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Journal articles on the topic 'Fallout method'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Poręba, Grzegorz, and Andrzej Bluszcz. "Determination of the Initial 137Cs Fallout on the Areas Contaminated by Chernobyl Fallout." Geochronometria 26, no. -1 (2007): 35–38. http://dx.doi.org/10.2478/v10003-007-0009-y.

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Determination of the Initial137Cs Fallout on the Areas Contaminated by Chernobyl FalloutThe fallout radioisotope137Cs is widely used to study rates and patterns of soil redistribution. This method requires the knowledge about the initial fallout of cesium in the study area. This paper describes the method of establishing the initial fallout of cesium for a study area which is contaminated by Chernobyl fallout. The study was carried out on the loess area near the Ujazd village (South-West Poland). The137Cs activities for reference soil cores varied from 4.41(24) kBq/m2to 5.97(26) kBq/m2. The av

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Moss, Richard. "A Simple Method of Preventing Snapper Fallout during Syringe Liposuction." Plastic and Reconstructive Surgery 119, no. 5 (2007): 1627–28. http://dx.doi.org/10.1097/01.prs.0000256495.93902.41.

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Eliasson, Jonas, Junichi Yoshitani, Konradin Weber, Nario Yasuda, Masato Iguchi, and Andreas Vogel. "Airborne Measurement in the Ash Plume from Mount Sakurajima: Analysis of Gravitational Effects on Dispersion and Fallout." International Journal of Atmospheric Sciences 2014 (October 19, 2014): 1–16. http://dx.doi.org/10.1155/2014/372135.

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Volcanic ash concentrations in the plume from Sakurajima volcano in Japan are observed from airplanes equipped with optical particle counters and GPS tracking devices. The volcano emits several puffs a day. The puffs are also recorded by the Sakurajima Volcanological Observatory. High concentrations are observed in the puffs and fallout driven by vertical air current, called streak fallout. Puffs dispersion is analyzed by the classical diffusion-advection method and a new gravitational dispersion method. The fluid mechanic of the gravitational dispersion, streak fallout, and classical diffusio

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Djuwansah, M. R., A. Mulyono, and R. Harryanto. "Current ability of 137Cs radionuclear fallout method for erosion assessment in Indonesia." IOP Conference Series: Earth and Environmental Science 393 (December 30, 2019): 012062. http://dx.doi.org/10.1088/1755-1315/393/1/012062.

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Papadakos, G. N., D. J. Karangelos, N. P. Petropoulos, M. J. Anagnostakis, E. P. Hinis, and S. E. Simopoulos. "Uncertainty assessment method for the Cs-137 fallout inventory and penetration depth." Journal of Environmental Radioactivity 171 (May 2017): 234–45. http://dx.doi.org/10.1016/j.jenvrad.2017.02.009.

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Saravanan, M., S. Karthikeyan, and S. Ganesh Kumar. "Investigation of Multi-Dimensional Cellular Manufacturing System Using Meta-Heuristic Method." Applied Mechanics and Materials 766-767 (June 2015): 982–88. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.982.

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Group technology is commonly preferred arrangement in the Cellular manufacturing system (CMS). Since worker have an important role in doing jobs on machines, assignment of worker to cells becomes a crucial factor for utilization of cellular manufacturing system. In this paper, the objective is to minimize the number of voids and exceptional element in a cell. Computational fallout demonstrate that planned particle swarm optimization (PSO) algorithm can obtain better objective function values in less computational time than existing method.

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Tonini, R., L. Sandri, A. Costa, and J. Selva. "Brief Communication: The effect of submerged vents on probabilistic hazard assessment for tephra fallout." Natural Hazards and Earth System Sciences 15, no. 3 (2015): 409–15. http://dx.doi.org/10.5194/nhess-15-409-2015.

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Abstract. Many volcanic systems are partially or entirely submerged, implying that vents may open underwater. The effect of submerged vents on probabilistic volcanic hazard assessment (PVHA) for tephra fallout has always been neglected, introducing potentially uncontrolled biases. We present a strategy to quantify the effect of submerged vents on PVHA for tephra fallout, based on a simplified empirical model in which the efficiency of tephra production decreases as a function of the water depth above the eruptive vent. The method is then applied to Campi Flegrei caldera, comparing its results

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Tonini, R., L. Sandri, A. Costa, and J. Selva. "Brief Communication: The effect of submerged vents on probabilistic hazard assessment for tephra fallout." Natural Hazards and Earth System Sciences Discussions 2, no. 11 (2014): 7181–96. http://dx.doi.org/10.5194/nhessd-2-7181-2014.

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Abstract. Many volcanic systems are partially or entirely submerged, implying that vents may open underwater. The effect of submerged vents on probabilistic volcanic hazard assessment (PVHA) for tephra fallout has always been neglected, introducing potentially uncontrolled biases. We present a strategy to quantify the effect of submerged vents on PVHA for tephra fallout, based on a simplified empirical model where the efficiency of tephra production decreases as a function of the water depth above the eruptive vent. The method is then applied to Campi Flegrei caldera, comparing its results to

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Perissi, Ilaria, Sara Falsini, and Ugo Bardi. "Mechanisms of meme propagation in the mediasphere: a system dynamics model." Kybernetes 48, no. 1 (2019): 79–90. http://dx.doi.org/10.1108/k-05-2017-0192.

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Purpose In the age of internet memes spread around the world in very short time, it has been already proved that, in several cases, the mechanism of propagation is very similar to a flu infection. However, this model turns out to be invalid if the spreading is generated by the mass media (TV, radio and the like). This paper aims to explore for the first time this non-viral dynamic (“fallout model”). Design/methodology/approach Two different dynamic models were developed to explain the viral and the mass media-powered meme propagations, and both were tested using data from Google Trends. Findin

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10

Haaland, Carsten M. "A Graphical Method for Forecasting Radiation Exposure From Multi-aged Fallout From Nuclear Weapons." Health Physics 50, no. 6 (1986): 705–20. http://dx.doi.org/10.1097/00004032-198606000-00002.

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11

Gao, Linyu, Yi Zhang, Liu Hong, et al. "Observation and Measurement of Smokers’ Ash Removal Behavior in China." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 28, no. 1 (2018): 42–50. http://dx.doi.org/10.2478/cttr-2018-0005.

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SummaryIn order to investigate the main factors behind hot coal fallout during cigarette smoking, an in-use behavior survey among smokers was conducted in three locations (Guiyang, Shijiazhuang and Nanchang) in China. In addition, a measuring device was designed to record whether a flicking or tapping force was exerted to remove ash and to record the force applied as well as their characteristic parameters. We found that there was no significant difference among the behavior characteristic parameters of the users in the three locations. The proportion of consumers who applied flicking was high

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Zhou, Tong. "An Improved Video Mosaic Block Detection Method on the Statistics of Pixel Difference across the Boundary of Macroblock and Suspected Mosaic Blocks." Applied Mechanics and Materials 263-266 (December 2012): 365–70. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.365.

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This passage proposes a new method to detect mosaic not only using the Y (luminance) component in YUV color space of videos, but also using the U (chrominance) and V component. The mosaic effect is measured by the boundary pixel difference from the neighbor macroblock. Instead of detecting the existence and position of mosaic blocks as traditional methods do, this method focuses on the statistics of the number of suspected mosaic blocks so that the quality of the whole frame affected by mosaic can be assessed. Experimental results show that the new method has good performance on fallout ratio,

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Simon, S. L., R. D. Lloyd, J. E. Till, et al. "Development of a Method to Estimate Thyroid Dose from Fallout Radioiodine in a Cohort Study." Health Physics 59, no. 5 (1990): 669–91. http://dx.doi.org/10.1097/00004032-199011000-00017.

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14

Vlasov, Oleg K., Irina A. Zvonova, Pavel Krajewski, Nataliya V. Shchukina, Sergey Yu Chekin, and Konstantin A. Tumanov. "Radioecological modeling of the 131I activity dynamics in different types of grass vegetation in the Chernobyl accident year." Nuclear Energy and Technology 7, no. 1 (2021): 27–32. http://dx.doi.org/10.3897/nucet.7.64979.

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The dynamics of 137Cs and 131I radioactivity in the crude biomass of the grass fodder and food vegetation in Mazovia, Poland, in 1986, the year of the Chernobyl accident, has been estimated. Density of 137Cs and 131I in the soil and vegetation have been measured as a function of rainfall and biomass density as of the time most of the fallout took place. A method is described to convert the instrumental data for the radionuclide activity dynamics in vegetation of one type to vegetation of other types. The results of such data conversion from lawn grass to other types of food and fodder grass ve

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Thakur, Manisha, and Manas Kanti Deb. "Field Detection and Sensitive Determination of Copper in Soil and Airborne Dust Particulates with1-[Pyridyl-(2)-azo]-naphthol-(2), N-Phenyl-N′-(4-methylphenyl)benzamidine, and Triton X-100." Journal of AOAC INTERNATIONAL 82, no. 3 (1999): 738–46. http://dx.doi.org/10.1093/jaoac/82.3.738.

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Abstract A rapid field detection and spectrophotometric method for determining copper is described. The method is based on extraction of the red Cu(II)-1-[pyridyl-(2)-azo]naphthol-(2) (PAN) complex with N-Phenyl-N'-(4-methylphenyl)benzamidine (PMPBA) in the presence of a nonionic surfactant, Triton X-100 (TX-100) at pH 8.0–9.3. The molar absorptivity of the red Cu(II)-PAN–TX-100–PMPBA complex is 1.90 × 10s L/mol/cm at 550 nm, the wavelength of maximum absorption. The detection limit is 1 ng Cu/mL aqueous solution. The system obeys Beer’s law up to a concentration of 0.4 μg Cu(II)/mL or 4 μg/10

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Dinis, Maria de Lurdes, and Maria Inês Gonçalves. "Spatial Variability of Atmosphere Dust Fallout Flux in Urban–Industrial Environments." Atmosphere 11, no. 10 (2020): 1069. http://dx.doi.org/10.3390/atmos11101069.

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This work aimed to assess and characterize the air quality in what concerns particulate pollution in urban–industrial environments. The main objectives were to study the spatial variability of the deposition flux of particulate pollution identifying areas with higher deposition and to associate the variability with climatological variables and with possible surrounding emitting sources. The method for collecting the deposited particles was based on the standard NF X 43–007. Sampling for particulate pollution took place between April 2015 and February 2016 through seven sampling campaigns. Maps

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Ristic, Mirjana, Sandro Degetto, and Teodor Ast. "Determination of Americium-241 in sediments by gamma spectroscopy." Journal of the Serbian Chemical Society 65, no. 5-6 (2000): 451–56. http://dx.doi.org/10.2298/jsc0006451r.

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A radiochemical method is given for the determination of Am-241 from the global fallout in sediments. The concept of a concentration step to separate Am-241 from the bulk of the sample (1.2 kg wet) by coprecipitation followed by low energy gamma spectroscopy was investigated. A series of experiments with tracer added was performed to measure the recovery of americium by coprecipitation. Also, a number of real samples without tracer were examined and the conditions for the optimum separation are given. The applied gamma method and the conventional, accurate, but tedious, aplha technique via 243

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Zhang, Damao, Zhien Wang, Andrew Heymsfield, Jiwen Fan, and Tao Luo. "Ice Concentration Retrieval in Stratiform Mixed-Phase Clouds Using Cloud Radar Reflectivity Measurements and 1D Ice Growth Model Simulations." Journal of the Atmospheric Sciences 71, no. 10 (2014): 3613–35. http://dx.doi.org/10.1175/jas-d-13-0354.1.

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Abstract Measurements of ice number concentration in clouds are important but still pose problems. The pattern of ice development in stratiform mixed-phase clouds (SMCs) offers an opportunity to use cloud radar reflectivity (Ze) measurements and other cloud properties to retrieve ice number concentrations. To quantify the strong temperature dependencies of ice crystal habits and growth rates, a one-dimensional (1D) ice growth model has been developed to calculate ice diffusional growth and riming growth along ice particle fallout trajectories in SMCs. The radar reflectivity and fallout velocit

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19

Doig, Ronald. "A method for determining the frequency of large-magnitude earthquakes using lake sediments." Canadian Journal of Earth Sciences 23, no. 7 (1986): 930–37. http://dx.doi.org/10.1139/e86-094.

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Eastern Canada has experienced at least five earthquakes of estimated Richter magnitude 6 or greater during the last 350 years. The epicentres are usually under the St. Lawrence River, some 100 km east of Quebec City. Historical records of the earthquake of 1663, possibly the largest of these events, describe high levels of silting in streams for up to several months. A silt horizon in normally organic-rich lake sediments has been found in lakes with separate drainage systems and is interpreted as the 1663 event on the basis of rough sedimentation rates obtained from observation of 137Cs fallo

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20

Ferguson, Eric J., and Megan Brown. "Concurrent Case Review and Retrospective Review Using the Matrix Method are Complementary Methods for Tracking and Improving Timeliness of Care in a Level I Trauma Center." American Surgeon 82, no. 4 (2016): 319–24. http://dx.doi.org/10.1177/000313481608200416.

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Ensuring timely care for patients with moderate-to-severe traumatic injury has been shown to significantly reduce the rate of injury-related mortality. Using concurrent case review and the matrix method described in the 2014 version of Resources for Optimal Care of the Injured Patient, we sought to reduce direct admissions and undertriage at our institution. We believed this would optimize outcomes for patients who may have been significantly impacted otherwise. Several process improvement initiatives were implemented throughout the study period and we calculated direct admission, overtriage,

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21

Smith, J. T., R. T. Clarke, and R. Saxén. "Time-dependent behaviour of radiocaesium: A new method to compare the mobility of weapons test and Chernobyl derived fallout." Journal of Environmental Radioactivity 49, no. 1 (2000): 65–83. http://dx.doi.org/10.1016/s0265-931x(99)00088-0.

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22

Courtland, L. M., S. E. Kruse, C. B. Connor, L. J. Connor, I. P. Savov, and K. T. Martin. "GPR investigation of tephra fallout, Cerro Negro volcano, Nicaragua: a method for constraining parameters used in tephra sedimentation models." Bulletin of Volcanology 74, no. 6 (2012): 1409–24. http://dx.doi.org/10.1007/s00445-012-0603-3.

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23

Golikov, V. Yu. "ANALYSIS OF THE LONG-TERM DYNAMICS OF EXTERNAL DOSES OF THE POPULATION AFTER THE CHERNOBYL ACCIDENT." Radiatsionnaya Gygiena = Radiation Hygiene 11, no. 4 (2018): 39–50. http://dx.doi.org/10.21514/1998-426x-2018-11-4-39-50.

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The paper presents an analysis of the dynamics of individual doses of external exposure among the population living for almost 20 years in the territories affected by the radioactive contamination due to the Chernobyl NPP accident. The dynamics of the average effective dose of the external exposure of the inhabitants in the period of 5 to 20 years after the Chernobyl fallout is well described by processes that consider the radioactive decay of cesium radionuclides and their natural migration. The distribution of individual doses of external exposure among residents, normalized to the average d

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Ramzaev, V. P., and A. N. Barkovsky. "Method for identifying areas of virgin soils using a portable gamma-spectrometer-dosimeter." Radiatsionnaya Gygiena = Radiation Hygiene 13, no. 2 (2020): 123–28. http://dx.doi.org/10.21514/1998-426x-2020-13-2-123-128.

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The dose rate of gamma radiation in air at a height of 1 m above the surface of virgin (undisturbed) soil is the starting point in the basic model that is used to estimate the dose of external radiation to the population living in areas contaminated due to the Chernobyl accident. Today, i.e. more than 30 years after the fallout, the finding of truly virgin lands is a rather difficult task, because many meadows were repeatedly plowed and/or rehabilitated after the accident. The purpose of this study was to develop a quantitative criterion for the detection of virgin soil areas using a portable

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Rosner, G., H. Hötzl та R. Winkler. "Determination of241Pu by low level β-proportional counting. Application to Chernobyl fallout samples and comparison with the241Am build-up method". Journal of Radioanalytical and Nuclear Chemistry Articles 163, № 2 (1992): 225–33. http://dx.doi.org/10.1007/bf02034796.

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Macedonio, G., and A. Costa. "Brief Communication "Rain effect on the load of tephra deposits"." Natural Hazards and Earth System Sciences 12, no. 4 (2012): 1229–33. http://dx.doi.org/10.5194/nhess-12-1229-2012.

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Abstract. Accumulation of tephra fallout produced during explosive eruptions can cause roof collapses in areas near the volcano, when the weight of the deposit exceeds some threshold value that depends on the quality of buildings. The additional loading of water that remains trapped in the tephra deposits due to rainfall can contribute to increasing the loading of the deposits on the roofs. Here we propose a simple approach to estimate an upper bound for the contribution of rain to the load of pyroclastic deposits that is useful for hazard assessment purposes. As case study we present an appli

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Behr, Richard A., and Abdeldjelil Belarbi. "Seismic Test Methods for Architectural Glazing Systems." Earthquake Spectra 12, no. 1 (1996): 129–43. http://dx.doi.org/10.1193/1.1585871.

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An ongoing effort is being made at the University of Missouri-Rolla to develop standard laboratory test methods and codified design procedures for architectural glass under seismic loadings. Recent laboratory work has yielded some promising results regarding the development of an appropriate seismic test method for architectural glass, as well as identifying ultimate limit states that quantify the seismic performance and damage thresholds of various glass types. Specifically, a straightforward “crescendo-like” in-plane dynamic racking test, performed at a constant frequency, has been employed

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Cyr, Dominic, Sylvie Héroux, and Richard Fontaine. "Auditors’ judgment subordination and the theory of planned behavior." Managerial Auditing Journal 35, no. 8 (2020): 1189–211. http://dx.doi.org/10.1108/maj-12-2018-2110.

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Purpose The purpose of this paper is to examine circumstances under which auditors subordinate their judgment. More specifically, the authors investigate factors associated with auditors’ propensity to accept client-preferred accounting methods that conform to accounting standards but do not faithfully represent the entity’s financial position, financial performance and cash flows. Design/methodology/approach Based on the theory of planned behavior (TPB), the authors developed a survey that was sent to auditors at a non-Big 4 audit firm. Findings Main results suggest that auditors tend to agre

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Kanupriya. "COVID-19 and the Indian Textiles Sector: Issues, Challenges and Prospects." Vision: The Journal of Business Perspective 25, no. 1 (2021): 7–11. http://dx.doi.org/10.1177/0972262920984589.

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The Indian textiles sector has been one of the worst hit sectors due to the COVID-19 crisis. In the context of its socio-economic primacy for the Indian economy, which is second only to agriculture, the industry must be given sufficient attention in academic and policy circles. This perspective is an earnest attempt at filling the void in scholarship on the issue of linkages between the Indian textiles sector and the COVID-19 crisis. The unprecedented crisis in the form of COVID-19 flu pandemic has threatened to derail the socio-economic life of people globally. In the current context, this ar

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Meusburger, K., L. Mabit, J. H. Park, T. Sandor, and C. Alewell. "Combined use of stable isotopes and fallout radionuclides as soil erosion indicators in a forested mountain site, South Korea." Biogeosciences 10, no. 8 (2013): 5627–38. http://dx.doi.org/10.5194/bg-10-5627-2013.

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Abstract. The aim of this study is to assess and to validate the suitability of the stable nitrogen and carbon isotope signature as soil erosion indicators in a mountain forest site in South Korea. Our approach is based on the comparison of the isotope signature of "stable" landscape positions (reference sites), which are neither affected by erosion nor deposition, with eroding sites. For undisturbed soils we expect that the enrichment of δ15N and δ13C with soil depth, due to fractionation during decomposition, goes in parallel with a decrease in nitrogen and carbon content. Soil erosion proce

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Meusburger, K., L. Mabit, J. H. Park, T. Sandor, and C. Alewell. "Combined use of stable isotopes and fallout radionuclides as soil erosion indicators in a forested mountain site, South Korea." Biogeosciences Discussions 10, no. 2 (2013): 2565–89. http://dx.doi.org/10.5194/bgd-10-2565-2013.

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Abstract. The aim of this study is to assess and to validate the suitability of the stable nitrogen and carbon isotope signature as soil erosion indicators in a mountain forest site in South Korea. Our approach is based on the comparison of the isotope signature of "stable" landscape positions (reference sites), which are neither affected by erosion nor deposition, with eroding sites. For undisturbed soils we expect that the enrichment of δ15N and δ13C with soil depth, due to fractionation during decomposition, goes in parallel with a decrease in nitrogen and carbon content. Soil erosion proce

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Ramzaev, V. P., A. N. Barkovsky, A. V. Gromov, S. A. Ivanov, and M. V. Kaduka. "FUKUSHIMA FALLOUT IN SAKHALIN REGION, RUSSIA, PART 2: 137Cs AND 134Cs IN GRASSLAND VEGETATION." Radiatsionnaya Gygiena = Radiation Hygiene 11, no. 2 (2018): 7–19. http://dx.doi.org/10.21514/1998-426x-2018-11-2-7-19.

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Samples of vegetation (vascular plants) were collected at 14 grasslands on Kunashir, Iturup, Urup and Paramushir Islands in August–September 2012. All surveyed grasslands were virgin lands with respect to Fukushima fallout. Four plots were used as pastures for cattle in 2012. About 1 kg of green vegetation (mixed grass-forb crop) was taken from each of 13 plots. Seven samples of wormwood (Artemisia sp.) and three samples of Kuril dwarf bamboo (Sasa sp.) of the same mass were collected for comparison. A density of the above ground biomass was estimated at one of the plots. Activities of134Cs an

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Thomson, Steven James, Alvin R. Womac, and Joseph E. Mulrooney. "Reducing Pesticide Drift by Considering Propeller Rotation Effects From Aerial Application Near Buffer Zones." Sustainable Agriculture Research 2, no. 3 (2013): 41. http://dx.doi.org/10.5539/sar.v2n3p41.

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<p>Off-target drift of chemical from agricultural spraying can damage sensitive crops, destroy beneficial insects, and intrude on human and domestic animal habitats, threatening environmental quality. Reduction of drift from aerial application can be facilitated at the edge of a field by offsetting spray ½ or 1 boom width from the field edge or by switching off one boom. For single boom application (and especially when spraying in a cross wind), there is some question whether off-target drift of sprayed crop protection agent is influenced by which boom is spraying and if direction of pro

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Arata, Laura, Katrin Meusburger, Alexandra Bürge, et al. "Decision support for the selection of reference sites using <sup>137</sup>Cs as a soil erosion tracer." SOIL 3, no. 3 (2017): 113–22. http://dx.doi.org/10.5194/soil-3-113-2017.

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Abstract. The classical approach of using 137Cs as a soil erosion tracer is based on the comparison between stable reference sites and sites affected by soil redistribution processes; it enables the derivation of soil erosion and deposition rates. The method is associated with potentially large sources of uncertainty with major parts of this uncertainty being associated with the selection of the reference sites. We propose a decision support tool to Check the Suitability of reference Sites (CheSS). Commonly, the variation among 137Cs inventories of spatial replicate reference samples is taken

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Kulhawik, Katarzyna. "Direct landfill disposal versus Mechanical Biological Treatment (MBT)." Ochrona Srodowiska i Zasobów Naturalnych 27, no. 3 (2016): 19–23. http://dx.doi.org/10.1515/oszn-2016-0015.

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AbstractAfter the implementation of a new waste management system, in which recycling is the most dominating process, landfill disposal still appears to be the most popular method of waste management in Poland, in which waste undergoes gradual decomposition and the influence of climate conditions, for example, air and atmospheric fallout, leads to the production of leachate and biogas emissions, which contribute to continual threats to the natural environment and humans. The above-mentioned threats can be limited by applying suitable techniques of waste treatment before its disposal. A technol

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Johal, Sukhnandan Kaur, and Rajni Mohana. "Effectiveness of Normalization Over Processing of Textual Data Using Hybrid Approach Sentiment Analysis." International Journal of Grid and High Performance Computing 12, no. 3 (2020): 43–56. http://dx.doi.org/10.4018/ijghpc.2020070103.

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Various natural language processing tasks are carried out to feed into computerized decision support systems. Among these, sentiment analysis is gaining more attention. The majority of sentiment analysis relies on the social media content. This web content is highly un-normalized in nature. This hinders the performance of decision support system. To enhance the performance, it is required to process data efficiently. This article proposes a novel method of normalization of web data during the pre-processing phase. It is aimed to get better results for different natural language processing task

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Yu, Kevin, Daniel Ostler, Jonas Fuchtmann, et al. "Clean-AR: Using Augmented Reality for Reducing the Risk of Contamination from Airborne Disease Agents on Surfaces." Current Directions in Biomedical Engineering 7, no. 1 (2021): 6–10. http://dx.doi.org/10.1515/cdbme-2021-1002.

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Abstract A core principle of modern health care is the compliance of hygienic and aseptic techniques in areas that are sensitive to contamination through bacteria, dust, aerosols, and fallout, primarily in operating theatres or around patients with contagious diseases. Keeping track of potentially contaminated surfaces in an environment is a major concern, especially when protecting from COVID-19. This work proposes a novel concept in using 3D sensing technology to track human movement within an indoor area and identifying high-risk contaminated surfaces in real-time. It combines recent Augmen

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Hassan, Aliyu, Yskandar Hamam, and Josiah L. Munda. "Minimizing the Impact of Intermittent Wind Power on Multiperiod Power System Operation with Pumped Hydro Generation." Energies 12, no. 18 (2019): 3583. http://dx.doi.org/10.3390/en12183583.

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In power system operations, unforeseen energy imbalances commonly occur, resulting in unexpected constraints on the system. This leads to a disturbance in normal operation. In systems with integration of large intermittent wind power resources, additional complications are imposed on the system, especially under heavy winds that require immediate measures to minimize possible impact of abrupt wind power fallout. Effective power system fortifications have to be put in place to address the challenges. Wind varies more on the sub-hourly time scales; therefore, sub-hourly dispatch is bound to addr

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Nenadovic, Snezana, Milos Nenadovic, Ivana Vukanac, Aleksandar Djordjevic, Slavoljub Dragicevic, and Milutin Ljesevic. "Vertical distribution of 137Cs in cultivated and undisturbed areas." Nuclear Technology and Radiation Protection 25, no. 1 (2010): 30–36. http://dx.doi.org/10.2298/ntrp1001030n.

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This paper introduces the distribution background and unique characteristics of 137Cs in cultivated and undisturbed areas. The samples were taken from three measuring points of the depth of 1 m. We examined all visible horizons and determined their classifications. There were four horizons in one profile. All four horizons had a different zone thickness. 137Cs is an artificial radionuclide that has been produced primarily as a result of atmospheric thermonuclear weapon tests since the 1950. Also, the great amount of 137Cs (~85 PBq) was released in the atmosphere during the Chernobyl accident.

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Machili, Ifigeneia. "‘it’s not written on parchment but it’s the way to survive’: Official and unofficial use of languages in MNCs." Language in Focus 1, no. 2 (2015): 54–84. http://dx.doi.org/10.1515/lifijsal-2015-0009.

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Abstract The globalization of economic activity and the escalating economic crisis impact on the expansion and shrinking of businesses along with their management of human resources and language management strategies. Struggling to remain competitive and survive, businesses resort to a range of language policies when employees make their own everyday language choices, a divergence that is worth investigating. Against this backdrop, this paper takes a mixed method approach and reports on the official and unofficial uses of English as a lingua franca and Greek as the local language in multinatio

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Bauziene, Ieva, Jonas Mazeika, and Zana Skuratovic. "Fallout 137Cs and natural 40K as tracers of topsoil development during slope processes — a case study from the Daugai environs, Southern Lithuania." Geochronometria 40, no. 2 (2013): 126–33. http://dx.doi.org/10.2478/s13386-013-0101-1.

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AbstractInvestigations of soil erosion by 137Cs method brings uncertainties of different nature. The estimation of the 137Cs local inventory is associated with problems of data comparison and instrumental errors. In order to avoid systematic errors, the rate of soil erosion determined by the 137Cs method is compared with the values obtained for other radioactive elements. Soil parameters must be regarded too. The aim of the work was to test the character of 137Cs and 40K distribution in the topsoil vertical section for determination erosion-accumulation type and ratio in different time spans.

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CHINTU, R., P. L. MAFONGOYA, T. S. CHIRWA, E. KUNTASHULA, D. PHIRI, and J. MATIBINI. "PROPAGATION AND MANAGEMENT OF GLIRICIDIA SEPIUM PLANTED FALLOWS IN SUB-HUMID EASTERN ZAMBIA." Experimental Agriculture 40, no. 3 (2004): 341–52. http://dx.doi.org/10.1017/s0014479704001838.

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Gliricidia sepium features prominently as a soil replenishment tree in planted coppicing fallows in eastern Zambia. Its usual method of propagation, through nurseryseedlings, is costly and may possibly hinder wider on-farm adoption. We compared fallows propagated by potted and bare root seedlings, direct seeding and stem cuttings, in terms of tree coppice biomass production, soil inorganic N availability and post-fallow maize yields under semi-arid conditions. We hypothesized that cutting fallows initially in May (off-season) would increase subsequent seasonal coppice biomass production as opp

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Aalto, Rolf, and Charles A. Nittrouer. "210 Pb geochronology of flood events in large tropical river systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1966 (2012): 2040–74. http://dx.doi.org/10.1098/rsta.2011.0607.

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Floodplain sedimentation removes particles from fluvial transport and constructs stratigraphic records of flooding, biogeochemical sequestration and other aspects of the environmental history of river basins—insight that is enhanced by accurate geochronology. The natural fallout radionuclide 210 Pb, often employed to date lacustrine and marine sediments, has previously been used to determine floodplain accumulation rates over decadal-to-century time scales using the assumption that both input concentration and sediment accumulation rates are constant. We test this model in approximately 110 co

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Grasty, R. L., J. E. Glynn, and J. A. Grant. "The analysis of multichannel airborne gamma‐ray spectra." GEOPHYSICS 50, no. 12 (1985): 2611–20. http://dx.doi.org/10.1190/1.1441886.

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Experimental potassium, uranium, and thorium gamma‐ray spectra covering a range of equivalent aircraft altitudes from 0 to 112 m were derived from measurements on large radioactive concrete calibration pads using plywood sheets to simulate the absorption effects of the air. A mathematical analysis of all three radioelement spectra showed they are composed of two basic spectral components which are added in different proportions dependent on the altitude of the aircraft above the ground. Above an energy of 0.662 MeV, the two‐component spectral model represented accurately the observed gamma‐ray

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Kazakova, Elizaveta A., Polina Yu Volkova, and Stanislav A. Geras’kin. "Changes of the genetic structure in chronically irradiated scots pine populations." Ecological genetics 15, no. 2 (2017): 50–61. http://dx.doi.org/10.17816/ecogen15250-61.

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Background. The vast forest areas were affected by radioactive fallout of the Chernobyl accident. Data about the long-term effects of chronic radiation exposure are insufficient, as well as knowledge about its influence on the genetic structure of populations. Study of isozyme polymorphism allows us to identify how chronic low-dose radiation exposure affects the genetic structure of plant populations and to develop new methods for assessing the biological effects of anthropogenic impact on terrestrial ecosystems. Materials and methods. The study was conducted in six sites in the Bryansk region

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Röllin, Stefan, Hans Sahli, Lars Gnägi, and José A. Corcho Alvarado. "Determination of Plutonium and Uranium Radionuclides in Glacier Ice Samples by MC-ICP-MS." CHIMIA International Journal for Chemistry 74, no. 12 (2020): 989–94. http://dx.doi.org/10.2533/chimia.2020.989.

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A radiochemical procedure for the determination of plutonium (Pu) and uranium (U) radionuclides in ice samples by multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) is presented. Pu and U radionuclides are preconcentrated by coprecipitation and then separated by extraction chromatography. The purified Pu and U fractions are analyzed by MC-ICP-MS. Detection limits of 2 × 10 –3 and 3 × 10–6 mBq kg–1 were achieved for 239Pu and 236U, respectively. Surface ice samples collected from the Gauli glacier (Switzerland) were analyzed by this method. The surface of the Gauli Glacier

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Vigneshwaran, L. V., and K. G. Lalitha. "In silico evaluation of antidiabetic molecules of the seeds of Swietenia mahagoni Jacq." International Journal of Pharmaceutical and Phytopharmacological Research 6, no. 1 (2017): 41. http://dx.doi.org/10.24896/eijppr.2016617.

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Diabetes is a chronic metabolic disorder. WHO has projected that India will have around 57 million persons with diabetes by 2025. Swietenia mahagoni Jacq. (Meliaceae) is a large, deciduous tree whose seeds and bark were used for diabetes traditionally. The in silico hyperglycemic activity of the seeds of Swietenia mahagoni Jacq was studied by using AUTODOCK version 4.2 which reveals the putative binding sites of the compound to target protein. Homology modeling was done using MODELLER for the crystal structure of sodium/glucose co-transporter 2(SGLT2). The putative binding modes of compounds w

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Oguntoke, Olusegun, Matthew E. Ojelede, and Harold J. Annegarn. "Frequency of Mine Dust Episodes and the Influence of Meteorological Parameters on the Witwatersrand Area, South Africa." International Journal of Atmospheric Sciences 2013 (November 20, 2013): 1–10. http://dx.doi.org/10.1155/2013/128463.

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Aeolian dispersal of dust from gold mine tailing storage facilities impacts negatively on amenities, human health, and the environment of the Witwatersrand region, South Africa. The present study adopted a multivariate analytical method to quantify the effect of specific meteorological parameters on dust fall emissions, monitored at 22 sites in the central Witwatersrand area. Using meteorological and dust fall data from 2001 to 2010, the relationships between weather and dust fallout deposition rates were explored across the sites at different seasons. Dust deposition rate varied among seasons

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Skipperud, Lindis. "Plutonium in the Arctic Marine Environment — A Short Review." Scientific World JOURNAL 4 (2004): 460–81. http://dx.doi.org/10.1100/tsw.2004.100.

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Anthropogenic plutonium has been introduced into the environment over the past 50 years as the result of the detonation of nuclear weapons and operational releases from the nuclear industry. In the Arctic environment, the main source of plutonium is from atmospheric weapons testing, which has resulted in a relatively uniform, underlying global distribution of plutonium. Previous studies of plutonium in the Kara Sea have shown that, at certain sites, other releases have given rise to enhanced local concentrations. Since different plutonium sources are characterised by distinctive plutonium-isot

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Zhou, Weijian, Alfred Priller, J. Warren Beck, et al. "Disentangling Geomagnetic and Precipitation Signals in an 80-kyr Chinese Loess Record of 10Be." Radiocarbon 49, no. 1 (2007): 137–58. http://dx.doi.org/10.1017/s0033822200041977.

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The cosmogenic radionuclide 10Be is produced by cosmic-ray spallation in Earth's atmosphere. Its production rate is regulated by the geomagnetic field intensity, so that its accumulation rate in aeolian sediments can, in principle, be used to derive high-resolution records of geomagnetic field changes. However, 10Be atmospheric fallout rate also varies locally depending on rainfall rate. The accumulation rate of 10Be in sediments is further complicated by overprinting of the geomagnetic and precipitation signals by 10Be attached to remobilized dust, which fell from the atmosphere at some time

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