Relevant bibliographies by topics / Syngamy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Syngamy'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Syngamy"

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Lawler, Celine, H. W. Gordon Baker, and David H. Edgar. "Relationships between timing of syngamy, female age and implantation potential in human invitro-fertilised oocytes." Reproduction, Fertility and Development 19, no. 3 (2007): 482. http://dx.doi.org/10.1071/rd06127.

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Although early developmental markers are frequently used to select embryos for transfer in human assisted reproduction, their value as independent predictors of outcome is often unclear. In this study, the value of using early syngamy and first cleavage as predictors of implantation potential of Day 2 embryos was investigated by examining their interrelationships with subsequent development, female age and implantation. Implantation rates were higher when syngamy occurred before 23–24 h post insemination even when all embryos analysed were transferred 42 h post insemination at the 4-cell stage (25.8 v. 11.9% for the later syngamy group; P < 0.01). Although there was a significant (r = 0.682; P < 0.001) relationship between earlier entry into syngamy and female age, earlier syngamy was still associated with a significantly higher implantation rate in Day 2 embryos with four blastomeres in women under 36 years of age (31.4 v. 15.4% for the later syngamy group; P < 0.05). The ability of timing of syngamy to predict implantation independent of other variables was confirmed by multiple logistic regression analysis. Although related to both subsequent embryo development and female age, early entry into syngamy is a predictor of implantation potential independent of both correlates in human Day 2 in vitro-fertilised embryos.
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O'Kelly, Charles J., David J. Garbary, and Gary L. Floyd. "Flagellar apparatus of male gametes and other aspects of gamete and zygote ultrastructure in Prasiola and Rosenvingiella (Chlorophyta, Prasiolales) from British Columbia." Canadian Journal of Botany 67, no. 2 (1989): 505–14. http://dx.doi.org/10.1139/b89-071.

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We examined gametes, syngamy, and zygote formation in Prasiola meridionalis Setchell & Gardner and Rosenvingiella constricta (S. & G.) Silva with the transmission electron microscope. We compare the structures we observed with those of the Atlantic species P. stipitata Suhr and describe some previously unreported features. The sperm possessed a number of unusual structural elements in the flagellar apparatus and elsewhere, in particular a 9 + 1 microtubule configuration in the flagellar axoneme. The flagellar apparatus exhibited 180° rotational symmetry and counterclockwise absolute orientation of major components. At syngamy, the flagellar apparatus changed little in composition and arrangement, suggesting that it has a minimal, if any, function in syngamy or the planozygote. Karyogamy occurred within a few hours of plasmogamy, after settlement of the planozygote and concurrently with wall formation. The three species, P. meridionalis, P. stipitata, and R. constricta, are very similar in gamete structure, which indicates that the genera Prasiola and Rosenvingiella are close relatives. The flagellar apparatus features provide evidence supporting recognition of the order Prasiolales, which may be assigned to either the class Ulvophyceae or the class Pleurastrophyceae.
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Anderson, A., K. Graff, J. Distefano, J. Whelan, and J. Crain. "Early Syngamy; A Case Study Report." Fertility and Sterility 84 (September 2005): S378—S379. http://dx.doi.org/10.1016/j.fertnstert.2005.07.991.

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Machatkova, M., J. Horakova, P. Hulinska, Z. Reckova, and K. Hanzalova. "Early oocyte penetration can predict the efficiency of bovine embryo production in vitro." Zygote 16, no. 3 (2008): 203–9. http://dx.doi.org/10.1017/s0967199408004784.

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SummaryThe aim of this work was to characterize oocyte fertilization and embryo cleavage in nine AI bulls to find parameters suitable for prediction of in vitro fertility. According to the d8 blastocysts rate, they were categorized as high, medium and low productive (HP, MP and LP, mean: 25.4, 21.0 and 13.6% respectively) bulls. For these categories, oocyte penetration and fertilization efficiency were assessed at 6 and 18 hours post insemination (hpi), respectively. Some presumptive zygotes were cultured and cleaved and fast-cleaved embryo rates were checked at 44 hpi. The penetration rate was significantly higher for HP bulls than for MP and LP bulls (67.9 versus 50.3 and 33.1%; p < 0.01). The syngamy rate was significantly higher for HP bulls than for MP and LP bulls (21.4 versus 10.2 and 5.7%; p < 0.05). Conversely, no significant differences in fertilization rates were found among HP, MP and LP bulls. The cleavage rate was significantly higher for HP than LP bulls (82.4 versus 74.4%; p < 0.01). The fast cleavage rate was significantly higher for both HP and MP bulls, as compared with LP bulls (82.1 and 84.7 versus 73.5%; p < 0.01). A strong correlation was found between blastocyst production and penetration (r = 0.803), syngamy (r = 0.826), cleavage (r = 0.635) and fast cleavage (r = 0.709). In conclusion, all the evaluated parameters showed a predictive value, the most significant being early penetration and syngamy.
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Shah, Trina, Catarina Moreira, Nick Macklon, Ahuja Kamal, and Wang Jinjun. "The impact of asynchronous syngamy on IVF outcome." Reproductive BioMedicine Online 37 (May 2018): e10-e11. http://dx.doi.org/10.1016/j.rbmo.2018.04.016.

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García-Rodríguez, Anaís, Jaime Gosálvez, Ashok Agarwal, Rosa Roy, and Stephen Johnston. "DNA Damage and Repair in Human Reproductive Cells." International Journal of Molecular Sciences 20, no. 1 (2018): 31. http://dx.doi.org/10.3390/ijms20010031.

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The fundamental underlying paradigm of sexual reproduction is the production of male and female gametes of sufficient genetic difference and quality that, following syngamy, they result in embryos with genomic potential to allow for future adaptive change and the ability to respond to selective pressure. The fusion of dissimilar gametes resulting in the formation of a normal and viable embryo is known as anisogamy, and is concomitant with precise structural, physiological, and molecular control of gamete function for species survival. However, along the reproductive life cycle of all organisms, both male and female gametes can be exposed to an array of “stressors” that may adversely affect the composition and biological integrity of their proteins, lipids and nucleic acids, that may consequently compromise their capacity to produce normal embryos. The aim of this review is to highlight gamete genome organization, differences in the chronology of gamete production between the male and female, the inherent DNA protective mechanisms in these reproductive cells, the aetiology of DNA damage in germ cells, and the remarkable DNA repair mechanisms, pre- and post-syngamy, that function to maintain genome integrity.
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Buckle, Stephen, Karen Dawson, and Peter Singer. "The Syngamy Debate: When Precisely Does a Human Life Begin?" Law, Medicine and Health Care 17, no. 2 (1989): 174–81. http://dx.doi.org/10.1111/j.1748-720x.1989.tb01089.x.

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Albertini, David F. "Making sense out of syngamy at the onset of mammalian development." Journal of Assisted Reproduction and Genetics 35, no. 8 (2018): 1357–58. http://dx.doi.org/10.1007/s10815-018-1282-6.

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Hertzler, Philip L., and Wallis H. Clark. "The late events of fertilisation in the penaeoidean shrimp Sicyonia ingentis." Zygote 1, no. 4 (1993): 287–96. http://dx.doi.org/10.1017/s0967199400001611.

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SummaryAntibodies to sea urchin β-tubulin and mammalian heavy neurofilaments were to used the late events of fertilisation in the penaeoidean shrimp Sicyonia ingentis. The neurofilament antibody fortuitously stained centrosomes in eggs, as well as the subacrosomal region and acrosomal filament in sperm. The neurofilament antibody also stained a cortial site in eggs which was associated with the positioning of the mitotic spindle. During pronuclear migration, a large maternal microtubule during syngamy, while the sperm centrosomes formed the poles of the first mitotic spindle. Colcemid treatment modulated the size of the mitotic spindle and blocked pronuclear migration.
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Sato, Motoaki, and Hikaru Tanaka-Sato. "Fertilization, syngamy, and early embryonic development in the cricketGryllus bimaculatus (de geer)." Journal of Morphology 254, no. 3 (2002): 266–71. http://dx.doi.org/10.1002/jmor.10033.

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Dissertations / Theses on the topic "Syngamy"

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Mathias, Frank Furlong Jr. "A Plio-Pleistocene Record of Lacustrine Ostracodes from Butte Valley, California: Faunal Responses to Tectonic and Climatic Change." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1404725598.

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Mizen, Lindsay Anne MacTaggart. "Characteristics of cellular and synaptic function in rodent forebrain neurons with altered SynGAP expression." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28968.

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Intellectual disability (ID) and autism spectrum disorders (ASDs) can have a devastating impact on an individual’s functioning and quality of life. Insights from pre-clinical models of monogenic forms of ID and ASD are now revealing the biochemical pathways and aberrations in cellular and synaptic functioning involved. One monogenic cause of ID, ASD and epilepsy is SYNGAP1 ID which results from mutations in the SYNGAP1 gene on human chromosome 6. Although a variety of symptoms have been reported, many affected individuals have moderate to severe intellectual impairment and severe seizure phenotypes. Previous pre-clinical studies have mainly focussed on the effects of altered SynGAP expression in mice. This thesis is therefore the first to explore altered SynGAP expression in a rat model. It also adds to the body of research exploring the roles of SynGAP isoforms in glutamatergic synaptic function. The SynGAP_GAP deletion rat was engineered to have a deletion encompassing the enzymatically active GTPase activating protein (GAP) domain of the protein, via which SynGAP regulates multiple biochemical pathways by enhancing the slow intrinsic hydrolysis of GTP by GTP-binding proteins. SyngapGAP/GAP rats appeared small and failed to thrive. As with Syngap-/- mice, this complete loss of WT SynGAP proved lethal, whereas Syngap+/GAP rats appeared to develop normally. The electrophysiological data obtained from this new model reveals a reduction in the frequency of miniature excitatory post-synaptic currents (mEPSCs) in Syngap+/GAP cultured neurons. However the exaggerated hippocampal long-term depression identified in Syngap+/- mice was not seen in the rats. There was also no evidence of differences in intrinsic cell properties, excitatory and inhibitory currents or ratios of AMPAR / GABAAR and AMPAR / NMDAR between WT and heterozygous rats. In addition to the characterisation of the SynGAP_GAP deletion rat, the impact of the previously unstudied Eα1 isoform on forebrain neuronal synaptic function was examined through mEPSC recordings. A trend towards lower mEPSC frequency was found which supports previous research showing that α1 isoforms reduce synaptic strength. This body of work therefore adds to published evidence of isoform specific functions and provides the first evidence of the impact of SynGAP alterations in rats, the results of which show some intriguing differences from previous work in mice.
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Barbera, Davide <1984&gt. "Innovative processes for syngas production." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5835/.

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The research of new advanced processes for syngas production is a part of a European project for the production of a new Gas to Liquid Process (NextGTL). The crucial points in the production of GTL process are the energy required for the air separation used in autothermal reforming or the heat required for steam reforming and the efficiency in carbon utilization. Therefore a new multistep oxy-reforming process scheme was developed at lower temperature with intermediate H2 membrane separation to improve the crucial parameter. The process is characterized by a S/C of 0.7 and O2/C of 0.21 having a smoothed temperature profile in which kinetic regime is easily obtained. Active catalysts for low temperature oxy-reforming process have been studied working at low pressure to discriminate among the catalyst and at high pressure to prove it on industrial condition. It allows the selection of the Rh as active phase among single and bimetallic VIII group metal. The study of the matrix composition and thermal treatment has been carried out on Rh-Mg/Al hydrotalcite selected as reference catalyst. The research to optimize the catalyst lead to enhanced performances through the identification of a limitation of the Rh reduction from the oxides matrix as key point to increase the Rh performances. The Rh loading have been studied to allow the catalyst scale up for pilot process in Chieti in a shape of Rh-HT on honeycomb ceramic material. The developed catalyst has enhanced methane conversion in a inch diameter monolith reactor if compared with the semi-industrial catalyst chosen in the project as the best reference.
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Ephraim, Augustina. "Valorization of wood and plastic waste by pyro-gasification and syngas cleaning." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2016. http://www.theses.fr/2016EMAC0019/document.

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Les déchets de bois et de plastiques sont des ressources prometteuses pour la production du gaz de synthèse (syngaz) par la pyro-gazéification grâce à leurs disponibilités et leurs caractéristiques énergétiques. Cependant, le syngaz issu de ces déchets peut contenir des teneurs élevées en chlorure d’hydrogène (HCl) qui est corrosif et toxique et qui doit donc être éliminé. Premièrement, les expériences de pyrolyse des mélanges de bois de peuplier et de plastiques ont mis en évidence l’influence des plastiques sur les produits obtenus. En effet, le HDPE et PS augmentent respectivement le pouvoir calorifique du syngaz et le rendement en huiles, tandis que le PVC augmente le rendement en char et le HCl dans le syngaz. Ensuite, les expériences de pyro-gazéification à l’échelle pilote ont montré que l’ajout de 1 % en masse de PVC dans un déchet de bois augmente la teneur en goudrons et HCl dans le syngaz par un facteur respectivement de 2 et 5,5, tandis que la concentration de chlore dans le char résiduel est 16 fois plus élevée. En parallèle, un model CFD a été développé pour simuler la pyro-gazéification du déchet de bois en couplant les phénomènes d’écoulement de fluides, transfert de masse et de chaleur, et les réactions chimiques. Ce modèle se compose des sous-modèles de séchage, pyrolyse, oxydation et gazéification du char. Les résultats de simulation sont en bon accord avec les données expérimentales obtenues par des expériences dans un gazéifieur à l’échelle pilote. En outre, les analyses de sensibilités du sous-modèle de la gazéification de char ont été réalisées. Finalement, une étude expérimentale a été conduite sur le traitement de HCl dans le syngaz. L’étude se concentre sur la valorisation de deux résidus solides industriels issus de la production de bicarbonate et carbonate de sodium. Leurs réactivités sont comparées avec celles de deux adsorbants commerciaux, NaHCO3 et Ca(OH)2. L’effet de la matrice gazeuse sur la performance des adsorbants est également examiné. Les résidus industriels ont un potentiel intéressant par rapport aux adsorbants commerciaux. Les résultats obtenus montrent des nouvelles approches pour la purification du syngaz généré par la gazéification des déchets de bois et de plastiques<br>Wood and plastic waste are interesting feedstock for the production of syngas via pyro- gasification, mainly due to their abundant supply and good fuel properties. However, syngas derived from waste may contain significant amounts of hydrogen chloride (HCl), which is corrosive and toxic and must therefore be removed. In this work, co-pyrolysis experiments were first conducted in order to study the influence of mixing different plastics with wood samples on the pyrolysis products. It was found that HDPE and PS significantly increase the heating value and HCl content of the gas product respectively, while PVC increases the yield of char and HCl. Next, pilot-scale experiments were performed, which revealed that adding 1 wt% PVC to wood waste raises the content of tar and HCl in syngas by factors of 2 and 5,5 respectively, and also elevates the chlorine concentration in the char residue 16 time over the value obtained in the absence of PVC. In parallel, a CFD model was developed to simulate the pyro-gasification of wood waste by coupling fluid flow, heat and mass transfer, and chemical reactions. This model consists of drying, pyrolysis, oxidation and char gasification sub-models. The simulation results were in good agreement with experimental data obtained from the pilot-scale experiments. Furthermore, sensibility analyses on the char gasification sub-model were performed. Finally, an experimental study was conducted on the removal of HCl from syngas. The study focused on valorizing two industrial solid wastes generated from the process of sodium carbonate and sodium bicarbonate manufacture. Their HCl adsorption performance were compared to those of the commercial sorbents, NaHCO3 et Ca(OH)2. Moreover, the effect of gas matrix on their performance was studied. The industrial wastes showed potential for treating acid gas as compared to the commercial sorbents used. This opens up new approaches to the purification of syngas generated by the pyro-gasification of wood and plastic waste
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Calisan, Atalay. "Syngas Production Over Reducible Metal Oxides." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615586/index.pdf.

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The scope of this thesis was to study thermodynamics of lead oxide and cobalt oxide as the chemical looping agent for oxygen. Furthermore, the theoretical results were verified experimentally. Ellingham diagrams were constructed for the selected oxides. Then, detailed thermodynamic analysis was conducted for stability analysis at different temperatures and pressures. Equilibrium product compositions for various reactions involving these oxides were calculated via Gibbs free energy minimization analysis. Finally, it was shown that cobalt, lead and their oxide forms can be used for syngas production. In the experimental part PbOx, CoOx, Pt-doped CoOx and Pt-doped cobalt alumina, and mixed lead cobalt oxides were synthesized. In addition, technical grade cobalt oxide and lead rods were also used. XRD analysis indicated that Co3O4, Pb2O3 and &alpha<br>-PbO were the main crystal structures. Oxygen evolution from mixed oxides was monitored by TPD in a home built system. Re-oxidation of the reduced metals was successfully conducted using CO2 and H2O as oxidizing agents. Oxygen TPD studies indicated that oxygen evolution rates and amounts were higher and started at lower temperatures when two oxides were together. These observations were consistent with the predictions obtained from thermodynamics. In a series packed bed reactor, evolved oxygen from the mixed oxides were used to react with coal packed upstream of the oxides. It was found that coal oxidation can be achieved around 400oC and 600oC by using Pb/Co=3 (wt./wt.) looping media with almost no CO2 formation. It was also found that desired product selectivity (CO) can be increased by controlling reactive agent (O2) concentration in reaction environment.
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Yin, Xiuli. "Synthesizing methanol from biomass derived syngas." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31456844.

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Yin, Xiuli, and 陰秀麗. "Synthesizing methanol from biomass derived syngas." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31456844.

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Arce, Andrea S. B. Massachusetts Institute of Technology. "Syngas production using a catalytic engine." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98949.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 39).<br>There are many industrial processes, such as shale hydraulic fracturing, where small throughput of natural gas is considered a low-value waste or, at best, a nuisance. The natural gas is remote from potential users or from pipelines, making it too expensive to transport to market. As a consequence, it is simply burned (flared) to form carbon dioxide to dampen its environmental impact (i.e. methane has a higher global warming potential than carbon dioxide). At the Sloan Automotive Laboratory, we have been investigating new processes to convert methane into a valuable liquid fuel product in a compact unit that could avoid the need for flaring, and to do so in an economical way. The processes use internal combustion engines as a chemical reformer to convert natural gas to syngas by means of fuel-rich, incomplete combustion. This thesis project parallels a project that uses homogeneous reforming in-cylinder without a catalyst, with air or oxygen-enriched air (partial oxidation). This experiment explores the use and effects of a catalyst deposited on metallic foams placed in a one-cylinder compression-ignition engine, operating either in partial oxidation mode in combination with dry reforming. The metallic foam is attached to the bowl in the piston to carry out the chemical reaction. We determine composition of the reformate to determine conversion and selectivity. The product composition is determined with a gas chromatography. The metal foam catalyst is an effective means of syngas generation. We explore the impact of changing parameters such as equivalence ratio, CO2 content, and intake temperature and pressure.<br>by Andrea Arce.<br>S.B.
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Tong, Andrew S. "Application of the Moving-Bed Syngas Chemical Looping Process for High Syngas and Methane Conversion and Hydrogen Generation." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1390774129.

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Bunkute, Birute. "Burning Velocities of Coal-derived Syngas Mixtures." Thesis, Cranfield University, 2008. http://hdl.handle.net/1826/3135.

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Summary Integrated gasification combined cycle (IGCC) systems, which utilize coal, petroleum coke, heavy oil, biomass and waste materials as a feedstock, continue to enter the power generation market. The gasification products from gasifiers using these feedstocks are mixtures of hydrogen, carbon monoxide and inerts like nitrogen, carbon dioxide and water. These mixtures are then used as a fuel in low-emission power generation applications. Unlike natural gas or methane, which has been widely used and researched for many years, these mixtures have not been widely investigated. Thus the aim of this study is to provide data on the combustion properties of syngas mixtures, mainly focusing on laminar burning velocities and critical strain rates to extinction. These combustion properties data are essential for gas turbine combustor modelling using turbulent burning velocity closure models. The establishment of such a database in this study mainly relies on numerical computations. Therefore, the experimental campaign was limited to investigation of several CO/H2/N2 fuel mixtures fuel mixtures at different equivalence ratios and operating conditions. The laminar burning velocity values, obtained from the experimental campaign were used mainly for validation of the chemical kinetics model and reaction mechanism. The principal outcome from this study is that at ambient conditions and reactant preheat temperatures up to 400K experimental laminar burning velocity values compare well with numerical predictions. The laminar burning velocity tests at high pressure presented a number of complications due to the formation of cellular flames and the flow in theburner tube entering the transitional laminar to turbulent regime. As a result the numerical model could not be fully validated experimentally for high pressure conditions. A comprehensive combustion properties database has been created using numerical simulations, based on comprehensive descriptions of the chemical kinetics and extensions using neural networks. CFD simulations of reacting flows in a practical combustor geometry demonstrated the importance of obtaining accurate laminar burning velocities and critical strain rates to extinction data.
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Books on the topic "Syngamy"

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Rhee, Syngman. The Syngman Rhee telegrams. JoongAng Ilbo, 2000.

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Puigjaner, Luis, ed. Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8.

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Syngas from waste: Emerging technologies. Springer, 2011.

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'Tokpu' Yi Sŭng-man p'yŏngjŏn: Kwŏllyŏk ŭi hwasin, tu ŏlgul ŭi kihoejuŭija. Ch'aekpose, 2012.

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Indarto, Antonius. Syngas: Production, applications, and environmental impact. Nova Science Publishers, 2011.

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Chŏsŏ rŭl t'onghae pon Yi Sŭng-man ŭi chŏngch'i sasang kwa hyŏnsil insik. Yŏnse Taehakkyo Ch'ulp'anbu, 2011.

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Rhee, Syngman. The Syngman Rhee correspondence in English, 1904-1948. Sŏnin, 2009.

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Yŏng-ik, Yu, and Yŏnse Taehakkyo. Hyŏndae Hanʼgukhak Yŏnʼguso, eds. The Syngman Rhee correspondence in English, 1904-1948. Sŏnin, 2009.

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Rhee, Syngman. The Syngman Rhee correspondence in English, 1904-1948. Sŏnin, 2009.

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Kurucz, Adorjan. Syngas production methods, post treatment, and economics. Nova Science Publishers, 2009.

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Book chapters on the topic "Syngamy"

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Ephraim, Augustina, Rajesh Munirathinam, Ange Nzihou, Doan Pham Minh, and Yohan Richardson. "Syngas." In Handbook on Characterization of Biomass, Biowaste and Related By-products. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-35020-8_11.

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Mehlhorn, Heinz. "Syngamus Species." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_3902.

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Mehlhorn, Heinz. "Syngamus Species." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_3902-1.

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De Tissera, Sashini, Michael Köpke, Sean D. Simpson, Christopher Humphreys, Nigel P. Minton, and Peter Dürre. "Syngas Biorefinery and Syngas Utilization." In Advances in Biochemical Engineering/Biotechnology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/10_2017_5.

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Donato, Antonello Di. "H2 Production and CO2 Separation." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_7.

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Puigjaner, Luis. "Introduction." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_1.

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Pérez-Fortes, Mar, and Aarón D. Bojarski. "Global Clean Gas Process Synthesis and Optimisation." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_10.

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Bojarski, Aarón D., and Mar Pérez-Fortes. "Selection of Best Designs for Specific Applications." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_11.

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Coca, Pilar, Mar Pérez-Fortes, and Aarón D. Bojarski. "Examples of Industrial Applications." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_12.

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Bojarski, Aarón D., Carlos Rodrigo Alvarez Medina, Mar Pérez–Fortes, and Pilar Coca. "Industrial Data Collection." In Syngas from Waste. Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-540-8_13.

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Conference papers on the topic "Syngamy"

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Al-Mulla, Jassem. "Syngas Technologies." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2014. http://dx.doi.org/10.2523/iptc-17416-ms.

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Al-Mulla, Jassem. "Syngas Technologies." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2014. http://dx.doi.org/10.2523/17416-ms.

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Al-Mulla, J. "Syngas Technologies." In IPTC 2014: International Petroleum Technology Conference. European Association of Geoscientists & Engineers, 2014. http://dx.doi.org/10.3997/2214-4609-pdb.395.iptc-17416-ms.

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Tóth, Lukáš, Marián Lázár, and Tomáš Brestovič. "Possibilities of syngas recovery." In 38TH MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMODYNAMICS. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5114773.

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Zhang, Bo, Ye Qin, Shaoping Shi, et al. "Computational Fluid Dynamics Simulation of Syngas Nozzle of Gas Turbine for Syngas." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90272.

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Abstract Integrated Gasification Combined Cycle (IGCC) is a technology that integrates the coal gasification and combined cycle to produce electricity efficiently. Due to the fact that the heating value of syngas from coal gasification process is typically lower than that of the natural gas, the conventional gas turbine will have to be adapted for syngas. The nozzle adjustment is the key to the successful transformation since the ignition properties are different between syngas and natural gas which have totally different compositions. The nozzles suitable for natural gas have been prone to partially melting around the flame stabilization holes on sidewalls of the nozzle in real operation. Thus a computational fluid dynamics (CFD) model was constructed for the syngas nozzles as well as combustion chamber of the gas turbine for low heating value syngas to study the thermostability of the nozzle. The detailed structure of the syngas nozzle, the combustion characteristics of syngas, as well as the actual operation condition of the gas turbine were all employed in the CFD model to improve the simulation accuracy. The reason of partially melting of the nozzles suitable for natural gas can be attributed to that the syngas leaked from the flame stabilization holes into the mainstream air can quickly mix with air, adhere to the sidewalls of the nozzles and then ignite around the holes which result in temperatures high enough to melt the material of the nozzle around the holes through CFD simulation. Finally, a new structure of the syngas nozzle was proposed and validated by CFD simulations. The simulation result shows that the flames caused by the syngas leaked from the flame stabilization holes are no longer adhering to the nozzle sidewalls and local high temperature can be lowered by about 30% which will not be able to melt the nozzle material.
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Dam, Bidhan, and Ahsan Choudhuri. "Flashback Propensity of Syngas Fuels." In ASME 2009 Power Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/power2009-81011.

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The paper presents experimental measurements of flashback propensity of H2-CO mixtures (primary constituents of syngas fuels). Effects of H2 concentration, external excitation and swirl on the flashback propensity of H2-CO flames are discussed. The flashback behavior of H2-CO flames changes nonlinearly with the increase in H2 contents in the mixture. The critical velocity gradient (gF) values of 5%–95% and 15%–85% H2-CO mixtures somewhat agree with the scaling relation (gF = c(SL2/α)) and yield an average c value of 0.035. However, the gF values of 25%–75% H2-CO mixture show higher order variations with the SL2/α ratio (especially for SL2/α &amp;lt; 19,000 s−1). At a lower SL2/α ratio, burner diameters have small effects on critical velocity gradient measurements; however, the effect is significant at higher SL2/α ratio. The effect of external excitation on the flashback propensity of H2-CO flames with more than 5% H2 is not significant. Flashback through two mechanisms and their dependence on combustor parameters were also identified for swirl stabilized H2-CO flames.
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Gorski, Jan, Wajid Ali Chishty, and Matthew Johnson. "Flame Response Analysis of Syngas." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25409.

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The motivation for the work comes from the requirement to assess the feasibility of using alternative fuels in lean-premixed land-based stationary gas turbine combustion systems. Lean-premixed systems are prone to combustion instability issues and the need is to determine how the use of alternative fuels would affect such instabilities. The paper presents the results of an acoustically-forced laminar flat flame study that was conducted to measure the influence of flow velocity oscillations on the response of syngas flames under various operating conditions and in comparison to natural gas flames. The results indicate that syngas concentration in a methane-syngas-air mixture significantly affects the flame response. On the other hand, the ratio of hydrogen-to-carbon monoxide in the syngas was found to have a negligible effect on the flame response for a fuel blend made up of 50% methane and 50% syngas. Flame liftoff distance and flame speed were found to be important parameters that govern the flame transfer function magnitude and resonant frequency for a thermally stabilized flat flame. The paper also presents insights into flame transfer function scaling based on a refined Strouhal definition.
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Zhang, Xiaodong, Min Xu, Li Sun, Rongfeng Sun, Feipeng Cai, and Dongyan Guo. "Biomass Gasification for Syngas Production." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90591.

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For the concern with environment protection and energy security, much attention has been paid to alternative fuels from renewable resources in modern times, among which liquid fuel production from biomass gasification has aroused much enthuasitics. One two-stage gasification technology is proposed to promote the produciton of syngas suitable for F-T synthesis. The novel technology combines moving-bed pyrolysis, the secondary reinforcement decomposition, and reduction of pyrolysis intermediates. With the addition of certain amount of oxygen in the reaction scheme, large portion of large molecular hydrocarbons and some methane in the pyrolysis gas are reformed into hydrogen and carbon monoxide, and downstream reduction process also helps the mitigation of carbon dioxide emission. The secondary gasification stage proves to be effective in adjusting the product syngas composition to accommodate the requirment of the succeeding synthesis process. From preliminary test on pilot scale experimental facility, syngas with about the same content of hydrogen and carbon monoxide was achieved, with little content of tar. With water gas shift reaction, hydrogen content can be further increased to above 45 percent, resulting suitable H2/CO for downstream synthesis process.
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Som, Sibendu, Anita I. Ramirez, and Suresh Aggarwal. "Emission Characteristics of Syngas Flames." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14553.

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Synthesis gas or "Syngas" is being recognized as a viable energy source worldwide, particularly for stationary power generation due to its wide flexibility in fuel sources and superior pollutants characteristics. Although its composition may vary significantly, it generally contains CO and H2 as the dominant fuel components with varying amount of methane and diluents. There are, however, gaps in the fundamental understanding of syngas combustion and emissions, as most previous research has focused on flames burning individual fuel components such as H2 and CH4, rather than syngas mixtures. To ensure the environmental feasibility of syngas, the harmful emission, especially NOx, must comply with current and future regulations. In addition, the combustion of syngas occurs at elevated pressures and inlet temperatures. Most published research has considered the combustion of syngas constituents at atmospheric conditions. This paper presents a numerical investigation to gain fundamental understanding of combustion and emission characteristics of syngas with varying composition, pressure and inlet temperatures. Two representative syngas fuel mixtures, 50% H2/50% CO and 5% H2 / 95% CO (% vol.), are chosen based on fuel composition data from multiple power generation plants worldwide. Three detailed chemical kinetic models are used namely, GRI 3.0, Davis and Dryer mechanisms. Results indicate that for both representative mixtures an increase in reactant temperature leads to a significant increase in NOx due to increase in flame temperature caused by an increase in inlet temperature. As the pressure is increased from 1 to 6 atm, the peak NO increases rapidly, and then becomes nearly independent of pressure. This can be attributed to a similar trend in radical species responsible for NO production such as HCN and OH which both show the most significant increase at low pressures. The emission index for these flames is also found to follow a similar behavior with pressure.
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Bonzani, Federico. "Syngas Burner Optimization for Fuelling a Heavy Duty Gas Turbine With Various Syngas Blends." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90761.

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The IGCC power plant of Ferrera Erbognone will be the first real commercial power plant in Italy to be operated without taking into account the high benefits once available according to the national law (CIP6/1992) specifically dealing with recovery fuel usage alternative to natural gas. The syngas will be provided by the nearby refinery using tar as main feedstock. Furthermore, according to the demands of the refinery it will be possible in the gasifier island to separate hydrogen in variable quantity from the syngas thus giving a high variability composition as output fuel. Also, if the maximum quantity of hydrogen will be separated, an integration with natural gas will be performed in order to get the maximum power output of the power plant. As a consequence, the syngas burner has been designed taking into account all the fuel characteristics depending on the different composition carried out. According to these, the burner has been optimised in order to fit the various syngas blends to be fuelled when running the engine. In order to verify the modifications carried out the burner has been tested both at atmospheric and full engine conditions since the NOx requirements for this project are the more stringent experienced with respect to the past projects (NOx to be below 25 ppm). During these test the main aspect to be in investigated have been: a) Minimum load when feeding the gas turbine with syngas. b) NOx emission from 60% load up to base load. c) Change over from natural gas to syngas and vice versa. The tests have been performed successfully: commissioning on site will start on November 2005. The paper describe the design and the testing phase highlighting the main features of the burner and the fuel system with respect to the plant requirements.
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Reports on the topic "Syngamy"

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Robert J. Copeland, Yevgenia Gershanovich, and Brian Windecker. HIGH EFFICIENCY SYNGAS GENERATION. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/840258.

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Lebarbier Dagel, Vanessa, J. Li, Charles Taylor, et al. Task 3.3: Warm Syngas Cleanup and Catalytic Processes for Syngas Conversion to Fuels Subtask 3: Advanced Syngas Conversion to Fuels. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1136615.

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Galuszka, J. Methane to syngas in staged membrane reactor. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/304633.

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Olson, E. S., and R. K. Sharma. Task 4.9 -- Value-added products from syngas. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/671849.

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Bockelie, Michael J. Mitigation of Syngas Cooler Plugging and Fouling. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1234451.

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Jang, B. W. L., J. J. Spivey, M. R. Gogate, J. R. Zoeller, R. D. Colberg, and G. N. Choi. SYNTHESIS OF METHACRYLATES FROM COAL-DERIVED SYNGAS. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/774948.

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Talmadge, M., Mary J. Biddy, Abhijit Dutta, Susanne B. Jones, and Pimphan A. Meyer. Syngas Upgrading to Hydrocarbon Fuels Technology Pathway. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1073587.

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Talmadge, M., M. Biddy, A. Dutta, S. Jones, and A. Meyer. Syngas Upgrading to Hydrocarbon Fuels Technology Pathway. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1076664.

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Horazak, Dennis. Zero Emissions Coal Syngas Oxygen Turbo Machinery. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1051564.

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E.T., James P. Meagher, Prasad Apte, et al. Development of OTM Syngas Process and Testing of Syngas Derived Ultra-clean Fuels in Diesel Engines and Fuel Cells. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/893602.

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