Microstructure Development During Plasma Spraying of Molybdenum Part 1: Splat Solidification

1998 ◽  
Author(s):  
C. Robert ◽  
A. Vardelle ◽  
G.-X. Wang ◽  
X.Y. Jiang ◽  
S. Sampath
Keyword(s):  
New York ◽  
Crystal Growth ◽  
Substrate Surface ◽  
Transfer Model ◽  
State University ◽  
Microstructure Development ◽  
Joint Work ◽  
Atomic Force ◽  
Plasma Sprayed ◽  
The University

Abstract Within the framework of a scientific collaboration between the University of Limoges, France and the State University of New York, Stony Brook, USA, a joint work has been conducted on microstructure development and properties of plasma-sprayed molybdenum coatings. This first part of the work is devoted to the study of the effect of substrate nature and temperature on splat cooling, solidification and crystalline structure. They were investigated by means of a heat transfer model in the splat and the substrate, and the observation of splats by a scanning electron microscope and an atomic force microscope. The model takes into account melt undercooling, nucleation and crystal growth, as also a possible melting and re-solidification of the substrate. It has the capability to predict the grain size distribution under assumptions that the quality of contact between the splat and the underlying layer is uniform, nucleation takes place only on the substrate surface, crystal grains grow perpendicular to the substrate surface and no grain coalescence occurs during crystal growth.

Plasma Sprayed Zirconia: Relationships Between Particle Parameters, Splat Formation and Deposit Generation-Part I: Impact and Solidification

1996 ◽  
Author(s):  
A.C. Léger ◽  
M. Vardelle ◽  
A. Vardelle ◽  
P. Fauchais ◽  
S. Sampath ◽  
...  
Keyword(s):  
New York ◽  
Research Work ◽  
State University ◽  
Characteristic Parameters ◽  
Joint Research ◽  
Splat Formation ◽  
Particle Parameters ◽  
Plasma Sprayed ◽  
The University ◽  
The Impact

Abstract Joint research work between the University of Limoges and the State University of New York, Stony Brook, has been carried out on the impact and solidification of plasma sprayed zirconia particles. A measurement device, consisting of a phase doppler particle analyser and a pyrometer, was used to correlate the characteristic parameters of splats to those of the substrate and to the size, velocity and temperature of the impacting particles.

Nucleation and Phase Selection in Plasma-Sprayed Alumina: Modeling and Experiment

1998 ◽  
Author(s):  
C. Robert ◽  
A. Denoirjean ◽  
A. Vardelle ◽  
G.-X. Wang ◽  
S. Sampath
Keyword(s):  
Nucleation Rate ◽  
Substrate Surface ◽  
Transfer Model ◽  
Phase Selection ◽  
Atomic Force ◽  
Average Size ◽  
Plasma Sprayed ◽  
Planar Solidification ◽  
Flattening Process ◽  
Selection Of

Abstract This paper presents a I-D heat transfer model which predicts the solidification and cooling of a plasma-sprayed alumina splat after the flattening process is completed. A heterogeneous nucleation process taking place on the substrate surface was assumed. The density and average size of the formed nuclei were determined from the integration of the nucleation rate calculated from the classical kinetic theory for nucleation. This rate depends on the activation energy required for nucleation which takes into account the effect of the surface via a wetting angle between the growing nucleus and the catalytic surface. This contact angle was estimated from the comparison of the computed grain density with the density observed on splat surface using an atomic force microscope. When 67 % of the splat surface in contact with the substrate are covered by grains, a planar solidification front was assumed to move through the melt. The theoretical model accounted also for the selection of the crystalline phase. Calculations were performed for various substrate materials at different initial temperatures. Results are expressed in terms of nucleation temperature, nucleation rate, density and grain size distribution.

Notice of transfer of figured specimens of North American Devonian cyclocystoids

1993 ◽  
Vol 67 (1) ◽  
pp. 151-151
Author(s):  
R. William Orr ◽  
Richard H. Fluegeman
Keyword(s):  
United States ◽  
New York ◽  
North American ◽  
The United States ◽  
State University ◽  
Ball State University ◽  
Geological Museum ◽  
University College ◽  
University Of Cincinnati ◽  
The University

In 1990 (Fluegeman and Orr) the writers published a short study on known North American cyclocystoids. This enigmatic group is best represented in the United States Devonian by only two specimens, both illustrated in the 1990 report. Previously, the Cortland, New York, specimen initially described by Heaslip (1969) was housed at State University College at Cortland, New York, and the Logansport, Indiana, specimen was housed at Ball State University, Muncie, Indiana. Both institutions recognize the importance of permanently placing these rare specimens in a proper paleontologic repository with other cyclocystoids. Therefore, these two specimens have been transferred to the curated paleontologic collection at the University of Cincinnati Geological Museum where they can be readily studied by future workers in association with a good assemblage of Ordovician specimens of the Cyclocystoidea.

scholarly journals James Moses. Trends in Rare Books and Documents Special Collections Management. 2013 Edition. New York: Primary Research Group, 2013. 64p. $75 (ISBN 978-1-57440-226-1).

2014 ◽  
Vol 15 (1) ◽  
pp. 78-80
Author(s):  
Amy Chen
Keyword(s):  
New York ◽  
Public Library ◽  
Ohio State University ◽  
State University ◽  
Collections Management ◽  
Special Collections ◽  
Rare Books ◽  
The Ohio State University ◽  
The University

Trends in Rare Books and Documents Special Collections Management, 2013 edition by James Moses surveys seven special collection institutions on their current efforts to expand, secure, promote, and digitize their holdings. The contents of each profile are generated by transcribed interviews, which are summarized and presented as a case study chapter. Seven special collections are discussed, including the Boston Public Library; AbeBooks; the University of Illinois at Urbana-Champaign; Washington University of St. Louis; the Archives and Rare Books Library, University of Cincinnati; the Rare Books and Manuscript Library at The Ohio State University; and the Manuscript, Archives, and Rare . . .

scholarly journals Reconstruction of the Fertiki Сampus of the Udmurt State University: Landscape Justification of the Design Project

2021 ◽  
pp. 35-48
Author(s):  
Julia Zamjatina ◽  
Alexey Kashin ◽  
Olesja Kondrat’eva ◽  
Il’shat Muhametshin
Keyword(s):  
Cultural Landscapes ◽  
Scientific Research ◽  
Necessary Condition ◽  
Internal Space ◽  
State University ◽  
Joint Work ◽  
Surrounding Space ◽  
The One ◽  
The University ◽  
Rich Content

The article presents the concept of reconstruction of the Fertiki unit of the biogeoecological station of the Udmurt State University (hereinafter – the Fertiki campus), formed in the process of joint work of geographers and designers. The presence of a field campus is a necessary condition for the professional skills and abilities formation of students in a number of training areas in a classical university. However, the requirements for the campuses internal space formation are changing. If one and a half to two decades ago it was enough to have a minimally equipped site on the territory that meets the basic needs in terms of the field practices and scientific research content, now the need to expand the functionality and types of activities is becoming more and more obvious. At the same time, it is proposed to put natural, cultural and historical features of the area within which the campus is located as the basis for modern design solutions. In conditions of limited funding and a general unstable financial situation, there is a need for more efficient use of the property complex of the university, including field campuses. They should not only satisfy the needs of conducting educational practices and scientific research, but become complex out-of-town (field) divisions of universities aimed at various types of activities. The proposed concept provides the reconstruction of the biogeoecological station in the direction of forming a focus point of natural and cultural landscapes of a vast territory. On the one hand, the campus must organically fit into the surrounding space, and on the other hand, it must reflect its main natural, cultural and historical features in order to get rich content. Only complexity and polyfunctionality can be stimuli and conditions for its development.

INHERITING THE WIND: A PERSONAL VIEW OF THE CURRENT CRISIS IN THEATRE HIGHER EDUCATION IN NEW YORK

2011 ◽  
Vol 52 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Marvin Carlson
Keyword(s):  
New York ◽  
New York State ◽  
Central Position ◽  
State University ◽  
Personal View ◽  
Current Crisis ◽  
American Theatre ◽  
Cornell University ◽  
The Public ◽  
The University

It is no secret, unhappily, that the study of theatre in the colleges and universities of this country is a discipline under siege, but the severity of the problems received strong confirmation in New York State this fall when two of the most distinguished and long-established (over a century in both cases) programs in the country were, with little warning, faced with draconian cuts or outright extinction. The fact that one, the state University of Albany, was the flagship school of the public system, and the other, Cornell University, was one of the state's most distinguished private institutions, suggests the scope and impact of these actions. At Albany, four other programs are being terminated along with theatre—Classics, Russian, Spanish, and French—while at Cornell the extent of the severe cuts imposed on the theatre program—almost a quarter of the total budget of the department (which also shelters dance and film)—are being suffered by no other program in the university. The prominence of these two schools in a state that has long claimed a central position in American theatre makes them particularly significant symbolically of a discipline in crisis, and this has impelled me to engage in serious and sometimes painful reflections on that discipline, the basis of the present essay.

New Methods for C-N Ring Construction

2011 ◽  
Author(s):  
Douglass Taber
Keyword(s):  
New York ◽  
Gold Complex ◽  
Cascade Process ◽  
State University ◽  
University Of Alberta ◽  
Cornell University ◽  
University Of New Mexico ◽  
Memory Of Chirality ◽  
Cu Catalyst ◽  
The University

Chaozhong Li of the Shanghai Institute of Organic Chemistry demonstrated (Organic Lett. 2008, 10, 4037) facile and selective Cu-catalyzed β-lactam formation, converting 1 to 2. Paul Helquist of the University of Notre Dame devised (Organic Lett. 2008, 10, 3903) an effective catalyst for intramolecular alkyne hydroamination, converting 3 into the imine 4. Six-membered ring construction worked well also. Jon T. Njardarson of Cornell University found (Organic Lett. 2008, 10, 5023) a Cu catalyst for the rearrangement of alkenyl aziridines such as 5 to the pyrroline 6. Philippe Karoyan of the UPMC, Paris developed (J. Org. Chem. 2008, 73, 6706) an interesting chiral auxiliary directed cascade process, converting the simple precursor 7 into the complex pyrrolidine 9. Sherry R. Chemler of the State University of New York, Buffalo devised (J. Am. Chem. Soc. 2008, 130, 17638) a chiral Cu catalyst for the cyclization of 10, to give 12 with substantial enantiocontrol. Wei Wang of the University of New Mexico demonstrated (Chem. Commun. 2008, 5636) the organocatalyzed condensation of 13 and 14 to give 16 with high enantio- and diastereocontrol. Two complementary routes to azepines/azepinones have appeared. F. Dean Toste of the University of California, Berkeley showed (J. Am. Chem. Soc. 2008, 130, 9244) that a gold complex catalyzed the condensation of 17 and 18 to give 19. Frederick G. West of the University of Alberta found (Organic Lett. 2008, 10, 3985) that lactams such as 20 could be ring-expanded by the addition of the propiolate anion 21. Takeo Kawabata of Kyoto University extended (Organic Lett . 2008, 10, 3883) “memory of chirality” studies to the cyclization of 23, demonstrating that 24 was formed in high ee. Paul V. Murphy of University College Dublin took advantage (Organic Lett . 2008, 10, 3777) of the well-known intramolecular addition of azides to alkenes, showing that the intermediate could be intercepted with nucleophiles such as thiophenol, to give the cyclized product 26 with high diastereocontrol.

doris davenport

2020 ◽  
pp. 513-519
Keyword(s):  
New York ◽  
Southern California ◽  
The State ◽  
University Of Southern California ◽  
State University ◽  
The University

doris davenport, born and reared in northeast Georgia, continues to identify as an Appalachian despite living and working outside the region. She holds degrees from Paine College (BA), the State University of New York at Buffalo (MA), and the University of Southern California (PhD) and teaches at Stillman College in Tuscaloosa, Alabama....

Learning Management Systems

2011 ◽  
pp. 1223-1230
Author(s):  
Diane Chapman
Keyword(s):  
New York ◽  
Liberal Arts ◽  
Educational Institutions ◽  
State University ◽  
Yale University ◽  
Cornell University ◽  
Penn State ◽  
Nontraditional Learning ◽  
The University ◽  
Learning Options

Formal university-based distance education has been around for over 100 years. For example, Cornell University established the Correspondence University in 1882, and Chautauqua College of Liberal Arts in New York was awarding degrees via correspondence courses in 1883 (Nasseh, 1997). Soon many other educational institutions, including the University of Chicago, Penn State University, Yale University, and John Hopkins University, were offering these nontraditional learning options for their students. Many institutions then moved to instructional telecommunications as the technology matured. With the entry of the personal computer into homes and workplaces in the 1980s, learning started to become more technology driven. But it was not until the 1990s, with the proliferation of the World Wide Web, that the concept of technology-enhanced education began to change drastically.

Introduction to Learning Management Systems

2011 ◽  
pp. 1280-1286 ◽  
Author(s):  
Diane D. Chapman
Keyword(s):  
New York ◽  
Liberal Arts ◽  
Educational Institutions ◽  
Traditional Learning ◽  
State University ◽  
Yale University ◽  
Cornell University ◽  
Johns Hopkins University ◽  
Penn State ◽  
The University

Formal university-based distance education has been around for over 100 years. For example, Cornell University established the Correspondence University in 1882, and Chautauqua College of Liberal Arts in New York was awarding degrees via correspondence courses in 1883 (Nasseh, 1997). Soon many other educational institutions, including the University of Chicago, Penn State University, Yale University, and Johns Hopkins University were offering these non-traditional learning options for their students. With the entry of the personal computer into homes and workplaces in the 1980s, learning started to become more technologydriven. However, it was not until the 1990s, with the proliferation of the World Wide Web, that the concept of technology-enhanced education began to change drastically.

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