In this paper, we first count the dance action motion information and compute different lengths of dance action videos through the threshold of segmentation as the input of a convolutional neural ...network. Combined with the two-layer level optimization function, the dance action trajectory values can be solved. The dance action trajectory values are compared with the standard action in terms of point distance, which suggests the location of the error for dance teaching assistance training. Finally, based on the three-dimensional data capture to establish a three-dimensional dance teaching model, the dance student’s various parts of the movement error results only between 0.25-2.21, the movement trajectory and the Kinect standard movement trajectory curve is highly fitted, and the dance amplitude, dance strength, dance consistency, dance standardization degree of performance is excellent.
At present, the complex and varying operating conditions of bearings make the feature extraction become difficult and lack adaptability. An end-to-end fault diagnosis is proposed. A convolutional ...neural network (CNN) is good at mining spatial features of samples and has the advantage of “end-to-end.” Gates recurrent neural (GRU) network has good performance in processing time-dependent characteristics of signals. We design an end-to-end adaptive 1DCNN-GRU model (i.e., one-dimensional neural network and gated recurrent unit) which combines the advantages of CNN’s spatial processing capability and GRU’s time-sequence processing capability. CNN is applied instead of manual feature extraction to extract effective features adaptively. Moreover, GRU can learn further the features processed through the CNN and achieve the fault diagnosis. It was shown that the proposed model could adaptively extract spatial and time-dependent features from the raw vibration signal to achieve an “end-to-end” fault diagnosis. The performance of the proposed method is validated using the bearing data collected by Case Western Reserve University (CWRU), and the results showed that the proposed model had recognition accuracy higher than 99%.
Highly siderophile elements such as Pt and Re are important tracers for Earth's crust–mantle differentiation. The behavior of Pt and Re in oxidized arc magmas are thought to be controlled by their ...strong partitioning into sulfides and/or magnetite. Disequilibrium fractionation of sulfide liquid was proposed to explain the Pt systematics in magmas when using sulfide liquid–silicate melt partition coefficients of Pt (DPtSul/Sil) of 105. However, the segregating sulfides are coexisting monosulfide-solid-solution (MSS) and Cu-rich sulfide liquid in thin island arcs, but mainly as MSS in thick continental arcs. Here we experimentally determine the MSS–silicate melt partition coefficients of Pt (DPtMSS/Sil) and magnetite–silicate melt partition coefficients of Re (DReMag/Sil) at 0.4–0.5 GPa, 1020–1100°C, and oxygen fugacity (fO2) from below FMQ-1.7 to ∼FMQ+2.5, using a piston cylinder apparatus. The results show that DPtMSS/Sil range between 20–8700 and increase with increasing Pt concentration (20–530 μg/g) in MSS at a given fO2, which can be explained by the presence of Pt-rich nuggets in MSS and the non-Henrian law behavior of DPtMSS/Sil. This finding suggests that Pt in oxidized arc magmas is much less chalcophile than previously thought. The obtained DReMag/Sil increase from 0.5 to 2.9 with fO2 decreasing from ∼FMQ+2.5 to FMQ+1, suggesting that Re is incompatible to slightly compatible in magnetite in oxidized arc magmas. Re dissolves as Re4+ in magnetite through the substitution of Re4+ + Fe2+ for 2Fe3+. The application of our new Ds together with previous Ds to a magmatic differentiation model, which involves an equilibrium fractionation of MSS and/or sulfide liquid, magnetite, and silicate minerals, can fully reproduce the evolution trends of Pt, Re, and Cu in oxidized, sulfide-saturated arc magmas. Our model results demonstrate that equilibrium fractionation of sulfides predominantly controls the behavior of Pt and Re in oxidized arc magmas with sulfide saturation.
•Determine monosulfide-solid-solution–silicate melt partition coefficients of Pt (DPtMSS/Sil).•DPtMSS/Sil of 20–8700 explained by non-Henrian law and presence of Pt nuggets in MSS.•Magnetite–silicate melt DRe are between 0.5–2.9 in oxidized arc magmas.•Equilibrium sulfide fractionation controls the Pt and Re behavior in oxidized arc magmas.
Oxidative stress induces various cardiovascular, neurodegenerative, and cancer diseases, caused by excess reactive oxygen species (ROS). It is attributed to the lack of sufficient antioxidant defense ...capacity to eliminate unnecessary ROS. Seaweeds are largely cultivated for their edible and commercial purposes. Excessive proliferation of some seaweeds has occurred in coastal areas, causing environmental and economic disasters, and even threating human health. Removing and disposing of the excess seaweeds are costly and labor-intensive with few rewards. Therefore, improving the value of seaweeds utilizes this resource, but also deals with the accumulated biomass in the environment. Seaweed has been demonstrated to be a great source of polysaccharides antioxidants, which are effective in enhancing the antioxidant system in humans and animals. They have been reported to be a healthful method to prevent and/or reduce oxidative damage. Current studies indicate that they have a good potential for treating various diseases. Polysaccharides, the main components in seaweeds, are commonly used as industrial feedstock. They are readily extracted by aqueous and acetone solutions. This study attempts to review the current researches related to seaweed polysaccharides as an antioxidant. We discuss the main categories, their antioxidant abilities, their determinants, and their possible molecular mechanisms of action. This review proposes possible high-value ways to utilize seaweed resources.
As a major area of dialogue between socio-economic history research and anthropology, land settlement, lineage development, worship of gods, the evolution of household registration system, and ethnic ...group issues all showed the dynamic process of the regional socio-cultural structure. The study of history was not only an account of people's agency in the social construction of territories, but also an examination of how historical narratives themselves were structured in the social construction of territories, and how this structure drove and constrained people's actions.
To constrain the behavior of chalcophile (sulfide-loving) elements during arc magmatic differentiation and to understand the formation conditions of Earth’s continental crust, the partition ...coefficients (D) of Mn, Co, Cu, Zn, As, Se, Mo, Ag, Cd, Sn, Sb, Te, Re, Au, Pb, and Bi between monosulfide-solid-solution (MSS), Cu-rich sulfide liquid (SL; containing 11–45 wt.% Cu), and hydrous silicate melt (SM) of basaltic to dacitic compositions were determined at 1000–1200 °C, 0.5–1.0 GPa, and fO2 1–1.5 log units above the fayalite–magnetite–quartz (FMQ) buffer. The DSL/SM values are 16–160 for Co, 1100–8400 for Cu, 50–220 for Se, 1200–5900 for Ag, 50–1800 for Cd, 700–3300 for Te, 15–510 for Re, 5700–90,000 for Au, 20–440 for Pb, and 140–3300 for Bi. The DSL/SM values for Mn, Zn, As, Mo, Sn, and Sb are below 1–40. The DMSS/SM values are 55–260 for Co, 530–1700 for Cu, 74–110 for Se, 30–110 for Ag, 4–40 for Cd, 15–70 for Te, 200–5900 for Re, and 140–270 for Au. The DMSS/SM values for Mn, Zn, As, Mo, Sn, Sb, Pb, and Bi are below 1–3. The DSL/SM of Au increase with increasing Cu content of the sulfide liquid, but the DSL/SM of the other elements little affected by the Cu concentration in the sulfide liquid. Because of their distinct dissolution mechanisms in the silicate melt, the DSL/SM and DMSS/SM of Mn, Co, Zn, Cd, Sn, and Pb are mainly controlled by the silicate melt FeOtot content (FeOtot); the DSL/SM and DMSS/SM for Re, Mo, As, Sb, and Bi are mainly controlled by FeOtot and fO2; the DSL/SM and DMSS/SM for Cu, Ag, and Au are mainly controlled by FeOtot and the content of reduced sulfur in the silicate melt; and the DSL/SM and DMSS/SM for Se and Te are mainly controlled by fO2. Using all available DSL/SM and DMSS/SM data, a partitioning model was developed for predicting DSL/SM and DMSS/SM of chalcophile elements as a multi-function of temperature, pressure, fO2, and silicate melt and sulfide compositions. Sulfide phase relations suggest that the sulfides precipitating from arc magmas containing >100 µg/g Cu in the silicate melt occur as Cu-rich sulfide liquid, whereas the sulfides precipitating from arc magmas containing 30–70 µg/g Cu in the silicate melt occur as mixed MSS and Cu-rich sulfide liquid. Modeling the Cu evolution trends of global arc magmas illustrates that the precipitating sulfides are dominantly MSS in continental arcs with a crustal thickness of >30 km, with the proportion of sulfide liquid being less than 20%; whereas, in island arcs with a crustal thickness of <20 km, the proportion of sulfide liquid may reach up to 90%. Applying the model to predict the evolution trends of Ag, As, Sn, Sb, Se, Mo, Re, Mo, Au, Pb, and Bi in global arc magmas under various fO2 conditions, we find that when no more than 10% of the precipitating sulfides are sulfide liquid, the chalcophile element patterns of oxidized magmas (0–1 log unit above FMQ) in continental arcs match that of Earth’s bulk continental crust, which implies that Earth’s continental crust formed mainly in oxidized continental arcs.
Seaweeds are some of the largest producers of biomass in the marine environment and are rich in bioactive compounds that are often used for human and animal health. Porphyran and carrageenan are ...natural compounds derived from red seaweeds. The former is a characteristic polysaccharide of
, while the latter is well known from
,
, and various
species, all in Rhodophyceae. The two polysaccharides have been found to have anti-cancer activity by improving immunity and targeting key apoptotic molecules and therefore deemed as potential chemotherapeutic or chemopreventive agents. This review attempts to review the current study of anti-cancer activity and the possible mechanisms of porphyran and carrageenan derived from red seaweeds to various cancers, and their cooperative actions with other anti-cancer chemotherapeutic agents is also discussed.
Improving the sulfur loading in cathodes is a significant challenge for practical lithium–sulfur batteries. Although carbonaceous sulfur hosts can achieve higher sulfur content and loading, the low ...tap densities of carbonaceous materials lead to low volumetric energy densities, restricting practical application. Here, conductive porous laminated vanadium nitride (VN) as a carbon-free sulfur host has been successfully developed to construct high tap density, high sulfur loading, and high energy density sulfur electrodes. The laminated stacking multiscale VN featuring interconnected holes possesses high storage space for sulfur loading, achieving high sulfur loading and utilization. VN@S materials’ sulfur content and tap density can achieve 80 wt % and 1.17 g cm–3, respectively. At the sulfur loading of 1.0 mg cm–2, the VN@S cathode reaches the reversible capacity of 790 mAh g–1 at 1 C after 200 cycles and 145.2 mAh g–1 at 15 C after 500 cycles. Precisely, at a high sulfur loading of 12.6 mg cm–2, the VN@S cathode delivers a reversible capacity of 518.8 mAh g–1 (485.6 mAh cm–3) at 0.1 C after 100 cycles.
Background/Aims: Long noncoding RNAs (lncRNAs) have been a research hotspot, as they play important roles in tumor development. However, their expression pattern and biological function in ...osteosarcoma have not yet been clarified. Methods: Differentially expressed lncRNAs in osteosarcoma and paracarcinoma tissues were identified by screening an lncRNA microarray, and candidate lncRNAs were verified by quantitative real-time PCR (qRT-PCR). A series of bioinformatics and molecular biological methods were adopted to investigate the interaction among lncRNA, microRNA (miRNA), and miRNA target genes during the development and occurrence of osteosarcoma. Cell viability was measured using a Cell Counting Kit-8 assay. Results: Chip microarray screening combined with the validation of differentially expressed candidate lncRNAs showed that the lncRNA small nucleolar RNA host gene 16 (SNHG16) had the largest fold change. SNHG16 was highly expressed in osteosarcoma tissues and cell lines, and its downregulation led to the suppressed proliferation of osteosarcoma cells. Further investigations revealed that SNHG16 could upregulate zinc finger E-box-binding homeobox 1 (ZEB1) expression by acting as an endogenous sponge of miR-205. Moreover, rescue assays proved that the effects of SNHG16 on the proliferation of osteosarcoma cells were dependent on miR-205. Conclusion: SNHG16 can significantly enhance the proliferation of osteosarcoma cells. In addition, SNHG16, miR-205, and ZEB1 interact in a common pathway during the development and occurrence of osteosarcoma, providing novel targets for intervention in the treatment of osteosarcoma.
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