Готові списки джерел за темами / Modified stage

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Добірка наукової літератури з теми "Modified stage"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Modified stage"

Attanavanich, Sukasom, Alisa Limsuwan, Suthep Vanichkul, Panuwat Lertsithichai, and Montein Ngodngamthaweesuk. "Single-Stage versus Two-Stage Modified Fontan Procedure." Asian Cardiovascular and Thoracic Annals 15, no. 4 (August 2007): 327–31. http://dx.doi.org/10.1177/021849230701500413.

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We compared surgical outcomes of the single-stage and two-stage modified Fontan procedures to clarify clinical superiority. Of 28 children undergoing a modified Fontan procedure from October 1995 to October 2005, 15 had a 1-stage and 13 had a 2-stage operation. In the 2-stage group, pulmonary artery growth was evaluated before and after the first stage. Operative mortality was 26.6% in the 1-stage group and 0% in the 2-stage group. The benefits of a previous bidirectional Glenn shunt were decreased cyanosis and volume overload, but there was no significant difference in pulmonary artery growth reflected in pulmonary artery indices before and after the bidirectional Glenn procedure. Older children underwent a 2-stage modified Fontan procedure and had better outcomes in terms of lower mortality, improved oxygen saturation, decreased volume load, and less deterioration of atrioventricular valve regurgitation.

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Mathew, Derick, Athira P. Ashok, and Bincy M. Mathew. "Modified Single Stage AC-AC Converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 1 (March 1, 2015): 1. http://dx.doi.org/10.11591/ijpeds.v6.i1.pp1-9.

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<p>The paper describes the single stage AC-AC converter. This converter is a good alternative to quasi direct back to back converter. This single stage converter is called Matrix Converter. Matrix converter is an array of controlled semiconductor switches that connects three phase source to the three phase load. This converter provides bidirectional power flow, sinusoidal input and output waveforms and they have no dc link storage elements. Simulation model and results presented showing Venturini control method of matrix converter.</p>

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Atallah, Ihab, Ahmed Aldkhyyal, and Paul F. Castellanos. "Modified single-stage segmental cricotracheal resection." European Archives of Oto-Rhino-Laryngology 275, no. 1 (October 23, 2017): 139–46. http://dx.doi.org/10.1007/s00405-017-4753-y.

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Novikova, M. A., A. V. Lozanova, V. V. Veselovskii, V. A. Dragan, and A. M. Moiseenkov. "Stage synthesis of three modified phenols." Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 36, no. 2 (February 1987): 315–19. http://dx.doi.org/10.1007/bf00959372.

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Liao, Xinxin, Qingbo He, and Zhihua Feng. "Dynamic mass isolation method utilized in self-moving precision positioning stage for improved speed performance." Review of Scientific Instruments 93, no. 5 (May 1, 2022): 055004. http://dx.doi.org/10.1063/5.0079742.

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The method of dynamic mass isolation is utilized in a self-moving precision positioning stage actuated by a piezostack to increase its moving speed. Two prototypes, namely, the referenced stage and the modified stage, have been fabricated. The only difference between the two stages is the flexure hinge manufactured in the modified stage to achieve an efficient dynamic mass isolation method. The step response has been investigated. The modified stage with dynamic mass isolation presents the average displacement of 6.6 µm with the applied step voltage being 55 V. By contrast, the referenced stage without dynamic mass isolation presents the average displacement of 1.6 µm. As a type of quasi-static piezoactuator/motors, the modified stage moves approximately four times faster than the referenced stage under the same driving frequency. By utilizing the dynamic mass isolation method, the modified stage still features the advantages of the referenced stage, such as cost-effective controllers, heavy-load capability, and motion of nanoscale. The concept and technique presented in this study can be applied to precision positioning stages for improved speed performance.

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Chu, Lijing, Yi Li, Linghui Huang, Jingyu Qiu, Xiaolong Sun, Zhi Cang, and Jianbing Lv. "Applying Feasibility Investigation of Resin Modifying Agent in Asphalt Pavement Materials." Advances in Civil Engineering 2021 (December 3, 2021): 1–9. http://dx.doi.org/10.1155/2021/9362400.

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In order to promote the resin modifying agent applied into pavement materials, a type of resin modifying agent was selected as the modifier to prepare modified asphalt. The molecular crystal structure of the modifying material was characterized by using the X-ray diffraction test (XRD). The microstructure and element composition of PA6 was investigated through focused ion beam scanning electron microscopy (FIB-SEM). The thermal property and functional groups of PA6 were studied by thermogravimetric analysis-Fourier infrared spectroscopy (TG-FTIR) test. The physical property and rheological properties of PA modified asphalt were evaluated to confirm the applying feasibility of PA6 in asphalt. The results indicated that PA6 was the semicrystalline polymer and the existence of γ crystal form might improve the toughness of asphalt materials effectively. The thermal decomposition process of PA6 could be divided into three stages roughly: inert weight loss stage, rapid weight loss stage, and stable stage. The amount of PA6 modifier should be appropriately controlled during the application process to ensure the comprehensive effect of PA6 on high-temperature performance and low-temperature performance. The corresponding initial modulus attenuation value of PA modified asphalt was less than 70# asphalt under the same test conditions.

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Guoxiao Guo, Daowei Wu, and Tow Chong Chong. "Modified dual-stage controller for dealing with secondary-stage actuator saturation." IEEE Transactions on Magnetics 39, no. 6 (November 2003): 3587–92. http://dx.doi.org/10.1109/tmag.2003.819478.

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Ma, Tengxiao, Feng Xie, and Zhengwen Zhang. "Modified 2-Stage Method for Auricular Reconstruction." Annals of Plastic Surgery 80, no. 6 (June 2018): 628–33. http://dx.doi.org/10.1097/sap.0000000000001413.

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Blank, Jos L. T., and Vivian Valdmanis. "A modified three-stage data envelopment analysis." European Journal of Health Economics 6, no. 1 (March 2005): 65–72. http://dx.doi.org/10.1007/s10198-004-0260-3.

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Shi, Yi, and Hongwu Zhu. "Proposal of a stage-by-stage design method and its application on a multi-stage multiphase pump based on numerical simulations." Advances in Mechanical Engineering 13, no. 1 (January 2021): 168781402098731. http://dx.doi.org/10.1177/1687814020987317.

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Rotodynamic multiphase pumps are usually equipped with many compression units to provide sufficient boosting pressure for the transportation of production fluid in gas oil field. It is a challenge to maintain pump performance while flow parameters in each stage vary due to the compressibility of gas-liquid phase. In this article, a stage-by-stage design method is proposed to improve the boosting capability of a multiphase pump. Variations of flow parameters in each stage are investigated based on computational fluid dynamics (CFD) numerical simulation. Available methods to determinate main impeller geometry parameters of impeller are discussed. The stage-by-stage design method is applied on a five-stage multiphase pump when the inlet gas volume fraction (GVF) are 30% and 50% separately. The second stage is modified base on its corresponding inlet flow parameters when inlet GVF is 30% while the second and third stage are modified when inlet GVF is 50%. Flow parameters, pressure distribution and velocity distribution are compared between the original pump and modified pump. Differential pressure of the modified pump increases by 53.72 kPa and 58.57 kPa respectively when inlet GVFs are 30% and 50%. The feasibility of the stage-by-stage design method is verified through the comparison results.

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Дисертації з теми "Modified stage"

Gendron, David. "Better Differentiation of Kohlberg's Stage 6 Using a Modified Form of Rest's Defining Issues Test." TopSCHOLAR®, 1987. https://digitalcommons.wku.edu/theses/2380.

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The present research attempted to modify Rest's Defining Issues Test (DIT) in order to better differentiate stage 6 moral reasoners from stage 5 reasoners. A review of the literature showed that the DIT seems to be both reliable and valid, yet it is unable to clearly differentiate between the stages of principled moral reasoning. After three pilot tests, newly developed stage 6 items were added to the DIT. The revised DIT was then administered to people believed to be stage 6 reasoners. Of the 30 respondents, three made the stage 6 cutoff. No stage 6 items were shown to clearly differentiate between stages 5 and 6.

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Zahiri, Azar Maryam. "Early Stage Hot Corrosion Behavior of Pt/Cr-Modified ß-NiAl Alloys at 700°C." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1434558093.

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Marino, Daniel. "Using nonlinear ultrasound measurements to assess the stage of thermal damage in modified 9%Cr ferritic martensitic steel." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53027.

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This research investigates second harmonic generation in Rayleigh surface waves propagating in 9%Cr ferritic martensitic steel. Previous experimental results show that the nonlinearity parameter is sensitive to certain changes in a material's properties such as thermal embrittlement and hardness changes. Therefore, the nonlinearity parameter can be used as an indicator of thermal damage due to changes in dislocation density and precipitations. The specimens are isothermally aged for different holding times to create progressive changes in the microstructure and obtain different levels of thermal aging damage. As aging progresses the dislocation density decreases and precipitations are formed; these microstructural evolutions lead to changes in the nonlinearity parameter β. Nonlinear ultrasonic experiments are conducted for each specimen using a wedge transducer for generation and an air-coupled transducer for detection of Rayleigh surface waves. The amplitudes of the first and second order harmonics are measured at different propagation distances, and these amplitudes are used to obtain the relative nonlinearity parameter for each specimen at different aging stages. Conclusions about microstructural changes are drawn based on the nonlinear Rayleigh surface wave measurement and complementary measurements including scanning electron microscopy (SEM) and Rockwell HRC hardness. The results indicate that the nonlinearity parameter is very sensitive to the dislocation density and precipitate formation, and thus can be used to track the microstructural change in this material during the process of thermal aging.

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D'Ambrosio, Jessica Leigh. "Perspectives on the Geomorphic Evolution and Ecology of Modified Channels and Two-Stage Ditches in the Agriculturally-Dominated Midwestern United States." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1356038774.

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Afiat, Milani Alireza. "Voltage regulation in a single-stage three-phase boost-inverter using modified phasor pulse width modulation method for stand-alone applications." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16219.

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Master of Science
Department of Electrical and Computer Engineering
Behrooz Mirafzal
In this thesis, a modified version of the phasor pulse width modulation (PPWM) switching method for use in a single-stage three-phase boost inverter is presented. Because of the required narrow pulses in the PPWM method and limitations in controller resolution, e.g. dSPACE, the desired switching pattern for a boost inverter requires a costly processor. A low resolution processor can cause pulse dropping which results in some asymmetric conditions in output waveforms of the boost inverter and therefore, an increase in the THD of the output waveform. In order to solve this problem, a new switching pattern is developed which guarantees symmetric conditions in the switching pattern by discretizing the switching pattern in every switching cycle. This switching pattern has been applied to a boost inverter model developed by SimPowerSystems toolbox of MATLAB/Simulink. The model has been simulated in a wide range of input DC voltage and load. Moreover, a laboratory-scaled three-phase boost inverter has been designed, built, and tested using an identical switching pattern in the same input voltage and load range. Both simulation and experimental results confirm the effectiveness of the new switching pattern.

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Shen, Peikang. "A study of modified tungsten trioxide electrodes." Thesis, University of Essex, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315727.

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Oksasoglu, Ali. "An analysis of state-variable filters and development of modified state-variable filters." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185361.

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This study extends the idea and the technique of realizing 2ⁿᵈ-order state variable filters to the realization of single block nᵗʰ-order state variable filters and introduces a modified realization with different design procedures. The effects of gain-bandwidth on the performance of state variable filter realizations with respect to properties, such as, magnitude and phase characteristics and the actual pole locations are investigated and discussed. Various methods of compensation for these effects are also addressed.

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Chemlali, Alexander, and Rickard Norberg. "Shear cracks in reinforced concrete in serviceability limit state." Thesis, KTH, Betongbyggnad, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169591.

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Shear cracks are formed when high oblique tensile stresses, e.g. in thin webs, exceed the tensile strength. A known example of this phenomenon is the extensive shear cracks that were found on the box-girder bridges Gröndal and Alvik, which were mainly caused by insuﬃcient amount of shear reinforcement. In order to avoid this incident (inadequate amount of shear reinforcement), the reinforcement stress is often being assumed as a ultimate limit load in order to fulﬁll requirements regarding crack control in the service-ability limit state (SLS). This method has led to a overestimation of the reinforcement amount in bridge-design. The aim of this master thesis is therefor to study the shear crack phenomenon and investigate if the amount of shear reinforcement in bridges can be reduced. The ﬁrst part of this thesis studies the shear cracking behavior in concrete in a plane stress state, while the second part focus how design standards as well as manuals treats shear cracks. Shear cracking in the reinforced concrete panels has been studied with non-linear ﬁnite element analysis and compared to experimental testings performed by the University of Toronto. Three diﬀerent loading conditions for the panels has been analyzed: pureshear, compression or tension combined with shear. The panels are to represent parts of a web in a box-girder bridge that are subjected to in-plane stresses. The non-linear ﬁnite element analysis was performed in the FE-program Atena where mainly the crack propagation and crack pattern were studied. The material model in Atena is a smeared crack model with either ﬁxed or rotated crack direction. The panel analysis, in SLS, gave various results. For loading conditions pure shear and tension/shear, the response of the FE-analysis gave a similar result regarding crack pattern but diﬀered in size of crack width. For compression/shear, only micro-cracks developed and did not reﬂect the result from the real panel tests. This may be the consequence of a too stiﬀ FE-model and the fact that, in the real tests, some cracks occurred due to out-of-plane bending. With methods described in Eurocode 2 and the Swedish handbook for EC2, a shear crack calculation model was created in order to determine the reinforcement stress and crack width. As a reference for the shear crack calculations, a wing structure (1 m strip) has been used which is part of a railway bridge located in Abisko. These calculations were done in order to investigate if the amount of shear reinforcement could be reduced and at the same time fulﬁll crack control demands in SLS. The bridge department at Tyréns AB concluded, according to a truss model, that the wing section should be reinforced with a amount of 14.1 cm2/m2 while our model showed that the crack width demand could be fulﬁlled with a equivalent amount of 9.82 cm2/m2, i.e. a reduction around 30%.

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Sengupta, Ishita. "Solid State NMR Structural Studies of Proteins Modified with Paramagnetic Tags." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354321906.

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Allison, Francis James. "Aqueous sol gel derived titania and modified titania for biomedical applications." Thesis, University of Nottingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251968.

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Книги з теми "Modified stage"

Committee, New York (State) Legislature Senate Higher Education. In the matter of a public hearing on genetically modified crops in New York State: Before the New York State Senate Standing Committee on Higher Education and Standing Committee on Consumer Protection. [Clifton Park, N.Y.]: Candyco Transcription Service, 2000.

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International Food Policy Research Institute, ed. The politics of precaution: Genetically modified crops in developing countries. Baltimore: Johns Hopkins University Press, 2001.

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Legislation, California Legislature Senate Select Committee on International Trade Policy and State. Informational hearing, Senate Select Committee on International Trade Policy and State Legislation: Biotechnology, international trade policy, and the risks to California legislative power : transcript of hearing. Sacramento, CA: Senate Publications, 2003.

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Ellis, Stephen Paul. The development of a modified Z-blade mixer as a novel solid state fermenter. Birmingham: University of Birmingham, 1992.

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Universidad Autónoma Agraria "Antonio Narro"., ed. La globalización en la agricultura: Las negociaciones internacionales en torno al germoplasma agrícola. México, D.F: Universidad Autónoma Agraria Antonio Narro, 2002.

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New York (State). Legislature. Assembly. Standing Committee on Agriculture. Joint public hearing, should New York State regulate genetically-modified organisms (GMOs) and foods produced from these GMOs. Mineola, NY: En-De Reporting Services, 2000.

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Food solidarity: French farmers and the fight against industrial agriculture and genetically modified crops. Durham, NC: Duke University Press, 2013.

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Virginia. State Board of Education. Virginia state plan for vocational education: Three-year program plan, FY 1986-88, as modified March, 1986. Richmond, Va: State Board of Vocational Education, 1985.

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Joseph, Murphy. Governing the transatlantic conflict over agricultural biotechnology: Contending coalitions, trade liberalisation and standard setting. London: Routledge, 2006.

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Voelker, David C. Modified level II streambed-scour analysis for structure I-465-158-4458 crossing State Ditch in Marion County, Indiana. Indianapolis, Ind: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Частини книг з теми "Modified stage"

Weng, Yu Guo, and Bin Qiao. "Stage I Modified Norwood Procedure." In Surgical Atlas of Functional Single Ventricle and Hypoplastic Left Heart Syndrome, 133–37. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8435-5_24.

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Rossner, W. "Pore Removal During Final Stage Sintering of Modified Yttria." In Science of Sintering, 405–10. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-0933-6_34.

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Richie, Jerome P. "Modified retroperitoneal lymphadenectomy for patients with clinical stage I testicular cancer." In Urologic Oncology, 35–54. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-1595-7_3.

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Kim, Si W., Jin Y. Park, Jung K. Kim, Jae H. Cho, Young N. Chun, In H. Lee, Jung S. Lee, Jin S. Park, and Don-Hee Park. "Development of a Modified Three-Stage Methane Production Process Using Food Wastes." In Twenty-First Symposium on Biotechnology for Fuels and Chemicals, 731–41. Totowa, NJ: Humana Press, 2000. http://dx.doi.org/10.1007/978-1-4612-1392-5_56.

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Tan, Phit Ling, Shing Chiang Tan, Chee Peng Lim, and Swee Eng Khor. "A Modified Two-Stage SVM-RFE Model for Cancer Classification Using Microarray Data." In Neural Information Processing, 668–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24955-6_79.

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Yuan, Yixuan, Max Q. H. Meng, Wenjian Qin, and Lei Xing. "Liver Lesion Detection Based on Two-Stage Saliency Model with Modified Sparse Autoencoder." In Medical Image Computing and Computer Assisted Intervention − MICCAI 2017, 577–85. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66179-7_66.

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Schwartz, Jean-Claude D. "Total Single-Stage Autologous Breast Reconstruction with Free Nipple Grafts: A Modified Goldilocks Procedure." In Nipple-Areolar Complex Reconstruction, 379–87. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-60925-6_46.

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Olov, Nafise, Hamid Mirzadeh, and Shadab Bagheri_Khoulenjani. "Drug Release Modeling Through a 3-Stage Model on Hydrophobic Modified Carboxymethyl Chitosan Nanoparticles." In Eco-friendly and Smart Polymer Systems, 31–34. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45085-4_8.

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Srinivasababu, Nadendla. "Mechanical Performance of Nanoclay-Cellulose Fibre Particulate Composites Fabricated by Modified Two Stage Wet/Hand Layup Method." In Nanoclay Reinforced Polymer Composites, 239–61. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0950-1_10.

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Mu, Lan, Fahui Wang, and Sara McLafferty. "Analyzing Spatial Patterns of Late-Stage Breast Cancer in Chicago Region: A Modified Scale-Space Clustering Approach." In GeoJournal Library, 355–71. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-8572-6_18.

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Тези доповідей конференцій з теми "Modified stage"

Singhal, Chirag, Sameer Hasan, and M. F. Baig. "Modified Brayton Cycle for Turbofans." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2433.

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Abstract In the present study, a design point analysis of twin-spool turbofan engines is carried out, considering fuel injection of Aviation Turbine Fuel (ATF) in the initial stages of the compressor instead of combustor The two-phase compression brings about intercooling in the modified Brayton cycle, by injecting the atomized fuel directly in the initial stages of axial-flow compressor. The intercooling effect results in reduction of compressor work while reinforcing the enthalpy of combustion of fuel due to change of state of fuel from liquid to vapor state. This brings about an improvement in the thrust and thermal efficiency of the modified cycle. Effect of the intercooling is investigated for different performance parameters namely Fuel flow rate ṁf Total thrust Fs, Thermal efficiency ηth, Overall efficiency ηo and Modified cycle factor MCF over the varying compressor pressure ratio (CPR). Injecting the fuel in the 2nd stage of compression results in percentage increase of total thrust by 21.14%, MCF by 31.35%, ηo by 14.92% and decrease in Fuel flow rate ṁf by 7%. While injecting the fuel in the 5th stage of compression results in increased ηo by 17.54 %, MCF by 37.30%, total thrust by 5.68% and decrease in Fuel flow rate ṁf by 22% at a CPR = 30 and Turbine Inlet Temperature (TIT) = 1260K vis-à-vis conventional cycle. Injecting the fuel in latter stages of compressor brings about a decrease of total thrust as well as efficiency.

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Wang, Peinan, Zhiqiang Wang, and Qing Zhu. "Attitude Estimation Based on Modified Two-stage EKF." In 2017 2nd International Conference on Modelling, Simulation and Applied Mathematics (MSAM2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/msam-17.2017.30.

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Thanawastien, Suchai, and Pradip K. Srimani. "A class of modified single stage S/E networks." In the 1986 ACM fourteenth annual conference. New York, New York, USA: ACM Press, 1986. http://dx.doi.org/10.1145/324634.325228.

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Sun, Xiaofan, Maosheng Xiang, and Jinsong Chong. "A Modified Three-Stage Method for Polarimetric SAR Interferometry." In 2019 International Radar Conference (RADAR). IEEE, 2019. http://dx.doi.org/10.1109/radar41533.2019.171215.

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Banerjee, Rohan, and Aniruddha Sinha. "Two stage feature extraction using modified MFCC for honk detection." In 2012 International Conference on Communications, Devices and Intelligent Systems (CODIS). IEEE, 2012. http://dx.doi.org/10.1109/codis.2012.6422145.

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Schwärzle, A., T. O. Monz, A. Huber, and M. Aigner. "Detailed Examination of a Modified Two-Staged Micro Gas Turbine Combustor." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64477.

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Jet-stabilized combustion is a promising technology for fuel flexible, reliable, highly efficient combustion systems. The aim of this work is a reduction of NOx emissions of a previously published two-staged MGT combustor [1, 2], where the pilot stage of the combustor was identified as the main contributor to NOx emissions. The geometry optimization was carried out regarding the shape of the pilot dome and the interface between pilot and main stage in order to prevent the formation of high temperature recirculation zones. Both stages have been run separately to allow a detailed understanding of the flame stabilization within the combustor, its range of stable combustion, the interaction between both stages and the influence of the modified geometry. All experiments were conducted at atmospheric pressure and an air preheat temperature of 650 °C. The flame was analyzed in terms of shape, length and lift-off height, using OH* chemiluminescence images. Emission measurements for NOx, CO and UHC emissions were carried out. At a global air number of λ = 2, a fuel split variation was carried out from 0 (only pilot-stage) to 1 (only main stage). The modification of the geometry lead to a decrease in NOx and CO emissions throughout the fuel split variation in comparison with the previous design. Regarding CO emissions, the pilot stage operations is beneficial for a fuel split above 0.8. The local maximum in NOx emissions observed for the previous combustor design at a fuel split of 0.78 was not apparent for the modified design. NOx emissions were increasing, when the local air number of the pilot stage was below the global air number. In order to evaluate the influence of the modified design on the flow field and identify the origin of the emission reduction compared to the previous design, unsteady RANS simulations were carried out for both geometries at fuel splits of 0.93 and 0.78, respectively, using the DLR in-house code THETA with the k-w SST turbulence model and the DRM22 [3] detailed reaction mechanism. The numerical results showed a strong influence of the recirculation zones on the pilot stage reaction zone.

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Wang Hui-ying, Peng Rui, Wang Wen-bin, and Liu Xue-juan. "A modified inspection model based on a two-stage failure process." In TENCON 2015 - 2015 IEEE Region 10 Conference. IEEE, 2015. http://dx.doi.org/10.1109/tencon.2015.7372899.

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Tripathi, Satyendra, and Bharat Mishra. "Three stage 2-D discrete wavelet transform using modified vedic multiplier." In 2017 7th International Conference on Communication Systems and Network Technologies (CSNT). IEEE, 2017. http://dx.doi.org/10.1109/csnt.2017.8418535.

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Wu Libo, Zhao Zhengming, Liu Jianzheng, Liu Shu, and Yuan Liqiang. "Modified MPPT strategy applied in single-stage grid-connected photovoltaic system." In Proceedings of the Eighth International Conference on Electrical Machines and Systems. IEEE, 2005. http://dx.doi.org/10.1109/icems.2005.202702.

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Wei, Yutai, Zhijun Yang, and Youdun Bai. "Modified ADRC Design for Rigid-flexible Coupling Rotary Stage with Filters." In 2021 IEEE 10th Data Driven Control and Learning Systems Conference (DDCLS). IEEE, 2021. http://dx.doi.org/10.1109/ddcls52934.2021.9455364.

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Звіти організацій з теми "Modified stage"

Tarko, Andrew P., Mario Romero, Cristhian Lizarazo, and Paul Pineda. Statistical Analysis of Safety Improvements and Integration into Project Design Process. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317121.

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RoadHAT is a tool developed by the Center for Road Safety and implemented for the INDOT safety management practice to help identify both safety needs and relevant road improvements. This study has modified the tool to facilitate a quick and convenient comparison of various design alternatives in the preliminary design stage for scoping small and medium safety-improvement projects. The modified RoadHAT 4D incorporates a statistical estimation of the Crash Reduction Factors based on a before-and-after analysis of multiple treated and control sites with EB correction for the regression-to-mean effect. The new version also includes the updated Safety Performance Functions, revised average costs of crashes, and the comprehensive table of Crash Modification Factors—all updated to reflect current Indiana conditions. The documentation includes updated Guidelines for Roadway Safety Improvements. The improved tool will be implemented at a sequence of workshops for the final end users and preceded with a beta-testing phase involving a small group of INDOT engineers.

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Nelson-Cheeseman, B. B., R. V. Chopdekar, J. M. Iwata, M. F. Toney, E. Arenholz, and Y. Suzuki. Modified Magnetic Ground State in Nimn (2) O (4) Thin Films. Office of Scientific and Technical Information (OSTI), August 2012. http://dx.doi.org/10.2172/1049759.

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Cohen, Jerry D., and Ephraim Epstein. Metabolism of Auxins during Fruit Development and Ripening. United States Department of Agriculture, August 1995. http://dx.doi.org/10.32747/1995.7573064.bard.

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We had proposed to look at several aspects of auxin metabolism in fruit tissues: 1) IAA biosynthesis from tryptophan and IAA biosynthesis via the non-tryptophan pathway; 2) changes in the capacity to form conjugates and catabolites of auxin at different times during fruit development and; 3) the effects of modifying auxin metabolism in fruit tissues. The latter work focused primarily on the maize iaglu gene, with initial studies also using a bacterial gene for hydrolysis of IAA-aspartate. These metabolic and molecular studies were necessary to define potential benefits of auxin metabolism modification and will direct future efforts for crop improvement by genetic methods. An in vitro system was developed for the production of tomato fruit in culture starting from immature flowers in order to ascertain the effect of auxin modification on fruit ripening. IAA supplied to the fruit culture media prior to breaker stage resulted in an increase in the time period between breaker and red-ripe stages from 7 days without additional IAA to 12 days when 10-5 M IAA was added. These results suggest that significant changes in the ripening period could be obtained by alteration of auxin relationships in tomato fruit. We generated transgenic tomato plants that express either the maize iaglu gene or reduced levels of the gene that encodes the enzyme IAA-glucose synthetase. A modified shuttle vector pBI 121 expressing the maize iaglu gene in both sense and antisense orientations under a 35S promoter was used for the study. The sense plants showed total lack of root initiation and development. The antisense transgenic plants, on the other hand, had unusually well developed root systems at early stages in development. Analysis showed that the amount and activity of the endogenous 75 kDa IAGLU protein was reduced in these plants and consequently these plants had reduced levels of IAA-glucose and lower overall esterified IAA.

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Yang, Z. J. Levitation force on a permanent magnet over a superconducting plane: Modified critical-state model. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/510396.

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Gottlieb, Yuval, Bradley Mullens, and Richard Stouthamer. investigation of the role of bacterial symbionts in regulating the biology and vector competence of Culicoides vectors of animal viruses. United States Department of Agriculture, June 2015. http://dx.doi.org/10.32747/2015.7699865.bard.

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Symbiotic bacteria have been shown to influence host reproduction and defense against biotic and abiotic stressors, and this relates to possible development of a symbiont-based control strategy. This project was based on the hypothesis that symbionts have a significant impact on Culicoides fitness and vector competence for animal viruses. The original objectives in our proposal were: 1. Molecular identification and localization of the newly-discovered symbiotic bacteria within C. imicola and C. schultzei in Israel and C. sonorensis in California. 2. Determination of the prevalence of symbiotic bacteria within different vector Culicoides populations. 3. Documentation of specific symbiont effects on vector reproduction and defense: 3a) test for cytoplasmic incompatibility in Cardinium-infected species; 3b) experimentally evaluate the role of the symbiont on infection or parasitism by key Culicoides natural enemies (iridescent virus and mermithid nematode). 4. Testing the role(s) of the symbionts in possible protection against infection of vector Culicoides by BTV. According to preliminary findings and difficulties in performing experimental procedures performed in other insect symbiosis systems where insect host cultures are easily maintained, we modified the last two objectives as follows: Obj. 3, we tested how symbionts affected general fitness of Israeli Culicoides species, and thoroughly described and evaluated the correlation between American Culicoides and their bacterial communities in the field. We also tried alternative methods to test symbiont-Culicoides interactions and launched studies to characterize low-temperature stress tolerances of the main US vector, which may be related to symbionts. Obj. 4, we tested the correlation between EHDV (instead of BTV) aquisition and Cardinium infection. Culicoides-bornearboviral diseases are emerging or re-emerging worldwide, causing direct and indirect economic losses as well as reduction in animal welfare. One novel strategy to reduce insects’ vectorial capacity is by manipulating specific symbionts to affect vector fitness or performance of the disease agent within. Little was known on the bacterial tenants occupying various Culicoides species, and thus, this project was initiated with the above aims. During this project, we were able to describe the symbiont Cardinium and whole bacterial communities in Israeli and American Culicoides species respectively. We showed that Cardinium infection prevalence is determined by land surface temperature, and this may be important to the larval stage. We also showed no patent significant effect of Cardinium on adult fitness parameters. We showed that the bacterial community in C. sonorensis varies significantly with the host’s developmental stage, but it varies little across multiple wastewater pond environments. This may indicate some specific biological interactions and allowed us to describe a “core microbiome” for C. sonorensis. The final set of analyses that include habitat sample is currently done, in order to separate the more intimately-associated bacteria from those inhabiting the gut contents or cuticle surface (which also could be important). We were also able to carefully study other biological aspects of Culicoides and were able to discriminate two species in C. schultzei group in Israel, and to investigate low temperature tolerances of C. sonorensis that may be related to symbionts. Scientific implications include the establishment of bacterial identification and interactions in Culicoides (our work is cited in other bacteria-Culicoides studies), the development molecular identification of C. schultzei group, and the detailed description of the microbiome of the immature and matched adult stages of C. sonorensis. Agricultural implications include understanding of intrinsic factors that govern Culicoides biology and population regulation, which may be relevant for vector control or reduction in pathogen transmission. Being able to precisely identify Culicoides species is central to understanding Culicoides borne disease epidemiology.

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Asiri, Fiasal, Jaya Tedla, and Kumar Gular. Modified constrained-induced movement therapy on upper extremity functions in post stroke survivors at various recovery stages and rehabilitation settings. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, October 2020. http://dx.doi.org/10.37766/inplasy2020.10.0007.

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Handa, Avtar K., Yuval Eshdat, Avichai Perl, Bruce A. Watkins, Doron Holland, and David Levy. Enhancing Quality Attributes of Potato and Tomato by Modifying and Controlling their Oxidative Stress Outcome. United States Department of Agriculture, May 2004. http://dx.doi.org/10.32747/2004.7586532.bard.

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General The final goal and overall objective of the current research has been to modify lipid hydroperoxidation in order to create desirable phenotypes in two important crops, potato and tomato, which normally are exposed to abiotic stress associated with such oxidation. The specific original objectives were: (i) the roles of lipoxygenase (LOX) and phospholipids hydroperoxide glutathione peroxidase (PHGPx) in regulating endogenous levels of lipid peroxidation in plant tissues; (ii) the effect of modified lipid peroxidation on fruit ripening, tuber quality, crop productivity and abiotic stress tolerance; (iii) the effect of simultaneous reduction of LOX and increase of PHGPx activities on fruit ripening and tuber quality; and (iv) the role of lipid peroxidation on expression of specific genes. We proposed to accomplish the research goal by genetic engineering of the metabolic activities of LOX and PHGPx using regulatable and tissue specific promoters, and study of the relationships between these two consecutive enzymes in the metabolism and catabolism of phospholipids hydroperoxides. USA Significant progress was made in accomplishing all objectives of proposed research. Due to inability to regenerate tomato plants after transforming with 35S-PHGPx chimeric gene construct, the role of low catalase induced oxidative stress instead of PHGPx was evaluated on agronomical performance of tomato plant and fruit quality attributes. Effects of polyamine, that protects DNA from oxidative stress, were also evaluated. The transgenic plants under expressing lipoxygenase (LOX-sup) were crossed with catalase antisense (CAT-anti) plants or polyamine over producing plants (SAM-over) and the lines homozygous for the two transgenes were selected. Agronomical performance of these line showed that low catalase induced oxidative stress negatively affected growth and development of tomato plants and resulted in a massive change in fruit gene expression. These effects of low catalase activity induced oxidative stress, including the massive shift in gene expression, were greatly overcome by the low lipoxygenase activity. Collectively results show that oxidative stress plays significant role in plant growth including the fruit growth. These results also for the first time indicated that a crosstalk between oxidative stress and lipoxygenase regulated processes determine the outcome during plant growth and development. Israel Regarding PHGPx, most of the study has concentrated on the first and the last specific objectives, since it became evident that plant transformation with this gene is not obvious. Following inability to achieve efficient transformation of potato and tomato using a variety of promoters, model plant systems (tobacco and potato cell cultures, tobacco calli and plantlets, and Arabidopsis) were used to establish the factors and to study the obstacles which prohibited the regeneration of plants carrying the genetic machinery for overproduction of PHGPx. Our results clearly demonstrate that while genetic transformation and over-expression of PHGPx occurs in pre-developmental tissue stage (cell culture, calli clusters) or in completed plant (Arabidopsis), it is likely that over-expression of this enzyme before tissue differentiation is leading to a halt of the regeneration process. To support this assumption, experiments, in which genetic engineering of a point-mutated PHGPx gene enable transformation and over-expression in plants of PhSPY modified in its catalytic site and thus inactive enzymatically, were successfully carried out. These combined results strongly suggest, that if in fact, like in animals and as we established in vitro, the plant PHGPx exhibits PH peroxidase activity, these peroxides are vital for the organisms developmental process.

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Barash, Itamar, and Robert E. Rhoads. Translational Mechanisms that Govern Milk Protein Levels and Composition. United States Department of Agriculture, November 2004. http://dx.doi.org/10.32747/2004.7586474.bard.

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Original objectives: The long term objective of the project is to achieve higher content of protein in the milk of ruminants by modulating the translational machinery in the mammary gland. The first specific aim of the BARD proposal was to characterize responsiveness of various experimental systems to combination of lactogenic hormones and amino acids with particular emphasis on discrimination between the control of total protein synthesis and milk protein synthesis. Based on the results, we planned to proceed by characterizing the stage of protein synthesis in which the stimulation by lactogenic hormones and amino acid occur and finally we proposed to identify which components of the translation machinery are modified. Background to the topic: Milk protein is the most valuable component in milk, both for direct human consumption and for manufacturing cheese and other protein-based products. Attempts to augment protein content by the traditional methods of genetic selection and improved nutritional regimes have failed. The proposal was based on recent results suggesting that the limiting factor for augmenting protein synthesis in the bovine mammary gland is the efficiency of converting amino acids to milk proteins. Major conclusions, solutions, achievements: Insulin and prolactin synergistically stimulate â-casein mRNA translation by cytoplasmatic polyadenylation. The interaction between insulin and prolactin was demonstrated two decades ago as crucial for milk-protein synthesis, but the molecular mechanisms involved were not elucidated. We found in differentiated CID 9 mouse mammary epithelial cells line that insulin and prolactin synergistically increases the rate of milk protein mRNA translation. We focused on â-casein, the major milk protein, and found that the increase in â-casein mRNA translation was reflected in a shift to larger polysomes, indicating an effect on translational initiation. Inhibitors of the PI3K, mTOR, and MAPK pathways blocked insulin-stimulated total protein and â-casein synthesis but not the synergistic stimulation. Conversely, cordycepin, a polyadenylation inhibitor, abolished synergistic stimulation of protein synthesis without affecting insulin-stimulated translation. The poly(A) tract of â-casein mRNA progressively increased over 30 min of treatment with insulin plus prolactin. The 3’-untranslated region of â-casein mRNA was found to contain a cytoplasmic polyadenylation element (CPE), and in reporter constructs, this was sufficient for the translational enhancement and mRNA-specific polyadenylation. Furthermore, insulin and prolactin stimulated phosphorylation of cytoplasmic polyadenylation element binding protein (CPEB) but did not increase cytoplasmic polyadenylation.

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Cameron, Arthur, Shimshon Ben-Yehoshua, and Rebecca Hernandez. Design and Function of Modified Atmosphere Packaging Systems for Fresh Produce: a Unified Approach for Optimizing Oxygen, Carbon Dioxide and Relative Humidity. United States Department of Agriculture, January 1996. http://dx.doi.org/10.32747/1996.7613019.bard.

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Oxygen uptake, CO2 production and respiratory quotient (RQ) of strawberry, raspberry and cherry were measured as functions of temperature and oxygen level. The effect of cultivar was studied in strawberry ('Honey' and 'Allstar'). The effect of harvest date was studied for raspberry. The lower O2 limit increased markedly with incraqsing temperature for all fruits studied. Red bell pepper O2 uptake was measured as a function of O2 at 20o C. Lowering the inpackage humidity using NaCl reduced decay of bell pepper sealed in low-density polyethylene packages when stored at 8o C. Analyses of a model developed for MA-packaged red bell pepper fruit demonstrated that when RQ was near one and when CO2 exceeded O2 permeability, transient CO2 levels increased to a maximum before dropping to steady-state levels. An isothermal model of O2, CO2 and water vapor exchange in MA packages was developed for red bell pepper and tested empirically. A comprehensive model was developed for small fruits that also incorporated water vapor and the effects of changing temperature. Variation in package O2 levels was measured and modeled as a function of variation in respiration and film permeability.

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Meir, Shimon, Michael Reid, Cai-Zhong Jiang, Amnon Lers, and Sonia Philosoph-Hadas. Molecular Studies of Postharvest Leaf and Flower Abscission. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7696523.bard.

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Original objectives: Understanding the regulation of abscission competence by exploring the nature and function of auxin-related gene expression changes in the leaf and pedicelAZs of tomato (as a model system), was the main goal of the previously submitted proposal. We proposed to achieve this goal by using microarray GeneChip analysis, to identify potential target genes for functional analysis by virus-induced gene silencing (VIGS). To increase the potential of accomplishing the objectives of the previously submitted proposal, we were asked by BARD to show feasibility for the use of these two modern techniques in our abscission system. Thus, the following new objectives were outlined for the one-year feasibility study: 1.to demonstrate the feasibility of the VIGS system in tomato to perform functional analysis of known abscission-related genes; 2. to demonstrate that by using microarray analysis we can identify target genes for further VIGS functional analysis. Background to the topic: It is a generally accepted model that auxin flux through the abscission zone (AZ) prevents organ abscission by rendering the AZ insensitive to ethylene. However, the molecular mechanisms responsible for acquisition of abscission competence and the way in which the auxin gradient modulates it are still unknown. Understanding this basic stage of the abscission process may provide us with future tools to control abscission for agricultural applications. Based on our previous study, performed to investigate the molecular changes occurring in leaf and stem AZs of MirabillisJalapaL., we have expanded our research to tomato, using genomic approaches that include modern techniques for gene discovery and functional gene characterization. In our one-year feasibility study, the US team has established a useful system for VIGS in tomato, using vectors based on the tobacco rattle virus (TRV), a Lcreporter gene for silencing (involved in regulation of anthocyanin biosynthesis), and the gene of interest. In parallel, the Israeli team has used the newly released Affymetrix Tomato GeneChip to measure gene expression in AZ and non-AZ tissues at various time points after flower removal, when increased sensitivity to ethylene is acquired prior to abscission (at 0-8 h), and during pedicelabscission (at 14 h). In addition, gene expression was measured in the pedicel AZ pretreated with the ethylene action inhibitor, 1-methylcyclopropene (1-MCP) before flower removal, to block any direct effects of ethylene. Major conclusions, solutions and achievements: 1) The feasibility study unequivocally established that VIGS is an ideal tool for testing the function of genes with putative roles in abscission; 2) The newly released Affymetrix Tomato GeneChip was found to be an excellent tool to identify AZ genes possibly involved in regulation and execution of abscission. The VIGS-based study allowed us to show that TAPG, a polygalacturonase specifically associated with the tomato AZ, is a key enzyme in the abscission process. Using the newly released Affymetrix Tomato GeneChip we have identified potential abscission regulatory genes as well as new AZ-specific genes, the expression of which was modified after flower removal. These include: members of the Aux/IAAgene family, ethylene signal transduction-related genes, early and late expressed transcription factors, genes which encode post-translational regulators whose expression was modified specifically in the AZ, and many additional novel AZ-specific genes which were previously not associated with abscission. This microarray analysis allowed us to select an initial set of target genes for further functional analysis by VIGS. Implications: Our success in achieving the two objectives of this feasibility study provides us with a solid basis for further research outlined in the original proposal. This will significantly increase the probability of success of a full 3-year project. Additionally, our feasibility study yielded highly innovative results, as they represent the first direct demonstration of the functional involvement of a TAPG in abscission, and the first microarray analysis of the abscission process. Using these approaches we could identify a large number of genes involved in abscission regulation, initiation and execution, and in auxin-ethylene cross-talk, which are of great importance, and could enable their potential functional analysis by VIGS.

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