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  1. Book ; Thesis: Die Implantation venöser Portsysteme - Präparation oder Punktion?

    Kühne, Christian

    eine prospektive, randomisierte Studie zum Vergleich zweier etablierter Implantationsverfahren

    2013  

    Author's details vorgelegt von Christian Kühne
    Language German
    Size 73 S. : Ill., graph. Darst.
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Aachen, Techn. Hochsch., Diss., 2013
    HBZ-ID HT018174545
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2014 D 309 order for loan Magazin

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  2. Book ; Audio / Video ; Thesis: Früh- und Spätergebnisse einer frühen Koronardiagnostik und Koronarintervention bei Akutem Myokardinfarkt, Postinfarktangina und Instabiler Angina Pectoris

    Kühne, Christian

    2004  

    Author's details von Christian Kühne
    Language German
    Size 1 CD-ROM, 12 cm
    Publishing country Germany
    Document type Book ; Audio / Video ; Thesis
    Thesis / German Habilitation thesis Magdeburg, Univ., Diss., 2004
    HBZ-ID HT014466928
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2005 MO 574 order for loan Magazin

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  3. Book ; Thesis: Verjüngung der Stieleiche (Quercus robur L.) in oberrheinischen Auenwäldern

    Kühne, Christian

    (Reihe Forstwissenschaften)

    2004  

    Author's details Christian Kühne
    Series title Reihe Forstwissenschaften
    Keywords Oberrheinisches Tiefland ; Auenwald ; Stieleiche ; Verjüngung
    Subject Bestandsverjüngung ; Bestandserneuerung ; Quercus pedunculata ; Quercus robur ; Sommereiche ; Auwald
    Language German
    Size III, 186 S., graph. Darst., Kt.
    Edition 1. Aufl.
    Publisher Sierke
    Publishing place Göttingen
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Göttingen, Univ., Diss. 2004
    HBZ-ID HT014485437
    ISBN 3-933893-06-2 ; 978-3-933893-06-2
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    058/2252 available for loan (reading room) Freihandmagazin (U1)

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  4. Book: Waldbauliche Behandlung der Auenwälder am Oberrhein unter besonderer Berücksichtigung der Stieleiche (Quercus robur L.)

    Kühne, Christian / Bartsch, Norbert / Röhrig, Ernst

    = Silvicultural management of floodplain forests of the Upper Rhine valley in special consideration of pedunculate oak (Quercus robur L.)

    (Schriften aus der Forstlichen Fakultät der Universität Göttingen und der Niedersächsischen Forstlichen Versuchsanstalt ; 140)

    2005  

    Title variant Silvicultural management of floodplain forests of the Upper Rhine valley in special consideration of pedunculate oak (Quercus robur L.)
    Author's details von Christian Kühne, Norbert Bartsch und Ernst Röhrig
    Series title Schriften aus der Forstlichen Fakultät der Universität Göttingen und der Niedersächsischen Forstlichen Versuchsanstalt ; 140
    Schriften aus der Forstlichen Fakultät der Universität Göttingen und der Nordwestdeutschen Forstlichen Versuchsanstalt
    Collection Schriften aus der Forstlichen Fakultät der Universität Göttingen und der Nordwestdeutschen Forstlichen Versuchsanstalt
    Keywords Oberrheinisches Tiefland ; Auenwald ; Stieleiche ; Eichenanbau
    Subject Eiche ; Quercus pedunculata ; Quercus robur ; Sommereiche ; Auwald
    Subject code 634.9721509434
    Language German
    Size 137 S., graph. Darst., Kt., 24 cm, 220 gr.
    Publisher Sauerländer
    Publishing place Frankfurt am Main
    Publishing country Germany
    Document type Book
    Note Literaturangaben
    HBZ-ID HT015623434
    ISBN 3-7939-5140-5 ; 978-3-7939-5140-7
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    088/1072 available for loan (reading room) Freihandmagazin (U1)

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  5. Article: Examining approaches for modeling individual tree growth response to thinning in Norway spruce

    Kuehne, Christian / Weiskittel, Aaron R. / Granhus, Aksel

    Forest ecosystems. 2022 July 14,

    2022  

    Abstract: Using periodic measurements from permanent plots in non-thinned and thinned Norway spruce (Picea abies (L.) H. Karst.) stands in Norway, individual-tree growth models were developed to predict annual diameter increment, height increment, and height to ... ...

    Abstract Using periodic measurements from permanent plots in non-thinned and thinned Norway spruce (Picea abies (L.) H. Karst.) stands in Norway, individual-tree growth models were developed to predict annual diameter increment, height increment, and height to crown base increment. Based on long-term data across a range of thinning regimes and stand conditions, alternative approaches for modeling response to treatment were assessed. Dynamic thinning response functions in the form of multiplicative modifiers that predict no effect at the time of thinning, a rapid increase followed by an early maximum before the effect gradually declines to zero could not be fitted to initially derived baseline models without thinning related predictors. However, alternative approaches were used and found to perform well. Specifically, indicator variables representing varying time periods after thinning were statistically significant and behaved in a robust manner as well as consistent with general expectations. In addition, they improved overall prediction accuracy when incorporated as fixed effects into the baseline models for diameter and height to crown base increment. Further, more simply, including exponentially decreasing multiplicative thinning response functions improved prediction accuracy for height increment and height to crown base increment. Irrespective of studied attribute and modelling approach, improvement in performance of these extended models was relatively limited when compared to the corresponding baseline models and more pronounced in trees from thinned stands. We conclude that the largely varying and often multi-year measurement intervals of the periodic data used in this study likely prevented the development of more sophisticated thinning response functions. However, based on the evaluation of the final models’ overall performance such complex response functions may not to be necessary to reliably predict individual tree growth after thinning for certain conditions or species, which should be further considered in future analyses of similar nature.
    Keywords Picea abies ; forests ; prediction ; tree growth ; Norway
    Language English
    Dates of publication 2022-0714
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 2760380-5
    ISSN 2197-5620
    ISSN 2197-5620
    DOI 10.1016/j.fecs.2022.100060
    Database NAL-Catalogue (AGRICOLA)

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  6. Book: Leitfaden zur Umsetzung des Europäischen Schadstoffemissionsregisters (EPER) in Deutschland

    Kühne, Christian / Striegel, Gabriel

    (Texte / Umweltbundesamt ; [20]01,50)

    2001  

    Author's details von Christian Kühne ; Gabriel Striegel
    Series title Texte / Umweltbundesamt ; [20]01,50
    Collection
    Language German
    Size VIII, 88 S. : Ill., graph. Darst.
    Publisher Umweltbundesamt
    Publishing place Berlin
    Publishing country Germany
    Document type Book
    HBZ-ID HT013243710
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    014/121 available for loan (reading room) Freihandmagazin (U1)

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  7. Article: Evaluating and modeling variation in site-level maximum carrying capacity of mixed-species forest stands in the Acadian Region of northeastern North America

    Weiskittel, Aaron R / Kuehne, Christian

    Forestry chronicle. 2019 Dec., v. 95, no. 3

    2019  

    Abstract: Currently no universal approach exists to estimate regional site-level maximum carrying capacity in terms of stand densityindex (SDIMAX) of mixed species stands across contrasting forest ecosystems. Regional research efforts that account forinfluential ... ...

    Abstract Currently no universal approach exists to estimate regional site-level maximum carrying capacity in terms of stand densityindex (SDIMAX) of mixed species stands across contrasting forest ecosystems. Regional research efforts that account forinfluential stand-level variables and species traits are needed to reliably derive SDIMAX under varying environmental conditions and stand characteristics. This study used regionally comprehensive forest inventory data from various permanentsampling efforts to evaluate the effects of contrasting biotic and abiotic stand- and site-level factors on SDIMAX of multiple-species, structurally heterogeneous stands of the climatically diverse Acadian Forest Region of North America. Specifically,we aimed to i) quantify the stand-level maximum size-density line for an array of forest stands found across the study area,irrespective of stand structure; ii) evaluate the relationship between this stand-specific estimate of SDIMAX and various other stand-level attributes; and, iii) develop a generalized SDIMAX prediction model using SDIMAX estimates from objective i) aswell as potential regional drivers of SDIMAX from objective ii). The most influential stand-level factors on SDIMAX were proportion of total stand basal area in hardwood species, basal area weighted mean specific gravity, range in stem diameter, andspecies diversity. Direct climatic variables were not included in our SDIMAX prediction model due to the limited variationexplained, but relationships with elevation and a site quality index based on these climatic variables were. Overall, we con-clude that i) variation in SDIMAX appears to be mostly driven by the softwood to hardwood ratio of the mixed species,structurally complex stands evaluated in our study and ii) the general approach offers a viable framework for estimating sitemaximum carrying capacity at a regional-scale and effectively managing stand density accordingly.
    Keywords carrying capacity ; climatic factors ; forest ecosystems ; forest inventory ; forest stands ; hardwood ; mixed forests ; models ; softwood ; specific gravity ; stand basal area ; stand density ; stand structure ; North America
    Language English
    Dates of publication 2019-12
    Size p. 171-182.
    Publishing place NRC Research Press
    Document type Article
    ZDB-ID 348848-2
    ISSN 0015-7546
    ISSN 0015-7546
    DOI 10.5558/tfc2019-026
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 5733: Show issues

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  8. Book ; Online ; Thesis: Adressierung von Adhäsionsrezeptoren durch synthetische Liganden

    Kühne, Christian [Verfasser]

    2017  

    Author's details Christian Kühne
    Keywords Medizin, Gesundheit ; Medicine, Health
    Subject code sg610
    Language German
    Publisher Freie Universität Berlin
    Publishing place Berlin
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

    Full text online

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  9. Conference proceedings: OP-Müll – weniger ist mehr

    Kühne, Christian / Kleine-Doepke, Veit / Landschoof, Sönke / Kreitz, Nikolaus

    2023  , Page(s) IP14–2244

    Event/congress Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2023); Berlin; ; Berufsverband für Orthopädie und Unfallchirurgie; 2023
    Keywords Medizin, Gesundheit ; Nachhaltigkeilt ; Klimawandel ; Implantate ; Plastikmüll
    Publishing date 2023-10-23
    Publisher German Medical Science GMS Publishing House; Düsseldorf
    Document type Conference proceedings
    DOI 10.3205/23dkou702
    Database German Medical Science

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  10. Article: Does a shift in shade tolerance as suggested by seedling morphology explain differences in regeneration success of northern red oak in native and introduced ranges?

    Nosko, Peter / Moreau, Kerri / Kuehne, Christian / Major, Kelly C. / Bauhus, Jürgen

    Journal of forestry research. 2022 June, v. 33, no. 3

    2022  

    Abstract: Across North America, forests dominated by Quercus rubra L. (northern red oak), a moderately shade-tolerant tree species, are undergoing successional replacement by shade-tolerant competitors. Under closed canopies, Q. rubra seedlings are unable to ... ...

    Abstract Across North America, forests dominated by Quercus rubra L. (northern red oak), a moderately shade-tolerant tree species, are undergoing successional replacement by shade-tolerant competitors. Under closed canopies, Q. rubra seedlings are unable to compete with these shade-tolerant species and do not recruit to upper forest strata. In Europe, natural regeneration of introduced Q. rubra is often successful despite the absence of fire, which promotes regeneration in the native range. Considering that understorey light availability is a major factor affecting recruitment of seedlings, we hypothesized that Q. rubra seedlings are more shade tolerant in the introduced range than in the native range. Morphological traits and biomass allocation patterns of seedlings indicative of shade tolerance were compared for Q. rubra and three co-occurring native species in two closed-canopy forests in the native range (Ontario, Canada) and introduced range (Baden-Württemburg, Germany). In the native range, Q. rubra allocated a greater proportion of biomass to roots, while in the introduced range, growth and allocation patterns favored the development of leaves. Q. rubra seedlings had greater annual increases in height, diameter and biomass in the introduced range. Q. rubra seedlings in the introduced range were also younger; however, they had a mean area per leaf and a total leaf area per seedling that were five times greater than seedlings in the native range. Such differences in morphological traits and allocation patterns support the hypothesis that Q. rubra expresses greater shade tolerance in the introduced range, and that natural regeneration of Q. rubra is not as limited by shade as in the native range. The ability of Q. rubra seedlings to grow faster under closed canopies in Europe may explain the discrepancy in regeneration success of this species in native and introduced ranges. Future research should confirm findings of this study over a greater geographical range in native and introduced ecosystems, and examine the genetic and environmental bases of observed differences in plant traits.
    Keywords Quercus rubra ; biomass ; dry matter partitioning ; forests ; indigenous species ; leaf area ; leaves ; natural regeneration ; research ; seedlings ; shade tolerance ; trees ; understory ; Germany ; Ontario
    Language English
    Dates of publication 2022-06
    Size p. 949-962.
    Publishing place Springer Nature Singapore
    Document type Article
    ZDB-ID 2299615-1
    ISSN 1993-0607 ; 1007-662X
    ISSN (online) 1993-0607
    ISSN 1007-662X
    DOI 10.1007/s11676-021-01397-7
    Database NAL-Catalogue (AGRICOLA)

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