Results 11 to 20 of about 26,121 (210)

Biosynthesis of Silver Nanoparticles Using Black Pepper (Piper nigrum) Seed Extract and Evaluation of Their Cytotoxicity. [PDF]

Chem Biodivers
This study reports the green biosynthesis of piperine‐functionalized silver nanoparticles from Piper nigrum seed extract, followed by comprehensive physicochemical characterization and in vitro cytotoxic evaluation. The results confirm successful nanocomposite formation and demonstrate a marked enhancement of cytotoxic activity against gastric cancer ...
Maciel NF, do Lago GV, da Silva Pereira GV, de Farias Ramos IN, Bastos AC, Barreto IAR, Moraes NS, Dos Santos MN, Pereira da Rocha JA, Machado AK, Junior WGP, da Silva Pessoa MM, Uesugi MNM, Khayat AS, Cruz JN, do Rêgo JA, Joele MRSP, Brasil DDSB.   +17 more
europepmc   +2 more sources

Common misconceptions in crystallography and crystal optics [PDF]

J Appl Crystallogr
Six recurrent misconceptions in crystallography, some involving mineral and crystal optics, are analyzed and discussed. The explanation of these and similar misconceptions could serve as educational resources for teachers.Did you know that an X‐ray diffraction pattern is not a spectrum?
Casas L.
europepmc   +2 more sources

Ru-Doped Fe₂TiO₅ as a High-Performance Electrocatalyst for Urea-Assisted Water Splitting. [PDF]

Small
Ru doping in Fe₂TiO₅ enhances urea oxidation reaction (UOR) kinetics by inducing structural distortion and creating favorable adsorption sites. The optimized 2−xRuxTiO5 exhibits superior performance with a lower onset potential and robust durability, demonstrating its potential as an efficient electrocatalyst beyond traditional photocatalytic ...
Ibrahim KB, Harrath K, Hamrang M, Bordin M, Bruyère S, Horwat D, Rodríguez-Castellón E, Sendeku MG, Shinde P, de Souza DO, Olivi L, Vomiero A, Moretti E, Shifa TA.   +13 more
europepmc   +2 more sources

Glazed roman ceramic. A multi-analytical approach [PDF]

, 2018
A multi-analytical approach has been applied to characterize ancient glazed ceramics from the archaeological sites of Magna Mater temple and Domus Tiberiana on the Palatine Hill (Rome, Italy) dated between the 3rd and the early 5th century AD. The aim
Coletti, Fulvio, DE VITO, Caterina, DI FAZIO, Melania, Fabrizi, Lucilla, Govi, Angelica, Medeghini, Laura, Mignardi, Silvano   +6 more
core   +1 more source

Clays for Low-Carbon Cements: Overview, Progress, and Challenges. [PDF]

Glob Chall
This review provides a critical overview of recent developments of activated clays to function as artificial pozzolans. After a thorough description of the clays that yield good pozzolanic performances, selected examples are given on thermal and mechanical activations. Chiefly, general correlations are extracted from reported data despite its scattered
Koufany I, Santacruz I, De la Torre AG, Rodríguez-Ruiz MD, Aranda MAG.   +4 more
europepmc   +2 more sources

Chemical and structural characterization of fibrous richterite with high environmental and health relevance from Libby, Montana (USA) [PDF]

, 2016
This study reports new structural and spectroscopic data of a sample of fibrous richterite from Libby, Montana (USA). The OH-stretching region was investigated by FT-IR. The spectrum showed, except for the typical absorption band at 3671 cm-1 assigned to
BALLIRANO, Paolo, PACELLA, Alessandro
core   +1 more source

Synthesis and solubility of hopeite Zn3(PO4)2·4H2O

Mineralogia, 2023
Minerals from the phosphate groups are used in environmental engineering as thermodynamically stable vehicles for heavy metals such as zinc. The hopeite Zn3(PO4)2·4H2O was synthesized and characterized by X-ray diffraction and scanning electron ...
Bajda Tomasz, Rogowska Melania, Pawłowska Agnieszka   +2 more
doaj   +1 more source

Geological and Mineralogical Analysis of Phosphorites in the Jebel Dhyr Syncline, Eastern Algerian Atlas

Mineralogia, 2023
The characterization of phosphorite features within specific North African sedimentary series remains incomplete. Hence, the primary aim of this research is to determine the composition of powder patterns and phosphatic allochem fragments within the ...
Boulemia Salim, Hadji Riheb, Bouhlal Salah, Hamed Younes, Besser Houda, Ncibi Kaouther   +5 more
doaj   +1 more source

Grundmannite, CuBiSe2, the Se-analogue of emplectite, a new mineral from the El Dragón mine, Potosí, Bolivia [PDF]

, 2016
© 2016 E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers. Also published by Deutsche Mineralogische Gesellschaft, Sociedad Española de Mineralogía, Società Italiana di Mineralogia e Petrologia, Société Française de Minéralogie et de ...
Bindi, L, Förster, Hans-Jürgen, Stanley, Christopher   +2 more
core   +1 more source

Composição Química da Turmalina de Turmalinitos Estratiformes da Mina de Passagem de Mariana, Sudeste do Quadrilátero Ferrífero (MG)

Geologia USP. Série Científica, 2009
A mina subterrânea de Passagem de Mariana é uma das minas de ouro mais antigas do Brasil. O ouro associa-se a turmalinitos estratiformes e veios e brechas de quartzo e carbonato com turmalina.
Gianna Maria Garda, Johann Hans Daniel Schorscher, Paulo Beljavskis, Marcos de Souza Mansueto, Margareth Sugano Navarro, Andrezza Alves Mota   +5 more
doaj   +1 more source