Results 31 to 40 of about 193,768 (263)

Evaluation and assessments of efficiency calibration and resolution of an alpha spectrometry system using standard sources

Radiation Protection and Environment
Studies and evaluations of the detector characteristics of a high-resolution multichamber alpha spectrometer and its calibration using certified mixed standard sources of 239Pu, 241Am, and 244Cm for measuring alpha-emitting radionuclides dedicated to ...
Satyanarayan Bramha, S. Chandrasekaran
doaj   +1 more source

Ketonic bile acids in urine of infants during the neonatal period.

Journal of Lipid Research, 1989
Ketonic bile acids have been found to be quantitatively important in urine of healthy infants during the neonatal period. In order to determine their structures, the bile acids in urine from 11 healthy infants were analyzed by gas-liquid chromatography ...
E Wahlén, B Egestad, B Strandvik, J Sjoóvall   +3 more
doaj   +1 more source

Investigating transcription factor dynamics in health and disease using FRAP

FEBS Letters, EarlyView.
FRAP analysis of GFP‐tagged transcription factors reveals how molecular mobility and target engagement change in response to drug treatment. By combining live‐cell imaging, quantitative model fitting, and statistical analysis, this approach uncovers transcription factor dynamics linked to disease mechanisms, providing a powerful framework for ...
Kannan Govindaraj, Carolina Vazquez Garzon, Jose Joaquin Velasco, Janine N. Post   +3 more
wiley   +1 more source

Identification of bile alcohols in rat bile.

Journal of Lipid Research, 1989
Bile alcohols in rat bile were analyzed by gas-liquid chromatography-mass spectrometry. Six bile alcohols were newly identified as minor constituents in addition to 5 beta-cholestane-3 alpha,7 alpha,12 alpha,26-tetrol, major bile alcohol of rat bile. The
T Hiraoka, T Kohda, D Kosaka, T Yamauchi, K Kihira, T Kuramoto, T Hoshita, G Kajiyama   +7 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

FEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt, Ana‐Maria Sandru, Georg Vucak, Sebastian Didusch, Biljana Riemelmoser, Karin Ehrenreiter, Markus Hartl, Lukas A. Huber, Manuela Baccarini   +8 more
wiley   +1 more source

Up-to-date radiochemical methods for the determination of long-lived radionuclides in the environment

Journal of Analytical Science and Technology, 2011
Radiochemical methods for the determination of long-lived radionuclides have been briefly reviewed. Developments in nuclear measuring techniques such as alpha spectrometry and liquid scintillation counting as well as in chemical separations have been ...
Nóra Vajda
doaj  

Advanced simulation code for alpha spectrometry [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005
A Monte Carlo code, known as AASI, is developed for simulating energy spectra in alpha spectrometry. The code documented here is a comprehensive package where all the major processes affecting the spectrum are included. A unique feature of the code is its ability to take into account coincidences between the particles emitted from the source ...
Siiskonen, T., Pollanen, R.
openaire   +2 more sources

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Comparative analysis of inductively coupled plasma mass spectrometry and alpha spectrometry methods to measure plutonium activity in biosubstrates

Радиационная гигиена
Currently, the most common methods to measure the activity of transuranium elements in biological samples are alpha radiometry and alpha spectrometry. Of these, alpha spectrometry is the most sensitive and selective method.
V. R. Batalov, M. V. Ishunina, A. V. Efimov, A. B. Sokolova   +3 more
doaj   +1 more source

A new family of very long chain alpha,omega-dicarboxylic acids is a major structural fatty acyl component of the membrane lipids of Thermoanaerobacter ethanolicus 39E.

Journal of Lipid Research, 1994
A new family of alpha,omega-dicarboxylic, very long chain fatty acids was isolated and characterized from the lipids of thermophilic anaerobic eubacterium, Thermoanaerobacter ethanolicus 39E. After the isolation of the membrane, the fatty acyl components
S Jung, J G Zeikus, R I Hollingsworth
doaj   +1 more source