Results 71 to 80 of about 562,749 (241)

Luwak Coffee Classification Using UV-Vis Spectroscopy Data: Comparison of Linear Discriminant Analysis and Support Vector Machine Methods

open access: yesAceh International Journal of Science and Technology, 2018
UV-Vis spectroscopy has been used as a promising method for coffee quality evaluation including in authentication of several high-economic coffee types.
Diding Suhandy, Meinilwita Yulia
doaj   +1 more source

Alloyed Nanoparticles with Lipid Coatings [PDF]

open access: yes, 2018
Monodisperse silver and gold alloy nanoparticles of controlled composition and size were synthesized for the development of a potential drug delivery system.
Falcon Ontiveros, Fatima, Gilbert, Brian
core   +1 more source

Chiral separation of substituted phenylalanine analogues using chiral palladium phosphine complexes with enantioselective liquid–liquid extraction [PDF]

open access: yes, 2010
Chiral palladium phosphine complexes have been employed in the chiral separation of amino acids and phenylalanine analogues in particular. The use of (S)-xylyl-BINAP as a ligand for the palladium complex in enantioselective liquid–liquid extraction ...
Adriaan J. Minnaard   +47 more
core   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Color and Near‐Infrared Reflectance Covary in Distinct Ways Across Taxa

open access: yesEcology and Evolution
Solar radiation reaching Earth spans 300–2500 nm, covering ultraviolet (UV), visible (Vis), and near‐infrared (NIR) wavelengths. Its reflectance is critical for animal signaling, camouflage, and thermoregulation, likely leading to selective trade‐offs ...
Jonathan Goldenberg   +13 more
doaj   +1 more source

Analisis Krom (VI) pada air muara suangai Banjir Kanal Timur dengan Spektrofotometri UV-Vis.

open access: yes, 1998
Telah dilakukan penentuan kadar Krom (VI) dalam air muara Sungai Baniir Kanal Timur Semarang dengan spektrofotometri UV - Vis. Pemisahan Krom (VI) dari unsur pengganggu dilakukan secara ekstraksi dengan menggunakan pereaksi kupferron dan pelarut ...
Prihastaningsih , Prihastaningsih
core  

STUDIES ON PLANT BILE PIGMENTS. [PDF]

open access: yes, 1982
The (4 Z, 10 2, 15Ej-2,3-dihydrobilindione 4, along with the fully unsaturated (E, 2, Z)-analogue 8, has been prepared from the corresponding (Z, Z, Z)-isomer by a variation of Falk's method (Falk et ul., 1980).
Cmiel, Edmund   +5 more
core  

An investigation of the role the donor moiety plays in modulating the efficiency of ‘donor-π-acceptor-π-acceptor’ organic DSSCs [PDF]

open access: yes, 2017
Three ‘D-π-A-π-A’ based dyes have been synthesized featuring MeO-, MeS- and Me2N- as donor residues and benzothiadiazole and cyanoacrylic acid residues as acceptor units. UV–vis spectroscopy, solution electrochemistry and DFT modelling indicated that the
Ahn, Sungwoo   +6 more
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Novel Tailoring of Ternary ZnS‐MXene‐TiO2 Nanocomposite Heterojunction and Its Tunable Electrochemical Properties With Enhanced Photocatalytic Degradation

open access: yesAdvanced Engineering Materials, EarlyView.
ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir   +7 more
wiley   +1 more source

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