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JournalISSN: 0036-8075

Science

About: Science is an academic journal. The journal publishes majorly in the area(s): Population & Gene. It has an ISSN identifier of 0036-8075. Over the lifetime, 147413 publication(s) have been published receiving 17892191 citation(s).

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Topics: Population, Gene, RNA ... show more
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147,413 results found


Open accessJournal ArticleDOI: 10.1126/SCIENCE.1102896
Kostya S. Novoselov1, Andre K. Geim1, Sergey V. Morozov, Da Jiang1  +4 moreInstitutions (1)
22 Oct 2004-Science
Abstract: We describe monocrystalline graphitic films, which are a few atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality. The films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands, and they exhibit a strong ambipolar electric field effect such that electrons and holes in concentrations up to 10 13 per square centimeter and with room-temperature mobilities of ∼10,000 square centimeters per volt-second can be induced by applying gate voltage.

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Topics: Carbon film (57%), Hall effect (55%), Ambipolar diffusion (54%) ... show more

48,846 Citations


Journal ArticleDOI: 10.1126/SCIENCE.220.4598.671
13 May 1983-Science
Abstract: There is a deep and useful connection between statistical mechanics (the behavior of systems with many degrees of freedom in thermal equilibrium at a finite temperature) and multivariate or combinatorial optimization (finding the minimum of a given function depending on many parameters). A detailed analogy with annealing in solids provides a framework for optimization of the properties of very large and complex systems. This connection to statistical mechanics exposes new information and provides an unfamiliar perspective on traditional optimization problems and methods.

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Topics: Optimization problem (61%), Continuous optimization (61%), Extremal optimization (59%) ... show more

38,868 Citations


Open accessJournal ArticleDOI: 10.1126/SCIENCE.286.5439.509
15 Oct 1999-Science
Abstract: Systems as diverse as genetic networks or the World Wide Web are best described as networks with complex topology. A common property of many large networks is that the vertex connectivities follow a scale-free power-law distribution. This feature was found to be a consequence of two generic mechanisms: (i) networks expand continuously by the addition of new vertices, and (ii) new vertices attach preferentially to sites that are already well connected. A model based on these two ingredients reproduces the observed stationary scale-free distributions, which indicates that the development of large networks is governed by robust self-organizing phenomena that go beyond the particulars of the individual systems.

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Topics: Evolving networks (64%), Complex network (63%), Network motif (60%) ... show more

30,921 Citations


Open accessJournal ArticleDOI: 10.1126/SCIENCE.162.3859.1243
Garrett Hardin1Institutions (1)
13 Dec 1968-Science
Abstract: The population problem has no technical solution; it requires a fundamental extension in morality.

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Topics: Commons (61%), Knowledge commons (60%), Tragedy of the commons (57%) ... show more

21,242 Citations


Journal ArticleDOI: 10.1126/SCIENCE.284.5411.143
02 Apr 1999-Science
Abstract: Human mesenchymal stem cells are thought to be multipotent cells, which are present in adult marrow, that can replicate as undifferentiated cells and that have the potential to differentiate to lineages of mesenchymal tissues, including bone, cartilage, fat, tendon, muscle, and marrow stroma. Cells that have the characteristics of human mesenchymal stem cells were isolated from marrow aspirates of volunteer donors. These cells displayed a stable phenotype and remained as a monolayer in vitro. These adult stem cells could be induced to differentiate exclusively into the adipocytic, chondrocytic, or osteocytic lineages. Individual stem cells were identified that, when expanded to colonies, retained their multilineage potential.

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19,560 Citations


Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
20211,530
20202,211
20192,108
20182,209
20172,393
20162,305

Top Attributes

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Journal's top 5 most impactful authors

Constance Holden

1K papers, 6.2K citations

Richard A. Kerr

1K papers, 8.9K citations

Eliot Marshall

873 papers, 7.8K citations

Jon Cohen

714 papers, 8.6K citations

Jocelyn Kaiser

710 papers, 7.3K citations

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