Phd by thesis

doi:10.1038/332676B0

Home
/
Papers
/
Phd by thesis

Journal Article•DOI•

Phd by thesis

Richard Lathe¹•Institutions (1)

French Institute of Health and Medical Research¹

01 Apr 1988-Nature (Nature Publishing Group)-Vol. 332, Iss: 6166, pp 676-676

TL;DR: In this paper, a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) is presented.

read less

Abstract: Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

...read moreread less

Content maybe subject to copyright Report

Citations

PDF

Open Access

More filters

Journal Article•DOI•

Alkene chemistry on the palladium surface: nanoparticles vs single crystals

[...]

Aidan M. Doyle¹, Shamil K. Shaikhutdinov¹, Hans-Joachim Freund¹•Institutions (1)

Max Planck Society¹

25 Apr 2004-Journal of Catalysis

TL;DR: In this paper, the adsorption of trans-2-pentene, cis-2-, and 1-pentenes on Pd(111) and Pd/Al2O3 model catalysts has been studied using temperature-programmed desorption (TPD).

...read moreread less

136 citations

Journal Article•DOI•

Boron-nitride and boron-carbonitride nanotubes: synthesis, characterization and theory

[...]

Raul Arenal¹, Xavier Blase², Annick Loiseau¹•Institutions (2)

Centre national de la recherche scientifique¹, Joseph Fourier University²

15 Feb 2010-Advances in Physics

TL;DR: In this article, a joint experimental and theoretical overview of the synthesis techniques and properties of boron-nitride (BN) and Boron carbonitride (BCN) nanotubes is presented.

...read moreread less

Abstract: We present in this review a joint experimental and theoretical overview of the synthesis techniques and properties of boron-nitride (BN) and boron-carbonitride (BCN) nanotubes. While their tubular structure is similar to that of their carbon analogues, we show that their electronic properties are significantly different. BN tubes are wide band gap insulators while BCN systems can be semiconductors with a band gap in the visible range.

...read moreread less

135 citations

Cites background or methods from "Phd by thesis"

...[136] via laser ablation process; (2) in high quantity, via laser vaporization technique [28,75,76]....
[...]
...(c) HRTEM micrograph of straight and well-crystallized SW-BNNTs produced with this reactor, from Arenal [76]....
[...]
...These authors used molecular dynamics simulations to show that the most energetically favourable cap configuration, regardless of the helicity of the tubes, is three squares at the vertices of an equilatteral triangle (Figure 8, [76,160])....
[...]
...(1) Laser vaporization: h-BN target (1) High quantity of SW under N2 [28,75,76] dt1⁄4 1–3 nm; L 1 mm...
[...]
...Therefore this technique allows to determine the helicity of the nanotubes [28,76,108]....
[...]

Journal Article•

Symbolic model checking for probabilistic timed automata

[...]

Marta Kwiatkowska¹, Gethin Norman¹, Jeremy Sproston², Fuzhi Wang¹•Institutions (2)

University of Birmingham¹, University of Turin²

01 Jan 2004-Lecture Notes in Computer Science

TL;DR: This work presents symbolic model-checking algorithms for verifying probabilistic timed automata against properties of PTCTL (Probabilistic Timed Computation Tree Logic), and reports on a prototype implementation of the algorithms using Difference Bound Matrices.

...read moreread less

Abstract: Probabilistic timed automata are an extension of timed automata with discrete probability distributions, and can be used to model timed randomized protocols or fault-tolerant systems. We present symbolic model-checking algorithms for verifying probabilistic timed automata against properties of PTCTL (Probabilistic Timed Computation Tree Logic). The algorithms operate on zones, which are sets of valuations of the probabilistic timed automaton's clocks, and therefore avoid an explicit construction of the state space. Furthermore, the algorithms are restricted to system behaviours which guarantee the divergence of time with probability 1. We report on a prototype implementation of the algorithms using Difference Bound Matrices, and present the results of its application to the CSMA/CD and FireWire root contention protocol case studies.

...read moreread less

135 citations

Cites background or methods from "Phd by thesis"

...For qualitative formulae, we show that model checking can be performed using analogues from the verification of finite-state probabilistic systems [dA97], while, in the quantitative case, we show that the previously published zone-based approach for calculating maximal probabilities [KNS01] can be employed....
[...]
...Proposition 13 [dA97] If PS = (S,Steps,L) is a finite state probabilistic system and φ, ψ are PCTL formulae, then...
[...]

Journal Article•DOI•

TEM and XRD study of early crystallization of lithium disilicate glasses

[...]

Paulo Soares¹, Edgar Dutra Zanotto¹, Vladimir M. Fokin¹, Himanshu Jain²•Institutions (2)

Federal University of São Carlos¹, Lehigh University²

01 Dec 2003-Journal of Non-crystalline Solids

TL;DR: In this article, the early and intermediate stages of crystallization of three glasses on both sides of the stoichiometric composition through direct observations by transmission electron microscopy (TEM)/selected area electron diffraction (SAED) and X-ray diffraction was investigated.

...read moreread less

Abstract: Numerous researchers have speculated the precipitation of metastable phase(s) in the early stages of crystallization of lithium disilicate glass to explain the large discrepancies between the predictions of the classical nucleation theory (CNT) and experimental data. Therefore, we have investigated the early and intermediate stages of crystallization of three glasses on both sides of the stoichiometric composition through direct observations by transmission electron microscopy (TEM)/selected area electron diffraction (SAED) and X-ray diffraction (XRD). In samples heat-treated at ∼Tg=454 °C, two distinct crystalline phases, stable lithium disilicate (LS2) and metastable lithium metasilicate (LS) coexist up to 120 h at 454 °C (crystalline fraction

...read moreread less

135 citations

Cites background or methods from "Phd by thesis"

...While several authors suggested the possibility of a metastable phase precipitation (discussed below), Zanotto and Leite [13] concluded that metastable phases, if present at all, do not have any significant impact on the overall crystallization kinetics of LS2 glass....
[...]
...from Zanotto [12] and growth rate measured from TEM sizes....
[...]
...E-mail address: dedz@power.ufscar.br (E.D. Zanotto)....
[...]
...Estimated volume fraction of crystals, a, in stoichiometric lith from Zanotto [12] and growth rate measured from TEM sizes....
[...]
...The figure also shows the liquid–liquid phase separation region, according to Zanotto [12]....
[...]

Journal Article•DOI•

High resolution evidence for linkages between NW European ice sheet instability and Atlantic Meridional Overturning Circulation

[...]

Victoria L Peck¹, Ian Hall¹, R. Zahn², Henry Elderfield³, Francis E. Grousset⁴, Sidney R. Hemming⁵, James D. Scourse⁶ - Show less +3 more•Institutions (6)

Cardiff University¹, Catalan Institution for Research and Advanced Studies², University of Cambridge³, University of Bordeaux⁴, Lamont–Doherty Earth Observatory⁵, Bangor University⁶

30 Mar 2006-Earth and Planetary Science Letters

TL;DR: This paper showed that ice rafted debris (IRD) deposition preceding Heinrich (H) events H1 and H2 in the NE Atlantic was derived from the NW European ice sheets (NWEIS), possibly offering clues about ice sheet sensitivity and stability, and the mechanisms that caused periodic collapse of the Laurentide Ice Sheet (LIS).

...read moreread less

134 citations

Cites background from "Phd by thesis"

...3b; [23,43]) and the presence of distinctive dolomitic carbonate sourced from the Hudson Strait region of the LIS (Fig....
[...]
...(a) εNd of silicate fraction, (b) whole-core magnetic susceptibility [43], flux of ice rafted (c) hornblende grains with Palaeoproterozoic (1650– 1900 Ma) (40)Ar /(39)Ar ages, (d) total grains, (e) BIS grains, (f) volcanic grains and (g) dolomitic carbonate grains to MD01-2461 (N150 μm cm kyr)....
[...]

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
…
80
81
82
83
84
85
86
…
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200

Collapse

References

PDF

Open Access

More filters

Journal Article•DOI•

A new generation of Ca2+ indicators with greatly improved fluorescence properties.

[...]

G. Grynkiewicz¹, Martin Poenie, Roger Y. Tsien¹•Institutions (1)

University of California, Berkeley¹

25 Mar 1985-Journal of Biological Chemistry

TL;DR: A new family of highly fluorescent indicators has been synthesized for biochemical studies of the physiological role of cytosolic free Ca2+ using an 8-coordinate tetracarboxylate chelating site with stilbene chromophores that offer up to 30-fold brighter fluorescence.

...read moreread less

21,582 citations

"Phd by thesis" refers background in this paper

...members of this group were produced by Tsien and colleagues [1, 10, 11]....
[...]
...The introduction of Ca 2+ -sensitive fluorescent dyes more than twenty years ago and their permanent improvement [10] enabled investigators to gain unprecedented insights into the mechanisms of cellular signalling....
[...]

Report•DOI•

Feature-Oriented Domain Analysis (FODA) Feasibility Study

[...]

Kyo C. Kang, Sholom Cohen, James A. Hess, William E. Novak, A. S. Peterson - Show less +1 more

01 Nov 1990

TL;DR: This report will establish methods for performing a domain analysis and describe the products of the domain analysis process to illustrate the application of domain analysis to a representative class of software systems.

...read moreread less

Abstract: : Successful Software reuse requires the systematic discovery and exploitation of commonality across related software systems. By examining related software systems and the underlying theory of the class of systems they represent, domain analysis can provide a generic description of the requirements of that class of systems and a set of approaches for their implementation. This report will establish methods for performing a domain analysis and describe the products of the domain analysis process. To illustrate the application of domain analysis to a representative class of software systems, this report will provide a domain analysis of window management system software.

...read moreread less

4,420 citations

Journal Article•DOI•

Unified models for active galactic nuclei and quasars

[...]

Robert Antonucci

01 Jan 1993-Annual Review of Astronomy and Astrophysics

TL;DR: The straw person model (SPM) as mentioned in this paper has been proposed to explain the orientation effects of active galactic nuclei (AGN) and quasars in the line of sight (LOS) images.

...read moreread less

Abstract: Because the critical central regions of Active Galactic Nuclei (AGN) and quasars are strongly nonspherical but spatially unresolved, orientation effects have been the source of much confusion. In fact, it now appears that much of the variety in AGN types is just the result of varying orientation relative to the line of sight. We can define an extreme hypothesis,, the straw person model (SPM), in which there are two basic types of AGN: the radio quiets and the radio louds. For each type there is a range in intrinsic luminosity, and the luminosity controls some properties such as the Fanaroff and Riley classes. However, at a given intrinsic luminosity, all other properties such as spectroscopic classification and VLBI component speeds are ascribed to orientation. This model is only a caricature of the unification idea, and is already ruled out on many grounds, but it will be useful for organizing the discussion. I’ll describe what I consider to be convincing evidence that orientation effects are important and widespread. The true situation may be in some sense half way between the SPM and the hypothesis that orientation doesn’t affect classification at aIl. To us optimists, the orienration cup is half full rather than half empty. Although it is too soon to say for sure, the hypothesis that most objects’ classifications would be different if seen from other directions is a tenable one today.

...read moreread less

4,005 citations

Journal Article•DOI•

Nanocelluloses: A New Family of Nature-Based Materials

[...]

D. Klemm, Friederike Kramer, Sebastian Moritz, Tom Lindström, Mikael Ankerfors, Derek G. Gray¹, Annie Dorris¹ - Show less +3 more•Institutions (1)

McGill University¹

06 Jun 2011-Angewandte Chemie

TL;DR: This Review assembles the current knowledge on the isolation of microfibrillated cellulose from wood and its application in nanocomposites; the preparation of nanocrystalline cellulose and its use as a reinforcing agent; and the biofabrication of bacterial nanocellulose, as well as its evaluation as a biomaterial for medical implants.

...read moreread less

Abstract: Cellulose fibrils with widths in the nanometer range are nature-based materials with unique and potentially useful features. Most importantly, these novel nanocelluloses open up the strongly expanding fields of sustainable materials and nanocomposites, as well as medical and life-science devices, to the natural polymer cellulose. The nanodimensions of the structural elements result in a high surface area and hence the powerful interaction of these celluloses with surrounding species, such as water, organic and polymeric compounds, nanoparticles, and living cells. This Review assembles the current knowledge on the isolation of microfibrillated cellulose from wood and its application in nanocomposites; the preparation of nanocrystalline cellulose and its use as a reinforcing agent; and the biofabrication of bacterial nanocellulose, as well as its evaluation as a biomaterial for medical implants.

...read moreread less

3,452 citations

Journal Article•DOI•

A review of the features and analyses of the solid electrolyte interphase in Li-ion batteries

[...]

Pallavi Verma¹, Pascal Maire¹, Petr Novák¹•Institutions (1)

Paul Scherrer Institute¹

01 Sep 2010-Electrochimica Acta

TL;DR: The solid electrolyte interphase (SEI) is a protecting layer formed on the negative electrode of Li-ion batteries as a result of electrolyte decomposition, mainly during the first cycle as discussed by the authors.

...read moreread less

2,386 citations