The intermolecular polar bond interaction and coupling induced spectral splitting phenomenon for a binary mixture.

To explain the polarization Raman noncoincidence effect of specific polar bonds and the noncoincidence phenomenon between FT-Raman and FT-IR spectra, aggregation-induced spectral splitting theory was proposed. In this paper, the vibration splitting theory was demonstrated using two strategies: improving the spectral resolution with cryogenic matrix isolation techniques and identifying cases where the coupling splitting is large enough to be distinguishable. The monomer and dimer splitting bands of acetone were detected when cryogenically isolated by the Ar matrix.

The polarized Raman spectra of N-methylpyrrolidone-an effective method for determination of intermolecular interaction and H-bond formation.

The isotropic and anisotropic component Raman spectra and H NMR of N-methylpyrrolidone (NMP)/carbon tetrachloride and NMP/methanol binary mixture at different volume fractions have been collected. The polarization Raman frequencies and frequency differences of CO stretching vibration for NMP/methanol mixture show unique concentration-dependence and abrupt jump feature. It is found that the H-bond between solute and solvent does not destroy the noncoincidence (NCE) phenomenon, but has a significant synergistic effect on the NCE.

Aggregation induced spectral splitting and Fermi resonance of Ethylene Carbonate in binary mixture.

The vibration band of the ring stretching (ν), the fundamental ring breathing (ν) and the Fermi resonance band of carbonyl stretching mixing with the overtone of the ring breathing (ν 2ν) have been investigated in solid ethylene carbonate (EC) and EC/CHCN and EC/CHCl binary mixture. Dimer structure with aggregation-induced spectral splitting model (AIS) was applied to calculate the vibration spectra using the B3LYP-D3/6-311+G (d,p) procedure. The noncoincidence effect (NCE) and concentration induced frequency shifts of the ν and ν could be well explained by AIS model based on the dimer structure.

High resolution DOA estimation of acoustic plane waves: An innovative comparison among Cuckoo search heuristics and subspace based algorithms.

SONAR signal processing plays an indispensable role when it comes to parameter estimation of Direction of Arrival (DOA) of acoustic plane waves for closely spaced target exclusively under severe noisy environments. Resolution performance of classical MUSIC and ESPRIT algorithms and other subspace-based algorithms decreases under scenarios like low SNR, smaller number of snapshots and closely spaced targets. In this study, optimization strength of swarm intelligence of Cuckoo Search Algorithm (CSA) is accomplished for viable DOA estimation in different scenarios of underwater environment using a Uniform Linear Array (ULA).

Synergistic combination of ACQ and AIE moieties to enhance the emission of hexagonal metallacycles.

Herein, we show the synergistic combination of aggregation-caused quenching (ACQ) and aggregation-induced emission (AIE) units into two hexagonal metallacycles. The resultant metallacycles displayed emergent photophysical properties including tunable fluorescence using the polarity and solubility of the solvents as well as enhanced emissive efficacy. Our work demonstrates the synergistic enhancement of these two orthogonal effects coordination-driven self-assembly.

A line-scanning chromatic confocal sensor for three-dimensional profile measurement on highly reflective materials.

We developed a practical Line-Scanning Chromatic Confocal Sensor (LSCCS) that can generate three-dimensional (3D) points with up to 32 000/s with a high-precision motion device. An optical route of line-scanning confocal spectroscopy is designed and verified by simulation. The LSCCS is composed of a white laser source, a chromatic confocal optics, and a self-developed spectrometer.

UV-Vis, Raman spectroscopic and density functional theoretical studies on microsolvation 1, 2, 4-triazole-3-thione clusters.

Photophysical and photochemical reactions of microsolvation clusters are attracting an increasing attention due to their wide applications in materials science and biology. In this paper, 1, 2, 4-triazole-3-thione (3TT) is investigated in solid, protic, and aprotic solvents using FT-Raman, resonance Raman and electronic absorption spectroscopic experiments. The structures of microsolvation clusters in solvents were confirmed by 488 nm Raman spectroscopy combining with density functional theory (DFT) calculation.

Robust underwater image enhancement method based on natural light and reflectivity.

The poor visibility of underwater images is caused not only by scattering and absorption effects but is also related to light conditions. To improve robustness, a novel underwater image enhancement method based on natural light and reflectivity is proposed. Aiming at the scattering effects of reflectivity, a dehazing process based on the non-correlation of a foreground scene and background light is first conducted.

Anti-cancer effect of miR-139-3p on laryngeal squamous cell carcinoma by targeting rab5a: In vitro and in vivo studies.

Background: Laryngeal squamous cell carcinoma is the second most common head and neck squamous cell carcinoma. Nowadays, as traditional treatment methods are gradually limited, the development of new treatment methods needs to be resolved. This study aimed to investigate the role of microRNA(miR)-139-3p in laryngeal squamous cell carcinoma, and further explored the underlying mechanism.

The noncoincidence phenomenon of acetonylacetone C[double bond, length as m-dash]O stretching in a binary mixture and the aggregation-induced split theory.

This article aims to correlate the noncoincidence effect phenomenon with the aggregation state of acetylacetone C[double bond, length as m-dash]O stretching in a binary mixture. C[double bond, length as m-dash]O stretching noncoincidence effect (NCE) was observed not only between IR and Raman spectra but also between the isotropic and anisotropic Raman spectra of acetonylacetone. The difference in C[double bond, length as m-dash]O stretching wavenumbers of the isotropic and anisotropic Raman spectra (NCE value) in a binary mixture at different concentrations has been calculated.

Noncoincidence Effects of Dimethyl Carbonate in Binary Mixtures Probed by Raman Spectroscopy: Experimental and DFT Calculations.

The components of isotropic Raman and anisotropic Raman for dimethyl carbonate (DMC) dispersed in cyclohexane and acetone at different volume fractions were recorded separately. The noncoincidence effects (NCE) of the ν(C=O) stretching mode were calculated accordingly. The NCE values (Δν) of the ν(C=O) versus DMC volume fractions in the DMC/CH mixtures exhibits a convex (upward) curvature pattern, while the Δν vs concentration in the DMC/CHCOCH mixtures exhibits a concave (downward) curvature.

Preparation of the heterojunction catalyst N-doping carbon quantum dots/P25 and its visible light photocatalytic activity.

N-doping carbon quantum dots were successfully loaded on P25 nanoparticles (denoted as N-CDs/P25) by facile hydrothermal process, and their morphology and chemical structure were systematically studied. The carrier of N-CDs can significantly broaden the photoresponse range of the P25 to the visible region, accelerate charge transportation and separation. Application of the N-CDs/P25 material for the photocatalytic decomposition of Rhodamine B (RhB) gave improved activity relative to P25.

Comprehensive evaluation of wild Cordyceps cicadae from different geographical origins by TOPSIS method based on the macroscopic infrared spectroscopy (IR) fingerprint.

Cordyceps cicadae is an entomogenous fungus that has been used as a valuable traditional Chinese herbal tonic, however, it can be difficult to discern the false from the genuine. In this study, the macroscopic IR fingerprint methods containing Fourier transform infrared spectroscopy (FT-IR) and second derivative infrared spectroscopy (SD-IR) were used to elucidate wild C. cicadae.

Construction of carbon quantum dots/single crystal TiO nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity.

Carbon quantum dots were successfully doped into anatase TiO single crystal nanosheets (TNS) with exposed {001} and {101} reactive facets by a facile solvothermal process. SEM and TEM confirmed the as-prepared TiO nanosheet structure and that the dominant exposed face is the {001} facet, and the loaded N-CDs are nearly spherical with an average size of about 3 nm. XPS results confirmed that the deposited N-CDs were chemically integrated into the TiO nanosheets.

Individualized treatment for allergic rhinitis based on key nasal clinical manifestations combined with histamine and leukotriene D4 levels.

Introduction: The types of allergic rhinitis are roughly classified based on the causative antigens, disease types, predilection time, and symptom severity.

Objective: To examine the clinical typing and individualized treatment approach for allergic rhinitis and to determine the optimal treatment method for this disease using various drug combination therapies.

Methods: A total of 108 participants with allergic rhinitis were divided into three groups based on symptoms.

The Pinx1 Gene Downregulates Telomerase and Inhibits Proliferation of CD133+ Cancer Stem Cells Isolated from a Nasopharyngeal Carcinoma Cell Line by Regulating Trfs and Mad1/C-Myc/p53 Pathways.

Background/aims: Cancer stem cells (CSCs) are important factors for the continuous growth, recurrence, and metastasis of malignant tumors. They are responsible for the ineffectiveness of traditional radiotherapy and chemotherapy toward malignant tumors. Currently, stem cells or side-population cells have been isolated from many cancer cell lines and malignant tumor tissues, including nasopharyngeal carcinoma.

Identification of genes and pathways in nasopharyngeal carcinoma by bioinformatics analysis.

Nasopharyngeal carcinoma is a metastatic malignant tumor originating from nasopharyngeal epithelium. Lacking or nonspecific symptoms of patients with early stage nasopharyngeal carcinoma have significantly reduced the accuracy of diagnosing and predicting nasopharyngeal carcinoma development. This study aimed to identify gene signatures of nasopharyngeal carcinoma and uncover potential mechanisms.

Local order and vibrational coupling of the C=O Stretching Mode of γ-Caprolactone in liquid binary mixtures.

The isotropic and anisotropic parts Raman spectra of γ-Caprolactone in the binary mixture at different concentrations have been measured. The non-coincidence effect (NCE) of γ-Caprolactone was determined in carbon tetrachloride solution and DMSO solution. The NCE of the ν(C=O) stretching mode in the γ-Caprolactone/DMSO mixtures exhibits a linear plot, in contrast to that in the γ-Caprolactone/CCl mixtures, which shows an upward (convex) curvature.

Joint quantitative measurement of hTERT mRNA in both peripheral blood and circulating tumor cells of patients with nasopharyngeal carcinoma and its clinical significance.

Background: The study was aimed to quantitatively detect mRNA levels of the catalytic subunit of telomerase (hTERT) in both peripheral blood and circulating tumor cells (CTCs) of patients with nasopharyngeal carcinoma (NPC) and explore its significance in early diagnosis and treatment of NPC.

Methods: hTERT mRNA levels in peripheral blood and CTCs of 33 NPC patients before and after treatment with intensity-modulated radiation therapy (IMRT) or/and chemotherapy and 24 healthy controls were measured using real-time quantitative PCR (qPCR) and their correlations to clinic pathological factors of NPC were analyzed.

Results: Peripheral hTERT mRNA content was 10.

Corrigendum: Study on the noncoincidence effect phenomenon using matrix isolated Raman spectra and the proposed structural organization model of acetone in condense phase.

This corrects the article DOI: 10.1038/srep43835.

[Clinical features of advanced adenoid cystic carcinoma in the nasal cavity and paranasal sinuses: analysis of 21 cases].

Objective: To evaluate the clinical characteristics, treatment and prognosis of advanced adenoid cystic carcinoma (ACC) in the nasal cavity and paranasal sinuses.

Methods: Twenty-one patients with advanced ACC in the nasal cavity and paranasal sinuses were treated in our department between February, 2007 and May, 2016. The clinical manifestations, T-stage, N-status, treatment, histological grade, recurrence and distant metastasis of the tumors were analyzed.

Utilization of Zn-containing electric arc furnace dust for multi-metal doped ferrite with enhanced magnetic property: From hazardous solid waste to green product.

One-step solid state reaction method was proposed for the first time to realize the transformation of the Zn-containing EAFD from hazardous solid waste to multi-metal doped ferrite with enhanced magnetic property. The effect of Zn-containing EAFD to NiCl·6HO mass ratio (R, g·g) on the phases transformation was investigated by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Raman spectroscopy. The as-synthesized samples were treated by toxicity characteristic leaching procedure (TCLP).

Study on the noncoincidence effect phenomenon using matrix isolated Raman spectra and the proposed structural organization model of acetone in condense phase.

The isotropic and anisotropic Raman spectra of acetone and deuterated acetone isolated in an argon matrix have been recorded for the understanding of noncoincidence effect (NCE) phenomenon. According to the matrix isolated Raman spectra and DFT calculations, we proposed aggregated model for the explanations of the acetone C=O vibration NCE phenomenon and its concentration effect. The experimental data were in consistence with the DFT calculations performed at the B3LYP-D3/6-311 G (d,p) levels based on the proposed model.

Transient, recurrent, white matter lesions in x-linked Charcot-Marie-tooth disease with novel mutation of gap junction protein beta 1 gene in China: a case report.

Background: Transient white matter lesions have been rarely reported in X-linked Charcot-Marie-Tooth disease type 1.

Case Presentation: We describe a 15-year-old boy who presented transient and recurrent weakness of the limbs for 5 days. His mother, his mother's mother and his mother's sister presented pes cavus.