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  • 1
    Online Resource
    Online Resource
    Untersuchung des geomechanischen Verhaltens von Schichtsalzen aus China in Abhängigkeit von Verunreinigungen. (2016)
    Göttingen :Cuvillier Verlag,
    Details
    Keywords: Rock salt--Handbooks, manuals, etc. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (163 pages)
    Edition: 1st ed.
    ISBN: 9783736982734
    Series Statement: Schriftenreihe des Energie-Forschungszentrums Niedersachsen (EFZN) ; v.37
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=5018890
    DDC: 553.63199999999995
    Language: German
    Note: Intro -- Vorwort und Danksagung -- Inhaltsübersicht -- Symbolverzeichnis -- Kurzzusammenfassung -- 1 Einführung -- 2 Stand der Wissenschaft zum mechanischen Verhalten von Steinsalz -- 3 Laboruntersuchungen an verunreinigten Steinsalzprüfkörpern aus Jintan, China -- 4 Einfluss der Verunreinigung auf das kurzzeitige Verhalten des Steinsalzes aus drei weiteren Lokationen in China -- 5 Zusammenfassung und Ausblick -- Literatur -- Lebenslauf.
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  • 2
    Online Resource
    Online Resource
    Rotating Electrode Methods and Oxygen Reduction Electrocatalysts. (2014)
    San Diego :Elsevier,
    Details
    Keywords: Reduction (Chemistry) -- Congresses. ; Electrochemical analysis -- Handbooks, manuals, etc. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (323 pages)
    Edition: 1st ed.
    ISBN: 9780444633286
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1666092
    DDC: 541.393
    Language: English
    Note: Front Cover -- Rotating Electrode Methods and Oxygen Reduction Electrocatalysts -- Copyright -- Contents -- Preface -- Biography -- List of Contributors -- CHAPTER 1 - OXYGEN SOLUBILITY, DIFFUSION COEFFICIENT, AND SOLUTION VISCOSITY -- 1.1. Introduction -- 1.2. Physical and Chemical Properties of Oxygen -- 1.3. Oxygen Solubility in Aqueous Solutions -- 1.4. O2 Diffusion Coefficients in Aqueous Solution -- 1.5. Viscosity of Aqueous Solution -- 1.6. Oxygen Solubility and Diffusion Coefficient in Nafion Membranes -- 1.7. Chapter Summary -- References -- CHAPTER 2 - ELECTRODE KINETICS OF ELECTRON-TRANSFER REACTION AND REACTANT TRANSPORT IN ELECTROLYTE SOLUTION -- 2.1. Introduction -- 2.2. Kinetics of Electrode Electron-Transfer Reaction -- 2.3. Kinetics of Reactant Mass Transport Near Electrode Surface3,4 -- 2.4. Effect of Reactant Transport on the Electrode Kinetics of Electron-Transfer Reaction -- 2.5. Kinetics of Reactant Transport Nearand within Porous Matrix Electrode Layer6 -- 2.6. Chapter Summary -- References -- CHAPTER 3 - ELECTROCATALYSTS AND CATALYST LAYERS FOR OXYGEN REDUCTION REACTION -- 3.1. Introduction -- 3.2. Concepts of Catalytic Activityand Stability -- 3.3. Current Research Effort in ORR Electrocatalysis -- 3.4. Electrocatalysts Synthesis andCharacterization -- 3.5. Catalyst Layers, Fabrication, and Characterization -- 3.6. Chapter Summary -- References -- CHAPTER 4 - ELECTROCHEMICAL OXYGEN REDUCTION REACTION -- 4.1. Introduction -- 4.2. Electrochemical Thermodynamics and Electrode Potential of ORR -- 4.3. Electrochemical Kinetics and Mechanism of ORR -- 4.4. ORR on Carbon Materials -- 4.5. ORR on Macrocyclic Transition Metal Complexes -- 4.6. Fundamental Understanding of ORR Mechanisms -- 4.7. Importance of ORR in Fuel Cells -- 4.8. Chapter Summary -- References -- CHAPTER 5 - ROTATING DISK ELECTRODE METHOD -- 5.1. Introduction. , 5.2. Rotating Disk Electrode Theory1,2 -- 5.3. Experimental Measurements of Rotating Disk Electrode -- 5.4. Chapter Summary -- References -- CHAPTER 6 - ROTATING RING-DISK ELECTRODE METHOD -- 6.1. Introduction -- 6.2. Theory of Rotating Ring-Disk Electrode Technique1 -- 6.3. RRDE Collection Efficiency -- 6.4. RRDE Instrumentation -- 6.5. RRDE Measurements -- 6.6. RRDE Data Analysis for ORR -- 6.7. Chapter Summary -- References -- CHAPTER 7 - APPLICATIONS OF RDE AND RRDE METHODS IN OXYGEN REDUCTION REACTION -- 7.1. Introduction -- 7.2. RDE/RRDE Study for ORR on Pt-based Electrode Surfaces -- 7.3. RDE/RRDE Study for ORR on Carbon-Based Electrode Surfaces -- 7.4. Oxygen Reduction Reaction on Monolayer Substances-Modified Carbon Electrode Surfaces -- 7.5. RDE/RRDE Study for ORR on the Surfaces of Supported Pt Particle- and Pt Alloy Particle-Based Catalyst Layer -- 7.6. RDE/RRDE Study for ORR on the Surfaces of Non-Noble Metal Catalyst Layer -- 7.7. Chapter Summary -- References -- INDEX.
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  • 3
    Online Resource
    Online Resource
    Harmonic Analysis : Proceedings of the special program at the Nankai Institute of Mathematics Tianjin, PR China, March–July, 1988 (1991)
    Berlin, Heidelberg : Springer Berlin Heidelberg
    Details Availability
    Keywords: Mathematics ; Topological Groups ; Fourier analysis. ; Lie groups. ; Topological Groups, Lie Groups ; Mathematics ; Konferenzschrift 1988 ; Harmonische Analyse
    Description / Table of Contents: All papers in this volume are original (fully refereed) research reports by participants of the special program on Harmonic Analysis held in the Nankai Institute of Mathematics. The main themes include: Wavelets, Singular Integral Operators, Extemal Functions, H Spaces, Harmonic Analysis on Local Domains and Lie Groups, and so on. See also :G. David "Wavelets and Singular Integrals on Curves and Surfaces", LNM 1465,1991. FROM THE CONTENTS: D.C. Chang: Nankai Lecture in -Neumann Problem.- T.P. Chen, D.Z. Zhang: Oscillary Integral with Polynomial Phase.- D.G. Deng, Y.S. Han: On a Generalized Paraproduct Defined by Non-Convolution.- Y.S. Han: H Boundedness of Calderon-Zygmund Operators for Product Domains.- Z.X. Liu, S.Z. Lu: Applications of H|rmander Multiplier Theorem to Approximation in Real Hardy Spaces.- R.L. Long, F.S. Nie: Weighted Sobolev Inequality and Eigenvalue Estimates of Schr|dinger Operator.- A. McIntosh, Q. Tao: Convolution Singular Integral Operators on Lipschitz Curves.- Z.Y. Wen, L.M.Wu, Y.P. Zhang: Set of Zeros of Harmonic Functions of Two Variables.- C.K. Yuan: On the Structures of Locally Compact Groups Admitting Inner Invariant Means
    Type of Medium: Online Resource
    Pages: Online-Ressource (X, 234 p, online resource)
    ISBN: 9783540464747 , 9783540549017
    Series Statement: Lecture Notes in Mathematics 1494
    URL: https://doi.org/10.1007/BFb0087751
    URL: http://dx.doi.org/10.1007/BFb0087751
    URL: https://swbplus.bsz-bw.de/bsz404658644cov.jpg
    URL: https://zbmath.org/?q=an:0762.00003
    DOI: 10.1007/BFb0087751
    RVK:
    SI 850
    Language: English
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  • 4
    Online Resource
    Online Resource
    Mikroseismische Aktivität geothermischer Systeme 2 - Vom Einzelsystem zur großräumigen Nutzung - MAGS2, Einzelprojekt 6: Entwicklung numerischer Analysemodelle zur lokalen seismischen Gefährdungseinschätzung vor Bohrbeginn und langfristige Bewertung von Geothermiefeldern unter Berücksichtigung THM:C gekoppelter Prozesse : Laufzeit 01.10.2013-31.01.2017 (2017)
    Goslar : [Energie-Forschungszentrum Niedersachsen]
    Details Availability
    Keywords: Forschungsbericht ; Geothermik ; Geothermische Energie ; Induzierte Seismizität ; Mikroseismik
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (56 Seiten, 6,62 MB) , Illustrationen, Diagramme
    URL: https://doi.org/10.2314/GBV:1011436345
    DOI: 10.2314/GBV:1011436345
    Language: German
    Note: Förderkennzeichen BMWi 0325662F. - Verbund-Nummer 01147788 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of Planetary High-Energy Ball Milling on Microstructure and Mechanical Properties of Silicon Nitride Ceramics (2005)
    Oxford, UK : Blackwell Science Inc
    Journal of the American Ceramic Society 88 (2005), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The influence of ball-milling methods on microstructure and mechanical properties of silicon nitride (Si3N4) ceramics produced by pressureless sintering for a sintering additive from MgO–Al2O3–SiO2 system was investigated. For planetary high-energy ball milling, the mechanical properties of Si3N4 ceramics were evidently improved and a homogeneous microstructure developed. In contrast, some exaggerated elongated grains were developed due to the local enrichment of sintering additives in the specimen prepared by general ball milling. For Si3N4 ceramics produced by planetary ball milling, flexure strength of 1.06 GPa, Vickers hardness of 14.2 GPa, and fracture toughness of 6.6 MPa·m0.5 were achieved. The differences in the mechanical properties of Si3N4 ceramics produced by different processing seem to arise mainly from the changes in microstructural homogenization and sinterability. The planetary high-energy ball-milling process provides a good route to mix starting powders for developing ceramics with uniform microstructure and promising mechanical properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1551-2916.2005.00227.x
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  • 6
    Electronic Resource
    Electronic Resource
    FISH detection of HER-2/neu oncogene amplification in early onset breast cancer (1996)
    Springer
    Breast cancer research and treatment 39 (1996), S. 203-212 
    Details
    ISSN: 1573-7217
    Keywords: breast cancer recurrence ; breast carcinoma in women under 40 ; c-erbB-2 ; disease-free survival ; fluorescent in situ hybridization ; HER-2/neu amplification ; prognostic indicators ; archival specimens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract HER-2/neu (c-erbB-2) gene amplification based on Southern blotting or immunohistochemistry has been shown to be predictive of poor outcome in breast cancer occurring in women over 40, but there is little data on the role of HER-2/neu in young women with breast cancer, many of whom may have inherited BRCA1 or other predisposing genes. The present study used fluorescent in situ hybridization (FISH) on archival specimens of breast cancer from 37 women under the age of 40 to evaluate the role of HER-2/neu amplification in this cohort, and to also evaluate the efficacy of FISH for quantifying amplification. The frequency of primary tumors with a greater than fourfold increase in gene copy number was found to be 38%, which is similar to the frequency of amplification reported in Southern blot studies in older women. However, the greater sensitivity of FISH enabled detection of low level amplification (more than 2 but less than 8 gene copies), which was found in an additional 30% of the tumors. Patients with low level amplification demonstrated a 54% recurrence rate, compared to 86% in those with high amplification and 17% in those with no amplification. HER-2/neu amplification appeared to be more prognostic of recurrence than nodal status, with 45% of node negative tumors recurring compared to 62% of those which were node positive, nor was tumor size predictive of recurrence in this cohort since tumors of 2 cm or less recurred in 44% of cases compared to 57% of those larger than 2 cm. Thus, this study demonstrates that FISH is a reproducible and sensitive technique for detecting HER-2/neu amplification, and that amplification of the oncogene is the strongest independent indicator of recurrence of breast cancer in young women.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01806187
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  • 7
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    Production of furfural and carboxylic acids from waste aqueous hemicellulose solutions from the pulp and paper and cellulosic ethanol industries (2011)
    Royal Society of Chemistry (RSC)
    Details
    Publication Date: 2011-04-29
    Description: This article describes a new process for the production of furfural and carboxylic acids from waste aqueous hemicellulose solutions. Rong Xing, Wei Qi, George W. Huber ( from Energy Environ. Sci.) Rong Xing, Energy Environ. Sci., 2011, DOI: 10.1039/C1EE01022K To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
    Print ISSN: 1754-5692
    Electronic ISSN: 1754-5706
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Royal Society of Chemistry (RSC)
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  • 8
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    Comparison of microgels, extracellular polymeric substances (EPS) and transparent exopolymeric particles (TEP) determined in seawater with and without oil (2019)
    Elsevier
    In:  Marine Chemistry, 215 (103667). pp. 1-29.
    Details
    Publication Date: 2022-01-31
    Description: Extracellular polymeric substances (EPS), produced by microorganisms, are implicated for greatly influencing the fate of environmental contaminants, including oil. Transparent exopolymeric particles (TEP) are gel-like acidic polysaccharide particles that can be stained with Alcian blue, whereas Coomassie stainable particles (CSP) contain proteins and are stained with Coomassie brilliant blue. Marine microgels are reversibly formed from EPS. These terms are often used interchangeably, but they have rarely been measured simultaneously. Mesocosm and bottle experiments provided an opportunity to compare EPS, TEP, CSP and microgels in a water-accommodated fraction (WAF) of oil and seawater (control). Our results reveal that the biopolymers making up EPS, TEP and CSP consisted primarily of polysaccharides and proteins, mostly likely as proteoglycans and glycoproteins. Significant correlations were found between concentrations of TEP-C vs particulate organic carbon (POC), TEP-C vs particulate organic nitrogen (PON), TEP vs EPS, TEP vs CSP, TEP vs carbohydrates, proteins, CSP and carbohydrates, CSP vs proteins, and carbohydrates vs proteins. Chemical analysis of whole particles and colloids yielded both protein and polysaccharides concentrations higher than those in EDTA extraction, thus providing an upper limit of actual EPS contents in the particulate phase. The EPS that was electrostatically held onto particle surfaces (extractable by 1% EDTA) accounted for a minor (~4%) yet relatively constant proportion of TEP. Overall, the concentrations of the three terms ranked in the order of [gels] 〉 [TEP] 〉 [particulate EPS] in the water. Lastly, spectrophotometric methods have limitations in identifying complex or refractory polysaccharides, as evidenced by the comparison between NMR-quantified EPS and the total EPS determined by spectrophotometric methods. This study is the first time these terms were compared in the same sample. They provide useful information when reviewing historical TEP, CSP, EPS data collected field- and laboratory-studies, and provide linkages between them. In addition, they also demonstrate that they could provide complementary information relevant to ecosystem and flux studies.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/j.marchem.2019.103667
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
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    Isolation and Characterization of Chinese Standard Fulvic Acid Sub-fractions Separated from Forest Soil by Stepwise Elution with Pyrophosphate Buffer (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-03-05
    Description: XAD-8 adsorption technique coupled with stepwise elution using pyrophosphate buffers with initial pH values of 3, 5, 7, 9, and 13 was developed to isolate Chinese standard fulvic acid (FA) and then separated the FA into five sub-fractions: FApH3, FApH5, FApH7, FApH9 and FApH13, respectively. Mass percentages of FApH3-FApH13 decreased from 42% to 2.5%, and the recovery ratios ranged from 99.0% to 99.5%. Earlier eluting sub-fractions contained greater proportions of carboxylic groups with greater polarity and molecular mass, and later eluting sub-fractions had greater phenolic and aliphatic content. Protein-like components, as well as amorphous and crystalline poly(methylene)-containing components were enriched using neutral and basic buffers. Three main mechanisms likely affect stepwise elution of humic components from XAD-8 resin with pyrophosphate buffers including: 1) the carboxylic-rich sub-fractions are deprotonated at lower pH values and eluted earlier, while phenolic-rich sub-fractions are deprotonated at greater pH values and eluted later. 2) protein or protein-like components can be desorbed and eluted by use of stepwise elution as progressively greater pH values exceed their isoelectric points. 3) size exclusion affects elution of FA sub-fractions. Successful isolation of FA sub-fractions will benefit exploration of the origin, structure, evolution and the investigation of interactions with environmental contaminants. Scientific Reports 5 doi: 10.1038/srep08723
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Nature Publishing Group (NPG)
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  • 10
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    Sensors, Vol. 15, Pages 28257-28270: The Mine LocomotiveWireless Network Strategy Based on Successive Interference Cancellation (2015)
    MDPI Publishing
    In: Sensors
    Details
    Publication Date: 2015-11-10
    Description: We consider a wireless network strategy based on successive interference cancellation (SIC) for mine locomotives. We firstly build the original mathematical model for the strategy which is a non-convex model. Then, we examine this model intensively, and figure out that there are certain regulations embedded in it. Based on these findings, we are able to reformulate the model into a new form and design a simple algorithm which can assign each locomotive with a proper transmitting scheme during the whole schedule procedure. Simulation results show that the outcomes obtained through this algorithm are improved by around 50% compared with those that do not apply the SIC technique.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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