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  1. Article ; Online: Assessment of a W:BiVO

    Song, Angang / Bogdanoff, Peter / Esau, Alexander / Ahmet, Ibbi Y / Levine, Igal / Dittrich, Thomas / Unold, Thomas / van de Krol, Roel / Berglund, Sean P

    ACS applied materials & interfaces

    2020  Volume 12, Issue 12, Page(s) 13959–13970

    Abstract: We assess a tandem photoelectrochemical cell consisting of a W:BiVO ...

    Abstract We assess a tandem photoelectrochemical cell consisting of a W:BiVO
    Language English
    Publishing date 2020-03-10
    Publishing country United States
    Document type Journal Article
    ISSN 1944-8252
    ISSN (online) 1944-8252
    DOI 10.1021/acsami.0c00696
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Formation of multilayered vesicles from water/organic-solvent (w/o) emulsions: theory and practice.

    Pidgeon, C / Hunt, A H / Dittrich, K

    Pharmaceutical research

    2013  Volume 3, Issue 1, Page(s) 23–34

    Abstract: Multilayered liposome (MLV) formation from water/organic-solvent (W/O) emulsions was studied ... and water spacing in MLV liposomes. MLVs prepared from W/O emulsions have optimum drug entrapment ...

    Abstract Multilayered liposome (MLV) formation from water/organic-solvent (W/O) emulsions was studied. A fundamental liposome population parameter, the E(ratio), was defined and used to estimate the bilayer number and water spacing in MLV liposomes. MLVs prepared from W/O emulsions have optimum drug entrapment at an emulsion-lipid/emulsion-water ratio of ∼0.33. Drug entrapment is typically 50 to 65% under these optimal conditions.
    Language English
    Publishing date 2013-11-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 843063-9
    ISSN 1573-904X ; 0724-8741 ; 0739-0742
    ISSN (online) 1573-904X
    ISSN 0724-8741 ; 0739-0742
    DOI 10.1023/A:1016316730560
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Conference proceedings: Quality Assessment in Pediatric Cardiology Using Network Technologies

    Wällisch, W. / Dittrich, S. / Cesnjevar, R. / Purbujo, A. / Schöffl, I. / Kapsner, L. / Mang, J.

    The Thoracic and Cardiovascular Surgeon

    2024  Volume 72, Issue S 02

    Event/congress 56th Annual Meeting of the German Society for Pediatric Cardiology (DGPK), Congress Center Hamburg, 2024-02-17
    Language English
    Publishing date 2024-01-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article ; Conference proceedings
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0044-1780712
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  4. Article ; Conference proceedings: New Exercise Test Variables for the Decision Process in Pulmonary Valve Replacement

    Schöffl, I. / Weigelt, A. / Dittrich, S. / Rottermann, K. / Wällisch, W. / Deindl, R.

    The Thoracic and Cardiovascular Surgeon

    2024  Volume 72, Issue S 02

    Event/congress 56th Annual Meeting of the German Society for Pediatric Cardiology (DGPK), Congress Center Hamburg, 2024-02-17
    Language English
    Publishing date 2024-01-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article ; Conference proceedings
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0044-1780719
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  5. Article ; Online: Cultural Survival in B. F. Skinner: Possibilities for Conceptual Refinement.

    Brunkow, Fernanda / Dittrich, Alexandre

    Behavior and social issues

    2021  Volume 30, Issue 1, Page(s) 774–786

    Abstract: ... available at 10.1007/s42822-020-00044-w. ...

    Abstract The concept of cultural survival is fundamental when describing the selection processes involved in cultural evolution. However, its application by Skinner was inconsistent. As a result, distinct and sometimes contradictory interpretations regarding what it means for a culture to survive occasionally emerge in the behavior-analytic literature. In this article, we aim to identify the stimuli that prompted Skinner to emit the verbal response "cultural survival." Our analysis suggests two problems: (a) the concept of cultural survival is used by Skinner to identify both the effects of cultural practices on the physical survival ofmembers of the culture and their effects on the survival of specific sets of social reinforcement contingencies via operant reinforcement, and (b) the concept is applied to two different phenomena-namely, first, the relation between the complete range of social reinforcement contingencies maintained by the human species and the physical survival of humankind, and, second, the relation between specific sets of these contingencies and the physical survival of particular groups. Finally, we argue for the importance of the precise identification of the groups and social contingencies that compose any "culture" submitted to a behavioral analysis.
    Supplementary information: The online version contains supplementary material available at 10.1007/s42822-020-00044-w.
    Language English
    Publishing date 2021-01-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2065362-1
    ISSN 2376-6786 ; 1064-9506
    ISSN (online) 2376-6786
    ISSN 1064-9506
    DOI 10.1007/s42822-020-00044-w
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  6. Article ; Conference proceedings: Exercise Echocardiography Combined with Cardiopulmonary Exercise Testing in Small Children

    Schöffl, I. / Weigelt, A. / Rottermann, K. / Dittrich, S. / Wällisch, W.

    The Thoracic and Cardiovascular Surgeon

    2023  Volume 71, Issue S 02

    Event/congress 55th Annual Meeting of the German Society for Pediatric Cardiology (DGPK), Congress Center Hamburg, 2023-02-11
    Language English
    Publishing date 2023-01-01
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article ; Conference proceedings
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0043-1761890
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  7. Book: Bibliotheken mit Pflichtexemplar in Deutschland

    Dittrich, Wolfgang

    1995  

    Author's details zsgest. von Wolfgang Dittrich
    Keywords Deutschland ; Länder ; Bibliothek ; Pflichtexemplar
    Subject Pflichtstück ; Bibliotheken ; Allgemeinbibliothek ; Bibliothekswesen ; Bücherei ; Universalbibliothek ; Gebrauchsbibliothek ; Flächenländer ; Bundesland ; Bundesländer ; Land
    Language German
    Size 97 S.
    Publisher Dt. Bibliotheksinst
    Publishing place Berlin
    Publishing country Germany
    Document type Book
    Remark 1995 B 1474: Fernleihe
    HBZ-ID HT006561008
    ISBN 3-87068-478-X ; 978-3-87068-478-5
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    Shelf markLoan statusLocation
    988/2834 available for loan (reading room) Freihandmagazin (U1)

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  8. Book: Bibliotheken mit Pflichtexemplar in Deutschland

    Dittrich, Wolfgang

    1995  

    Author's details zsgest. von Wolfgang Dittrich
    Keywords Deutschland ; Länder ; Bibliothek ; Pflichtexemplar
    Subject Pflichtstück ; Bibliotheken ; Allgemeinbibliothek ; Bibliothekswesen ; Bücherei ; Universalbibliothek ; Gebrauchsbibliothek ; Flächenländer ; Bundesland ; Bundesländer ; Land
    Language German
    Size 97 S.
    Publisher Dt. Bibliotheksinst
    Publishing place Berlin
    Publishing country Germany
    Document type Book
    Remark 1995 B 1474: Fernleihe
    HBZ-ID HT006561008
    ISBN 3-87068-478-X ; 978-3-87068-478-5
    Database Catalogue ZB MED Medicine, Health

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    Shelf markLoan statusLocation
    1995 B 1474 order for loan Magazin

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  9. Article ; Online: Survival and hormone production of isolated mouse follicles in three-dimensional artificial scaffolds after stimulation with bpV(HOpic).

    Keckstein, Philip / Dittrich, Ralf / Bleisinger, Nathalie / Hoffmann, Inge / Beckmann, Matthias W / Gebhardt, Albrecht / Schmid, Benjamin / Keckstein, Simon

    Archives of gynecology and obstetrics

    2024  Volume 309, Issue 5, Page(s) 2127–2136

    Abstract: Purpose: To preserve fertility before gonadotoxic therapy, ovarian tissue can be removed, cryopreserved, and transplanted back again after treatment. An alternative is the artificial ovary, in which the ovarian follicles are extracted from the tissue, ... ...

    Abstract Purpose: To preserve fertility before gonadotoxic therapy, ovarian tissue can be removed, cryopreserved, and transplanted back again after treatment. An alternative is the artificial ovary, in which the ovarian follicles are extracted from the tissue, which reduces the risk of reimplantation of potentially remaining malignant cells. The PTEN inhibitor bpV(HOpic) has been shown to activate human, bovine and alpacas ovarian follicles, and it is therefore considered a promising substance for developing the artificial ovary. The purpose of this study was to examine the impact of different scaffolds and the vanadate derivative bpV(HOpic) on mice follicle survival and hormone secretion over 10 days.
    Methods: A comparative analysis was performed, studying the survival rates (SR) of isolated mice follicle in four different groups that differed either in the scaffold (polycaprolactone scaffold versus polyethylene terephthalate membrane) or in the medium-bpV(HOpic) versus control medium. The observation period of the follicles was 10 days. On days 2, 6, and 10, the viability and morphology of the follicles were checked using fluorescence or confocal microscopy. Furthermore, hormone levels of estrogen (pmol/L) and progesterone (nmol/L) were determined.
    Results: When comparing the SR of follicles among the four groups, it was observed that on day 6, the study groups utilizing the polycaprolactone scaffold with bpV(HOpic) in the medium (SR: 0.48 ± 0.18; p = 0.004) or functionalized in the scaffold (SR: 0.50 ± 0.20; p = 0.003) exhibited significantly higher survival rates compared to the group using only the polyethylene terephthalate membrane (SR: 0). On day 10, a significantly higher survival rate was only noted when comparing the polycaprolactone scaffold with bpV(HOpic) in the medium to the polyethylene terephthalate membrane group (SR: 0.38 ± 0.20 versus 0; p = 0.007). Higher levels of progesterone were only significantly associated with better survival rates in the group with the polycaprolactone scaffold functionalized with bpV(HOpic) (p = 0.017).
    Conclusion: This study demonstrates that three-dimensional polycaprolactone scaffolds improve the survival rates of isolated mice follicles in comparison with a conventional polyethylene terephthalate membrane. The survival rates slightly improve with added bpV(HOpic). Furthermore, higher rates of progesterone were also partly associated with improved survival.
    MeSH term(s) Female ; Mice ; Animals ; Humans ; Cattle ; Progesterone/pharmacology ; Polyethylene Terephthalates ; Ovarian Follicle/physiology ; Ovary ; Cryopreservation
    Chemical Substances Progesterone (4G7DS2Q64Y) ; Polyethylene Terephthalates
    Language English
    Publishing date 2024-03-12
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 896455-5
    ISSN 1432-0711 ; 0932-0067
    ISSN (online) 1432-0711
    ISSN 0932-0067
    DOI 10.1007/s00404-024-07419-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Estimating risk probabilities for sickness from behavioural patterns to identify health challenges in dairy cows with multivariate cumulative sum control charts.

    Dittrich, I / Gertz, M / Maassen-Francke, B / Krudewig, K-H / Junge, W / Krieter, J

    Animal : an international journal of animal bioscience

    2022  Volume 16, Issue 8, Page(s) 100601

    Abstract: Dairy cattle housing is characterised by increasing herd sizes and the need for assisting technical tools to monitor the cows' health. This study investigated the combination of logistic regression models with multivariate cumulative sum (MCUSUM) control ...

    Abstract Dairy cattle housing is characterised by increasing herd sizes and the need for assisting technical tools to monitor the cows' health. This study investigated the combination of logistic regression models with multivariate cumulative sum (MCUSUM) control charts in healthmonitoring of dairy cattle. Sensor information of 618 cows with 791 lactations (138 438 cow days), nine behavioural variables were included as parts of the behavioural patterns: physical activity ("neck activity", "leg activity", "walking duration"), resting ("lying duration", "standing duration", "transitions from lying to standing") and feeding ("feeding duration", "rumination duration", "inactivity duration") behaviour. For each of these behavioural patterns, a logistic regression model with the health status (sick vs not sick) as a dependent variable was designed after a variable selection (herd level) based on the herd dataset with 618 cows (618 lactations; 115 547 cow days), which included the variables of each behaviour pattern and the stage of lactation nested in the number of lactations as explanatory variables. The explanatory variables were added stepwise to the model, with the final model being selected with respect to the lowest values of Akaike's and Bayes' information criteria. Each model was then applied to a dataset with 173 cows (22 891 cow days) at cow level, resulting in individual daily risk probabilities for getting sick. Thus, risk probabilities of each behavioural pattern were estimated and included in the MCUSUM control charts to identify cows at risk of disease. The performance of the MCUSUM control charts was cross-validated to identify the best fitting reference value k and the threshold value h. Alerts given within 5 days prior to diagnosis were counted as detected sicknesses. The performance resulted in a block sensitivity of 70.9-81.4%, specificity of 87.9-94.2% and a false-positive rate of 5.8-12.1%. The performance was confirmed while testing the entire algorithm resulting in a mean area under the receiver operating characteristics curve of 0.89. Calculating precision and the F
    MeSH term(s) Animals ; Bayes Theorem ; Cattle ; Cattle Diseases/diagnosis ; Cattle Diseases/epidemiology ; Dairying/methods ; Female ; Lactation ; Milk
    Language English
    Publishing date 2022-07-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2257920-5
    ISSN 1751-732X ; 1751-7311
    ISSN (online) 1751-732X
    ISSN 1751-7311
    DOI 10.1016/j.animal.2022.100601
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