Abstract In this article, carbon/kevlar hybrid composites were prepared using Vacuum Assisted Resin Infusion (VARI). The sandwich structure with plain carbon weave fabric as the core layer and kevlar surface was selected reinforcement solution of epoxy resin curing agent matrix. low velocity impact experiment compression after (CAI) carried out on samples at different ratio temperatures, mechanical response loads analyzed respectively. results show that specimen can limit delamination defect...

Abstract The influence of matrix viscosity on the mechanical behavior fiber reinforced composites was investigated in this paper. glass fabric selected as reinforcement and mixed solution composed resin, curing agent different diluent matrix. fabricated by vacuum‐assisted resin infusion (VARI). bending, impact creep properties were studied varying mass fraction 1,4‐butanediol diglycidyl ether (BDDGE) diluent, least square fitting used to fit experimental result. mathematical model for...

This study aimed to assess the psychometric properties of Existential Fulfillment Scale (EFS) in a Chinese university student sample, emphasizing cultural fit scale. A cohort 1,600 undergraduate students from six universities Fujian Province completed questionnaires including EFS, Meaning Life Questionnaire (MLQ), Index Well-Being (IWB), and Self-Depression (SDS). We conducted item analysis, exploratory factor analysis (EFA), confirmatory (CFA), assessments criterion-related validity,...

Abstract Background Microsurgical training should be implemented with consideration of operative difficulties that occur in actual clinical situations. We evaluated the effectiveness a novel scenario simulator for step-by-step microsurgical progressed from conventional to escalated additional obstacles. Methods A device was designed according multiple and intricate microsurgery scenarios. Twenty surgical residents no experience were randomly assigned either control group (conventional...

Recently, safety protection research on the risk of flammable gas leakage and deflagration between adjacent offshore facilities is easy to be ignored fire explosion accidents are also harmful interactive operations, causing great injury personnel damage structures. In this paper, analysis a disaster carried out an FPSO semisubmersible support platform connected it side by side. The diffusion mechanism explored with CFD method. integrated consequences assessment indirect determines accident...

Abstract The launch vehicle sea system is a typical strong nonlinear complex coupled system. There relative motion between the and frame-type launcher in offshore wind wave environment. multiple impact loads adapters guideways are discontinuous. contact velocities different. strain rate of polyurethane foam should be considered adapter model. Based on experimental data compression, more accurate modified phenomenology macroscopic model established. Dynamic models with without effects...

Laser Speckle Contrast Imaging (LSCI) as the advantages of high speed, wide field view, and ease implementation has been widely used for imaging blood flow vascular deformation during Vascular targeted Photodynamic Therapy (V-PDT). However, uncorrected direction or scale kernel failed to improve visualization vessels derived from poor Signal Noise Ratio (SNR) micro V-PDT. In this study, we extracted adaptive directional using dual-wavelength reflection enhance laser speckle imaging. The in...

Image restoration based on total variation has been widely studied owing to its edgepreservation properties.In this study, we consider the infimal convolution (TV-IC) image model for eliminating mixed Poisson-Gaussian noise.Based alternating direction method of multipliers (ADMM), propose a complete splitting proximal bilinear constraint ADMM algorithm solve TV-IC model.We prove convergence proposed under mild conditions.In contrast with other algorithms used solving model, does not involve...

Vegetable commodities are indispensable parts of the current consumer market. Vegetables possess different characteristics such as seasonality, perishability and so on. Thus, it is critical to formulate reasonable automatic pricing replenishment strategies for vegetable commodities. However, previous kinds literature have either ignored some attributes vegetables or restricted their application regions specific situations. This review compares pros cons diverse linear programming methods...

Objective: To explore the effectiveness of a chest compression device combined with extended self-care for scar prevention in patients following keloid excision surgery. Methods: Forty (36 lesions) who underwent surgery at Department Plastic and Reconstructive Surgery, First Medical Center, PLA General Hospital from June 2022 to 2024 were selected. They randomly divided into an experimental group control group, 20 each group. The received traditional elastic garment therapy, while used...

Objective: To investigate the effect of a chest compression device for scar prevention combined with nurse-patient WeChat group on formation after keloid excision. Methods: Forty patients wall keloids who underwent excision surgery at Department Plastic and Reconstructive Surgery, First Medical Center PLA General Hospital from June 2022 to 2024 were selected. They randomly divided into two groups: observation (20 cases) control cases). Both groups routine excision, followed by therapy 6...

Abstract In this paper, the mechanical properties of carbon/Kevlar hybrid fiber‐reinforced resin composites at different temperatures were studied. The prepared by Vacuum Assisted Resin Infusion (VARI). sandwich structure reinforcement consists Kevlar plain weave fiber as a surface layer and carbon fabric core layer, while matrix curing agent epoxy resin. bending tensile composite specimens tested using in situ testing method, separately. fracture morphology was analyzed scanning electron...

The total variation infimal convolution (TV-IC) model combining Kullback–Leibler and ℓ2-norm data fidelity term works well for the inverse problem of mixed Poisson–Gaussian noise. Most existing algorithms solving TV-IC rely on Newton method to solve a nonlinear optimization subproblem, which inevitably increases computation burden. In this study, we apply first-order primal–dual Chambolle-Pock algorithm model. particular, present an effective subproblem joint proximal operator with...