Results 21 to 30 of about 6,806,810 (337)

Electrostrictive Polymers for Mechanical-to-Electrical Energy Harvesting [PDF]

open access: yes, 2016
Research of electrostrictive polymers has generated new opportunities for harvesting energy from the surrounding environment and converting it into usable electrical energy. Piezoelectric ceramic based devices have long been used in energy harvesting for
Coutu, Ronald A., Jr.   +2 more
core   +2 more sources

Boron Monochalcogenides; Stable and Strong Two-Dimensional Wide Band-Gap Semiconductors

open access: yesEnergies, 2018
In this short communication, we conducted first-principles calculations to explore the stability of boron monochalcogenides (BX, X = S, Se or Te), as a new class of two-dimensional (2D) materials.
Bohayra Mortazavi, Timon Rabczuk
doaj   +1 more source

Comparison of the Mechanical Properties of Four-layer Epoxy Composite Reinforced with Natural Jute Fibers and Symmetrical E-glass Synthetic Fibers [PDF]

open access: yes, 2020
Research that produces environmentally friendly products continues to be developing. Research related to the natural fiber jute material and epoxy matrix has done.
Abdullah, H. A. (Hanif)   +5 more
core  

SIFAT PAPAN SEMEN SABUT KELAPA

open access: yesJurnal Penelitian Hasil Hutan (Journal of Forest Products Research), 2017
The report  deals  with  laboratory  tests  on  the properties   of cement board  made  from   coconut husk bonded  with  Portland  cement. The test  includes  board  density,   moisture   content.   thickness reduction due to  and bending strength. The 
Rozak Memed   +2 more
doaj   +1 more source

The Influence of Microstructural Heterogeneity on Mechanical Properties of Friction Stir Welded Joints of T6-Treated Al-Zn-Mg Alloy 7A52

open access: yesMetals, 2018
A high strength Al-Zn-Mg alloy 7A52 with T6 treatment was successfully friction stir welded. The grain structure, dislocations and precipitates in typical regions of the weld joint, including the weld nugget zone (WNZ), thermos-mechanically affected ...
Yang Jia   +4 more
doaj   +1 more source

Physical and combustible properties of briquettes produced from a combination of groundnut shell, rice husk, sawdust and wastepaper using starch as a binder

open access: yesJournal of Applied Sciences and Environmental Management, 2020
This study investigated the use of agro-wastes for the production of briquettes. Briquettes were produced from a combination of groundnut shell, rice husk, sawdust and wastepaper using the 20:70:10, 30:60:10, 40:50:10, 50:40:10, 60:30:10 and 70:20:10 ...
T.D. Akpenpuun   +5 more
doaj   +1 more source

EXOhSPEC collimator mechanical design [PDF]

open access: yes, 2019
The Exoplanet High-Resolution Spectrograph (EXOhSPEC) is a high-resolution spectrograph for the characterisation of exoplanets with the Thai National Telescope.
Ahmad   +5 more
core   +2 more sources

Conducting composite materials from the biopolymer kappa-carrageenan and carbon nanotubes

open access: yesBeilstein Journal of Nanotechnology, 2012
Conducting composite films containing carbon nanotubes (CNTs) were prepared by using the biopolymer kappa-carrageenan (KC) as a dispersant. Rheological studies indicated that 0.5% w/v was the appropriate KC concentration for dispersing CNTs.
Ali Aldalbahi   +3 more
doaj   +1 more source

Recycling Carrot Powder as Mortar for Cement Replacement [PDF]

open access: yesEngineering and Technology Journal, 2015
This study was carried out to investigate the physical and mechanical properties of mortar cement produced from Carrot Powder (CP) . To do this, 4 mortar cement specimens were formed by changing the weight of CP and cement.
Aseel Basim Al-Zubaidi
doaj   +1 more source

METODE PENINGKATAN KETAHANAN RETAK RESIN POLYESTER DENGAN PENAMBAHAN PROSENTASE VINYL ESTER

open access: yesRekayasa Mesin
In previous studies, hybrid crash boxes have been developed because it show better energy absorption characteristics. Circular hybrid crash box combine the advantages of low-density of composite with stable deformation of metal provide a potential energy
Nusyirwan Nusyirwan   +2 more
doaj   +1 more source

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