The internal insulation condition of capacitor voltage transformers (CVTs) is a key influence factor that affects their measurement performance and safe operation. However, the internal insulation would age along with long-time operation and degrade due to environmental factors, and once the insulation degradation grows, serious damage and even explosion may happen in CVTs; hence, it is necessary to monitor the internal insulation condition of CVTs, and the fault type and fault degree need to be identified. In this paper, a data-driven internal insulation condition identification method for CVTs is proposed.
View Article and Find Full Text PDFThis study aimed to investigate temperature dependencies at different injection currents (ICs) of the electroluminescence (EL) spectra from a green InGaN/GaN light-emitting diode (LED) based on multiple quantum wells (MQWs) grown on a Si substrate in a wide range of ICs (0.001-350 mA) and temperatures (6-350 K). The results show that the temperature-changing characteristic of the EL peak energy gradually evolves from an approximately V-shaped temperature dependence into a wave-shaped (three-step blueshift) dependence with increasing IC.
View Article and Find Full Text PDFPlants (Basel)
December 2019
Calcium-dependent protein kinase (CPK) is crucial in Ca signal transduction, and is a large gene family in plants. In our previous work, we reported CPKs were important for natural rubber biosynthesis. However, this gene family in other rubber producing plants has not been investigated.
View Article and Find Full Text PDFNMDA receptors (NMDARs) are critical for physiological synaptic plasticity, learning, and memory and for pathological plasticity and neuronal death. The GluN1 subunit is encoded by a single gene, GRIN1, with 8 splice variants, but whether the diversity generated by this splicing has physiological consequences remains enigmatic. Here, we generate mice lacking from the GluN1 exon 5-encoded N1 cassette (GluN1a mice) or compulsorily expressing this exon (GluN1b mice).
View Article and Find Full Text PDFSerum galectin-3 (Gal-3) in patients with hypertension complicated with diastolic dysfunction and its predictive value for efficacy were investigated. One hundred patients with hypertension complicated with diastolic dysfunction admitted to the First Affiliated Hospital of Jiamusi University from June 2017 to December 2018 were enrolled as group A, symptomatically treated with conventional drugs. Further 80 individuals undergoing physical examination during the same period were enrolled as group B.
View Article and Find Full Text PDFIEEE Trans Cybern
October 2021
In this article, we consider the problem of decentralized composite optimization over a connected and symmetric graph, in which each node holds its own agent-specific private convex functions, and communications are only allowed between nodes with direct links. A variety of algorithms has been proposed to solve such a problem in an alternating direction method of multiplier (ADMM) framework. Many of these algorithms, however, need to include some extra proximal term in the augmented Lagrangian function such that the resulting algorithm can be implemented in a decentralized manner.
View Article and Find Full Text PDFAscorbate oxidase (AO) plays important roles in plant growth and development. Previously, we reported a cotton gene that acts as a positive factor in cell growth. Investigations on () family genes and their multiple functions are limited.
View Article and Find Full Text PDFBackground: Moyamoya disease (MMD) is a major health concern associated with blocked arteries at the base of the brain. The aim of this study will synthesize the current evidence of the efficacy and safety of extracranial-intracranial bypass (EIB) for the treatment of adult patients with MMD.
Methods: A systematically and comprehensively literature search will be performed in PubMed, EMBASE, Web of Science, CENTRAL, CINAHL, AMED, CBM, and CNKI to identify relevant randomized controlled trails (RCTs) investigating the efficacy and safety of EIB for treating MMD.
Iron-sulfur (FeS) clusters are essential metal cofactors involved in a wide variety of biological functions. Their catalytic efficiency, biosynthesis, and regulation depend on FeS stability in aqueous solution. Here, molecular modeling is used to investigate the hydrolysis of an oxidized (ferric) mononuclear FeS cluster by bare dissociation and water substitution mechanisms in neutral and acidic solution.
View Article and Find Full Text PDFThe efficient translocation of the bacterial toxin adenylate cyclase toxin (CyaA) from the bacterial cytosol to the extracellular environment by the type 1 secretion system (T1SS) is essential for the toxin to function. To understand the molecular features that are responsible for the efficient translocation of CyaA, here we used optical tweezers to investigate the mechanical properties and conformational dynamics of the RTX domain of CyaA at the single molecule level. Our results revealed that apo-RTX behaves like an ideal random coil.
View Article and Find Full Text PDFBackground: Hypoxic preconditioning (HPC) may protect multiple organs from various injuries. We hypothesized that HPC would reduce lung injury in patients undergoing thoracoscopic lobectomy.
Methods: In a prospective randomized controlled trial, 70 patients undergoing elective thoracoscopic lobectomy were randomly allocated to the HPC group or the control group.
mutant () ovules of upland cotton have been used to investigate cotton fiber development for decades. However, the molecular differences of green tissues between and wild-type (WT) cotton were barely reported. Here, we found that gossypol content, the most important secondary metabolite of cotton leaves, was higher in L.
View Article and Find Full Text PDFRubber particles are a specific organelle for natural rubber biosynthesis (NRB) and storage. Ethylene can significantly improve rubber latex production by increasing the generation of small rubber particles (SRPs), regulating protein accumulation, and activating many enzyme activities. We conducted a quantitative proteomics study of different SRPs upon ethylene stimulation by differential in-gel electrophoresis (DIGE) and using isobaric tags for relative and absolute quantification (iTRAQ) methods.
View Article and Find Full Text PDFEngineered bi-histidine (biHis)-based metal chelation is a general and robust method to enhance the mechanical stability of proteins. Here we used single molecule force spectroscopy techniques to investigate the effect of binding of Co/Co on the mechanical stability of an engineered biHis mutant of protein GB1, G6-53. We found that the binding of Co/Co can lead to an enhancement of the mechanical stability of G6-53, but the degree of enhancement is drastically different.
View Article and Find Full Text PDFChem Commun (Camb)
October 2019
We report the direct observation of equilibrium folding-unfolding dynamics of a mechanically labile, three helix bundle protein GA using a commercial atomic force microscope (AFM). Our study extends the capability of commercial AFMs towards studying protein unfolding/refolding at equilibrium as well as increasingly complex biomolecular systems in the context of biological function.
View Article and Find Full Text PDFUtilizing protein fragment reconstitution, we demonstrate the reversible and repeatable functionalization of protein hydrogels. This novel method enables the presentation and release of functional protein ligands on protein hydrogels.
View Article and Find Full Text PDFHydrogels with dynamic mechanical properties are of special interest in the field of tissue engineering and drug delivery. However, it remains challenging to tailor the dynamic mechanical response of hydrogels to simultaneously meet diverse application needs. Here, we report a hetero-coiled-coil complex cross-linked protein hydrogel exhibiting unusual multiple energy dissipation modes and tunable dynamic response.
View Article and Find Full Text PDFL-Ascorbate (Asc) plays important roles in cell growth and plant development, and its de novo biosynthesis was catalyzed by the first rate-limiting enzyme VTC1. However, the function and regulatory mechanism of involved in cell development is obscure in . Herein, the Asc content and AsA/DHA ratio were accumulated and closely linked with fiber development.
View Article and Find Full Text PDFLancet Rheumatol
September 2019
Background: China approved adalimumab for the treatment of ankylosing spondylitis in 2013. However, the cost of the standard dose regimen exceeds ¥15 000 (around US$2250) per month, which is well beyond affordability for most Chinese patients. No biosimilars of adalimumab are available in China; IBI303 is a monoclonal antibody against TNFα that is currently in development.
View Article and Find Full Text PDFBackground: Radiotherapy (RT) is considered an important therapeutic strategy in the fight against colorectal cancer (CRC). However, the existence of some radioresistance factors becomes the main challenge for the RT. Recently, non-coding RNAs (ncRNAs) have shown an important role in modulating cancer cell responses to ionizing radiation (IR).
View Article and Find Full Text PDFKnotted and slipknotted proteins are topologically complex. Understanding their folding and unfolding mechanism has attracted considerable interest. Here we combined protein engineering, single-molecule optical tweezers, and steered molecular dynamics (SMD) simulations to investigate the mechanical unfolding and folding of a slipknotted protein pyruvoyl-dependent arginine decarboxylase (PADC).
View Article and Find Full Text PDFRNA sequencing (RNA-Seq)-based gene expression analysis is applicable to a wide range of biological purposes in various species. Reverse transcription quantitative PCR (RT-qPCR) is also used to assess target gene expression utilizing stably expressed reference genes as internal control under a given set of conditions. However, investigations of the reference genes for RT-qPCR normalization in the process of somatic embryogenesis (SE) initial dedifferentiation in are rarely reported.
View Article and Find Full Text PDFMcl-1 is an anti-apoptotic protein overexpressed in hematological malignancies and several human solid tumors. Small molecule inhibition of Mcl-1 would offer an effective therapy to Mcl-1 mediated resistance. Subsequently, it has been the target of extensive research in the pharmaceutical industry.
View Article and Find Full Text PDFToll-like receptor 4 (TLR4), a member of the pattern recognition receptors, has been reported to be involved in carcinogenesis. However, the clinical impact of TLR4 in peripheral T-cell lymphomas (PTCL) remains unclear. The current study, using immunohistochemical staining, first examined TLR4 and programmed cell death-ligand 1 (PD-L1) expression in patients with PTCL, to correlate TLR4 and PD-L1 expression with clinicopathological parameters.
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