Results 61 to 70 of about 214,191 (310)

Flexocaloric effect in superelastic materials

APL Materials, 2022
We present a combined theoretical–experimental study of flexocaloric effects in superelastic materials exhibiting structural transitions. We study a Ginzburg–Landau model combined with a vibrational model for a beam near a ferroelastic transition loaded ...
Clàudia Pérez-Junyent, Marcel Porta, Emma Valdés, Lluís Mañosa, Antoni Planes, Avadh Saxena, Eduard Vives   +6 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Diel vertical migration of Arctic zooplankton during the polar night [PDF]

, 2009
High-latitude environments show extreme seasonal variation in physical and biological variables. The classic paradigm of Arctic marine ecosystems holds that most biological processes slow down or cease during the polar night.
Lorentzen, Dag Arne, Nygard, Henrik, Brierley, Andrew Stuart, Søreide, Janne, Falk-Petersen, S., Willis, Kate J, Griffiths, Collin, Varpe, Oystein, Berge, Jorgen, Leu, Eva, Soreide, Janne, Berge, Jørgen, Falk-Petersen, Stig, Falk-Petersen, S, Eiane, K, Varpe, Øystein, Last, Kim S., Vogedes, Daniel, Griffiths, Colin, Brierley, A.S., Brierley, Andrew S., Cottier, Finlo, Eiane, Ketil, Lorentzen, Dag, Johnsen, Geir, Last, Kim, Willis, Kate, Brierley, Andrew   +27 more
core   +1 more source

Transition scaling of the immature strike-slip fault damage zone in the central Sichuan Basin (SW China)

Frontiers in Earth Science
Immature faults typically exhibit a linear scaling between damage zone width and displacement up to a certain displacement threshold. However, the nature and precise value of this threshold remain debated.
Xiaoxu Liu, Guanghui Wu, Hailong Chen, Hui Long, Song Tang, Chen Su, Weizhen Tian   +6 more
doaj   +1 more source

Dynamic light scattering study of phase transitions in three-dimensional complex plasmas

New Journal of Physics, 2012
The phase transitions of a three-dimensional complex (dusty) plasma under gravity are studied by means of the dynamic light scattering technique. The thermal energy of the dust component is determined during the phase transition to characterize the phase
Andreas Aschinger, Jörg Winter
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Review of flow regime transition criteria for adiabatic co-current upward gas-liquid flow in vertical multi-scale channels

Measurement: Energy
Predicting the vertical gas-liquid flow regime in multi-scale channels is essential for optimizing system performance and design in engineering fields such as heat dissipation, petrochemical processing, and nuclear energy.
Yuhan Liu, Quanbin Zhao, Daotong Chong
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source

Possible vertical transmission of COVID-19 from mother to the newborn; a Case Report

مجله دانشگاه علوم پزشکی بیرجند, 2022
Vertical transmission of the 2019 novel coronavirus (COVID-19) has been reported in several case reports and case series, while the data regarding its transmission is controversial.
Gholamreza Faal
doaj