Results 71 to 80 of about 208,817 (276)

A new mini-navigation tool allows accurate component placement during anterior total hip arthroplasty. [PDF]

open access: yes, 2018
Introduction: Computer-assisted navigation systems have been explored in total hip arthroplasty (THA) to improve component positioning. While these systems traditionally rely on anterior pelvic plane registration, variances in soft tissue thickness ...
Benson, Jessica R.   +2 more
core   +1 more source

Tidal scattering of stars on supermassive black holes in galactic centers [PDF]

open access: yes, 2001
Some of the mass that feeds the growth of a massive black hole (BH) in a galactic center is supplied by tidal disruption of stars that approach it on unbound, low angular momentum orbits.
Frank J.   +7 more
core   +2 more sources

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

From anaphoric pronoun to copula in Zande [PDF]

open access: yes, 2012
In Zande there is a particle ni which has two syntactic functions. The first one is that of an ana¬phoric pronoun (cf. ex. 1. for its use as a possessive pronoun) which is neutral with regard to gender, number, and syntactic function. The second function
Pasch, Helma
core  

Aqueous Two‐Phase Bioinks for Discrete Packing and Compartmentalization of 3D Bioprinted Cells

open access: yesAdvanced Healthcare Materials, EarlyView.
Aqueous two‐phase systems (ATPS) enable the formation of biomimetic interfaces crucial for tissue engineering. However, clinical translation remains limited by the challenge of precisely controlling cellular compartmentalization. Here, we developed ATPS biomaterial inks for 3D bioprinting allowing tuneable droplet formation via NaCl modulation.
Martina Marcotulli   +14 more
wiley   +1 more source

Targeting the ARRDC3–DRP1 Axis via hUMSC‐Derived Exosomal CRYAB for Neuroprotection in Cerebral Ischemia/Reperfusion Injury

open access: yesAdvanced Healthcare Materials, EarlyView.
Intranasally administered hUMSC‐derived exosomes modulate the CRYAB–ARRDC3–Drp1 axis, alleviating mitochondrial dysfunction and ferroptosis, enhancing neuronal survival, reducing oxidative stress, and promoting functional recovery in ischemia‐reperfusion injury, offering a promising therapeutic strategy for ischemic stroke.
Rong ji   +7 more
wiley   +1 more source

Rock Art Pilot Project Main Report [PDF]

open access: yes
A report on the results of a pilot project to investigate the current state of research, conservation, management and presentation of prehistoric rock art in England commissioned by English Heritage from Archaeology Group, School of Conservation Sciences,
Darvill, Timothy   +2 more
core  

The Utilization of Sports for Peace and Unity in Society [PDF]

open access: yes, 2019
There are many ongoing conflicts in the world. Many methods to end these conflicts have been attempted with various levels of success. A United Nations study in 2003 determined that sports should be increasingly used as a method to bring about peace in ...
Taylor, Christian
core   +1 more source

Isolation Defines Identity: Functional Consequences of Extracellular Vesicle Purification Strategies

open access: yesAdvanced Healthcare Materials, EarlyView.
Four extracellular vesicle purification strategies are compared using ovarian‐cancer ascites and ES‐2 cell supernatants. A novel workflow links purification to function by combining particle‐normalized proteomics with matched cell‐free and cell‐based assays.
Christian Preußer   +10 more
wiley   +1 more source

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

open access: yesAdvanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou   +4 more
wiley   +1 more source

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