Results 31 to 40 of about 296,430 (201)

Conductance quantization and snake states in graphene magnetic waveguides [PDF]

open access: yes, 2008
We consider electron waveguides (quantum wires) in graphene created by suitable inhomogeneous magnetic fields. The properties of uni-directional snake states are discussed. For a certain magnetic field profile, two spatially separated counter-propagating
A. De Martino   +7 more
core   +2 more sources

Collaborations with Tribal Elders for Sustainability Education

open access: yesInternational Dialogues on Education: Past and Present, 2015
Environmental sustainability studies are enhanced through local and regional partnerships between academicians and curriculum developers with members of area First Nation communities who have lived sustainably since time immemorial. Recent collaborative
Richard D. Scheuerman   +2 more
doaj   +1 more source

Tomonaga-Luttinger liquid parameters of magnetic waveguides in graphene [PDF]

open access: yes, 2008
Electronic waveguides in graphene formed by counterpropagating snake states in suitable inhomogeneous magnetic fields are shown to constitute a realization of a Tomonaga-Luttinger liquid.
De Martino, A.   +3 more
core   +3 more sources

Species distribution modeling of two poorly known populations of Spalerosophis diadema (Reptilia: Colubridae): are the Zagros Mountains a true barrier for fragmentation in this species?

open access: yesGeology, Ecology, and Landscapes, 2023
Predictive models of species distribution can be beneficial for identifying the most important and influential environmental factors in species distribution and understanding the current and future habitat suitability of species.
Reza Yadollahvandmiandoab   +2 more
doaj   +1 more source

About the Cover Art [PDF]

open access: yes, 2017
I made this drawing in 2016 as cover for our prison newsletter. I have been in prison for many years. I wanted this drawing to be a metaphor of what I think is the usual relationship between prison staff and prisoners. The snake represents the prevailing
Bakker, Annet
core   +3 more sources

Snake Robot Gait Decomposition and Gait Parameter Optimization [PDF]

open access: yesarXiv, 2021
This paper proposes Gait Decomposition (G.D), a method of mathematically decomposing snake movements, and Gait Parameter Gradient (GPG), a method of optimizing decomposed gait parameters. G.D is a method that can express the snake gait mathematically and concisely from generating movement using the curve function to the motor control order when ...
arxiv  

Lateral oscillation and body compliance help snakes and snake robots stably traverse large, smooth obstacles [PDF]

open access: yesIntegrative and Comparative Biology (2020), 60 (1), 171, 2020
Snakes can move through almost any terrain. Similarly, snake robots hold the promise as a versatile platform to traverse complex environments like earthquake rubble. Unlike snake locomotion on flat surfaces which is inherently stable, when snakes traverse complex terrain by deforming their body out of plane, it becomes challenging to maintain stability.
arxiv   +1 more source

Polyvalent Snake Antivenoms: Production Strategy and Their Therapeutic Benefits

open access: yesToxins, 2023
Snake envenomation remains an important yet neglected medical problem in many countries, with around five million people affected, and over a hundred thousand deaths annually. Plasma-derived antivenoms are the main therapeutic agent available. Monovalent
Kavi Ratanabanangkoon
doaj   +1 more source

Some algebraic invariants of the edge ideals of some $q$-fold bristled graphs [PDF]

open access: yesarXiv, 2023
In this paper, we compute the exact values of regularity of the quotient rings of the edge ideals associated to multi triangular snake and multi triangular ouroboros snake graphs. Also we compute the exact values of depth, Stanley depth, regularity and projective dimension of the quotient rings of the edge ideals associated to $q$-fold bristled graphs ...
arxiv  

Improving long-term postoperative survival in a porcine cardiac valve surgery model utilizing cardiopulmonary bypass via left thoracotomy: a single-center experience sharing insights

open access: yesFrontiers in Cardiovascular Medicine
ObjectiveThe objective of this study was to improve long-term postoperative survival in a porcine cardiac valve surgery model by utilizing cardiopulmonary bypass (CPB) via left thoracotomy.
Qingping Xia   +5 more
doaj   +1 more source

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