Results 81 to 90 of about 22,985,782 (339)

Ground state and glass transition of the RNA secondary structure

open access: yes, 2006
RNA molecules form a sequence-specific self-pairing pattern at low temperatures. We analyze this problem using a random pairing energy model as well as a random sequence model that includes a base stacking energy in favor of helix propagation.
Bundschuh   +31 more
core   +1 more source

Comparative analysis of VDMOS/LDMOS power transistors for RF amplifiers [PDF]

open access: yes, 2009
A comparison between the RF performance of vertical and lateral power MOSFETs is presented. The role of each parasitic parameter in the assessment of the power gain, 1-dB compression point, efficiency, stability, and output matching is evaluated ...
Chevaux, N., De Souza, M.M.
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Power harvesting in a helicopter lag damper [PDF]

open access: yes, 2011
In this paper a new power harvesting application is developed and simulated. Power harvesting is chosen within the European Clean Sky project as a solution to powering in-blade health monitoring systems as opposed to installing an elaborate electrical ...
Boer, A. de   +3 more
core   +3 more sources

Primordial Power Spectra from Anisotropic Inflation [PDF]

open access: yes, 2010
We examine cosmological perturbations in a dynamical theory of inflation in which an Abelian gauge field couples directly to the inflaton, breaking conformal invariance.
Moira I. Gresham   +2 more
core   +2 more sources

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

open access: yesFEBS 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   +9 more
wiley   +1 more source

Superconducting versus normal conducting cavities

open access: yes, 2013
One of the most important issues of high-power hadron linacs is the choice of technology with respect to superconducting or room-temperature operation.
Podlech, Holger
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Ultrathin Al2O3‐Coated Biomass Carbon for Sodium‐Ion Batteries via a Synergistic Storage Mechanism

open access: yesCarbon Energy
Hard carbon (HC) is a promising anode candidate for sodium‐ion batteries (SIBs), yet its application is plagued by unstable interfaces and poor long‐term cyclability.
Junjun Zhou   +13 more
doaj   +1 more source

Biological Effect from Mobile Phone to Human Head and Brain

open access: yesRMUTL Engineering Journal, 2018
This article describes research entitled the simulation of effect from mobile phone to human head and brain. Based on three variables, they are comprised of electrical properties, averaged mass tissues of human head and brain and frequencies of ...
Piyapat Poungsri   +2 more
doaj   +1 more source

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