Theoretical Study on the Mechanism of the Electrocatalytic CO Reduction to Formate by an Iron Schiff Base Complex.

The iron(III) chloride compound 6,6'-di(3,5-di-butyl-2-hydroxybenzene)-2,2'-bipyridine (Fe(dhbpy)Cl) can effectively catalyze the electrochemical CO reduction in ,-dimethylformamide. Density functional calculations were conducted to investigate the mechanism and unravel the governing factors of product selectivity. The results suggest that the initial catalyst, Fe(dhbpy)Cl (formally Fe-Cl), undergoes two reduction steps, accompanied by the dissociation of Cl, leading to the formation of the active ferrous radical intermediate (formally Fe).

Bone metastases in oral squamous cell carcinoma: A real-world retrospective study based on the SEER database.

Background: Bone metastases are rare in oral squamous cell carcinoma (OSCC). It has not been defined on the risk and prognosis of OSCC patients with bone metastases. The purpose of this study was to assess the factors associated with the development and prognosis of bone metastases among OSCC patients.

The Morphological Transformation of the Thorax during the Eclosion of (Diptera: Drosophilidae).

The model organism , as a species of Holometabola, undergoes a series of transformations during metamorphosis. To deeply understand its development, it is crucial to study its anatomy during the key developmental stages. We describe the anatomical systems of the thorax, including the endoskeleton, musculature, nervous ganglion, and digestive system, from the late pupal stage to the adult stage, based on micro-CT and 3D visualizations.

A false positive serology test of SARS‑CoV‑2 in a patient with Waldenström's macroglobulinemia: A case report.

The serology test of SARS-CoV-2 is one of the critical assays to make a diagnosis of SARS-CoV-2 infection. The gold immunochromatography assay (GICA) is a common measure to test SARS-CoV-2 specific IgG and IgM. The sensitivity and specificity of the assay are ~>80%.

Mechanism and selectivity of photocatalyzed CO reduction by a function-integrated Ru catalyst.

The phosphine-substituted Ru(II) polypyridyl complex, [Ru-(tpy)(pqn)(MeCN)] (RuP), was disclosed to be an efficient photocatalyst for the reduction of CO to CO with excellent selectivity. In this work, density functional calculations were performed to elucidate the reaction mechanism and understand the origin of selectivity. The calculations showed that RuP was first excited to the singlet excited state, followed by intersystem crossing to produce a triplet species (3RuIII(L˙-)-S), which was then reduced by the sacrificial electron donor BIH to generate a Ru(L˙) intermediate.

Morphologic analysis of alveolar bone in maxillary and mandibular incisors on sagittal views.

Purpose: The aim of this study was to analyze the morphologic features of alveolus in relatively healthy maxillary and mandibular incisors using cone-beam-computed tomography (CBCT).

Methods: CBCT images of 318 patients were retrospectively acquired. Alveolar bone in incisive area was divided into: type 1 (thick), type 2 (relatively thick with mono-plate concavity), type 3 (thin with double-plate concavities), and type 4 (vulnerably thin).

Allergy-Related Sialodochitis: A Preliminary Cohort Study.

Objectives/hypothesis: To explore the clinically feasible diagnosis criteria and treatment outcomes of allergy-related sialodochitis (ARS).

Study Design: Prospective Cohort Study.

Methods: Ninety-six consecutive patients were enrolled by the following criteria: 1) recurrent swelling of ≥2 large salivary glands that lasted for ≥3 months; 2) with mucus plug exudations; 3) with atopic diseases; 4) ductal stenosis and/or ectasia.

A trade-off between antifouling and the electrochemical stabilities of PEDOTs.

Strong nonspecific protein/cell adhesion on conducting polymer (CP)-based bioelectronic devices can cause an increase in the impedance or the malfunction of the devices. Incorporating oligo(ethylene glycol) or zwitterionic functionalities with CPs has demonstrated superior performance in the reduction of nonspecific adhesion. However, there is no report on the evaluation of the antifouling stability of oligo(ethylene glycol) and zwitterion-functionalized CPs under electrical stimulation as a simulation of the real situation of device operation.

Hsa_circ_0007456 regulates the natural killer cell-mediated cytotoxicity toward hepatocellular carcinoma via the miR-6852-3p/ICAM-1 axis.

Circular RNAs (circRNAs) is one type of important non-coding RNAs that participate in tumorigenesis and cancer progression. In our previous study, we performed a microarray analysis of circRNAs between the tumor tissues and the adjacent normal tissues of hepatocellular carcinoma (HCC) patients, and found that the circRNA hsa_circ_0007456 is significantly downregulated in the tumor tissues and correlated with the prognosis of HCC. We further investigated the relationship between the expression levels of hsa_circ_0007456 in HCC and the susceptibility of NK cells, and found that the expression levels of hsa_circ_0007456 in HCC cell lines significantly influenced their susceptibility to NK cells.

Tunable Protein/Cell Binding and Interaction with Neurite Outgrowth of Low-Impedance Zwitterionic PEDOTs.

Zwitterionic poly(3,4-ethylenedioxythiophene) (PEDOT) is an effective electronic material for bioelectronics because it exhibits efficient electrical trade-off and diminishes immune response. To promote the use of zwitterionic PEDOTs in bioelectronic devices, especially for cell alignment control and close electrocoupling, features such as tunable interaction of PEDOTs with proteins/cells and spatially modulating cell behavior are required. However, there is a lack of reliable methods to assemble zwitterionic EDOTs with other functionalized EDOT materials, having different polarities and oxidation potentials, to prepare PEDOTs with the aforementioned surface properties.

Treatment strategy of hilar and intraglandular stones in wharton's duct: A 12-year experience.

Objectives/hypothesis: To suggest a strategy for transoral removal of hilar and intraparenchymal submandibular stones.

Study Design: Retrospective case series.

Methods: Retrospective evaluation was performed for 514 consecutive patients with hilar and intraparenchymal submandibular stones treated via endoscopy-assisted surgery from January 2006 to June 2018.

Alterations to the Gut Microbiota and Their Correlation With Inflammatory Factors in Chronic Kidney Disease.

Alterations to the gut microbiota have been previously suggested to be tightly linked to chronic systemic inflammation, which is a major contributing factor to complications and disease progression in chronic kidney disease (CKD). Nevertheless, the effect of gut dysbiosis on the pathogenesis and/or production of inflammatory factors in CKD has not been extensively studied to date. In the present study, we conducted 16S ribosomal DNA pyrosequencing using fecal microbiota samples and analyzed the production of serum inflammatory factors in 50 patients with CKD and 22 healthy control (HC) subjects.

Three-dimensional radiographic features of ameloblastoma and cystic lesions in the maxilla.

Objectives: To characterize the radiographic features of maxillary ameloblastoma (AM), odontogenic keratocyst (OKC) and dentigerous cyst (DC) comparatively by using spiral CT and cone beam CT (CBCT).

Methods: Clinical records, histopathological reports, and nonenhanced spiral CT or CBCT images of 191 consecutive patients with primary maxillary AMs, OKCs, or DCs were retrospectively acquired, and radiographic features were analyzed.

Results: The study included 118 males and 73 females (age: 5-84 years).

New Amides and Phenylpropanoid Glucosides from the Fruits of Piper retrofractum.

Two new amides (E)-N-cinnamoyl-2-methoxypiperidine (1) and (R)-1-(2-oxopyrrolidin-3-yl)-5,6-dihydropyridin-2(1H)-one (2), four new amide glucosides, retrofractosides A-D (3-6), and two new phenylpropanoid glucosides, retrofractosides E (7) and F (8), together with 24 known compounds (9-32) were isolated from the fruits of Piper retrofractum. The chemical structures of these new compounds were elucidated based on extensive spectroscopic analysis. All of these isolates (1-32) were evaluated for inhibitory activity against mouse platelet aggregation induced by the peptide AYPGKF-NH.

Morphologic Analysis of Maxillary Sinus Floor and its Correlation to Molar Roots using Cone Beam Computed Tomography.

Objective: To analyse the anterior extension of the maxillary sinus, distribution of the sinus septa and vertical relationship between the maxillary sinus and molar roots using cone beam computed tomography (CBCT).

Methods: Imaging data of 970 consecutive patients who underwent CBCT scans were retrospectively collected. The anterior border, septa distribution of the maxillary sinus and relationship between the maxillary sinus and molar roots were analysed.

Evaluation of Parotid Gland Function Before and After Endoscopy-Assisted Stone Removal.

Purpose: To quantify gland function before and after endoscopy-assisted lithectomy for patients with parotid stones and to analyze correlations among different evaluation modalities.

Materials And Methods: This study investigated 58 patients (27 men and 31 women) with a stone larger than 5 mm or multiple parotid stones who underwent successful endoscopy-assisted surgery at the authors' center from August 2007 through September 2017. Meticulous postoperative manipulations were administered routinely for 3 to 6 months to promote functional recovery of the affected gland.

Photocatalytic reduction of CO to CO and formate by a novel Co(ii) catalyst containing a cis-oxygen atom: photocatalysis and DFT calculations.

The conversion of carbon dioxide (CO) to fuels or value-added chemicals by a photocatalytic system has recently been of growing research interest. One of the challenges is the development of new catalysts with high activity and low cost. Cobalt complexes have long been used as catalysts for the reduction of CO in either electrochemical or photochemical systems.

Bifid variations of the mandibular canal: cone beam computed tomography evaluation of 1000 Northern Chinese patients.

Objectives: The aim of this study was to evaluate and quantify variations of bifid mandibular canals (BMCs) in a population of Northern China by using cone beam computed tomography (CBCT).

Study Design: CBCT images of 1000 consecutive patients were analyzed by using the NewTom proprietary software. BMCs were identified and classified on the basis of the Naitoh classification.