Results 51 to 60 of about 91,395 (262)
The new frontier of microstructural impurity research in polar ice
Annals of Glaciology, 2023 Deciphering the localisation of solid and dissolved impurities on the micron-scale in glacial ice remains a challenge, but is critical to understand the integrity of ice core records and internal deformation.
Nicolas Stoll +5 more
doaj +1 more source
An 8×8 pixel array IC for X-ray spectroscopy [PDF]
2000 IEEE Nuclear Science Symposium. Conference Record (Cat. No.00CH37149), 2002 An integrated circuit providing 64 channels of low-noise signal processing electronics in an 8x8 pixel arrangement has been developed as part of an integrated silicon detector array for high count-rate x-ray spectroscopy applications. Each pixel features low-noise charge integration, programmable peaking time and gain, and an output driver.
Krieger, Bradley +6 more
openaire +2 more sources
Molecular Oncology, EarlyView.Breast cancer remains a major cause of cancer death in women, frequently developing endocrine therapy resistance. This study demonstrates that upregulated p21‐activated kinase 1 (PAK1) activity drives resistance to tamoxifen and long‐term estrogen deprivation in ER+ breast cancer models.
Luisa Schwarzmüller +10 more
wiley +1 more source
BiomimeticsA nature-inspired approach was employed through the development of dopamine-modified epoxy coating for anti-icing applications. The strong affinity of dopamine’s catechol groups for hydrogen bonding with water molecules at the ice/coating interface was ...
Mohammad Sadegh Koochaki +3 more
doaj +1 more source
NMR characterizations of the ice binding surface of an antifreeze protein. [PDF]
PLoS ONE, 2010 Antifreeze protein (AFP) has a unique function of reducing solution freezing temperature to protect organisms from ice damage. However, its functional mechanism is not well understood.
Jiang Hong +5 more
doaj +1 more source
Arctic, Antarctic, and Alpine Research, 2022 A reconstruction of the last 2,000 years BP of environmental and oceanographic changes on the western margin of Spitsbergen was performed using a multidisciplinary approach including the fossil assemblages of diatoms, planktic and benthic foraminifera ...
Fiorenza Torricella +8 more
doaj +1 more source
Molecular Oncology, EarlyView.This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi +6 more
wiley +1 more source
Single particle ICP-TOFMS on previously characterised EGRIP ice core samples: new approaches, limitations, and challenges [PDF]
The CryospherePolar ice contains chemical impurities, which can be used as a proxy for the past climate, using state-of-the-art chemical methods. Despite its capability to access critical physicochemical parameters of insoluble particles, such as number concentration,
N. Stoll +9 more
doaj +1 more source
Disorder Analysis in Infrared Spectroscopy of Acetylene Ice
The Journal of Physical Chemistry AA new method to investigate disorder in ice films is proposed and applied to acetylene ice. It is based on a quantitative analysis of the infrared spectrum data, which includes: the Brendel-Bormann model for the material's dielectric function; molecular vibration modes calculated by density functional theory (DFT); a monomer-dimer model for amorphous ...
S. L. A. Mello +5 more
openaire +2 more sources
Broadband spectroscopy of astrophysical ice analogues
Astronomy & Astrophysics, 2019 Context.Reliable, directly measured optical properties of astrophysical ice analogues in the infrared and terahertz (THz) range are missing from the literature. These parameters are of great importance to model the dust continuum radiative transfer in dense and cold regions, where thick ice mantles are present, and are necessary for the interpretation ...
Giuliano, B. M. +11 more
openaire +4 more sources