Results 81 to 90 of about 165,258 (315)

Enzyme‐Regulated Extended Swelling of Hydrogels for Dehiscence‐Less Tissue Expansions

open access: yesAdvanced Functional Materials, EarlyView.
An interpenetrating hydrogel network with swelling under regulation by enzymatic degradation (INSURED) is fabricated to avoid dehiscence. INSURED remains structurally intact post‐implantation, while HYAL injection enables control over the onset and rate of swelling.
Byung Ik Park   +10 more
wiley   +1 more source

Vertex Covers by Edge Disjoint Cliques [PDF]

open access: yesCombinatorica, 2001
Let \(f(n,t,k)\) be the largest minimum degree of a graph on \(n\) vertices which has no system of \(K_t\)-subgraphs covering every vertex at least once but at most \(k\) times. It is shown that if \(t\geq 3\), \(k\geq 2\), \(n\geq 6t^2-4t\), \(n=q\bigl[(t-1)k+1\bigr]+r\) (here \(1\leq r\leq (t-1)k+1\)), then \(f(n,t,k)\) is either \(n-qk-\lceil {r ...
Bohman, Tom   +3 more
openaire   +2 more sources

Magnetic‐Field Tuning of the Spin Dynamics in the Quasi‐2D Van der Waals Antiferromagnet CuCrP2S6

open access: yesAdvanced Functional Materials, EarlyView.
This study reveals 2D character of the spin dynamics in CuCrP2S6, as well as complex field dependence of collective excitations in the antiferromagnetically ordered state. Their remarkable tuning from the antiferromagnetic to the ferromagnetic type with magnetic field, together with the non‐degeneracy of the magnon gaps favorable for the induction of ...
Joyal John Abraham   +16 more
wiley   +1 more source

Binary vertex cover

open access: yes, 2020
We show that {\sc Vertex Cover} remains difficult if one restricts the number of vertices $|V|$, the number of edges $|E|$ and the size of wanted solution $k$ to be powers of $2$.
openaire   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

open access: yesAdvanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu   +9 more
wiley   +1 more source

Deterministic Parameterized Connected Vertex Cover [PDF]

open access: yes, 2012
In the Connected Vertex Cover problem we are given an undirected graph G together with an integer k and we are to find a subset of vertices X of size at most k, such that X contains at least one end-point of each edge and moreover X induces a connected subgraph.
openaire   +2 more sources

Artificial Compound Eye for Clear Vision in Harsh Environment

open access: yesAdvanced Functional Materials, EarlyView.
Artificial compound eye (CE) with exceptional imaging and motion tracking capturing the movement of a spider and swinging thread with a wide field of view. Surface modifications ensure clear vision of alphabetic letters in rain and fog. Images captured in fog with CE remains visible 3 times longer than simple eyes (SE).
Kehinde Kassim   +6 more
wiley   +1 more source

Implementation of Drug‐Induced Rhabdomyolysis and Acute Kidney Injury in Microphysiological System

open access: yesAdvanced Functional Materials, EarlyView.
A modular Muscle–Kidney proximal tubule‐on‐a‐chip integrates 3D skeletal muscle and renal proximal tubule tissues to model drug‐induced rhabdomyolysis and acute kidney injury. The coculture system enables dynamic tissue interaction, functional contraction monitoring, and quantification of nephrotoxicity, revealing drug side effect‐induced metabolic ...
Jaesang Kim   +4 more
wiley   +1 more source

A New and Fast Approximation Algorithm for Vertex Cover Using a Maximum Independent Set (VCUMI)

open access: yesOperations Research and Decisions, 2015
The importance of non-deterministic polynomial (NP) problems in real world scenarios has compelled researchers to consider simple ways of finding approximate solutions to these problems in polynomial time.
Imran Khan, Naveed Riaz
doaj  

On the Approximate Compressibility of Connected Vertex Cover [PDF]

open access: green, 2020
Diptapriyo Majumdar   +2 more
openalex   +1 more source

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