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A novel method ICF (Identifying point correspondences by Correspondence Function) is proposed for rejecting mismatches from given putative point correspondences. By analyzing the connotation of homography, we introduce a novel concept of correspondence function for two images of a general 3D scene, which captures the relationships between corresponding points by mapping a point in one image to its corresponding point in another. Since the correspondence functions are unknown in real applications, we also study how to estimate them from given putative correspondences, and propose an algorithm IECF (Iteratively Estimate Correspondence Function) based on diagnostic technique and SVM. Then, the proposed ICF method is able to reject the mismatches by checking whether they are consistent with the estimated correspondence functions. Extensive experiments on real images demonstrate the excellent performance of our proposed method. In addition, the ICF is a general method for rejecting mismatches, and it is applicable to images of rigid objects or images of non-rigid objects with unknown deformation.

This paper describes the mechanism underpinning modal staging behaviour in screeching jets. An upstream-propagating subsonic guided-jet mode is shown to be active in all stages of screech. Axial variation of shock-cell spacing manifests in the spectral domain as a series of suboptimal peaks. It is demonstrated that the guided-jet mode may be energized by interactions of the Kelvin–Helmholtz wavepacket with not only the primary shock wavenumber peak, but also suboptimal peaks; interaction with suboptimals is shown to be responsible for closing the resonance loop in multiple stages of jet screech. A consideration of the full spectral representation of the shocks reconciles several of the classical models and results for jet screech that had heretofore been paradoxical. It is demonstrated that there are multiple standing waves present in the near field of screeching jets, corresponding to the superposition of the various waves active in these jets. Multimodal behaviour is explored for jets in a range of conditions, demonstrating that multiple peaks in the frequency spectra can be due to either changes in which peak of the shock spectra the Kelvin–Helmholtz wavepacket is interacting with, or a change in azimuthal mode, or both. The absence of modal staging in high-aspect-ratio non-axisymmetric jets is also explained in the context of the aforementioned mechanism. The paper closes with a new proposed theory for frequency selection in screeching jets, based on the observation that these triadic interactions appear to underpin selection of the guided-jet mode wavelength in all measured cases.

Among cultivated tea plants ( ), only four mitogenomes for var. (CSA) have been reported so far but none for var. (CSS). Here, two mitogenomes of CSS (CSSDHP and CSSRG) have been sequenced and assembled. Using a combination of Illumina and Nanopore data for the first time. Comparison between CSS and CSA mitogenomes revealed a huge heterogeneity. The number of the repetitive sequences was proportional to the mitogenome size and the repetitive sequences dominated the intracellular gene transfer segments (accounting for 88.7%- 92.8% of the total length). Predictive RNA editing analysis revealed that there might be significant editing in NADH dehydrogenase subunit transcripts. Codon preference analysis showed a tendency to favor A/T bases and T was used more frequently at the third base of the codon. ENc plots analysis showed that the natural selection play an important role in shaping the codon usage bias, and Ka/Ks ratios analysis indicated and genes may have undergone positive selection. Further, phylogenetic analysis shows that six clustered together, with the CSA and CSS forming two distinct branches, suggesting two different evolutionary pathway. Altogether, this investigation provided an insight into evolution and phylogeny relationship of mitogenome, thereby enhancing comprehension of the evolutionary patterns within species.

It is significant to promote food tourism behavior. This paper aims to build a comprehensive behavior model of tourists suitable for food tourism to promote such tourism in Chongqing city, China. The paper deals with the place-bound and people-bound memories affecting tourist satisfaction, perceived holiday quality of life, and experience loyalty in the food tourism industry. The data were collected from 413 tourists who have experience traveling to Chongqing city through the online questionnaire. Multi-layer perceptron artificial neural network simulation provides a basis for factor ranking for structural equation modeling. The results show that place-bound and people-bound factors can predict experience memory, experience satisfaction, holiday quality of life, experience loyalty, and destination loyalty. In addition, it reveals the mediating role of experiential memory and contributes to the process of memory formation. Place-bound factors emphasize the vital role of marketing and social media information. They are consistent with the actual food experience of tourists at the destination. People-bound factors explained the different aspects of the food experience. The noteworthy aspects are intelligence, emotion, sense, behavior, and natural flow experience. The research results show that tourists, local governments, and tourism departments should focus on developing memory structures with local characteristics and improving quality and experienced food tourism destinations so that tourists can gain more sensory experiences or other experiences to attract more food tourists.

To investigate the status quo and influencing factors of overall frailty and its 3 domains among rural community-dwelling older adults. This is a cross-sectional study. A convenience sample of 195 older adults from 6 villages in Bashang Area of Zhangjiakou City, Hebei Province, China, were recruited from August to September, 2022. The demographic characteristics, the Chinese version of Tilburg Frailty Indicator, Charlson Comorbidity Scale and Hospital Anxiety and Depression Scale were used to investigate frailty and its influencing factors. Univariate analysis and multiple linear regression analysis were employed. The prevalence of overall frailty among the older adults in Bashang Area was 85.13%. Multiple linear regression analysis showed that age, gender, marital status, regular exercise, comorbidity, and anxiety were the influencing factors of overall frailty. While anxiety was the only shared influencing factor for physical frailty, psychological frailty, and social frailty, age, gender, marital status, financial burden, the comorbidity, and regular exercise were factors which influenced 1 or 2 domains of frailty. The prevalence of overall frailty among the older adults in rural areas, Zhangjiakou City is high. It is influenced by many factors. Medical staff and policy makers should work hand in hand to improve frailty among rural community-dwelling older adults in China.

A large reservoir of soil nitrate in desert subsoil zones has been demonstrated in previous studies; however, information on the subsoil nitrate reservoir and its distribution characteristics in the deserts of China is still limited. This study investigated the distribution patterns of soil total nitrogen (N), nitrate, ammonium and stable isotopic ratios of 15 N (δ 15 N) in shallow (1 m) and subsoil (5 m) profiles in three types of dunes in the Mu Us desert of China. We found that soil N retention of the fixed and semi-fixed dunes followed a progressive nutrient depletion pattern in shallow soil profiles, whereas the subsoil nitrate of the fixed, semi-fixed and mobile dunes maintained a conservative accumulation pattern. The results indicate that the subsoil of the Mu Us desert may act as a reservoir of available nitrate. Furthermore, a soil δ 15 N analysis indicate that the nitrate content of the fixed dune is likely derived from soil nitrification, whereas the nitrate content in the mobile dune is derived from atmospheric nitrate deposition. Within the context of looming climate change and intensifying human activities, the subsoil nitrate content in the deserts of northern China could become mobilized and increase environmental risks to groundwater.

Arteriovenous fistula (AVF) and arteriovenous graft (AVG) stenosis are common complications among hemodialysis patients, necessitating repeated interventions due to neointimal hyperplasia and restenosis. Percutaneous transluminal angioplasty (PTA), while a standard treatment, faces challenges in long-term efficacy. The DKutting Scoring Balloon, a novel advancement in scoring balloon technology, incorporates triangular scoring elements and non-compliant balloon material to create controlled micro-incisions in the vessel wall, aiming to enhance procedural precision, reduce vessel trauma, and lower restenosis rates. In the largest study of its kind, this retrospective analysis conducted at Beijing Haidian Hospital evaluated the device's performance across 428 patients with significant AVF and AVG stenosis. The findings indicate primary patency rates of 98.1%, 90.8%, and 78.0% at 1, 3, and 6 months, respectively. Subgroup analyses revealed patency rates of 79.9% for AVF and 75.4% for AVG at 6 months, demonstrating its effectiveness even in resistant and recurrent cases. Importantly, no major adverse events were reported, underscoring the device's safety profile. These observational findings suggest that the DKutting Scoring Balloon may offer favorable outcomes compared to those typically reported with conventional PTA, though these results should be interpreted as hypothesis-generating and further randomized controlled trials are recommended to corroborate these findings and optimize its integration into clinical practice.

Background Acute kidney injury (AKI) is a common complication that affects the outcomes of patients undergoing percutaneous coronary intervention (PCI). The triglyceride–glucose (TyG) index, a metric computed from fasting blood triglyceride and glucose levels, is closely associated with poor PCI outcomes. This study examined the association between the TyG index and incidence of AKI in patients undergoing PCI. Methods Clinical information was obtained from the Medical Information Mart for Intensive Care IV database, which contains clinical data on 70,000 patients admitted to the intensive care unit at Beth Israel Deaconess Medical Center from 2008 to 2019. In total, 435 patients who underwent PCI were enrolled in this retrospective study, and they were categorized according to their AKI status, TyG quartiles, and diabetes mellitus (DM) history to analyze their baseline characteristics. The association of the TyG index with the risk of AKI was assessed using restricted cubic spline regression and logistic regression models. Subgroup analyses were also performed in patients with and without DM. Results Compared with the non-AKI population, patients with AKI who underwent PCI had a higher mean TyG index (p = 0.004). The restricted cubic spline regression model revealed a linear correlation between the TyG index and AKI risk (p for nonlinear = 0.123) in patients undergoing PCI. A high TyG index was a risk factor for AKI in non-DM subgroup, as well as in patients with BMI < 28 (odds ratio [OR] = 1.77; p = 0.050) and those with no history of diabetes (OR = 1.83; p = 0.047) or COPD (OR = 1.56; p = 0.030). Conclusions This study highlighted the role of the TyG index as a predictive biomarker for AKI in patients without DM undergoing PCI, providing clinicians with a tool for identifying high-risk individuals for early intervention.

Sediments contaminated by heavy metals (HMS) pose detrimental effects on both the public health and ecosystem. In our study, sediment samples were collected from Hangzhou Section of Beijing-Hangzhou Grand Canal. Based on heavy metals concentrations measured, the pollution status assessments were conducted adopting three methods namely the Nemerow index (P N ), single factor index (P i ) and potential ecological risk index(RI). The order of concentration of heavy metals investigated is as follows: Zn>Cd>Cu≈As≈Pb≈Ni≈Cr. T2 and T7 sites had high level pollution based on PN characterized by Zn and Cd accumulation. Based on the findings of the RI assessment, site T2 reached a higher risk level toward the human and ecological environment in which Cd was the chief contributor.

The continuous emergence of Essentially Derived Varieties (EDVs) in the process of tea tree breeding will endanger and affect the innovation ability and development potential of tea tree breeding. In this study, genotyping by sequencing (GBS) technology was used to screen high-quality genomic SNPs for the first time to investigate the derived relationships of 349 tea trees from 12 provinces in China. A total of 973 SNPs uniformly covering 15 tea tree chromosomes with high discrimination capacity were screened as the core SNP set. A genetic similarity analysis showed that 136 pairs of tea trees had a genetic similarity coefficient (GS) > 90%, among which 60 varieties/strains were identified as EDVs, including 22 registered varieties (19 were indisputably EDVs). Furthermore, 21 SNPs with 100% identification of 349 tea trees were selected as rapid identification markers, of which 14 SNP markers could be used for 100% identification of non-EDV. These results provide the basis for the analysis of the genetic background of tea trees in molecular-assisted breeding.