Results 111 to 120 of about 1,021,442 (304)

Adaptive Hydrogels With Spatiotemporal Stiffening Using pH‐Modulating Enzymes

open access: yesAdvanced Functional Materials, EarlyView.
The chemomechanical coupling in an adaptive hydrogel is studied to further the development of adaptive hydrogels. This coupling is achieved by embedding a pH‐modulating enzyme in a pH‐responsive hydrogel. The enzymatic reaction can be triggered locally, which generates a pH‐decreasing wave throughout the system, increasing the crosslinking density and ...
Natascha Gray   +3 more
wiley   +1 more source

Enhancing chalk formation integrity by diammonium phosphate treatment

open access: yesScientific Reports
Fine-grained chalk reservoirs in the North Sea (NS) commonly experience fines migration or particle production, or both, leading to production issues like formation damage and reduced production.
M. Desouky   +4 more
doaj   +1 more source

Multi‐Responsive Dendrimer‐Hyaluronic Acid Hydrogel With Lubricating and Immunoregulatory Functions for Synergistic Osteoarthritis Therapy

open access: yesAdvanced Functional Materials, EarlyView.
A hydrogel with dynamic cross‐links was formed by cross‐linking hyaluronic acid with curcumin‐preloaded, phenylboronic acid‐modified poly(amidoamine) dendrimers. This hydrogel exhibited excellent injectability and self‐healing ability, enabling controlled Cur release in response to low pH, high reactive oxygen species (ROS) generation, or mechanical ...
Junjie Liu   +9 more
wiley   +1 more source

Minerals in Afghanistan : the potential for gold [PDF]

open access: yes, 2006
Gold has been worked in Afghanistan for centuries from many areas including Takhar province in the north and from Ghazni, Zabul, and Kandahar provinces in the south-west of the country.
Benham, Antony John, Coats, Stan
core  

Self‐Assembled Nanoclay Gel With Spheroid MSC‐Derived Exosome Mimetics to Integrate Demineralized Bone Matrix and Noggin‐Targeting miRNA for Synergistic Osteogenesis

open access: yesAdvanced Functional Materials, EarlyView.
We report a versatile nanoclay gel carrier platform that enhances the osteogenic efficacy of demineralized bone matrix (DBM) by integrating nanoclay‐based self‐assembly with cell‐derived exosome mimetics loaded with noggin‐targeting miR‐200c. This design amplifies BMP signaling, thereby promoting DBM‐mediated osteogenesis and offering a promising ...
Changlu Xu   +7 more
wiley   +1 more source

Microfacies control on geomechanical properties of unconventional carbonate reservoirs: insights from a middle jurassic outcrop analogue in Saudi Arabia

open access: yesJournal of Petroleum Exploration and Production Technology
The interplay between depositional and diagenetic processes controls the distribution of geomechanical properties in carbonate rocks. Understanding the distribution of geomechanical properties in rocks is crucial for analyzing the behavior of ...
Adamu Kimayim Gaduwang   +5 more
doaj   +1 more source

Water/rock interactions in experimentally simulated dirty snowball and dirty iceball cometary nuclei [PDF]

open access: yes
In the dirty snowball model for cometary nuclei, comet-nucleus materials are regarded as mixtures of volatile ices and relatively non-volatile minerals or chemical compounds.
Allton, Judith H., Gooding, James L.
core   +1 more source

Silicified Wood‐Inspired, High‐Strength Fire‐Resistant Chitin‐Based Aerogels for Sustainable High‐Temperature Thermal Insulation

open access: yesAdvanced Functional Materials, EarlyView.
Inspired by natural silicified wood, a biomimetic mineralized chitin‐derived aerogel is constructed. It can withstand 81 000 times its own weight, and its backside temperature is 130.4°C after exposure to ∼1300°C butane flame for 600 s, exhibiting high‐strength, fire‐resistance, and super thermal‐insulation properties.
Kai Xu   +11 more
wiley   +1 more source

Testing of a Safety Leadership Model

open access: yesSafety
Fatal and serious injury rates remain unacceptably high in the construction industry. Leadership plays a critical role in safety management and serious and fatal injury prevention.
Jian Shen, Maureen Hassall
doaj   +1 more source

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