Results 71 to 80 of about 188,154 (204)

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source

An environmental assessment of the John Pennekamp Coral Reef State Park and the Key Largo Coral Reef Marine Sanctuary (Unpublished 1983 Report) [PDF]

, 2002
The Pennekamp Coral Reef State Park was established in 1960 and the Key Largo National Marine Sanctuary in 1975. Field studies, funded by NOAA, were conducted in 1980 - 1981 to determine the state of the coral reefs and surrounding areas in relation to ...
Bello, Maria J., Cantillo, Andriana Y., Voss, Gilbert L., Voss, Nancy A.   +3 more
core  

Hybridization of electron subbands in a double quantum well at quantizing magnetic field

, 1998
We employ magnetocapacitance and far-infrared spectroscopy techniques to study the spectrum of the double-layer electron system in a parabolic quantum well with a narrow tunnel barrier in the centre.
Campman, K. L., Deviatov, E. V., Dolgopolov, V. T., Gossard, A. C., Hartung, M., Hastreiter, F., Shashkin, A. A., Wixforth, A.   +7 more
core   +1 more source

Extreme‐Temperature Resistant, Flexible, and Sensitive Strain Sensor for Aerospace Parachute Deployment

Advanced Materials Technologies, EarlyView.
In this study, we report a resistive‐type strain sensor fabricated using single‐walled CNTs, are used layer using the pray technique to deposit as conductive, and UV‐resin was spin‐coated as a protection layer. The sensor functioned in harsh temperature variation conditions from −50°C to 125°C without deterioration.
Jagan Singh Meena, Lucas Lum Yu Xiang, Dhivya Dharshini Kannan, Chun Fei Siah, Yeow Kheng Lim   +4 more
wiley   +1 more source

Implementacion, Uso e Interpretación del FAN CHART [PDF]

El “Fan Chart” representa la funcion de probabilidades de los valores futuros de una variable, condicional a la informacion conocida en el presente.
Juan Manuel Julio
core  

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

The Osteoblastic Microenvironment Determines the Fate of Breast Cancer Cells Disseminated in the Bone Marrow

Advanced Science, EarlyView.
This study revealed how the osteoblastic microenvironment determines the fate of cancer cells disseminated in bone, with a focus on whether they colonize, reside in quiescence, or reactivate from dormancy. Targeting integrin signaling may offer promising strategies for preventing quiescent cancer cells reactivation and bone colonization.
Hong‐Li Wang, Rui Zhang, Xiao‐Min Yue, Jie Zhou, Yu‐Fan Huang, Rong Meng, Yu‐Li Wang, Xiao‐Qing Li   +7 more
wiley   +1 more source

Seismic prediction of shale oil lithofacies associations based on sedimentary facies patterns: A case study of the shahejie formation in the Huanghekou Sag.

PLoS ONE
The lithofacies play a pivotal role in studying development patterns, reservoir characteristics, and sweet spot predictions of shale oil. Lithofacies classification typically relies on core observations and conventional well logging analyses, whereas ...
He Zhao, Hongliang Wang, Guangyuan Wang, Lin Wan   +3 more
doaj   +1 more source

Mirror Symmetry for Two Parameter Models -- II

, 1994
We describe in detail the space of the two K\"ahler parameters of the Calabi--Yau manifold $\P_4^{(1,1,1,6,9)}[18]$ by exploiting mirror symmetry. The large complex structure limit of the mirror, which corresponds to the classical large radius limit, is ...
Anamaría Font, Aspinwall, Aspinwall, Aspinwall, Aspinwall, Bershadsky, Billera, Blok, Cadavid, Candelas, Candelas, Candelas, Ceresole, David R. Morrison, Dimca, Erdélyi, Font, Greene, Katz, Klemm, Kuranishi, Lerche, Libgober, McDuff, Morrison, Oda, Philip Candelas, sheldon Katz, Sommervoll   +28 more
core   +1 more source

Fan charts around GDP projections based on probit models of downturn risk [PDF]

OECD Economics Department Working Papers, 2018
This paper describes a method for parameterising fan charts around GDP growth forecasts of the major OECD economies as well as the aggregate OECD. The degree of uncertainty – reflecting the overall spread of the fan chart – is based on past forecast errors, but the skew – reflecting whether risks are tilted to the downside – is derived from a probit ...
openaire   +1 more source