Zobrazeno 1 - 10
of 2 140
pro vyhledávání: '"M. Helfrich"'
Publikováno v:
SOIL, Vol 7, Pp 347-362 (2021)
Geogenic organic carbon (GOC) from sedimentary rocks is an overlooked fraction in soils that has not yet been quantified but influences the composition, age, and stability of total organic carbon (OC) in soils. In this context, GOC is the OC in bedro
Externí odkaz:
https://doaj.org/article/c55beae86e4d43dba200ae45286c56dc
Autor:
P. Wordell-Dietrich, A. Wotte, J. Rethemeyer, J. Bachmann, M. Helfrich, K. Kirfel, C. Leuschner, A. Don
Publikováno v:
Biogeosciences, Vol 17, Pp 6341-6356 (2020)
Large amounts of total organic carbon are temporarily stored in soils, which makes soil respiration one of the major sources of terrestrial CO2 fluxes within the global carbon cycle. More than half of global soil organic carbon (SOC) is stored in sub
Externí odkaz:
https://doaj.org/article/a3ba88f224454cf3ae82ce2f931fdfc7
Autor:
Ning Li, Anuradha Kalyanasundaram, Brian J. Hansen, Esthela J. Artiga, Roshan Sharma, Suhaib H. Abudulwahed, Katelynn M. Helfrich, Galina Rozenberg, Pei-Jung Wu, Stanislav Zakharkin, Sandor Gyorke, Paul ML. Janssen, Bryan A. Whitson, Nahush A. Mokadam, Brandon J. Biesiadecki, Federica Accornero, John D. Hummel, Peter J. Mohler, Halina Dobrzynski, Jichao Zhao, Vadim V. Fedorov
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-15 (2020)
The role of of voltage-gated sodium channels (Nav) in pacemaking and conduction of the human sinoatrial node is unclear. Here, the authors investigate existence and function of neuronal and cardiac Nav in human sinoatrial nodes, and demonstrate their
Externí odkaz:
https://doaj.org/article/f630452532e74b488261b252cd5af083
Autor:
Brian J. Hansen, Jichao Zhao, Katelynn M. Helfrich, Ning Li, Alexander Iancau, Alexander M. Zolotarev, Stanislav O. Zakharkin, Anuradha Kalyanasundaram, Megan Subr, Nawshin Dastagir, Roshan Sharma, Esthela J. Artiga, Nicholas Salgia, Mustafa M. Houmsse, Omar Kahaly, Paul M. L. Janssen, Peter J. Mohler, Nahush A. Mokadam, Bryan A. Whitson, Muhammad R. Afzal, Orlando P. Simonetti, John D. Hummel, Vadim V. Fedorov
Publikováno v:
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, Vol 9, Iss 19 (2020)
Background Atrial fibrillation (AF) driver mechanisms are obscured to clinical multielectrode mapping approaches that provide partial, surface‐only visualization of unstable 3‐dimensional atrial conduction. We hypothesized that transient modulati
Externí odkaz:
https://doaj.org/article/8f6472004e244b198cbef26b3fa05dbc
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Biogeosciences, Vol 12, Iss 21, Pp 6291-6299 (2015)
The mean residence times (MRT) of different compound classes of soil organic matter (SOM) do not match their inherent recalcitrance to decomposition. One reason for this is the stabilization within the soil matrix, but recycling, i.e. the reuse of "o
Externí odkaz:
https://doaj.org/article/1921e5c27fc546dd90e5f8a55b9e2ff5
Publikováno v:
Biogeosciences, Vol 12, Iss 20, Pp 5929-5940 (2015)
Independent of its chemical structure carbon (C) persists in soil for several decades, controlled by stabilization and recycling. To disentangle the importance of the two factors on the turnover dynamics of soil sugars, an important compound of soil
Externí odkaz:
https://doaj.org/article/aac471858d6b4e7582f6e28fe9d82145
Publikováno v:
SOIL, Vol 1, Iss 1, Pp 475-489 (2015)
Leaching of nutrients from agricultural soils causes major environmental problems that may be reduced with amendments of chars derived from pyrolysis (pyrochars) or hydrothermal carbonization (hydrochars). Chars are characterized by a high adsorption
Externí odkaz:
https://doaj.org/article/0f00cb1f0522404eabb08229a3aaf739
Autor:
Alison M Helfrich, Michael Rajnik, Cecilia P. Mikita, Joseph W. May, Jennifer C Geracht, Blake T Cirks, Olcay Y Jones
Publikováno v:
Military Medicine
The novel human coronavirus of 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has quickly swept throughout the entire world. As the ongoing pandemic has spread, recent studies have described children presenting with a multisystem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::575d76776f8a64556f70c1d46dbae4ee
https://doi.org/10.1093/milmed/usaa508
https://doi.org/10.1093/milmed/usaa508
Autor:
Avram H. Derrow, Alison M. Helfrich
Publikováno v:
Pediatrics In Review. 41:416-418
1. Avram H. Derrow, MD* 2. Alison M. Helfrich, DO* 1. *Pediatric Clinic, 52nd Medical Operations Squadron, 52nd Medical Group, Spangdahlem Air Base, Germany A previously healthy 13-year-old girl presents to her pediatrician’s office for symptoms of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::844e17366df5801b5b43cbb214f7bdf0
https://doi.org/10.1542/pir.2018-0199
https://doi.org/10.1542/pir.2018-0199