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Letteratura scientifica selezionata sul tema "Central Physical characteristics"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 30 gennaio 2023

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Articoli di riviste sul tema "Central Physical characteristics"

Leonel, Magali, Taila Santos de Freitas e Martha Maria Mischan. "Physical characteristics of extruded cassava starch". Scientia Agricola 66, n. 4 (agosto 2009): 486–93. http://dx.doi.org/10.1590/s0103-90162009000400009.

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Considering the importance of cassava starch for Brazilian industries, the current work aimed at evaluating the effects of extrusion parameters on the physical characteristics, mainly viscosity properties of extruded cassava starch. A factorial central composite design (2³) with three independent variables and the response surface methodology were used to evaluate the results of expansion index, specific volume, water absorption index, water solubility index, color and paste properties, according to the variations in the moisture content, barrel temperature and screw speed. Results indicated that barrel temperature influenced the expansion index, specific volume, water absorption index, all the color parameters, the initial viscosity, peak and final viscosity. Feed moisture influenced the specific volume, color parameters, final viscosity and retrogradation. The screw speed had effects on water absorption index, color components as well as on the final viscosity and retrogradation of extruded starch. High moisture, low screw speed and intermediate temperature provided lower starch degradation, which is desirable for pre-cooked starch.

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Almukhtar, Emad, Suhair A. Musa, Shabad Sabri e Nadia Modafar Ali. "Physical and chemical characteristics of the lower reaches of river Diyala, central Iraq". Journal of Environmental Science and Health . Part A: Environmental Science and Engineering 21, n. 6 (agosto 1986): 537–50. http://dx.doi.org/10.1080/10934528609375310.

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Jeffries, Dean S., John R. M. Kelso e Ian K. Morrison. "Physical, Chemical, and Biological Characteristics of the Turkey Lakes Watershed, Central Ontario, Canada". Canadian Journal of Fisheries and Aquatic Sciences 45, S1 (19 dicembre 1988): s3—s13. http://dx.doi.org/10.1139/f88-262.

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The Turkey Lakes Watershed (TLW) in central Ontario was selected for intensive research into the effects of the long-range transport of air pollutants (primarily acidic deposition) at a site on the Canadian Shield having both vulnerable terrain and an undisturbed Great Lakes forest type. The terrestrial and aquatic resources within the basin are representative of the surrounding region of Algoma, although for Ontario, it does have high relief (290 m) and high annual precipitation (>1200 mm). The TLW contains a chain of four lakes (five distinct lake basins) that range from 5.8 to 52.0 ha in area and 2.2 to 12.2 m in mean depth. The lakes are dimictic and, except for the deepest lake, experience dissolved oxygen depletion in undisturbed bottom waters. There is a gradient in the major ion composition of lakes within the TLW, the most dilute waters occurring at high elevations. Calcium levels increase from 55 to 138 μmol∙L−1 down the chain. Sulphate is the dominant lake water anion in the headwater lake, while alkalinity dominates in the lowest lake. Phosphorus is the limiting nutrient in these lakes; NO3-N levels are relatively high (7.9–16.4 μmol∙L−1) because the terrestrial basin exhibits low utilization of this nitrogen species. Seasonal and episodic variations in surface water composition can be large. The headwater lake contains no fish; however, fish communities in the lower three lakes (composed of 8-11 species) are typical of the Algoma region. The distribution of benthic organisms is primarily a function of lake depth and presence/absence of fish rather than variations in water chemistry. Zooplankton species composition is similar across all lakes, and cyanophytes are the dominant algae throughout. The forest is an uneven-aged, mature-to-overmature, old-growth tolerant hardwood stand. The principal tree species is sugar maple (90%) with lesser amounts of other hardwoods (9%, usually yellow birch) and various conifers (1%). Production is typical of forest at this northerly latitude (47°N). Foliar bioelement concentrations are generally similar to those observed at Hubbard Brook, New Hampshire.

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Golub, T., L. Molchanov, S. Semykin e V. Vakulchuk. "STUDY OF THE PHYSICAL CHARACTERISTICS OF STREAMS EMERGING FROM COHERENT-TYPE NOZZLES". Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences) 2, n. 41 (19 dicembre 2022): 19–25. http://dx.doi.org/10.31319/2519-2884.41.2022.2.

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The main controlling factor in oxygen converting with top blowing is the stream of oxygen, which penetrate the metal bath and promotes the flow of heat, mass exchange and chemical processes. The inherent characteristics of the oxygen jet are created by the nozzle tip with nozzles that may differ in design depending on the issue they solve. In the electrometallurgical industry, coherent nozzles consisting of a central nozzle for supplying the main oxygen jet and a surrounding annular nozzle for supplying shielding gas, mainly methane, are used to ensure deep penetration of the oxygen jet into the melt and to improve the mixing processes of the bath. This design of the nozzle, according to available published data, ensures the elongation of the main jet while preserving its momentum. The paper presents the results of a study using a modified liquid manometer of the features of the action of jets flowing out of nozzles of a coherent type of different designs (the ratio of the outer and central parts of 25%, 50% and 75%) under blowing conditions that correspond to the conditions of top blowing during industrial oxygen conversion. The conducted research made it possible to establish that when the share of the peripheral part is more than 50%, the main controlling link of the jet is the central nozzle, and when the share is smaller, it is the peripheral slotted part. The jets flowing out of the nozzles of the coherent type with the share of the peripheral part more than 50% have a greater force of action on the liquid compared to the force of action of the corresponding central nozzle, by the amount from 33 to 74%relatively. The design of nozzles with a share of the peripheral part of the order of 25% practically does not create conditions for improving the power characteristics of the jet. According to the results of the established conclusions, it is possible to recommend the use of nozzles of the coherent type with a share of the peripheral part of more than 50% as nozzles, for example, of the second row for top blowing lance, which have a slag-forming effect, contributing to better penetration into the melt compared to the corresponding cylindrical ones, that will intensify the processes of mixing and slag formation in the bath

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T. Kamalaja et al.,, T. Kamalaja et al ,. "Physical and Chemical Quality Characteristics of Newly Released Rice Varieties of Central Telangana Zone". International Journal of Agricultural Science and Research 7, n. 4 (2017): 309–12. http://dx.doi.org/10.24247/ijasraug201738.

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KALANGUTKAR, Niyati G., Sridhar D. IYER e Dandaydayudapani ILANGOVAN. "Physical Properties, Morphology and Petrological Characteristics of Pumices from the Central Indian Ocean Basin". Acta Geologica Sinica - English Edition 85, n. 4 (agosto 2011): 826–39. http://dx.doi.org/10.1111/j.1755-6724.2011.00488.x.

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Merello, Manuel, Leonardo Bronfman, Guido Garay, Lars-Åke Nyman, Neal J. Evans II e C. Malcolm Walmsley. "PHYSICAL CHARACTERISTICS OF G331.5-0.1: THE LUMINOUS CENTRAL REGION OF A GIANT MOLECULAR CLOUD". Astrophysical Journal 774, n. 1 (14 agosto 2013): 38. http://dx.doi.org/10.1088/0004-637x/774/1/38.

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Martin, A., T. Mendizabal, J. P. Zaballos e J. Benayas. "Micromorphological, physical, and chemical characteristics of leaching poorly drained flat soils of Central Spain". Arid Soil Research and Rehabilitation 9, n. 2 (aprile 1995): 117–35. http://dx.doi.org/10.1080/15324989509385880.

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O'Connor, W. K., e D. C. Dahlin. "Ore mineralogy and physical characteristics of the Sheep Creek prospect, north-central Alaska Range". Ore Geology Reviews 6, n. 2-3 (maggio 1991): 153–69. http://dx.doi.org/10.1016/0169-1368(91)90019-4.

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Zarokanellos, Nikolaos D., Vassilis P. Papadopoulos, Sarantis S. Sofianos e Burton H. Jones. "Physical and biological characteristics of the winter-summer transition in the Central Red Sea". Journal of Geophysical Research: Oceans 122, n. 8 (agosto 2017): 6355–70. http://dx.doi.org/10.1002/2017jc012882.

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Tesi sul tema "Central Physical characteristics"

Bone, Stephanie A. "Physical activity habits of adults in east central Indiana related to their demographic characteristics". Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1339141.

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In 1993, it was estimated that poor diet and physical inactivity lead to 300,000 deaths a year in the United States (52). In 1996, the first report on Physical Activity and Health by the Surgeon General was published (80). The major recommendation revealed by the Surgeon General Report was that every U.S. adult should accumulate a moderate amount of physical activity on most, preferably all, days of the week. Strong efforts to communicate the importance of physical activity to the United States population have been somewhat successful. However, trends still fall far short from the goal set forth by Healthy People 2010. Nearly 1 in 4 adults reported no leisure-time physical activity in 2004 (45). The goal is for 20% of the U.S. population to report no leisure-time physical inactivity by the year 2010 (79).It is evident that a large amount of physical activity data and statistics exist. However, physical activity has been traditionally assessed using self-report methods (67). In 1999, the Cooper Institute hosted a conference titled Measurement of Physical Activity. This conference brought leaders in physical activity assessment together with measurement specialists to discuss issues and future direction in physical activity assessment. It was a consensus among researchers that assessing physical activity is a challenging task confounded by various purposes for assessment, populations, and assessment methods. In addition, they found a strong need for the development of assessment devices with sound psychometric properties (89). Self-report instruments have been identified to have numerous reliability and validity limitations.The purpose of this study was to objectively measure the physical activity (pedometer counted steps per day) of adults in East Central Indiana and to assess how these results relate to demographic characteristics and general health indices. Pedometer-measured physical activity (steps) was recorded over a 7 day period and was compared to physical activity data from the IPAQ and to national data obtained via surveys. All subjects also completed a demographic survey.The percentage of subjects who were sedentary was 14.0% which is less than national data demonstrates. Mean steps/day were significantly associated with age, certain income levels, and marital status. An increase in age resulted in a decrease in the mean steps/day. Mean steps/day were also significantly less in the $25,000-$39,999 income level than the >$80,000 group. Those who were either single, divorced, or widowed completed significantly more steps/day than married subjects. Males participated in significantly more vigorous MET•min/week than females. Age was significantly negatively correlated with vigorous MET•min/week, and walking MET•min/week. BMI and income level were negatively correlated with walking MET•min/week. Non-married subjects participated in significantly more vigorous MET•min/week than non-married subjects. The IPAQ classifications were found to agree with the physical activity data from the pedometer measured data. However the relationship (Spearman correlation = 0.325) was relatively weak.
School of Physical Education, Sport, and Exercise Science

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Pretorius, R. J., S. vd M. Louw, P. Venter e Westhuizen C. Vd. "The impact of varying aphid populations in different shadehouse structures on some physical characteristics of head lettuce, cultivated in the central Free State (South Africa)". Journal for New Generation Sciences, Vol 10, Issue 1: Central University of Technology, Free State, Bloemfontein, 2012. http://hdl.handle.net/11462/602.

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Published Article
Direct feeding damage to head lettuce (Lactuca sativa L.) by varying aphid populations in two differently constructed shadehouse structures (fully- and partially covered) was examined. Fresh lettuce head weight, the number of lettuce leaves formed, and the number of lettuce leaves infested with aphids were compared between the two structures. Warmer months showed a significant lower fresh lettuce head weight in the fully covered structure with more aphid-infested leaves. During June/September, the mean number of aphid-infested leaves and aphid infestation levels were significantly higher in the partially covered structure. Visible feeding damage to the lettuce crop was restricted, but asymptomatic damage in terms of a decrease in head weight did occur under severe infestation levels.

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Habecker, Melinda Ann. "Physical, chemical, and spatial characteristics of a fragiochrept with windthrow microtopography in north central Wisconsin". 1988. http://catalog.hathitrust.org/api/volumes/oclc/19686742.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1988.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 128-129).

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Hsu-Yuan-Ming e 許原銘. "Municipal waste physical composition characteristic analysis in central Taiwan". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46gacr.

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碩士
弘光科技大學
環境工程研究所
103
Municipal solid waste (MSW) receives a great deal of attention in recent years due to economic growth and environmental awareness. This research studied physical composition of A city’s MSW and the A city is located at central Taiwan. The average apparent density of MSW is about 155.9 kg/m3. Contents of paper, plastic, food waste, textiles, gardener waste, leather and rubber, metal, glass, ceramics, and miscellaneous inorganics are 37.81, 25.29, 21.10, 5.95, 6.84, 1.14, 0.34, 0.95, 0.07, 0.14, and 0.07%, respectively. Paper (37.81%) can be classified as recyclable paper (10.65%) and non-recyclable paper (27.16%). Recyclable paper includes paper (6.50%), tetra pak containers (0.20%), disposable paper tableware (1.66%), paper containers (0.67%) and others paper containers (1.62%). Non-recyclable paper includes diapers (11.60%), medical liners (3.70%) and other waste papers (11.86%). Plastics (25.29%) include recyclable plastics (23.89%) and non-recyclable plastics (1.40%). Recyclable plastics include PVC containers (0.55%), PE containers (0.27%), PP containers (1.16%), PET containers (0.24%), PS containers (0.37%), un-expansible PS containers PS containers (0.15%), other plastics containers (0.0%), biomass plastic containers (0.0%), shopping plastic bags (thickness ≤ 0.06 mm) (8.75%), and shopping plastic bags (thickness≥ 0.06 mm) (12.40%). Non-recyclable plastics include expansible PS containers (0.45%) and other plastic (0.95%). Food waste (21.10%) includes non-compostable food waste (10.67%) and compostable food waste (10.43%).

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Libri sul tema "Central Physical characteristics"

Heimann, David C. Physical, chemical, and biological characteristics of three reservoirs in west-central Missouri, 1991-93. Rolla, Mo: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Heimann, David C. Physical, chemical, and biological characteristics of three reservoirs in west-central Missouri, 1991-93. Rolla, Mo: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Heimann, David C. Physical, chemical, and biological characteristics of three reservoirs in west-central Missouri, 1991-93. Rolla, Mo: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Marron, D. C. Field and laboratory data describing physical and chemical characteristics of metal-contaminated flood-plain deposits downstream from lead, west-central South Dakota. Denver, Colo: Dept. of the Interior, U.S. Geological Survey, 1988.

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A, Payne G., e Geological Survey (U.S.), a cura di. Physical characteristics of stream subbasins in the Pomme De Terre River Basin, west-central Minnesota. [Reston, Va.?]: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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Geological Survey (U.S.), a cura di. Field and laboratory data describing physical and chemical characteristics of metal-contaminated flood-plain deposits downstream from lead, west-central South Dakota. Denver, Colo: Dept. of the Interior, U.S. Geological Survey, 1988.

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Khursheed, Faraz, e Marc O. Maybauer. Neuropathic Pain. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190271787.003.0012.

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Neuropathic pain is a common condition that arises from injury anywhere along the somatosensory axis. Although the presentation may vary based on mechanisms and locations of injury, most patients have characteristic burning, shocklike, lancinating pain, most often in the distribution of peripheral and spinal nerves or distal extremities. Various peripheral and central processes aggravate pain through abnormal impulse generation, modulation, and processing. Common conditions include complex regional pain syndrome, diabetic neuropathy, postherpetic neuralgia, spondylotic radiculopathy, and central pain syndromes. A detailed history and physical examination will aid in differentiating various neuropathic pain conditions. Neuropathic pain is best managed using a true multidisciplinary approach.

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Murray, Sean. That “Weird and Wonderful Posture”. A cura di Blake Howe, Stephanie Jensen-Moulton, Neil Lerner e Joseph Straus. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199331444.013.41.

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Sometime in the late 1820s to early 1830s, a little-known white theatre performer named Thomas Dartmouth Rice modeled a blackface song and dance on a “crippled Negro”; his performances of “Jump Jim Crow” became extraordinarily popular in pre–Civil War America. The extensive literature on these performances has generally been silent on two key characteristics of the phenomenon: the importance of “audience” performance to the act’s popularity and reception and the fact that the pleasure of jumping “Jim Crow” was rooted in the spectacular performance of disability by presumably able-bodied people: usually white and usually male. This essay demonstrates that blackface performance almost always involved performances of disability (physical and cognitive), which constructed both privileged white citizens and stigmatized defective Negroes, unworthy of citizenship. As such, they participated in contemporary discourses about citizenship in which race and disability play central and deeply entwined roles.

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Elliott, Dyan. Gender and The Christian Traditions. A cura di Judith Bennett e Ruth Karras. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199582174.013.011.

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Classical and medieval thinkers had much to say about gendered topics, including proper social roles and relationships for men and women, differing physical and psychological make-ups, and behaviors that might cause blurring between characteristics understood to belong to each sex. The theological arguments and pastoral direction of the Middle Ages relied heavily on precedents drawn from early Christianity, making an understanding of the apostolic and patristic periods essential when examining gender issues. This essay, therefore, addresses debates from both early Christianity and the central Middle Ages, concentrating primarily on discussions about the merits of virginity versus celibacy, but also treating discourse on "virile" women and the effects of the rediscovery of Aristotelian thought on ideas about procreation and the female body. Since these discussions often took place as their authors addressed contemporary crises, they offer an opportunity to examine Christian society's shifting, and often competing, values, especially those pertaining women.

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Capitoli di libri sul tema "Central Physical characteristics"

Abazov, Rafis. "Physical Characteristics". In The Palgrave Concise Historical Atlas of Central Asia, 2–3. New York: Palgrave Macmillan US, 2008. http://dx.doi.org/10.1057/9780230610903_1.

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Ceríaco, Luis M. P., Bruna S. Santos, Ricardo F. de Lima, Rayna C. Bell, Sietze J. Norder e Martim Melo. "Physical Geography of the Gulf of Guinea Oceanic Islands". In Biodiversity of the Gulf of Guinea Oceanic Islands, 13–36. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06153-0_2.

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AbstractThe Gulf of Guinea, in the Atlantic coast of Central Africa, has three oceanic islands that arose as part of the Cameroon Volcanic Line. From northeast to southwest these are Príncipe (139 km2), São Tomé (857 km2), and Annobón (17 km2). Although relatively close to the adjacent mainland, the islands have distinct climactic and geomorphologic characteristics, and have remained isolated throughout their geological history. Consequently, they have developed a unique biodiversity, rich in endemic species. We provide an integrated overview of the physical setting of the islands, including their geographic location, geological origin, topography, geology and soils, climate zones, and prevailing wind and ocean currents—key features that underlie the evolution of their biodiversity.

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Bampzelis, D., e T. Karacostas. "Radar Derived Storm Characteristics Over Central Greece". In Advances in Meteorology, Climatology and Atmospheric Physics, 27–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29172-2_5.

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Džafić, Amela, Jasmin Mulić, Asima Akagić e Sanja Oručević Žuljević. "Effects of Wet Gluten Adjustment on Physico-Chemical and Rheological Characteristics of Three Types of Wheat Flour". In 10th Central European Congress on Food, 211–22. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04797-8_19.

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Sfiri, E., e T. Karacostas. "Hailstorm Characteristics Over the Area of Central Macedonia During the Period 1998–2008". In Advances in Meteorology, Climatology and Atmospheric Physics, 277–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29172-2_40.

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Tymbanidis, K., D. Bampzelis, T. Karacostas e E. Chatzi. "A Comparison of Storm Characteristic Between Mountainous and Plain Areas within Central Macedonia". In Advances in Meteorology, Climatology and Atmospheric Physics, 333–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29172-2_47.

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Karacostas, T., V. Spiridonov, D. Bampzelis, I. Pytharoulis, G. Karoutsos e C. Sideropoulou. "Synoptic, Dynamic and Thermodynamic Characteristics of the 10th August 2008 Intensive Storm Over North-Central Greece". In Advances in Meteorology, Climatology and Atmospheric Physics, 145–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29172-2_21.

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Della Bella, Valentina, Marcello Bazzanti, Maria Giuseppina Dowgiallo e Mauro Iberite. "Macrophyte diversity and physico-chemical characteristics of Tyrrhenian coast ponds in central Italy: implications for conservation". In Pond Conservation in Europe, 85–95. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-90-481-9088-1_8.

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Du, Meifang. "The Research on Fishery Metadata in Bohai Sea Based on Semantic Web". In Proceeding of 2021 International Conference on Wireless Communications, Networking and Applications, 234–40. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2456-9_25.

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AbstractIn this paper, a data sharing and management mechanism suitable for the characteristics of fishery industry was established to clarify the phenomenon of heterogeneous Web data and Information Island based on Semantic Web technology, and unified interface specification information platform was established. Form the specification of metadata from the physical and chemical database, developing and publishing the corresponding metadata management tool, assisting, assisting and guiding a specialized database centre, completing the construction of metadata from the professional database.

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Blekking, Jordan, Stacey Giroux, Kurt Waldman e Tom Evans. "Spatial Characteristics of Urban Food Systems and Food Retailers in Smaller Urban Areas". In Transforming Urban Food Systems in Secondary Cities in Africa, 151–67. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93072-1_8.

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AbstractThe types of food retailers operating in cities in sub-Saharan Africa and their physical distribution contribute to the spatial characteristics of food systems. As smaller urban areas expand in terms of both population and spatial extent, the importance of ensuring both physical and financial access to food throughout a city is critical for ensuring sustainable food systems. In this chapter, we use data collected from two smaller cities, Mumbwa and Monze, Zambia. Using spatial analysis, we investigate how household food purchasing behaviour differs based on the use of three different types of food retailers: traditional markets, small grocers and street vendors. We find significant hotspots of food purchasing behaviour in both Mumbwa and Monze; specifically, households located in the centre of each city purchase primarily from traditional markets, while households near the periphery use a mixture of street vendors and small grocers. Mumbwa households located in hotspots of street vendor purchases have the worst household food access, while Monze households have relatively similar food access regardless of whether they are in hotspots. Although spatial characteristics are often absent from studies related to food security in sub-Saharan Africa, our case study results suggest that food access not only varies spatially, but so does the relationship between households and the food retailers they purchase from. Our findings contribute to the ongoing discussion surrounding transformation of food systems, the emergence of smaller African urban areas and how spatial analysis methods can be applied to study food access.

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Atti di convegni sul tema "Central Physical characteristics"

Koňáková, Dana, Eva Vejmelková, Vojtěch Pommer, Martin Keppert, Anton Trník e Robert Černý. "Physical and chemical characteristics of heat resistant materials based on high alumina cement". In CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2021 (CEST 2021). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0069565.

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Istighfaroh, Maulina, e Lukman Fauzi. "Clinical Characteristics and Positivity Rate of COVID-19 in Semarang, Central Java, Indonesia". In Proceedings of the 5th International Conference on Sports, Health, and Physical Education, ISMINA 2021, 28-29 April 2021, Semarang, Central Java, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.28-4-2021.2312220.

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Fredriksson, David W., M. Robinson Swift, James D. Irish e Barbaros Celikkol. "The Heave Response of a Central Spar Fish Cage". In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28441.

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As the aquaculture industry considers moving into the open ocean, understanding the dynamic response of fish containment structures becomes critical. Identification of possible resonant conditions and motion characteristics is necessary for system structural integrity and maximizing fish survivability. In this study, heave (vertical motion) free release tests of a central spar fish cage were conducted using a combination of physical and finite element models and field observations. These tests were performed to investigate the added mass, damping ratio and natural period of the system in the vertical direction. The test results were analyzed considering both linear and nonlinear damping. The comparison of these tests show that (1) the damped natural period of this fish cage is longer than 20 seconds, (2) the numerical model underestimates the damping and the cage oscillates longer and at a higher frequency than observed with the field tests and (3) the physical model is nearly critically damped near equilibrium due to Reynolds number effects at the model scale.

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Indarjo, Sofwan, Agus Suwandono, Sulistiyani Sulistiyani e Zahroh Shaluhiyah. "Characteristics of the Home Environment Elementary School Students in the Filariasis Endemic Area, Pekalongan City". In Proceedings of the 5th International Conference on Sports, Health, and Physical Education, ISMINA 2021, 28-29 April 2021, Semarang, Central Java, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.28-4-2021.2312210.

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Mahdi, Ameen Mohammed, e Sarhan Ali Salman. "Assessment of some heavy metals and study some physical and chemical characteristics of drinking water in the central water purification station, Samarra city, Iraq". In PROCEEDING OF THE 1ST INTERNATIONAL CONFERENCE ON ADVANCED RESEARCH IN PURE AND APPLIED SCIENCE (ICARPAS2021): Third Annual Conference of Al-Muthanna University/College of Science. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0093359.

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Gan, Yunhua, e Zeliang Yang. "Characteristics of Small Diffusion Flames in a Confined Space". In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18039.

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With the demand of smaller scale and higher energy density power sources, Micro Energy System has received more and more concern in last few years. Flame shape is an important characteristic of laminar diffusion flames. Experiments were performed to investigate the small diffusion flames burning, liquid ethanol in quiescent, room-temperature air. Ethanol diffusion flames were stabilized on top of vertical capillary tubes. Test conditions involved burner inner diameters of 1.0 mm, and fuel mass flowrates of 1.8–2.25 ml/h. The laminar diffusion flame in a confined physical environment is considered with fuel (ethanol) admitted as a central jet and air as a co-flowing annular jet. The burner outer diameter is 2mm, and inner diameter of the tube outside the burner is 8.8mm. The extremely small ethanol flowrates were accurately controlled by a syringe pump. The flame shapes were visually observed using a high speed CCD camera. Normalized lengths of flames were correlated with Reynolds number, and Normalized widths of flames were correlated with Reynolds number and Froude number respectively. The experimental results were compared with classical theory for diffusion flames.

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Zimmermann, Stephan, Jochen Schein, Georg Mauer e Karl-Heinz Rauwald. "Investigations and New Physical Behaviour of Special DC-Plasma Generator Mettech “Axial III”". In ITSC2018, a cura di F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau e J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0818.

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Abstract The use of plasma generators for thermal surface coating has grown enormously in the field of thermal insulation and wear-resistant coatings, especially with regard to deposition of refractory oxide ceramic layers using powders such as aluminum oxide, alumina / titania, zirconia and chromium oxide. Nonetheless, innovative plasma sources are still being developed to provide more-efficient, tailor-made solutions due to their specific characteristics. A brief overview of the DC-plasma generator Mettech “Axial III” are shown, which generator are allowed to use the central injection (advantage for suspension applications). In this paper first diagnostic results characterized the physical behaviour and special plasma symmetry, which can be described by three partial plasma jets. Thereby computer tomography (CT), high speed camera investigations coupled with time-adjusted current-voltage measurements, particle parameter detections and first resulting coatings are presented and discussed. The complete paper concludes with an outlook for future diagnostic measurements and possible future applications for this DC-plasma torch.

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Jariono, Gatot, Nurhidayat Nurhidayat, Eko Sudarmanto, Ardhian Kurniawan, Chandra Triadi e Maimunah Anisa. "The Role of Teachers In Reducing Hyperactive Behavior of Children with Special Needs Is Reviewed from The Characteristics of Speed And Balance". In Proceedings of the 5th International Conference on Sports, Health, and Physical Education, ISMINA 2021, 28-29 April 2021, Semarang, Central Java, Indonesia. EAI, 2021. http://dx.doi.org/10.4108/eai.28-4-2021.2312247.

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Sivapirakasam, S. P., R. Anand, G. R. Kannan e K. R. Balasubramanian. "Optimization of Biodiesel Production Using RSM and Study of Combustion Characteristics on DI Diesel Engine". In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86777.

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Biodiesel is a monoalkyl ester of fatty acid of long chain derived from vegetable oil or animal fats. In this present investigation deccan hemp oil, a non-edible vegetable oil is used as feed stock for the production of biodiesel. Response surface methodology based on Central Composite Rotatable Design (CCRD) is used to analyze the interaction effect and to optimize the transesterification reaction variables such as temperature, catalyst concentration and oil to methanol ratio on biodiesel yield. A quadratic model is developed based on the CCRD, correlating the yield of biodiesel with reaction variables. The predicted yield by optimization condition is found very close to the experimental values. The optimum condition for biodiesel production is found at the temperature of 55° C, oil to methanol ratio of 1:9, catalyst of 0.5%, stirring speed of 350 rpm and a reaction time of 3h gave the maximum yield of 95%. The physical and chemical properties of deccan hemp oil and its methyl ester is determined as per ASTM standards. The produced biodiesel showed shorter ignition delay of 10.5° CA and lower heat release rate when compared to diesel at full load condition.

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Peng, Honghua, Xiaobin Xia, Guifeng Zhu, Jun Cai e He Zhou. "Flow Characteristics Simulation of the Gas in the Containment Vessel of Molten Salt Reactor". In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-91651.

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Abstract A containment vessel is usually designed to prevent the potential leakage of radioactive gas in molten salt reactor. Understanding the gas flow characteristics in the containment vessel is beneficial for mastering the radioactive level and the early monitoring and diagnosing when radioactive leakage accident occurs. In this paper, the simplified physical model of the containment vessel in a molten salt reactor was set up, and the gas flow characteristics driven by natural circulation in the containment vessel was studied by CFD code. The results shown that, when the gas enters into the upper chamber from the lower chamber due to buoyancy force, the gas velocity will reach a maximum value of 1.7 m/s where local jet occurs. The mass flow rate of gas between the upper and lower chambers is about 24.0 kg/h and the average circulation time in the containment vessel is about 7.3 hours. It is interesting to note that, the gas tends to flow upward in those annulus gaps with larger hydraulic diameter or near to the central region, indicating that when leakage is near to those regions, it will be easier and faster to flow into the upper chamber. The results provide the reference and guidance for radioactive gas monitoring.

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Rapporti di organizzazioni sul tema "Central Physical characteristics"

Henderson, Tim, Vincent Santucci, Tim Connors e Justin Tweet. National Park Service geologic type section inventory: Central Alaska Inventory & Monitoring Network. National Park Service, maggio 2022. http://dx.doi.org/10.36967/nrr-2293381.

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A fundamental responsibility of the National Park Service (NPS) is to ensure that park resources are preserved, protected, and managed in consideration of the resources themselves and for the benefit and enjoyment by the public. Through the inventory, monitoring, and study of park resources, we gain a greater understanding of the scope, significance, distribution, and management issues associated with these resources and their use. This baseline of natural resource information is available to inform park managers, scientists, stakeholders, and the public about the conditions of these resources and the factors or activities which may threaten or influence their stability and preservation. There are several different categories of geologic or stratigraphic units (supergroup, group, formation, member, bed) that form a hierarchical system of classification. The mapping of stratigraphic units involves the evaluation of lithologies (rock types), bedding properties, thickness, geographic distribution, and other factors. Mappable geologic units may be described and named through a rigorously defined process that is standardized and codified by the professional geologic community (North American Commission on Stratigraphic Nomenclature 2021). In most instances when a new geologic unit such as a formation is described and named in the scientific literature, a specific and well-exposed section or exposure area of the unit is designated as the stratotype (see “Definitions” below). The type section is an important reference exposure for a named geologic unit that presents a relatively complete and representative example for this unit. Geologic stratotypes are important both historically and scientifically, and should be available for other researchers to evaluate in the future. The inventory of all geologic stratotypes throughout the 423 units of the NPS is an important effort in documenting these locations in order that NPS staff recognize and protect these areas for future studies. The focus adopted for completing the baseline inventories throughout the NPS is centered on the 32 inventory and monitoring networks (I&M) established during the late 1990s. The I&M networks are clusters of parks within a defined geographic area based on the ecoregions of North America (Fenneman 1946; Bailey 1976; Omernik 1987). These networks share similar physical resources (geology, hydrology, climate), biological resources (flora, fauna), and ecological characteristics. Specialists familiar with the resources and ecological parameters of the network, and associated parks, work with park staff to support network level activities (inventory, monitoring, research, data management). Adopting a network-based approach to inventories worked well when the NPS undertook paleontological resource inventories for the 32 I&M networks. The planning team from the NPS Geologic Resources Division who proposed and designed this inventory selected the Greater Yellowstone Inventory and Monitoring Network (GRYN) as the pilot network for initiating this project (Henderson et al. 2020). Through the research undertaken to identify the geologic stratotypes within the parks of the GRYN methodologies for data mining and reporting on these resources were established. Methodologies and reporting adopted for the GRYN have been used in the development of this report for the Arctic Inventory & Monitoring Network (ARCN). The goal of this project is to consolidate information pertaining to geologic type sections that occur within NPS-administered areas, in order that this information is available throughout the NPS to inform park managers and to promote the preservation and protection of these important geologic landmarks and geologic heritage resources. The review of stratotype occurrences for the ARCN shows there are currently no designated stratotypes for Cape Krusenstern National Monument (CAKR) and Kobuk Valley National Park (KOVA)...

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Hatef, Elham, Renee F. Wilson, Susan M. Hannum, Allen Zhang, Hadi Kharrazi, Jonathan P. Weiner, Stacey A. Davis e Karen A. Robinson. Use of Telehealth During the COVID-19 Era. Agency for Healthcare Research and Quality (AHRQ), gennaio 2023. http://dx.doi.org/10.23970/ahrqepcsrcovidtelehealth.

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Objectives. To assess how to provide telehealth care by identifying characteristics of telehealth delivery, patient populations, settings, benefits and harms, and implementation strategies during the COVID-19 era. Data sources. PubMed®, CINAHL®, PsycINFO®, and the Cochrane Central Register of Controlled Trials were searched from March 2020 to May 2022. Additional studies were identified from reference lists and experts. Review methods. We included studies that reported characteristics of telehealth use; benefits and harms of telehealth; factors impacting the success of telehealth, including satisfaction/dissatisfaction and barriers/facilitators; and implementation outcomes. We conducted a mixed-methods review, synthesizing quantitative and qualitative studies. Two reviewers independently screened search results for eligibility, serially extracted data, and independently assessed risk of bias of included studies. Results. We included 764 studies; 310 studies were included in our syntheses. Patients using telehealth were more likely to be people who are young to middle-aged, female, White, of higher socioeconomic status, and living in urban settings. Visits for mental and behavioral health conditions were more frequent than visits for other conditions, and mental or behavioral care was also more likely to be delivered via telehealth than care for other conditions. Across a variety of conditions, telehealth produced similar clinical outcomes as compared with in-person care. Telehealth care is appropriate for some patients, but more information is necessary to determine the suitability of telehealth for specific patient populations; patients and providers felt that telehealth may be less suitable and less desirable for patients with complex clinical conditions; and some patients perceive telehealth as a barrier to improved health outcomes owing to the absence of a physical exam and challenges in developing rapport and communicating with their care team. There was a lack of evidence addressing implementation cost, penetration, and sustainability of telehealth, and about telehealth implementation at the health system level. Conclusions. Whereas telehealth use spiked after the beginning of the pandemic, the characteristics of patients using telehealth follow a pattern similar to that for other healthcare and digital health services. We found that the use of telehealth may be comparable to in-person care across different clinical and process outcomes. Telehealth implementation has addressed the needs of both patients and providers to some extent, even as clinical conditions, patient and provider characteristics, and type of assessment varied. Telehealth has provided a viable alternative mode of care delivery during the pandemic and holds promise for the future.

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Journeay, M., P. LeSueur, W. Chow e C L Wagner. Physical exposure to natural hazards in Canada. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330012.

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Natural hazard threats occur in areas of the built environment where buildings, people, and related financial assets are exposed to the physical effects of earth system processes that have a potential to cause damage, injuries, losses, and related socioeconomic disruption. As cities, towns, and villages continue to expand and densify in response to the pressures of urban growth and development, so too do the levels of exposure and susceptibility to natural hazard threat. While our understanding of natural hazard processes has increased significantly over the last few decades, the ability to assess both overall levels of physical exposure and the expected impacts and consequences of future disaster events (i.e., risk) is often limited by access to an equally comprehensive understanding of the built environment and detailed descriptions of who and what are situated in harm's way. This study addresses the current gaps in our understanding of physical exposure to natural hazards by presenting results of a national model that documents characteristics of the built environment for all settled areas in Canada. The model (CanEM) includes a characterization of broad land use patterns that describe the form and function of cities, towns, and villages of varying size and complexity, and the corresponding portfolios of people, buildings and related financial assets that make up the internal structure and composition of these communities at the census dissemination area level. Outputs of the CanEM model are used to carry out a preliminary assessment of exposure and susceptibility to significant natural hazard threats in Canada including earthquake ground shaking; inundation of low-lying areas by floods and tsunami; severe winds associated with hurricanes and tornados; wildland urban interface fire (wildfire); and landslides of various types. Results of our assessment provide important new insights on patterns of development and defining characteristics of the built environment for major metropolitan centres, rural and remote communities in different physiographic regions of Canada, and the effects of ongoing urbanization on escalating disaster risk trends at the community level. Profiles of physical exposure and hazard susceptibility described in this report are accompanied by open-source datasets that can be used to inform local and/or regional assessments of disaster risk, community planning and emergency management activities for all areas in Canada. Study outputs contribute to broader policy goals and objectives of the International Sustainable Development Goals (SDG 2015-2030; Un General Assembly, 2015) and the Sendai Framework for Disaster Risk Reduction (SFDRR 2015-2030; United Nations Office for Disaster Reduction [UNDRR], 2015), of which Canada is a contributing member. These include a more complete understanding of natural hazard risk at all levels of government, and the translation of this knowledge into actionable strategies that are effective in reducing intrinsic vulnerabilities of the built environment and in strengthening the capacity of communities to withstand and recover from future disaster events.

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Савосько, Василь Миколайович, Юлія Бєлик e Юрій Васильович Лихолат. Ecological and Geological Determination of the Initial Pedogenesis on Devastated Lands in the Kryvyi Rih Iron Mining & Metallurgical District (Ukraine). Journ. Geol. Geograph. Geoecology, 2019. http://dx.doi.org/10.31812/123456789/3643.

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In our time, a very urgent problem is the cessation of negative impacts on the environment and the return to the practical use of the territories of devastated lands. In this regard, it is important to find out the basic laws of primary soil formation in the area of these man-made neoplasms. The initial soil formation conditions were analyzed on 19 experimental sites which represent the main varieties of devastated land in the Kryvyi Rih Iron Mining and Metallurgical District (Central Ukraine): (i) waste rock dumps of old iron mines (old name “Forges”), (ii) tailing storage facility of underground iron mines, (iii) waste rock dumps of the Iron Ore Mining and Dressing Plant, (iv) waste rock dumps of the Granite Quarry Plant. It was established that on the devastated lands in Kryvyi Rih District, the initial soil formation occurs in very difficult conditions. Therefore, over 25- 100 years only very primitive soils were formed. The following features are inherent to them: (1) primitive soil profile (thickness 10-100 mm), (2) low levels of soil organic substance content (9.5-11.5 %), (3) alkaline indicators of the soil solution (pHH2O – 8.08-8.92, pHKCl – 7.42-8.23), (4) low levels of cation exchange capacity (6.34-8.47 mMol /100 g). By results of correlation calculations, among the factors of soil formation time (duration of soil formation) and input of plant ash elements’ fall are characterized by the maximum number of statistically significant correlation coefficients and their numerical values. In terms of chemical composition of the technosol, the values of organic matter content and exchangeable acidity (pHKCl) were the most predictable soil formation factors. Generally physical / chemical characteristics of geological rocks (as parent material) and time were the two most important factors in determining the initial pedogenesis on devastated lands in the Kryvyi Rih Iron Mining & Metallurgical District (Ukraine).

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Physical, chemical, and biological characteristics of three reservoirs in west-central Missouri, 1991-93. US Geological Survey, 1995. http://dx.doi.org/10.3133/wri954120.

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