which were hitherto reserved as forest and a need for sustainable production in pertinent to maintain ecological balance. Soils with coarse texture are not often sensitive to some physical parameters while some physical parameters are more relevant in a given study than others. Sustainable crop production researches in the tropics have focused on the role of planted fallows and their spatial arrangement (e.g., as in alley cropping) for many decades. Application of soil physics in the area of food production and environmental management still lags behind other sub-disciplines of soil science, particularly soil fertility in the tropics. A great challenge is

  3. CO2 EFFLUX IN VERTISOL UNDER DIFFERENT LAND USE SYSTEMS

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    Israel Cantu Silva

    2010-01-01

    Full Text Available Determinations of CO2 efflux, soil temperature and soil-water content in vertisols were monitored at least twice a week between July 2001 and January 2002. At each sampling date, two daily measurements (at 08:00 and 14:00 h local time, named as morning and afternoon, respectively were carried out. A dynamic closed chamber with a portable system EGM employing a infrared gas analyzer (IRGA and a soil chamber (SRC-1 were used to assess soil CO2 efflux throughout the experimental period from vertisols under different land uses in northeastern Mexico: Pasture (Dichanthium annulatum, Leucaena leucocephala in an alley cropping system, a native and undisturbed shrubland plot, a Eucalyptus microtheca plantation, and a Sorghum bicolor field. Results showed for the Eucalyptus and Pasture plots a highly significant and positive linear relationship between morning and afternoon soil respiration rate and soil temperature, while no significant relationship was found between soil temperature and soil respiration for the Leucaena, Sorghum nor the Shrubland plots. Soil temperature alone explained 68% of the variation in the CO2 efflux rate in Eucalyptus and 33% in Pasture. During the study period, average morning soil respiration rates for all land uses ranged from 0.7 (October to 8.4 mmol CO2 m-2 s-1 (August, while afternoon soil respiration rates ranged from 0.6 to 14.4 mmol CO2 m-2 s-1. Average morning and afternoon soil respiration rates showed the following decreasing CO2 efflux order among the five investigated land uses: Pasture>Shrubland>Leucaena>Eucalyptus>Sorghum; thus, the pasture plot showed the highest average morning and afternoon soil respiration rates; 3.5 and 5.0 mmol CO2 m-2 s-1, respectively. In contrast, the Sorghum plot showed the lowest average morning (1.9 and afternoon (2.5 mmol CO2 m-2 s-1 soil respiration rates. The Pasture and Shrubland, which are common livestock management practices in this region, contribute to more CO2 emissions

  4. Comparison of three interview methods on response pattern to sensitive and non-sensitive questions.

    Science.gov (United States)

    Akbar Haghdoost, Ali; Reza Baneshi, Mohammad; Eybpoosh, Sana; Khajehkazemi, Razieh

    2013-06-01

    To get more precise responses when gathering information about sensitive topics such as drug use, it is important to use the most optimal method. This study was carried out to address the impact of three interview methods (street-based, household, and telephone interviews) on response pattern to sensitive and non-sensitive questions in terms of participation, disclosure and discontinuing rates. We selected three culturally diverse major cities of Iran. Then, we randomly selected 300 subjects, 100 for each type of interview, from each major city (899 in total). For street-based interviews only pedestrians who were walking alone were recruited, for household interviews only one individual from each house participated (3-4 houses in each alley were selected), and for telephone interviews we selected phone numbers using a random number list. We asked five non-sensitive and five sensitive (related to drug use and sexual contact among their personal network) questions. For telephone and household interviews, relative to street-based interviews, participants were less likely to disclose alcohol and drug-related behaviors (Adjusted OR = 0.76; 95% CI: 0.60- 0.97) and sexual behaviors among their network (Adjusted OR telephone/street-based = 0.64; 95% CI: 0.39- 1.07 and Adjusted OR household/ street-based = 0.56; 95% CI: 0.33- 0.95). We found that participants who were interviewed via the telephone were more likely (Adjusted OR = 1.24) and those who were interviewed at home were less likely (Adjusted OR = 0.86) to report non-sensitive information compared to participants who were interviewed on the street; however, these findings were not statistically significant. The largest participation rate and the least discontinuation rate were observed for household interviews. It seems that the methods of interview effect response to both sensitive and non-sensitive questions. We believe that for street-based interviews, respondents may disclose more sensitive information than

  5. Prevalence of lameness and associated risk factors in Canadian Holstein-Friesian cows housed in freestall barns.

    Science.gov (United States)

    Solano, L; Barkema, H W; Pajor, E A; Mason, S; LeBlanc, S J; Zaffino Heyerhoff, J C; Nash, C G R; Haley, D B; Vasseur, E; Pellerin, D; Rushen, J; de Passillé, A M; Orsel, K

    2015-10-01

    Lameness is a severe welfare problem and a production-limiting disease in dairy farming. The objectives of this study were to determine prevalence of lameness and investigate cow- and herd-level factors associated with lameness in dairy cows housed in freestall barns in 3 Canadian provinces. A purposive sample of 40 Holstein-Friesian cows was selected from each of 141 dairy farms in Québec, Ontario, and Alberta. In total, 5,637 cows were scored once for lameness (presence of limping when walking). Data collected included information on individual cows (hock lesions, claw length, body condition score, parity, days in milk, and milk production), management practices (floor and stall cleaning routine, bedding routine, and footbath practices), and facility design (stall dimensions, stall base and bedding type, width of feed alley, flooring type, and slipperiness) hypothesized to be risk factors for lameness. Multilevel mixed logistic regression models were constructed (including farm as a random effect and province as a fixed effect). Herd-level lameness prevalence ranged from 0 to 69% (mean = 21%). Lameness prevalence increased with increasing parity; compared with first parity, cows in parity 2, 3, and ≥ 4 had 1.6, 3.3, and 4 times, respectively, higher odds of being lame. Furthermore, the odds of lameness were 1.6 times greater in cows with low body condition score (≤ 2.5) than in cows with a higher body condition score. In addition, injured hocks and overgrown claws were associated with 1.4- and 1.7-fold increased odds of being lame, respectively, whereas every 1 kg increase in daily milk production was associated with a 3% decrease in the odds of being lame. Lameness prevalence was higher in herds with ≤ 100 cows, but lower in barns with a sand or dirt stall base, or with bedding ≥ 2 cm deep. Cows exposed to very slippery floors had 2 times the odds of being lame compared with cows exposed to nonslippery floors. We attributed the wide range of lameness

  6. Protection of Landscape Values of Historical Post Military Objects - Complexes in Spatial, Urban and Architectural Planning of Polish Cities

    Science.gov (United States)

    Gawryluk, Dorota; Zagroba, Marek

    2017-12-01

    Within the borders of modern Poland there are numerous barracks units erected at the turn of the 19th and 20th centuries by the invaders from Russia, Austria and Prussia. Former barracks are a clear element of the history of the place. Historical complexes have a strong influence on the urban landscape and on building their former and contemporary identity. The analysis of functional and landscape absorption of postmodern complexes allows for their adaptation and modern use without limiting the readability of historical values. For this reason, their landscape should be protected comprehensively within the scope of subsequent exposure scales. The aim of the work is to justify the conditions of comprehensive protection of the fortified landscape of the former barracks of the former Russian partition in the landscape of contemporary Polish cities. The article contains a review of the literature on the protection, supplement and access to fortified buildings from the turn of the 19th and 20th centuries in contemporary Poland. A review of current research conducted at various academic centres in Poland, concerning the exposition of fortified buildings in the landscape, is presented. Particular attention was paid to the scales and forms of exposition, proposed for the fortifications and barracks. The paper presents justification for the protection of barracks complexes from the turn of the 19th and 20th centuries in the landscape of Polish cities of the former Russian partition area. Protection of the landscape was proposed in the following scales: superregional, landscape (panorama of the centre), urban (urban structure of the complex in the context of the urban space), architectural and landscape interiors of the complex (WAK) such as alleys, alarm squares, greenery) and detail (view of the building from the outside), interior of the building (characteristic interior spaces, e.g. home chapels, staircases). Taking account of exposures analysis of individual scales

  7. Re-Defining Traditional Bazaar Areas and Shade Structures Via Parametric Design Methods

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    Ahmet Emre Dinçer

    2017-12-01

    Full Text Available For the continuation of life, people created various equipment and goods. To create mutual benefits, they’ve exchanged the overpruduced items with different products. This has begun the shopping act. By the increased amount of transactions, a need of defined area for shopping have arisen.  For a temporary time, trading areas have been developed at different locations at a certain period. In the course of time, beside trading, these areas served as socio-cultural spaces where the human relations were established. Moreover, demand of being able to immediately access to needed goods have emerged. This situation made having a permanent trading area essential. Therefore, enclosed and permanent trade areas from bazaar, inn, bedesten, arasta to shopping malls have emerged. Next to all these trading areas, traditional bazaar areas keep being established. Nowadays, there is a need of providing some determined comfort conditions to the users for these street alley bazaars. Decreasing the effect of unfavorable weather conditions and providing supportive certain services and units (like WCs, security, cleanliness, etc. are some of them. As a fundamental solution, without disengaging the user relations with the outside, shade structures are generally provided. Shade structures can support cleaning and similar jobs by gathering and using rainwater besides its purpose of protecting the user from bad weather conditions. Application examples of these systems are gradually increasing. However, it is necessary to develop new approaches, in order to stop these proposed shade structures, become prototypes and to adapt the proposal to its environment and to increase diversity. In this study, a convenient shade structure and its alternatives, which are adapted to environmental conditions, were designed to create a sample model for other bazaar areas. In models, basically, folding design approaches were pursued. For production of these shade structure models

  8. EFFECT OF DIFFERENT COOLING SYSTEMS ON LYING TIME OF DAIRY COWS IN CUBICLES WITH SEPARATED MANURE SOLIDS BEDDING VPLYV ROZDIELNYCH SYSTÉMOV OCHLADZOVANIA NA DOBU LEŢANIA DOJNÍC USTAJNENÝCH V LEŢISKOVÝCH BOXOCH PODSTIELANÝCH SEPAROVANÝM KALOM HNOJOVICE

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    Jana LENDELOVÁ

    2012-12-01

    Full Text Available The aim of this study was to investigate the changes of lying time and other behaviour manifestations of dairy cows during usage of different cooling systems of animals. Alternative hypothesis was presumption, that the lying time of cows in lying cubicles with applied two different cooling systems are indifferent. The sprinkling system was used to animal cooling in group S in summer time. In group SV was disposable sprinkling system and diagonally rotated ventilators. Activities and the rest of animals were evaluated in 10 minute intervals using a camera system for 24 hours. Data obtained was tested by nonparametric Kruskal-Wallis one-way ANOVA and multiple comparison test for detecting of significant differences in the behaviors between groups of cows. There was found positive effect of animal enhanced cooling using sprinkling system with increased air movement by ventilators. It reflected in significant prolongation of whole lying time and shortening of time, when animals were standing. It resulted from final values of investigated behaviour manifestations of dairy cattle within 24 hour period that animals in group SV with sprinklers and ventilators lay in stalls longer than in group S with sprinklers, but without ventilators (10.76 h*d-1*cow-1 vs. 7.71 h*d-1*cow-1, P<0.001. The total time spent by lying in stalls and in alley represented in group SV 11.31 h*d-1*cow-1, and in group S 10.22 h*d-1*cow-1. Animals, from group S without ventilators, which were less cooled, were significantly more lying down in alleys (2.52 h*d-1*cow-1 vs. 0.56 h*d-1*cow-1, P<0.001.Cieľom štúdie bolo skúmanie zmeny dĺţky leţania a ďalších prejavov správania dojníc pri pouţití rôznych spôsobov ochladzovania zvierat. Alternatívnou hypotézou bol predpoklad, ţe doba leţania dojníc v leţiskách s dvomi rozdielnymi spôsobmi ochladzovania nie je rovnaká. V letnom období bol k ochladzovaniu v skupine S vyuţívaný sprchový systém, v skupine SV

  9. Iridium Ziegler-Type Hydrogenation Catalysts Made from [(1,5-COD)Ir( -O2C8H15)]2 and AlEt3: Spectroscopic and Kinetic Evidence for the Irn Species Present and for Nanoparticles as the Fastest Catalyst

    Energy Technology Data Exchange (ETDEWEB)

    Alley, W.; Hamdemir, I; Wang, Q; Frenkel, A; Li, L; Yang, J; Menard, L; Nuzzo, R; Ozkar, S; Finke, R

    2010-01-01

    Ziegler-type hydrogenation catalysts, those made from a group 8-10 transition metal precatalyst and an AlR{sub 3} cocatalyst, are often used for large scale industrial polymer hydrogenation; note that Ziegler-type hydrogenation catalysts are not the same as Ziegler-Natta polymerization catalysts. A review of prior studies of Ziegler-type hydrogenation catalysts (Alley et al. J. Mol. Catal. A: Chem. 2010, 315, 1-27) reveals that a {approx}50 year old problem is identifying the metal species present before, during, and after Ziegler-type hydrogenation catalysis, and which species are the kinetically best, fastest catalysts-that is, which species are the true hydrogenation catalysts. Also of significant interest is whether what we have termed 'Ziegler nanoclusters' are present and what their relative catalytic activity is. Reported herein is the characterization of an Ir Ziegler-type hydrogenation catalyst, a valuable model (vide infra) for the Co-based industrial Ziegler-type hydrogenation catalyst, made from the crystallographically characterized [(1,5-COD)Ir({mu}-O{sub 2}C{sub 8}H{sub 15})]{sub 2} precatalyst plus AlEt{sub 3}. Characterization of this Ir model system is accomplished before and after catalysis using a battery of physical methods including Z-contrast scanning transmission electron microscopy (STEM), high resolution (HR)TEM, and X-ray absorption fine structure (XAFS) spectroscopy. Kinetic studies plus Hg(0) poisoning experiments are then employed to probe which species are the fastest catalysts. The main findings herein are that (i) a combination of the catalyst precursors [(1,5-COD)Ir({mu}-O{sub 2}C{sub 8}H{sub 15})]{sub 2} and AlEt{sub 3} gives catalytically active solutions containing a broad distribution of Ir{sub n} species ranging from monometallic Ir complexes to nanometer scale, noncrystalline Ir{sub n} nanoclusters (up to Ir{sub {approx}100} by Z-contrast STEM) with the estimated mean Ir species being 0.5-0.7 nm, Ir{sub {approx}4

  10. Deep-C Drilling: Carbon Sequestration at Depth under Vine Crops

    Science.gov (United States)

    Holmes, Allister; Mueller, Karin; Clothier, Brent; Deurer, Markus

    2014-05-01

    Management practices designed to increase carbon sequestration via perennial tree crops, are potential tools to mitigate the consequences of climate change. Changes in orchard management could enable growers to meet eco-verification market demands for products with a low carbon footprint, and potentially exploit the emerging business opportunity in carbon storage, whilst enhancing the delivery of ecosystem services that depend on soil carbon stocks. However, there is no standard methodology to verify any potential claims of carbon storage by perennial vine crops. We developed a robust methodology to quantify carbon storage in kiwifruit orchards. Soil carbon stocks (SCS) were determined in six depth increments to 1 m depth in two adjacent kiwifruit blocks, which had been established 10 ('young') and 25 ('old') years earlier. We used a 'space-for-time' analysis. Our key results were: • The 'young' and 'old' kiwifruit block stored about 139 and 145 t C/ha to 1 m depth. Between 80-90% of the SCS were stored in the top 0.5 m, and 89-95% in the top 0.7 m. • There was no significant difference between the SCS in row and alley to a depth of 0.5 m. • A CV of 5-15% indicates that 4-10 cores are needed for 80% confidence in the estimated SCS. • We recommend separating each core into the depths 0-0.1, 0.1-0.3, 0.3-0.5 and 0.5-1 m to allow the assessment of SCS dynamics. • We detected a weak spatial pattern of the SCS only for the 'old' kiwifruit block with a range of about 3 m. A sampling bay along a vine-row should have a maximum length of 3 m. We then assessed SCS in over 60 kiwifruit orchards throughout New Zealand. They stored on average 174.9 ± 3 t C ha-1 to 1 m depth. On average, 51% of the SCS down to 1 m depth were stored in the top 0.3 m, which is the standard depth according to the Kyoto protocol. About 72% of the SCS to 1 m depth were captured when increasing the sampling depth to 0.5 m. These results underscore the necessity to analyze SCS in an orchard

  11. MOONLIGHT: A NEW LUNAR LASER RANGING RETROREFLECTOR AND THE LUNAR GEODETIC PRECESSION

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    M. Martini

    2013-12-01

    Full Text Available Since the 1970s Lunar Laser Ranging (LLR to the Apollo Cube Corner Retroreflector (CCR arrays (developed by the University of Maryland, UMD supplied almost all significant tests of General Relativity (Alley et al., 1970; Chang et al., 1971; Bender et al.,1973: possible changes in the gravitational constant, gravitational self-energy, weak equivalence principle, geodetic precession, inverse-square force-law. The LNF group, in fact, has just completed a new measurement of the lunar geodetic precession with Apollo array, with accuracy of 9 × 10−3, comparable to the best measurement to date. LLR has also provided significant information on the composition and origin of the moon. This is the only Apollo experiment still in operation. In the 1970s Apollo LLR arrays contributed a negligible fraction of the ranging error budget. Since the ranging capabilities of ground stations improved by more than two orders of magnitude, now, because of the lunar librations, Apollo CCR arrays dominate the error budget. With the project MoonLIGHT (Moon Laser Instrumentation for General relativity High-accuracy Tests, in 2006 INFN-LNF joined UMD in the development and test of a new-generation LLR payload made by a single, large CCR (100mm diameter unaffected by the effect of librations. With MoonLIGHT CCRs the accuracy of the measurement of the lunar geodetic precession can be improved up to a factor 100 compared to Apollo arrays. From a technological point of view, INFN-LNF built and is operating a new experimental apparatus (Satellite/lunar laser ranging Characterization Facility, SCF and created a new industry-standard test procedure (SCF-Test to characterize and model the detailed thermal behavior and the optical performance of CCRs in accurately laboratory-simulated space conditions, for industrial and scientific applications. Our key experimental innovation is the concurrent measurement and modeling of the optical Far Field Diffraction Pattern (FFDP and the

  12. Gust-Front and Outflow Related Waterspouts: Timely Warnings, Formation, and Impact on Public Safety

    Science.gov (United States)

    Cappucci, M.

    2013-12-01

    Massachusetts may be over a thousand miles away from the traditional "tornado alley", but as the deadly tornadoes that killed four on June 1st 2011 proved, we are not immune to such storms. Over the course of half a century or so, Massachusetts has bore witness to scores of tornadoes, including an F5 twister that touched down on June 9th 1953, resulting in the death of 94 people. Since this tornado, none other in the United States had caused as many deaths, until the Joplin, Missouri catastrophe of May 22, 2011 (161 deaths). In Massachusetts, however, storms of such destructive magnitude are generally confined to the western half of the state, as the June 1, 2011 tornadoes in South Central Massachusetts illustrated. Despite this, a recently observed trend has revealed that the eastern Massachusetts coastline may boast as many, if not more, tornadoes, albeit undocumented. On June 23rd, 2012, a strong thunderstorm produced a spectacular gust front over Boston Harbor. This gust front was associated with intense thunderstorm outflow that helped to spawn a waterspout that roared ashore in Scituate as an EF-0 tornado. This waterspout, however, developed ahead of the gust front, yet merged with the cloud structure of the outflow, hinting at a type of interaction between the thunderstorm downdraft and the waterspout. This tornado caused minor damage. A similar situation occurred in Plymouth, MA, on July 24th, when three waterspouts formed ahead of the gust front of a severe thunderstorm; one of these tempests roared ashore on White Horse Beach as an EF-0 storm, causing minor damage to the sum of a few hundred dollars. Photos taken of these spouts reveal their formation ahead of the gust front, with a downdraft/waterspout interaction similar to the situation of June 23rd. Time-lapse videography of the gust front taken moments after the dissipation of the spouts reveals a horizontally oriented vortex a few hundred meters ahead of the storm's outflow boundary. The spinning of

  13. Spatial Patterns of Long-Term Erosion Rates Beneath the Marine West Antarctic Ice Sheet: Insights into the Physics of Continental Scale Glacial Erosion from a Comparison with the Ice-Velocity Field

    Science.gov (United States)

    Howat, I. M.; Tulaczyk, S.; Mac Gregor, K.; Joughin, I.

    2001-12-01

    with the steady state deforming till model of Cuffey and Alley (1997). Therefore, we hypothesize that the erosional system beneath the WAIS, which has overridden a thick layer of erodible, Tertiary marine sediments (Studinger et al., in press), is 'transport limited' and that the horizontal gradients in ice velocity and till flux have the predominant control over spatial patterns of subglacial erosion and deposition rates. In contrast, past studies of erosional systems have concentrated on mountain glaciers that derive their debris through erosion of hard bedrock. In those cases, the erosional system may be 'production limited' because erosion rates scale with dissipation of gravitational energy, represented by the velocity-times-constant equation. Thus, this concept of a 'transport limited' system represents a deviation from past thinking regarding the dynamics of bed erosion, and may be unique to marine-based ice sheets. Using this concept as a base, we will construct more accurately parameterized models to better define the relationship between the dynamics of ice streams and the character of the sub glacial bed.

  14. Pairing Essential Climate Science with Sustainable Energy Information: the "EARTH-The Operators' Manual" experiment

    Science.gov (United States)

    Akuginow, E.; Alley, R. B.; Haines-Stiles, G.

    2010-12-01

    Social science research on the effective communication of climate science suggests that today's audiences may be effectively engaged by presenting information about Earth's climate in the context of individual and community actions that can be taken to increase energy efficiency and to reduce carbon emissions. "EARTH-The Operators' Manual" (ETOM) is an informal science education and outreach project supported by NSF, comprising three related components: a 3-part broadcast television mini-series; on-site outreach at 5 major science centers and natural history museums strategically located across the USA; and a website with innovative social networking tools. A companion tradebook, written by series presenter and Penn State glaciologist Richard Alley, is to be published by W. W. Norton in spring 2011. Program 1, THE BURNING QUESTION, shows how throughout human history our need for energy has been met by burning wood, whale oil and fossil fuels, but notes that fossil fuels produce carbon dioxide which inevitably change the composition of Earth's atmosphere. The program uses little known stories (such as US Air Force atmospheric research immediately after WW2, looking at the effect of CO2 levels on heat-seeking missiles, and Abraham Lincoln's role in the founding of the National Academy of Sciences and the Academy's role in solving navigation problems during the Civil War) to offer fresh perspectives on essential but sometimes disputed aspects of climate science: that today's levels of CO2 are unprecedented in the last 400,000 and more years; that human burning of fossil fuel is the scientifically-proven source, and that multiple lines of evidence show Earth is warming. Program 2, TEN WAYS TO KEEP TEN BILLION SMILING, offers a list of appealing strategies (such as "Get Rich and Save the World": Texas & wind energy, and "Do More with Less": how glow worms make cool light without waste heat, suggesting a role for organic LEDs) to motivate positive responses to the

  15. Quantification of methane and nitrous oxide emissions from various waste treatment facilities by tracer dilution method

    Science.gov (United States)

    Mønster, Jacob; Rella, Chris; Jacobson, Gloria; Kjeldsen, Peter; Scheutz, Charlotte

    2013-04-01

    tracer gas concentrations while another measured the nitrous oxide concentration. We present the performance of these instruments at different waste treatment facilities (waste water treatment plants, composting facilities, sludge mineralization beds, anaerobic digesters and landfills) in Denmark, and discuss the strengths and limitations of the method of the method for quantifying methane and nitrous oxide emissions from the different sources. Furthermore, we have measured the methane emissions from 10 landfills with emission rates ranging from 5 to 135 kg/h depending on the age, state, content and aftercare of the landfill. In addition, we have studied 3 waste water treatment plants, and found nitrous oxide emission of 200 to 700 g/h from the aeration tanks and a total methane emission ranging from 2 to 15 kg/h, with the primary emission coming from the sludge treatment. References Galle, B., Samuelsson, J., Svensson, B.H., and Börjesson, G. (2001). Measurements of methane emissions from landfills using a time correlation tracer method based on FTIR absorption spectroscopy. Environmental Science & Technology 35 (1), 21-25 Scheutz, C., Samuelsson, J., Fredenslund, A. M., and Kjeldsen, P. (2011). Quantification of multiple methane emission sources at landfills using a double tracer technique. Waste Management, 31(5), 1009-17 Solomon, S., D. Qin, M. Manning, R.B. Alley, T. Berntsen, N.L. Bindoff, Z. Chen, A. Chidthaisong, J.M. Gregory, G.C. Hegerl, M. Heimann, B. Hewitson, B.J. Hoskins, F. Joos, J. Jouzel, V. Kattsov, U. Lohmann, T.Matsuno, M. Molina, N. Nicholls, J.Overpeck, G. Raga, V. Ramaswamy, J. Ren, M. Rusticucci, R. Somerville, T.F. Stocker, P. Whetton, R.A.Wood and D. Wratt, 2007: Technical Summary. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA.

  16. La ergonomía organizacional y la responsabilidad social inclusiva y preactiva: Un compromiso dentro de los objetivos de la organización

    Directory of Open Access Journals (Sweden)

    Ender Carrasquero

    2014-01-01

    by the contents of Lippel (2001, Guédez (2005, Domont (1999, between others. As for social responsibility: Of the Slope (2002, Guédez (2006, Alleys (2005, between others, developing under an interpretive approach of descriptive type and not experimental design, across analysis of documents. To effects of this investigation, it is investigated on trends in the social demand of a major responsibility of the State and the organizations, examining his significance as central element in the conformation of the models of human development who form our future, dividing that exist two attitudes and two sensibilities in the human being, visions are exposed on the paper of the ergonomics as tool for the development of the proactividad and the inclusive disposition, as form incorporation of aspects of Social Responsibility in the ergonomic management organizacional. Keywords: Organizational Ergonomics; social responsibility; attitudes and sensitivities.

  17. La vente des biens nationaux à la fin du XVIIIe siècle, nouvelle donne pour la ville The sale of national assets at the end of the 18th century – a gift to the city

    Directory of Open Access Journals (Sweden)

    François Antoine

    2009-05-01

    Full Text Available À la fin de l’Ancien Régime, les villes des Pays-Bas gardaient les traits de villes médiévales sans ordre et faites d’entrelacs de rues et de ruelles. Le caractère corporatif de la production limitait la présence de grands ensembles industriels et les couvents et leurs jardins occupaient une grande partie de la superficie intra et extra muros des cités. Par ailleurs, l’Église était propriétaire d’un important parc immobilier de petites demeures adossées à des églises jusqu’aux importants refuges d’abbayes dominant dans les campagnes de vastes espaces fonciers. Durant la deuxième moitié du xviiie, les autorités habsbourgeoises menèrent une politique tendant à moderniser les villes en faisant, en autres, tomber les enceintes et en donnant une nouvelle affectation aux couvents contemplatifs supprimés. La Révolution française bouleversa ces ensembles urbains en libérant d’un coup une masse très importante de biens immobiliers qui appartenait à l’Église et en modifiant radicalement les modes de production par la suppression des corporations de métiers. La bourgeoisie principalement négociante réussi habilement tirer tous les profits de cette nouvelle donne. Cet effet d’aubaine contribua grandement à faire passer nos régions dans un nouveau stade de leur démarrage industriel.At the end of the Ancien Régime, the towns of the Netherlands retained the characteristics of medieval towns, without any order and consisting of warrens of streets and alleys. The corporative nature of production limited the presence of major industrial complexes and the monasteries and convents, together with their gardens, covered a large part of the urban areas both within and outside city walls. In addition, the church had important property holdings, ranging from small residential properties attached to churches to major abbey residences dominating vast countryside estates. During the second half of the 18th century, the

  18. Clinopyroxenite dikes crosscutting banded peridotites just above the metamorphic sole in the Oman ophiolite: early cumulates from the primary V3 lava

    Science.gov (United States)

    Ishimaru, Satoko; Arai, Shoji; Tamura, Akihiro

    2013-04-01

    Oman ophiolite is one of the well-known ophiolites for excellent exposures not only of the mantle section but also of the crustal section including effusive rocks and the underlying metamorphic rocks. In the Oman ophiolite, three types of effusive rocks (V1, V2 and V3 from the lower sequences) are recognized: i.e., V1, MORB-like magma, V2, island-arc type lava, and V3, intra-plate lava (Godard et al., 2003 and references there in). V1 and V2 lavas are dominant (> 95 %) as effusive rocks and have been observed in almost all the blocks of northern part of the Oman ophiolite (Godard et al., 2003), but V3 lava has been reported only from Salahi area (Alabaster et al., 1982). It is clear that there was a time gap of lava eruption between V1-2 and V3 based on the presence of pelagic sediments in between (Godard et al., 2003). In addition, V3 lavas are fed by a series of doleritic dikes crosscutting V2 lava (Alley unit) (Alabaster et al., 1982). We found clinopyroxenite (CPXITE) dikes crosscutting deformation structure of basal peridotites just above the metamorphic sole in Wadi Ash Shiyah. The sole metamorphic rock is garnet amphibolite, which overlies the banded and deformed harzburgite and dunite. The CPXITE is composed of coarse clinopyroxene (CPX) with minor amount of chlorite, garnet (hydrous/anhydrous grossular-andradite) with inclusions of titanite, and serpentine formed at a later low-temperature stage. The width of the CPXITE dikes is 2-5 cm (10 cm at maximum) and the dikes contain small blocks of wall harzburgite. Almost all the silicates are serpentinized in the harzburgite blocks except for some CPX. The Mg# (= Mg/(Mg + Fe) atomic ratio) of the CPX is almost constant (= 0.94-0.95) in the serpentinite blocks but varies within the dikes, highest at the contact with the block (0.94) and decreasing with the distance from the contact to 0.81 (0.85 on average). The contents of Al2O3, Cr2O3, and TiO2 in the CPX of the dikes are 0.5-2.0, 0.2-0.6, and 0

  19. Caracterização do microambiente em secção transversal de um galpão do tipo "free-stall" orientado na direção norte-sul Environment characterization in transversal direction in a free-stall housing oriented to north-south direction

    Directory of Open Access Journals (Sweden)

    Alessandro T. Campos

    2004-04-01

    Full Text Available O trabalho teve o objetivo de caracterizar o microambiente climático das baias de um galpão de confinamento para gado leiteiro, modelo "free-stall", no sentido transversal da instalação. O "free-stall" é orientado na direção norte-sul, localizado em Marechal Cândido Rondon, região Oeste do Paraná, com capacidade para abrigar 40 vacas em lactação (40 baias. Visando à determinação do Índice de Temperatura do Globo e Umidade (ITGU e da Carga Térmica de Radiação (CTR, foram instalados quatro globos negros, no centro de baias dispostas no sent ido transversal, dispondo dois globos no lado oeste e dois globos no lado leste (separados pelo corredor de alimentação. Lateralmente ao galpão, no lado leste, havia vegetação a 4 m da instalação, que promovia sombreamento nas primeiras horas do dia. Pode-se concluir que, nas primeiras horas do dia, não há diferença significativa entre os valores de ITGU e CTR encontrados, indicando que o sombreamento, devido à vegetação, foi capaz de amenizar os efeitos da radiação solar. Às 17 h 30 min, verificou-se que há ocorrência de maiores valores, tanto de ITGU quanto de CTR, nas baias localizadas no lado oeste do "free-stall".This work aimed to characterize the microclimatic conditions of the stalls of a free-stall model confinement building for dairy cattle in the transversal direction of the installation. Free-stall building was oriented to north-south direction, located in Marechal Cândido Rondon, west of Paraná State -Brazil, with a capacity of 40 dairy cows (40 stalls. In order to determine the Black-Globe-Humidity Index (BGHI and Radiant Heat Load (RHL, four black globes were installed in the center of stalls disposed in the transversal direction, disposing two globes in the west side and two globes in the east side (separated by the feed alley. At the building sidelong, east side, there was a four meter distant vegetation, that promoted shading in the first hours of the day

  20. Geomorphic signature of an Antarctic palaeo-ice stream: implications for understanding subglacial processes and grounding line retreat

    Science.gov (United States)

    Livingstone, S. J.; Jamieson, S.; Vieli, A.; O'Cofaigh, C.; Stokes, C. R.; Hillenbrand, C.

    2010-12-01

    deformation till at the grounding-line during still-stands (Alley et al. 1989), are well documented, yet poorly understood phenomena. We present evidence of four previously unreported GZWs on the outer continental shelf of Marguerite Bay occuring within a zone that has undergone catastrophic grounding line retreat (Kilfeather et al. 2010). This suggests that GZWs can form relatively rapidly, while the localised nature and close association of these features with mega-scale glacial lineations is in keeping with a dynamic sedimentary system characterised by hierarchies of sediment transport. Preliminary modelling results are also presented that use the geomorphological evidence to constrain numerical simulations of the Marguerite Bay palaeo-ice stream system. Modelling output is then compared with both the known retreat style as recorded by geomorphological mapping and the deglacial chronology.

  1. Skeletal types: key to unraveling the mystery of facial beauty and its biologic significance.

    Science.gov (United States)

    Jefferson, Y

    1996-06-01

    In random studies, some faces will deviate toward Type II skeletal and some toward Type III. Some will deviate toward a skeletally short vertical while some toward long. In their study, Langlois and Roggman digitized individual faces through a computer. As more and more faces were entered, the composite of these faces became more and more attractive. From this, they concluded that attractive faces are only average. The "average" face may very well conform to the divine proportion. However, some faces are strikingly beautiful, and Alley and Cunningham in their study attempted to explain these attributes. Individuals who are blessed with attractive features are treated differently in our society. Ackerman states, "Attractive people do better: in school, where they receive more help, better grades and less punishment; at work, where they are rewarded with higher pay, more prestigious jobs and faster promotions; in finding mates, where they tend to be in control of the relationship and make most of the decisions; and among strangers, who assume them to be more interesting, honest, virtuous and successful." Many would find this special treatment objectionable and unfair. The irony is that beautiful individuals make up a very small percentage of the population; they have very little power to dictate how society should act and behave. Various disciplines have studied the nature of facial beauty. Individually, they provide partial answers; however, when viewed together, they begin to weave provocative insights as to its biologic significance. It is intricately related to divine proportion, and all living creatures have the genetic potential to develop toward it. The appreciation for this proportion is primitive and inborn; it is a biologic mechanism by which all living creatures are attracted to potential mates who conform to this strict proportion because they are biologically strong, healthy, and fertile. To date, there is no other profession other than ours that has the

  2. The impact of agriculture management on soil quality in citrus orchards in Eastern Spain

    Science.gov (United States)

    Hondebrink, Merel; Cerdà, Artemi; Cammeraat, Erik

    2015-04-01

    Bodí, M.B. 2009. Soil and water losses from new citrus orchards growing on sloped soils in the western Mediterranean basin. Earth Surface Processes and Landforms, 34, 1822-1830. DOI: 10.1002/esp.1889 Hazarika, S., Thakuria, D., Ganeshamurthy, A. N., & Sakthivel, T. (2014). Soil quality as influenced by land use history of orchards in humid subtropics. Catena, 123, 37-44. Wang, L., Tang, L., Wang, X., & Chen, F. (2010). Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research, 110(2), 243-250. Wanshnong, R. K., Thakuria, D., Sangma, C. B., Ram, V., & Bora, P. K. (2013). Influence of hill slope on biological pools of carbon, nitrogen, and phosphorus in acidic alfisols of citrus orchard. Catena, 111, 1-8. X. H. Li, J. Yang, C. Y Zhao and B. Wang
 (2014) Runoff and sediment from orchard terraces in Southeastern China. Land Degradation and Development, 25, 184-192. DOI: 10.1002/ldr.1160 Xu, Q. X., Wang, T. W., CAI, C. F., Li, Z.X., SHI, Z. H. 2012. Effects of soil conservation on soil properties of citrus orchards in the Three-Gorges Area, China. Land Degradation & Development, 23: 34 -42. DOI 10.1002/ldr.1045

  3. Convection in tropical cyclones associated with vapor volume reduction - a new concept

    Science.gov (United States)

    Mardhekar, D.

    2010-09-01

    low pressure zone due to the condensation is instantaneous. The moment the condensation takes place, the low pressure zone and the consequent pressure gradient force is formed at that instant, hence this phenomenon enhances the fuel input process. Thus, the combination of the convection and the low pressure zone formation due to condensation and vapor volume reduction plays a combined role in the dynamics of a tropical cyclone. In case of tornadoes in the tornado alley, tornadoes are formed where warm vapor-rich air from the Gulf of Mexico meets the cold dry air from Canada. Here the same phenomena of vapor volume reduction and consequent formation of the low pressure zone as explained above is dominantly contributing in initiating and maintaining the flow of air forming a tornado. Since this phenomenon is taking place on land and vapour supply is limited, the tornadoes have a short life span.

  4. Reaching Out Beyond The "Usual Suspects" And Traditional Media: Re-Branding Climate Change As A Problem With Feasible Solutions

    Science.gov (United States)

    Haines-Stiles, G.; Akuginow, E.; Alley, R. B.

    2012-12-01

    "Earth: The Operators' Manual" (ETOM) was an experiment, funded by NSF, to see how combining PBS TV broadcasts, online resources including both website and social media, plus on-site events at science centers could engage and inform large public audiences about both the science of climate change and renewable energy solutions. ETOM was structured to address the findings of social science researchers indicating that scaring audiences into changed behavior through doom and gloom scenarios was unlikely to work. While the three primetime broadcasts were relatively traditional in approach—classic public TV hours presented by noted geoscientist, Richard Alley—focus groups tested the impact of introducing him as a "church-going, registered Republican." Findings indicated this would engage a wider audience. Alley's key science arguments were also repackaged into a series of nine "How to Talk to an Ostrich" videos, complete with actual ostrich sounds, and encouraging viewers to ASK ETOM further questions about common misperceptions. The ClimateBite blog said, "Simply the best short videos on climate. Ever… each segment a clear, concise and compelling climate story, in everyday language, with great visuals." In addition, web-exclusive videos profiled diverse "Energy Heroes" such as West Texas rancher Steve Oatman, Fort Worth solar enthusiast, German Vasquez, and Baltimore "Energy Captain," Robbyn Lewis. Understanding that who says what is as important as what is said, ETOM featured an unusual and diverse set of "messengers." Houston's Mayor, Annise Parker, explained why she wanted her city to be America's renewable energy capital, and Marine Brigadier General Bob Hedelund argued that cutting back on fossil fuel could save soldiers' lives. West Texas cotton farmer Cliff Etheredge participated in outreach events in Washington DC, and high-ranking former military men were part of MILITARY GOES GREEN events in Raleigh NC and San Diego. Surveys and focus groups showed

  5. PBS Plus Facebook: The Old And New Communication Of Climate Science (Please "Like" And "Share" This Abstract)

    Science.gov (United States)

    Alley, R. B.; Haines-Stiles, G.; Akuginow, E.

    2012-12-01

    Traditional and innovative communications strategies were combined in "Earth: The Operators' Manual" (ETOM; writer & director Geoff Haines-Stiles, producer Erna Akuginow, presenter Richard Alley). We attempted both a clear and accessible presentation of some key essentials of current climate science and an experiment in new messaging and new media for outreach and education. ETOM is a 3-part TV series broadcast by PBS ("…one of the more interesting documentary series to come along in years", said the New York Times) and a 320 plus page tradebook, with 110 pages of footnotes referencing peer-reviewed science, published by Norton. But it's also a lively and growing Facebook page with a clear voice sharing positive examples of how renewable energy can reduce polluting emissions here in the US and worldwide, alongside headlines of climate science, and a website—relaunched for the 2012 Earth Day PBS broadcasts—where all three programs can be streamed, and teachers can register to download HD segments for classroom use. The TV programs were designed to offer a highly accessible statement of core climate science, literally explaining how ice cores show us today's climate is changing in ways not seen in the last 800,000 thousand years and why physics and chemistry let us know "It's Us" who are changing CO2 levels in the atmosphere through burning fossil fuels. But the project's outreach components also includes a "Science Pub" in a converted theater in Portland, where the audience consumes food, drink and climate science, and "Adventures of a Climate Scientist in the Age of Politics and Punditry," a dynamic live performance recorded for TV and the web. Messaging includes a Navy Rear Admiral in dress whites explaining why the Pentagon believes climate change is real, and scenes showing Marines and Army implementing solar technologies to enhance mission security and reduce their carbon bootprint. Similarly, outreach events at the North Carolina Museum of Natural

  6. The Arctic Grand Challenge: Abrupt Climate Change

    Science.gov (United States)

    Wilkniss, P. E.

    2003-12-01

    Trouble in polar paradise (Science, 08/30/02), significant changes in the Arctic environment are scientifically documented (R.E. Moritz et al. ibid.). More trouble, lots more, "abrupt climate change," (R. B. Alley, et al. Science 03/28/03). R. Corell, Arctic Climate Impact Assessment team (ACIA), "If you want to see what will happen in the rest of the world 25 years from now just look what's happening in the Arctic," (Arctic Council meeting, Iceland, 08/03). What to do? Make abrupt Arctic climate change a grand challenge for the IPY-4 and beyond! Scientifically:Describe the "state" of the Arctic climate system as succinctly as possible and accept it as the point of departure.Develop a hypothesis and criteria what constitutes "abrupt climate change," in the Arctic that can be tested with observations. Observations: Bring to bear existing observations and coordinate new investments in observations through an IPY-4 scientific management committee. Make the new Barrow, Alaska, Global Climate Change Research Facility a major U.S. contribution and focal point for the IPY-4 in the U.S Arctic. Arctic populations, Native peoples: The people of the North are living already, daily, with wrenching change, encroaching on their habitats and cultures. For them "the earth is faster now," (I. Krupnik and D. Jolly, ARCUS, 2002). From a political, economic, social and entirely realistic perspective, an Arctic grand challenge without the total integration of the Native peoples in this effort cannot succeed. Therefore: Communications must be established, and the respective Native entities must be approached with the determination to create well founded, well functioning, enduring partnerships. In the U.S. Arctic, Barrow with its long history of involvement and active support of science and with the new global climate change research facility should be the focal point of choice Private industry: Resource extraction in the Arctic followed by oil and gas consumption, return the combustion

  7. Relations between total phosphorus and orthophosphorus concentrations and rainfall, surface-water discharge, and groundwater levels in Big Cypress Seminole Indian Reservation, Florida, 2014–16

    Science.gov (United States)

    McBride, W. Scott; Sifuentes, Dorothy F.

    2018-02-06

    The Seminole Tribe of Florida (the Tribe) is partnering with the U.S. Environmental Protection Agency to develop a numeric phosphorus criterion for the 52,000-acre Big Cypress Seminole Indian Reservation (BCSIR), which is located downgradient of the Everglades Agricultural Area, and of other public and private lands, in southeastern Hendry County and northwestern Broward County in southern Florida. The U.S. Geological Survey (USGS), in cooperation with the Tribe, used water-quality data collected between October 2014 and September 2016 by the Tribe and the South Florida Water Management District (SFWMD), along with data from rainfall gages, surface-water stage and discharge gages, and groundwater monitoring wells, to (1) examine the relations between local hydrology and measured total phosphorus (TP) and orthophosphorus (OP) concentrations and (2) identify explanatory variables for TP concentrations. Of particular concern were conditions when TP exceeded 10 parts per billion (ppb) (0.01 milligram per liter [mg/L]) given that the State of Florida and the Miccosukee Tribe of Indians Alligator Alley Reservation (located downstream of the BCSIR) have adopted a 10-ppb maximum TP criterion for surface waters.From October 2014 to September 2016, the Tribe collected 47–52 samples at each of nine water-quality sites for analysis of TP and OP, except at one site where 28 samples were collected. For all sites sampled, concentrations of TP (as phosphorus [P]) ranged from less than 0.002 mg/L (2 ppb) to a maximum of nearly 0.50 mg/L (500 ppb), whereas concentrations of OP (as P), the reactive form of inorganic phosphorus readily absorbed by plants and (or) abiotically absorbed, ranged from less than 0.003 mg/L (3 ppb) to a maximum of 0.24 mg/L (240 ppb). The median and interquartile ranges of concentrations of TP and OP in the samples collected in 2014–16 by the Tribe were similar to the median and interquartile ranges of concentrations in samples collected by the SFWMD at

  8. Using of microvertebrate remains in reconstruction of late quaternary (Holocene paleoclimate, Eastern Iran

    Directory of Open Access Journals (Sweden)

    Narges Hashemi

    2015-10-01

    possible , with the aid of measuring microscope having accuracy 0.001 mm. One of the main goals of the detailed analysis on dental remains is obtaining the changes of teeth size during time and space (Mashkour and Hashemi 2008 . KS remains were recovered out by water sieving a column of three geological sieves with decreasing size of the mesh from top to bottom: 1 cm, 0.5 cm and 0.2 cm. Furthermore, all obtained information, which depending on the type of the skeletal remains has been entered in tables of excel for statistical analysis. Combination of morphometric with morphological studies and their identification keys were used to identify of the remains. Based on these methods, known examples in both archeological sites were belonging to Gerbillinae and Tatera indica species .     Discussion of Results & Conclusions   The effect of climate change on Tatera indica species was found for the first time in 1973 in the western regions of Iran and Dehloran plain (10,000-3800 years ago (Redding 1978 . This region has 200 to 399 mm of rainfall per year; rivers, streams, marshes and channels which represents wet conditions in most of the year. In this area, in addition of Tatera indica species, Nesokia indica, Mus musculus, Gerbillus nanus and Meriones crassus were identified. The remains of Tatera indica species with Nesokia and Mus were found also in Shahre shoukhteh in Sistan which wa s reported approximately 6000 years ago (Chaline and Helmer 1974 . Presence of Tatera indica in KS site and also in other central, western, southwestern and eastern Iran during the mid to late Holocene can be show that climatic and environmental conditions in the southern half part of the country has not changed from 9000 years to recent (Alley et al. 1997 .   Finding the dental and cranial remains of Tatera indica in TN of Mashhad and in another archeological site such as Kohandejh in north east of Iran (Nishapur can be indicate the change climate probably was intense in 2,000 years ago in

  9. Economic wealth and soil erosion in new Citrus plantations in Eastern Spain or how to explain the Land Degradation

    Science.gov (United States)

    Giménez-Morera, Antonio; Cerdà, Artemio; Pereira, Pauloq

    2014-05-01

    higher than rainfed agriculture soil (García Orenes et al., 2009). Acknowledgements The research projects GL2008-02879/BTE, LEDDRA 243857 and RECARE FP7 project 603498 supported this research. References Bono, E. 2010. Naranja y desarrollo. La base agrícola exportadora de la economía del País Valenciano y el modelo de crecimiento hacea afuera. PUV, Valencia, 203 pp. Cerdà, A. 2001. Erosión hídrica del suelo en el Territorio Valenciano. El estado de la cuestión a través de la revisión bibliográfica. Geoforma Ediciones, Logroño, 79 pp. Cerdá, A. 2007. Soil water erosion on road embankments in Eastern Spain. Science of the Total Environments 378, 151-155. Cerdà, A., Morera, A.G., Bodí, M.B. 2009. Soil and water losses from new citrus orchards growing on sloped soils in the western Mediterranean basin. Earth Surface Processes and Landforms, 34 (13), 1822-1830. García-Orenes, F., Cerdà, A., Mataix-Solera, J., Guerrero, C., Bodí, M.B., Arcenegui, V., Zornoza, R. & Sempere, J.G. 2009. Effects of agricultural management on surface soil properties and soil-water losses in eastern Spain. Soil and Tillage Research, doi:10.1016/j.still.2009.06.002 Liu, Y., Tao, Y., Wan, K.Y., Zhang, G.S., Liu, D.B., Xiong, G.Y., Chen, F. 2012. Runoff and nutrient losses in citrus orchards on sloping land subjected to different surface mulching practices in the Danjiangkou Reservoir area of China. Agricultural Water Management, 110, 34-40. Wang, L., Tang, L., Wang, X., Chen, F. 2010. Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research, 110 (2), 243-250.

  10. Ciclagem de nutrientes via precipitação pluvial total, interna e escoamento pelo tronco em sistema agroflorestal com Gliricidia sepium Nutrient cycling through rainfall, throughfall and stemflow in an agroforestry system with Gliricidia sepium in semi-arid Paraiba, Brazil

    Directory of Open Access Journals (Sweden)

    Aldrin Martin Perez-Marin

    2008-12-01

    de insumos externos, como os da região semi-árida do Nordeste.The nutrients in rainwater that reach the soil by throughfall or stemflow may represent significant nutrient fluxes in agroforestry systems with low external input. However, there is no information about these processes in agroecosystems of semi-arid northeastern Brazil. This study was conducted in an alley cropping system with Gliricidia and maize in Esperança, PB, Brazil. The objectives of the study were to quantify: (a the proportion of rainfall that reaches the soil as throughfall or stemflow and the amount intercepted by the tree canopy; and (b the input of N, P and K to the soil as throughfall, stemflow and direct rainfall water. Four plots were established in the experimental area and throughfall water collectors were placed at a distance of 0.50 m from the tree trunks. Stemflow water was collected in each plot using collars around the tree trunks that conducted the water to collectors while four collectors were installed in adjacent areas without trees to collect rainfall water. Of the total rainfall in 2004, 67 % reached the soil as throughfall, 0.74 % as stemflow and 32 % was intercepted by tree canopies. N and P concentrations were similar in throughfall and stemflow water samples, but these were around 300 % greater than those in rainfall water. The K concentration in stemflow water was 100 and 600 % greater than in samples from throughfall and rainfall, respectively. On average, N, P, and K inputs to the soil were 5, 1 and 24 kg ha-1 in rainfall water; 9, 2 and 62 kg ha-1 in throughfall water; and 0.12, 0.02 and 1 kg ha-1 in stemflow water, respectively. The results demonstrate the importance of agroforestry for the sustainability of agricultural systems with low external input in semi-arid NE Brazil.

  11. Efeito da Gliricidia sepium sobre nutrientes do solo, microclima e produtividade do milho em sistema agroflorestal no Agreste Paraibano Effects of Gliricidia sepium on soil nutrients, microclimate and maize yield in an agroforestry system in semi-arid Paraiba, Brazil

    Directory of Open Access Journals (Sweden)

    Aldrin Martin Pérez Marin

    2006-06-01

    Full Text Available Gliricidia sepium é uma leguminosa arbórea que tem sido utilizada em sistemas em aléias no semi-árido nordestino por apresentar bom desenvolvimento em condições de estresse hídrico. Entretanto, há pouca informação disponível sobre o efeito da introdução dessa espécie nos agroecossistemas da região. No presente estudo, objetivou-se avaliar a influência da distância de plantas de Gliricidia sepium sobre características da cultura do milho e do solo e microclima no Agreste Paraibano. O estudo foi realizado no município de Esperança (PB, em área de 0,5 ha, onde, em 1996, foram plantadas fileiras de G. sepium espaçadas 6 m entre si e com 1 m entre as árvores. Nesta área, em 2002, foram delimitadas quatro parcelas de 6 x 8 m e, em cada parcela, foi estabelecido um transeto perpendicular às fileiras de árvores com três posições de amostragem: (1 nas fileiras de árvores (0 m; (2 a 1 m das fileiras de árvores, e (3 a 3 m de distância das fileiras de árvores. O delineamento experimental utilizado foi em blocos casualizados com quatro repetições. A massa seca de folhedo caído embaixo da fileira de árvores foi de 1.390 kg ha-1 e diminuiu, gradativamente, para 270 kg ha-1 a 3 m de distância das árvores. As concentrações de P, K e matéria orgânica leve (MOL embaixo das árvores foram maiores do que a 1 e 3 m de distância das fileiras. As médias mensais das temperaturas mínimas do ar e do solo embaixo e a 3 m das árvores foram similares. Entretanto, as médias mensais das temperaturas máximas do solo e do ar foram de 6 e 2 °C mais altas a 3 m das árvores, respectivamente, ao longo do período de estudo. A umidade do solo foi significativamente menor embaixo das árvores do que a 1 e 3 m de distância. O milho produziu mais grãos e palha e acumulou mais nutrientes nas posições mais próximas das fileiras de G. sepium.Gliricidia sepium is a leguminous tree that has been used in alley cropping systems in the

  12. Summary of the program 'Environmentally correct utilization of ashes' at Vaermeforsk 2002-2005; Syntes av delprogrammet 'Miljoeriktig anvaendning av askor' foer 2002-2005

    Energy Technology Data Exchange (ETDEWEB)

    Bjurstroem, Henrik [AaF-Process AB, Stockholm (Sweden)

    2006-04-15

    barriers were addressed in parallel projects. The standards in force today on the use of ashes in cement and concrete refer to the utilization of coal ashes rich in silica. The Swedish ashes from biofuels do not fit into these standards. Their use as fine filler in concrete has been developed and demonstrated. Fly ash has been shown to be a replacement for cement in another type of construction. In mines, excavated ore volumes are filled with tailings stabilized with cement before the neighbouring volumes may be exploited. Fly ash may replace at least half of the cement, which also has been confirmed in pilot tests. The main thrust in the Ash Programme on landfills is on covers using ash and sludge from municipal wastewater treatment. Ashes provide the cover layer a high pH value that hinders biological degradation of the sludge as well as mechanical stability. In two parallel alleys projects have investigated mixing proportions between ash and digested sludge and prepared in all four pilot surfaces on landfills, with satisfactory results. The properties of these surfaces are now being followed up during a longer time. Landfills are today the largest consumers of ashes. The uses for ashes, e.g. as banking material or covers, and the experience gained have been reviewed. Ashes from biofuels have an important role to fill in a sustainable harvesting of biofuels. The removal of mineral nutrients in the shape of logging residues is compensated for by spreading the ashes to these areas, i.e. recycling or compensatory fertilization. Ashes provide also a more balanced supply of nutrients than lime or chalk to surfaces damaged by acid rain, the so-called vitalizing fertilization. In contrast to construction, where guidelines are needed, there are already guidelines, acceptance from authorities and ongoing activities. An important issue is the classification of combustion by-products according to the waste regulations. This requires a deep knowledge of the speciation of elements

  13. Experimental and numerical modelling of surface water-groundwater flow and pollution interactions under tidal forcing

    Science.gov (United States)

    Spanoudaki, Katerina; Bockelmann-Evans, Bettina; Schaefer, Florian; Kampanis, Nikolaos; Nanou-Giannarou, Aikaterini; Stamou, Anastasios; Falconer, Roger

    2015-04-01

    ). Ph.D. Thesis, National Technical University of Athens, Greece. Sparks, T. D., Bockelmann-Evans, B. N. and Falconer, R. A. (2013). Laboratory Validation of an Integrated Surface Water- Groundwater Model. Journal of Water Resource and Protection, 5, 377-394. Winter, T.C., Harvey, J.W., Franke, O.L. and Alley, W.M., 1998. Groundwater and surface water - A single resource. USGS, Circular 1139.

  14. Using of microvertebrate remains in reconstruction of late quaternary (Holocene paleoclimate, Eastern Iran

    Directory of Open Access Journals (Sweden)

    Mansour Aliabadian

    2015-09-01

    when possible , with the aid of measuring microscope having accuracy 0.001 mm. One of the main goals of the detailed analysis on dental remains is obtaining the changes of teeth size during time and space (Mashkour and Hashemi 2008 . KS remains were recovered out by water sieving a column of three geological sieves with decreasing size of the mesh from top to bottom: 1 cm, 0.5 cm and 0.2 cm. Furthermore, all obtained information, which depending on the type of the skeletal remains has been entered in tables of excel for statistical analysis. Combination of morphometric with morphological studies and their identification keys were used to identify of the remains. Based on these methods, known examples in both archeological sites were belonging to Gerbillinae and Tatera indica species .     Discussion of Results & Conclusions   The effect of climate change on Tatera indica species was found for the first time in 1973 in the western regions of Iran and Dehloran plain (10,000-3800 years ago (Redding 1978 . This region has 200 to 399 mm of rainfall per year rivers, streams, marshes and channels which represents wet conditions in most of the year. In this area, in addition of Tatera indica species, Nesokia indica, Mus musculus, Gerbillus nanus and Meriones crassus were identified. The remains of Tatera indica species with Nesokia and Mus were found also in Shahre shoukhteh in Sistan which wa s reported approximately 6000 years ago (Chaline and Helmer 1974 . Presence of Tatera indica in KS site and also in other central, western, southwestern and eastern Iran during the mid to late Holocene can be show that climatic and environmental conditions in the southern half part of the country has not changed from 9000 years to recent (Alley et al. 1997 .   Finding the dental and cranial remains of Tatera indica in TN of Mashhad and in another archeological site such as Kohandejh in north east of Iran (Nishapur can be indicate the change climate probably was intense in

  15. NEWS: A trip to CERN

    Science.gov (United States)

    Ellison, A. D.

    2000-07-01

    the canteen. Over lunch we mixed with physicists of many different nationalities and backgrounds. Figure 1 Figure 1. In the afternoon we visited Microcosm, the CERN visitors centre, and the LEP control room and also the SPS. Here the students learned new applications for much of the physics of standing waves and resonance that they had been taught in the classroom. Later that night, we visited a bowling alley where momentum and collision theory were put into practice. The following morning we returned to CERN and visited the large magnet testing facility. Here again physics was brought to life. We saw superconducting magnets being assembled and tested and the students gained a real appreciation of the problems and principles involved. The afternoon was rounded off by a visit to a science museum in Geneva - well worth a visit, as some of us still use some of the apparatus on display. Friday was our last full day so we visited Chamonix in the northern Alps. In the morning, we ascended the Aiguille de Midi - by cable car. Twenty minutes and 3842 m later we emerged into 50 km h-1 winds and -10 °C temperature, not counting the -10 °C wind chill factor. A crisp packet provided an unusual demonstration of the effects of air pressure (figure 2). Figure 2 Figure 2. The views from the summit were very spectacular though a few people experienced mild altitude sickness. That afternoon the party went to the Mer de Glace. Being inside a 3 million year-old structure moving down a mountain at 3 cm per day was an interesting experience, as was a tot of whisky with 3 million year-old water. Once again the local scenery was very photogenic and the click and whirr of cameras was a constant background noise. Saturday morning saw an early start for the long drive home. Most students - and some staff - took the opportunity to catch up on their sleep. Thanks are due to many people without whom the trip would never have taken place. Anne Craige, Stuart Williams

  16. The contribution of mulches to control high soil erosion rates in vineyards in Eastern Spain

    Science.gov (United States)

    Cerdà, Artemi; Jordán, Antonio; Zavala, Lorena; José Marqués, María; Novara, Agata

    2014-05-01

    -579. DOI: 10.1111/j.1475-2743.2012.00451.x Giménez Morera, A., Ruiz Sinoga, J.D. y Cerdà, A. 2010. The impact of cotton geotextiles on soil and water losses in Mediterranean rainfed agricultural land. Land Degradation and Development , 210- 217. DOI: 10.1002/ldr.971. Haregeweyn, N., Poesen, J., Verstraeten, G., Govers, G., de Vente, J., Nyssen, J., Deckers, J., Moeyersons, J. 2013. Assessing the performance of a Spatially distributed soil erosion and sediment delivery model (WATEM/SEDEM) in Northern Ethiopia. Land Degradation & Development 24, 188-204. DOI 10.1002/ldr.1121 Marqués M.J., Jiménez, L., Pérez-Rodríguez, R., García-Ormaechea, S., Bienes, R. 2005. Reducing water erosion by combined use of organic amendment and shrub revegetation. Land Degradation Development, 16, 339-350. Marqués, M.J., Bienes, R., Jiménez, L., Pérez-Rodríguez, R.. 2007. Effect of vegetal cover on runoff and soil erosion under light intensity events. Rainfall simulation over USLE plots. Science of the Total Environment, 378, 161-165. Ore, G., Bruins, H. J. 2012. Design features of ancient agriculture terrace walls in the Negev Desert: human-made geodiversity. Land Degradation & Development, 23: 409- 418. DOI 10.1002/ldr.2152 Robichaud, P.R., Lewis, S.A., Wagenbrenner, J.W., Ashmun, L.E., Brown, R.E. 2013a. Post-fire mulching for runoff and erosion mitigation. Part I: Effectiveness at reducing hillslope erosion rates. Catena 105, 75-92. Robichaud, P.R., Wagenbrenner, J.W., Lewis, S.A., Ashmun, L.E., Brown, R.E., Wohlgemuth, P.M. 2013b. Post-fire mulching for runoff and erosion mitigation. Part II: Effectiveness in reducing runoff and sediment yields from small catchments. Catena 105, 93-111. Wang, L., Tang, L., Wang, X., Chen, F. 2010. Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research 110, 243-250. Wu J., Li Q., Yan L. 1997. Effect of intercropping on soil erosion in young citrus plantation - a

  17. Extreme soil erosion rates in citrus slope plantations and control strategies. A literature review

    Science.gov (United States)

    Cerdà, Artemi; Ángel González Peñaloza, Félix; Pereira, Paulo; Reyes Ruiz Gallardo, José; García Orenes, Fuensanta; Burguet, María

    2013-04-01

    approach. Catena, 85 (3), 231-236. Cerdà, A., Jurgensen, M.F., Bodi, M.B. 2009. Effects of ants on water and soil losses from organically-managed citrus orchards in eastern Spain. Biologia, 64 (3), 527-531. Cerdà, A., Morera, A.G., Bodí, M.B. 2009. Soil and water losses from new citrus orchards growing on sloped soils in the western Mediterranean basin. Earth Surface Processes and Landforms, 34 (13), 1822-1830. Lavigne, C., Achard, R., Tixier, P., Lesueur Jannoyer, M. 2012. How to integrate cover crops to enhance sustainability in banana and citrus cropping systems. Acta Horticulturae, 928, 351-358. Le Bellec, F., Damas, O., Boullenger, G., Vannière, H., Lesueur Jannoyer, M., Tournebize, R., Ozier Lafontaine, H. 2012. Weed control with a cover crop (Neonotonia wightii) in mandarin orchards in Guadeloupe (FWI). Acta Horticulturae, 928, 359-366. Liu, Y., Tao, Y., Wan, K.Y., Zhang, G.S., Liu, D.B., Xiong, G.Y., Chen, F. 2012. Runoff and nutrient losses in citrus orchards on sloping land subjected to different surface mulching practices in the Danjiangkou Reservoir area of China. Agricultural Water Management, 110, 34-40. Lu, J., Wilson, M.J., Yu, J. 1997. Effects of trench planting and soil chiselling on soil properties and citrus production in hilly ultisols of China Soil and Tillage Research, 43 (3-4), 309-318. Lü, W., Zhang, H., Wu, Y., Cheng, J., Li, J., Wang, X. 2012. The impact of plant hedgerow in Three Gorges on the soil chemicophysical properties and soil erosion. Key Engineering Materials, 500, 142-148. Wang, L., Tang, L., Wang, X., Chen, F. 2010. Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research, 110 (2), 243-250. Wu J., Li Q., Yan L. 1997. Effect of intercropping on soil erosion in young citrus plantation - a simulation study. Chinese Journal of Applied Ecology, 8 (2), 143-146. Wu, D.-M., Yu, Y.-C., Xia, L.-Z., Yin, S.-X., Yang, L.-Z. 2011. Soil fertility indices of citrus

  18. E-publishing and multimodalities

    Directory of Open Access Journals (Sweden)

    Yngve Nordkvelle

    2008-12-01

    Full Text Available In the literature of e-publishing there has been a consistent call from the advent of e-publishing on, until now, to explore new ways of expressing ideas through the new media. It has been claimed that the Internet opens an alley of possibilities and opportunites for publishing that will change the ways of publishing once and for all. In the area of publication of e-journals, however, the call for changes has received very modest responds.The thing is, it appears, that the conventional paper journal has a solid grip on the accepted formats of publishing. In a published research paper Mayernik (2007 explaines some of the reasons for that. Although pioneers of e-publishing suggested various areas where academic publishing could be expanded on, the opportunities given are scarsely used. Mayernik outlines "Non-linearity", "Multimedia", "Multiple use", "Interactivity" and "Rapid Publication" as areas of expansion for the academic e-journal. (2007. The paper deserves a thorough reading in itself, and I will briefly quote from his conclusion: "It is likely that the traditional linear article will continue to be the prevalent format for scholarly journals, both print and electronic, for the foreseeable future, and while electronic features will garner more and more use as technology improves, they will continue to be used to supplement, and not supplant, the traditional article."This is a challenging situation. If we accept the present dominant style of presenting scientific literature, we would use our energy best in seeking a way of improving the efficiency of that communication style. The use of multimedia, non-linearity etc. would perfect the present state, but still keep the scientific article as the main template. It is very unlikely that scientific publication will substitute the scholarly article with unproven alternatives. What we face is a rather conservative style of remediation that blurs the impact of the new media, - or "transparency" if

  19. Production, soil erosion and economic failure in new citrus plantations in Eastern Spain

    Science.gov (United States)

    Giménez Morera, Antonio; Carles membrado, Joan; Cerdà, Artemi; Ángel González Peñaloza, Félix

    2013-04-01

    de València (Valencia, España). 256 pp. Wang, L., Tang, L., Wang, X., Chen, F. 2010. Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research, 110 (2), 243-250.

  20. Privatização tcheca: de propriedade pública a propriedade pública em cinco anos?

    Directory of Open Access Journals (Sweden)

    Pavel Mertlík

    1996-12-01

    calls the modernization dead end are of structural character and that so shoud they be understood and dealt with. The second part of the article concerns the transformation as a new path of modernization, covering what the autor understands to be the relevant issues for getting these countries "out of the dead end alley": the long term problems , institutional building and changes in the behavioural norms. The article finishes with an overview and prospects, especially those concerned with the European Union membership. DR. TATIANA ZASLAVSKAIA'S ARTICLE is a broad overview of the social stratification of the Russian Federation and it dynamics, as a result of the systemic transformation the country is undergoing. This article results of an original research, done on the basis of a three year monitoring of the reforms, conduced by the Russian Center of Public Opinion Research. Besides defining the goals of the research and the methods followed, the article traces the social structure of the Russian society; it identifies its different groups and strata, with the correspondent socio-demographic characteristics and socio-economic status; and it discusses the income distribution and its dynamics over the period under investigation. The main conclusion of the research - only part of it being the subject mather of the article - is that the process of systemic transformation is deep and marked by contradictions, reflecting the combination of modernisation and social regression, without definition of which of these trends prevails. The central issue is now the adaptation of the mass groups to the new social conditions, which may lead to serious social and political problems. In view of this, the role of social scientist is to correctly assess the results of the transformation process and the degree of its conformity with the social interests of the mass groups and strata of the population and with their capacity of adaptation to the market. This would be their contribution to

  1. The use of straw mulch as a strategy to prevent extreme soil erosion rates in citrus orchard. A Rainfall simulation approach

    Science.gov (United States)

    Cerdà, Artemi; Giménez-Morera, Antonio; Jordán, Antonio; Pereira, Paulo; Novara, Agata; García-Orenes, Fuensanta

    2014-05-01

    . Catena 105, 75-92. Robichaud, P.R., Wagenbrenner, J.W., Lewis, S.A., Ashmun, L.E., Brown, R.E., Wohlgemuth, P.M. 2013b. Post-fire mulching for runoff and erosion mitigation. Part II: Effectiveness in reducing runoff and sediment yields from small catchments. Catena 105, 93-111. Silvestre, G., Gómez, M.P., Pascual, A., Ruiz, B. 2013. Anaerobic co-digestion of cattle manure with rice straw: Economic & energy feasibility. Water Science and Technology 67, 745-755 Wang, L., Tang, L., Wang, X., Chen, F. 2010. Effects of alley crop planting on soil and nutrient losses in the citrus orchards of the Three Gorges Region. Soil and Tillage Research 110, 243-250. Wu J., Li Q., Yan L. 1997. Effect of intercropping on soil erosion in young citrus plantation - a simulation study. Chinese Journal of Applied Ecology 8, 143-146. Wu, D.-M., Yu, Y.-C., Xia, L.-Z., Yin, S.-X., Yang, L.-Z. 2011. Soil fertility indices of citrus orchard land along topographic gradients in the three gorges area of China. Pedosphere 21, 782-792. Xu, Q., Wang, T., Li, Z., Cai, C., Shi, Z., Jiang, C. 2010. Effect of soil conservation measurements on runoff, erosion and plant production: A case study on steeplands from the Three Gorges Area, China. Journal of Food, Agriculture and Environment 8, 980-984. Xu, Q.X., Wang, T.W., Cai, C.F., Li, Z.X., Shi, Z.H. 2012. Effects of soil conservation on soil properties of citrus orchards in the Three-Gorges Area, China. Land Degradation and Development 23, 34-42. Zhao, G., Mu, X., Wen, Z., Wang, F., Gao, P. 2013. Soil erosion, conservation, and eco-environment changes in the Loess Plateau of China. Land Degradation & Development, 24, 499- 510. DOI 10.1002/ldr.2246SP