Results 111 to 120 of about 4,781,571 (231)

Stalk and Weed Cutter.

, 1886
Patent for a new and improved stalk cutter for plows. This design "consist[s] of the beam having rearwardly, downwardly, and forwardly curved standard, the arrow-point, having the stem or shank formed entire or open at its bottom, rear side, and top to ...
Faires, Joseph J.
core  

Demonstration : Hot wire cutter

, 1962
Display of lever-action cutter that allows firefighter to cut dangerous wires from a safer ...

core   +1 more source

Rotary cutting tests and rock-breaking characteristics of triple-ridged PDC cutters in tight hard sandstones from Xujiahe Formation in Sichuan Basin in China. [PDF]

Sci Rep
He W, Li X, Zhang Z, Shi H, Chen H, Ma Q, Huang Z, Xiong C, Dong J, Li Y.   +9 more
europepmc   +1 more source

Melanin's Role in Balancing Mechanical Strength and Reproductive Output in Environmentally Stressed Fungal Spores

Advanced Functional Materials, EarlyView.
Melanin content directly controls fungal spore mechanical properties, with pigmented spores achieving rupture forces two orders of magnitude higher than hyaline spores. Environmental stress drives this quantity‐quality tradeoff; stressed species invest energy in melanin‐reinforced, mechanically superior thick‐walled, super‐hydrophobic spores, while ...
Atul Agrawal, Steven E. Naleway
wiley   +1 more source

Investigation of Scribing Parameters' Influence on the Tomography and Crack Initiation of OLED Display Panels for Circular Structures. [PDF]

Micromachines (Basel)
Kong H, Zhu X, Li G, Liu Y.
europepmc   +1 more source

High‐Efficiency Deep Blue Single‐Gaussian Europium(II) Emitters and Their Emitter‐Host Interactions

Advanced Functional Materials, EarlyView.
Crown‐ether ligands and carborate anions enable vacuum‐processable Eu(II) emitters with efficient single‐Gaussian deep‐blue luminescence. Combined photophysical and computational analyses reveal that excited‐electron confinement and steric shielding of the europium center jointly govern compatibility with OLED host materials, establishing molecular ...
Mahmoud Soleimani, Paulius Imbrasas, Jan‐Michael Mewes, Felix Kaden, Stephanie Anna Buchholtz, Karl Leo, Sebastian Schellhammer, Carsten Rothe, Sebastian Reineke   +8 more
wiley   +1 more source

Buttonhole cutter

Hand-made t-shaped steel buttonhole cutter with curved bars at top; file marks are still ...

core  

Geometry and Simulation of the Generation of Cylindrical Gears by an Imaginary Disc Cutter

, 2014
[[abstract]]This paper proposed a method of representing the geometry of an imaginary disc cutter in parameter form. The undercutting condition of the imaginary disc cutter is studied, and the mathematical model of the generated gears is developed by the
Yang, Shyue-Cheng; Liang, Tsang-Lang
core  

Numerical and experimental investigations on the rock-cutting mechanism of cylindrical PDC cutters and the influence of key parameters on cutting efficiency. [PDF]

Sci Rep
Xue D, Liao X, Zhang H, Wu H.
europepmc   +1 more source

An Integrated Oxygen‐Supplying Device and Predictive Multiphysics Model for Extended Ambient Transport of Insulin‐Producing Cells

Advanced Functional Materials, EarlyView.
Cell therapies typically rely on cold‐chain logistics and cryopreservation, limiting access and compromising cell quality. Here, a dual‐chamber device separates an oxygen‐supplying chamber from a hyaluronic acid cargo chamber, sustaining oxygen delivery for over 70 h and enabling ambient‐temperature shipment.
Daniel A. Domingo‐Lopez, Ruth Tarpey, Benjamin Brennan, Bryan D. Boyle, Amir M. Alsharabasy, Abhik Mallick, Gabriella Bellavia, Abhay Pandit, Garry P. Duffy, Ruth E. Levey   +9 more
wiley   +1 more source