Search Results - (Author, Cooperation:D. Janzen)

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  1. 1
    W. F. Laurance ; D. C. Useche ; J. Rendeiro ; M. Kalka ; C. J. Bradshaw ; S. P. Sloan ; S. G. Laurance ; M. Campbell ; K. Abernethy ; P. Alvarez ; V. Arroyo-Rodriguez ; P. Ashton ; J. Benitez-Malvido ; A. Blom ; K. S. Bobo ; C. H. Cannon ; M. Cao ; R. Carroll ; C. Chapman ; R. Coates ; M. Cords ; F. Danielsen ; B. De Dijn ; E. Dinerstein ; M. A. Donnelly ; D. Edwards ; F. Edwards ; N. Farwig ; P. Fashing ; P. M. Forget ; M. Foster ; G. Gale ; D. Harris ; R. Harrison ; J. Hart ; S. Karpanty ; W. J. Kress ; J. Krishnaswamy ; W. Logsdon ; J. Lovett ; W. Magnusson ; F. Maisels ; A. R. Marshall ; D. McClearn ; D. Mudappa ; M. R. Nielsen ; R. Pearson ; N. Pitman ; J. van der Ploeg ; A. Plumptre ; J. Poulsen ; M. Quesada ; H. Rainey ; D. Robinson ; C. Roetgers ; F. Rovero ; F. Scatena ; C. Schulze ; D. Sheil ; T. Struhsaker ; J. Terborgh ; D. Thomas ; R. Timm ; J. N. Urbina-Cardona ; K. Vasudevan ; S. J. Wright ; G. J. Arias ; L. Arroyo ; M. Ashton ; P. Auzel ; D. Babaasa ; F. Babweteera ; P. Baker ; O. Banki ; M. Bass ; I. Bila-Isia ; S. Blake ; W. Brockelman ; N. Brokaw ; C. A. Bruhl ; S. Bunyavejchewin ; J. T. Chao ; J. Chave ; R. Chellam ; C. J. Clark ; J. Clavijo ; R. Congdon ; R. Corlett ; H. S. Dattaraja ; C. Dave ; G. Davies ; M. Beisiegel Bde ; N. da Silva Rde ; A. Di Fiore ; A. Diesmos ; R. Dirzo ; D. Doran-Sheehy ; M. Eaton ; L. Emmons ; A. Estrada ; C. Ewango ; L. Fedigan ; F. Feer ; B. Fruth ; J. G. Willis ; U. Goodale ; S. Goodman ; J. C. Guix ; P. Guthiga ; W. Haber ; K. Hamer ; I. Herbinger ; J. Hill ; Z. Huang ; I. F. Sun ; K. Ickes ; A. Itoh ; N. Ivanauskas ; B. Jackes ; J. Janovec ; D. Janzen ; M. Jiangming ; C. Jin ; T. Jones ; H. Justiniano ; E. Kalko ; A. Kasangaki ; T. Killeen ; H. B. King ; E. Klop ; C. Knott ; I. Kone ; E. Kudavidanage ; J. L. Ribeiro ; J. Lattke ; R. Laval ; R. Lawton ; M. Leal ; M. Leighton ; M. Lentino ; C. Leonel ; J. Lindsell ; L. Ling-Ling ; K. E. Linsenmair ; E. Losos ; A. Lugo ; J. Lwanga ; A. L. Mack ; M. Martins ; W. S. McGraw ; R. McNab ; L. Montag ; J. M. Thompson ; J. Nabe-Nielsen ; M. Nakagawa ; S. Nepal ; M. Norconk ; V. Novotny ; S. O'Donnell ; M. Opiang ; P. Ouboter ; K. Parker ; N. Parthasarathy ; K. Pisciotta ; D. Prawiradilaga ; C. Pringle ; S. Rajathurai ; U. Reichard ; G. Reinartz ; K. Renton ; G. Reynolds ; V. Reynolds ; E. Riley ; M. O. Rodel ; J. Rothman ; P. Round ; S. Sakai ; T. Sanaiotti ; T. Savini ; G. Schaab ; J. Seidensticker ; A. Siaka ; M. R. Silman ; T. B. Smith ; S. S. de Almeida ; N. Sodhi ; C. Stanford ; K. Stewart ; E. Stokes ; K. E. Stoner ; R. Sukumar ; M. Surbeck ; M. Tobler ; T. Tscharntke ; A. Turkalo ; G. Umapathy ; M. van Weerd ; J. V. Rivera ; M. Venkataraman ; L. Venn ; C. Verea ; C. V. de Castilho ; M. Waltert ; B. Wang ; D. Watts ; W. Weber ; P. West ; D. Whitacre ; K. Whitney ; D. Wilkie ; S. Williams ; D. D. Wright ; P. Wright ; L. Xiankai ; P. Yonzon ; F. Zamzani
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-07-27
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Agriculture/statistics & numerical data ; Animals ; *Biodiversity ; Conservation of Natural Resources/*statistics & numerical data ; Data Collection ; Ecology/statistics & numerical data ; Endangered Species/*statistics & numerical data ; Environmental Pollution/adverse effects/statistics & numerical data ; Fires/statistics & numerical data ; Forestry/statistics & numerical data ; Interviews as Topic ; Mining/statistics & numerical data ; Population Growth ; Rain ; Reproducibility of Results ; Research Personnel ; Surveys and Questionnaires ; Temperature ; Trees/*physiology ; *Tropical Climate
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Prieto Garcia, L., Janzen, D., Kanebratt, K. P., Ericsson, H., Lennernäs, H., Lundahl, A.
    The American Society for Pharmacology and Experimental Therapeutics (ASPET)
    Published 2018
    Staff View
    Publication Date:
    2018-09-01
    Publisher:
    The American Society for Pharmacology and Experimental Therapeutics (ASPET)
    Print ISSN:
    0090-9556
    Electronic ISSN:
    1521-009X
    Topics:
    Chemistry and Pharmacology
    Medicine
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
  4. 4
    CLEGG, D. O. ; CONN, E. E. ; JANZEN, D. H.

    [s.l.] : Nature Publishing Group
    Published 1979
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] To determine the fate of this defensive secondary compound in young seedlings, we germinated seeds and monitored the linamarin content of the seedlings for 26 days. While the amount of linamarin per seedling remained constant, the distribution of the glucoside present initially only in the seed ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    0040-4020
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Janzen, D. ; Kurreck, H.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Janzen, D. L. ; Tirman, P. F. J. ; Rabassa, A. E. ; Kumar, S.
    Springer
    Published 1995
    Staff View
    ISSN:
    1432-2161
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Soft-tissue neoplasm ; MRI ; Chondroid lipoma
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  Chondroid lipoma is a recently described benign tumor of adipose origin which, pathologically, mimics myxoid liposarcoma and myxoid chondrosarcoma. This tumor typically presents as a well-defined mass in the superficial tissues of the extremities. In this report, we present the magnetic resonance imaging (MRI) appearances of a pathologically proven chondroid lipoma. To our knowledge, this is the first report of any imaging findings associated with this tumor.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Osteosarcoma ; Scapula ; Radiation-induced sarcoma ; Shoulder magnetic resonance imaging
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  Osteosarcomas arising in irradiated tissues are uncommon but important complications of radiotherapy. Radiation-induced osteosarcomas generally occur 3–30 years after exposure and are most common after radiotherapy for cervical or breast carcinoma. These tumors are usually rapidly growing, extremely painful, and histologically high grade. In this paper, we report two cases of high-grade post-radiation osteosarcoma of the scapula. Despite being almost identical radiologically and pathologically, one case had a typical clinical presentation whereas the second case had two unusual features, being non-painful and arising in a field initially irradiated for bronchogenic carcinoma.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    BELL, E. A. ; JANZEN, D. H.

    [s.l.] : Nature Publishing Group
    Published 1971
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] In mammalian tissues the rate-limiting step in the biosynthesis of 5-HT is the hydroxylation of L-tryptophan and 5-HTP does not accumulate where the enzyme balance favours its decarboxylation rather than its biosynthesis. This particular balance of hydroxylase and decarboxylase activity is not ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Janzen, D. ; Mertz, D. P. ; Scheiffele, E. ; Kühnhold, O.
    Springer
    Published 1977
    Staff View
    ISSN:
    1432-1440
    Keywords:
    Allantoin ; renal excretion ; benzbromarone ; hyperuricemia ; renale Ausscheidung ; Benzbromaron ; Hyperurikämie
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Description / Table of Contents:
    Zusammenfassung Tägliche orale Verabreichung von 100 mg bzw. 300 mg Benzbromaron über 3–6 Tage bewirkt insignifikante Veränderungen der Ausscheidungsraten von Allantoin im 24-h-Harn von normourikämischen und hyperurikämischen Personen. Anhaltspunkte für eine theoretisch unwahrscheinliche enterale Mehrausscheidung von Harnsäure durch Benzbromaron ergeben sich somit nicht. Da zudem Hinweise auf eine direkte Beeinflussung des Purinstoffwechsels fehlen (Sorensen u. Levinson, 1976), ist die hypourikämisierende Wirkung von Benzbromaron ausschließlich urikosurischer Natur.
    Notes:
    Summary Oral administration of benzbromarone at daily doses of 100 mg or 300 mg over a period of 3 or 6 days does not produce a significant change of the excretion rates of allantoin in the 24-h-urines of humans in a normouricemic or hyperuricemic state. Therefore, the theoretically improbable assumption that benzbromarone may induce an increased elimination of uric acid by an enteral pathway cannot be accepted any longer. Failing additional direct effects upon purine metabolic pathways (Sorensen and Levinson, 1976) benzbromarone exerts its hypouricemic action solely by uricosuric properties.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Osteosarcoma ; Parosteal osteosarcoma ; Dedifferentiation ; MRI
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  This report describes a low-grade parosteal osteosarcoma of the ulna with dedifferentiation into high-grade osteosarcoma. The clinical, pathological, and imaging findings are described and discussed.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Telangiectatic osteosarcoma ; Retinoblastoma ; Magnetic resonance imaging ; Bone tumors
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  In this report, we describe the clinical, imaging, and pathologic findings in a case of diaphyseal telangiectatic osteosarcoma arising 23 years after successful treatment of bilateral retinoblastomas. To our knowledge, telangiectatic osteosarcoma occurring as a second tumor in this setting, outside the radiation treatment field, has not been previously reported. The association of the RB-1 gene defect with retinoblastomas and other tumors is discussed. Also, the computed tomography and magnetic resonance imaging findings in telangiectatic osteosarcoma are described and discussed.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Synovial sarcoma ; Peripheral nerve ; MRI ; Soft tissue sarcoma
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  This report describes and discusses the clinical, MRI, and pathologic findings in a case of synovial sarcoma arising within a peripheral nerve. Intraneural origin of synovial sarcoma is very unusual, and the MR imaging appearance of this condition has not been previously reported. MR imaging was valuable, as it showed the intraneural location and extent of the tumor, but it did not allow a specific histologic diagnosis.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words MRI ; Telangiectatic osteosarcoma ; Soft tissue ; Fluid-fluid levels
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  Extraskeletal osteosarcomas are rare tumors, and the telangiectatic variety is the least common histological variety in this group. This report describes the clinical and MR imaging findings in two cases arising in the pretibial soft tissues. Both tumors demonstrated marked inhomogeneity with T2-weighted spin echo and STIR sequences. One of the tumors revealed numerous fluid levels within the lesion. A review of the MRI features of these tumors is provided. Osteosarcoma with telangiectatic features should be considered in the differential diagnosis of a soft tissue mass with fluid-fluid levels in patients 40 years of age or older.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Giant cell tumor ; Metastases ; Mediastinum ; CT
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  We report an unusual case of a recurrent giant cell tumor of the patella which presented with metastatic disease to the posterior mediastinal lymph nodes with no evidence of pulmonary metastases. The patient underwent chemotherapy with subsequent successful removal of the mediastinal mass. A review of the reported cases of mediastinal giant cell tumor metastases is provided.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Staff View
    ISSN:
    1432-2161
    Keywords:
    Key words Acetabular dysplasia ; Hip dysplasia ; Centre-edge angle ; 3D computed tomography
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract  Objective. To assess a three-dimensional computed tomography (3DCT) technique for measurement of acetabular coverage in adults. Design. We used 3DCT to define the geometric centre of the femoral head and to measure centre-edge angles (CEAs) at 10° rotational increments around the acetabular rim. The means, ranges, standard deviations and 95% confidence intervals for the CEAs at the various rotational increments were determined. Inter- and intra-observer variability was measured. The normal values are compared with two example cases of acetabular dysplasia. Patients. The normal hips of 15 subjects aged 19–49 years (mean 34.2 years) were measured. Results. The 3DCT measurements are reproducible (mean difference inter-observer, 1.7°–7.9°; mean difference intra-observer, 0.6°–6.9°). Mean normal CEA at the lateral rim was 33° with a 95% confidence interval of 23°–43°. Mean normal CEAs at 10° rotational increments from anterior to posterior rim were determined, and graphed as a ’normal curve’. Conclusion. This new 3DCT method of assessing acetabular dysplasia is simple, reproducible, and applicable to diagnosis, quantification and surgical planning for adult acetabular dysplasia patients.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Rosenthal, G. A. ; Janzen, D. H.
    Springer
    Published 1983
    Staff View
    ISSN:
    1573-1561
    Keywords:
    Canavanine ; Caryedes brasiliensis ; Coleoptera ; Bruchidae ; Dioclea megacarpa ; plant-insect interactions ; amino acids
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Chemistry and Pharmacology
    Notes:
    Abstract Larvae of the bruchid beetle,Caryedes brasiliensis (Bruchidae) have the ability to avoid significant incorporation ofl-canavanine, the guanidinooxy structural analog ofl-arginine, into de novo synthesized proteins. This ability is related to a highly discriminatory protein-synthesizing system which exhibits marked ability to avoid processing an array of nonprotein amino acids structurally related to arginine.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses