• Earth Friendly Planet

    Earth Friendly Planet

    An inspiring journey around the world. Each chapter provides a summary of every country on Earth, with focus on environment and wildlife, aimed toward providing the reader with a greater appreciation for other life forms, human or otherwise, that we all share on land or at sea, within this beautiful planet. Download it today!

     62 p pdu 30/10/2012 102 1

  • Từ điển bách khoa khoa học vật lý Anh – Anh.

    Từ điển bách khoa khoa học vật lý Anh – Anh.

    Aa A basaltic lava containing little gas and having low viscosity. Absolute age The actual time, in years, at which a geologic formation was laid down. See Radioactive dating. Absolute zero This is -273.15 degrees C, the lowest possible temperature. See also Kelvin temperature. Acid rain Rain with low pH, produced by combination of rain water with atmospheric pollutants, chiefly oxides of sulfur and nitrogen. Acid rain causes damage to the...

     65 p pdu 29/10/2012 196 5

  • Organic Chemistry, Biochemistry

    Organic Chemistry, Biochemistry

    Organic molecules are molecules that contain carbon and hydrogen. All living things contain these organic molecules: carbohydrates, lipids, proteins, and nucleic acids. These molecules are often called macromolecules because they may be very large, containing thousands of carbon and hydrogen atoms and because they are typically composed of many smaller molecules bonded together. These four macromolecules will be discussed in the second half...

     23 p pdu 20/10/2012 121 3

  • Magneto-optical trapping of diatomic molecules

    Magneto-optical trapping of diatomic molecules

    The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atoms. A similar technique for producing a diverse set of dense, ultracold diatomic molecular species will likewise transform the study of strongly interacting quantum systems, precision measurement, and physical chemistry. We demonstrate one- and two-dimensional...

     13 p pdu 25/09/2012 89 1

  • Photoproduction of η ′ mesons off nuclei and their properties in the nuclear medium

    Photoproduction of η ′ mesons off nuclei and their properties in the nuclear medium

    We study the photoproduction of $\eta^\prime$ mesons from nuclei near the threshold within the collision model based on the nuclear spectral function. The model takes properly into account both primary photon-nucleon and secondary pion-nucleon $\eta^\prime$ production processes as well as the effect of the nuclear $\eta^\prime$ mean-field potential on these processes. We find that the secondary pion-induced reaction channel ${\pi}N \to...

     17 p pdu 25/09/2012 94 1

  • Electromagnetic form factors of the nucleon in effective field theory

    Electromagnetic form factors of the nucleon in effective field theory

    We calculate the electromagnetic form factors of the nucleon to third chiral order in manifestly Lorentz-invariant effective field theory. The ρ and ω mesons as well as the ∆(1232) resonance are included as explicit dynamical degrees of freedom. To obtain a self-consistent theory with respect to constraints we consider the proper relations among the couplings of the effective Lagrangian. For the purpose of generating a systematic power...

     26 p pdu 25/09/2012 127 1

  • Investigation of the reaction 74Ge(p,gamma)75As using the in-beam method to improve reaction network predictions for p nuclei

    Investigation of the reaction 74Ge(p,gamma)75As using the in-beam method to improve reaction network predictions for p nuclei

    A measurement of 74Ge(p,gamma)75As at low proton energies, inside the astrophysically relevant energy region, is important in several respects. The reaction is directly important as it is a bottleneck in the reaction flow which produces the lightest p nucleus 74Se. It is also an important addition to the data set required to test reaction-rate predictions and to allow an improvement in the global p+nucleus optical potential required in such...

     14 p pdu 25/09/2012 84 1

  • Computability of the causal boundary by using isocausality

    Computability of the causal boundary by using isocausality

    Computability of the causal boundary by using isocausalityar Recently, a new viewpoint on the classical c-boundary in Mathematical Relativity has been developed, the relations of this boundary with the conformal one and other classical boundaries have been analyzed, and its computation in some classes of spacetimes, as the standard stationary ones, has been carried out. In the present paper, we consider the notion of isocausality given by...

     43 p pdu 25/09/2012 89 1

  • Metric Properties of the Fuzzy Sphere

    Metric Properties of the Fuzzy Sphere

    The fuzzy sphere, as a quantum metric space, carries a sequence of metrics which we describe in detail. We show that the Bloch coherent states, with these spectral distances, form a sequence of metric spaces that converge to the round sphere in the high-spin limit. It is common practice in several fields to "approximate: a manifold with a finite or countable subset of its points. A typical example in particle physics is the study of quantum...

     26 p pdu 25/09/2012 103 1

  • WILD QUOTIENT SURFACE SINGULARITIES WHOSE DUAL GRAPHS ARE NOT STAR-SHAPED

    WILD QUOTIENT SURFACE SINGULARITIES WHOSE DUAL GRAPHS ARE NOT STAR-SHAPED

    We obtain some results that answer certain questions of Lorenzini on wild quotient singularities in dimension two. Using Kato’s theory of log structures and log regularity, we prove that the dual graph of exceptional curves on the resolution of singularities contains at least one node. Furthermore, we show that diagonal quotients for Hermitian curves by analogues of Heisenberg groups lead to examples of wild quotient singularities where the...

     35 p pdu 25/09/2012 83 1

  • Basic 1H- and 13C-NMR Spectroscopy

    Basic 1H- and 13C-NMR Spectroscopy

    Basic 1H- and 13C-NMR Spectroscopy Part I: 1H-NMR Spectroscopy 1 - Introduction, Pages 3-8 2 - Resonance Phenomena, Pages 9-24 3 - Chemical Shift, Pages 25-85 4 - Spin-Spin Splitting in 1H-NMR Spectra, Pages 87-133 5 - Spin-Spin Splitting to Different Protons, Pages 135-158 6 - Spin Systems: Analysis of the 1H-NMR Spectra, Pages 159-197 7 - NMR Shift Reagents and Double Resonance Experiments: Simplification of the NMR Spectra, Pages 199-212 8...

     413 p pdu 24/05/2012 87 1

  • Từ điển Toán học Anh - Việt

    Từ điển Toán học Anh - Việt

    ạnh tranh khốc liệt, vì vậy nếu bạn không từ một trường hàng đầu, bạn có thể cần phải được tháo vát hơn và dai dẳng hơn những người đang có. Làm một tập trong lĩnh vực ngân hàng đầu tư là điều cần thiết để phá vỡ vào các lĩnh vực trong môi trường kinh doanh ngày nay. Mạng là chính, làm cho việc sử dụng cựu sinh viên mạng của bạn....

     301 p pdu 10/05/2012 100 1

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