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Добірка наукової літератури з теми "EGS"

Автор: Grafiati
Опубліковано: 4 червня 2021
Оновлено: 28 січня 2023

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Статті в журналах з теми "EGS"

1

Huu Trung, Tran, Mai Duc Huynh, Do Van Cong, and Nguyen Vu Giang. "PROPERTIES OF COMPOSITE BASED ON HIGH DENSITY POLYETHYLENE/ETHYLENE VINYL ACETATE BLEND AND A NOVEL ORGANIC MODIFIED WASTE GYPSUM." Vietnam Journal of Science and Technology 56, no. 3B (September 13, 2018): 87. http://dx.doi.org/10.15625/2525-2518/56/3b/12915.

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In this study, waste gypsum (WGS) was used as the filler in blend of high density polyethylene (HDPE) and ethylene vinyl acetate copolymer (EVA) in order to improve the flame resistance of this composite. After modification by ethylene bis stearamide (EBS), modified gypsum (EGS) at various contents was dispersed into HDPE/EVA blend by melt-mixing method to obtain EGS/HDPE/EVA composites. The IR analysis of the EGS showed the interaction between EBS and gypsum. The difference in morphology of HDPE/EVA/EGS and HDPE/EVA/OGS composites was also observed in SEM images. By adding EGS and small amounts of flame retardant additives such as ammonia polyphosphate and zinc borate, the thermal stability and the flame resistance of HDPE/EVA/EGS composites have improved and classified at V2 grade of UL94 standard. Moreover, the second self extinguishing time (t2) of EGS composite is shorter than that of unmodified gypsum (OGS) composite because of the quality char forming after the fist burning and it plays a role as thermal barriers to protect material from heat of the second ignition. About mechanical properties, both tensile strength and elongation at break of the composite decreased with increasing the gypsum content and flame retardant additives because of filler aggregation.
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2

Liu, Zhi Guo. "Effect of Heating Temperature of Expandable Graphite on Amorphous Process of Expanded Graphite/Ni System during Ball Milling." Applied Mechanics and Materials 80-81 (July 2011): 233–36. http://dx.doi.org/10.4028/www.scientific.net/amm.80-81.233.

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Two expanded graphites, EG1 and EG2 that were prepared by rapid heating expandable graphite to 600 and 1000 °C, respectively, were ball milled in a high-energy mill under an air atmosphere with 16.7% nickel addition. The X-ray diffraction patterns of the products show that that increasing the heating temperature of expandable graphite accelerates the amorphous process of the EG-Ni systems during the milling process. Ball milling the EG2-Ni mixture results in the formation of an amorphous EG-Ni system and Ni3C phase. Comparing with the amorphous process of the milled EGs without nickel addition, it is concluded that the presence of nickel restrains the process of EG1 in rate, but it promotes this process of EG2.
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3

Roy, J. David, W. Johnson Hardy, Morgan E. Roberts, Joseph E. Stahl, C. Caleb Butts, Jon D. Simmons, and William H. Barber. "Reducing Health Care Burden of Emergency General Surgery with a 24-Hour Dedicated Emergency General Surgery Service." American Surgeon 88, no. 5 (December 9, 2021): 922–28. http://dx.doi.org/10.1177/00031348211056283.

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Background Emergency general surgery (EGS) diagnoses account for 11% of surgical admissions and 50% of surgical mortality. In this population, 7 specific operations are associated with 80.3% of deaths, 78.9% of complications, and 80.2% of hospital costs. In 2016, our institution established a comprehensive in-house EGS service. Herein, we hypothesize that formation of a dedicated EGS service is associated with a significant reduction in morbidity for patients undergoing the most common EGS procedures. Methods All patients undergoing one of the most common EGS procedures within 2 days of admission were identified from 1/1/2013 to 5/9/2019 via a retrospective chart review. Patients were cohorted as pre- and post-EGS implementation. The primary outcome measure was the overall complication rate. Secondary endpoints included mortality, individual complication rate, time to operation, overnight operation, and length of stay. Finally, both cohorts were benchmarked to national outcomes. Results 718 patients met inclusion criteria (pre-EGS = 409 and post-EGS = 309). Overall complication rate decreased significantly (19.8% vs 13.9%, P = .0387) and overnight operations increased significantly in the post-EGS group (7.8%-16.5%, P = .0003). Pre-EGS complications were higher than national data in all but 1 procedure group, whereas post-EGS complications rates were lower in all but 2 categories. Discussion Implementation of a dedicated EGS service line was associated with a significant decrease in complication rate among the most complication-prone EGS procedures. Number of operations within 24 hours did not increase significantly; however, overnight operations did increase. Our results indicate that establishing a service-specific EGS line is reasonable and beneficial.
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4

de Melo, Jaime, and Jean-Marc Solleder. "The EGA Negotiations: Why They Are Important, Why They Are Stalled, and Challenges Ahead." Journal of World Trade 54, Issue 3 (June 1, 2020): 333–47. http://dx.doi.org/10.54648/trad2020015.

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Анотація:
Decade-long negotiations on the reduction of tariffs on Environmental Goods (EGs) at the Doha Round using a list approach to define EGs, failed to produce an agreement. In July 2014, fourteen countries entered plurilateral negotiations under the ambit of the WTO. If successful, the resulting Environmental Goods Agreement (EGA) would have eliminated tariffs on a list of EGs. These negotiations broke down in December 2016. This article documents this episode and the mercantilistic behaviour of negotiators that prevented agreement on an extended list of EGs, a prerequisite for a meaningful outcome for the environment. A conclusion of the EGA negotiations under the current narrow agenda focusing only on tariffs could help build trust to go further but would be insufficient to help mitigate climate change, even if a critical mass were to be reached allowing extension of the tariff reductions to all WTO members. This is because average tariffs for the negotiating group are too low (1.5%). Extending the agenda to include Non-Tariff Barriers (NTBs) and Environmental Services (ESs) remains the acid test for an EGA to address meaningfully the climate change challenge. Reaching agreement on how to tackle NTBs and ESs will require delegating negotiating authority to independent scientific experts and probably modifying WTO rules. Aligning the trade and climate regimes will call for transformational changes in the WTO contract to take into account transnational externalities and public goods. This would amount to a shift from the present negative contract where countries are free to choose their policies so long as they do not discriminate between domestic and imported goods to a positive contract where WTO members have to pursue similar climate-friendly policies. Environmental goods, Environmental services, EGA, WTO, trade and environment,
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5

Ogiwara, Hideki, and Nobuhito Morota. "Bifrontal encephalogaleosynangiosis for children with moyamoya disease." Journal of Neurosurgery: Pediatrics 10, no. 3 (September 2012): 246–51. http://dx.doi.org/10.3171/2012.6.peds11483.

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Object Several operative techniques have been reported to increase the cerebral blood flow (CBF) of the anterior cerebral artery (ACA) territory in patients with moyamoya disease. However, the optimal procedure has not yet been determined. This study compared the efficacy of performing bifrontal encephalogaleosynangiosis (EGS) using a craniotomy with performing EGS using bur holes. Methods The authors retrospectively analyzed surgical results of pediatric patients with moyamoya disease treated using encephaloduroarteriosynangiosis (EDAS) and bifrontal EGS with a craniotomy, or EGS with bur holes, for the purpose of improving the ischemia of the ACA territory. Patients' demographic data, clinical presentations, surgical therapies, and clinical outcomes were reviewed. Results Nine patients underwent EDAS with bifrontal EGS using a craniotomy. Three patients underwent EDAS with EGS using bur holes for 5 cerebral hemispheres (1 bur hole in 2 hemispheres, 2 bur holes in 2 hemispheres, and 3 bur holes in 1 hemisphere). The mean follow-up period was 46.8 months (range 7–96 months). Preoperative symptoms improved in all patients in each group. The collateral circulation in the ACA territory made by EGS was divided into 3 groups according to postoperative angiography results: Group A (revascularization of more than two-thirds of the ACA territory), Group B (revascularization between one-third and two-thirds), and Group C (revascularization less than one-third). Of 5 hemispheres treated with EGS using bur holes, 1 was evaluated as Group B and 4 as Group C. Of 18 hemispheres treated with bifrontal EGS using a craniotomy, 8 were evaluated as Group A, 7 as Group B, and 3 as Group C. The patients who underwent bifrontal EGS using a craniotomy showed significantly better revascularization than those who underwent EGS using bur holes (p = 0.0065). Cerebral blood flow in the ACA territory improved in 13 (92.9%) of 14 hemispheres in patients treated with bifrontal EGS. In contrast, only 3 (60%) of 5 hemispheres demonstrated an increase of CBF in patients treated with EGS using bur holes. A trend was demonstrated for better improvement with bifrontal EGS (p = 0.08). Conclusions Encephaloduroarteriosynangiosis with bifrontal EGS using a craniotomy demonstrated better revascularization and improvement of CBF in the ACA territory than with EGS using bur holes. Bifrontal EGS using a craniotomy is considered to be a simple, safe, and effective surgical procedure for improvement of the ischemia of the ACA territory in pediatric patients with moyamoya disease.
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6

Liu, Xin. "An Overview of EGS Development and Management Suggestions." Frontiers Research of Architecture and Engineering 3, no. 3 (December 14, 2020): 6. http://dx.doi.org/10.30564/frae.v3i3.2452.

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Анотація:
The world is facing the energy challenge to over-reliance to fossil-fuels, the development of renewable energy is inevitable. From a clean and economic view, enhanced geothermal system (EGS) provides an effective mean to utilize geothermal energy to generate. Different form the conventionalhydro geothermal, the host rock of EGS is Hot Dry Rock (HDR), which buries deeper with high temperature (more than 180°C). The generationof EGS is promising. The development of EGS can be combined with the tech Power to geothermal energy. Exceed power is supposed to drive fluid working in HDR layer to obtain geothermal energy for generation. The whole article can be divided into three parts. In the first art, evaluation indexes of EGS as well as pilot EGs Projects (e.g. Fenton Hill and Basel) and exiting EGS project (e.g. Paralana and Newberry) are summarized, which points a general impression on EGS site. The dominate indexes are heat flow, geothermal gradient and thermal storage. The second part is focused on the simulation methods and working fluids selection of EGS. A detailed comparison of the main simulation software (e.g. TOUGH2 and FEHM) is carried out. With the respect of working fluid selection, the comparison between water and CO2 is researched and CO2 is a preferred option for EGS development for less fluid loss and less dissolution to HDR. The art of CO2-EGS is introduced clearly in this part. The third part is about the addition consideration of EGS plant operation, it excludes auxiliary plant support and HSE management.
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7

Pan, Feng, Brian J. McPherson, and John Kaszuba. "Evaluation of CO2-Fluid-Rock Interaction in Enhanced Geothermal Systems: Field-Scale Geochemical Simulations." Geofluids 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/5675370.

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Recent studies suggest that using supercritical CO2 (scCO2) instead of water as a heat transmission fluid in Enhanced Geothermal Systems (EGS) may improve energy extraction. While CO2-fluid-rock interactions at “typical” temperatures and pressures of subsurface reservoirs are fairly well known, such understanding for the elevated conditions of EGS is relatively unresolved. Geochemical impacts of CO2 as a working fluid (“CO2-EGS”) compared to those for water as a working fluid (H2O-EGS) are needed. The primary objectives of this study are (1) constraining geochemical processes associated with CO2-fluid-rock interactions under the high pressures and temperatures of a typical CO2-EGS site and (2) comparing geochemical impacts of CO2-EGS to geochemical impacts of H2O-EGS. The St. John’s Dome CO2-EGS research site in Arizona was adopted as a case study. A 3D model of the site was developed. Net heat extraction and mass flow production rates for CO2-EGS were larger compared to H2O-EGS, suggesting that using scCO2 as a working fluid may enhance EGS heat extraction. More aqueous CO2 accumulates within upper- and lower-lying layers than in the injection/production layers, reducing pH values and leading to increased dissolution and precipitation of minerals in those upper and lower layers. Dissolution of oligoclase for water as a working fluid shows smaller magnitude in rates and different distributions in profile than those for scCO2 as a working fluid. It indicates that geochemical processes of scCO2-rock interaction have significant effects on mineral dissolution and precipitation in magnitudes and distributions.
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8

Egan, RJ, T. Abdelrahman, S. Tate, J. Ansell, R. Harries, L. Davies, GWB Clark, and WG Lewis. "Modular emergency general surgery training: A pilot study of a novel programme." Annals of The Royal College of Surgeons of England 98, no. 7 (September 2016): 475–78. http://dx.doi.org/10.1308/rcsann.2016.0187.

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Introduction Pan-speciality consensus guidance advocates mandatory emergency general surgery (EGS) training modules for specialist registrars (StRs). This pilot study evaluated the impact of EGS modules aimed at StRs over 1 year. Methods Eleven StRs were allocated a focused 4-week EGS module, in addition to the standard 1:12 on-call duty rota, in a tertiary surgical centre. Primary outcome measures included the number of indicative emergency operations and validated Procedure Based Assessments (PBAs) performed, both during the EGS module and over the training year. Results StRs performed a median of 11 (range 5–15) laparotomies during the EGS module versus 31 (range 9-49) over the whole training year. StRs attended 43.7% of available laparotomies during the module (range 24.1–63.7%). EGS modules provided more than one-third of the total emergency laparotomy experience, and a quarter of the emergency colectomy, appendicectomy and Hartmann’s procedure experience. There were no differences in EGS module-related outcomes between junior and senior StRs. Significantly more PBAs related to laparotomy and segmental colectomy were completed during EGS modules than the on-call duty rota, at 32% versus 14% (p<0.001) and 48% versus 22% (p=0.019), respectively. Performance levels were maintained following module completion. Conclusions These findings provide an important baseline when considering future modular EGS training.
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9

Aslam, Muhammad, Sumbal Mukhtar, Muhammad Ubaid Ullah Sheikh, Syed Aqeel Akbar Shah Gillani, Fakhra Wahab, and Sidra Masood. "Calculating the Increased Morbidity and Mortality Related with Emergency General Surgery while Adjusting for Patient-Specific Characteristics." Pakistan Journal of Medical and Health Sciences 16, no. 4 (April 26, 2022): 843–45. http://dx.doi.org/10.53350/pjmhs22164843.

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Aim: When compared with untreated, emergency general surgery entails inconsistent share of responsibility from medical mistakes, infections, in addition mortality. Early work has been restricted by patient and procedure variability; however, it appears that EGS individuals have an even worse prognosis due to preoperative danger the current aspects. The objectives of this paper were to assess additional overall mortality highly regulated environment with EGS while adjusting for case-explicit variables. Researchers predicted that EGS remains a significant predictor for disease and mortality on its own. Methods: Researchers studied information from American College of Surgeons-National Operational Performance Development Program in the past. From 2020 to 2021, fifteen processes shared by both EGS and NEGS can be included. Individuals have been divided into groups depending on the level of emergency. Clinical symptoms represented secondary endpoints. Variables were compared using the W2 and Wilcoxon signed-rank tests. To discover individual risk variables for death and morbidity, multivariate logistic model was applied. Results: There were 26,076 EGS and 43,650 NEGS among the 67,680 individuals. EGS individuals die at a rate of 13.52 percent, whereas NEGS deaths occurred at a rate of 3.67 percent (p G 0.0002). In 34.81 percent of EGS cases and 13.75 percent of NEGS participants, significant problems happened (p G 0.0002). EGS remained autonomously linked through mortality (odds ratio, 1.39; p = 0.028) in addition significant complications (odds ratio, 1.34; p = 0.002) when postoperative factors and surgery type were adjusted for. Conclusion: EGS is a cause of morbidity and mortality and complication rates on its own. EGS's increased incidence and mortality are not caused entirely by preoperative health conditions, making EGS a viable target for improvement initiatives. Keywords: Emergency general surgery (EGS), medical mistakes, infections, and mortality.
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10

Hilpert, Markus, Bruce D. Marsh, and Peter Geiser. "The radiator-enhanced geothermal system: Benefits of emulating a natural hydrothermal system." Interpretation 4, no. 4 (November 1, 2016): SR35—SR48. http://dx.doi.org/10.1190/int-2016-0032.1.

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Анотація:
We have developed a novel enhanced geothermal system (EGS) called radiator EGS (RAD-EGS). This system attempts to emulate naturally occurring hydrothermal systems by creating a vertically oriented heat exchanger or vane in the deep subsurface, mimicking a radiator in an internal combustion engine. Water is injected at the bottom of the vane and produced on the top. We propose to build the RAD-EGS in hot sedimentary aquifers (HSAs) with high-permeability vane(s) created in the plane defined by [Formula: see text] and [Formula: see text] (vertical). We have evaluated 3D heat-transfer simulations to better understand the fluid and heat flows that may occur in RAD-EGSs. The simulations account for subsurface heterogeneity including the presence of underlying basement rock, an overlying confining layer, and an ambient hydraulic gradient, which causes background groundwater flow. Our simulations indicate that our induced upward flow in the vane significantly prolongs the lifetime of RAD-EGS when compared with downward flow because hydraulic short circuiting is avoided. Within the vane, convection may occur, and its onset is analyzed in terms of a characteristic Rayleigh number. A critical aspect of RAD-EGS, therefore, is that thermal recharge does not rely solely on heat conduction from the surrounding wall rock, which is typical for EGS built in hot dry rock (HDR). Instead, recharge is also due to heat advection through the surrounding water-saturated aquifer, substantially prolonging the lifetime of the thermal reservoir. Moreover, fluid losses as typical for EGS built in HDR do not occur. It is also possible that cold water injected at the bottom of the vane may sink into deeper rock layers, which displaces hot water from the surrounding aquifer into the RAD-EGS. We suggest that mimicking a natural hydrothermal system is a successful EGS strategy via RAD-EGS.
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Більше джерел

Дисертації з теми "EGS"

1

SILVA, Rodrigo Erasmo da Conceição. "Interfaces gráficas de entrada e saída da eGs (electrical GEOPHYSICS suite)." Universidade Federal do Pará, 2005. http://repositorio.ufpa.br/jspui/handle/2011/5814.

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CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
Apresentamos uma interface gráfica para o programa eGs (electrical GEOPHYSICS suíte) usado na modelagem e interpretação de dados elétricos e eletromagnéticos na exploração geofísica. Esta dissertação corresponde a parcela do programa que trata das interfaces de entrada de dados de modelos geoelétricos bi e tridimensionais e das interfaces de apresentação dos resultados da modelagem como também dos dados observados. O programa contém interfaces para criação, modificação e visualização de modelos geoelétricos bi e tridimensionais, e para apresentação da resposta do modelo através de gráficos e imagens. Este trabalho resultou num programa com diversas opções para alterar a geometria e as propriedades físicas do modelo geoelétricos e recursos de visualização para facilitar a interpretação de dados geofísicos. A interface gráfica pode ser usada para criar modelos geoelétricos dos métodos elétrico ou eletromagnético mais usados e analisar as respostas dos modelos e de dados observados em campanha de campo. O programa é suficientemente flexível de modo que novas interfaces gráficas de outros métodos elétricos e eletromagnéticos podem ser facilmente implementadas.
We present a graphic interface for the program eGs (electrical GEOPHYSICS suite) used for modeling and interpretation of electric and electromagnetic data in geophysical exploration. This master degree dissertation corresponds the portion of the program that treats the interfaces for bi and three-dimensional input data of geoelectrical models together with interfaces for the presentation of the modeling results and for the presentation of observed data as well. The program contains interfaces for creation, modification and visualization of bi and threedimensional geoelectrical models and for illustrations of the calculated results through graphs and images. This work gives a program with several options to alter the geometry and the physical properties of the geoelectrical models, including facilities for three dimensions visualization in order to help geophysical data interpretation. The graphic interfaces can be used to create geoelectrical models associated with the most used electric and electromagnetic geophysical methods and to analyze the answers obtained by numerical modeling associated with different types of observed data in field campaign. The program is sufficiently flexible so that new graphic interfaces of other electric and electromagnetic methods can be implemented easily.
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2

Linneman, Dorothy. "The EGS Collab Hydrofracture Experiment: Seismic Velocity and Elastic Moduli Characterization." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/scripps_theses/1240.

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Анотація:
An Enhanced Geothermal System (EGS) allows for the generation of electricity using the Earth's heat by improving ('enhancing') the fracture permeability of rock and flowing fluid through the optimized medium. The complex behavior of EGS fracture systems and heat flow processes are being studied at various scales to determine the practical capabilities of EGS technology. The EGS collaborative (Collab) project is focused on experimentation of intermediate-scale (i.e., 10's of meters) EGS reservoir generation processes and model validation at crystalline rock sites. A key phase of the project involves seismic characterization of a rock mass intended to be representative of EGS reservoir rock. A suite of boreholes was drilled from inside a mine drift on the 4850-foot (~1.5 km) level of the Sanford Underground Research Facility (SURF) in Lead, South Dakota. The boreholes, comprised of one stimulation (injection) well, one production (extraction) well, and six monitoring wells, were each nominally drilled approximately 200 feet (~60 meters) deep into the surrounding crystalline rock formation near the location of a previous experiment at this site (kISMET). Active source seismic data were collected using an electrical sparker source and an electro-mechanical impulse source to generate compressional (P-) wave and shear (S-) wave energy, respectively, at varying depths in the stimulation well. Seismic receivers were deployed in the sub-parallel production well, in addition to receivers installed in the monitoring wells, to detect P- and S-wave arrivals. Over the summer, I picked all the P-wave arrivals and helped generate initial tomographic models. The 3D P- and S-wave velocity models associated with these are presented here with a discussion of the elastic parameters they imply. The rock is found to be more complicated and heterogeneous than expected. Velocity and calculated elastic moduli values are reasonable for crystalline rock. These elastic parameters are used for modeling and monitoring seismic hypocenters that are associated with fracture propagation during EGS stimulation activities.
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3

Wells, Olivia L. "The Evolution of Fracture Surface Roughness and its Dependence on Slip." Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/348496.

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Анотація:
Geology
M.S.
Under effective compression, impingement of opposing rough surfaces of a fracture can force the walls of the fracture apart during slip. Therefore, a fracture’s surface roughness exerts a primary control on the amount of dilation that can be sustained on a fracture since the opposing surfaces need to remain in contact. Previous work has attempted to characterize fracture surface roughness through topographic profiles and power spectral density analysis, but these metrics describing the geometry of a fracture’s surface are often non-unique when used independently. However, when combined these metrics are affective at characterizing fracture surface roughness, as well as the mechanisms affecting changes in roughness with increasing slip, and therefore changes in dilation. These mechanisms include the influence of primary grains and pores on initial fracture roughness, the effect of linkage on locally increasing roughness, and asperity destruction that limits the heights of asperities and forms gouge. This analysis reveals four essential stages of dilation during the lifecycle of a natural fracture, whereas previous slip-dilation models do not adequately address the evolution of fracture surface roughness: (1) initial slip companied by small dilation is mediated by roughness controlled by the primary grain and pore dimensions; (2) rapid dilation during and immediately following fracture growth by linkage of formerly isolated fractures; (3) wear of the fracture surface and gouge formation that minimizes dilation; and (4) between slip events cementation that modifies the mineral constituents in the fracture. By identifying these fundamental mechanisms that influence fracture surface roughness, this new conceptual model relating dilation to slip has specific applications to Enhanced Geothermal Systems (EGS), which attempt to produce long-lived dilation in natural fractures by inducing slip.
Temple University--Theses
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4

Remmen, Krystle D. "A REACTIVE TRACER METHOD FOR THE MEASUREMENT OF SPECIFIC SURFACE AREA IN EGS RESERVOIRS." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527408.

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Анотація:

Early thermal breakthrough is an issue of concern in the geothermal industry, especially with regard to engineered geothermal systems (EGS). Determination of the specific surface area (SSA) of the fluid/rock interface in an EGS is vital to predicting early thermal breakthrough. An approach to this problem involving the application of tracers with different sorption properties (lithium, bromide, and deuterium) is presented. Upon injection into a reservoir, these tracers react along the fluid/rock interface to varying degrees. The resulting breakthrough separation at the extraction well can be used to derive SSA by applying a modified form of the advection-dispersion equation. For proof of concept, field tests were conducted in a sandstone bedding-plane fracture near Chazy, New York. Results showed minimal breakthrough separation, indicating insufficient sweep of the fracture area, and that lithium was not an ideal tracer in this medium. However, a relative measure of SSA can still be derived.

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5

Roth, Justin Michael. "Investigating the Volume and Structure of Porosity in Fractured and Unfractured Rock from the Newberry Volcano, Oregon: An Evaluation and Comparison of Two- and Three- Dimensional Methods." Master's thesis, Temple University Libraries, 2014. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/247083.

Повний текст джерела
Анотація:
Geology
M.S.
Porosity is a fundamental characteristic of rock critical to its mechanical and hydrologic behavior, yet a study of the open and accumulated healed porosity of nine core samples from Newberry Volcano shows that different measurement methods produce significantly different estimates of pore volume and structure. This study compares traditional 2D point count, petrographic image analysis, and 3D x-ray Micro Computed Tomography (micro CT) measurement of porosity primarily derived from fracture slip and dilation. The set of measurements quantifies the discrepancy among measurement methods and provides a basis for assessing how this uncertainty depends on geologic factors including the stage of fracture development, and the size and connectivity of the pores. This comparison reveals that detailed petrographic mapping provides the most accurate characterization of fracture porosity, and its history of development, owing to its high spatial resolution and accuracy of phase identification as well as insights afforded from mineralogic and textural relationships. However, this analysis lacks the three-dimensional characterization necessary to determine pore shape and interconnectedness, especially in highly anisotropic and heterogeneous fracture porosity. Micro CT does characterize the three dimensionality of pores, and thus although it consistently underestimates porosity due to non-uniqueness of phase densities and limitations in resolution, and is difficult to post process, this method can usefully augment the petrographic analysis. High resolution mapping of petrographic thin sections also provides a means to characterize the roughness of fracture surfaces across multiple cycles of slip, related dilation, and healing. Analysis of 19 slip events on a small, early stage fracture experiencing less than mm-scale slip, indicates that this roughness is preserved across multiple slip events and is consistently associated with dilation recorded by the accumulation of layers of precipitated cement. Initially, characteristic length scales intrinsic to rock such as the primary grain and pore size distribution of the > 0.2 mm size fraction significantly influence the roughness of fractures, until the dominant mechanism of fracture growth becomes linkage among macroscopic fractures. This correlation among primary rock characteristics such as grain size, fracture roughness, repeated fracture slip, and dilation provides a potential method to assess the key attributes promoting dilatant, self-propping fracture slip necessary for successful stimulation to generate an Enhanced Geothermal System. Comparison to more developed fractures characterized by the development of fault rock suggest such stimulation is most successful for fractures sustaining small slip of a few millimeters or less during single slip events.
Temple University--Theses
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Florêncio, Catarina Alexandra Fazenda. "A intervenção do enfermeiro no atendimento a adolescentes no âmbito da consulta de Exame Global de Saúde (EGS)." Master's thesis, [s.n.], 2014. http://hdl.handle.net/10400.26/16310.

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Mestrado, Enfermagem de Saúde Infantil e Pediatria, 2014, Escola Superior de Enfermagem de Lisboa
O presente relatório insere-se no Curso de Mestrado e Pós Licenciatura na área de Especialização de Enfermagem de Saúde Infantil e Pediatria, reflete um percurso realizado em diferentes contextos de aprendizagem, tendo por base as necessidades identificadas, as atividades implementadas e a aquisição de competências profissionais enquanto futura Enfermeira Especialista em Enfermagem de Saúde Infantil e Pediatria (EESIP). Sendo a adolescência considerada um período da vida marcante no desenvolvimento e integração de condutas e comportamentos que poderão influenciar a saúde dos indivíduos no futuro, o EESIP tem um papel preponderante na implementação de cuidados de qualidade, quer pelo conhecimento aprofundado que detém na área de especialização, quer pelas competências específicas adquiridas que lhe permitem estar desperto para a abrangência dos cuidados aos adolescentes. A temática transversal a todo este percurso foi “A intervenção do enfermeiro no atendimento a adolescentes no âmbito da Consulta de Exame Global de Saúde (EGS)”. O EGS preconizado pela Direção Geral da Saúde (DGS) é uma oportunidade para o enfermeiro responder de modo integrado às necessidades de saúde dos adolescentes , promovendo comportamentos saudáveis e prevenindo a doença. Na interação enfermeiro-adolescente, são identificadas estratégias de cuidados, as necessidades de suporte nos processos de transição vivenciados e a implementação de intervenções que promovam uma transição saudável. Durante todo este percurso sustentei a minha prática no modelo teórico de Afaf Meleis, pelo fundamento e articulação dos seus conceitos, que considerei serem adequados às características deste grupo. Como objetivos gerais pretendi desenvolver competências na mobilização dos processos e modelos de intervenção de enfermagem adequados à prestação de cuidados específicos a crianças, jovens e famílias e desenvolver metodologias de atendimento ao adolescente que, promovendo os conhecimentos da equipa de enfermagem, contribuam para a melhoria da qualidade dos cuidados, no meu local de trabalho. Nos diferentes locais de estágio, desenvolveram-se atividades e instrumentos perante as necessidades identificadas e os objetivos delineados, para o desenvolvimento de competências especializadas na área de Enfermagem de Saúde Infantil e Pediatria.
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Henrion, Eric. "Suivi géodésique des réservoirs souterrains." Thesis, Strasbourg, 2019. https://publication-theses.unistra.fr/public/theses_doctorat/2019/Henrion_Eric_2019_ED413.pdf.

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Cette étude porte sur des réservoirs souterrains, utilisés pour du stockage de gaz en cavités salines, et de la géothermie pour la production d’énergie. L’objectif est de développer une méthodologie avec la géodésie spatiale (InSAR et GNSS) pour extraire un maximum d’informations des déformations en surface issues des processus souterrains (variation de pression et de volume). Les zones végétalisées surplombant les réservoirs étudiés subissent une importante décorrélation temporelle, défavorable à une application efficace de l’InSAR. Les résultats montrent qu’il est possible d’extraire des déplacements pluri-millimétriques par la combinaison de ces deux techniques. Ce travail montre également que l’InSAR peut être utilisé comme outil d’alerte via un traitement rapide, compromis entre rapidité et précision. La disponibilité des données Sentinel-1 (gratuites) offre des perspectives de suivi inégalées en matière de résolution spatiale et temporelle, logistique, et économique
This study focuses on underground reservoirs, used for gas storage in salt caverns, and geothermal energy production. The objective is to develop a methodology using spatial geodesy (InSAR and GNSS) to extract a maximum of information from the surface deformation resulting from underground processes (pressure and volume variations). The vegetated areas overhanging the studied reservoirs are subject to significant temporal decorrelation, which is unfavourable for an efficient application of InSAR. The results show that it is possible to extract multi-millimeter displacements by combining these two techniques. This work also shows that InSAR can be used as a warning tool via fast processing, a compromise between speed and accuracy. The availability of Sentinel-1 data (free) offers unrivalled monitoring prospects in terms of spatial and temporal resolution, logistics and economics
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Giraldo-Arana, David. "Comparação de critérios para predição da precocidade em novilhas Nelore /." Araçatuba, 2019. http://hdl.handle.net/11449/183143.

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Orientador: Guilherme de Paula Nogueira
Resumo: Comumente o biotipo é o principal critério utilizado para predicão da puberdade precoce em novilhas Nelore. Este experimento comparou os possíveis efeitos do peso a desmama (PeD), peso ao sobreano (PeS), espessura de gordura subcutânea na garupa (EGSG), concentrações séricas de IGF-I (IGF-I) e insulina ao sobreano (Ins), ganho diário de peso: até a desmama (GD), entre a desmama ao sobreano (GS) e do nascimento até o sobreano (GT), além de escores visuais de conformação (C), precocidade (P) e musculatura (M) avaliados tanto na desmama como no sobreano, sobre a idade à primeira prenhez e desempenho na primeira estação de monta (EM) de novilhas Nelore. Para isso foram utilizados dados de 241 novilhas, produzidos pela P@RM agropecuária, estas nascidas entre maio e setembro de 2016. As mesmas permaneceram à pasto num único lote a partir da desmama. Avaliações de CPM e mensuração do peso corporal em jejum alimentar e hídrico após12h foram realizadas na desmama e repetidas após ganho mínimo de 50kg de peso. Foi iniciada a EM no dia seguinte à avaliação de sobreano, quando as novilhas foram submetidas ao protocolo de indução de puberdade e duas inseminações artificiais em tempo fixo, e posterior repasse com touro. Para a idade em dias à primeira prenhes houve efeito individual de C na desmama, PeD, GD, P e M no sobreano, GS, GT e IGF-I (p<0,05), no entanto, P e M na desmama não se mostraram importantes (p>0,05). Todas as avaliações de CPM mostraram correlações positivas com o GD, GS ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Lately frame has being used to predict the occurrence of precocious puberty in Nellore heifers. This experiment compared the possible effects of weaning weight (PeD), yearling weight (PeS), rump backfat thickness (EGSG), serum concentrations of IGF-I (IGF-I) and insulin to yearling (INS), daily weight gain until weaning (GD), between weaning to yearling (GS) and from birth to yearling (GT), further the visual scores of conformation (C), precocity (P) and musculature (M) on weaning and yearling, on age at first pregnancy and the performance in the first breeding season (EM) of Nellore heifers. For that, data from 241 animals, produced by P@RM farming, born between May to September 2016 was used. After weaning all heifers were kept on pasture in a single lot and CPM score and body weight gain, under restriction of food and water for 12 h, were evaluated at weaning and repeated after a minimum weight gain of 50 kg. Breeding season started a day after evaluation of yearling, where heifers were subjected to a puberty induction protocol and two fixed time artificial inseminations, followed by a clean-up bull. There was an individual effect of C at weaning, PeD, GD, P and M on the yearling, GS, GT and IGF-I on age at days at first pregnancy (p<0.05), however, the date of birth, P and M at weaning had no significant effect (p>0.05). All CPM evaluations showed positive correlations with GD, GS and GT both at weaning (r= 0.61, 0.38, 0.43, p<0.05) and yearling (0.46, 0.50, 0, 41, p<0.05... (Complete abstract click electronic access below)
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Grazian, A., E. Giallongo, D. Paris, K. Boutsia, M. Dickinson, P. Santini, R. A. Windhorst, et al. "Lyman continuum escape fraction of faint galaxies at z ~ 3.3 in the CANDELS/GOODS-North, EGS, and COSMOS fields with LBC." EDP SCIENCES S A, 2017. http://hdl.handle.net/10150/625832.

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Context. The reionization of the Universe is one of the most important topics of present-day astrophysical research. The most plausible candidates for the reionization process are star-forming galaxies, which according to the predictions of the majority of the theoretical and semi-analytical models should dominate the H I ionizing background at z greater than or similar to 3. Aims. We measure the Lyman continuum escape fraction, which is one of the key parameters used to compute the contribution of star-forming galaxies to the UV background. It provides the ratio between the photons produced at lambda <= 912 angstrom rest-frame and those that are able to reach the inter-galactic medium, i.e. that are not absorbed by the neutral hydrogen or by the dust of the galaxy's inter-stellar medium. Methods. We used ultra-deep U-band imaging (U = 30.2 mag at 1 sigma) from Large Binocular Camera at the Large Binocular Telescope (LBC/LBT) in the CANDELS/GOODS-North field and deep imaging in the COSMOS and EGS fields in order to estimate the Lyman continuum escape fraction of 69 star-forming galaxies with secure spectroscopic redshifts at 3.27 <= z <= 3.40 to faint magnitude limits (L = 0.2L*, or equivalently M-1500 similar to -19). The narrow redshift range implies that the LBC U-band filter exclusively samples the lambda <= 912 angstrom rest-frame wavelengths. Results. We measured through stacks a stringent upper limit (<1.7% at 1 sigma) for the relative escape fraction of H I ionizing photons from bright galaxies (L > L*), while for the faint population (L = 0.2L*) the limit to the escape fraction is less than or similar to 10%. We computed the contribution of star-forming galaxies to the observed UV background at z similar to 3 and find that it is not sufficient to keep the Universe ionized at these redshifts unless their escape fraction increases significantly (>= 10%) at low luminosities (M-1500 >= -19). Conclusions. We compare our results on the Lyman continuum escape fraction of high-z galaxies with recent estimates in the literature, and discuss future prospects to shed light on the end of the Dark Ages. In the future, strong gravitational lensing will be fundamental in order to measure the Lyman continuum escape fraction down to faint magnitudes (M-1500 similar to -16) that are inaccessible with the present instrumentation on blank fields. These results will be important in order to quantify the role of faint galaxies to the reionization budget.
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Clarkson, Christopher A. "On the observational characteristics of inhomogeneous cosmologies : undermining the cosmological principle or have cosmologists put all their EGS in one basket?" Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301781.

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Книги з теми "EGS"

1

Seth, Torsten. EGs arbetsrätt. [Lund]: Studentlitteratur, 1992.

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Midden, Karen Stoelzle. EGS: Environmental gaming/simulation. Carbondale, IL: [Lands View Consulting, 1991.

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Community, European Economic. EGs bolagsrätt i svensk översättning. Stockholm: Allmänna förlaget, 1992.

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nomenklaturcentralen, Tekniska, ed. EGs ord och uttryck: Engelsk-svensk ordlista över EGs regelspråk = EC words and expressions. [Höganäs]: Wiken, 1993.

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Dolu, Șükrü. Sektörel, bölgesel ve ulusal kalkınmada Türk modeli EGS. İstanbul: Elit Kitaplar, 1998.

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Ohlsson, Lennart. Industrin inför EGs 90-tal: En strategisk effektanalys. Stockholm: Industriförbundets förlag, 1989.

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Wahl, Nils. Konkurrensförhållanden: Om förhållandet mellan EGs konkurrensrätt och nationell konkurrensrätt. Stockholm: Juristförlaget, 1994.

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Dhunér, Karl-Johan. Förfarandet i konkurrensrätten: EGs och svensk konkurrenslagstiftning i praktisk tillämpning. Uppsala: Iustus förlag, 1995.

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Johansson, Mats. EG och den regionala försörjningen: Civilområde Nedre Norrlands konkurrenskraft på EGs inre marknad. [Stockholm]: Arbetsmarknadsdepartementet, 1992.

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International Workshop on EGS (3rd 2004 KEK). Proceedings of the Third International Workshop on EGS: August 2-6, 2004, KEK, Tsukuba, Japan. Tsukuba-shi, Ibaraki-ken, Japan: High Energy Accelerator Research Organization, 2005.

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Частини книг з теми "EGS"

1

Rogers, David W. O., and Alex F. Bielajew. "Experimental Benchmarks of EGS." In Monte Carlo Transport of Electrons and Photons, 307–21. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1059-4_13.

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Saadat, Ali, Stephanie Frick, Stefan Kranz, and Simona Regenspurg. "Energetic Use of EGS Reservoirs." In Geothermal Energy Systems, 303–72. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527630479.ch6.

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Pankaj, Ashok. "EGS for Growth with Justice." In India Studies in Business and Economics, 29–48. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-7443-6_2.

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Rogers, David W. O., and Alex F. Bielajew. "A Comparison of EGS and ETRAN." In Monte Carlo Transport of Electrons and Photons, 323–42. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1059-4_14.

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Del Guerra, A., and Walter R. Nelson. "Positron Emission Tomography Applications of EGS." In Monte Carlo Transport of Electrons and Photons, 469–84. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1059-4_22.

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Del Guerra, A., and Walter R. Nelson. "High-Energy Physics Applications of EGS." In Monte Carlo Transport of Electrons and Photons, 599–622. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1059-4_28.

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Baria, Roy, L. Mortimer, and G. Beardsmore. "Engineered Geothermal Systems engineered geothermal system (EGS) , Development engineered geothermal system (EGS) definition and Sustainability Engineered Geothermal Systems Sustainability of." In Encyclopedia of Sustainability Science and Technology, 3501–14. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_235.

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Baria, Roy, L. Mortimer, and G. Beardsmore. "Engineered Geothermal Systems engineered geothermal system (EGS) , Development engineered geothermal system (EGS) definition and Sustainability Engineered Geothermal Systems Sustainability of." In Renewable Energy Systems, 714–27. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5820-3_235.

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Kajale, Jayanti, and Sangeeta Shroff. "From EGS to MGNREGS in Maharashtra: Were the Programme Potentials Achieved?" In India Studies in Business and Economics, 155–73. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6262-9_6.

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Loret, Benjamin. "Enhanced Geothermal Systems (EGS): Hydraulic Fracturing in a Thermo-Poroelastic Framework." In Fluid Injection in Deformable Geological Formations, 465–551. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94217-9_7.

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Тези доповідей конференцій з теми "EGS"

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Leary, Peter, Peter Malin, and Eylon Shalev. "EGS: ‘Hydrofracturing’ ⇥ ‘Hydrofaulting’." In SEG Technical Program Expanded Abstracts 2010. Society of Exploration Geophysicists, 2010. http://dx.doi.org/10.1190/1.3513034.

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Burghardt, J., H. A. Knox, T. Doe, D. Blankenship, P. C. Schwering, M. Ingraham, T. J. Kneafsey, et al. "EGS Stimulation Design with Uncertainty Quantification at the EGS Collab Site." In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2224.

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ABSTRACT: Engineering a robust hydraulic connection between wells is one of the most difficult aspects of enhanced geothermal systems (EGS). Designing and constructing such hydraulic connections requires an understanding of the in-situ state of stress and the heterogeneities and discontinuities that naturally exist and may control the stimulation. Even with comprehensive stress and formation characterization programs, substantial uncertainty remains in these key parameters. This is especially the case in high-temperature EGS environments where drilling conditions are often difficult and far fewer logging and testing options are available. This paper presents a new approach for explicitly quantifying the uncertainties in the state of stress using a Bayesian Markov Chain Monte Carlo method. This approach produces a probability distribution for the stress tensor, including a general 3D orientation, that reflects the uncertainties in all the observations or indicators used to constrain the stress state. This method is demonstrated using the characterization data for the EGS Collab Experiment 2 site. The output of the analysis is used to guide the design of the planned stimulations. In the case of research projects like EGS Collab, explicitly quantifying the uncertainties in the stress state allows for more rigorous hypothesis testing by allowing conclusions drawn from the experiments to be interpreted in the context of the uncertain knowledge about conditions in the test bed. 1. INTRODUCTION Enhanced Geothermal Systems (EGS) require use of hydraulic pressure to artificially generate fluid pathways between one or more wells. The hydraulic pressure interacts with the in-situ state of stress and rock properties to create new fractures or enhance the permeability of existing fractures. The fracturing can include contributions from both tensile (Mode I) and shearing (Mode II) displacements (e.g., Norbeck et al., 2018). One concept for creating sustainable EGS reservoirs centers on preferentially creating Mode II shearing displacements on naturally occurring fractures, which is often called shear stimulation or "hydroshearing." The potential advantage to shear-mode stimulation is that when fractures shear, they often also permanently dilate because the asperities on the fracture faces no-longer mate together perfectly after the shearing offset. This has the potential to create a fracture with significantly improved hydraulic conductivity without requiring the placement of proppant as in petroleum stimulation operations.
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Garao, Dario G., Guido Maier, and Achille Pattavina. "Modular EGS Architectures for Optical Interconnections." In 2013 22nd International Conference on Computer Communication and Networks (ICCCN 2013). IEEE, 2013. http://dx.doi.org/10.1109/icccn.2013.6614154.

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Xia, Xiangyang, Yongbin Huang, and Hong Zhu. "Consumer logistics tradeoffs in EGS environment." In 2010 International Conference on Logistics Systems and Intelligent Management (ICLSIM). IEEE, 2010. http://dx.doi.org/10.1109/iclsim.2010.5461229.

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Niezette, Marc, and Dario Lucia. "An EGS-CC-based Core Control Segment." In 15th International Conference on Space Operations. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2684.

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Ko, JeongGil, Qiang Wang, Thomas Schmid, Wanja Hofer, Prabal Dutta, and Andreas Terzis. "Egs: A Cortex M3-Based Mote Platform." In 2010 7th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON). IEEE, 2010. http://dx.doi.org/10.1109/secon.2010.5508223.

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Poureslami Ardekani, E. "Developing Engineered Geothermal Systems (EGS) in Alberta, Canada." In 1st Sustainable Earth Sciences Conference and Exhibition (SES2011). Netherlands: EAGE Publications BV, 2011. http://dx.doi.org/10.3997/2214-4609.20144204.

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Dionisi, Simone, Nieves Salor Moral, and Francois Trifin. "OPALE : Reducing complexity of EGS-CC Automation Procedures." In 15th International Conference on Space Operations. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2671.

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Kneafsey, T. J., P. F. Dobson, C. Ulrich, C. Hopp, V. Rodríguez-Tribaldos, Y. Guglielmi, D. Blankenship, et al. "The EGS Collab Project – Stimulations at Two Depths." In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2261.

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ABSTRACT: The EGS Collab project, supported by the US Department of Energy, is performing intensively monitored rock stimulation and flow tests at the 10-m scale in an underground research laboratory to address challenges in implementing enhanced geothermal systems (EGS). Data and observations from the field tests are compared to simulations to understand processes and build confidence in numerical modeling of the processes. We have completed Experiment 1 (of 3), which examined hydraulic fracturing in a well-characterized underground fractured phyllite test bed at a depth of approximately 1.5 km at the Sanford Underground Research Facility (SURF) in Lead, South Dakota. Testbed characterization included fracture mapping, borehole acoustic and optical televiewers, full waveform sonic, conductivity, resistivity, temperature, campaign p- and s-wave investigations and electrical resistance tomography. Borehole geophysical techniques including passive seismic, continuous active source seismic monitoring, electrical resistance tomography, fiber-based distributed strain, distributed temperature, and distributed acoustic monitoring, were used to carefully monitor stimulation events and flow tests. More than a dozen stimulations and nearly one year of flow tests were performed. Quality data and detailed observations were collected and analyzed during stimulation and water flow tests using ambient temperature and chilled water. We achieved adaptive control of the tests using real-time monitoring and rapid dissemination of data and near-real-time simulation. More detailed numerical simulation was performed to answer key experimental design questions, forecast fracture propagation trajectories and extents, and analyze and evaluate results. Data are freely available from the Geothermal Data Repository. Experiment 2 examines the potential for hydraulic shearing in amphibolite at a depth of about 1.25 km at SURF. This site has a different set of stress and fracture conditions than Experiment 1. The Experiment 2 testbed consists of nine subhorizontal boreholes configured in two fans of two boreholes which surround the testbed and contain grouted-in electrical resistance tomography, seismic sensors, active seismic sources and distributed fiber sensors. A "five-spot" set of test wells that extends from a custom mined alcove includes an injection well and four production/monitoring wells. The testbed was characterized geophysically and hydrologically, and three stimulations have been performed using the Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP) tool to measure strains, and a new strain quantifying tool (downhole robotic strain analysis tool -DORSA) was deployed in a monitoring hole during stimulation. Real-time data were broadcast during stimulations to allow real-time response to arising issues.
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Gallas, Caroline, Ricardo Zanella, Renato Serena Fontaneli, Giovani Stefani Faé, and Carlos Bondan. "DESEMPENHO ZOOTÉCNICO DE TOUROS DA RAÇA WAGYU CRIADOS EM DIFERENTES PASTAGENS DE TRIGO." In I Congresso Brasileiro Online de Práticas Veterinárias: Uma abordagem para animais de grande porte e produção Animal. Revista Multidisciplinar em Saúde, 2022. http://dx.doi.org/10.51161/granvet-07.

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Анотація:
Introdução: Os bovinos Wagyu são originários do Japão e foram selecionados para características de qualidade da carne em decorrência da grande deposição de gordura entremeada as fibras musculares denominada de marmoreio, atualmente ela é conhecida por produzir a melhor carne do mundo. No Brasil a raça chegou a aproximadamente 30 anos onde é criada desde então em sistemas intensivos, com uma dieta nutricionalmente balanceada. No entanto busca-se alternativas de diferentes sistemas de pastejo na criação de animais desta raça.Objetivo:Para tanto o objetivo deste trabalho foi avaliar diferentes cultivares de pastejo na composição de carcaça e desempenho zootécnico de bovinos da raça Wagyu Kuroge (Black Wagyu).Material e métodos:Foram utilizadas pastagens de três cultivares de trigo de duplo propósito (BRS Tarumã, BRS Tarumaxi e BRS Pastoreio) plantadas em linha de 17cm de espaçamento com densidade de 74 sementes/m, a área foi subdividida em 9 piquetes (3 de cada cultivar) tendo cada piquete uma área de 1,5mil m². Os animais touros de 12 meses de idade foram separados aleatoriamente em grupos de carga aproximada à 800Kg/PV/ha. Os animais eram oriundos do mesmo grupo contemporâneo. Três aplicações de adubação nitrogenada foram realizadas a cada 30 dias na dosagem de 100kg/ha (46kg N/ha). Pesagens dos animais foram conduzidas quinzenalmente e ao final do experimento foi realizada ultrassonografia de carcaça para avaliar a espessura de gordura (EGS), marmoreio (IMF), área do olho de lombo (AOL), gordura de picanha (EGP) e conversão alimentar (GPD).Resultados:Foi verificado uma associação entre peso dos animais e AOL r=0,76, P<0.01, indicando que animais que eram mais pesados possuíam uma maior área de olho de lombo. Não foi observado uma correlação entre a IMF com EGP e EGS, no entanto o EGP e EGS estão fortemente correlacionados r=0,8, P<0.01. Conclusão:Animais do grupo BRS Tarumaxi apresentaram um melhor desempenho no quesito IMF quando comparado com os outros dois grupos, P<0.09, em relação ao GPD o grupo BRS Tarumaxi também apresentou um melhor GPD (P<0.1) ao final do experimento. As pastagens de inverno compostas por trigo de duplo propósito, apresentaram ser uma alternativa viável para fonte nutricional de bovinos da Raça Wagyu.
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Звіти організацій з теми "EGS"

1

Langeveld, Willy G. J. The CAD-EGS Project: Using CAD Geometrics in EGS4. Office of Scientific and Technical Information (OSTI), March 2002. http://dx.doi.org/10.2172/799112.

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2

McLarty, Lynn, Daniel Entingh, and Clifton Carwile. Enhanced Geothermal Systems (EGS) R&D Program: Monitoring EGS-Related Research. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/896387.

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Normann, Randy, Dave Glowka, Charles Normann, James Parker, Josip Caja, Don Dustan, Mario Caja, Kouros Sariri, and Craig Beal. Well Monitoring System For EGS. Office of Scientific and Technical Information (OSTI), February 2017. http://dx.doi.org/10.2172/1344858.

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4

Cladouhos, Trenton T., Susan Petty, Mike W. Swyer, Yini Nordin, Geoff Garrison, Matt Uddenberg, Kyla Grasso, et al. Newberry EGS Demonstration: Phase 2.2 Report. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1214834.

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Durrand, Christopher J., Marcus R. Skeem, Ron B. Crockett, and David R. Hall. Stinger Enhanced Drill Bits For EGS. Office of Scientific and Technical Information (OSTI), April 2013. http://dx.doi.org/10.2172/1324456.

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Gillian R. Foulger. Characterization of EGS Fracture Network Lifecycles. Office of Scientific and Technical Information (OSTI), March 2008. http://dx.doi.org/10.2172/926201.

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7

Salguero, D. E. Engineering Graphics System (EGS) user's manual. Office of Scientific and Technical Information (OSTI), January 1989. http://dx.doi.org/10.2172/6363049.

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Cowan, R. Extending EGS With SVG for Track Visualization. Office of Scientific and Technical Information (OSTI), November 2004. http://dx.doi.org/10.2172/839598.

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9

Zemach, Ezra, Peter Drakos, Paul Spielman, and John Akerley. Desert Peak East Enhanced Geothermal Systems (EGS) Project. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1373310.

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Polsky, Yarom, Louis Capuano, John Finger, Michael Huh, Steve Knudsen, A. J. Mansure Chip, David Raymond, and Robert Swanson. Enhanced Geothermal Systems (EGS) Well Construction Technology Evaluation Report. Office of Scientific and Technical Information (OSTI), December 2008. http://dx.doi.org/10.2172/1219316.

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