Log in

Relevant bibliographies by topics / GEA Group

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'GEA Group'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'GEA Group.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "GEA Group"

1

Hüllmann, Ulrich, and Andreas Hoffjan. "Controlling in der GEA Group." Controlling 21, no. 7 (2009): 409–11. http://dx.doi.org/10.15358/0935-0381-2009-7-409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Schlienkamp, Christoph. "GEA Group AG — Konzernabschluss zum 31.12.2018." Die Aktiengesellschaft 64, no. 23 (December 1, 2019): r346—r347. http://dx.doi.org/10.9785/ag-2019-642324.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hüllmann, Ulrich. "Controlling bei der GEA Group AG." Controlling 19, no. 10 (2007): 561–68. http://dx.doi.org/10.15358/0935-0381-2007-10-561.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Michael, Ian, Melodena Stephens Balakrishnan, and Zeenath Khan. "GEA Group – doing business in the Middle East." Emerald Emerging Markets Case Studies 5, no. 3 (June 22, 2015): 1–14. http://dx.doi.org/10.1108/eemcs-03-2015-0038.

Full text

Abstract:

Subject area Management, Strategy, International business. Study level/applicability Undergraduate or Graduates. Case overview This case is suitable for students of international business and strategy at the advanced undergraduate-level or introductory masters-level courses. It can be used for organizational design, brand management and business-to-business management classes. It may be of interest to practitioners in the Middle East and North African (MENA) markets looking at managing cross-functional teams. Expected learning outcomes On completion of utilizing the case study as an exercise, students should be able to develop the following. Case-specific skills: Critically examine the importance of the international business and strategy in the Middle East and demonstrate this by analyzing real-regional/-examples using complex theoretical frameworks; identify examples of best practice and explain the dynamics toward international business and strategy with reference to a range of theoretical models and apply these in a meaningful way to the MENA region. Discipline-specific skills: Synthesize and critically evaluate a corpus of academic literature and government reports on international business and strategy; link international business and strategy concepts and theories to real-regional/world examples. Personal and key skills: Reflect on the process of learning and undertake independent/self-directed learning (including time management) to achieve consistent, proficient and sustained attainment; work as a participant or leader of a group and contribute effectively to the achievement of objectives in the field of international business and strategy. Supplementary materials Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

APA, Harvard, Vancouver, ISO, and other styles

5

Terada, Takuro, Shigeyuki Tomita, Yoshihide Asaumi, Yoshinao Koshida, Nobuki Ishikawa, and Go Watanabe. "Effects of Ultrasonic Skeletonization of the Gastroepiploic Artery on Endothelial Nitric Oxide Production." Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery 4, no. 2 (March 2009): 93–98. http://dx.doi.org/10.1097/imi.0b013e3181a347cc.

Full text

Abstract:

Objective The right gastroepiploic artery (GEA) is a reliable conduit for coronary artery bypass grafting. Recently, ultrasonic skeletonization in graft harvesting has attracted attention as an alternative technique to increase the length and caliber size of grafts. The influence of GEA skeletonization using an ultrasonically activated device with that using an electrosurgical unit was compared from the viewpoint of production of nitric oxide (NO). Methods Fourteen pigs were used in this study. The GEA were harvested using an ultrasonically activated device (group ultrasonically activated device [USAD], n = 7) or electrocautery (group E, n = 7). Blood sampling was performed at the following three times from the distal end of the GEA: (1) preskeletonization, (2) pedicle, and (3) postskeletonization. Plasma NOx (NO metabolites) levels were measured by chemiluminescent assay. Moreover, in excised specimens, the expression of nitric oxide synthase was examined immunohistologically. Results In group USAD, the preskeletonization basal level of plasmaNOx in GEA was 25.7 ± 10.9 μmol/L, which then increased to 26.9 ± 10.5 μmol/L (pedicle) and 32.2 ± 12.1 μmol/L (postskeletonization). In group E, the preskeletonization basal plasma NOx level in GEA was 28.9 ± 11.4 μmol/L, which changed to 27.5 ± 8.9 μmol/L (pedicle) and 21.8 ± 8.3 μmol/L (postskeletonization). The results of multivariate analysis indicated that the patterns of changes in plasma NOx level were significantly different in both groups (P = 0.024). In group USAD, post hoc multiple comparison tests revealed a significant difference between preskeletonization and postskeletonization (P = 0.037). Conclusions Ultrasonically skeletonized GEA showed increased effective graft length, higher free flow capacity, and increased endothelial NO production than that prepared using an electrosurgical unit.

APA, Harvard, Vancouver, ISO, and other styles

6

Whittaker, William E., and Glenn R. Storey. "Ground-penetrating radar survey of the Sny Magill Mound Group, Effigy Mounds National Monument, Iowa." Geoarchaeology 23, no. 4 (June 16, 2008): 474–99. http://dx.doi.org/10.1002/gea.20229.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Aru, Angeolo, Salvatore Carboni, Maria-Raimonda Usai, and Andrea Vacca. "Summary of the workshop of the Archaeological Soil Micromorphology Working Group, Sardinia, Italy, April 11-14, 2002." Geoarchaeology 18, no. 7 (September 11, 2003): 827–29. http://dx.doi.org/10.1002/gea.10092.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Dickinson, William R., David V. Burley, and Richard Shutler. "Impact of hydro-isostatic holocene sea-level change on the geologic context of Island archaeological sites, Northern Ha'apai group, Kingdom of Tonga." Geoarchaeology 9, no. 2 (April 1994): 85–111. http://dx.doi.org/10.1002/gea.3340090202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Peruzzi, Pierpaolo, Sergio D. Bergese, Adolfo Viloria, Erika G. Puente, Mahmoud Abdel-Rasoul, and E. Antonio Chiocca. "A retrospective cohort-matched comparison of conscious sedation versus general anesthesia for supratentorial glioma resection." Journal of Neurosurgery 114, no. 3 (March 2011): 633–39. http://dx.doi.org/10.3171/2010.5.jns1041.

Full text

Abstract:

Object Glioma resection under conscious (“awake”) sedation (CS) is used for eloquent areas of the brain to minimize postoperative neurological deficits. The objective of this study was to compare the duration of hospital stay, overall hospital cost, perioperative morbidity, and postoperative patient functional status in patients whose gliomas were resected using CS versus general endotracheal anesthesia (GEA). Methods Twenty-two cases in 20 patients who underwent surgery for cerebral gliomas under CS and a matched cohort of 22 cases in 19 patients who underwent surgery under GEA over a 3-year period were retrospectively evaluated. Criteria for inclusion in the study were as follows: 1) a single cerebral lesion; 2) gross-total resection as evidenced by postoperative Gd-enhanced MR imaging within 48 hours of surgery; 3) a WHO Grade II, III, or IV glioma; 4) a supratentorial lesion location; 5) a Karnofsky Performance Scale score ≥ 70; 6) an operation performed by the same neurosurgeon; and 7) an elective procedure. Results The average hospital stay was significantly different between the 2 groups: 3.5 days for patients who underwent CS and 4.6 days for those who underwent GEA. This result translated into a significant decrease in the average inpatient cost after intensive care unit (ICU) care for the CS group compared with the GEA group. Other variables were not significantly different. Conclusions Patients undergoing glioma resection using CS techniques have a significantly shorter hospital stay with reduced inpatient hospital expenses after postoperative ICU care.

APA, Harvard, Vancouver, ISO, and other styles

10

Słysz, Aleksander. "In dubio pro tributario – discrimination of a group of taxpayers. Does the current shape of the norms violate the principle of equality before the law?" Gubernaculum et Administratio 2(18) (2018): 83–99. http://dx.doi.org/10.16926/gea.2018.02.14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "GEA Group"

1

Reichel, Clemens. "Vom Verbund zum Konzern : die Metallgesellschaft AG 1945 - 1975." Darmstadt Hessisches Wirtschaftsarchiv, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&docl̲ibrary=BVB01&docn̲umber=016986507&linen̲umber=0001&funcc̲ode=DBR̲ECORDS&servicet̲ype=MEDIA.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Medina, Jairzinho Ramos Gilmore Robert. "Gravitoelectromagnetism (GEM) : a group theoretical approach /." Philadelphia, Pa. : Drexel University, 2006. http://hdl.handle.net/1860/1123.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Saganowski, Stanislaw. "Analysis of Social Group Dynamics." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3232.

Full text

Abstract:

The continuous interest in the social network area contributes to the fast development of this field. New possibilities of obtaining and storing data allows for more and more deeper analysis of the network in general, as well as groups and individuals within it. Especially interesting is studying the dynamics of changes in social groups over time. Having such knowledge ones may attempt to predict the future of the group, and then manage it properly in order to achieve presumed goals. Such ability would be a powerful tool in the hands of human resource managers, personnel recruitment, marketing, etc. The thesis presents a new method for exploring the evolution of social groups, called Group Evolution Discovery (GED). Next, the results of its use are provided together with comparison to two other algorithms in terms of accuracy, execution time, flexibility and ease of implementation. Moreover, the method was evaluated with various measures of user importance within a group. Obtained results suggest that GED is the best method for analyzing social group dynamics.

APA, Harvard, Vancouver, ISO, and other styles

4

Tallapally, Venkatesham. "Colloidal Synthesis and Photophysical Characterization of Group IV Alloy and Group IV-V Semiconductors: Ge1-xSnx and Sn-P Quantum Dots." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5568.

Full text

Abstract:

Nanomaterials, typically less than 100 nm size in any direction have gained noteworthy interest from scientific community owing to their significantly different and often improved physical properties compared to their bulk counterparts. Semiconductor nanoparticles (NPs) are of great interest to study their tunable optical properties, primarily as a function of size and shape. Accordingly, there has been a lot of attention paid to synthesize discrete semiconducting nanoparticles, of where Group III-V and II-VI materials have been studied extensively. In contrast, Group IV and Group IV-V based nanocrystals as earth abundant and less-non-toxic semiconductors have not been studied thoroughly. From the class of Group IV, Ge1-xSnx alloys are prime candidates for the fabrication of Si-compatible applications in the field of electronic and photonic devices, transistors, and charge storage devices. In addition, Ge1-xSnx alloys are potentials candidates for bio-sensing applications as alternative to toxic materials. Tin phosphides, a class of Group IV-V materials with their promising applications in thermoelectric, photocatalytic, and charge storage devices. However, both aforementioned semiconductors have not been studied thoroughly for their full potential in visible (Vis) to near infrared (NIR) optoelectronic applications. In this dissertation research, we have successfully developed unique synthetic strategies to produce Ge1-xSnx alloy quantum dots (QDs) and tin phosphide (Sn3P4, SnP, and Sn4P3) nanoparticles with tunable physical properties and crystal structures for potential applications in IR technologies. Low-cost, less-non-toxic, and abundantly-produced Ge1-xSnx alloys are an interesting class of narrow energy-gap semiconductors that received noteworthy interest in optical technologies. Admixing of α-Sn into Ge results in an indirect-to-direct bandgap crossover significantly improving light absorption and emission relative to indirect-gap Ge. However, the narrow energy-gaps reported for bulk Ge1-xSnx alloys have become a major impediment for their widespread application in optoelectronics. Herein, we report the first colloidal synthesis of Ge1-xSnx alloy quantum dots (QDs) with narrow size dispersity (3.3±0.5 – 5.9±0.8 nm), wide range of Sn compositions (0–20.6%), and composition-tunable energy-gaps and near infrared (IR) photoluminescence (PL). The structural analysis of alloy QDs indicates linear expansion of cubic Ge lattice with increasing Sn, suggesting the formation of strain-free nanoalloys. The successful incorporation of α-Sn into crystalline Ge has been confirmed by electron microscopy, which suggests the homogeneous solid solution behavior of QDs. The quantum confinement effects have resulted in energy gaps that are significantly blue-shifted from bulk Ge for Ge1-xSnx alloy QDs with composition-tunable absorption onsets (1.72–0.84 eV for x=1.5–20.6%) and PL peaks (1.62–1.31 eV for x=1.5–5.6%). Time-resolved PL (TRPL) spectroscopy revealed microsecond and nanosecond timescale decays at 15 K and 295 K, respectively owing to radiative recombination of dark and bright excitons as well as the interplay of surface traps and core electronic states. Realization of low-to-non-toxic and silicon-compatible Ge1-xSnx QDs with composition-tunable near IR PL allows the unprecedented expansion of direct-gap Group IV semiconductors to a wide range of biomedical and advanced technological studies. Tin phosphides are a class of materials that received noteworthy interest in photocatalysis, charge storage and thermoelectric devices. Dual stable oxidation states of tin (Sn2+ and Sn4+) enable tin phosphides to exhibit different stoichiometries and crystal phases. However, the synthesis of such nanostructures with control over morphology and crystal structure has proven a challenging task. Herein, we report the first colloidal synthesis of size, shape, and phase controlled, narrowly disperse rhombohedral Sn4P3, hexagonal SnP, and amorphous tin phosphide nanoparticles (NPs) displaying tunable morphologies and size dependent physical properties. The control over NP morphology and crystal phase was achieved by tuning the nucleation/growth temperature, molar ratio of Sn/P, and incorporation of additional coordinating solvents (alkylphosphines). The absorption spectra of smaller NPs exhibit size-dependent blue shifts in energy gaps (0.88–1.38 eV) compared to the theoretical value of bulk Sn3P4 (0.83 eV), consistent with quantum confinement effects. The amorphous NPs adopt rhombohedral Sn4P3 and hexagonal SnP crystal structures at 180 and 250 °C, respectively. Structural and surface analysis indicates consistent bond energies for phosphorus across different crystal phases, whereas the rhombohedral Sn4P3 NPs demonstrate Sn oxidation states distinctive from those of the hexagonal and amorphous NPs owing to complex chemical structure. All phases exhibit N(1s) and ʋ(N-H) energies suggestive of alkylamine surface functionalization and are devoid of tetragonal Sn impurities.

APA, Harvard, Vancouver, ISO, and other styles

5

Haller, Sergei. "Computing Galois cohomology and forms of linear algebraic groups." Giessen Giessener Elektronische Bibliothek, 2005. http://geb.uni-giessen.de/geb/volltexte/2005/2474/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Mycroft, Hazel. "Talking food : everyday dieting practices in a weight management group." Thesis, Loughborough University, 2007. https://dspace.lboro.ac.uk/2134/2907.

Full text

Abstract:

This thesis used fifty hours of naturally occurring video and audio taped data from the ‘weigh-in' section of four commercial weight management groups in the East Midlands of England. This thesis is a discursive psychological and conversation analytic investigation of the turn-taking organization of the talk, examining what the group leaders and members make relevant in their talk about food and dieting. The data was transcribed using the Jeffersonian method. Group members attend the group weekly, and are weighed - their weight gain, loss or maintenance is recorded on a membership card. The analytic chapters follow the format of the ‘weigh-in' section of the meeting exploring firstly how the group leaders and members manage the practices of getting ready to be weighed; then how the ‘news' of weight gain, loss or maintenance is told and receipted; before exploring how ‘advice-giving' is constructed and the final analytic chapter deals with the issues of morality and accountability in the leaders' and members' talk. Analysis shows that the ‘pre-weigh in practices' involved before the group members are weighed consists of two robust patterns, 1) the practice of getting undressed is not oriented to by either the group members or group leaders and the group leaders avoided direct eye contact and concerned themselves with other business or 2) when no undressing practices took place, the group leaders were much more comfortable with direct eye contact. These sequences show how the body and its practices are constructed in particular ways within, and as part of the practices of getting ready to be weighed. Analysis showed the telling and receipting of weight news gets done differently depending on whether the group members have gained, lost or maintained weight. When the news concerned weight gain, the sequence included a ‘pre-announcement' and the news TCU was punctuated with marked trouble. When the news concerned weight loss, only the group members produced a pre-account and the news TCU contained no marked trouble. Finally, when the group members had maintained weight, the news TCU was delivered bluntly, and there was no evidence of trouble. In relation to advice-giving, analysis showed that group members repeatedly worked to assert their epistemic priority to avoid having to acknowledge the advice and the advice was receipted minimally. Finally, analysis showed that group members produced accounts with reference to a moral evaluation, such as blame or culpability. Sometimes an account was produced to circumvent being held publicly accountable for the event or action. It became apparent that both the group leaders and group members could not orient to themselves, their behaviour or food without it being constructed within a moral or accountable framework. Therefore, the thesis is an exploration of how group leaders and members manage the ‘dieting-practices' involved in getting weighed in a commercial weight management group and how using DP and CA can show the intricate turn by turn organization of such practices.

APA, Harvard, Vancouver, ISO, and other styles

7

Hinssen, Peter J. H. "What difference does it make? : the use of groupware in small groups /." Enschede : Telematica Instituut, 1998. https://doc.telin.nl/dscgi/ds.py/Get/File-7642/scout.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Skibiński, Maciej. "Effect of gem-difluorination on the conformation of selected hydrocarbon systems." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/7058.

Full text

Abstract:

Owing to its unique electronic properties, the CF₂ group has the potential to affect the conformation and polarity of molecules. The Introduction provides an overview of the conformational effects induced by the incorporation of fluorine into hydrocarbons, e.g. gauche effect, 1,3-C,F bond repulsion and angle deviation in organofluorine compounds. A summary of synthetic strategies for the introduction of the gem-difluoride motif into organic molecules is also presented. In order to explore the conformational impact of the CF₂ group in alicyclic hydrocarbon systems, cyclododecane was employed as the molecular framework. In 1,1,4,4- and 1,1,7,7- tetrafluorocyclododecanes, two CF₂ groups replaced CH₂ units within the square [3333] cyclododecane ring where the spacing enables the CF₂ groups to occupy adjacent or opposite corner locations. In the case of 1,1,6,6-tetrafluorocyclododecane, one of the CF₂ groups was forced to the edge position, which changes the ring conformation dramatically. Strategic incorporation of two CF₂ groups is shown to either stabilise or significantly alter the conformation of the cyclododecane framework, a revealing conformational preference of the CF₂ group to locate at the corner rather than the edge position of hydrocarbon rings. The study extends to larger cycloalkanes, rectangular [3434] cyclotetradecanes and square [4444] cyclohexadecanes. The target cycloalkanes bearing two CF₂ units were assembled through a novel synthetic route, employing ring-closing metathesis (RCM) as the key step. X-Ray structure analyses revealed that the CF₂ groups occupy exclusively corner locations of these rings too. The spacing between the CF₂ moieties dictates the overall ring conformations and offers a useful tool for controlling molecular arrangement. An accelerating role of the CF₂ group, relative to the CH₂ group, on the ring-closing metathesis of C5-substituted 1,8-nonadienes has also been studied. Remarkably, the CF₂ group exhibited a similar reaction rate to that observed for nonadienes bearing 1,3-dioxolane or dimethylmalonate groups. This effect was rationalised by the thermodynamic stability of the cycloheptene products, rather than a Thorpe-Ingold effect.

APA, Harvard, Vancouver, ISO, and other styles

9

Baranova, Valentina. "Phenotyping erythrocyte antigens on ORTHO Vision Analyzer in comparison with gel cards." Thesis, Uppsala universitet, Institutionen för medicinsk cellbiologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-451505.

Full text

Abstract:

Blood transfusion is a very common procedure. Before a blood transfusion it is important to find compatible blood for the patient. If the blood is incompatible with that of the patient a transfusion reaction may occur, which can be mortal. It is also important to avoid alloimmunisation. Alloimmunisation occurs when antibodies are produced against a specific antigen. These antibodies are called irregular antibodies and they can be produced after a transfusion, pregnancy, or transplantation. Alloimmunisation makes it harder to find compatible blood for patients in the future and it is a major concern for patients who require blood transfusions repeatedly. By phenotyping erythrocyte antigens, it is easier to find compatible blood for patients before a blood transfusion. Until now, a manual method has been used for phenotyping erythrocyte antigen at the Sundsvall County hospital and an automatization of this method was desired. For this study, 99 anonymised blood doner tests were used. The erythrocyte antigens M, Jka, Jkb, Fya, Fyb, S and s were phenotyped both manually and automated with ORTHO Vision Analyzer. A Clopper Pearson test was used to evaluate the accordance between the methods. A comparison was also made in regard totime and cost. The results showed a good accordance between the methods. The automated procedure using ORTHO Vision has several advantages over the manual procedure using gel cards. The risk of errors is reduced, there are fewer manual steps, it is faster and the personnel can do other tasks while the instrument is processing the tests.

APA, Harvard, Vancouver, ISO, and other styles

10

Hudson, Melanie. "Studies of the formation of homogeneous mixed silicon-titanium/zirconium oxides by the sol-gel route." Thesis, Brunel University, 1994. http://bura.brunel.ac.uk/handle/2438/5371.

Full text

Abstract:

This thesis is concerned with the preparation of mixed silicon-titanium oxides (Ti02=4.1-21.9wt%) and silicon-zirconium oxides (Zr02=4.1-22.Iwt%) by the sol-gel route. Methods of preparing homogeneous Si02-TiO2 gels and SiO2-Zr02 gels have been explored. In this work bis(acetylacetonato)titanium diisopropoxide or bis(acetylacetonato)zirconium dipropoxide and tetraethyl orthosilicate (TEOS) have been hydrolysed simultaneously in iso-propanol to form homogeneous gels. Using these systems, the effects of the reaction conditions, amount of titania/zirconia present in the gel, drying conditions and thermal treatment of the dry gels on the bulk and structural properties have been investigated by a variety of experimental methods including X-ray diffraction, mid- and near-infrared spectroscopy and gas adsorption techniques. For SiO2-TiO2 powders and monoliths, and SiO2-ZrO3 monoliths, thermal treatment has been found to significantly reduce the surface area (from 750-1.0m2g-1), pore volume (from 0.56-0.001cm3g-1') and relative number of silanol groups on the surface of the sample above 700°C. Average pore diameters remain constant at temperatures below 900°C (ca 54-21Å for monoliths), although the micropore volume does decrease (0.04-0.0cm3g-1) suggesting that smaller pores are destroyed by the heating process. For SiO2-TiO2 powders, the average pore diameter was ca IOÅ larger than for the corresponding monolith suggesting that small pores are destroyed during powdering. At 1100°C, gas adsorption data indicate that the samples are fully densified. This is supported by NIR spectra which detect no silanol groups on the surface of the sample. Structural changes arising from compositional changes and differing thermal treatment regimes have been monitored using mid-infrared spectroscopy and X-ray diffraction. With increasing temperature the silica matrix strengthens and titanium/zirconium are incorporated into the matrix. Monolithic SiO2-TiO2 gels (Ti02=6.34 weight%) remained amorphous at 1100°C, whereas powders began to exhibit diffraction patterns predominantly from anatase at 700°C. Anatase crystallite sizes have been calculated using the Scherrer equation and have been found to be between 16.3 and 5.4nm. Monolithic SiO2-ZrO2 gels containing 4.1 and 4.9 weight% zirconia were found to be amorphous after treatment at 1100°C. Increasing the zirconia content to 6.4 and 22.1 weight% resulted in gels that were amorphous up to 900°C. Further treatment at 1100°C, resulted in tetragonal zirconia and some cristobalite being formed. Crystallite sizes have been calculated as being between 2.7 and 1.6nm for tetragonal zirconia and from 4.1 to 2.8nm for cristobalite. Increasing the levels of titania/zirconia in the sample resulted in higher relative levels of hydrogen-bonded silanol groups. On hydration, the increased levels of titania/zirconia resulted in no observable free silanol groups on the surface suggesting that the surface becomes more hydrophilic as the amount of titania/zirconia present in the sample increases. This suggests that water becomes more tightly bound to Ti-OH /Zr-OH groups on the surface and within the pores, resulting in fewer free silanol type groups. A double alkoxide bis(acetylacetonato)titanium di(triethoxysilane) [Ti(acac)2(OSi(OC2H5)3)2] has also been synthesised and characterised. Mixed Si02-TiO2 gels have also been prepared by the simultaneous hydrolysis of Ti(acac)2(OSi(OC2H5)3)2 and TEOS under acidic conditions in ethanol. The effects of reaction conditions and thermal treatment of the dry gels have been investigated. Increasing the treatment temperature of the samples resulted in the progressive decrease in surface area (533-3.0m2g-1), pore volume (0.18-0.003cm3g-1), micropore volume (0.06-0.00cm3g-1) and relative number of silanol groups on the surface. However, the average pore diameter remained constant at temperatures up to 700°C. Changes in pore volume (0.07-0.005cm3g-1), surface area (300-3.0m2g-1) and average pore diameter (26.9-91.9Å) were largest at 900°C, and the samples were found to be almost completely dense. This was confirmed by the absence of observable silanol groups by NIR spectroscopy. After heating at temperatures up to 900°C, the samples were found to be amorphous by XRD. However increasing the temperature to 1100°C resulted in the formation of some crystalline anatase. The anatase crystal sizes have been calculated as being from 16.3 to 10.8nm in diameter. NIR studies of silica-zirconia and silica-titania gels (prepared by both methods), indicate that decreasing the amount of acid used in the hydrolysis reaction resulted in higher relative levels of hydrogen bonded silanol species. Similarly, decreasing the amount of acid increased the micropore volume and decreased the mesoporosity of the resulting samples. Generally, decreasing the amount of acid used for the hydrolysis for silica-zirconia and silica-titania gels (prepared by both methods), results in a decrease in the overall surface area and pore volume of the resulting material. The resulting isotherms indicate that the samples became less mesoporous as the amount of acid used in the hydrolysis reaction decreased. This was accompanied by an increase in the micropore volume. For SiO2-TiO2 monoliths prepared from a double alkoxide and Si02-ZrO2 monoliths the resulting pore structure is more rigid and composed of smaller pores than that of SiO2-TiO2 powders and monoliths prepared from bis(acetylacetonato)titanium diisopropoxide.

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "GEA Group"

1

M, Prichard H., and Open University, eds. Geo-platinum 87. London: Elsevier Applied Science, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Coriasco, Franz. Gen rosso story: Non solo musica. Roma: Città nuova, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

GEN: Um sopro de renovação em Goiás. Goiânia, GO: Editora Kelps, 2000.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Silicone Gel Breast Implants Independent Review Group. Silicone gel breast implants: The report of the Independent Review Group. London: The Stationery Office, 1998.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Taxonomic revision of the Chiliotrichum group sensu stricto (Compositae: Astereae). Washington, D.C: Smithsonian Institution Scholarly Press, 2009.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Dyall, Kenneth G. All-electron molecular Dirac-Hartree-Fock calculations: Properties of the Group IV monoxides GeO, SnO and Pbo. [Washington, D.C: National Aeronautics and Space Administration, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

Dyall, Kenneth G. All-electron molecular Dirac-Hartree-Fock calculations: Properties of the Group IV monoxides GeO, SnO and Pbo. [Washington, D.C: National Aeronautics and Space Administration, 1991.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

Guo, Xinghua. Piao bo yu xun gen: Liu dong ren kou de she hui ren tong yan jiu = Drifting and seeking roots : study on transient population's social identity. Di 1 ban: Zhongguo ren min da xue chu ban she, 2011.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Tools for team excellence: Getting your team into high gear and keeping it there. Palo Alto, Calif: Davies-Black Pub., 1996.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

The primes: How any group can solve any problem. Hoboken, N.J: Wiley, 2012.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "GEA Group"

1

Fiel, Wolfgang. "GEAM Mobile Architecture Study Group." In Eckhard Schulze-Fielitz, 84–87. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-211-99198-5_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Scott, Fenton. "Exploration for Platinum-Group Elements in the Labrador Trough, Canada." In Geo-Platinum 87, 211–14. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_21.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Augé, Thierry. "Platinum-Group Minerals in the Tiébaghi (New-Caledonia) and Vourinos (Greece) Ophiolites." In Geo-Platinum 87, 405. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_41.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ferrario, A., and G. Garuti. "Platinum-Group Minerals in Chromite-rich Horizons of the Niquelandia Complex (Central Goias, Brazil)." In Geo-Platinum 87, 261–72. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_30.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Plimer, Ian R., and Peter A. Williams. "New Mechanisms for the Mobilization of the Platinum-Group Elements in the Supergene Zone." In Geo-Platinum 87, 83–92. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Orberger, B., G. Friedrich, and E. Woermann. "Platinum-Group Element Mineralization in the Ultramafic Sequence of the Acoje Ophiolite Block, Zambales, Philippines." In Geo-Platinum 87, 361–80. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_38.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Burgath, Klaus-Peter. "Platinum-Group Minerals in Ophiolitic Chromitites and Alluvial Placer Deposits, Meratus-Bobaris Area, Southeast Kalimantan." In Geo-Platinum 87, 383–403. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_40.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Mountain, Bruce W., and Scott A. Wood. "Solubility and Transport of Platinum-Group Elements in Hydrothermal Solutions: Thermodynamic and Physical Chemical Constraints." In Geo-Platinum 87, 57–82. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Talkington, Raymond, David Gottfried, Norma Raitt, Bruce Lipin, John Puffer, and David Shirley. "The Distribution of the Platinum-Group Elements in the Palisades Sill, New Jersey and New York." In Geo-Platinum 87, 255–56. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_27.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Moring, Barry C., Norman J. Page, and R. L. Oscarson. "Platinum-Group Element Mineralogy of the Pole Corral Podiform Chromite Deposit, Rattlesnake Creek Terrane, Northern California." In Geo-Platinum 87, 257. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1353-0_28.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "GEA Group"

1

Ericson, Tristan M., and Robert G. Parker. "Grouping of Planetary Gear Modes With Significant Tooth Mesh Deflection." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-71501.

Full text

Abstract:

High natural frequencies of planetary gears tend collect into groups. The modes at these natural frequencies are characterized by motion of the planet gears with strain energy in the tooth meshes and planet bearings. Each group has one rotational, one translational, and one planet mode. The groups change in natural frequency together when system parameters are varied. The grouping behavior is disrupted with significant differences in planet-to-planet gear parameter values.

APA, Harvard, Vancouver, ISO, and other styles

2

Townsend, Dennis P. "Improvement in Surface Fatigue Life of Hardened Gears by High-Intensity Shot Peening." In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0082.

Full text

Abstract:

Abstract Two groups of carburized, hardened, and ground spur gears that were manufactured from the same heat of vacuum-induction-melted vacuum-are-remelted (VIM-VAR) AISI 9310 steel were endurance tested for surface fatigue. Both groups were manufactured with a standard ground 16-rms surface finish. One group was subjected to a shot-peening intensity of 7 to 9A, and the second group was subjected to a shot-peening intensity of 15 to 17A. All gears were honed after shot peening to a surface finish of 16 rms. The gear pitch diameter was 8.89 cm (3.5 in.). Test conditions were a maximum Hertz stress of 1.71 GPa (248 ksi), a gear temperature of 350 K (170 °F), and a speed of 10 000 rpm. The lubricant used for the tests was a synthetic paraffinic oil with an additive package. The following results were obtained: The 10-percent surface fatigue (pitting) life of the high-intensity (15 to 17A) shot-peened gears was 2.15 times that of the medium-intensity (7 to 9A) shot-peened gears, the same as that calculated from measured residual stress at a depth of 127 μm (5 mil). The measured residual stress for the high-intensity-shot-peened gears was 57 percent higher than that for the medium-intensity-shot-peened gears at a depth of 127 μm (5 mil) and 540 percent higher at a depth of 51 μm (2 mil).

APA, Harvard, Vancouver, ISO, and other styles

3

Ksander, Joe. "Gear." In SIGGRAPH '15: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2745234.2746902.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mendonça, Marcus Vinicius Laudares, and Michael Legge. "ADVANCED GEAR DESIGN OF SMS GROUP." In 53º Seminário de Laminação. São Paulo: Editora Blucher, 2017. http://dx.doi.org/10.5151/1983-4764-27742.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Durna, Ufuk, Mehmet Emin İnal, and İhsan Kurar. "An Assessment on the National Hotel Chain Growth Success: The Case of the Rixos Hotel Group." In International Conference on Eurasian Economies. Eurasian Economists Association, 2013. http://dx.doi.org/10.36880/c04.00747.

Full text

Abstract:

This study examines the growth phenomenon and strategies of Rixos Hotel Group, which is regarded as one of the local hotel groups. The growth forms of international hotel businesses vary from country to country. The hotel businesses need to get to know the working ways of both local partner and national tourism sector with the fact that legal arrangements and socio-cultural characteristics are very important in terms of growth strategies of hotel businesses in service industry. A Turkish Hotel Group has not been examined so far in the studies which have been already done about multinational hotel businesses. In this context, the growth type, growth strategy, guest relationships, education of employees and innovation applications of Rixos Hotel Group which is regarded one of the local hotel groups, are examined for the first time, which contributes to the importance level of this study in a positive way.

APA, Harvard, Vancouver, ISO, and other styles

6

Nusca, M. J., and M. J. McQuaid. "Combustion chamber fluid dynamics and hypergolic gel propellant chemistry simulations for selectable thrust rocket engines." In Proceedings. Users Group Conference. IEEE, 2004. http://dx.doi.org/10.1109/dod_ugc.2004.8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Mostafaee, Rashel, and Nader Kohansal Ghadimvand and Bahman Bohluli. "Reservoir evaluation of Bangestan Group, southwestern Iran." In GEO 2008. European Association of Geoscientists & Engineers, 2008. http://dx.doi.org/10.3997/2214-4609-pdb.246.255.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Nusca, Michael J., and Michael J. McQuaid. "Combustion Chamber Fluid Dynamics and Hypergolic Gel Propellant Chemistry Simulations for Selectable Thrust Rocket Engines." In 2006 HPCMP Users Group Conference. IEEE, 2006. http://dx.doi.org/10.1109/hpcmp-ugc.2006.14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Zou, Shuaidong, Guangjian Wang, and Li Yu. "Research on Calculation of Unloaded Transmission Error of Planetary Gear Train Caused by Eccentricity." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67463.

Full text

Abstract:

In this paper, calculation of no-load transmission error (TE) of planetary gear train is studied. The theory computational model of the eccentric planetary gear train with single planet gear (SPG) under no-load conditions is constructed initially for acquiring the formulas of no-load transmission ratio error and unloaded transmission error (UTE) of internal and external gear pairs. Then computational formula of the UTE of planetary gear train with SPG caused by eccentricity is presented. Through simulation TE and the developed formula of UTE, the eccentricities and initial phasing are uncoupled by curve fitting. Simultaneously, formula of UTE of planet gear train with SPG is validated. At the same time, different groups of initial phasing are analyzed to acquire the relatively good initial phasing group. In addition, the UTE of planetary gear train with multiple planet gears (MPG) caused by eccentricity is developed.

APA, Harvard, Vancouver, ISO, and other styles

10

Drozdowski, Pawel, Christian Rathgeb, and Christoph Busch. "Sic-Gen: A Synthetic Iris-Code Generator." In 2017 International Conference of the Biometrics Special Interest Group (BIOSIG). IEEE, 2017. http://dx.doi.org/10.23919/biosig.2017.8053520.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "GEA Group"

1

Gaponenko, Artiom, and Denis Sergeev. Site «MLESYS – multilevel education Internet-system for teachers and students». Science and Innovation Center Publishing House, November 2018. http://dx.doi.org/10.12731/er0158.09112018.

Full text

Abstract:

Site MLESYS (Multilevel education system) - multilevel educational Internet-system for the teachers (heads of scientific and educational groups) and the students (participants of groups) which allows teachers to create remote groups and also to form the storehouse of materials on their disciplines (lectures, manuals, presentations, tasks for independent work, etc.) with an opportunity of access to corresponding kinds of these materials by means of special links. Site MLESYS is developed on platform WordPress and on hosting Hostland. Site MLESYS allows: 1) for teachers: to create educational and scientific groups for remote communication of the participants of educational process, to include students in these groups; to place all necessary materials for the group (manuals, lectures, presentations, etc.); to form the storehouse of materials on each discipline (tests, tasks, cases, etc.), access to these materials can be carried out only by means of the link to the specific page; to communicate with participants of the group; 2) for the students: on condition of inclusion into remote group to have an opportunity to enter the group, to open and download the materials placed by the teacher; to get access to the materials by means of links (publications, tests, tasks, cases, etc.) of the corresponding teacher of a discipline from the storehouse of materials; to communicate with the teacher and participants of the group.

APA, Harvard, Vancouver, ISO, and other styles

2

Rahnema, Farzad, Alireza Haghighat, and Abderrafi Ougouag. Consistent Multigroup Theory Enabling Accurate Course-Group Simulation of Gen IV Reactors. Office of Scientific and Technical Information (OSTI), November 2013. http://dx.doi.org/10.2172/1111137.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Dörr, Philip. The impact of the EXIST Business Start-up Grant on corporate growth: A group comparison for Dresden (GER). Fteval - Platform for Research and Technology Policy Evaluation, May 2019. http://dx.doi.org/10.22163/fteval.2019.407.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Viguri, Sofía, Sandra López Tovar, Mariel Juárez Olvera, and Gloria Visconti. Analysis of External Climate Finance Access and Implementation: CIF, FCPF, GCF and GEF Projects and Programs by the Inter-American Development Bank. Inter-American Development Bank, January 2021. http://dx.doi.org/10.18235/0003008.

Full text

Abstract:

In response to the Paris Agreement and the Sustainable Development Goals (SDGs), the IDB Group Board of Governors endorsed the target of increasing climate-related financing in Latin America and the Caribbean (LAC) from 15% in 2015 to 30% of the IDB Groups combined total approvals by 2020. Currently, the IDB Group is on track to meet this commitment, as in 2018, it financed nearly US$5 billion in climate-change-related activities benefiting LAC, which accounted for 27% of total IDB Groups annual approvals. In 2019, the overall volume and proportion of climate finance in new IDBG approvals have increased to 29%. As the IDB continues to strive towards this goal by using its funds to ramp-up climate action, it also acknowledges that tackling climate change is an objective shared with the rest of the international community. For the past ten years, strategic partnerships have been forged with external sources of finance that are also looking to invest in low-carbon and climate-resilient development. Doing this has contributed to the Banks objective of mobilizing additional resources for climate action while also strengthening its position as a leading partner to accelerate climate innovation in many fields. From climate-smart technologies and resilient infrastructure to institutional reform and financial mechanisms, IDB's use of external sources of finance is helping countries in LAC advance toward meeting their international climate change commitments. This report collects a series of insights and lessons learned by the IDB in the preparation and implementation of projects with climate finance from four external sources: the Climate Investment Funds (CIF), the Forest Carbon Partnership Facility (FCPF), the Green Climate Fund (GCF) and the Global Environment Facility (GEF). It includes a systematic revision of their design and their progress on delivery, an assessment of broader impacts (scale-up, replication, and contributions to transformational change/paradigm shift), and a set of recommendations to optimize the access and use of these funds in future rounds of climate investment. The insights and lessons learned collected in this publication can inform the design of short and medium-term actions that support “green recovery” through the mobilization of investments that promote decarbonization.

APA, Harvard, Vancouver, ISO, and other styles

5

Irwin, J. Summary of Working Group 7, Part II: Linac protection and collimation of megawatt micron sized 250--500 GeV electron beams. Office of Scientific and Technical Information (OSTI), November 1992. http://dx.doi.org/10.2172/6921659.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Irwin, J. Summary of Working Group 7, Part II: Linac protection and collimation of megawatt micron sized 250--500 GeV electron beams. Office of Scientific and Technical Information (OSTI), November 1992. http://dx.doi.org/10.2172/10122606.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Copeland, M. J. Bullaluta Kindlei N. Gen., N. Sp. [Ostracoda, Archaeocopida] From Zone 5 [Late Cambrian, CedariaCrepicepha of the Cow Head Group, western Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1986. http://dx.doi.org/10.4095/120785.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

de Leede, Seran. Tackling Women’s Support of Far-Right Extremism: Experiences from Germany. RESOLVE Network, February 2021. http://dx.doi.org/10.37805/pn2021.13.remve.

Full text

Abstract:

Persistent gendered assumptions about women and violence predominately depict women as non-violent and peaceful. Due to this gender blindness and simplistic frames used to understand the attraction of women toward far-right extremist groups, women tend to get overlooked as active participants, and their roles ignored or downplayed. This not only hinders the overall understanding of far-right extremist groups but also impedes the development of effective counterprograms that specifically address the experiences and paths of these women. Drawing from the experiences and insights of German initiatives and from additional literature on the topic, this policy note explores the wide-ranging motivations of women joining far-right extremist groups and the different roles they can play in them. By including wider research to why women leave far-right extremist groups, the policy note offers lessons learned and recommendations that may be helpful in optimizing prevention and exit programs aimed at women in far-right extremist groups beyond the German context.

APA, Harvard, Vancouver, ISO, and other styles

9

Grotzinger, J. P., C. Gamba, S. M. Pelechaty, and D. S. McCormick. Stratigraphy of a 1.9 Ga foreland basin shelf-to-slope transition: Bear Creek Group, Tinney Hills area of Kilohigok Basin, District of Mackenzie. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/122646.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Amzeri, Achmad, Kaswan Badami, and Gita Pawana. Inheritance of resistance to downy mildew (Peronosclerospora maydis) in crossing of Madura Maize Plant (Zea mays L.). Innovative Scientific Information & Services Network, May 2019. http://dx.doi.org/10.21107/amzeri.2019.1.

Full text

Abstract:

Hybridization of Back cross is one method to get varieties that are resistant to downy mildew. The purpose of this study was to obtain information on inheritance characteristics of downy mildew resistance. This research was conducted at the experiment center of Agro-Technology Study Program of Agriculture Faculty, University of Trunojoyo Madura. Research of Assessment of resistance to Downy Mildew used a randomized block design with 18 treatments (P1, P2, F1, F2, BC1P1 and BC1P2 in three sets of crosses, namely LGL x Mdr-3, T12 x Mdr-1 and E02 x Mdr-2) and three replications so there were 54 experimental units. Identification of polymorphic RAPD markers for endurance to downy mildew through Bulk Segregant Analysis (BSA) was done by amplifying the DNA in the resistant pool and susceptible pool. The random primers used were 120 primers from 6 operon groups, namely OPA, OPB, OPC, OPD, OPF and OPG. The results showed that the inheritance pattern of maize genetic resistance to downy mildew followed a segregation pattern of 3:1 with a degree of dominance between -1 and 0, and was controlled by incomplete partially negative dominant gene. OPC-07 was a marker that was linkage close to the resistance to downy mildew with a genetic distance of 1.9 cM.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!