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  • 1
    Journal/Serial
    Journal/Serial
    Lisboa : Serviços Geológicos de Portugal
    Print: 28.1981 – 30.1991 (Location: Z 907b, W-Magazin: 70b)
    Continued as: Memórias do Instituto Geológico e Mineiro  (1995–1997)
    Publisher: Lisboa : Serviços Geológicos de Portugal
    Corporation: Portugal
    Print ISSN: 0037-2730
    Topics: Geosciences
    Keywords: Zeitschrift ; Geologie ; Mineralogie
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  • 2
    Journal/Serial
    Journal/Serial
    Lisboa : Serviços
    Print: 67.1981 – 78.1992 (Location: Z 907a, W-Magazin: 70b)
    Formerly as: Communicações da Commissão do Serviço Geológico de Portugal  (1904–1917)
    Supplement: Carta Mineira Portugal  (1952–1952)
    Supplement: O Miocénico marinho de Lisboa  (1956–1956)
    Publisher: Lisboa : Serviços
    Corporation: Portugal
    Print ISSN: 0037-2730
    Topics: Geosciences
    Keywords: Zeitschrift ; Geologie ; Mineralogie
    Abbreviation: Comun Serv Geol Port
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  • 3
    Online Resource
    Online Resource
    Rio de Janeiro :Editora Gryphus,
    Keywords: Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (112 pages)
    Edition: 1st ed.
    ISBN: 9788583110989
    Language: Portuguese
    Note: Intro -- Folha de rosto -- Epígrafe -- Prefácio -- Apresentação -- Sumário -- 1. Introdução -- 2. Processos referentes ao objeto no estudo do insight -- 2.1 O insight como o objeto da observação -- 2.2 Os aspectos neurocientíficos do insight -- 2.2.1 Aspectos cognitivos do insight -- 2.2.2 Estudos neurofisiológicos do insight -- 2.3 Neurociência da meditação -- 2.3.1 Aspectos cognitivos da meditação -- 2.3.2 Estudos neurofisiológicos da meditação -- 2.4 A manifestação do insight -- 3. Processos autorreferentes -- 3.1 A qualidade autorreferente da consciência -- 3.1.1 A consciência como elemento fundamental da natureza -- 3.1.2 A criação dos níveis de subjetividade -- 3.2 Os níveis da consciência -- 3.3 O estado fundamental da consciência -- 3.3.1 A Consciência Transcendental -- 3.3.2 A Meditação Transcendental -- 3.4 A origem do insight -- 4. O potencial criador do cérebro -- 4.1 O cérebro como refletor da consciência -- 4.2 O cérebro como expressão dos aspectos da consciência -- 4.3 Funcionamento cerebral total -- 4.4 O processo do insight -- 5. Conclusão -- Lista de ilustrações -- Lista de tabelas -- Referências -- Copyright.
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  • 4
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Quantum theory-Data processing. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (314 pages)
    Edition: 2nd ed.
    ISBN: 9783319978130
    Series Statement: Quantum Science and Technology Series
    DDC: 530.1201/51
    Language: English
    Note: Intro -- Preface -- Acknowledgements -- Contents -- 1 Introduction -- 2 The Postulates of Quantum Mechanics -- 2.1 State Space -- 2.1.1 State Space Postulate -- 2.2 Unitary Evolution -- 2.2.1 Evolution Postulate -- 2.3 Composite Systems -- 2.4 Measurement Process -- 2.4.1 Measurement Postulate -- 2.4.2 Measurement in the Computational Basis -- 2.4.3 Partial Measurement in the Computational Basis -- 3 Introduction to Quantum Walks -- 3.1 Classical Random Walk on the Line -- 3.2 Classical Discrete-Time Markov Chains -- 3.3 Coined Quantum Walks -- 3.3.1 Coined Walk on the Line -- 3.4 Classical Continuous-Time Markov Chains -- 3.5 Continuous-Time Quantum Walks -- 3.5.1 Continuous-Time Walk on the Line -- 3.5.2 Why Must Time be Continuous? -- 4 Grover's Algorithm and Its Generalization -- 4.1 Grover's Algorithm -- 4.2 Quantum Circuit of Grover's Algorithm -- 4.3 Analysis of the Algorithm Using Reflection Operators -- 4.4 Analysis Using the Two-Dimensional Real Space -- 4.5 Analysis Using the Spectral Decomposition -- 4.6 Optimality of Grover's Algorithm -- 4.7 Search with Repeated Elements -- 4.7.1 Analysis Using Reflection Operators -- 4.7.2 Analysis Using the Reduced Space -- 4.8 Amplitude Amplification -- 4.8.1 The Technique -- 5 Coined Walks on Infinite Lattices -- 5.1 Hadamard Walk on the Line -- 5.1.1 Fourier Transform -- 5.1.2 Analytic Solution -- 5.1.3 Other Coins -- 5.2 Two-Dimensional Lattice -- 5.2.1 The Hadamard Coin -- 5.2.2 The Fourier Coin -- 5.2.3 The Grover Coin -- 5.2.4 Standard Deviation -- 5.3 Quantum Walk Packages -- 6 Coined Walks with Cyclic Boundary Conditions -- 6.1 Cycles -- 6.1.1 Fourier Transform -- 6.1.2 Analytic Solutions -- 6.1.3 Periodic Solutions -- 6.2 Finite Two-Dimensional Lattices -- 6.2.1 Fourier Transform -- 6.2.2 Analytic Solutions -- 6.3 Hypercubes -- 6.3.1 Fourier Transform -- 6.3.2 Analytic Solutions. , 6.3.3 Reducing a Hypercube to a Line Segment -- 7 Coined Quantum Walks on Graphs -- 7.1 Quantum Walks on Class-1 Regular Graphs -- 7.2 Coined Quantum Walks on Arbitrary Graphs -- 7.2.1 Locality -- 7.2.2 Grover Quantum Walk -- 7.2.3 Coined Walks on Cayley Graphs -- 7.2.4 Coined Walks on Multigraphs -- 7.3 Dynamics and Quasi-periodicity -- 7.4 Perfect State Transfer and Fractional Revival -- 7.5 Limiting Probability Distribution -- 7.5.1 Limiting Distribution Using the Fourier Basis -- 7.5.2 Limiting Distribution of QWs on Cycles -- 7.5.3 Limiting Distribution of QWs on Hypercubes -- 7.5.4 Limiting Distribution of QWs on Finite Lattices -- 7.6 Distance Between Distributions -- 7.7 Mixing Time -- 7.7.1 Instantaneous Uniform Mixing (IUM) -- 8 Staggered Model -- 8.1 Graph Tessellation Cover -- 8.2 The Evolution Operator -- 8.3 Staggered Walk on the Line -- 8.3.1 Fourier Analysis -- 8.3.2 Standard Deviation -- 9 Spatial Search Algorithms -- 9.1 Quantum-Walk-Based Search Algorithms -- 9.2 Analysis of the Time Complexity -- 9.2.1 Case B=0 -- 9.2.2 Tulsi's Modification -- 9.3 Finite Two-Dimensional Lattices -- 9.3.1 Tulsi's Modification of the Two-Dimensional Lattice -- 9.4 Hypercubes -- 9.5 Grover's Algorithm as Spatial Search on Graphs -- 9.5.1 Grover's Algorithm in terms of the Coined Model -- 9.5.2 Grover's Algorithm in terms of the Staggered Model -- 9.5.3 Complexity Analysis of Grover's Algorithm -- 10 Element Distinctness -- 10.1 Classical Algorithms -- 10.2 Naïve Quantum Algorithms -- 10.3 The Optimal Quantum Algorithm -- 10.3.1 Analysis of the Algorithm -- 10.3.2 Number of Queries -- 10.3.3 Example -- 11 Szegedy's Quantum Walk -- 11.1 Discrete-Time Markov Chains -- 11.2 Markov Chain-Based Quantum Walk -- 11.3 Evolution Operator -- 11.4 Singular Values and Vectors of the Discriminant -- 11.5 Eigenvalues and Eigenvectors of the Evolution Operator. , 11.6 Quantum Hitting Time -- 11.7 Searching Instead of Detecting -- 11.8 Example: Complete Graphs -- 11.8.1 Probability of Finding a Marked Element -- A Linear Algebra for Quantum Computation -- A.1 Vector Spaces -- A.2 Inner Product -- A.3 The Dirac Notation -- A.4 Computational Basis -- A.5 Qubit and the Bloch Sphere -- A.6 Linear Operators -- A.7 Matrix Representation -- A.8 Diagonal Representation -- A.9 Completeness Relation -- A.10 Cauchy-Schwarz Inequality -- A.11 Special Operators -- A.12 Pauli Matrices -- A.13 Operator Functions -- A.14 Norm of a Linear Operator -- A.15 Tensor Product -- A.16 Quantum Gates, Circuits, and Registers -- Appendix B Graph Theory for Quantum Walks -- B.1 Basic Definitions -- B.2 Multigraph -- B.3 Bipartite Graph -- B.4 Intersection Graph -- B.5 Clique, Stable Set, and Matching -- B.6 Graph Operators -- B.6.1 Clique Graph Operator -- B.6.2 Line Graph Operator -- B.6.3 Subdivision Graph Operator -- B.6.4 Clique-Insertion Operator -- B.7 Coloring -- B.8 Diameter -- B.9 Directed Graph -- B.10 Some Named Graphs -- B.10.1 Johnson Graphs -- B.10.2 Kneser Graphs -- B.10.3 Cayley Graphs -- Appendix C Classical Hitting Time -- C.1 Hitting Time Using the Stationary Distribution -- C.2 Hitting Time Without the Stationary Distribution -- Appendix References -- -- Index.
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  • 5
    Keywords: Cellular signal transduction-Congresses. ; Electronic books.
    Description / Table of Contents: Proceedings of a symposium held in El Escorial, Spain, July 5-9, 1993.
    Type of Medium: Online Resource
    Pages: 1 online resource (255 pages)
    Edition: 1st ed.
    ISBN: 9781461518792
    DDC: 574.87/6
    Language: English
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  • 6
  • 7
    Book
    Book
    Lisbonne : Impr. Nationale
    Keywords: Geology ; Portugal ; Europa ; Topografie
    Type of Medium: Book
    Pages: 89 S., [7] teilw. gef. Bl. , Ill., Kt., graph. Darst. , 4°
    DDC: 551.8
    RVK:
    Language: French
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  • 8
    Publication Date: 2023-06-21
    Description: The European CORDEX (EURO-CORDEX) initiative is a large voluntary effort that seeks to advance regional climate and Earth system science in Europe. As part of the World Climate Research Programme (WCRP) - Coordinated Regional Downscaling Experiment (CORDEX), it shares the broader goals of providing a model evaluation and climate projection framework and improving communication with both the General Circulation Model (GCM) and climate data user communities. EURO-CORDEX oversees the design and coordination of ongoing ensembles of regional climate projections of unprecedented size and resolution (0.11° EUR-11 and 0.44° EUR-44 domains). Additionally, the inclusion of empirical-statistical downscaling allows investigation of much larger multi-model ensembles. These complementary approaches provide a foundation for scientific studies within the climate research community and others. The value of the EURO-CORDEX ensemble is shown via numerous peer-reviewed studies and its use in the development of climate services. Evaluations of the EUR-44 and EUR-11 ensembles also show the benefits of higher resolution. However, significant challenges remain. To further advance scientific understanding, two flagship pilot studies (FPS) were initiated. The first investigates local-regional phenomena at convection-permitting scales over central Europe and the Mediterranean in collaboration with the Med-CORDEX community. The second investigates the impacts of land cover changes on European climate across spatial and temporal scales. Over the coming years, the EURO-CORDEX community looks forward to closer collaboration with other communities, new advances, supporting international initiatives such as the IPCC reports, and continuing to provide the basis for research on regional climate impacts and adaptation in Europe.
    Keywords: ddc:551.6 ; EURO-CORDEX ; CORDEX ; Climate change ; Regional climate models ; Regional climate modelling
    Language: English
    Type: doc-type:article
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  • 9
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: We investigated the effect of the adenosine receptor agonist 5′-(N-ethylcarboxamido)adenosine (NECA) in catecholamine secretion from adrenal chromaffin cells that exhibit only the A2b subtype adenosine receptor. NECA reduced catecholamine release evoked by the nicotinic agonist 1,1-dimethyl-4-phenylpiperazinium (DMPP) in a time-dependent manner. Inhibition reached 25% after 30–40-min exposure to NECA. This effect on DMPP-evoked catecholamine secretion was mirrored by a similar (27.7 ± 3.3%), slowly developing inhibition of [Ca2+]i transients induced by DMPP that peaked at 30-min preincubation with NECA. The capacity of the chromaffin cells to buffer Ca2+ load was not affected by the treatment with NECA. Short-term treatment with NECA failed both to modify [Ca2+]i levels and to increase endogenous diacylglycerol production, showing that NECA does not activate the intracellular Ca2+/protein kinase C signaling pathway. The inhibitory effects of NECA were accompanied by a 30% increase of protein phosphatase activity in chromaffin cell cytosol. We suggest that dephosphorylation of a protein involved in DMPP-evoked Ca2+ influx pathway (e.g., L-type Ca2+ channels) could be the mechanism of the inhibitory action of adenosine receptor stimulation on catecholamine secretion from adrenal chromaffin cells.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 60 (1993), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Adenosine transport in cultured chromaffin cells was inhibited by purinergic P2y-receptor agonists without significant changes in the affinity constant, the values being between 1 ± 0.4 and 1.6 ± 0.6 μM. The Vmax parameter was modified significantly, being 40 ± 1.0, 26 ± 5.0, 32 ± 3.0, and 22 ± 4.7 pmol/106 cells/min for control, adenosine-5′-O-(2-thiodiphosphate), 5′-adenylylimidodiphosphate, and P1,P4-di(adenosine-5′-) tetraphosphate (Ap4A) (100 μM for every effector), respectively. Ap4A, a physiological ligand for P2y receptors in chromaffin cells, showed the highest inhibitory effect (45%). This transport inhibition is explained by an increase in the cytosolic Ca2+ concentration ([Ca2+]i) and the activation of protein kinase C (PKC). Experiments of [Ca2+]i measurement with the fura-2 technique showed that P2y agonists, as well as bradykinin, were able to increase [Ca2+]i, this effect being independent of the presence of extracellular Ca2+. The peptide bradykinin, determined to be coupled to phosphatidylinositol hydrolysis and internal Ca2+ mobilization in chromaffin cells, exhibited a behavior similar to that of P2y agonists in adenosine transport inhibition (39%). P2y agonists and bradykinin increased PKC activity associated with the membrane fraction (about 50% increase in particulate PKC activity with respect to controls). The present studies suggest that adenosine transport is regulated by P2y-purinergic receptors mediated via Ca2+ mobilization and PKC activation.
    Type of Medium: Electronic Resource
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