Results 61 to 70 of about 102,410 (186)

Sintered aluminium heat pipe (SAHP) [PDF]

open access: yes, 2012
This work is the product of an ongoing PhD project in the School of the Built and Natural Environment of Northumbria University in collaboration with the University of Liverpool and Thermacore Europe Ltd. The achievements at the end of the first year are
Agnew, Brian   +5 more
core  

Analysis of astrometric catalogues with vector spherical harmonics

open access: yes, 2012
Comparison of stellar catalogues with position and proper motion components using a decomposition on a set of orthogonal vector spherical harmonics. We show the theoretical and practical advantages of this technique as a result of invariance properties ...
Klioner, Sergei, Mignard, Francois
core   +3 more sources

Oral manifestations in HIV-positive individuals under highly active antiretroviral therapy: a systematic review and meta-analysis of prevalence data

open access: yesBMC Oral Health
This study aims to analytically explore the prevalence of oral manifestations in HIV-positive patients who are receiving or are not receiving highly active antiretroviral therapy (HAART).
Thais Suzigan Dagnoni   +8 more
doaj   +1 more source

Effects of cutting conditions on the cutting forces in machining additively manufactured Ti6Al4V alloy [PDF]

open access: yesMATEC Web of Conferences
Machining of additive manufacturing (AM) process results in excessive consumption of the cutting power due to the high strength and hardness of the material produced that led to high cutting forces and short tool life during machining process. This paper
Mohammed Sambo Abdulkadir   +2 more
doaj   +1 more source

A Lower Bound on the Estimator Variance for the Sparse Linear Model

open access: yes, 2010
We study the performance of estimators of a sparse nonrandom vector based on an observation which is linearly transformed and corrupted by additive white Gaussian noise. Using the reproducing kernel Hilbert space framework, we derive a new lower bound on
Ben-Haim, Zvika   +4 more
core   +1 more source

The determinants of sustainable land management adoption under risks in upland area of Vietnam

open access: yesSustainable Futures, 2020
This study investigates how the determinants including risk preference affect farmers’ decision to adopt Sustainable Land Management (SLM) practices in upland areas of Vietnam.
Nguyen Van Song   +3 more
doaj   +1 more source

Measuring optical transmission matrices by wavefront shaping

open access: yes, 2015
We introduce a simple but practical method to measure the optical transmission matrix (TM) of complex media. The optical TM of a complex medium is obtained by modulating the wavefront of a beam impinging on the complex medium and imaging the transmitted ...
Lee, KyeoReh   +3 more
core   +1 more source

Research on VHC fatigue properties of two SLM manufactured aluminum alloy

open access: yesHangkong gongcheng jinzhan
Aluminum alloy manufactured by SLM(selective laser melting) technology has been widely used in aerospace and other industries, but it has some defects such as gas pore, LoF(lack of fusion) and so on, which can seriously affect the fatigue performance ...
YIN Haibiao, YAO Weixing, FU Dingkun
doaj   +1 more source

Out of Site out of Mind: Quantifying the Long-term Off-site economic Impacts of Land Degradation in Kenya [PDF]

open access: yes
This study investigated the private and social returns to Sustainable Land Management (SLM) practices with an objective of finding practices that reduce the on-farm and off-farm negative effects of land degradation.
Gachimbi, Louis   +5 more
core   +1 more source

The full set of $c_n$-invariant factorized $S$-matrices

open access: yes, 1992
We use the method of the tensor product graph to construct rational (Yangian invariant) solutions of the Yang-Baxter equation in fundamental representations of $c_n$ and thence the full set of $c_n$-invariant factorized $S$-matrices.
Belavin A A   +10 more
core   +2 more sources

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