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pro vyhledávání: '"Andrew W. Kramer"'
Autor:
Andrew W. Kramer, Maria Bautista
Publikováno v:
Respiratory Medicine Case Reports, Vol 28, Iss , Pp - (2019)
Background and aims: Pneumothoraces can occur in patients of all ages and genders. We encountered a female adolescent patient who was experiencing recurrent pneumothoraces every several months. She endured an extensive workup to determine an etiology
Externí odkaz:
https://doaj.org/article/34ed4be38087452eaa1f2ebcd2806384
Publikováno v:
European Journal of Soil Science. 53:541-552
Summary The rate at which available nitrogen (N) is released from organic materials in soil is often measured by applying 15N and following its recovery by the growing crop. However, the turnover of labelled N in soil modifies the ratio of labelled t
Publikováno v:
Soil Biology and Biochemistry. 34:43-50
Cropping systems receiving organic N additions may sequester more N than conventional systems receiving inorganic N inputs. A short-term study using 15N-labeled vetch (Vicia spp.) and 15N urea was conducted to determine whether 9 years of organic N i