The creep behavior of Ultra-High-Performance Concrete (UHPC) was investigated by machine learning (ML) and SHapley Additive exPlanations (SHAP). Important features were selected feature importance analysis, including water-to-binder ratio, aggregate-to-cement compressive strength at loading age, elastic modulus duration, steel fiber volume content, curing temperature. Four typical ML models—Random Forest (RF), Artificial Neural Network (ANN), Extreme Gradient Boosting Machine (XGBoost),...

Allelopathy has been considered not only as an environmentally friendly approach for weed control but also a potential reason causing autotoxicity in crop production. In this study, the responses of seeds lettuce, wheat, rice, clover broomrape (CB), and sunflower (SB) to root exudates rice cultivars were studied. Lettuce germination was promoted by Yliangyou 3218 I-Kung-Pao. Wheat seedling growth inhibited all nine species. I-Kung-Pao Ganxin 203 exerted greater than other cultivars. Yongyou...

Abstract Distribution factors (DFs) for one typical cross-section as specified in the AASHTO LRFD specification can be varied when bridge parameters such span length, loading lanes and skew are changed. The diversity between design actual DFs may To study this diversity, paper presents an evaluation of lateral load prefabricated hollow slab bridges. response was recorded during field test. This test divided into two stages: a concentrated force on girder that settled supports before girders...

Abstract BACKGROUND: Water bamboo shoot (WBS) ( Zizania caduciflora L.) is a fleshy aquatic vegetable susceptible to lignification. In this study, effects of 1‐methylcyclopropene (1‐MCP) anti‐ethylene treatment on lignification harvested peeled WBS were investigated. RESULTS: Peeled shoots treated with 0.5 µL L −1 1‐MCP for 20 h at °C and then stored up 9 days. Sensory quality, lignin content activities the lignification‐associated enzymes peroxidase (POD) phenylalanine ammonia lyase (PAL)...

Accumulation of advanced lipoxidation end products (ALEs) has been implicated in many chronic and degenerative diseases. In this study, we evaluated the effects malondialdehyde (MDA), trans ‐2‐heptenal, , ‐2,4‐heptadienal on properties native proteins formation bovine serum albumin (BSA)–ALEs. Incubation BSA with these aldehydes resulted modification Lys Arg residues, conformational changes, colored, fluorescent, lipofuscin‐like pigments (exhibiting strong fluorescence for MDA–BSA, but much...

Abstract BACKGROUND: Loquat fruit is susceptible to microbial decay and quality deterioration during postharvest distribution. In this study, in a search for effective alternatives methods currently used maintenance, the effects of short‐term pre‐storage N 2 treatment on antioxidant ability loquat were investigated. RESULTS: fruits exposed 100% 6 h at 20 °C then stored 5 35 days. Short‐term significantly delayed increase rate decreases total soluble solid titratable acidity contents, thereby...

There are differences between the dynamic deflection and bending moment (strain) in same section of continuous girder bridges. However, selection response for calculating amplification factors (DAFs), which essential bridge health monitoring safety assessment, remains controversial. Modes may play a role relationship DAF both numerical analysis field tests. To investigate distinctions DAFs bridge, functional expressions were derived, taking into account multi-factor coupling under...

In order to investigate the analysis and processing methods for nonstationary signals generated in bridge health monitoring systems, this study combines advantages of complete ensemble empirical mode decomposition (CEEMD) wavelet threshold denoising algorithms construct CEEMD–wavelet algorithm. The algorithm follows following steps: first, add noise data obtain all components through (EMD), denoise with using function remove components, select optimal stratification Guozigou Bridge Xinjiang...

The main objective of this paper is to study the dynamic load allowance (DLA) calculation methods for bridges according response curve. A simply-supported concrete bridge with a smooth road surface was taken as an example. half-vehicle model employed calculate deflection and bending moment in mid-span section under different vehicle speeds using vehicle-bridge coupling method. Firstly, DLAs from conventional code provisions were analyzed critically evaluated. Then, two improved computing...

Accurate acquisition of dynamic load allowance (DLA) based on measurement data is essential to the safety assessment a bridge. When static tests cannot be achieved, and filtering fails, estimated DLAs from experimental method vary widely due choice left or right band. In this paper, proposed weighted average (WAM) used possibly solve above problem in continuous gird bridges. Two-span three-span precast concrete box-gird bridges were selected optimize intercepted segments WAM for first time...

The deflection dynamic load allowance (DLA) of stiff bridges with high piers requires sub-millimeter accuracy. New technologies such as the vision-based optical method and GNSS are not yet recognized for use in DLA measurements due to their smaller SNR. Presently, scaffolding is widely utilized tests owing reliability employing rigid contact. When available, engineers have resort a suspension hammer system. However, mass eccentricity hammer, stretched-wire length, wind will decrease...

The pull-out method is a simple and effective for detecting the preload of suspension bridge cable clamp bolts. However, research on currently limited. force principles governing bolt during pulling process are unclear, relationship between tension desired remains uncertain. This paper aims to explore bolts detection through combined approach theoretical analysis, full-scale test, finite element simulation. results indicate that increases process. detected by not initial bolt, but rather it...

Abstract In order to better understand the flight performance and kinematics of flapping wing aircraft designed developed based on principle bionics, a space crank rocker mechanism was tried carry out virtual prototype design bionic in motion, this basis, its movement characteristics were analyzed. Analyzing mechanisms scale laws common flying organisms yields various physical estimation parameters that affect characteristics. Flight patterns motion are analyzed principles seabirds,...