Results 11 to 20 of about 10,250 (188)

Embracing Complexity: Peptides as Tunable Scaffolds in the Construction of Discrete Supramolecular Systems. [PDF]

open access: yesAngew Chem Int Ed Engl
The inherent chirality, tunability, biocompatibility, and robustness of peptides provide an exciting opportunity for supramolecular chemistry. In this mini‐review, we explore uses of peptides in discrete supramolecular systems, how chemists can draw inspiration from larger biological assemblies, and discuss how embracing the complexity of peptide ...
Barber BE   +3 more
europepmc   +3 more sources

Needle-Plug/Piston-Based Modular Mesoscopic Design Paradigm Coupled With Microfluidic Device for Point-of-Care Pooled Testing. [PDF]

open access: yesAdv Sci (Weinh)
This paper introduces a novel modular mesoscopic design with a core “needle‐plug/piston” structure for complex fluidic operations, compatible with diverse microfluidic platforms. Utilizing this design, an ultra‐sensitive nucleic acid detection system is developed for SARS‐CoV‐2, achieving a detection limit of ten copies per mL and facilitating large ...
Lin B   +6 more
europepmc   +2 more sources

Cyclodextrin-Based Pseudocopolymers and Their Biomedical Applications for Drug and Gene Delivery. [PDF]

open access: yesSmall
Host–guest interactions between cyclodextrin (CD) and compatible guest molecules enable the formation of diverse architectures, such as multiblock and linear–star copolymers as well as advanced systems like redox‐responsive nanoparticles. This structural versatility facilitates precise system design, conferring multifunctionality for controlled drug ...
Soh WWM, Li J.
europepmc   +2 more sources

Hollow Axle Ultrasonic Crack Detection for Conventional Railway Vehicles

open access: yesQuarterly Report of RTRI, 2005
An ultrasonic testing technique was studied for a hollow axle with a 30 mm bore diameter manufactured on a trial basis for conventional railway vehicles. To compensate for the decrease in crack detection sensitivity due to the small bore diameter, a piezocomposite focal probe was designed.
Kazunari MAKINO   +3 more
openaire   +2 more sources

Study on the variation law of temperature field in three-roll skew rolling of variable diameter specimen

open access: yesMetalurgija, 2022
This paper takes the simplified high-speed train hollow axle variable diameter section sample as the research object, uses Simufact.Forming simulation software for simulation, analyze the rolling piece inner variable diameter section, equal diameter ...
X. G. Chen, X. D. Shu, J. N. Shi
doaj  

Investigation of the causes of the fracture of the drive shaft of the electric locomotive [PDF]

open access: yesAdvanced Engineering Letters
The paper provides a systematic analysis of the origin, spread, and causes of shaft failure in the four-axle electric locomotive series 441. Based on this analysis, recommendations for preventive diagnostic maintenance are provided to timely identify the
Dušan Golubović, Raul Turmanidze
doaj   +1 more source

Design principes of single-stage rolling mills for machine-building industries

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018
The use of variable profiles in engineering is the most effective way to reduce metal consumption and improve performance, increase the lifetime, reliability of machines and mechanisms, and reduce costs for their production, repair and operation.
V. A. Tamila
doaj   +1 more source

Study on quantitative detection of fatigue cracks for hollow axles on high-speed trains by the total focus method

open access: yes机车电传动, 2022
Among the important components on high-speed trains, hollow axles are detected from the inner bore surface for transverse fatigue cracks on the outer surface by the conventional ultrasonic technique, as a measure to ensure the operation safety of high ...
HUANG Yongcong   +2 more
doaj  

The Twente turbulent Taylor-Couette (T3C) facility: Strongly turbulent (multiphase) flow between two independently rotating cylinders [PDF]

open access: yes, 2011
A new turbulent Taylor-Couette system consisting of two independently rotating cylinders has been constructed. The gap between the cylinders has a height of 0.927 m, an inner radius of 0.200 m, and a variable outer radius (from 0.279 to 0.220 m).
Bruggert, Gert-Wim   +4 more
core   +3 more sources

Design, Fabrication and Testing of Carbon Fiber Reinforced Epoxy Drive Shaft for All Terrain Vehicle using Filament Winding

open access: yesMATEC Web of Conferences, 2018
Filament winding is a composite material fabrication technique that is used to manufacture concentric hollow components. In this study Carbon/Epoxy composite drive shafts were fabricated using filament winding process with a fiber orientation of [852 ...
Yeshwant Nayak Suhas   +5 more
doaj   +1 more source

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