Results 21 to 30 of about 1,351,053 (217)

High-resolution low-dose scanning transmission electron microscopy

, 2010
During the past two decades instrumentation in scanning transmission electron microscopy (STEM) has pushed toward higher intensity electron probes to increase the signal-to-noise ratio of recorded images.
Stahlberg, Henning, Gipson, Bryant, Ramasse, Quentin, Buban, James P., Browning, Nigel D.   +4 more
core   +1 more source

The estimation of D-region electron densities from riometer data [PDF]

, 2003
International audienceAt high latitude the hard electron precipitation associated with auroral activity is a major source of ionization for the D-region, one consequence being the absorption of radio waves.
M. Friedrich, Hargreaves, J. K., J. K. Hargreaves, Friedrich, M.   +3 more
core   +1 more source

Electron–Atom, Electron–Ion, and Electron–Molecule Collisions

, 2023
This chapter summarizes the theory of electron collisions with atoms, ions, and molecules. Section 49.1 discusses elastic, inelastic, and ionizing collisions with atoms and atomic ions from close to threshold to high energies where the Born series ...
Bartschat, K, Burke, P, Tennyson, J
core   +1 more source

The electron energy distribution during HF pumping, a picture painted with all colors [PDF]

, 2005
International audienceThe shape of the electron energy distribution has long been a central question in the field of high-frequency radio-induced optical emission experiments.
Rietveld, Michael T., Kosch, M.J., H. Holma, Aso, T., Grydeland, T., K. Kaila, P. Gallop, Gustavsson, B., Leyser, T.B., M. T. Rietveld, B. Isham, B. U. E. Brändström, Kaila, K., J. Jussila, Å. Steen, Steen, Å., Leyser, T. B., LaHoz, C., T. B. Leyser, Grydeland, Tom, Isham, B., Brändström, B.U.E., C. LaHoz, M. Ejiri, Sergienko, T., Rietveld, M. T., Ejiri, M., B. Gustavsson, Kosch, M. J., Gallop, P., M. J. Kosch, T. Aso, Brändström, B. U. E., La Hoz, Cesar, Jussila, J., Holma, H., T. Grydeland, T. Sergienko   +37 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

A self-rectifying HfO x-based unipolar RRAM with Nisi electrode

, 2012
10.1109/LED.2011.2181971IEEE Electron Device Letters334585 ...
Kang, J.F., Zhu, W. G., Yeo, Y.C., Tran, Xuan Anh, Liu, W.J., Gao, B., Nguyen, B. Y., Kang, J. F., Gao, Bin, Yeo, Y. C., Wang, Z.R., Tran, X.A., Yu, H.Y., Tran, X. A., Yu, H. Y., Nguyen, B.Y., Liu, W. J., Wang, Z. R., Li, M.F., Li, M. F., Yu, Hongyu, Zhu, W.G., Fang, Z.   +22 more
core   +1 more source

Single particle electron microscopy [PDF]

, 2009
Electron microscopy (EM) in combination with image analysis is a powerful technique to study protein structures at low, medium, and high resolution. Since electron micrographs of biological objects are very noisy, improvement of the signal-to-noise ratio
Roman Kouřil, Mihaela Folea, Folea, Mihaela, Folea, Mihaela,, Egbert J. Boekema, Kouřil, Roman,, Boekema, Egbert J., Kouril, Roman, Boekema, Egbert J.,   +8 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source