Samarium-Doped Lead Magnesium Niobate-Lead Titanate Ceramics Fabricated by Sintering the Mixture of Two Different Crystalline Phases.

The fabrication method plays a key role in the performance of lead magnesium niobate-lead titanate-based ceramics. (1 - )[Pb(MgNb)TiO]-[PbSm(MgNb)TiO] piezoelectric ceramics were prepared by sintering the mixture of two different crystalline phases in which two pre-sintered precursor powders were mixed and co-fired at designated ratios ( = 0.3, 0.

Enhancement of Thermoelectric Performance for CuCl Doped P-Type CuSnCoS.

CuSnS (CSS) has gained great attraction due to its constitutive earth-abundant elements and intrinsic low lattice thermal conductivity, κl, potentially providing high quality factor, B, and high zT value. However, the lack of band convergence is the bottleneck to enhancing the thermoelectric performance of CuSnS when performing the band engineering. To study the doping effect on the band structure and the thermoelectric performance, the composite CuSnCoS-CuCl ( = 0, 0.

Stabilities and novel electronic structures of three carbon nitride bilayers.

We predict three novel phases of the carbon nitride (CN) bilayer, denoted α-CN, β-CN and γ-CN, respectively. All of them consist of two CN sheets connected by C-C covalent bonds. The phonon dispersions reveal that all these phases are dynamically stable, because no imaginary frequency is present.

Knockdown of PEBP4 inhibits human glioma cell growth and invasive potential via ERK1/2 signaling pathway.

Phosphatidylethanolamine (PE)-binding protein 4 (PEBP4) is an antiapoptotic protein that is aberrantly expressed in various malignancies. We previously demonstrated that PEBP4 expression is dramatically induced in human gliomas and positively correlated with tumor grade and patient survival. However, the function of PEBP4 in human glioma development and underlying mechanisms remain largely unknown.

Electronic Structure and Band Gap Engineering of Two-Dimensional Octagon-Nitrogene.

A new phase of nitrogen with octagon structure has been predicted in our previous study, which we referred to as octagon-nitrogene (ON). In this work, we make further investigations of its stability and electronic structures. The phonon dispersion has no imaginary phonon modes, which indicates that ON is dynamically stable.

Fast identification of the conduction-type of nanomaterials by field emission technique.

There are more or less dopants or defects existing in nanomaterials, so they usually have different conduct-types even for the same substrate. Therefore, fast identification of the conduction-type of nanomaterials is very essential for their practical application in functional nanodevices. Here we use the field emission (FE) technique to research nanomaterials and establish a generalized Schottky-Nordheim (SN) model, in which an important parameter λ (the image potential factor) is first introduced to describe the effective image potential.

MicroRNA-27a Inhibits Cell Migration and Invasion of Fibroblast-Like Synoviocytes by Targeting Follistatin-Like Protein 1 in Rheumatoid Arthritis.

Fibroblast-like synoviocytes (FLS) with aberrant expression of microRNA (miRNA) are critical pathogenic regulators in rheumatoid arthritis (RA). Previous studies have found that overexpression or silencing of miRNA can contribute to the development of miRNA-based therapeutics in arthritis models. In this study, we explored the effects of miR-27a on cell migration and invasion in cultured FLS from RA patients.

Increased expression of phosphatidylethanolamine-binding protein 4 (PEBP4) strongly associates with human gliomas grade.

Abnormal expression of phosphatidylethanolamine-binding protein 4 (PEBP4) has been found in various types of malignancies. However, the PEBP4 expression in human gliomas is still unclear. In this study, we aim to compare the expression of PEBP4 in tumor samples derived from 58 patients with different grades of gliomas with that in 5 non-neoplastic brain samples and to investigate the clinical significance of PEBP4 expression in gliomas.

Quantum Szilard engines with arbitrary spin.

The quantum Szilard engine (QSZE) is a conceptual quantum engine for understanding the fundamental physics of quantum thermodynamics and information physics. We generalize the QSZE to an arbitrary spin case, i.e.

Specialized core stability exercise: a neglected component of anterior cruciate ligament rehabilitation programs.

The incidence of anterior cruciate ligament injury has continued to increase over the last two decades. This injury is associated with abnormal gait patterns and osteoarthritis of the knee. In order to accelerate recovery, the introduction of core stability exercises into the rehabilitation program is proposed.

Knee function after anterior cruciate ligament reconstruction with patellar or hamstring tendon: a meta-analysis.

Background: There is currently no consensus regarding the best graft type for anterior cruciate ligament reconstruction. Therefore, the aim of this study was to investigate the effects of patellar and hamstring tendon grafts on long-term knee function after anterior cruciate ligament reconstruction.

Methods: This meta-analysis was conducted according to the methodological guidelines outlined by the Cochrane Collaboration.

Effect of anterior cruciate ligament reconstruction on biomechanical features of knee in level walking: a meta-analysis.

Background: The anterior cruciate ligament (ACL) is one of the most commonly injured knee ligaments. Even following ACL reconstruction, significant articular cartilage degeneration can be observed and most patients suffer from premature osteoarthritis. Articular cartilage degeneration and osteoarthritis development after ACL injury are regarded as progressive process that are affected by cyclic loading during frequently performed low-intensity daily activities.

Generalized Fowler-Nordheim theory of field emission of carbon nanotubes.

Based on the low-energy band structure of carbon nanotubes (CNs), we develop a generalized Fowler-Nordheim theory of the CN field emission, in which the behavior of the current-voltage (I-V) characteristics depends on the electric field and the diameter of the CNs. This formalism reveals the key differences of field emission between conventional bulk metallic emitters and low-dimensional emitters and gives a clear physical understanding of the non-Fowler-Nordheim feature of the I-V characteristics of the CN field emission.