Results 11 to 20 of about 487,533 (193)

Investigating Stoichiometric Controls of Nutrient Recycling in Rivers Using the Threespine Stickleback (<i>Gasterosteus aculeatus</i>). [PDF]

Ecol Evol
We 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

Stable BF₂ Boracycles as Versatile Reagents for Selective Ortho C-H Functionalization. [PDF]

Angew Chem Int Ed Engl
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.
Shinde GH, Babiker J, Mebrahtu M, Prigent A, Foucras G, Aher YN, Noa FMA, Johansson MJ, Košmrlj J, Jansen-van Vuuren RD, Cailly T, Sundén H.   +11 more
europepmc   +2 more sources

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, Corbino O.M., Fermi, Fermi, Fermi Enrico, Guagnini Anna, Holton Gerald, Joliot-Curie Frederic, Karl, Lassman Thomas, Orlando Lucia, Provenzal Giulio, Rasetti Franco, Russo Arturo, SIMONE TURCHETTI, Tension High   +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

A dual isotopic (32P and 18O) incubation study to disentangle mechanisms controlling phosphorus cycling in soils from a climatic gradient (Kohala, Hawaii)

Soil Biology and Biochemistry, 2020
Changes in the isotopic composition of oxygen associated with phosphate can provide information on the impact of phosphatase activity on soil P dynamics, whereas the use of radioactive P delivers information on P fluxes within soil systems.
M. Siegenthaler, F. Tamburini, E. Frossard, O. Chadwick, P. Vitousek, C. Pistocchi, E. Meszaros, J. Helfenstein   +7 more
semanticscholar   +1 more source

A dual isotopic approach using radioactive phosphorus and the isotopic composition of oxygen associated to phosphorus to understand plant reaction to a change in P nutrition

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, Federica Tamburini, Stefano M. Bernasconi, Emmanuel Frossard   +3 more
doaj   +1 more source

Diazirines Beyond Photoaffinity Labeling: A Comprehensive Overview of Applications in Biological Sciences, Materials Chemistry, and NMR‐Spectroscopy

Angewandte Chemie, Volume 138, Issue 4, 22 January 2026.
Diazirines are three‐membered, nitrogen‐containing heterocycles that decompose under light or heat to generate carbenes. For the past two decades, they have served mainly as minimally invasive tags in photoaffinity labeling (PAL). More recently, their value as versatile carbene precursors has been recognized.
Dominik Schnalzer, Viktor Savic, Clemens Cziegler, Michael Schnürch, Marko D. Mihovilovic   +4 more
wiley   +2 more sources

Commissioning Test of a New Production Facility for Radioisotope Phosphorus-32 (32P) : Scale-up and Resin Analysis using Dry Distillation Separation Method

INDONESIAN JOURNAL OF CHEMICAL RESEARCH, 2023
Pengujian fasilitas baru untuk memproduksi radioisotop fosfor-32 (32P) harus memenuhi peraturan dan persyaratan yang berlaku. Uji coba komisioning melibatkan tiga tahap: pengujian sistem aliran udara, pengujian sistem distilasi kering, dan pengujian keamanan fasilitas.
Chaidir Pratama, Ahid Nurmanjaya, Wira Y Rahman, Anung Pujiyanto, Abidin Abidin, Fani Triyatna, Endang Sarmini, Anas Fahmi Imron, Andru Irvanda Yudhantama   +8 more
openaire   +1 more source

Peaceful atoms in agriculture and food : how the politics of the Cold War shaped agricultural research using isotopes and radiation in post war divided Germany [PDF]

, 2015
During the Cold War, the super powers advanced nuclear literacy and access to nuclear resources and technology to a first-class power factor. Both national governments and international organizations developed nuclear programs in a variety of areas and ...
Zachmann, Karin
core   +5 more sources

Hydroxyapatite (Ha) labeling with a phosphorus-32 radioisotope of the TRIGA 2000 reactor irradiation result as a candidate for radiosinovectomy therapy

Journal of Physics: Conference Series, 2020
Abstract Radiosynovectomy is a therapy performed on patients with acute-level arthritis (rheumatoid arthritis) as an alternative solution besides surgery. Radiosynovectomy is performed using a labeled compound with a particle size of 0.5-10 μm labeled with a β radioisotope.
B S Rattyananda, M B Febrian, Y Setiadi, D Setiawan, A Aziz, T S Mulyati, A Suherman   +6 more
openaire   +1 more source