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58 papers found.
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Passivation and control of partially known SISO nonlinear systems via dynamic neural networks

In this paper, an adaptive technique is suggested to provide the passivity property for a class of partially known SISO nonlinear systems. A simple Dynamic Neural Network (DNN), containing only two neurons and without any hidden-layers, is used to identify the unknown nonlinear system. By means of a Lyapunov-like analysis the new learning law for this DNN, guarantying both...

Experimental analysis on the dynamic wake of an actuator disc undergoing transient loads

The Blade Element Momentum model, which is based on the actuator disc theory, is still the model most used for the design of open rotors. Although derived from steady cases with a fully developed wake, this approach is also applied to unsteady cases, with additional engineering corrections. This work aims to study the impact of an unsteady loading on the wake of an actuator disc...

Using eDNA to detect the distribution and density of invasive crayfish in the Honghe-Hani rice terrace World Heritage site

The Honghe-Hani landscape in China is a UNESCO World Natural Heritage site due to the beauty of its thousands of rice terraces, but these structures are in danger from the invasive crayfish Procambarus clarkii. Crayfish dig nest holes, which collapse terrace walls and destroy rice production. Under the current control strategy, farmers self-report crayfish and are issued...

Synthesis of Nitrogen and Sulfur Co-doped Carbon Dots from Garlic for Selective Detection of Fe3+

Jian Xu 4 Yiding Wang 1 William W. Yu 1 0 Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University in Olomouc , Šlechtitelů 27

Environmental Conditions Associated with Elevated Vibrio parahaemolyticus Concentrations in Great Bay Estuary, New Hampshire

Reports from state health departments and the Centers for Disease Control and Prevention indicate that the annual number of reported human vibriosis cases in New England has increased in the past decade. Concurrently, there has been a shift in both the spatial distribution and seasonal detection of Vibrio spp. throughout the region based on limited monitoring data. To determine...

Magnetospheric activity of bare strange quark stars

J. W. Yu 0 0 School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University , Beijing 100871 , China A B S T R A C T In the model of Ruderman and Sutherland, the

In patients with post-sternotomy mediastinitis is vacuum-assisted closure superior to conventional therapy?

A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether vacuum-assisted closure therapy (VAC) is superior to conventional therapy for treating post-sternotomy mediastinitis. Altogether >261 papers were found using the reported search, of which 9 represented the best evidence to answer the clinical question. The...

Centriolar satellites assemble centrosomal microcephaly proteins to recruit CDK2 and promote centriole duplication

Andrew Kodani Timothy W Yu Jeffrey R Johnson Divya Jayaraman Tasha L Johnson Lihadh Al-Gazali Laszló Sztriha Jennifer N Partlow Hanjun Kim Alexis L Krup Alexander Dammermann Nevan Krogan

PyroClean: Denoising Pyrosequences from Protein-Coding Amplicons for the Recovery of Interspecific and Intraspecific Genetic Variation

High-throughput parallel sequencing is a powerful tool for the quantification of microbial diversity through the amplification of nuclear ribosomal gene regions. Recent work has extended this approach to the quantification of diversity within otherwise difficult-to-study metazoan groups. However, nuclear ribosomal genes present both analytical challenges and practical limitations...

Testing three pipelines for 18S rDNA-based metabarcoding of soil faunal diversity

A number of basic and applied questions in ecology and environmental management require the characterization of soil and leaf litter faunal diversity. Recent advances in high-throughput sequencing of barcode-gene amplicons (‘metabarcoding’) have made it possible to survey biodiversity in a robust and efficient way. However, one obstacle to the widespread adoption of this...

Evaluation of the Significance of Circulating Insulin-Like Growth Factor-1 and C-Reactive Protein in Patients with Chronic Obstructive Pulmonary Disease

Ye, H Yu, W Yu et al. Circulating IGF-1 and C-reactive protein in COPD 2 Professor Jiewen Wu Department of Respiration, First Affiliated Hospital of Shantou University Medical College , 57 Changping

Exploiting sparseness in de novo genome assembly

Background The very large memory requirements for the construction of assembly graphs for de novo genome assembly limit current algorithms to super-computing environments. Methods In this paper, we demonstrate that constructing a sparse assembly graph which stores only a small fraction of the observed k-mers as nodes and the links between these nodes allows the de novo assembly...

The draft genome of a socially polymorphic halictid bee, Lasioglossum albipes

Guojie Zhang Naomi E Pierce 0 Douglas W Yu 1 0 Department of Organismic and Evolutionary Biology, Museum of Comparative Zoology, Harvard University , 26 Oxford St, Cambridge, MA 02138 , USA 1 State Key

POMK mutations disrupt muscle development leading to a spectrum of neuromuscular presentations

Dystroglycan is a transmembrane glycoprotein whose interactions with the extracellular matrix (ECM) are necessary for normal muscle and brain development, and disruptions of its function lead to dystroglycanopathies, a group of congenital muscular dystrophies showing extreme genetic and clinical heterogeneity. Specific glycans bound to the extracellular portion of dystroglycan...

Phenopedia and Genopedia: disease-centered and gene-centered views of the evolving knowledge of human genetic associations

Summary: We developed web-based applications that encourage the exploration of the literature on human genetic associations by using a database that is continuously updated from PubMed. These applications provide user-friendly interfaces for searching summarized information on human genetic associations, using either genes or diseases as the starting point. Availability...

Modelling the multiwavelength light curves of PSR B1259−63/SS 2883

PSR B1259−63/SS 2883 is a binary system in which a 48-ms pulsar orbits around a Be star in a high-eccentric orbit with a long orbital period of about 3.4 yr. Extensive broad-band observational data are available for this system from the radio band to very high energy (VHE) range. The multifrequency emission is unpulsed and non-thermal, and is generally thought to be related to...

Crystal Structure of the Neisseria gonorrhoeae MtrD Inner Membrane Multidrug Efflux Pump

Neisseria gonorrhoeae is an obligate human pathogen and the causative agent of the sexually-transmitted disease gonorrhea. The control of this disease has been compromised by the increasing proportion of infections due to antibiotic-resistant strains, which are growing at an alarming rate. The MtrCDE tripartite multidrug efflux pump, belonging to the hydrophobic and amphiphilic...

Crystal Structure of the Open State of the Neisseria gonorrhoeae MtrE Outer Membrane Channel

Active efflux of antimicrobial agents is one of the most important strategies used by bacteria to defend against antimicrobial factors present in their environment. Mediating many cases of antibiotic resistance are transmembrane efflux pumps, composed of one or more proteins. The Neisseria gonorrhoeae MtrCDE tripartite multidrug efflux pump, belonging to the hydrophobic and...