Results 81 to 90 of about 258,334 (337)
A superfície de uma borracha de etileno-propileno-dieno (EPDM) vulcanizada foi modificada via plasma por microondas, com gases Ar, Ar/O2, N2/O2 e N2/H2, tendo como objetivo melhorar as propriedades adesivas da superfície.
Renata P. dos Santos+4 more
doaj +3 more sources
High‐Speed and Scalable Wet Spinning of Graphene/Liquid Crystalline Elastomer Composite Filaments
Polydomain filaments from graphene/liquid crystalline elastomer (LCE) composites are scalably‐manufactured by wet spinning across a wide range of diameters (≈137–1128 µm) at a speed up to 4500 m h−1 through a double diffusion coagulation mechanism, enabling fast actuation and optimized mechanical performance for broad applications.
Antonio Proctor Martinez+5 more
wiley +1 more source
FT-IR microanalysis of mineral separates from primitive meteorites: techniques, problems and solutions [PDF]
From the Introduction: We compared several methods of infrared micro spectroscopy using an FT-IR microscope and workbench. This is part of a project to assemble a database of infrared and optical spectra from mineral separates from meteorites, for ...
Grady, M. M., Jones, G. C., Morlok, A.
core
Identifikasi Kandungan Senyawa Antioksidan Dalam Kayu Secang (Caesalpinia Sappan) [PDF]
Telah diisolasi dua senyawa aktif antioksidan dari kayu secang (Caesalpinia sappan). Isolasi dilakukan melalui beberapa tahap pemisahan menggunakan kromatografi kolom dan kromatografi lapisan tipis.
Yemirta, Y. (Yemirta)
core +2 more sources
Multi‐Scaled Cellulosic Nanonetworks from Tunicates
Microbial and plant nanonetworks of cellulose have enabled a wide range of high‐performance yet sustainable materials. Herein, a third class of cellulosic nanonetworks is showcased by exploiting the only animal tissue‐producing cellulose nanofibers, i.e., ascidians. An ultrastructure including spherical cells and a microvasculature with diameters of 50–
Mano Govindharaj+10 more
wiley +1 more source
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal+10 more
wiley +1 more source
Isorhapontigenin (IRPG) drug emerges as promising efficient inhibitor for H1N1 and H3N2 subtypes which belong to influenza A virus; reported with IC50 value of 35.62 and 63.50 μM respectively.
Sathya Bangaru+3 more
doaj
Evaluation of Turmeric Powder Adulterated with Metanil Yellow Using FT-Raman and FT-IR Spectroscopy
Turmeric powder (Curcuma longa L.) is valued both for its medicinal properties and for its popular culinary use, such as being a component in curry powder.
Sagar Dhakal+5 more
doaj +1 more source
This study demonstrates the use of a low‐cost 3D printing technique to prepare a large‐area PVDF‐FAPbI3 composite dielectric film for flexible TENG application. The δ→α phase transformation of the FAPbI3 nanofillers has significantly improved the β‐phase content, morphology, and dielectric properties of the PVDF film.
Nurfatin Hafizah Zain Karimy+7 more
wiley +1 more source
Molecular Spectroscopy as an alternative for dating Textiles
Ancient linen textiles undergo with time a slow change reflected in their Infrared and Raman spectra. The recording of FT-IR and FT-Raman spectra, that reveals a disappearance of some bands and appearance of other ones during the centuries, enables a ...
Baraldi Pietro, Tinti Anna
doaj +1 more source