Results 61 to 70 of about 16,140,327 (331)

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

PDDD-Net: Defect Detection Network Based on Parallel Attention Mechanism and Dual-Channel Spatial Pyramid Pooling

IEEE Access, 2023
Owing to the small size of the defect pixel area and poor defect-background contrast issues in industrial images, noise and missed detection can easily occur. Therefore, automated defect detection is both necessary and challenging.
Tingting Sui, Junwen Wang
doaj   +1 more source

Reconstructions of small scalp defects with step flap

Journal of Cutaneous and Aesthetic Surgery, 2017
Defects of the scalp arise from several aetiologies including trauma, burn, injury, infection, radiation and surgical excision of tumours. Multiple options for reconstruction of scalp defects exist that included primary closure, skin grafts, local flaps, regional and distal free flaps.This was a prospective case-series study, which was carried out in ...
Ebrahimi, Ali, Nejadsarvari, Nasrin, Ebrahimi, Azin   +2 more
openaire   +2 more sources

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Detection method of small size defects on pipeline weld surface based on improved YOLOv7.

PLoS ONE
The background of pipeline weld surface defect image is complex, and the defect size is small. Aiming at the small defect size in the weld image, which is easy to cause missed detection and false detection, a lightweight target detection algorithm based ...
Xiangqian Xu, Wenting Hou, Xing Li
doaj   +1 more source

Tension pneumocephalus: an extremely small defect leading to an extremely serious problem.

American Journal of Otolaryngology, 2013
BACKGROUND Pneumocephalus is a pathology characterized by air influx into the intracranial region. It may occur after head trauma and rarely after endoscopic sinus surgery. As the amount of air increases, this can cause neurological disorders with a mass
F. Aksoy, R. Doğan, O. Ozturan, S. Tugrul, Y. Yildirim   +4 more
semanticscholar   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

FEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise, Tiziano Mazza, Raffaella Scanga, Lara Console, Michele Galluccio, Cesare Indiveri   +5 more
wiley   +1 more source

Enhancing grid reliability through advanced insulator defect identification.

PLoS ONE
The article presents an innovative approach for detecting defects in insulators used in high-voltage power transmission lines, employing an enhanced Detection Transformer (DETR) model, termed IF-DETR.
Xiao Wang, Ting Yang, Yuntao Zou
doaj   +1 more source

Lightweight Detection Method of Wheelset Tread Defects Based on Improved YOLOv7

Applied Sciences
Accurate online inspection of train wheelset tread defects is challenging owing to the variety and position uncertainty of defects. This study develops an improved YOLOv7 model capable of inspecting various wheelset tread defects with high accuracy and ...
Peng Yang, Fan Gao, Xinwen Yang, Caidong Wang, Hongjun Yang, Zhifeng Zhang   +5 more
doaj   +1 more source

Reconstruction of Small Nasal Defects

Seminars in Plastic Surgery
AbstractThe nose maintains a central importance in both functional and aesthetic human anatomy. With such importance comes numerous possible defects with equally plentiful techniques available for repair. One of the most common causes for nasal reconstruction is Mohs micrographic surgery to excise basal and squamous cell carcinomas.
Hollier, Pierce, Parham, Matthew, Layon, Sarah A., Thornton, James F.   +3 more
openaire   +2 more sources