Results 81 to 90 of about 4,300 (261)

Evolution of complex RNA polymerases: the complete archaeal RNA polymerase structure.

PLoS Biology, 2009
The archaeal RNA polymerase (RNAP) shares structural similarities with eukaryotic RNAP II but requires a reduced subset of general transcription factors for promoter-dependent initiation.
Yakov Korkhin, Ulug M Unligil, Otis Littlefield, Pamlea J Nelson, David I Stuart, Paul B Sigler, Stephen D Bell, Nicola G A Abrescia   +7 more
doaj   +1 more source

Double Helix Diffusion for Cross-Domain Anomaly Image Generation

CoRR
Visual anomaly inspection is critical in manufacturing, yet hampered by the scarcity of real anomaly samples for training robust detectors. Synthetic data generation presents a viable strategy for data augmentation; however, current methods remain constrained by two principal limitations: 1) the generation of anomalies that are structurally ...
Linchun Wu, Qin Zou 0001, Xianbiao Qi, Bo Du 0001, Zhongyuan Wang 0001, Qingquan Li 0001   +5 more
openaire   +2 more sources

Integration of Serum Neurofilament Light Chain and Cortical Dysfunction Improves Diagnostic Accuracy in ALS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether integration of serum neurofilament light chain (NfL) and cortical dysfunction improves diagnostic accuracy in amyotrophic lateral sclerosis (ALS) when applied alongside the Gold Coast criteria (GCC). Methods In this prospective study, 148 participants with suspected ALS were recruited (101 ALS and 47 with ALS ...
Aicee Dawn Calma, Nathan Pavey, Yukiko Tsuji, Amirul Ab Ghapar, Mehdi A.J. van den Bos, Bronwen Orden, Grace Lee, Linda Mekhael, Julie Ryder, Cláudia Santos Silva, David McDonald, Fakhria Kakar, Con Yiannikas, Matthew C. Kiernan, David A. Brown, Parvathi Menon, Steve Vucic   +16 more
wiley   +1 more source

Artificial Intelligence–Based Online Symptom Assessment Tools for Systemic Lupus Erythematosus Diagnosis: Patient Perspectives

Arthritis Care &Research, EarlyView.
Objective The objective of this article is to identify perceptions of patients with systemic lupus erythematosus (SLE) regarding artificial intelligence (AI)–based online symptom assessment tools, and the potential of these tools to address diagnostic barriers.
Olivia A. Stein, Jennifer L. F. Lee, Evelyne Vinet, Arielle Mendel, Christian A. Pineau, Fares Kalache, Louis‐Pierre Grenier, Sasha Bernatsky   +7 more
wiley   +1 more source

Relations between a Dual Unit Vector and Frenet Vectors of a Dual Curve

Kuwait Journal of Science, 2016
In this paper, we generalize the notions of helix and slant helix in dual space in a more general case such as the dual angle between a fixed dual unit vector and Frenet vectors of a dual curve is not constant.
Burak Şahiner, Mehmet Önder
doaj  

Investigating helix-helix interactions in the transmembrane domains of membrane proteins [PDF]

Helix-helix interactions between membrane-spanning transmembrane (TM) domains have been shown to drive the assembly of α-helical membrane proteins within biological membranes.
King, Gavin W.
core  

The swimming of a deforming helix. [PDF]

, 2018
Many microorganisms and artificial microswimmers use helical appendages in order to generate locomotion. Though often rotated so as to produce thrust, some species of bacteria such Spiroplasma, Rhodobacter sphaeroides and Spirochetes induce movement by ...
Mourran, Ahmed, Koens, Lyndon, Moeller, Martin, Zhang, Hang, Lauga, Eric   +4 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Comparative Analysis of Visual and Anatomical Outcomes of Drainage Retinotomy: LASER Alone Versus LASER with Amniotic Membrane Graft

Proceedings
Background: Rhegmatogenous retinal detachment (RRD) is a vision-threatening condition that requires timely surgical intervention to prevent permanent visual loss.
Hussain Ahmad Khaqan, Hafiz Atteq Ur Rehman, Hasnain Muhammad Baksh, Ahmad Fauzan, Muhammad Zafar Iqbal, Neeta Maheshwary, Dilshad Hussain, Athar Khan   +7 more
doaj