Results 61 to 70 of about 7,813,805 (354)

SOVIET-BULGARIAN MILITARY COOPERATION AT THE FINAL STAGE OF THE GREAT PATRIOTIC WAR

open access: yesВестник Брянского государственного университета, 2023
The article reveals the features of Soviet-Bulgarian military cooperation in the last months of the Great Patriotic War. In September 1944, the government of the Fatherland Front came to power in Bulgaria, which broke off relations with Nazi Germany and ...
Kondratenko S.Yu.
doaj   +1 more source

Histories Electromagnetism [PDF]

open access: yesJ.Math.Phys. 45 (2004) 2153-2170, 2003
Working within the HPO (History Projection Operator) Consistent Histories formalism, we follow the work of Savvidou on (scalar) field theory and that of Savvidou and Anastopolous on (first-class) constrained systems to write a histories theory (both classical and quantum) of Electromagnetism.
arxiv   +1 more source

A cellular system to study responses to a collision between the transcription complex and a protein‐bound nick in the DNA template

open access: yesFEBS Letters, EarlyView.
We present the cellular transcription‐coupled Flp‐nick system allowing the introduction of a Top1‐mimicking cleavage complex (Flpcc) at a Flp recognition target site within a controllable LacZ gene. LacZ transcription leads to the collision of RNA polymerase II (RNAPII) with Flpcc, and this causes RNAPII stalling, ubiquitination, and degradation.
Petra Herring   +6 more
wiley   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

About Nikita Ilyich Tolstoy (On the 100th Anniversary of the Birth)

open access: yesСлавянский мир в третьем тысячелетии, 2023
The article is dedicated to the memory of the outstanding scientist, teacher, public figure Academician Nikita Ilyich Tolstoy, great-grandson of Leo Nikolayevich Tolstoy.
Nadirya (Nadezhda) Nizametdinova
doaj   +1 more source

Flow‐based immunomagnetic enrichment of circulating tumor cells from diagnostic leukapheresis product

open access: yesMolecular Oncology, EarlyView.
The number of circulating tumor cells obtained from prostate cancer patients was increased approximately 5‐fold compared to regular CellSearch when processing 2 mL diagnostic leukapheresis material aliquots and increased by 44‐fold when processing 20 mL DLA aliquots using the flow enrichment target capture Halbach‐array.
Michiel Stevens   +8 more
wiley   +1 more source

Single pilot IFR program overview and status [PDF]

open access: yes, 1983
The history of the General Aviation Single Pilot IFR research program at NASA LaRC was discussed in general terms. The program objective, justification, and technical approach were given. The facilities used to conduct the research were discussed briefly.
Shaughnessy, J. D.
core   +1 more source

Quantum-Mechanical Histories and the Uncertainty Principle: I.Information-Theoretic Inequalities [PDF]

open access: yesPhys.Rev. D48 (1993) 2739-2752, 1993
This paper is generally concerned with understanding how the uncertainty principle arises in formulations of quantum mechanics, such as the decoherent histories approach, whose central goal is the assignment of probabilities to histories. We first consider histories characterized by position or momentum projections at two moments of time.
arxiv   +1 more source

Identification of functional and diverse circulating cancer‐associated fibroblasts in metastatic castration‐naïve prostate cancer patients

open access: yesMolecular Oncology, EarlyView.
Cancer‐associated fibroblasts (CAFs) promote cancer growth, invasion (metastasis), and drug resistance. Here, we identified functional and diverse circulating CAFs (cCAFs) in patients with metastatic prostate cancer (mPCa). cCAFs were found in higher numbers and were functional and diverse in mPCa patients versus healthy individuals, suggesting their ...
Richell Booijink   +6 more
wiley   +1 more source

Controversies in the History of the Radiation Reaction problem in General Relativity [PDF]

open access: yes, 1997
This paper examines the historical controversy over whether gravitationally bound systems, such as binary stars, experienced orbital damping due to the emission of gravitational radiation, focusing especially on the period of the 1950s, but also ...
Kennefick, Daniel
core   +3 more sources

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