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  • 1
    Online Resource
    Online Resource
    Amsterdam :Elsevier Science & Technology,
    Keywords: Molecular orbitals. ; Gaussian basis sets (Quantum mechanics). ; Electronic books.
    Description / Table of Contents: Physical Sciences Data, Volume 16: Gaussian Basis Sets for Molecular Calculations provides information pertinent to the Gaussian basis sets, with emphasis on lithium, radon, and important ions. This book discusses the polarization functions prepared for lithium through radon for further improvement of the basis sets. Organized into three chapters, this volume begins with an overview of the basis set for the most stable negative and positive ions. This text then explores the total atomic energies given by the basis sets. Other chapters consider the distinction between diffuse functions and polarization function. This book presents as well the exponents of polarization function. The final chapter deals with the Gaussian basis sets. This book is a valuable resource for chemists, scientists, and research workers.
    Type of Medium: Online Resource
    Pages: 1 online resource (435 pages)
    Edition: 1st ed.
    ISBN: 9780444596475
    Series Statement: Issn Series ; v.Volume 16
    DDC: 541.224
    Language: English
    Note: Front Cover -- Gaussian Basis Sets for Molecular Calculations -- Copyright Page -- Table of Contents -- Preface -- Acknowledgements -- Chapter I. Genenral Introduction -- 1.1 Minimal basis set -- 1.2 Slater and Slater-type orbital -- 1.3 Optimization of minimal basis set -- 1.4 Choice of expansion pattern -- 1.5 Choice of Gaussian-type orbitals -- 1.6 Basis set superposition error (BSSE) -- 1.7 Present compilation of GTO basis sets -- 1.8 Positive and negative ions -- Chapter II. Practical Guides -- 2.1 Basis set notation -- 2.2 How to read the tables -- 2.3 Splitting the basis set -- 2.4 Balancing the basis sets -- 2.5 Adding polarization functions -- 2.6 Addition of diffuse functions -- 2.7 Atomic calculations -- References -- Table of Polarization Functions -- Chapter III. Gaussian Basis Sets.
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  • 2
    Publication Date: 2024-01-09
    Keywords: 191-1179B; 191-1179C; Cerium; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Dysprosium; Erbium; Europium; Event label; Gadolinium; Holmium; Inductively coupled plasma - mass spectrometry (ICP-MS); Joides Resolution; Lanthanum; Leg191; Lutetium; Neodymium; North Pacific Ocean; Ocean Drilling Program; ODP; Praseodymium; Samarium; Sample code/label; Terbium; Thulium; Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 645 data points
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  • 3
    Publication Date: 2024-01-09
    Keywords: 191-1179B; 191-1179C; Aluminium oxide; Calcium oxide; Carbon, inorganic, total; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Iron oxide, Fe2O3; Joides Resolution; Leg191; Loss on ignition; Magnesium oxide; Manganese oxide; North Pacific Ocean; Ocean Drilling Program; ODP; Phosphorus pentoxide; Potassium oxide; Sample code/label; Sediment type; Silicon dioxide; Sodium oxide; Titanium dioxide; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 579 data points
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  • 4
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Fukukawa, M; Takahashi, Y; Hayasaka, Yasutaka; Sakai, Y; Shimizu, Hiroshi (2004): Geochemical study of ODP Leg 191 Site 1179 sediments: direct observation of Mn and Ce oxidation states. In: Sager, WW; Kanazawa, T; Escutia, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 191, 1-24, https://doi.org/10.2973/odp.proc.sr.191.007.2004
    Publication Date: 2024-01-09
    Description: Depth profiles of major element and rare earth element (REE) abundances in sediment samples (mainly siliceous ooze and clay) recovered from Holes 1179B and 1179C at Site 1179, Ocean Drilling Program Leg 191 (41.4°N, 159.6°E) were determined. The oxidation states of Mn and Ce were determined by X-ray absorption near-edge structure. Some geochemical indicators were tested, including the MnO/TiO2 ratios, a bivariate diagram of La/Ce vs. Al2O3/(Al2O3+Fe2O3), and other discrimination diagrams. The oxidation state of Mn is reduced Mn(II) in the depth profile below 0.60 meters below seafloor (mbsf), which is consistent with relatively low and high abundances of Mn in the sediments and pore waters, respectively. It is possible that the diagenetic effect on the oxidation state and abundance of Mn makes it difficult for the MnO/TiO2 ratio to reflect the depositional environment. The normalized ratio of La and Ce does not change very much with depth, suggesting that the diagenetic effect does not affect the REE signature in the sediments. On the diagram of La/Ce vs. Al2O3/(Al2O3+Fe2O3), the sediments studied here plot at the boundary of the pelagic and continental margin fields. This suggests that continental material has contributed to the sediment to some degree, even though Site 1179 is in a pelagic region of the northwestern Pacific Ocean, 〉1600 km from Japan.
    Keywords: 191-1179B; 191-1179C; DRILL; Drilling/drill rig; Joides Resolution; Leg191; North Pacific Ocean; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 3319-3325 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The Mulliken electron population analysis has been a standard feature of computer output from the quantum mechanical molecular calculation. An extension of the original analysis is proposed here. It produces a point-charge model of a molecule that retains the same electric dipole moment as calculated with the molecular wave function. The analysis offers visually more interesting information than the original Mulliken analysis. The extension can be made easily by extracting and printing out some additional numerical data usually once computed but discarded after being processed in molecular calculations.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 40 (1983), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: For the purpose of demonstrating the action of taurine as a neuromodulator in addition to its suggested neurotransmitter function, the effects of taurine and muscimol on the depolarization-induced Ca-dependent release of [3H]γ-aminobutyric acid (pH]GABA) and l-[3H]glutamate in cerebellar slices from guinea pigs were investigated. The release of [3H]GABA was found to be greatly decreased by a GABA agonist, muscimol, and by taurine, but not by glycine. The release of l-[3H]glutamate was little affected by taurine. The release of [3H]GABA was enhanced by bicuculline and strychnine, but not by picrotoxin, and the suppressive action of muscimol on the GABA release was antagonized by bicuculline, picrotoxin, and strychnine, suggesting the possible existence of presynaptic autoreceptors for GABA in the cerebellum. The suppressive action of taurine on the release of [3H]GABA, on the other hand, was blocked only by bicuculline. These results suggest that taurine reduced the release of [3H]GABA from cerebellar slices by acting on the GABA autoreceptors or, more likely, on other types of receptors that are sensitive to bicuculline. As a possible mechanism for this modulatory action of taurine, the blockade by this amino acid of the influx of Ca2+ into cerebellar tissues was tentatively suggested.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 1146-1155 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Charge damage considerations are prompting the development of neutral beam sources for etching applications. Anisotropic etching with hyperthermal Cl2 and SF6 beams has been demonstrated. We describe a two-dimensional plasma chemistry fluid model of laser ablation of frozen Cl2 in vacuum as a neutral beam source. In this scheme an externally applied electric field would be used to enhance the dissociation rate of Cl2 potentially providing an enhanced Cl content in the beam for a greater etch rate. Laser ablation generated neutral beams also may contain a desirable and controllable ion content which may be used to further enhance the etch rate. Limitations of the concept are discussed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 1848-1858 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The transient response of electronegative radio-frequency glow discharges is important for process control, charge free etching, and highly selective etch applications. The step response of typical electronegative process gases (silane at 1 Torr and chlorine at 100 mTorr) is studied using a drift-diffusion model for silane and a three-moment model for chlorine. The silane simulations include a blocking capacitor whereas the chlorine results do not. For the silane results with a blocking capacitor in series with the plasma, it is found that there are three types of transients. Depending on the final steady-state value of the source rf voltage, the step response can be characterized either by smooth transitions in the number densities of species in the discharge from one steady state to the next, temporary extinction of the discharge or a discharge mode characterized by temporary extinction and reignition of the discharge. In the case of silane definite thresholds separate the phenomena. The step response of the chlorine discharges is always characterized by a smooth transition from one steady state to the next. Smooth transitions from one steady state to the next in the case of step decreases in the source voltage are possible since decrease of the negative ion density in the bulk is controlled by ion–ion recombination. It appears that the temporary extinction of the discharge and natural pulsed steady state is the consequence of how the voltage is divided between the gap and the blocking capacitor during the transient and the fact that the attachment coefficient becomes larger than the ionization coefficient at low values of reduced electric field. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 2093-2105 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Models capturing the periodic steady-state behavior of rf capacitively coupled discharges are now commonplace. New plasma sources have been motivated by selectivity, charge-damage mitigation, and general process control needs in plasma processing of electronic materials. These new sources require models that can accurately capture the transient behavior of the plasma source. Such models are not commonplace because the behavior of transport parameters in transients is still not well understood and because the problem is inherently stiff, i.e., widely disparate time scales are important. In this paper, we present the results of an investigation of the simplest type of transient, known as a step disturbance, in a 2 cm gap parallel-plate argon discharge at 1 Torr. As examples, two classes of step transients are considered: step increases in the peak-to-peak (pp) applied voltage (300 to up to 450 V pp) and step decreases (300 to as low as 150 V pp). The resulting transients are interpreted in terms of time scales representative of electron and ion motion in the sheath, ionization dynamics, and neutral transport processes. The possibility of using these transients as a means of process identification is discussed. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    International journal of cosmetic science 27 (2005), S. 0 
    ISSN: 1468-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Skin care cosmetics and emulsions are related closely. The recent emulsion technology has advanced the quality of cosmetics, and cosmetics technology has advanced the study of emulsion. Therefore, cosmetic or emulsion researchers including the author were able to develop highly functional cosmetics by studying the chemical structure of oils and the form of emulsions which are both main factors for emulsion. As for the chemical structure of oils, a study has shown that a high polar oil with unique properties was synthesized, and applied to make-up remover. This study was worthy of notice to connect the properties of the oil and emulsion with the organic conceptual diagram. As for the form of emulsion, it was reported that multiple type emulsion stabilized active ingredients and helped to permeate the skin markedly and employing a high-pressure homogenizer brought even higher efficiency.
    Type of Medium: Electronic Resource
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