Results 71 to 80 of about 149,865 (273)

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

open access: yesAdvanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon   +10 more
wiley   +1 more source

The history of Andulus during the Islamic Era and the Rule of Arabs (711 - 755 A.D) [PDF]

open access: yesتاریخ اسلام, 2000
After capturing Maghreb, Moslems sought for more conquests in order to make the field ready to spread Islam more and more. The Moslems' readiness and appropriate circumstances prepared the arrangements for the spread of Islam in a vast area, called ...
gholamreza jamshid-nezhad avval
doaj  

East meets West: Mounted Encounters in Early and High Mediaeval Europe

open access: yesActa Periodica Duellatorum, 2017
By the Late Middle Ages, mounted troops - cavalry in the form of knights - are established as the dominant battlefield arm in North-Western Europe. This paper considers the development of cavalry after the Germanic Barbarian Successor Kingdoms such as ...
Gassmann Jürg
doaj   +1 more source

A certain synchronizing property of subshifts and flow equivalence [PDF]

open access: yes, 2011
We will study a certain synchronizing property of subshifts called $\lambda$-synchronization. The $\lambda$-synchronizing subshifts form a large class of irreducible subshifts containing irreducible sofic shifts.
Matsumoto, Kengo
core  

Computations on Sofic S-gap Shifts

open access: yes, 2011
Let $S=\{s_{n}\}$ be an increasing finite or infinite subset of $\mathbb N \bigcup \{0\}$ and $X(S)$ the $S$-gap shift associated to $S$. Let $f_{S}(x)=1-\sum\frac{1}{x^{s_{n}+1}}$ be the entropy function which will be vanished at $2^{h(X(S))}$ where $h ...
C Spandl   +7 more
core   +1 more source

Nanoscale Mapping of the Subcellular Glycosylation Landscape

open access: yesAdvanced Science, EarlyView.
Using multiplexed super‐resolution imaging with fluorophore‐labeled lectins, this study reports intracellular glycosylation at the nanoscale across organelles and synaptic specializations. Extending glycan analysis beyond the cell surface, Glyco‐STORM reveals distinct glycosylation nanodomains in the ER, Golgi, lysosomes, and synaptic sites.
Helene Gregoria Schroeter   +4 more
wiley   +1 more source

Shooting Experiments with Early Medieval Arrowheads

open access: yesEXARC Journal, 2019
In the Merovingian era (5th-8th century AD) a lot of variously shaped iron arrowheads were used by the Franks, Alemannians and Bavarians, who dwelled in the region known today as Germany, Austria and Switzerland (See Figure 1).
Holger Riesch
doaj  

Helix Alignment, Chevrons, and Edge Dislocations in Twist‐Bend Ferroelectric Nematics

open access: yesAdvanced Science, EarlyView.
The recently discovered twist‐bend ferroelectric nematic (NTBF) is the new member of the multiferroic family, representing a fluid with an oblique helicoidal (heliconical) periodic structure of spontaneous electric polarization. The work presents a thorough exploration of the material properties of this phase, how the periodic modulation of ...
Bijaya Basnet   +8 more
wiley   +1 more source

On negation in yes/no questions in Serbo-Croatian [PDF]

open access: yes, 2006
The phenomenon discussed in this paper is the so-called expletive negation in negated yes/no questions in Serbo-Croatian. The term expletive negation seems, at this point to be a useful descriptive term for the phenomenon in question. One of the goals of
Milicevic, Natasa
core  

Hamiltonian Pseudo-rotations of Projective Spaces

open access: yes, 2018
The main theme of the paper is the dynamics of Hamiltonian diffeomorphisms of ${\mathbb C}{\mathbb P}^n$ with the minimal possible number of periodic points (equal to $n+1$ by Arnold's conjecture), called here Hamiltonian pseudo-rotations.
Ginzburg, Viktor L., Gurel, Basak Z.
core   +1 more source

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