Results 21 to 30 of about 2,909,703 (371)

The Wnt-specific astacin proteinase HAS-7 restricts head organizer formation in Hydra

open access: yesBMC Biology, 2021
Background The Hydra head organizer acts as a signaling center that initiates and maintains the primary body axis in steady state polyps and during budding or regeneration.
Berenice Ziegler   +14 more
doaj   +1 more source

Thermal and Chemical Characterization of Kenaf Fiber (Hibiscus cannabinus) Reinforced Epoxy Matrix Composites

open access: yesPolymers, 2021
Kenaf (Hibiscus cannabinus L.) is one of the most investigated and industrially applied natural fibers for polymer composite reinforcement. However, relatively limited information is available regarding its epoxy composites.
T. T. Silva   +6 more
semanticscholar   +1 more source

miR-200b restrains EMT and aggressiveness and regulates matrix composition depending on ER status and signaling in mammary cancer

open access: yesMatrix Biology Plus, 2020
Secreted microRNAs (miRNAs) reside in a complex regulatory network with extracellular matrix (ECM) macromolecules, which affect cell-cell communication, therefore miRNA expression highlights its significance in several aspects of human diseases ...
Zoi Piperigkou   +4 more
doaj   +1 more source

Characterization of Surface Modified Phoenix sp. Fibers for Composite Reinforcement

open access: yesJournal of Natural Fibers, 2021
This paper reports the morphological, physical, chemical, mechanical and thermal properties of untreated and various chemically treated natural fibers extracted from the petioles of the Phoenix sp. plants.
G. Rajeshkumar
doaj   +1 more source

Dexamethasone-loaded zeolitic imidazolate frameworks nanocomposite hydrogel with antibacterial and anti-inflammatory effects for periodontitis treatment

open access: yesMaterials Today Bio, 2022
Periodontitis is a bacterial-induced, chronic inflammatory disease characterized by progressive destruction of tooth-supporting structures. Pathogenic bacteria residing in deep periodontal pockets after traditional manual debridement can still lead to ...
Ning Li   +8 more
doaj   +1 more source

Some insights into the reactivity of oxovanadium phosphate: synthesis and characterization of an VOPO4–H2N(CH2)3NH2 coordination compound [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The lamellar matrix of VOPO4·2H2O was used as the host species to prepare a VOPO4–1,3-diaminopropane coordination compound. The oxovanadium matrix and the synthesized hybrid were characterized by elemental analysis, infared spectroscopy, thermogravimetry,
ROBSON F. DE FARIAS, CLAUDIO AIROLDI
doaj   +3 more sources

Environmental Impact Assessment of Granite and Marble stone quarries Using RIAM and Iranian Leopold Matrix Methods [PDF]

open access: yesPizhūhish dar Bihdāsht-i Muḥīṭ., 2020
Background and Aim:Regardless of the positive economic effects, the adverse environmental impacts of mines make it necessary to assess environmental impacts.
zohre rahnamabargard   +3 more
doaj   +1 more source

Tooth matrix analysis for biomonitoring of organic chemical exposure: Current status, challenges, and opportunities [PDF]

open access: yesEnvironmental Research, 2015
Epidemiological evidence supports associations between prenatal exposure to environmental organic chemicals and childhood health impairments. Unlike the common choice of biological matrices such as urine and blood that can be limited by short half-lives for some chemicals, teeth provide a stable repository for chemicals with half-life in the order of ...
Syam S, Andra   +2 more
openaire   +2 more sources

Graphene Oxide Derivatives and Their Nanohybrid Structures for Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Analysis of Small Molecules

open access: yesNanomaterials, 2021
Matrix-assisted laser desorption/ionization (MALDI) has been considered as one of the most powerful analytical tools for mass spectrometry (MS) analysis of large molecular weight compounds such as proteins, nucleic acids, and synthetic polymers thanks to
Seung-Woo Kim   +2 more
doaj   +1 more source

Difficulties in the Production of Ausferritic Nodular Cast Iron without Heat Treatment [PDF]

open access: yesArchives of Foundry Engineering, 2023
The paper presents results of tests carried out on ausferrite carbide matrix alloyed ductile cast iron. The ausferrite was obtained via addition of Cu and Mo alloying elements. This eliminated heat treatment from the alloy production cycle.
M. Stawarz, M. Lenert, K. Piasecki
doaj   +1 more source

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