Results 51 to 60 of about 60,621 (302)

Compactifications of conformal gravity

open access: yes, 2005
We study conformal theories of gravity, i.e. those whose action is invariant under the local transformation g_{\mu\nu} -> \omega^2 (x) g_{\mu\nu}.
C. Fefferman   +17 more
core   +2 more sources

Definition: Compensation [PDF]

open access: yesCortex, 2021
Lucy A. Livingston   +2 more
openaire   +4 more sources

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

open access: yesMolecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis   +3 more
wiley   +1 more source

Compensation Duties

open access: yes, 2023
While mitigation and adaptation will help to protect us from climate change, there are harms that are beyond our ability to adapt. Some of these harms, which may have been instigated from historical emissions, plausibly give rise to duties of compensation.
openaire   +3 more sources

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

Closed-Form Critical Conditions of Subharmonic Oscillations for Buck Converters

open access: yes, 2012
A general critical condition of subharmonic oscillation in terms of the loop gain is derived. Many closed-form critical conditions for various control schemes in terms of converter parameters are also derived.
Fang, Chung-Chieh
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Design and Implementation of New Oscillating Power Compensator With Improved Control Method Applied to Single‐Phase Solar Inverter

open access: yesEnergy Science & Engineering
Single‐phase power systems inherently exhibit second‐harmonic power oscillations, which can degrade photovoltaic (PV) system performance by reducing efficiency, shortening panel lifespan, and increasing AC current harmonic distortion.
Mohammad Pichan   +3 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

On the Inconsistency of Fayet-Iliopoulos Terms in Supergravity Theories

open access: yes, 2009
Motivated by recent discussions, we revisit the issue of whether globally supersymmetric theories with non-zero Fayet-Iliopoulos terms may be consistently coupled to supergravity.
A. Van Proeyen   +9 more
core   +1 more source

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