Results 61 to 70 of about 184,229 (279)

Estudo do cristal líquido 4,4' -Di (n) - Alcoxibenzilazina (n = 5,11) por microscopia ótica, calorimetria diferencial e difração de raios-x [PDF]

open access: yes, 1984
Dissertaçao (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas.
Ouriques, Gerson Renzetti
core  

Purification, crystallization and preliminary X-ray diffraction analysis of an archaeal ABC-ATPase [PDF]

open access: yes, 2002
In the archaeon Sulfolobus solfataricus glucose uptake is mediated by an ABC transport system. The ABC-ATPase of this transporter (GlcV) has been overproduced in Escherichia coli and purified.
Andy-Mark W. H. Thunnissen   +20 more
core   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Double-sided fresnel zone plates as high performance optics in X-ray microscopy [PDF]

open access: yes, 2015
X-ray microscopy describes a range of analytical techniques, specialized for the characterization of organic and inorganic samples using high energy photons.
Mohácsi, István
core   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu   +10 more
wiley   +1 more source

Crystallographic and computational studies of organic non-linear optical materials [PDF]

open access: yes, 2007
This thesis presents work on the determination of both linear and non-linear optical properties of organic molecular crystals from high-resolution X-ray diffraction data.
Turner, Michael James
core  

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Single crystal x-ray diffraction studies on small, medium and large molecules [PDF]

open access: yes, 1996
Chapter 1. Production of crystals for diffraction analysis would be assisted by the devising of a set of rules which, given molecular formula, could predict crystal formation conditions.
Butterworth, Susanna
core  

Crystal structure of 2-(1,3-dioxoindan-2-yl)isoquinoline-1,3,4-trione

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title isoquinoline-1,3,4-trione derivative, C18H9NO5, the five-membered ring of the indane fragment adopts an envelope conformation with the nitrogen-substituted C atom being the flap. The planes of the indane benzene ring and the isoquinoline-1,3,
Raza Murad Ghalib   +4 more
doaj   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello   +7 more
wiley   +1 more source

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