Now showing items 12044-12063 of 12688

• #### Topologies of invention: An anthropological approach to the rhetoric of games ﻿

(2002)
A study of rhetorical practice in the design and interpretation of games, this dissertation draws on culture theory and ethnographic interviews to comprehend invention as a social act. Although only role-playing games ...
• #### Topology and convection of a northward interplanetary magnetic field reconnection event ﻿

(2009)
From observations and global MHD simulations, we deduce the local and global magnetic topology and current structure of a northward IMF reconnection event in the dayside magnetopause. The ESA four-satellite Cluster suite ...
• #### Topology of groups ﻿

(1943)
The present paper is self-contained and can be read without previous knowledge of either group theory or topology, except for some alterations in the approach to elementary topology and some minor omissions elsewhere. The ...
• #### Topology Optimization Applied to Patterned Composites ﻿

(2018-01-26)
In this thesis, based on a newly-defined form proposed for topological derivative, a novel topology optimization methodology was proposed to identify the optimal phase distribution in a two-phase material, an important ...
• #### Toric fibrations and models of universal torsors ﻿

(2015-04-23)
We study smooth projective threefolds fibered by toric surfaces over the projective line. We show that for certain families of degree 6 del Pezzo and quadric surface bundles the universal torsor corresponding to the generic ...

(1950)
• #### Torsional behavior of spandrel beams ﻿

(1968)
This investigation concerns the problem of load transfer from the slab through the spandrel beams (edge beams) to the exterior columns in flat plate construction. The load is transferred from the slab to the spandrel beam ...
• #### Torsional buckling of an extended twisted cylindrical rod under one-sided constraint ﻿

(1964)
The problem considered is that of the determination of stability criteria for an extended twisted cylindrical rod resting on a rigid plane inclined with respect to a gravity field. It was assumed that the tensile strain ...
• #### Torsional creep behavior of polycrystalline lead at high temperatures ﻿

(1960)
The torsional Creep behavior of polycrystalline lead was studied at temperatures near the melting point, and at low stresses. Secondary creep consisted of two clearly divided portions, with the second portion having a ...
• #### Torsional creep of tin at high temperatures ﻿

(1960)
Steady-state creep data are presented for tin tested in torsion at temperatures from 1000C to 228°C. Results obtained below 210°C verify observations of other investigators. A creep activation energy of 22.5 Kcal/mol in ...

(1975)

(1974)

(1977)
• #### Total synthesis of (+[over]-)-methyl 3-(3-isocyano-6-oxabicyclo [3.1.0] hex-2-en-5-yl)-2-propenoate ﻿

(1982)
(i)-Methyl 3-(3-isocyano-6-oxabicyclo OJhex-2-en-5-yl)-2-propenoate was prepared from 3tosyl-2-azabicyclo [2.2.l] hepta-2, 5-diene 14 was treated with methyl acetate carbanion in THF to afford the L-amino-oL-unsaturated ...
• #### Total synthesis of (-)-hapalindole G: A novel tin-mediated indole synthesis ﻿

(1994)
The first total synthesis of ($-$)-hapalindole G, a member of novel chlorine- and isonitrile-containing hapalindoles from the cultured cyanophyte Hapalosiphon fontinalis, is accomplished. Our 21-step synthesis of ...
• #### Total synthesis of (-)-safracin B total synthesis of (-)-thiangazole development of sulfonamide chemistry ﻿

(1997)
Chapter I describes the stereocontrolled total synthesis of ($-$)-safracin B with antibacterial and antitumor activities. The convergent approach for the synthesis of safracin B can be readily applied to the synthesis of ...
• #### Total synthesis of (-)-tantazole B. Total synthesis of (+,-)-FR900482 ﻿

(1993)
Tantazole B is a newly isolated tolytoxin. FR900482 is a recently isolated potent antitumor antibiotic. They both have novel structural features which present challenges to the synthetic chemists. The first total synthesis ...
• #### Total synthesis of mitomycins ﻿

(1990)
The total synthesis of mitomycins via isomitomycin A is described. Key reactions are a Michael-type coupling reaction between chalcone (94)* and 5-ethylthio-2-trimethylsiloxyfuran, followed by an azido-olefin cyclization. ...
• #### Total synthesis of shishijimicin A, design, synthesis and biological evaluation of analogues thereof, and total synthesis and full structural elucidation of namenamicin ﻿

(2018-08-31)
Enediyne natural products possessing both sophisticated chemical structures and outstanding bioactivities have received intensive attentions from chemical and biological communities since their first discovery made in ...
• #### Toward a better understanding of human polarized epithelial biology: Mucin 4 in endometrium and polarity complexes in salivary epithelium ﻿

(2017-04-20)
The epithelium is one of four major tissues in the human body. It covers every surface and cavity. Epithelial cells have an intracellular organization they use to differentiate the top, or apical surface, of the cell ...