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Artículos de revistas sobre el tema "Exhaust bend"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de febrero de 2022

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1

Hasson, D. A., and W. L. Flint. "An Investigation of the Liquid Petrol Wall Film in the Manifold of a Carburetted Spark Ignition Engine: Effect of Carburettor and Manifold Geometry on Wall Film Quantities, Engine Performance and Emissions." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 203, no. 2 (1989): 77–89. http://dx.doi.org/10.1243/pime_proc_1989_203_153_02.

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The rate of deposition on the manifold wall of liquid droplets from the multi-component, two-phase stream of fluid flowing in the inlet manifold of a carburetted petrol engine and the re-entrainment of droplets into the stream from the liquid film which flows on the walls have been investigated using a single cylinder crossflow engine. The effect of throttle opening, straight manifold length, a smooth bend and a mitre bend is reported: measurements of exhaust emissions and cycle-to-cycle pressure variation of cylinder pressure are related to wall film quantities. It was found that throttle pos

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2

Ghofur, A., H. Isworo, R. Subagyo, et al. "Modelling study of flue gas flow pattern with pressure, amount and shape variation catalytic converter." Archives of Materials Science and Engineering 1, no. 103 (2020): 5–17. http://dx.doi.org/10.5604/01.3001.0014.1769.

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Purpose: The purpose of this study is to analyse the modelling of exhaust gas flow patterns with variations in pressure, number, and shape of filters on the catalytic converter. Design/methodology/approach: The research method used is a simulation using ANSYS, which starts by creating a converter catalytic model with pressure variations: (0.5-1.5 atm), number of filters: (2-5), and the form of filter-cut/filter-not-cut. Findings: The decrease in velocity is caused by non-uniform velocity in the exhaust gas flow that occurs when passing through a bend in the filter-cut that serves as a directio

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3

Wong, K. Y., H. M. Kamar, and N. Kamsah. "Enhancement of Airborne Particles Removal in a Hospital Operating Room." International Journal of Automotive and Mechanical Engineering 16, no. 4 (2019): 7447–63. http://dx.doi.org/10.15282/ijame.16.4.2019.17.0551.

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This article presents the results of a numerical study to examine the transport of particles in an operating room equipped with an Econoclean ventilation system. Its aims are to reduce the number of particles falling onto the operating table. A simplified CFD model of the operating room was developed and validated based on the measured air velocity distribution. An SST k-ω turbulent flow model was used to simulate the airflow, while a discrete phase model was used to simulate the movement of the airborne particles. The effects of the standing posture of the surgical staff on the settlement of

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4

Balos, Sebastian, Miroslav Dramicanin, Petar Janjatovic, et al. "Influence of Metallic Oxide Nanoparticles on the Mechanical Properties of an A-TIG Welded 304L Austenitic Stainless Steel." Materials 13, no. 20 (2020): 4513. http://dx.doi.org/10.3390/ma13204513.

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Austenitic stainless steels represent a significant aerospace material, being used for various castings, structural components, landing gear components, afterburners, exhaust components, engine parts, and fuel tanks. The most common joining process is tungsten inert gas (TIG) welding, which possesses many advantages such as suitability to weld a wide range of ferrous and non-ferrous metals and alloys, providing high quality welds with good mechanical properties. Its major disadvantage is low productivity due to low penetration and welding speed. This can be overcome by introducing an activatin

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5

Li, Ke Jie, Zhu Li, Xiu Hua Guo, and Yuan Zhen Liu. "The Application of Thermal Insulation Glazed Hollow Bead Concrete in Tunnel Cooling Structure." Applied Mechanics and Materials 226-228 (November 2012): 1699–703. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1699.

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With the mining depth increasing, the effect of temperature on coal mine is outstanding with each passing day. In order to enhance the tunnel insulating layer heat insulation effect, thermal insulation glazed hollow bead concrete will be used in tunnel wall thermal insulation layer, the characteristics of thermal insulation glazed hollow bead concrete will be discussed and the appropriate mixture ratio and coefficient of heat conductivity will also be determined, as well as in the basis of reasonable theoretical analysis and derivation, prediction of the thermal insulation material of surround

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6

Albers, A., H. Weiler, D. Emmrich, and B. Lauber. "A New Approach for Optimization of Sheet Metal Components." Advanced Materials Research 6-8 (May 2005): 255–62. http://dx.doi.org/10.4028/www.scientific.net/amr.6-8.255.

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Beads are a widespread technology for reinforcing sheet metal structures, because they can be applied without any additional manufacturing effort and without significant weight increase. The two main applications of bead technology are to increase the stiffness for static loading conditions and to reduce the noise and vibrations for dynamic loadings. However, it is difficult to design the bead patterns of sheet metal structures due to the direction-controlled reinforcement effect of the beads. A wrong bead pattern layout can even weaken the properties of the structure. In the past, the designs

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7

Nejad, Puriya Mohamad Gholy, and Mohammad Sadegh Hatamipour. "Investigation on the Removal of Carbon Dioxide Exhausted from Industrial Units in a Lab-Scale Fluidized Bed Reactor." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 2 (2020): 579–90. http://dx.doi.org/10.9767/bcrec.15.2.7882.579-590.

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In this study, CO2 removal efficiency from flue gas was investigated in a fluidized bed reactor under semi-dry conditions. A lab-scale fluidized bed reactor, filled with inert glass beads, was used to investigate the effect of operating parameters on the CO2 removal efficiency using calcium hydroxide slurry as the absorbent. The Taguchi design method was used to design the experiments. The maximum inlet concentration of CO2 was 3 vol%. The most important factors were the reaction surface area, inlet gas velocity, inlet CO2 concentration, absorbent solution flow rate, inlet gas temperature and

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8

Golomb, Richard, Vivek Sahai, and Dah Yu Cheng. "A New Tailpipe Design for GE Frame-Type Gas Turbines to Substantially Lower Pressure Losses." Journal of Turbomachinery 125, no. 1 (2003): 128–32. http://dx.doi.org/10.1115/1.1515335.

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Many GE frame gas turbines have a unique 90-deg tailpipe exhaust system that contains struts, diffusers, and turning vanes. As confirmed in a recent report by GE and other authors, it is known in the industry that this tailpipe design has large pressure losses. In this recent report a pressure loss as high as 60 in. of water (0.15 kgs/sqcm) was cited. Due to the flow separations they create, the report indicates that the struts can cause very high-pressure losses in the turbine. The report also states that these pressure losses can vary with different turbine load conditions. Cheng Fluid Syste

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9

Borhan, M. S., Shafiqur Rahman, and Niloy Chandra Sarker. "Dry Scrubbing of Hydrogen Sulfide Gas Using Nano Zinc Oxide Coated Glass Beads." Applied Engineering in Agriculture 33, no. 3 (2017): 407–18. http://dx.doi.org/10.13031/aea.12145.

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Abstract. Hydrogen sulfide (H2S) is one of the most toxic and smelly gases emitted from animal production facilities, which also acts as a catalyst poison in many industrial processes. The principal objective of this research was to develop a dry scrubber to adsorb H2S gas efficiently from airstreams mimicking air exhausts of animal and poultry barns at the ambient atmospheric condition. Nano zinc oxide (nZnO) coated 3-mm sized glass beads were investigated to adsorb H2S gas in a vertical dry scrubber setting. Colloids of nZnO were prepared and thin films of nZnO were grown on the surfaces of

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10

Petrella, Andrea, Danilo Spasiano, Vito Rizzi, Pinalysa Cosma, Marco Race, and Nicoletta De Vietro. "Lead Ion Sorption by Perlite and Reuse of the Exhausted Material in the Construction Field." Applied Sciences 8, no. 10 (2018): 1882. http://dx.doi.org/10.3390/app8101882.

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This paper deals with the possibility of using perlite as a lead ion sorbent from industrial wastewater. Dynamic (laboratory column) operations were carried-out using beads, which were percolated by metals in a 2–10 mg·L−1 concentration range. To this purpose, lead ion solutions were eluted in columns loaded with different amounts of sorbent (2–4 g) within a 1–2 mm bead size range, at 0.15–0.4 L·h−1 flow-rates. Tests were performed to complete sorbent exhaustion (column breakthrough). The highest retention was obtained at 0.3 L·h−1, with 4 g of perlite and 10 mg·L−1 of influent, lead ion conce

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11

Taoda, Hiroshi. "Decomposition of Dioxins in Gas and Water Using Photocatalytic Silica-Gel." Materials Science Forum 486-487 (June 2005): 41–44. http://dx.doi.org/10.4028/www.scientific.net/msf.486-487.41.

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Dioxins are extremely toxic, and it is difficult to treat them with the conventional method. When irradiated by light, photocatalysts generate strong oxidative potential and decomposes almost all organic substances containing dioxins to water, carbon dioxide and others. Silica-gel has high adsorptive activity as well as large surface area, and it is transparent to ultraviolet light. Photocatalytic silica-gel was prepared by a dip coating method using TiO2 sol obtained by hydrolyzing titanium tetraisopropoxide on silica-gel bead (about 3mm in diameter) and heat-treated at 550°C. Since the surfa

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12

Patil, Shankargouda, Mohammed E. Sayed, Maryam H. Mugri, et al. "Allicin May Promote Reversal of T-Cell Dysfunction in Periodontitis via the PD-1 Pathway." International Journal of Molecular Sciences 22, no. 17 (2021): 9162. http://dx.doi.org/10.3390/ijms22179162.

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We evaluated the role of allicin in periodontitis using an in silico and in vitro design. An in silico docking analysis was performed to assess the plausible interactions between allicin and PD-L1. The cytokine profile of gingival crevicular fluid (GCF) samples obtained from periodontitis patients was estimated by cytometric bead array. CD3+ lymphocytes isolated from the peripheral blood were sorted and characterized using immunomagnetic techniques. Cultured and expanded lymphocytes were treated with the GCF samples to induce T-cell exhaustion. Optimum concentrations of allicin were added to e

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13

Merklein, Marion, and Martin Grüner. "Mechanical Behaviour of Ceramic Beads Used as Medium for Hydroforming at Elevated Temperatures." Key Engineering Materials 410-411 (March 2009): 61–68. http://dx.doi.org/10.4028/www.scientific.net/kem.410-411.61.

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The need of light weight construction for high efficient vehicles leads to the use of new materials like aluminium and magnesium alloys or high strength and ultra high strength steels. At elevated temperatures the formability of steel increases as the flow stresses decrease. Forming high complex geometries like chassis components or components of the exhaust system of vehicles can be done by hydroforming. The hydroforming process by oils is limited to temperatures of approximately 300 °C and brings disadvantages of possible leakage and fouling. Using granular material like small ceramic beads

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14

Vogman, L. P., D. A. Korolchenko, and A. V. Khryukin. "Determination of conditions for spontaneous combustion of combustible dust deposits on equipment, in ventilation systems, and aspiration systems of buildings and structures." Pozharovzryvobezopasnost/Fire and Explosion Safety 29, no. 4 (2020): 32–41. http://dx.doi.org/10.22227/pvb.2020.29.04.32-41.

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Introduction. Determination of the scientifi cally substantiated frequency of cleaning the ducts of local exhausts of industrial buildings and structures is one of the tasks in the fi eld of fi re safety of industrial enterprises. The paper describes design methods, in particular, a method for determination of the induction period during spontaneous combustion of dust deposits in air ducts of ventilation systems and equipment, which can be used in solving problems focused on the development of preventive measures to ensure their fi re and explosion safety.Methods. In order to solve the problem

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15

Thalhofer, Colin, Ryan Montler, Melissa Maxwell, et al. "172 Increasing activation of human tumor-reactive T cells (CD39+CD103+CD8+) by gene silencing of PD1 with self-delivering RNAi INTASYL(TM)." Journal for ImmunoTherapy of Cancer 8, Suppl 3 (2020): A186. http://dx.doi.org/10.1136/jitc-2020-sitc2020.0172.

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BackgroundTumor Infiltrating Lymphocyte (TIL) therapy has proven effective for patients with stage IV melanoma, however there are critical issues that can limit the efficacy of standard TIL therapy across a wide range of different malignancies. We and others have shown that some tumor types contain a low percentage of tumor-specific T cells. We hypothesize that most of the patients that do not respond to TIL therapy are likely receiving a low percentage of tumor-reactive T cells and therefore a high percentage of non-therapeutic bystander TIL. We have developed a streamlined method that expand

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16

Kato, Tomonori, Tetsuya Nishida, Miho Murase, Yoshinori Ito, Makoto Murata, and Tomoki Naoe. "Correlation of Serum IL-6 Level with Exhaustion of Cytomegalovirus-specific T Cells After Hematopoietic Stem Cell Transplantation." Blood 118, no. 21 (2011): 360. http://dx.doi.org/10.1182/blood.v118.21.360.360.

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Abstract Abstract 360 Preemptive treatments employing antiviral drugs have decreased in cytomegalovirus (CMV) infection. However, CMV has remained one of the most common pathogens causing morbidity and mortality after allogeneic hematopoietic stem cell transplantation (HSCT). Chronic viral infections with several human viruses were shown to be associated with exhausted T cells with high expression of the inhibitory molecule programmed death 1 (PD-1). PD-1 expression on CMV-specific T cells after HSCT has not been well examined. We evaluated the involvement of exhausted CMV-specific T cells cha

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17

Sherani, Farha, Duane Moogk, Anuj Bapodra, et al. "2081." Journal of Clinical and Translational Science 1, S1 (2017): 55–56. http://dx.doi.org/10.1017/cts.2017.199.

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OBJECTIVES/SPECIFIC AIMS: To characterize the CD4+ T-cell response during CTLA-4 blockade immunotherapy with ipilimumab in patients with metastatic melanoma by correlating cytokine profiles with phenotypic changes in the intratumoral lymphocyte compartment of tumor biopsies obtained before and after treatment. METHODS/STUDY POPULATION: Peripheral blood mononuclear cell samples were obtained from patients with metastatic melanoma undergoing monotherapy with ipilimumab via the Interdisciplinary Melanoma Cooperative Group at New York University Langone Medical Center. We isolated CD4+ T-cells and

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18

Brito dos Santos, Susana, Mark C. Allenby, Athanasios Mantalaris, and Nicki Panoskaltsis. "Early Erythroid Development Is Enhanced with Hypoxia and Terminal Maturation with Normoxia in a 3D Ex Vivo Physiologic Eythropoiesis Model." Blood 128, no. 22 (2016): 2453. http://dx.doi.org/10.1182/blood.v128.22.2453.2453.

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Abstract Reproduction of dynamic physiologic erythropoiesis in vitro requires a three-dimensional (3D) architecture, erythroblast-macrophage interactions and cytokines such as erythropoietin (EPO). The role of oxygen concentration gradients in this process is unclear. We have created a 3D bone marrow (BM) biomimicry using collagen-coated polyurethane scaffolds (5mm3) to expand cord blood mononuclear cells (CBMNCs) in a cytokine-free environment for 28 days (D). Addition of EPO to this system induces mature erythropoiesis. We hypothesised that physiologic concentrations of cytokines - stem cell

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19

Solman, Isabelle G., Marlene Taylor, Hana You, et al. "Ibrutinib Treatment Improves T-Cell Proliferative Ability and Effector Function in Relapsed/Refractory Chronic Lymphocytic Leukemia (CLL) Patients." Blood 132, Supplement 1 (2018): 3114. http://dx.doi.org/10.1182/blood-2018-99-110848.

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Abstract Background: CLL is a B-cell malignancy characterized by profound immune dysregulation, including dysfunctional T cells. Ibrutinib (ibr), a first-in-class, once-daily BTK inhibitor, is approved in the US for the treatment of CLL/SLL, and has been reported to additionally inhibit ITK in T cells. Previous studies showed that ibr has a positive impact on T-cell compartments by decreasing abnormally elevated regulatory T cells and pseudo-exhausted effector T cells, while preserving naive T-cell counts post 1 year of treatment (Solman ASH Lymphoma 2016; Solman ASCO 2017). Moreover, lower in

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20

Graham, Charlotte, Agnieszka Jozwik, Ruby Quartey-Papafio, et al. "Allogeneic Anti-CD19 CAR T Cells Manufactured from Healthy Donors Provide a Unique Cellular Product with Distinct Phenotypic Characteristics Compared to CAR T Cells Generated from Patients with Mature B Cell Malignancies." Blood 134, Supplement_1 (2019): 3228. http://dx.doi.org/10.1182/blood-2019-123018.

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Despite the success of autologous anti-CD19 CAR T cell therapy in B-Acute lymphoblastic leukaemia (B-ALL) and Diffuse Large B Cell Lymphoma (DLBCL), treatment failures occur. One contributing factor may be the intrinsic T cell fitness of the CAR T cell product that is influenced by the underlying malignancy and prior treatments. With the advent of gene editing, 'off the shelf' non-HLA matched healthy donor (HD) CAR T cells are under investigation for the treatment of patients (pts) in clinical trials. UCART19 (S68587) is a first-in-class allogeneic CAR T cell product expressing a second genera

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21

Maqsood, Asim, and A. M. Birk. "Improving the Performance of a Bent Ejector With Inlet Swirl." Journal of Engineering for Gas Turbines and Power 130, no. 6 (2008). http://dx.doi.org/10.1115/1.2943196.

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Ejectors are commonly employed in gas turbine exhaust systems for reasons such as space ventilation and IR suppression. Ejectors may incorporate bends in the geometry for various reasons. Studies have shown that the bend has a deteriorating effect on the performance of an ejector. This work was aimed to investigate the effect of exhaust gas swirl on improving the performance of a bent ejector. Four short oblong ejectors with different degrees of bend in the mixing tube and four swirl conditions were tested in this study. The primary nozzle, in all cases, was composed of a circular to oblong tr

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22

"TIMETAL EXHAUST XT." Alloy Digest 63, no. 6 (2014). http://dx.doi.org/10.31399/asm.ad.ti0156.

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Abstract Timetal Exhaust XT is a lean alloy, but exhibits good corrosion resistance and higher strength than needed for automotive exhaust. This datasheet provides information on composition, physical properties, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: Ti-156. Producer or source: Timet.

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23

Keep, Joshua A., and Ingo H. J. Jahn. "Design of an Annular-Radial Diffuser for Operation With a Supercritical CO2 Radial Inflow Turbine." Journal of Engineering for Gas Turbines and Power 141, no. 8 (2019). http://dx.doi.org/10.1115/1.4043431.

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Radial inflow turbines are a relevant architecture for energy extraction from supercritical CO2 power cycles for scales less than 10 MW. To ensure stage and overall cycle efficiency, it is desirable to recover exhaust energy from the turbine stage through the inclusion of a suitable diffuser in the turbine exhaust stream. In supercritical CO2 Brayton cycles, the high turbine inlet pressure can lead to sealing challenges at small scale if the rotor is supported from the rotor rear side in the conventional manner. An alternative is a layout where the rotor exit faces the bearing system. While su

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24

"Effect of Preheated Pure Oxygen on IC Engine Performance using Heat Pipe Exhaust Heat Recovery Method." International Journal of Innovative Technology and Exploring Engineering 8, no. 12 (2019): 1892–97. http://dx.doi.org/10.35940/ijitee.l2877.1081219.

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Nowadays, the requirements and dependency of people on vehicles are increasing day by day which lead to high emission of flue gases and it results in the severe environment pollution. Many researchers have done research to improve the efficiency of IC engine. The main reason for less efficiency is the incomplete combustion of fuel in the IC engine. To improve the efficiency, we carried out the experiments with two stroke petrol engine by supplying preheated pure oxygen instead of air. The oxygen is preheated by the exhaust heat recovery system using heat pipe. In this research work, engine per

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25

"On the Use of Laser Beam Welding for Austenitic Stainless Steel Type 316L and Stainless Steel Type 304 for Aerospace Applications." International Journal of Innovative Technology and Exploring Engineering 9, no. 3 (2020): 1546–54. http://dx.doi.org/10.35940/ijitee.c8600.019320.

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Currently wide range of aircraft parts have been welded by using laser beam welding. In this paper we have analyzed the strength of laser beam welded joint of stainless steel materials 316 L and 304. The Micro and Macro welding techniques are used for dissimilar stainless steel materials. The metal sheets are welded with a laser power of 1000 w with a bead width of 0.5 mm on both sides of the sheet by using micro laser beam welding and the macro laser beam welding is used to weld the metal sheets with 1800 w laser power along with a bead width of 3mm on one side of the sheet. The strength and

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26

Rajput, Pankaj, and Sunil Kumar. "Operational Control of Mixing Enhancement and Far-Field Jet Noise Suppression Using Downstream Fluidic Injection." Journal of Vibration and Acoustics 142, no. 1 (2019). http://dx.doi.org/10.1115/1.4045266.

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Abstract A novel fluid injection scheme is analyzed for its ability to suppress the far-field jet noise using multiple radial microjets placed downstream from the nozzle exhaust. Contrary to other previous research studies, which injected fluid either inside the nozzle or just at the nozzle exhaust, this injection scheme uses a coaxial injector tube to inject multiple equally spaced microjets perpendicular to the jet axis at an axial location downstream from the nozzle exhaust. Microjet injection closer to the jet axis leads to the formation of a counter rotating vortex pair (CVP) close to the

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27

Antonio Laviola, Francesco. "La positività del reale nel concetto cardoniano di bene. The Positivity of the Real in the Cardonian Concept of the Good." Metafísica y persona, no. 8 (May 29, 2017). http://dx.doi.org/10.24310/metyper.2012.v0i8.2760.

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L’articolo cerca di evidenziare le ragioni per cui si può affermare che la realtà è positiva pur essendo attraversata dal limite e dalla drammaticità del male. Il filosofo studiato è il catalano Carlos Cardona il quale affronta nella sua opera il concetto di bene ontologico. Il presente studio si sofferma soprattutto sugli elementi più significativi del concetto di bene ontologico, senza la pretesa di esaurire tutta la vastità della questione, quali la considerazione dell’essere come bene perché atto a perfezionare un soggetto; dell’origine della bontà delle cose nella Bontà divina e dell’impo

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28

Kalpakli Vester, Athanasia, Ramis Örlü, and P. Henrik Alfredsson. "Turbulent Flows in Curved Pipes: Recent Advances in Experiments and Simulations." Applied Mechanics Reviews 68, no. 5 (2016). http://dx.doi.org/10.1115/1.4034135.

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Curved pipes are essential components of nearly all the industrial process equipments, ranging from power production, chemical and food industries, heat exchangers, nuclear reactors, or exhaust gas ducts of engines. During the last two decades, an interest on turbulent flows in such conduits has revived, probably due to their connection to technical applications such as cooling systems of nuclear reactors (e.g., safety issues due to flow-induced fatigue) and reciprocating engines (e.g., efficiency optimization through exhaust gas treatment in pulsatile turbulent flows). The present review pape

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29

Sears, Cornelia, and Jessica Johnston. "Wasted Whiteness: The Racial Politics of the Stoner Film." M/C Journal 13, no. 4 (2010). http://dx.doi.org/10.5204/mcj.267.

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We take as our subject what many would deem a waste of good celluloid: the degraded cultural form of the stoner film. Stoner films plot the experiences of the wasted (those intoxicated on marijuana) as they exhibit wastefulness—excessiveness, improvidence, decay—on a number of fronts. Stoners waste time in constantly hunting for pot and in failing to pursue more productive activity whilst wasted. Stoners waste their minds, both literally, if we believe contested studies that indicate marijuana smoking kills brains cells, and figuratively, in rendering themselves cognitively impaired. Stoners w

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30

Taylor, Alison. "“There’s Suspicion, Nothing More” — Suspicious Readings of Michael Haneke’s Caché (Hidden, 2005)." M/C Journal 15, no. 1 (2011). http://dx.doi.org/10.5204/mcj.384.

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Michael Haneke’s film Caché tells the story of a bourgeois family in peril. The comfortable lives of the Laurents—husband Georges (Daniel Auteuil), wife Anne (Juliette Binoche), and teenage son Pierrot (Lester Makedonsky)—are disrupted when surveillance tapes of their home and private conversations are delivered to them anonymously. Ostensibly Caché sits in a familiar generic framework: the thriller narrative of a family under threat is reminiscent of films such as The Desperate Hours (1955), Cape Fear (1962), and Straw Dogs (1971). The weight of outside forces causes tension within the family

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