Results 11 to 20 of about 2,054,798 (317)

The arithmetic derivative and Leibniz-additive functions [PDF]

, 2018
An arithmetic function $f$ is Leibniz-additive if there is a completely multiplicative function $h_f$, i.e., $h_f(1)=1$ and $h_f(mn)=h_f(m)h_f(n)$ for all positive integers $m$ and $n$, satisfying $$ f(mn)=f(m)h_f(n)+f(n)h_f(m) $$ for all positive ...
Haukkanen, Pentti, Merikoski, Jorma K., Tossavainen, Timo   +2 more
core   +3 more sources

Computational modelling of strut defects in SLM manufactured lattice structures

Materials & Design, 2019
Addition of manufacturing defects to computational models of 3D-printed lattice structures enable improved simulation accuracy. A computational model of a cellular structure based on finite element method (FEM) analysis, often starts from defect-free ...
Bill Lozanovski, Martin Leary, Phuong Tran, Darpan Shidid, Ma Qian, Peter Choong, Milan Brandt   +6 more
doaj   +1 more source

Corrosion performance of wire arc additively manufactured NAB alloy

npj Materials Degradation, 2023
Nickel–aluminum bronzes (NAB) are vital alloys, known for biofouling resistance, crucial for marine and shipbuilding industries. This study examined corrosion performance of NAB samples fabricated by wire arc additive manufacturing (WAAM) in as-built and
Ayda Shahriari, Dharmendra Chalasani, Babak Shalchi Amirkhiz, Mohsen Mohammadi   +3 more
doaj   +1 more source

3D printed leech-inspired origami dry electrodes for electrophysiology sensing robots

npj Flexible Electronics, 2022
In this study, based on inspiration drawn from origami and the suction mechanism of leeches, a dry electrode is developed for reliable blood pressure (BP) monitoring.
Tae-Ho Kim, Chao Bao, Ziniu Chen, Woo Soo Kim   +3 more
doaj   +1 more source

Multi-Scale Structure and Directional Hydrophobicity of Titanium Alloy Surface Using Electrical Discharge

Micromachines, 2022
Titanium alloys with special macro-micro composite structures of directional hydrophobicity are difficult to prepare due to poor thermal conductivity and good corrosion resistance, inhibiting the wide engineering applications for aerospace, marine ...
Mengjie Wang, Zilong Peng, Chi Li, Junyuan Zhang, Jinyin Wu, Fei Wang, Yinan Li, Hongbo Lan   +7 more
doaj   +1 more source

VITAMIN MARKET: MOSTLY STABLE AND QUIET

Zernovì Produkti ì Kombìkorma
Vitamin prices show mixed trends across key products, with some remaining stable while others experience price fluctuations. As we head into Q2 2025, supply chain adjustments and material shortages continue to impact the market.
Feed Additive Prices
doaj   +1 more source

The inapproximability for the (0,1)-additive number

, 2016
An {\it additive labeling} of a graph $G$ is a function $ \ell :V(G) \rightarrow\mathbb{N}$, such that for every two adjacent vertices $ v $ and $ u$ of $ G $, $ \sum_{w \sim v}\ell(w)\neq \sum_{w \sim u}\ell(w) $ ($ x \sim y $ means that $ x $ is ...
Ahadi, Arash, Dehghan, Ali
core   +2 more sources

Analytical modelling for prediction and prevention of overflow occurrence in wire-based additive manufacturing

Virtual and Physical Prototyping
Increasing deposition rate is essential for higher productivity of additive manufacturing (AM). However, a high deposition rate usually requires high heat input to fully melt the fast-fed material, which could lead to defects due to molten material ...
Alireza M. Haghighi, Jialuo Ding, Yongle Sun, Wojciech Suder, Chong Wang, Paul Poulain, Xin Chen, Stewart Williams   +7 more
doaj   +1 more source

Influence of high heating rates on evolution of oxides on directed laser energy additively fabricated IN718

npj Materials Degradation, 2021
The effect of non-isothermal treatment in oxygen-containing air, via heating rates of 10, 50, and 1000 °C/min until 1000 °C followed by furnace cooling to room temperature on oxides formed on directed laser energy additively fabricated IN718 was studied.
Sangram Mazumder, Mangesh V. Pantawane, Narendra B. Dahotre   +2 more
doaj   +1 more source

Strong Turing Degrees for Additive BSS RAM's [PDF]

, 2013
For the additive real BSS machines using only constants 0 and 1 and order tests we consider the corresponding Turing reducibility and characterize some semi-decidable decision problems over the reals.
Gaßner, Christine
core   +2 more sources