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Objective To establish an animal model of autologous arteriovenous fistula in mice and evaluate its effect.Methods The left external jugular vein and common carotid artery of 10 8-week-old male C57BL/6 mice were separated by end-to-side anastomosis of external jugular vein and common carotid artery after anesthesia, and the right jugular vein was exposed without suture as a control, so as to establish an animal model of internal arteriovenous fistula. Doppler ultrasound, HE and Masson staining and immunohistochemical staining were used to observe the hemodynamics, intimal hyperplasia and protein expression of smooth muscle cell proliferation in the outflow vein of the internal arteriovenous fistula and the contralateral control vein, and to evaluate the effect of model construction.Results A total of 10 mice were selected for this study, and 9 mice were successfully modeled, with a success rate of 90%. Ultrasound examinations were performed on the day of surgery, 7 and 14 days after surgery, respectively. The results showed that the flow velocity near the anastomosis was linearly correlated with the diameter of the tube. The higher the flow velocity, the larger the diameter of the tube. There was a positive correlation between peak velocity and lumen diameter (P=0.000 6, R2=0.831 7). After surgery 14 days, HE staining results showed that after autologous arteriovenous fistula molding, the average lumen area of outflow segment vein was significantly decreased (P < 0.000 1), the intima area was significantly increased (P < 0.000 1), the intimal area was significantly increased (P < 0.000 1). On the surgical side of arteriovenous fistula, collagen deposition was significantly increased, and the proportion of Masson-positive regions was significantly increased (P < 0.000 1). Immunohistochemical staining showed that the proportion of collagen 1 positive areas on the surgical side of arteriovenous fistula was significantly upregulated (P < 0.000 1), and α-smooth muscle actin (α-SMA) , proliferating cell nuclear antigen (PCNA) positive cells increased significantly (P < 0.000 1), indicating an increase in local cell proliferation level.Conclusion The established mouse autologous arteriovenous fistula model has the advantages of high success rate, good stability and low cost. The model provides a good carrier for exploring the biological mechanism of intimal hyperplasia in arteriovenous fistulas.

Images captured in inadequate illumination or uneven brightness conditions are prone to suffer from loss of detail and reduced contrast. Self‐powered BiOI/WO3 heterojunction PDs with bidirectionally regulated ultraviolet (UV) and visible dual‐band photoresponse characteristics can help to solve the problems. By varying the growth time of BiOI nanoflakes (NFs) on WO3 nanorod arrays (NRs), different stoichiometric ratios and crystal and band structures of BiOI are achieved. The I− ions migration inside the BiOI controlled by applying a pre‐bias voltage can induce the accumulation of polarized charges at the heterojunction interface, then alter the width of the depletion region as well as the height of the interface barrier, which in turn affects the dynamics of photo‐generated carriers. Upon applying a positive (negative) pre‐bias, the self‐powered photocurrent decreases (increases) in the UV band, whereas increases (decreases) in the visible band. Based on BiOI/WO3 heterojunction PDs, a machine vision imaging system is designed, which enhances image contrast and detail in strong and weak light conditions. This system facilitates rapid feature extraction and recognition, advancing the development of intelligent, real‐time digital machine vision systems. [ABSTRACT FROM AUTHOR]

Background: Research on food addiction has increased significantly in recent years. It has been demonstrated that food addiction can lead to impairments in physiological, psychological, and social functioning in individuals. However, there is a lack of studies investigating the influence of how individuals handle social situations on food addiction and the specific mechanisms involved. Method: A cross-sectional survey was conducted with 1,151 university students, with a mean age of 21.44 (SD = 4.77) years. The sample comprised 74.46% female and 25.54% male students. Participants completed the Chinese version of the modified Yale Food Addiction Scale 2.0, the Social Physique Anxiety Scale, the Expressive Suppression Scale, and the Social Avoidance and Distress Scale. Statistical analyses were performed using SPSS 26.0 and the Process (Version 3.4) plug-in. Result: The results of the study supported our hypothesis that the association between social physique anxiety and food addiction symptoms could be partially explained by expressive suppression and social avoidance and distress. This association remained significant even after adjusting for covariates such as gender, number of cigarettes smoked per day, bedtime, education, and BMI. Specifically, more severe social physique anxiety was found to be associated with frequent use of expressive suppression and social avoidance and distress, which in turn was associated with more severe food addiction symptoms. Conclusion: This study explored the role of expression suppression and social avoidance and distress in the relationship between social physique anxiety and food addiction symptoms. The findings provide a theoretical basis for developing interventions for food addiction in college students. These interventions could include helping students develop a healthy perception of body image, encouraging emotional expression, and promoting active social participation to reduce food addiction symptoms. [ABSTRACT FROM AUTHOR]

Traditional optical communication using single narrow-band photodetectors (PDs) has poor confidentiality because all information and data are exposed to free space. With the development of science and technology, even the optical communication in the solar-blind ultraviolet (UV) band carries the risk of eavesdropping. Dual-band PDs have potential applications in secure and reliable optical communication through a combination of optical encryption and algorithmic encryption. In this paper, self-powered Cu2O/Ga2O3 heterojunction PDs with solar-blind UV-visible photodetection were fabricated. By adjusting the pH value of the Cu2O electrolyte, the crystallization quality and grain orientation of the Cu2O thin film were improved, and the interface transfer resistance of the heterojunctions was decreased. The Cu2O/Ga2O3 PDs fabricated in Cu2O electrolyte with a pH value of 9.5 demonstrated the optimized solar-blind UV-visible photoresponse characteristics. In the absence of applied bias, the device exhibited a responsivity of 0.12 mA W−1, a rise time of 2.48 ms and a fall time of 11.72 ms at 254 nm. The responsivity reaches 19 mA W−1 when illuminated at 475 nm, and the rise and fall times are 0.96 and 9.12 ms, respectively. Utilizing the excellent photoresponse characteristics of the solar-blind UV-visible band, the device was used to design and demonstrate a proof-of-concept optical communication system for secure data transmission. The proposed system features two independent light channels, utilizing solar-blind UV light as the information carrier and visible light for key transmission. By implementing specific algorithms, this design ensures safe and reliable communication. [ABSTRACT FROM AUTHOR]

High‐performance broadband photodetectors (PDs) are essential components in spectroscopy, remote sensing, imaging, and light communication applications. In this paper, Sb2Se3 nanoparticles (NPs) are uniformly deposited on TiO2 nanorod arrays (NRs) to construct a type II heterojunction with good interfacial contact by a simple two‐step potentiostatic electrochemical deposition method combined with N2 atmosphere annealing at 280, 290 and 300 °C to control the amount of Se in Sb2Se3. A good interfacial contact between Sb2Se3 and TiO2 is conducive to the separation and transport of photogenerated carriers. Sb2Se3/TiO2 PDs exhibit excellent self‐powered photoresponse in a broad spectral range from ultraviolet‐visible‐near infrared (UV‐VIS‐NIR) due to the combined effects of high light absorption, low defect density, and more suitable band alignment. The optimal parameters with a responsivity of 13.48 A W−1, detectivity of 7.9 × 1011 Jones, and response time of 18/20 µs are demonstrated for the PDs annealed at 290 °C. The excellent performance broadband Sb2Se3/TiO2 PDs are used to construct the application models in the light communication for light encryption and flaw detection. This work opens up a new strategy for Sb2Se3/TiO2 PDs in multifunctional applications. [ABSTRACT FROM AUTHOR]