Results 101 to 110 of about 8,165,004 (306)

Raman spectroscopy and electronic microscopy structural studies of Caucasian and Afro human hair

Heliyon, 2019
Human hair fibre is subjected to various structural modifications due to the application of chemicals such as dyes, shampoos and bleaches and/or physical procedures such as heating, and often more than one procedure is performed on the same hair.
Jordana Dias dos Santos, Howell G.M. Edwards, Luiz Fernando Cappa de Oliveira   +2 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Solid adenine and seawater salts exposed to gamma radiation: An FT-IR and EPR spectroscopy analysis for prebiotic chemistry

Heliyon, 2019
Solids of adenine obtained from distilled water and seawater lyophilized solutions were γ irradiated at a 94.52 kGy dose. Results indicate that pure solid adenine had a low degradation rate, likewise the solid containing seawater salts.
João Paulo T. Baú, Daniel F. Valezi, Sául A. Villafañe-Barajas, María Colín-García, Alicia Negrón-Mendoza, Eduardo Di Mauro, Dimas A.M. Zaia   +6 more
doaj   +1 more source

Quantification of the liquid window of deep eutectic solvents [PDF]

, 2018
Deep eutectic solvents (DESs) have been considered as a new class of green solvents with tunable physical properties based on the selective combination of their individual components.
Vis, Mark, Physical and Colloid Chemistry, van den Bruinhorst, Adriaan, Sub Physical and Colloid Chemistry, Esteves, A. Catarina C., Tuinier, Remco, Kollau, Laura J.B.M.   +6 more
core   +3 more sources

Metastatic niche shaped by host factors influences disseminated cancer cell fate

FEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward, Álvaro Ruiz‐Tabas, Patricia Altea‐Manzano   +2 more
wiley   +1 more source

Influence of stacked structure of carbons modified on its surface on n-pentane adsorption

Heliyon, 2019
In this study, the microstructure of a series of activated carbons modified on its chemistry surface was evaluated from X-ray diffraction and porous structure analysis, and the effect of the stacked graphitic structure on the n-pentane adsorption ...
Ana María Carvajal-Bernal, Fernando Gómez-Granados, Liliana Giraldo, Juan Carlos Moreno-Piraján   +3 more
doaj   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Potensi Ekstrak Kulit Buah Manggis sebagai Inhibitor Korosi Baja Karbon dalam Larutan NaCl 1% Jenuh Karbon Dioksida

Αl-Kimiya: Jurnal Ilmu Kimia dan Terapan, 2019
Pemanfaatan limbah bahan alam sebagai inhibitor korosi belum banyak dilaporkan. Diantaranya adalah kulit buah manggis (Garcinia mangostana L.) yang dalam bentuk ekstraknya mengandung senyawa golongan flavonoid, alkaloid, dan tanin.
Tety Sudiarti, Nia Anriyani, Asep Supriadin   +2 more
doaj   +1 more source

Evolution of equilibrium pickering emulsions: a matter of time scales [PDF]

, 2010
A new class of equilibrium solid-stabilized oil-in-water emulsions harbors a competition of two processes on disparate time scales that affect the equilibrium droplet size in opposing ways.
Physical and Colloid Chemistry, Luigjes, B., Julius W. J. de Folter, Albert P. Philipse, Sub Algemeen Scheikunde, Daniela J. Kraft, Willem K. Kegel, Kraft, D.J., de Folter, J.W.J., Philipse, A.P., Kegel, W.K., Bob Luigjes, Sub Physical and Colloid Chemistry   +12 more
core   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source