Results 111 to 120 of about 2,170,354 (276)

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

Epigenetic Clock in Bears: A Simple Cost‐Effective Blood DNA Methylation‐Based Age Estimation Method Applicable to Multiple Bear Species

Ecology and Evolution
Age is an essential factor to understand the life history and demographic parameters of wildlife. Previously, we established an age estimation method for brown bears based on blood DNA methylation level.
Michito Shimozuru, Shiori Nakamura, Jumpei Yamazaki, Yojiro Yanagawa, Hiroo Tamatani, Misako Kuroe, Koji Yamazaki, Shinsuke Koike, Yusuke Goto, Tomoko Naganuma, Kahoko Tochigi, Akino Inagaki, Naoki Takekoshi, Seungyun Baek, Nobutaka Sato, Yusuke Honda, Toshio Tsubota, Hideyuki Ito   +17 more
doaj   +1 more source

Ancestral polymorphisms and sex-biased migration shaped the demographic history of brown bears and polar bears.

PLoS ONE, 2013
Recent studies have reported discordant gene trees in the evolution of brown bears and polar bears. Genealogical histories are different among independent nuclear loci and between biparentally inherited autosomal DNA (aDNA) and matrilineal mitochondrial ...
Shigeki Nakagome, Shuhei Mano, Masami Hasegawa   +2 more
doaj   +1 more source

Identifying climate refugia and its potential impact on Tibetan brown bear (Ursus arctos pruinosus) in Sanjiangyuan National Park, China

Ecology and Evolution, 2019
Climate change has direct impacts on wildlife and future biodiversity protection efforts. Vulnerability assessment and habitat connectivity analyses are necessary for drafting effective conservation strategies for threatened species such as the Tibetan ...
Yunchuan Dai, Charlotte E. Hacker, Yuguang Zhang, Wenwen Li, Yu Zhang, Haodong Liu, Jingjie Zhang, Yunrui Ji, Yadong Xue, Diqiang Li   +9 more
semanticscholar   +1 more source

Fluorescent Polymeric Nanofibers as Ratiometric Multiplexed Skin Sensors of pH and Oxygen

Advanced Healthcare Materials, EarlyView.
Fluorescent polymeric nanofibers and nanorods are produced as ratiometric sensors of two important physiological parameters: pH and oxygen. They operate by dual Forster resonance energy transfer from large number of energy donor dyes to limited number of two distinct energy acceptors, enabling simultaneous sensing of pH and oxygen.
Rémi Pelletier, Anila Hoskere Ashoka, Andrey S. Klymchenko   +2 more
wiley   +1 more source

Behavioral and Physiological Responses of Scandinavian Brown Bears (Ursus arctos) to Dog Hunts and Human Encounters

Frontiers in Ecology and Evolution, 2019
Innovations in biologging have offered new possibilities to better understand animals in their natural environment. Biologgers can be used by researchers to measure the impact of human disturbances on wildlife and guide conservation decisions.
Luc Le Grand, Neri H. Thorsen, Boris Fuchs, Alina L. Evans, Timothy G. Laske, Jon M. Arnemo, Jon M. Arnemo, Solve Sæbø, Ole-Gunnar Støen, Ole-Gunnar Støen   +9 more
doaj   +1 more source

3D Printing Strategies for Bioengineering Human Cornea

Advanced Healthcare Materials, EarlyView.
This review highlights recent progress in 3D bioprinting strategies for engineering human corneas. Key aspects include the replication of corneal transparency, curvature, and biomechanical properties, alongside innovations in recent advancements in 3D printing methods, which benefit in overcoming current challenges.
Yunong Yuan, Khoon S. Lim, Gerard Sutton, Gordon G. Wallace, Jingjing You   +4 more
wiley   +1 more source

Analyses of Brown Bear (Ursus arctos Linnaeus, 1758) activity in natural conditions and captivity [PDF]

, 2018
Hrvatska je dom mrkom medvjedu, najvećem europskom grabežljivcu. Naša netaknuta priroda omogućila je opstanak medvjeda u šumovitim planinskim područjima na Dinarskom gorju.
Perković, Katarina
core   +2 more sources

Hanbury Brown and Twiss Correlations of Cooper Pairs in Helical Liquids

, 2014
We propose a Hanbury Brown and Twiss (HBT) experiment of Cooper pairs on the edge channels of quantum spin Hall insulators. The helical edge channels provide a well defined beam of Cooper pairs and perfect Andreev reflections from superconductors ...
Choi, Mahn-Soo
core   +1 more source

Evolutionary history and palaeoecology of brown bear in North-East Siberia re-examined using ancient DNA and stable isotopes from skeletal remains

Scientific Reports, 2019
Over 60% of the modern distribution range of brown bears falls within Russia, yet palaeoecological data from the region remain scarce. Complete modern Russian brown bear mitogenomes are abundant in the published literature, yet examples of their ancient ...
A. Rey-Iglesia, A. García-Vázquez, Eve C. Treadaway, J. van der Plicht, G. Baryshnikov, P. Szpak, H. Bocherens, G. Boeskorov, E. Lorenzen   +8 more
semanticscholar   +1 more source