Results 71 to 80 of about 7,742 (217)

Landscape Change Detected over a Half Century in the Arctic National Wildlife Refuge Using High-Resolution Aerial Imagery

Remote Sensing, 2018
Rapid warming has occurred over the past 50 years in Arctic Alaska, where temperature strongly affects ecological patterns and processes. To document landscape change over a half century in the Arctic National Wildlife Refuge, Alaska, we visually ...
Janet C. Jorgenson, M. Torre Jorgenson, Megan L. Boldenow, Kathleen M. Orndahl   +3 more
doaj   +1 more source

Modular Control of PEG‐Poly(2‐Oxazoline) Co‐Assembly Enables Tunable Aggregate Properties for Intraocular Pressure Management

Advanced Healthcare Materials, EarlyView.
A thermo‐responsive poly(2‐oxazoline)‐based injectable formulation is developed to modulate intraocular pressure (IOP) in both normal and hypotonic eyes. By adjusting the PEG content, the aggregation behavior is finely tuned, enabling IOP elevation without long‐term deposition.
Yuji Tanaka, Shohei Morikawa, Shigehito Osawa   +2 more
wiley   +1 more source

Shifts in dissolved organic matter and nutrients in tundra ponds along a gradient of permafrost erosion

Arctic Science
The accelerated thawing of permafrost in ice-wedge polygonal landscapes results in the formation of shallow ponds, where nutrients and dissolved organic matter (DOM) remain poorly characterized.
Thomas Pacoureau, Flora Mazoyer, Roxane Maranger, Milla Rautio, Isabelle Laurion   +4 more
doaj   +1 more source

Evaporation dominates evapotranspiration on Alaska’s Arctic Coastal Plain

Arctic, Antarctic, and Alpine Research, 2018
The dynamics of evapotranspiration (ET), such as the partitioning to evaporation and transpiration, of polygonal ground on the Arctic Coastal Plain are not well understood.
Jessica M. Young-Robertson, Naama Raz-Yaseef, Lily R. Cohen, Brent Newman, Thom Rahn, Victoria Sloan, Cathy Wilson, Stan D. Wullschleger   +7 more
doaj   +1 more source

Structure and formation of ice-ground veins of the second lake-alluvial terrace in the North of Gydan in the late Neopleistocene–Holocene

Лëд и снег, 2019
The syngenetic ice and ice-ground composite veins in khasyrey (alas) and interalas plateaus were studied on the second lake-alluvial terrace located in the North of the Gydan Peninsula near the village of Gyda. On the basis of the radiocarbon dating, the
Ya. V. Tikhonravova, A. V. Lupachev, E. A. Slagoda, V. V. Rogov, A. O. Kuznetsova, V. I. Butakov, G. V. Simonova, N. A. Taratunina, D. R. Mullanurov   +8 more
doaj   +1 more source

Microfluidic Nano‐Assembly of Red‐Blood‐Cell (RBC) Lipids and Components for Engineering Extracellular Vesicles

Advanced Healthcare Materials, EarlyView.
Engineered red blood cell‐derived extracellular vesicles (eRBCEVs) are synthesized via controlled microfluidic assembly from native RBC lipids, enabling tunable encapsulation of proteins, nucleic acids, nanoparticles, and viral vectors. The platform demonstrates reproducible nanoscale architecture, preserved membrane composition, and functional cargo ...
Chiranth K. Nagaraj, Xilal Y. Rima, Kim T. Nguyen, Courtney Culkins, Nana Boateng, Jacob Doon‐Ralls, Alejandro Bresolin, Xin Huang, Hong Li, Vahedi Amid, Ajeet Pal Singh, Dharti Shantaram, Anastasiia Amari, Mangesh D. Hade, Nicholas R. Merriam, Zachary D. Schultz, Scott Q. Harper, Nizar Y. Saad, Setty M. Magaña, Willa A. Hsueh, Rachel E. Kopec, Blaise R. Kimmel, Andre F. Palmer, Eduardo Reátegui   +23 more
wiley   +1 more source

Ice wedge degradation and CO2 and CH4 emissions in the Tuktoyaktuk Coastlands, Northwest Territories

Arctic Science, 2018
Increases in ground temperature make soil organic carbon in permafrost environments highly vulnerable to release to the atmosphere. High-centred polygonal terrain is a form of patterned ground that may act as a large source of carbon to the atmosphere ...
Abra F. Martin, Trevor C. Lantz, Elyn R. Humphreys   +2 more
doaj   +1 more source

3D Bioprinted Breast Cancer‐Stroma Model with Tailored Migration‐Permissive Bioink Reveals Impact of Adipose‐Derived Stromal Cells on Cancer Cell Migration and Invasion Dynamics

Advanced Healthcare Materials, EarlyView.
A migration‐permissive bioink composed of methacrylated collagen type I and thiolated hyaluronic acid enables 3D bioprinting of breast cancer‐stroma models. Single‐cell tracking reveals that adipose stromal cells enhance tumor cell motility and stromal invasion, accompanied by collagen remodeling, and a shift in tumor cell morphology.
Sabrina Stecher, Joachim Schenk, Alessandro Cianciosi, Katherina Hemmen, David Böhringer, Franziska Dusi, Jessica Faber, Philipp Stahlhut, Benedikt Gantert, Emilie Rouenhoff, Annika Gmöhling, Tessa Lühmann, Jörg Teßmar, Jürgen Groll, Silvia Budday, Tomasz Jüngst, Ben Fabry, Katrin G. Heinze, Petra Bauer‐Kreisel, Torsten Blunk   +19 more
wiley   +1 more source

High-resolution mapping of spatial heterogeneity in ice wedge polygon geomorphology near Prudhoe Bay, Alaska. [PDF]

Sci Data, 2020
Abolt CJ, Young MH.
europepmc   +1 more source

POSS‐PEG‐NHS and GSH Cocrosslink DPAV to Prepare Anticalcification Bioprosthetic Scaffold With Enhanced Reendothelization, Anti‐inflammation, and Anti‐ROS

Advanced Healthcare Materials, EarlyView.
POSS‐PEG‐NHS and GSH cocrosslinked DPAV to prepare a multifunctional anticalcification valve substitute. This modification enhances mechanical properties, hemocompatibility, and re‐endothelialization while promoting anti‐inflammatory M2 macrophage infiltration and reducing calcification.
Yuqing Zhang, Chen Qian, Yingjie He, Jingli Ding, Binhao Zhang, Minghui Zou, Xing Chen, Jinping Zhao, Cuifen Lu, Jinping Liu, Jianliang Zhou   +10 more
wiley   +1 more source