Results 61 to 70 of about 3,673,985 (240)

Studies on Ionic Flows via Poisson–Nernst–Planck Systems with Bikerman’s Local Hard-Sphere Potentials under Relaxed Neutral Boundary Conditions

open access: yesMathematics
We examine the qualitative properties of ionic flows through ion channels via a quasi-one-dimensional Poisson–Nernst–Planck model under relaxed neutral boundary conditions.
Xiangshuo Liu, Lijun Zhang, Mingji Zhang
doaj   +1 more source

Observations and light curve solutions of ultrashort-period eclipsing binaries

open access: yes, 2017
Photometric observations in V and I bands and low-dispersion spectra of ten ultrashort-period binaries (NSVS 2175434, NSVS 2607629, NSVS 5038135, NSVS 8040227, NSVS 9747584, NSVS 4876238, ASAS 071829-0336.7, SWASP 074658.62+224448.5, NSVS 2729229, NSVS ...
Dimitrov, Dinko P.   +3 more
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

New Bounds For Degree Sequence Of Graphs [PDF]

open access: yesComputer Science Journal of Moldova, 2019
Let $G = (V, E)$ be a simple graph with $n$ vertices, $m$ edges, and vertex degrees $d_1, d_2, ..., d_n$. Let $d_1, d_n$ be the maximum and and minimum degree of vertices. In this paper, we present lower and upper bounds for $\sum_{i=1}^{n}d_i^{2}$ and
Akbar Jahanbani
doaj  

Dobrososedstvo i Evropejskaja politika sosedstva — v chem razlichie? [Good-neighbourly relations and the European Neighbourhood Policy — What is the Difference?] [PDF]

open access: yesБалтийский регион, 2009
The article compares the scope of two diplomatic terms, crucial for the contemporary practice of international cooperation. Drawing examples from historical and contemporary documents, the author shows the difference between the settled notion of good ...
Kuznetsov Artur
doaj   +1 more source

The colour-magnitude relations of ClJ1226.9+3332, a massive cluster of galaxies at z=0.89

open access: yes, 2006
(Abridged) The colour-magnitude relations of one of the most massive, high redshift clusters of galaxies known have been studied. Photometry has been measured in the V, R, I, z, F606W, F814W, J and K bands to a depth of K*+2.5 and spectroscopy confirms ...
Donovan, D.   +4 more
core   +2 more sources

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

open access: yesAdvanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba   +5 more
wiley   +1 more source

The HST Key Project on the Extragalactic Distance Scale. XXII. The Discovery of Cepheids in NGC 1326-A

open access: yes, 1999
We report on the detection of Cepheids and the first distance measurement to the spiral galaxy NGC 1326-A, a member of the Fornax cluster of galaxies.
Abhijit Saha   +23 more
core   +1 more source

A Knowledge‐Based Approach for Understanding and Managing Additive Manufacturing Data

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing processes generate a large amount of data. Effectively managing, understanding, and retrieving information from this data remains a major challenge. Therefore, we propose an ontology‐based approach to integrate heterogeneous data, enable semantic queries, and support decision‐making.
Mina Abd Nikooie Pour   +5 more
wiley   +1 more source

Scaling of current-voltage characteristics of bulk heterojunction solar cells

open access: yesNext Energy
The transport in the mixture of p-type and n-type materials of a bulk heterojunction solar cell is modeled as an effective discretized resistor and diode network. Within this model the current and potential profile is solved using a relaxation method for
Timothy Schlittenhardt   +3 more
doaj   +1 more source

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