Results 61 to 70 of about 800,089 (361)
The unrolling of the peltate leaves in Syngonium podophyllum is analyzed and quantified (left‐hand side to center). These measurements serve to verify a mathematical model for leaf unrolling based on the model used in Schmidt (2007). An additional formula for obtaining a layer mismatch from a prescribed radius is derived.
Michelle Modert +4 more
wiley +1 more source
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat +6 more
wiley +1 more source
Flexible bellows joint shielding sleeve for propellant transfer ...
Noreen, S. J., Pfleger, R. O.
core +1 more source
U–Pb dating and Sm–Nd isotopic analysis of granitic rocks from the Tiris Complex : new constaints on key events in the evolution of the Reguibat Shield, Mauritania [PDF]
The Reguibat Shield of N Mauritania and W Algeria represents the northern exposure of the West African Craton. As with its counterpart in equatorial West Africa, the Leo Shield, it comprises a western Archaean Domain and an eastern Palaeoproterozoic ...
Abdouloye, T.B. +6 more
core +1 more source
It has often happened, even in the best hands, that the patient has been severely burned, when the ordinary clamp and cautery method has been employed in the operation for piles, causing the surgeon no end of annoyance. To avoid this, I have devised a little instrument that eliminates such accidents; this instrument is small, inexpensive, portable ...
openaire +2 more sources
Development of Aluminum Scandium Alloys for Hydrogen Storage Valves
Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno +4 more
wiley +1 more source
Process for making RF shielded cable connector assemblies and the products formed thereby [PDF]
A process for making RF shielded cable connector assemblies and the resulting structures is described. The process basically consists of potting wires of a shielded cable between the cable shield and a connector housing to fill in, support, regidize, and
Clatterbuck, C. H., Fisher, A.
core +1 more source
When British naval officer James Cook first landed on the continent now known as Australia in April 1770, he was met by warriors of the Gweagal nation whose land he was entering uninvited. The Gweagal were armed with bark shields and wooden spears. Cook fired a musket at them, hitting one. The shield from that first encounter, complete with musket hole,
openaire +2 more sources
Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos +8 more
wiley +1 more source

