Quantization of gauge fields, graph polynomials and graph cohomology [PDF]
We review quantization of gauge fields using algebraic properties of 3-regular graphs. We derive the Feynman integrand at n loops for a non-abelian gauge theory quantized in a covariant gauge from scalar integrands for connected 3-regular graphs ...
Kreimer, Dirk +2 more
core +3 more sources
The development of early pioneer neurons in the annelid Malacoceros fuliginosus
Background Nervous system development is an interplay of many processes: the formation of individual neurons, which depends on whole-body and local patterning processes, and the coordinated growth of neurites and synapse formation.
Suman Kumar +3 more
doaj +1 more source
Inhibitors of SARS-CoV entry--identification using an internally-controlled dual envelope pseudovirion assay. [PDF]
Severe acute respiratory syndrome-associated coronavirus (SARS-CoV) emerged as the causal agent of an endemic atypical pneumonia, infecting thousands of people worldwide.
Agudelo, Juliet +10 more
core +1 more source
COVID-19 pandemic has challenged public health systems worldwide, particularly affecting developing countries in Latin America like Ecuador. In this report, we exposed the fundamental role of the Ecuadorian universities to improve COVID-19 surveillance ...
Daniela Santander-Gordon +19 more
doaj +1 more source
Neuronal gene expression in two generations of the marine parasitic worm, Cryptocotyle lingua
Trematodes, or flukes, undergo intricate anatomical and behavioral transformations during their life cycle, yet the functional changes in their nervous system remain poorly understood.
Oleg Tolstenkov +2 more
doaj +1 more source
Species–area relationships in continuous vegetation : evidence from Palaearctic grasslands [PDF]
Aim: Species-area relationships (SARs) are fundamental scaling laws in ecology although their shape is still disputed. At larger areas power laws best represent SARs.
Boch, Steffen +7 more
core +1 more source
Trans-splicing of mRNAs links gene transcription to translational control regulated by mTOR
Background In phylogenetically diverse organisms, the 5′ ends of a subset of mRNAs are trans-spliced with a spliced leader (SL) RNA. The functions of SL trans-splicing, however, remain largely enigmatic.
Gemma B. Danks +6 more
doaj +1 more source
Background Development is largely driven by transitions between transcriptional programs. The initiation of transcription at appropriate sites in the genome is a key component of this and yet few rules governing selection are known.
Gemma B. Danks +3 more
doaj +1 more source
Neurological manifestations and neuro-invasive mechanisms of the severe acute respiratory syndrome coronavirus type 2 [PDF]
Background and purpose Infections with coronaviruses are not always confined to the respiratory tract and various neurological manifestations have been reported.
Boon, Paul +6 more
core +2 more sources
Evolution of CDK1 Paralog Specializations in a Lineage With Fast Developing Planktonic Embryos
The active site of the essential CDK1 kinase is generated by core structural elements, among which the PSTAIRE motif in the critical αC-helix, is universally conserved in the single CDK1 ortholog of all metazoans.
Xiaofei Ma +5 more
doaj +1 more source

