Results 121 to 130 of about 3,574 (241)

Double Helix Structure for Stable Flexural Actuation in Soft Robotics

open access: yesAdvanced Intelligent Systems, EarlyView.
This work introduces a double‐helical architecture for soft robotic actuators that enhances twisting resistance, increases output force, and minimizes undesired deformation. Actuators driven by shape‐memory alloy wires exhibit a roughly fivefold higher torsional/flexural stiffness ratio and 50% greater force output.
Louis Plottel   +4 more
wiley   +1 more source

Analysis of Crystallinity and Physical Properties of the Bio-solar Gemstone

open access: yes, 2019
– Bio-solar is one of the natural gemstones found in the province of Aceh in Indonesia. A recent study suggested that this gemstone could be considered as a vesuvianite type of gemstone.
Murzal, M. (Murzal)   +3 more
core  

Silica veins in gaj-lazine locality (Central Serbia) as gemstone

open access: yes, 2014
Gemstone occurrence Gaj-Lazine is located in central Serbia, 3.5 km SE of Stragari. Prevailinggemstone type is opaque chalcedony–jasper and colourless chalcedony. Subordinate crystalline quartz and carbonateminerals are also present.
Kuresevic, Lidja, Devic, Snezana
core   +1 more source

Thailand\u27s Gemstone and Jewelry Export Industry

open access: yes, 1996
Due to the serious problems of unemployment and trade deficit that Thailand is now facing, how the gemstone and jewelry industry, which is highly labor intensive, can rapidly become a major source of foreign exchange is worth studying. This study aims at
Wuttikrai, Pimolpun
core  

Aza‐Büchner–Curtius–Schlotterbeck Reaction Enables Selective Construction of Quaternary Carbon Centers

open access: yesAngewandte Chemie International Edition, EarlyView.
We introduce the Aza‐Büchner–Curtius–Schlotterbeck (ABCS) reaction: A mild, catalyst‐free method for homologating aryl imines. Diverging from the traditional BCS mechanism, the diazo intermediate undergoes selective C─C insertion to form an all‐carbon quaternary center.
Simon O. Angerer   +6 more
wiley   +1 more source

Gemstone Honors Program (Class of 2027)

open access: yes
Supplementary materials created by student teams in the UMD Gemstone Honors Program, a unique multidisciplinary four-year research program for selected undergraduate honors students of all ...
Amber Pierdinock-Weed   +2 more
core   +1 more source

Activation of Metal Complexes With Ultrasound Waves for Targeted Anticancer Therapy

open access: yesAngewandte Chemie International Edition, EarlyView.
Ultrasound enables non‐invasive activation of metal‐based therapeutics deep within tumors. Acoustic cavitation can drive sonodynamic reactive oxygen species generation or mechanochemical metal–ligand bond dissociation, enabling controlled release of bioactive payloads.
Félix Grosjean   +3 more
wiley   +1 more source

Rencana Bisnis Pengolahan dan Penjualan Batu Permata (Gemstone)

open access: yes, 2017
The slow growth of the Indonesia economic condition and the downward trend of gemstone in Indonesia should not become a barrier to enter the Indonesian gemstone industry.
Chandra, Suhadi
core  

Synthesis of Aminocyclopropanes by Redox‐Neutral Aminoalkylation

open access: yesAngewandte Chemie International Edition, EarlyView.
Aminocyclopropane synthesis by hydroaminoalkylation utilizing cheap, readily available starting materials is presented, offering orthogonality to commonly used methods and allowing broad functional‐group tolerance. Solvent‐mediated conditions enable the reaction of a pre‐formed hemiaminal with alkenes and alkynes.
Gwyndaf A. Oliver   +6 more
wiley   +1 more source

Generation and Characterization of an Osteoclastic Cell Model of Gaucher's Bone Disease. [PDF]

open access: yesCalcif Tissue Int
Patiño-Salazar JD   +14 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy