Kooperativer Bibliotheksverbund

Berlin Brandenburg

and
and

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Language
Year
  • 1
    Language: English
    In: Journal of the American Chemical Society, 15 August 2012, Vol.134(32), pp.13180-3
    Description: Ultrasmall sub-10 nm nanoprobes and carriers are of significant interest due to their favorable biodistribution characteristics in in vivo experiments. Here we describe the one-pot synthesis of PEGylated mesoporous silica nanoparticles with a single pore, tunable sizes around 9 nm and narrow size distributions that can be labeled with near-infrared dye Cy5.5. Particles are characterized by a combination of transmission electron microscopy, dynamic light scattering, fluorescence correlation spectroscopy, optical spectroscopy, nuclear magnetic resonance spectroscopy, and nitrogen sorption/desorption measurements. The possibility to distinguish an "inside" and "outside" may render these particles an interesting subject for further studies in sensing, drug delivery, and theranostics applications.
    Keywords: Fluorescent Dyes -- Chemistry ; Nanoparticles -- Chemistry ; Silicon Dioxide -- Chemistry
    ISSN: 00027863
    E-ISSN: 1520-5126
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Language: English
    In: Journal of Obstetric, Gynecologic, & Neonatal Nursing, Sept, 2010, Vol.39, p.S131(1)
    Description: To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1552-6909.2010.01131_11.x Byline: Suzanne Wiesner (1) Author Affiliation: (1)RN, Catholic Healthcare West, Mercy General Hospital, Sacramento, CA
    ISSN: 0884-2175
    Source: Cengage Learning, Inc.
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Language: English
    In: Journal of Obstetric, Gynecologic, & Neonatal Nursing, Sept, 2010, Vol.39, p.S131(1)
    Description: To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1552-6909.2010.01131_11.x Byline: Suzanne Wiesner (1) Author Affiliation: (1)RN, Catholic Healthcare West, Mercy General Hospital, Sacramento, CA
    ISSN: 0884-2175
    Source: Cengage Learning, Inc.
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Language: English
    In: Journal of School Psychology, December 2013, Vol.51(6), pp.751-763
    Description: Several psychological assessment instruments are based on the assumption of a general construct that is composed of multiple interrelated domains. Standard confirmatory factor analysis is often not well suited for examining the factor structure of such scales. This study used data from 1885 elementary school students (mean age = 8.77 years, SD = 1.47 years) to examine the factor structure of the Behavioral Assessment System for Children, Second Edition (BASC-2) Behavioral and Emotional Screening System (BESS) Teacher Form that was designed to assess general risk for emotional/behavioral difficulty among children. The modeling sequence included the relatively new exploratory structural equation modeling (ESEM) approach and bifactor models in addition to more standard techniques. Findings revealed that the factor structure of the BASC-2 BESS Teacher Form is multidimensional. Both ESEM and bifactor models showed good fit to the data. Bifactor models were preferred on conceptual grounds. Findings illuminate the hypothesis-generating power of ESEM and suggest that it might not be optimal for instruments designed to assess a predominant general factor underlying the data.
    Keywords: Exploratory Structural Equation Modeling ; Bifactor Models ; Confirmatory Factor Analysis ; Higher-Order Factor Models ; Behavioral and Emotional Screening System ; Children ; Education ; Psychology
    ISSN: 0022-4405
    E-ISSN: 1873-3506
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Language: English
    In: Journal of Youth and Adolescence, 2012, Vol.41(2), pp.217-228
    Description: Developmental taxonomies of crime disagree on whether distinctive offender trajectories are related to common or unique risks. This study examined childhood risks of differing arrest trajectories across childhood through early adulthood (from ages 10–11 to 26–27 years) that were identified in prior work for 203 at-risk, predominantly Caucasian young men. Multivariate analyses revealed that when both distal (childhood risk factors) and proximal risk factors (deviant peer association as a time-varying covariate) were included in the model, relatively few childhood risk factors (assessed at age 9–10 years) discriminated the chronic offender groups from rare offenders (i.e., child antisocial behavior, child attention problems, parents’ antisocial behavior). Rather, deviant peer association was significantly related to levels of offending within each trajectory group (i.e., chronic and rare offender groups). No predictor differentially predicted membership in the two chronic groups, supporting the linear gradation argument. Theoretical and prevention implications are discussed.
    Keywords: Childhood predictors ; Life span ; Offending ; Trajectories
    ISSN: 0047-2891
    E-ISSN: 1573-6601
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Language: English
    In: Science (New York, N.Y.), 08 September 2017, Vol.357(6355), pp.973-974
    Description: Lungs execute two critical functions that can be at odds with one another: eliminating harmful toxins, particulates, and microbes; and exchanging gas through uninflamed structures--alveoli--to collect oxygen and discharge carbon dioxide. Lungs have a multilayered response to unwanted invaders, offering...
    Keywords: Immunity ; Inflammation -- Immunology
    ISSN: 00368075
    E-ISSN: 1095-9203
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Language: English
    In: Journal of the American Chemical Society, 19 January 2011, Vol.133(2), pp.172-5
    Description: Mesoporous silica with cubic symmetry has attracted interest from researchers for some time. Here, we present the room temperature synthesis of mesoporous silica nanoparticles possessing cubic Pm3n symmetry with very high molar ratios (〉50%) of 3-aminopropyl triethoxysilane. The synthesis is robust allowing, for example, co-condensation of organic dyes without loss of structure. By means of pore expander molecules, the pore size can be enlarged from 2.7 to 5 nm, while particle size decreases. Adding pore expander and co-condensing fluorescent dyes in the same synthesis reduces average particle size further down to 100 nm. After PEGylation, such fluorescent aminated mesoporous silica nanoparticles are spontaneously taken up by cells as demonstrated by fluorescence microscopy.
    Keywords: Nanoparticles -- Chemistry ; Silicon Dioxide -- Chemistry
    ISSN: 00027863
    E-ISSN: 1520-5126
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Language: English
    In: Chemistry - A European Journal, Nov 9, 2015, Vol.21(46), p.16494(10)
    Description: To purchase or authenticate to the full-text of this article, please visit this link: http://onlinelibrary.wiley.com/doi/10.1002/chem.201502584/abstract Byline: Sven Wiesner, Arne Wagner, Olaf Hubner, Elisabeth Kaifer, Hans-Jorg Himmel Keywords: charge-transfer; coordination compounds; copper; electronic structure; guanidine; redox-active ligands Abstract Tetranuclear, intensely blue-coloured Cu.sub.I complexes were synthesised in which two Cu.sub.2X.sub.3.sub.- units (X=Br or I) are bridged by a dicationic GFA (guanidino-functionalised aromatic) ligand. The UV/Vis spectra show a large metal-to-ligand charge-transfer (MLCT) band around 638 nm. The tetranuclear "low-temperature" complexes are in a temperature-dependent equilibrium with dinuclear Cu.sub.I "high-temperature" complexes, which result from the reversible elimination of two CuX groups. A massive thermochromism effect results from the extinction of the strong MLCT band upon CuX elimination with increasing temperature. For all complexes, quantum chemical calculations predict a small and method-dependent energy difference between the possible electronic structures, namely Cu.sub.I and dicationic GFA ligand (closed-shell singlet) versus Cu.sub.II and neutral GFA ligand (triplet or broken-symmetry state). The closed-shell singlet state is disfavoured by hybrid-DFT functionals, which mix in exact Hartree-Fock exchange, and is favoured by larger basis sets and consideration of a polar medium. Author Affiliation: Anorganisch-Chemisches Institut, Ruprecht-Karls Universitat Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg (Germany), Fax: (+49)6221-545707 Supporting information: Additional Supporting Information may be found in the online version of this article As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. CAPTION(S): miscellaneous_information
    ISSN: 0947-6539
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Language: English
    In: The Behavioral and brain sciences, June 2013, Vol.36(3), pp.291-2
    Description: We concentrate on two aspects of the article by Pothos & Busemeyer (P&B): the relationship between classical and quantum probability and quantum probability as a basis for rational decisions. We argue that the mathematical relationship between classical and quantum probability is not quite what the authors claim. Furthermore, it might be premature to regard quantum probability as the best practical rational scheme for decision making.
    Keywords: Cognition ; Models, Psychological ; Probability Theory ; Quantum Theory
    ISSN: 0140525X
    E-ISSN: 1469-1825
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Language: English
    In: Science (New York, N.Y.), 19 April 2013, Vol.340(6130), pp.337-41
    Description: Mesoporous nanomaterials have attracted widespread interest because of their structural versatility for applications including catalysis, separation, and nanomedicine. We report a one-pot synthesis method for a class of mesoporous silica nanoparticles (MSNs) containing both cubic and hexagonally structured compartments within one particle. These multicompartment MSNs (mc-MSNs) consist of a core with cage-like cubic mesoporous morphology and up to four branches with hexagonally packed cylindrical mesopores epitaxially growing out of the cubic core vertices. The extent of cylindrical mesostructure growth can be controlled via a single additive in the synthesis. Results suggest a path toward high levels of architectural complexity in locally amorphous, mesostructured nanoparticles, which could enable tuning of different pore environments of the same particle for specific chemistries in catalysis or drug delivery.
    Keywords: Chemistry Techniques, Synthetic ; Nanoparticles -- Chemistry ; Silicon Dioxide -- Chemistry
    ISSN: 00368075
    E-ISSN: 1095-9203
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. Further information can be found on the KOBV privacy pages