Results 151 to 160 of about 140,334 (356)

Multi‐Scale Hybrid Modeling to Predict Cell Culture Process With Metabolic Phase Transitions

open access: yesBiotechnology and Bioengineering, EarlyView.
ABSTRACT To advance understanding of cellular metabolism and reduce batch‐to‐batch variability in cell culture processes, this study introduces a multi‐scale hybrid modeling framework designed to simulate and predict the dynamic behavior of CHO cell cultures undergoing metabolic phase transitions.
Keqi Wang, Sarah W. Harcum, Wei Xie
wiley   +1 more source

Assesing the hydrogeological functioning of an evaporite karst system coupling tritium and physicochemical data [PDF]

open access: yes, 2019
Discharge rate, electrical conductivity and water temperature have been continuously recorded in an evaporite karst spring located in S Spain and 3H determinations of spring water were performed.
Andreo-Navarro, Bartolome   +3 more
core  

Mechanistic elucidation of HFIP‐enabled C–Cl bond activation in the synthesis of tetrahydroquinoline derivatives

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Mechanistic studies reveal that hexafluoroisopropanol (HFIP) enables C–Cl activation of propargylic halides by stabilizing ion pairs and enhancing effective Brønsted acidity. This cooperative solvent effect allows access to cationic intermediates and promotes cascade formation of tetrahydroquinolines through cyclization and disproportionation ...
Seung Hoon Lee, Hyung Min Chi
wiley   +1 more source

Planted tree fallows and their influence on soil fertility and maize production in East Africa [PDF]

open access: yes, 2005
Soil fertility depletion is a main constraint to food production in sub-Saharan Africa. This thesis concerns the potential of N2-fixing trees to increase nitrogen inputs to agroforestry systems and accordingly to improve crop production.
Ståhl, Lena
core  

Thermal Ionization-Isotope Dilution Mass Spectrometry Determination of Ruthenium in Spent Nuclear Fuel

open access: diamond, 2013
Young-Shin Jeon   +4 more
openalex   +1 more source

The influence of rivers on seabird foraging ecology

open access: yesBiological Reviews, EarlyView.
ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais   +2 more
wiley   +1 more source

Determination of Cd, Pb, Zn and Cu in Sediment Compartments by Sequential Extraction and Isotope Dilution Inductively Coupled Plasma Mass Spectrometry (ID-ICP-MS)

open access: yesJournal of the Brazilian Chemical Society, 2002
Trace concentrations of Cd, Cu, Pb and Zn in four different sediment fractions extracted in sequence were determined by isotope dilution inductively coupled mass spectrometry (IDICPMS).
Gardolinski Paulo C. F. C.   +3 more
doaj  

Detection of Trace Amounts of Toxic Metals in Environmental Samples by Laser-excited Atomic Fluorescence Spectrometry [PDF]

open access: yes, 1992
Results for the direct determination of trace amounts of Pb and Cd in Antarctic and Greenland ancient ice and recent snow by laser-excited atomic fluorescence spectrometry (LEAFS) are presented.
Bolshov, Mikhail A.   +5 more
core  

82Se Metabolically-Labeled Yeast as a Matrix-Matched Isotope Dilution Standard for Quantification of Selenomethionine. [PDF]

open access: yesAnal Chem, 2023
LeBlanc KL   +5 more
europepmc   +1 more source

Carbon‐14 Perovskite Betavoltaics Reach Record 10.79% Efficiency

open access: yesCarbon Energy, EarlyView.
A perovskite‐based betavoltaic cell incorporating carbon‐14 nanoparticles and formamidinium lead iodide achieves a record energy conversion efficiency of 10.79%. The device design enhances charge generation through an electron avalanche multiplication mechanism.
Hong Soo Kim   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy