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At present, 3D modeling technology is simplified due to the improvement of image segmentation algorithm and feature point detection and other related technologies, so it is widely used in major museums. For example, science and technology museums can display emerging scientific and technological models by using 3D modeling, while museums and art galleries can display works of art and antiques by using 3D modeling. By using 3D modeling to display, tourists can effectively enhance the sense of substitution. 3D sculpture is a brand new product under this technical background, which can enhance the vividness of the exhibition of works in the Expo Park, thus bringing tourists a better tour experience. Based on this background, this study introduces the image segmentation algorithm to adjust and optimize 3d sculpture works, and introduces the main optimization process. Then, modeling, modification and model reconstruction are carried out through the collection and calculation of multi angle pictures. In this process, file content import, model data import and 3d object image import are required. The simulation results show that the optimized 3d model can effectively improve the frame rate performance of the model, but also reduce the volume, number of faces and vertex points of the model to a certain extent. It is an effective and innovative research work to optimize 3d sculpture by using image segmentation algorithm. This paper introduces the image segmentation algorithm into the field of 3d sculpture to achieve technological innovation. [ABSTRACT FROM AUTHOR]

This study aimed to elucidate the mechanisms of yellow mealworm (Tenebrio Molitor , YM) in intestinal immunity and health. Largemouth bass, as an enteritis modeling animal, were fed 3 diets containing YM at 0% (YM0), 24% (YM24) and 48% (YM48). The YM24 group had reduced levels of proinflammatory cytokines, while the YM48 group experienced a negative impact on intestinal health. Next, the Edwardsiella tarda (E. tarda) challenge test consisted of 4 YM diets, 0% (EYM0), 12% (EYM12), 24% (EYM24), and 36% (EYM36). The EYM0 and EYM12 groups exhibited intestinal damage and immunosuppression by the pathogenic bacteria. However, the above adverse phenotypes were attenuated in the EYM24 and EYM36 groups. Mechanistically, the EYM24 and EYM36 groups enhanced intestinal immunity in largemouth bass via activating NFκBp65 and further upregulating survivin expression to inhibit apoptosis. The results identify a protective mechanism of YM as a novel food or feed source by improving intestinal health. • A dietary content of 24% yellow mealworm (Tenebrio Molitor , YM) reduces the proinflammatory cytokines responses. • Dietary contents of 0% and 12% YM exhibited fish intestinal damage and immunosuppression after Edwardsiella tarda challenge. • Dietary contents of 24% and 36% reversed the pathological adverse effects after Edwardsiella tarda challenge.Dietary contents of 48% of YM negatively affects gut health and microbiota. • YM relieves intestinal damage by enhancing the activation of the NFκB/survivin signaling pathway. [ABSTRACT FROM AUTHOR]

• Suzhou Wu Chinese has undergone a tone split with the low register tones having low pitch and breathy voice. • We compare the breathy voice in the low register tones across age groups. • The breathy voice is decreaing for younger speakers. • Younger female speakers are ahead of younger male speakers in the decrease of breathy voice. • There are tone changes in Tone 2 and Tone 8. In some languages, breathy voice plays a pivotal role in tone split. After tone split, breathy voice can undergo further changes. Suzhou Wu Chinese used to have a voicing contrast in initial obstruents, which has transphonologized to a tone contrast and resulted in a two-way tone split, with breathy voice in the low register tones. This study investigates the change in breathy voice after the tone split in Suzhou Wu with apparent-time data from speakers from three age groups. Simultaneous audio and electroglottographic recordings were collected. Principal component analysis and linear discriminant analysis conducted on the acoustic measurements indicate that breathy voice is used less by younger speakers. Generalized Additive Mixed Models were conducted to reveal the changes in breathy voice during the time course of the vowel with regard to different low register tones. It is also found that T2 and T8 are undergoing a decrease in breathy voice with tone changes, but breathy voice is decreasing without tone change in T6. Younger female speakers are ahead of younger male speakers in the decrease in breathy voice. This paper provides a valuable investigation of the change in breathy voice after tone split and contributes to our understanding of the development of phonation types. [ABSTRACT FROM AUTHOR]

[Display omitted] • A novel luminescent metal–organic complex (MOC) 1 has been synthesized, which has unique structure. • Complex 1 is the first three-dimensional (3D) coordination polymer constructed from ppda and Co2+ ions. • Comple x 1 can be regarded as a potential fluorescent probe for nitro-aromatic complexes (NACs) and Fe3+ ions. • Mechanism of luminescence sensing for NACs and Fe3+ ions were discussed. A luminescent Co (II)-based coordination polymer [Co 2 (bta)(ppda)(H 2 O) 2 ] n (1) (H 4 bta = 1,2,4,5-benzenetetracarboxylic acid and ppda = p -phenylenediamine) was synthesised by hydrothermal method and characterized by single-crystal X-ray diffraction, which is the first three-dimensional (3D) coordination polymer constructed from ppda and Co2+ ions. Furthermore, fluorescence studies indicated that 1 displays high sensitivity for both nitroaromatic complexes and Fe3+ ions via fluorescence quenching effect. [ABSTRACT FROM AUTHOR]

• A novel luminescent Zn-MOF 1 has been synthesized and structurally characterized. • Complex 1 is a 3D MOF constructed from the rare ligand p -phenylenediamine. • Complex 1 can be regarded as a potential chemical sensor for nitroaromatics (NACs) and Fe3+. • Mechanism of luminescence sensing for NACs was investigated. In this work, a novel three-dimensional (3D) complex [Zn 2 (bta)(ppda)] n (1) (H 4 bta = 1,2,4,5-benzenetetracarboxylic acid, ppda = p -phenylenediamine) has been synthesized under hydrothermal condition. Complex 1 exhibits high sensitivities towards the nitroaromatics (NACs) and Fe3+ ions in dimethylsulfoxide (DMSO) solution via fluorescence quenching. Specially, 1 as a fluorescence probe for sensing the Fe3+ ions has a large quenching coefficient K sv of 8.823 × 106 M−1 and a low limit of detection (LOD) of 4.664 × 10−4 μM. [ABSTRACT FROM AUTHOR]

Formic acid is an appealing hydrogen storage material. In order to rapidly produce hydrogen from formic acid under relatively mild conditions, high-efficiency and stable photocatalytic systems are of great significance to prompt hydrogen (H2) evolution from formic acid. In this paper, an efficient and stable photocatalytic system (CdS/P/MoS2) for H2 production from formic acid is successfully constructed by elemental P doping of CdS nanorods combining with in situ photodeposition of MoS2. In this system, P doping reduces the band gap of CdS for enhanced light absorption, as well as promoting the separation of photogenerated charge carriers. More importantly, MoS2 nanoparticles decorated on P-doped CdS nanorods can play as noble-metal-free cocatalysts, which increase the light adsorption, facilitate the charge transfer and effectively accelerate the hydrogen evolution reaction. Consequently, the apparent quantum efficiency (AQE) of the designed CdS/P/MoS2 is up to 6.39% at 420 nm, while the H2 evolution rate is boosted to 68.89 mmol·g−1·h−1, which is 10 times higher than that of pristine CdS. This study could provide an alternative strategy for the development of competitive CdS-based photocatalysts as well as noble-metal-free photocatalytic systems toward efficient hydrogen production. [ABSTRACT FROM AUTHOR]

[Display omitted] • A new La-MOF (1), has been successfully synthesized by employing H 4 L. • 1 has good chemical stability and thermostability. • 1 can detect TNP and Fe3+ with high selectivity and sensitivity in water. • 1 shows the great anti-interference ability and repeatability. A new Lanthanum-based luminescent metal–organic framework, {[La(H 2 O) 4 (HL)]·H 2 O} (1), has been successfully synthesized by employing 3,3′,5,5′-azodioxybenzenetetracarboxylic acid (H 4 L) as a rigid organic linker through the solvothermal reactions. 1 exhibits a two-dimensional (2D) layered structure and a three-dimensional (3D) supramolecular structure is formed by hydrogen bonds between the layers. Stability studies indicate that 1 has good chemical stability and thermostability. Meanwhile, the K sv values for TNP is 4.61 × 104 M−1 with the LOD of 4.13 × 10-6 M and the K sv value for Fe3+ is 1.22 × 104 M−1 with the LOD of 1.72 × 10-5 M, respectively, which demonstrated that 1 exhibits high sensitivity and excellent selectivity for the detection of TNP and Fe3+ via fluorescence quenching. Significantly, 1 shows high regenerability after five recycling progress for sensing Fe3+. The possible mechanisms associated with the luminescent quenching are discussed in detail through some relevant experiments and tests, as well as the DFT calculations. Based on the above excellent properties of 1 , it will have extremely potential to be used as a dual functional sensor for both detecting TNP and Fe3+ in aqueous solution, simultaneously. [ABSTRACT FROM AUTHOR]

p–p orbital interaction through Mg(II) isovalent doping in methylammonium lead chloride perovskite significantly enhances the electronic properties while not affecting the optical bandgap. This chemical behaviour shows promising applications to optoelectronic devices. [ABSTRACT FROM AUTHOR]

New 1-D SnO2@C core-shell nanochains built into 3-D superstructures are presented for the first time as anode materials for lithium-ion batteries. These novel SnO2@C core-shell nanochains exhibit desirable lithium storage properties. [ABSTRACT FROM AUTHOR]

Rational design of high-efficiency heterostructure photocatalyst is an effective strategy to realize photocatalytic H 2 evolution from pure water, but remains still a considerable challenge. Herein, an anatase/rutile TiO 2 /g-C 3 N 4 (A/R/CN) multi-heterostructure photocatalyst was prepared by a facile thermoset hybrid method. The combination of two type-II semiconductor heterostructures (i.e., A/R and R/CN) significantly improve the separation and transfer efficiency of photogenerated carriers of anatase TiO 2 , rutile TiO 2 and g-C 3 N 4 , and A/R/CN photocatalyst with high activity is obtained. The optimal A/R/CN photocatalyst exhibits significantly increased photocatalytic overall water splitting activity with a rate of H 2 evolution of 374.2 μmol g−1h−1, which is about 8 and 4 times that of pure g-C 3 N 4 and P25. Moreover, it is demonstrated to be stable and retained a high activity (ca. 91.2%) after the fourth recycling experiment. This work comes up with an innovative perspective on the construction of multi-heterostructure interfaces to improve the overall photocatalytic water splitting performance. Image 1 • Anatase/rutile TiO 2 /g-C 3 N 4 (A/R/CN) multi-heterostructure was prepared. • The heterostructure can effectively separate and transfer photogenerated carriers. • The A/R/CN hybrids exhibite efficient photocatalytic overall water splitting. • The A/R/CN shows excellent stability and reusability. [ABSTRACT FROM AUTHOR]

Abstract A novel luminescent metal-organic framework (MOF) {[Co 3 (phen) 2 (HL) 2 ]·(H 2 O) 2 } n (1) (H 4 L = 3,3′,5,5′-azoxybenzenetetracarboxylic acid, phen = Phenanthroline) was successfully prepared under solvothermal conditions. Its structure has been identified by single-crystal X-ray diffraction, infrared spectroscopy, elemental analysis, powder X-ray diffraction and thermogravimetric analysis. Additionally, the importance of the weak interactions to stabilize the structure of 1 has been discussed by Hirshfeld surfaces and the corresponding 2D fingerprint plots (FPs). Remarkably, 1 has high thermal stability up to 360 °C and excellent chemical stability in water with wide pH range of 2–11. Luminescence studies show 1 can recognize Fe3+ and Al3+ with high selectivity from mixed metal ions in aqueous solutions through the luminescence quenching and enhancement phenomenon, respectively. Furthermore, 1 can also detect PA with good selectivity and sensitivity among large common nitro-aromatic compounds (NACs). Graphical abstract A novel Co(II) metal-organic framework as a multi-functional luminescent sensor exhibits a highly selective luminescence quenching to Fe3+ and picric acid, and highly sensitive luminescence enhancement for Al3+in aqueous solution. fx1 Highlights • A novel luminescent MOF 1 has been synthesized and structurally characterized. • MOF 1 can detect Fe3 + and Al3 + ions through different luminescence responses. • MOF 1 can also be a potential sensitivity chemosensor for PA. • Mechanism of luminescence sensing for Fe3 + , Al3 + and PA was investigated. [ABSTRACT FROM AUTHOR]

To design an effective fluorescence probe for sensing nitroaromatic compounds (NACs) and metal ions, a novel two-dimensional (2D) coordination polymer, {Zn2(NO3)2(4,4′-bpy)2(TBA)} (1) {H2TBA = 4-(1H-tetrazol-5-yl)-benzoic acid, 4,4′-bpy = 4,4′-bipyridine} was synthesized via a hydrothermal method. As expected, 1 presented varying degrees of fluorescence intensity changes for detecting and recognizing trace NACs with high selectivity and sensitivity in water solution. Moreover, 1 not only exhibited a highly selective fluorescence quenching effect on Fe3+ ions in aqueous solution, but could also resist the interference of various other metal ions. In addition, it has been found that the fluorescence quenching mechanisms among NACs and Fe3+ ions are mainly related to the interactions between the host group and guest molecules by energy and electron transfer. [ABSTRACT FROM AUTHOR]

Flexible sensors have attracted extensive attention in the field of human-computer interaction. However, it is still a challenging task to realize accuracy gesture recognition with flexible sensor, which requires sensor not only have high sensitivity, but also have appropriate strain detection range. Here, a high gauge factor flexible sensor (gauge factor ∼ 1296 under 12–20 % strain) based on crack structure is reported. The sensor is made of a biodegradable and stretchable gelatin composite combined with fabric bases, with good repeatability (6000 cycles) and a fast response (60 ms). Because of the double-layer structure, it has a suitable detection range (20 % strain). The sensor is manufactured by a screen-printing process, and it has been used to make data gloves and has realized 9 gestures recognition with machine learning algorithm (99.6 % accuracy). In general, this study offers a wearable gestures recognition scheme through the proposed sensor. [ABSTRACT FROM AUTHOR]

Novel small-mesopores-enriched porous carbon microspheres have been synthesized from carbonaceous polysaccharide microspheres, by using the associated lithium acetate treating and heat treating strategies. X-ray diffraction, scanning electron microscope, transmission electron microscopy and nitrogen adsorption-desorption techniques have been employed to investigate the as-prepared samples. The analysis results indicate that the porous carbon microspheres has a high specific surface area of 1163 m 2 g −1 and a satisfactory small mesoporous texture (2∼5 nm), with the mean pore size of 3.24 nm and the pore volume ratio of 2∼5 nm pores up to 92%. The capacitive performances of the samples in 6 mol L −1 KOH aqueous electrolyte, have been tested by cyclic voltammetry, electrochemical impedance spectroscopy and charge-discharge techniques. A specific capacitance of 171.5 F/g is obtained for the porous carbon microspheres via charge-discharge at a current density of 1000 mA/g. It also displayed a very high cycle stability of 97.8%, compared with the initial capacitance, after 1000 cycles at the high current density of 1000 mA/g. [ABSTRACT FROM AUTHOR]

Highlights: [•] Novel hybrid architecture of BiPO4 NRs and mesoporous g-C3N4 was first presented. [•] The mesoporosity of g-C3N4 endowed with high S BET for the hybrid architecture. [•] In situ growth provided direct physical and electronic contact for the components. [•] The catalysts showed great enhanced visible-light-driven photocatalytic activity. [ABSTRACT FROM AUTHOR]

Abstract: Poly-hydrogen cyanide (PHC) nanofibers were prepared by directly heating the formamide (HCONH2) in a stainless-steel autoclave at 200°C. The composition and structure of the products were characterized by X-ray diffraction, transmission electron microscopy, UV–vis diffuse reflectance spectrum, thermogravimetric analysis, Fourier transform IR, Raman and X-ray photoelectron spectroscopy. The results showed that the as-prepared nanofibers are graphite-like structure C/N ratio of 1.23. The as-prepared nanofibers exhibited higher photocatalytic activities by degradation of methyl orange (MO) than N-TiO2 under visible light irradiation. [Copyright &y& Elsevier]