Results 61 to 70 of about 29,707 (308)

Numerical Investigations on Material Flow During Indirect Extrusion of Copper-Clad Aluminum Rods

Frontiers in Materials, 2020
In the extrusion of clad composite materials with different flow stresses are usually used. This causes an inhomogeneous material flow which can induce sleeve or core fracture.
Stefan Kuhnke, Vidal Sanabria, Felix Gensch, Renè Nitschke, Soeren Mueller   +4 more
doaj   +1 more source

Kepler’s Laws and Conic Sections [PDF]

Arnold Mathematical Journal, 2015
The Kepler's law reads as second order ODE \(\ddot{\pmb{\text{r}}} = -k |\pmb{\text{r}}|^{-3} \pmb{\text{r}}\), where \(\pmb{\text{r}}=(x,y)\) is the position of a planet \(P\) in the \(Oxy\)-plane and \(k\) is a coefficient of proportionality in the Newton law \(F=ma\). The author lifts \(P\) on the cone \(r^2=x^2+y^2\) and represents the lifted point
openaire   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Coreceptor and Cytokine Concentrations May Not Explain Differences in Disease Progression Observed in HIV-1 Clade A and D Infected Ugandans [PDF]

, 2011
Background: The use of cellular coreceptors and modulation of cytokine concentrations by HIV to establish a productive infection is well documented. However, it is unknown whether the expression of these proteins affects the course of HIV clade A and D ...
Zampighi Lorenzo M., Schietroma, Cataldo, Wright Edward, Ernest M. Wright, Parkes-Ratanshi, Rosalind, Grosskurth, H., Woodruff Michael, Kaleebu, Pontiano, Cataldo Schietroma, Grant, P, Ernest M, Wright, E, Parkes-Ratanshi, R., Brecha Nicholas C., Van der Paal, L., Woodruff, Michael, Lieve Van der Paal, Kaleebu, P, Brecha, Nicholas C, Zampighi Guido A., Parkes-Ratanshi, R, Wright, Edward, Guido A Zampighi, Ernest M Wright, Susan Mugaba, Grosskurth Heiner, Van der Paal, Lieve, Parkes-Ratanshi Rosalind, Grosskurth, Heiner, Mugaba, Susan, Guido A. Zampighi, Kaleebu Pontiano, Mugaba, S., Wright, Ernest M, van der Paal, L, Van der Paal Lieve, Lorenzo M Zampighi, Edward Wright, Wright Ernest M., Mugaba Susan, Paul Grant, Pontiano Kaleebu, Lorenzo M. Zampighi, Kaleebu, P., Michael Woodruff, Mugaba, S, Zampighi, Lorenzo M, Grant, P., Heiner Grosskurth, Schietroma Cataldo, Rosalind Parkes-Ratanshi, Grosskurth, H, Nicholas C. Brecha, Wright, E., Grant, Paul, Zampighi, Guido A, Grant Paul, Nicholas C Brecha   +57 more
core   +1 more source

Multimodal Soft Surgical Robots Enabled by Eco‐Degradable, Sterilizable Polymers and Transient Electronics

Advanced Functional Materials, EarlyView.
A compostable PGS soft surgical robot with interchangeable modules integrates transient Mo tactile and Si thermal sensors for dual feedback. The device preserves its function after clinical‐grade sterilization, demonstrates stable actuation and cardiac tissue grasping with real‐time in vivo pulsatile monitoring, and biodegrades post‐use with soil‐safe, 
Minseong Chae, Kyung‐Sub Kim, Gyeong‐Seok Hwang, Jun‐Seok Shim, Sung‐Woo Kim, Yong‐Wu Kim, Jieun Han, Jae‐Young Bae, Jae‐Hwan Lee, Minjung Chae, Jooik Jeon, Joo‐Hyeon Park, You‐Jung Park, Ju‐Yong Lee, Sung‐Geun Choi, Min‐Ha Oh, Yong‐Joong Shin, Young‐In Ryu, Ji‐Woo Gu, Seong‐Yu Choi, Jeong‐Yun Sun, Jung Keun Hyun, Myoung‐Ryul Ok, Sang Yup Kim, Edyta Wyszkowska, Ju‐Young Kim, Kang‐Sik Lee, Seung‐Kyun Kang   +27 more
wiley   +1 more source

Determinação de propriedades seccionais na flexão, na torção uniforme e não uniforme de secções de paredes delgadas [PDF]

, 1978
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
Andersson, Volnei
core  

Design of conical transmission line power combiners using tapered line matching sections

, 2008
An axially symmetric power combiner, which utilizes a tapered conical impedance matching network to transform ten 50-Ω inputs to a central coaxial line over the X-band, is presented.
Van Der Walt P.W., De Villiers D.I.L., Meyer P.   +2 more
core   +1 more source

Transfer Printing and Reconfiguration of Soft Electronics Using Digital Microfluidics and Laser Machining

Advanced Functional Materials, EarlyView.
This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen, Chi Cong Nguyen, Tran Bach Dang, Phuoc Thien Phan, Jordan Thorpe, Michael Listyawan, Nhat Minh Doan, Sinuo Zhao, Hongru Chen, Trung Thien Hoang, Mingsheng Xu, Jisheng Han, Thanh Nho Do, Adam Hill, Timothée Mouterde, Hoang‐Phuong Phan   +15 more
wiley   +1 more source

Study on Dual-Stage Amplification Cascaded Piezoelectric Transducer for High-Power Applications

Archives of Acoustics
To reduce the size and enhance the efficiency of cascaded sandwich transducers with conical horns, a novel structural configuration of such transducers is investigated.
Guo Li, Peiyu Tan, Ruihui Ma, Feilong Li, Xiaoli Zhang, Hua Tian   +5 more
doaj   +1 more source

Conformal Metallosaccharide Hybrid Films for Protecting Wood Surfaces From Environmental Damage

Advanced Functional Materials, EarlyView.
Ti‐ribose hybrid films fabricated by molecular layer deposition form a conformal and uniform coating on wood surfaces, which provides water repellence, dimensional stability, and resistance to acidic and alkaline environments, while preserving the natural appearance.
Wenwen Wang, Aranzazu Sierra Fernandez, Gabriele Botta, Evgenii Modin, Iva Šarić Janković, Shidong Ji, Junli Liu, Mato Knez   +7 more
wiley   +1 more source