Giant mediastinal lymphocele after esophagectomy successfully treated with thoracic duct embolization.

A 64-year old man had developed a giant mediastinal lymphocele after undergoing esophagectomy for the treatment of esophageal squamous cell carcinoma. The thoracic duct was embolized with six micro-coils, followed by embolization using a 1:3 mixture of N-butyl-2-cyanoacrylate (Histoacryl; B. Braun, Melsungen, Germany) and ethiodized oil.

Clinical evaluation the success rate and complications of fluoroscopically guided removal of tracheal tube metallic stents.

Background: Long-term placement of airway stents has a high probability of restenosis of the airway due to granulation tissue hyperplasia, and it is difficult to remove the stent. Our aim is to evaluate the success rate and complications of removal of tracheal tube metallic stents under fluoroscopic guidance, and to compare the difference between uncovered stent and covered stent.

Methods: We retrospectively reviewed 45 cases (31 males and 14 females; age, 12-71 years) of tracheal metallic stent removal performed at our center between January 2014 and December 2019.

Strong Ferromagnetism Achieved via Breathing Lattices in Atomically Thin Cobaltites.

Low-dimensional quantum materials that remain strongly ferromagnetic down to monolayer thickness are highly desired for spintronic applications. Although oxide materials are important candidates for the next generation of spintronics, ferromagnetism decays severely when the thickness is scaled to the nanometer regime, leading to deterioration of device performance. Here, a methodology is reported for maintaining strong ferromagnetism in insulating LaCoO (LCO) layers down to the thickness of a single unit cell.

Strain-Mediated High Conductivity in Ultrathin Antiferromagnetic Metallic Nitrides.

Strain engineering provides the ability to control the ground states and associated phase transition in epitaxial films. However, the systematic study of the intrinsic character and strain dependency in transition-metal nitrides remains challenging due to the difficulty in fabricating stoichiometric and high-quality films. Here the observation of an electronic state transition in highly crystalline antiferromagnetic CrN films with strain and reduced dimensionality is reported.

Correction to: Duganella rivus sp. nov., Duganella fentianensis sp. nov., Duganella qianjiadongensis sp. nov. and Massilia guangdongensis sp. nov., isolated from subtropical streams in China and reclassification of all species within genus Pseudoduganella.

In the published version of the article, the title should have read 'Duganella rivi sp. nov., Duganella fentianensis sp.

Massilia aquatica sp. nov., Isolated from a Subtropical Stream in China.

A Gram-stain-negative, catalase- and oxidase-positive, rod-shaped and motile strain FT127W was isolated from a subtropical stream in China. Comparison based on 16S rRNA gene sequences showed that strain FT127W belongs to genus Massilia and shares 98.5% similarity with Massilia buxea A9 as its closest neighbor.

Duganella rivus sp. nov., Duganella fentianensis sp. nov., Duganella qianjiadongensis sp. nov. and Massilia guangdongensis sp. nov., isolated from subtropical streams in China and reclassification of all species within genus Pseudoduganella.

Four Gram-stain-negative, catalase-positive, rod-shaped and motile strains (FT55W, FT93W, CY13W and DS3) were isolated from subtropical streams in China. Comparisons based on 16S rRNA gene sequences indicated that strains FT55W, FT93W and CY13W take strain Pseudoduganella danionis E3/2, and strain DS3 takes strain Pseudoduganella eburnea 10R5-21 as their closest neighbour, respectively. The genome sizes of strains FT55W, FT93W, CY13W and DS3 were 6.

Optical imaging of the potential distribution at transparent electrode/solution interfaces.

Measuring the electrode potential with spatio-temporal resolution is of essential importance for surface electrochemistry, energy storage and conversion among others. Optical imaging of the electrode potential distribution on transparent electrodes (ITO, FTO and single-layer graphene, etc.) is successfully achieved by using oblique incident reflectivity difference (OIRD) technology.

Roseovarius tibetensis sp. nov., a halophilic bacterium isolated from Lake LongmuCo on Tibetan Plateau.

Two Gram-stain negative halophilic strains, designated as LM2 and LM4, were isolated from Lake LongmuCo on Tibetan Plateau. These two strains were aerobic, catalaseand oxidase-positive, nonmotile and rod-shaped organisms. Phylogenetic analysis based on 16S rRNA gene sequences indicated that LM2 and LM4 belong to the genus Roseovarius, with Roseovarius tolerans EL-172 (97.

Artificial Synapses Emulated by an Electrolyte-Gated Tungsten-Oxide Transistor.

Considering that the human brain uses ≈10 synapses to operate, the development of effective artificial synapses is essential to build brain-inspired computing systems. In biological synapses, the voltage-gated ion channels are very important for regulating the action-potential firing. Here, an electrolyte-gated transistor using WO with a unique tunnel structure, which can emulate the ionic modulation process of biological synapses, is proposed.

Halomonas tibetensis sp. nov., isolated from saline lakes on Tibetan Plateau.

Strains pyc13 and ZGT13 were isolated from Lake Pengyan and Lake Zigetang on Tibetan Plateau, respectively. Both strains were Gram-negative, catalase- and oxidase-positive, aerobic, rod-shaped, nonmotile, and nonflagellated bacteria. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains pyc13 and ZGT13 belong to the genus Halomonas, with Halomonas alkalicola 56-L4-10aEn as their closest neighbor, showing 97.

Quercetin nanoparticles display antitumor activity via proliferation inhibition and apoptosis induction in liver cancer cells.

Quercetin is a potent cancer therapeutic agent and dietary antioxidant present in fruit and vegetables. Quercetin prevents tumor proliferation by inducing cell cycle arrest and is a well known cancer therapeutic agent and autophagy mediator. Recent studies showed that drug delivery by nanoparticles have enhanced efficacy with reduced side effects.

Toward Switchable Photovoltaic Effect via Tailoring Mobile Oxygen Vacancies in Perovskite Oxide Films.

The defect chemistry of perovskite oxides involves the cause to most of their abundant functional properties, including interface magnetism, charge transport, ionic exchange, and catalytic activity. The possibility to achieve dynamic control over oxygen anion vacancies offers a unique opportunity for the development of appealing switchable devices, which at present are commonly based on ferroelectric materials. Herein, we report the discovery of a switchable photovoltaic effect, that the sign of the open voltage and the short circuit current can be reversed by inverting the polarity of the applied field, upon electrically tailoring the distribution of oxygen vacancies in perovskite oxide films.

Contamination, Fractionation and Biological Risk Related to Metals in Surface Sediments from the Largest Deep Freshwater Lake in China.

The toxicity and mobility of metals in the environment are driven by their specific chemical forms and binding states. However, heavy metal fractionation in sediments from plateau deep lakes in China is rare. This study analyzed surface sediments collected from Fuxian Lake, the largest deep freshwater lake in China; parameters examined included total metal concentrations, chemical partitioning, and biological risk assessment.

Application of combined-type Y-shaped covered metallic stents for the treatment of gastrotracheal fistulas and gastrobronchial fistulas.

Objective: To determine the safety and feasibility of combined-type integrated Y-shaped self-expanding covered metallic stents to treat gastrotracheal fistulas (GTFs) and gastrobronchial fistulas (GBFs).

Methods: We retrospectively reviewed the data of 10 patients with postoperative GTFs or GBFs. Depending on the size and location of the fistula and the airway diameter, we custom-designed 2 or 3 stents for each patient.

High-performance visible blind ultraviolet photodetector based on KTaO single crystal.

We report a visible-blind ultraviolet photoconductive detector with interdigitated electrodes based on KTaO (KTO) single crystals. Both the steady spectral responses and the transient photovoltaic measurements clearly exhibit a cutoff wavelength at 344 nm (∼3.6  eV), in accordance with the bandgap of KTO.

Insulating phase at low temperature in ultrathin La0.8Sr0.2MnO3 films.

Metal-insulator transition is observed in the La0.8Sr0.2MnO3 thin films with thickness larger than 5 unit cells.

A new non-destructive readout by using photo-recovered surface potential contrast.

Ferroelectric random access memory is still challenging in the feature of combination of room temperature stability, non-destructive readout and high intensity storage. As a non-contact and non-destructive information readout method, surface potential has never been paid enough attention because of the unavoidable decay of the surface potential contrast between oppositely polarized domains. That is mainly due to the recombination of the surface movable charges around the domain walls.

An epitaxial ferroelectric tunnel junction on silicon.

Epitaxially grown functional perovskites on silicon (001) and the ferroelectricity of a 3.2 nm thick BaTiO3 barrier layer are demonstrated. The polarization-switching-induced change in tunneling resistance is measured to be two orders of magnitude.

High-sensitivity SrTiO3 photodetectors with paralleled multiple interdigital electrode cells.

We report high-sensitivity SrTiO(3) photoconductive detectors with multiple photoelectric cells connected in parallel. The photocurrent of the detectors increases significantly with an increase of the cell number. The photocurrent responsivity of the detector with three cells can reach 237 mA/W at 10 V bias under illumination of the 375 nm laser, and the corresponding quantum efficiency is 77% at 10 V bias.

Right bronchopleural fistula treated with a novel, Y-shaped, single-plugged, covered, metallic airway stent.

Background: Bronchopleural fistula (BPF) is an infrequent but life-threatening complication after pneumonectomy. The incidence of BPF reported in the literature varies from 0.3% to 20%.

Evidence for a crucial role played by oxygen vacancies in LaMnO3 resistive switching memories.

LaMnO(3) (LMO) films are deposited on SrTiO(3):Nb (0.8 wt%) substrates under various oxygen pressures to obtain different concentrations of oxygen vacancies in the films. The results of X-ray diffraction verify that with a decrease of the oxygen pressure, the c-axis lattice constant of the LMO films becomes larger, owing to an increase of the oxygen vacancies.

Low-noise solar-blind photodetectors based on LaAlO3 single crystal with transparent indium-tin-oxide electrode as detection window.

The low-noise solar-blind photodetectors of indium-tin-oxide/LaAlO(3)/Ag (ITO/LAO/Ag) have been fabricated based on the properties of LAO bandgap excitation and the transparent conductance of ITO thin film. The ITO thin films are epitaxially grown on LAO wafers as the electrodes and detection windows of the photodetectors. The photodetectors have low noise and excellent electromagnetic shielding.