Investigation of the Role of Organic Acids on the Phosphorus and Zinc Uptake by Corn in Calcareous Soils by Using 32P and 65Zn Radioisotopes [PDF]
مجله علوم و فنون هستهای, 2014 To investigate the effect of oxalic and citric organic acids on the uptake of Phosphorus and Zinc by corn (Zea mays L.), an experiment was conducted by the use of radioactive potassium phosphate and zinc sulfate fertilizers in microcosm and greenhouse ...
Sareh Nezami +4 more
doaj +1 more source
Investigating Stoichiometric Controls of Nutrient Recycling in Rivers Using the Threespine Stickleback (<i>Gasterosteus aculeatus</i>). [PDF]
Ecol EvolWe determine how intraspecific phenotypic variation relates to controls on vertebrate nutrient cycling. We used the threespine stickleback as a model, and ecological stoichiometry as a framework. We found a large portion of variation in nitrogen and phosphorus content of stickleback bodies and wastes, and we find a link between vertebrate traits and ...
Rozanski SR, May EM, El-Sabaawi RW.
europepmc +2 more sources
Soil solution phosphorus turnover: derivation, interpretation, and insights from a global compilation of isotope exchange kinetic studies [PDF]
Biogeosciences, 2018 The exchange rate of inorganic phosphorus (P) between the soil solution and solid phase, also known as soil solution P turnover, is essential for describing the kinetics of bioavailable P.
J. Helfenstein +3 more
doaj +1 more source
Radioisotopes as political instruments, 1946-1953 [PDF]
, 2009 The development of nuclear «piles», soon called reactors, in the Manhattan Project provided a new technology for manufacturing radioactive isotopes. Radioisotopes, unstable variants of chemical elements that give off detectable radiation upon decay, were
Creager, Angela N. H.
core +23 more sources
Autoradiography of Pi Distribution in Barley Seedlings
Bio-Protocol, 2014 Phosphorus-32 and Phosphorus-33 are radioisotopes of phosphorus. These isotopes are used to trace ionic phosphorus and phosphorus compounds. This protocol is used to follow the movement of inorganic phosphate (PO43-) from a leaf tip to the rest of the ...
Satomi Kanno +3 more
doaj +1 more source
The invisible businessman: Nuclear physics, patenting practices,and trading activities in the 1930s [PDF]
, 2006 In the 1930s the production of patents for the protection of intellectual rights became central to the research activities of Enrico Fermi and his group, consistently with a research policy emerging within the Italian Fascist Regime.
Cf +15 more
core +1 more source
Auto-atténuation de la radiation β dans les sources radioactives épaisses
CHIMIA, 1961 In measuring β-radioactivity of thick sources, one has to take in account the phenomenon of self-weakening in the source. The present paper shows if the choice of the distance between source and counter on one hand, and of the chemical nature of the ...
Pierre Lerch, A. Vogel-Ludin
doaj +1 more source
Plant Methods, 2017 Background Changing the phosphorus (P) nutrition leads to changes in plant metabolism. The aim of this study was to investigate how these changes are reflected in the distribution of 33P and the isotopic composition of oxygen associated to P (δ18OP) in ...
Verena Pfahler +3 more
doaj +1 more source
Stable BF2 Boracycles as Versatile Reagents for Selective Ortho C–H Functionalization
Angewandte Chemie, EarlyView.We report a robust, metal‐free and scalable synthesis of stable BF2 boracycles via directed ortho CH borylation, delivering isolable, shelf‐stable reagents without chromatographic purification. These BF2 boracycles exhibit unique and tunable reactivity, enabling highly selective ipso‐functionalization across a broad range of transformations.
Ganesh H. Shinde +11 more
wiley +2 more sources