Results 21 to 30 of about 5,333,087 (331)

Plant Mediated Green Synthesis of Silver Nanoparticles Using Tecomella undulata Leaf Extract and Their Characterization

open access: yesNano Biomedicine and Engineering, 2016
Green synthesis of silver nanoparticles (AgNPs) was carried out using aqueous extract of Roheda (Tecomella undulata) at 60 ℃ in orbital shaking incubator.
Sadhan Kumar Chaudhuri   +2 more
doaj   +1 more source

Characterization and Assessment of Antimicrobial Activity and Potential of Heavy Metal ion Detection of Silver Nanoparticles synthesized from Actinidia deliciosa paste using double distilled water and 70% ethanol as solvent [PDF]

open access: yesJournal of Nanostructures, 2018
Green synthesis of nanoparticles using plants as sources exhibiting superiority over the physical and chemical methods that are expensive and can involve the use of toxic, hazardous chemicals, which may pose biological and environmental risks. In present
Ratika Komal, Simran Kashyap
doaj   +1 more source

Comorbidities and neurosurgical interventions in a cohort with connective tissue disorders

open access: yesFrontiers in Neurology
BackgroundConnective tissue disorders (CTDs) are a heterogeneous group of disorders often presenting with a variety of comorbidities including musculoskeletal, autonomic, and immune dysfunction. Some CTDs such as hypermobile Ehlers-Danlos syndrome (hEDS),
Ilene S. Ruhoy   +9 more
doaj   +1 more source

The crust structure of the Morasko meteorite – a preliminary hypothesis

open access: yesGeologos, 2017
A small piece of the Morasko meteorite, weighing 970 g, yields traces of its journey through the Earth’s atmosphere and of its impact into a mineral substrate, such as reflected in the meteorite’s crust. This is seen in the crust structure in the form of
Stankowski Wojciech T.J.
doaj   +1 more source

Concept Drift Mitigation in Low-Cost Air Quality Monitoring Networks

open access: yesSensors
Future air quality monitoring networks will integrate fleets of low-cost gas and particulate matter sensors that are calibrated using machine learning techniques.
Gerardo D’Elia   +5 more
doaj   +1 more source

Novel Biologically Active Glass Fiber Functionalized Using Magnesium Phosphate Cement Promotes Bone and Vascular Regeneration

open access: yesAdvanced Biology, EarlyView.
In this study, a new type of bioactive glass fiber ‐based composite magnesium phosphate bone cement is prepared and verified that its mechanical strength and biological properties. In addition, the cement may have played a biologically active role in the Notch and HIF signaling pathways.
Yuzheng Lu   +12 more
wiley   +1 more source

Kaplama Malzemelerin Taramalı Elektron Mikroskobunda Tahribatsız Kimyasal Analizleri

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2022
Bu çalışmada, içeriği bilinmeyen ve yüzeyi farklı bir malzeme ile kaplanmış bir numunenin kaplama yüzeyine tahribatsız olarak EDS-SEM analizleri yapılarak kaplama ve altlık malzemelerde bulunan elementlerin belirlenmesi ve birbirinden ayırt edilmesi ...
Sinem Başkut, Servet Turan
doaj   +1 more source

Proceedings of International Workshop "Global Computing: Programming Environments, Languages, Security and Analysis of Systems" [PDF]

open access: yes, 2003
According to the IST/ FET proactive initiative on GLOBAL COMPUTING, the goal is to obtain techniques (models, frameworks, methods, algorithms) for constructing systems that are flexible, dependable, secure, robust and efficient.
Priami, Corrado (eds.)
core  

Conservation laws for vacuum tetrad gravity

open access: yes, 2006
Ten conservation laws in useful polynomial form are derived from a Cartan form and Exterior Differential System (EDS) for the tetrad equations of vacuum relativity. The Noether construction of conservation laws for well posed EDS is introduced first, and
Bateman H   +17 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

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