Results 51 to 60 of about 6,229 (257)

Geometry of an English Church Bell

Encyclopedia
The axisymmetric geometries of both internal and external profiles of church bells, along with the properties of the bell metal, are of vital importance to their acoustics.
Robert Perrin, Zimu Guo, David Eager, Benjamin Halkon   +3 more
doaj   +1 more source

THE GOLDEN TRIANGLE OF HAPPINESS: ESSENTIAL RESOURCES FOR A HAPPY FAMILY

International Journal of Child, Youth & Family Studies, 2018
It is normal for people to feel positive about the quality of their lives, despite the presence of challenges. Of special interest here are the challenges of caring for a child or a disabled family member.
Robert A. Cummins
doaj   +1 more source

Far‐Infrared Hyperbolic Phonon–Polaritons in Zirconium Disulfide

Advanced Materials, EarlyView.
An unpatterned ZrS2${\rm ZrS}_2$ flake, coupled to far‐field infrared light by metal nanoribbons, reveals hyperbolic phonon polaritons with multiple higher‐order branches and effective refractive indices up to 223. This resonator‐assisted approach establishes ZrS2${\rm ZrS}_2$ as a compact van der Waals platform for deeply subwavelength far‐infrared ...
Subhodip Saha, Ryan Kowalski, Joseph R. Matson, Thomas G. Folland, Tony Low, Joshua D. Caldwell, In‐Ho Lee, Sang‐Hyun Oh   +7 more
wiley   +1 more source

CREATIVE TRAINING REPRESENTED BY THE GOLDEN TRIANGLE PROFESSOR – STUDENT – RESEARCHER [PDF]

Annals: Series on engineering sciences (Academy of Romanian Scientists), 2016
The author highlights the creative training based on the golden triangle in the pedagogical approach: professor-trainer – student – researcher. The individual style of teaching and learning is enhanced by the creative style of the educator-researcher and
Sanda-Marina BĂDULESCU
doaj  

Ali Mazrui

American Journal of Islam and Society, 2016
On the occasion of the passing of Ali Mazrui, Rashied Omar, imam of the Claremont Main Road Mosque in Cape Town, South Africa, invoked probably the most appropriate verse of the Qur’an to memorialize him: “God bears witness that there is no god but Allah,
Ebrahim Rasool
doaj   +1 more source

Reversible Hydration Tuning of Polar Order and Large Nonlinear Optical Response in a 2D van der Waals Crystal, LiInP2S6

Advanced Materials, EarlyView.
Hydration‐induced symmetry breaking transforms layered LiInP2S6${\rm LiInP}_2{\rm S}_6$ from a nonpolar to a chiral‐polar phase, producing a giant enhancement of non‐resonant second‐harmonic generation. The reversible tuning of polar order through molecular intercalation establishes a strategy for dynamically controlling nonlinear optical ...
Jadupati Nag, Saugata Sarker, Michael J. Waters, Safdar Imam, Himirkanti Sarkar, Anthony Richardella, James M. Rondinelli, Mercouri G. Kanatzidis, Venkatraman Gopalan   +8 more
wiley   +1 more source

The source of the gold in Carlin-type gold deposits

Communications Earth & Environment
The source of the gold in Carlin-type deposits has been debated ever since this unusual gold deposit-type was first discovered in the Carlin district of Nevada (USA) more than sixty years ago, with magmatic, metamorphic, sedimentary, and hybrid sources ...
Mingchun Chai, Anthony E. Williams-Jones, Wenchao Su, Cheng Xu, Wei Fu   +4 more
doaj   +1 more source

Escaping the Scaling Relationships in Oxygen Reduction Catalysis: Implications for PEM Fuel Cells

Advanced Materials, EarlyView.
Escaping the scaling relationships of the oxygen reduction reaction is vital for hydrogen fuel cells. This outlook examines how interfacial heterogeneity, spanning the subsurface lattice, chemisorption layer, and near‐interface solvation volume, mechanistically decouples intermediate binding energetics.
Muhammad Bilal Wazir, Lourdes F. Vega, Maryam Khaleel   +2 more
wiley   +1 more source

Soft Skins With Reversible Thickness Morphing: Materials, Mechanisms, and Applications

Advanced Materials, EarlyView.
Evolution of electronic skin (e‐skin) technologies toward adaptive, multifunctional soft skins. Phase I highlights early rigid and discrete sensory interfaces. Phase II shows the transition toward flexible, stretchable, and large‐area e‐skin. Phase III captures the emergence of computational e‐skin.
Oliver Ozioko, Chiamaka Akah, Ravinder Dahiya   +2 more
wiley   +1 more source

Hydrophobic MFI‐Type Zeolites via Alkali‐Cation‐Induced Defect Healing: Implications for Adsorbent and Catalyst Design

Advanced Materials, EarlyView.
Sub‐stoichiometric amounts of Na+ or K+ enhance defect healing during Silicalite‐1 (MFI) and TS‐1 calcination by promoting Si–O–Si annealing and healing framework vacancies. The resulting defect‐free zeolites are more hydrophobic and show improved butanol/water separation and improved activity and selectivity in the epoxidation of 1‐hexene, offering a ...
Christos Kanteler, Pau Ferri, Francisco Javier Escobar‐Bedia, Álvaro Mayoral, Alejandro Vidal‐Moya, Richard Kendra, Chen Lei, Miguel Palomino, Fernando Rey, Lukáš Grajciar, Christopher James Heard, Pedro Serna, Mercedes Boronat, Cristina Martínez, Manuel Moliner   +14 more
wiley   +1 more source