Digital Commons Network^™

Effect Of Corn Stover Oil On Rheological Properties Of Aged Asphalt And Its Regeneration Effect, Cheng Peifeng, Bai Yue, Li Yiming, Zhang Zhanming

Journal of China & Foreign Highway

Corn stover oil，as a kind of bio-oil，is low-carbon and renewable.At the same time，it may restore the performance of aged asphalt.In order to further promote the application of corn stover oil in road engineering，this study explored the effect of corn stover oil as a kind of regeneration agent on the rheological properties of aged asphalt through laboratory experiments and analyzed the regeneration effect.On this basis，the regeneration mechanism of corn stover oil regeneration agent was revealed by using an infrared spectroscopy test and gel permeation chromatography test.The results show that the addition of corn stover oil changes the proportion of aged asphalt …

Optimization Of Mix Proportion For New Jersey Precast Concrete Safety Barriers And Performance Tests Under Integral Concrete Vibrating, Chen Lin, Li Beian, Li Yuanrui, Zhao Zixiang

Journal of China & Foreign Highway

New Jersey safety barriers are the most commonly used form of guardrails in highway median separators due to their excellent safety protection.In response to the cost reduction and quality improvement，efficient and rapid preparation process，and quality issues of New Jersey precast concrete safety barriers，this article adopted the automation production process of New Jersey precast safety barriers，optimized concrete mix proportion for precast safety barriers，and studied their performance.The experimental results show that in the designed C 30 concrete，the compressive strength of the concrete mixed with 15% fly ash reaches 39.2 MPa，and th e slump reaches 185 mm.The concrete performance meets the requirements of …

Curing Law And Road Performance Of Polyurethane Mixture, Sun Shengkai, Zheng Mao, Tang Xiong, Liu Li, Zhong Shengran, Si Te

Journal of China & Foreign Highway

Polyurethane mixture is composed of polyurethane binder，rubber particles，and stones.Compared with ordinary asphalt mixture，it has the characteristics of a higher content of rubber particles and large void ratios.This article first tested the viscosity-time curve and viscosity-temperature curve of one-component polyurethane and determined the compaction temperature of the polyurethane mixture.Based on the rutting test，three-point bending test，water immersion Marshall test，freeze-thaw splitting test，and pendulum friction test，the road performance of the polyurethane mixture under different replacement amounts of rubber particles was tested.The research results show that the mixing temperature of PU- 1 polyurethane mixture can be basically controlled between 73 ℃ and 81 ℃，and it …

Elimination Method Of Temperature Lag Effect In Deformation Monitoring Data Of Cable‑Stayed Bridge Structures, Liu Hongshuang, Zhai Wenqiang, Zeng Guoliang

Journal of China & Foreign Highway

There is a temperature lag effect in the deformation monitoring data of the bridge structure.Eliminating the temperature lag effect is of great significance in the health monitoring of the bridge structure.Based on the linear correlation between the deformation of the bridge structure and the temperature，this paper applied the goodness of fit test and proposed a time-domain translation elimination method.On this basis，by taking the long-term synchronous monitoring of the tower inclination，beam end displacement，main girder deflection，and temperature data of a cable-stayed bridge as an example，this method was used to eliminate the temperature lag effect in the deformation monitoring data and compared with …

Dynamic Response Analysis Of Bridge Under Combined Action Of Random Traffic Flow And Wind Based On Simpack Platform, Xiong Tao, Han Yan, Ma Xingchuan, Li Qianming, Yan Naijie, Zhang Fei, Hu Peng

Journal of China & Foreign Highway

To deal with the time-consuming problem of calculating the dynamic responses of the bridge under the combined action of random traffic flow and wind，a steel box continuous girder bridge was taken as the engineering background，and the finite element model of the bridge and the vehicle model were established in the commercial software Ansys and SIMPACK，respectively.Then，the dynamic responses of the bridge subjected to the single vehicle load，wind loads，and multiple vehicle loads were calculated to verify the superposability of the dynamic responses of the bridge.On this basis，the Monte Carlo method was used to generate the random traffic flow samples.By using the verified …

Sensitivity Analysis Of Parameters Of Cable‑Stayed Bridges With Full Floating Spatial Frame, Liu Anqing, Yan Tengfei, Zheng Pengju, Gu Yanlin, Li Jie, Wang Qiang

Journal of China & Foreign Highway

In order to clarify the influence of design parameters on the mechanical behavior of a cable-stayed bridge of a floating system，a finite element model of the bridge was established by using the finite element analysis software MIDAS/Civil based on a single-tower double-cable plane steel-concrete composite beam cable-stayed bridge with full floating spatial frame.The sensitivity of parameters such as temperature effect，secondary dead load，and support system in the completed bridge state was analyzed and compared with the semi-floating system of the bridge.The results show that temperature and secondary dead load have a significant impact on the deflection and stress of the main …

Experimental Study On Shear Behavior Between Nrc‑Uhpc Interface, Chen Zhenkan, Li Junsheng, Shi Quan, Fang Haozhen, Mo Fan, Jiang Haibo

Journal of China & Foreign Highway

In order to investigate the effect of the screw diameter of planted bars and ultra-high performance concrete （UHPC） pouring method on the shear behavior of normal reinforced concrete （NRC） and UHPC， two groups of six push-out specimens were designed for shear behavior tests.The results show that after the failure of the concrete bonding force in the NRC-UHPC interface，the screw can maintain shear behavior so that the failure process of the specimen after the load reaches the peak shows ductile characteristics.For specimens with screw diameters of 12 mm and 16 mm，greater screw diameter indicates higher shear capacity of the specimens and …

Design And Construction Process Of Cross‑Beam Supports For Main Tower Of Changtai Changjiang River Bridge, Zeng Jian, Hu Pei, Wang Chao

Journal of China & Foreign Highway

The construction of the lower cross-beam structure of the main tower of Changtai Changjiang River Bridge has the characteristics of high construction height，large amount of concrete earth volume，and difficult control of down-warping deformation.In order to implement the pouring of the lower cross-beam of the main tower，floor-type steel pipe supports were set at the lower cross-beam，which were used to support the lower cross-beam formwork and bear the load during the concrete pouring.Through the finite element software analysis and calculation，it was found that the asymmetric deformation of the main structure of the lower cross-beam could be effectively controlled，and the overall force of …

Segment Connection Mod E For Stiffening Girder Hoisting Construction Of Long‑Span Steel Truss Girder Suspension Bridge, Shao Guangmiao, Pan Q Uan, Yan Donghuang, Xu Hongsheng

Journal of China & Foreign Highway

In the process of stiffening girder construct ion of a long-span steel truss girder suspension bridge，different connection modes of stiffening girder segments will directly affect the internal force，alignment，and bridge state of the structure during construction.By taking the construction of the stiffening girder of a bridge as the research background，the finite element model of the whole process of the bridge was established.The advantages and disadvantages of the segmented hinge method and the segmented rigid connection method were compared，and the two-two segmented rigid connection scheme was proposed.On this basis，according to the changing law of steel truss section alignment and lower chord opening …

Research On T‑Beam System With Diaphragm Based On Intelligent Construction, Liu Lang, Tao Qiyu, Xu Qigang

Journal of China & Foreign Highway

The traditional precast T-beam faces issues such as excessive diaphragms，difficult formwork installation and removal，and low levels of intelligence in intelligent bridge construction.To address these issues，this paper focused on the optimization of the number of diaphragms and the application of prefabricated diaphragms.By analyzing different diaphragm configuration schemes and comparing the contributions of prefabricated diaphragms and precast diaphragms to the lateral stiffness of the bridge，this paper deeply explored the impact of diaphragms on bridge performance.The research results indicate that the T-beam system with fewer diaphragms is feasible in intelligent construction，but the system without diaphragms places higher demands on the performance of bridge …

Determination Of Manufacturing Parameters Of Large Section Of Continuous Steel Box Beam With Variable Section In Shenzhen‑Zhongshan Passage, Dong Chuangwen, Chen Long, Li Chuanxi

Journal of China & Foreign Highway

Accurate calculation of manufacturing parameters is the key to the efficient，high-precision，and rapid installation of large sections of continuous steel box beam bridges.Taking the steel box beam with the variable section in Shenzhen-Zhongshan Passage as the background，this paper first established a finite element model of the beam element in the whole construction process to obtain the pre-camper.Secondly，the average neutral axis position was calculated based on the height of the neutral axis of each beam section.Then，according to the deformation characteristic that the beam length remained unchanged at the mean neutral axis，the pre-camber was superimposed at the mean neutral axis to get the …

Key Technology For Construction Of New Single‑Wall Steel Suspended Box Cofferdam With High Pile Tied Beams In Deep Water, Yang Jinlong, Zhao Lin, Jiang Qunlong

Journal of China & Foreign Highway

In order to ensure the safe，efficient，and economical completion of the construction of the high pile tied beam of Muping Xiangjiang River Bridge in deep water，a new type of single-wall steel suspended box cofferdam was designed to act as the water retaining and enclosure structure during high pile tied beam construction according to the characteristics of deep water level and shallow stratum cover layer at the high pile tied beam location.Through the innovative design of steel casing on the bottom of the steel suspended box cofferdam，the design height of the wall panel and the amount of steel input were reduced.On the …

3d Reconstruction Method Of Tunnel Surrounding Rock Fracture Based On Vtk, Liu Houxiang, Su Heng

Journal of China & Foreign Highway

Fracture parameters are important reference factors for surrounding rock stability analysis.To realize the visualization analysis of surrounding rock fractures，this paper proposed a three-dimensional （3D） reconstruction method of surrounding rock fractures based on the visualization toolkit （VTK）.Firstly，the collected tunnel surrounding rock images were preprocessed by OpenCV for image grayscale and noise reduction.Secondly，the Otsu method and the open operation in morphology were used to segment the image，and the complete surrounding rock fracture map was obtained.Then，the median method was used to replace the linear interpolation method with the traditional Marching Cubes algorithm in VTK to calculate the equivalent point，and the improved Marching Cubes …

Surface Grouting Reinforcement Technology For Shallowly Buried Tunnel In Coastal Zone, Xiang Ze, Deng Shiping, Sheng Zhang, Zhou Ye, Wang Wei, Pei Yabing

Journal of China & Foreign Highway

The Ⅵ level surrounding rock section of a project water intake tunnel is located in the coastal zone，with thick overlying sand layers，broken surrounding rock，and other characteristics.To address these issues，laboratory tests were conducted to explore the effect of water glass volume dosing on the final setting time and strength of cement-sodium silicate （CS） liquid slurry，and field tests were carried out for a comprehensive analysis of grouting methods.The constraint-dispersion mode was finally determined to divide the grouting area into several small grouting units.Advance plastic pipe grouting reinforcement was performed according to the grouting sequence of the outermost circle hole interval first，followed by …

Key Technology For Incremental Launching Construction Of Double Guide Beam Of Steel Box Girder, Sun Xiaoqiang, Yue Xinxing

Journal of China & Foreign Highway

By taking the incremental launching construction of the steel box girder at the 6th hole of the approach bridge of Baoji Taigu Bridge as the engineering background，the original plan adopted single-guide beam multi-point walking incremental launching technology for assembly and incremental launching on the prestressed reinforced concrete beam of the adjacent hole.Since the middle span of the concrete beam cannot withstand the concentrated force at the incremental launching points，the multi-guide beam multi-point walking incremental launching technology was finally used to arrange the incremental launching points at the transverse diaphragm plate of the end of the concrete beam.By increasing the incremental …

Influence Factors Of Carbonization Of Tunnel Segment Structure And Life Prediction Analysis, Li Dongbiao, Miao Miao, Shen Caihua, Chen Wei

Journal of China & Foreign Highway

There are many factors that affect the carbonization life of concrete segments in underwater tunnels，and the prediction methods are not uniform.In this paper，combined with actual engineering，the influencing factors and laws of carbonization of concrete segments in underwater tunnels were analyzed，and three methods for predicting the life of concrete segments were established with the crack limit as the control target.The prediction results of the three methods were compared.The results show that the influence of the temperature and CO2 concentration in the tunnel predicted by the three methods on the life of the tunnel lining structure is basically consistent with the existing …

Emergency Vehicle Dispatching Model Considering Demand Urgency And Delivery Fairness, Long Kejun, Liu Jia, Gao Zhibo, Chen Suqian, Zhang Zhonggen

Journal of China & Foreign Highway

In emergency vehicle dispatching after unexpected events，it is crucial to prioritize critical nodes with high demand urgency while minimizing excessive delivery delays at other nodes to prevent secondary impacts.On this basis，this study developed an emergency vehicle dispatching model that considered demand urgency and delivery delay fairness.Firstly，the entropy weight-TOPSIS method was used to calculate the demand urgency for each node，and a delivery delay balance index was introduced to minimize disparities in delivery delays between nodes.Secondly，a multi-objective optimization model was established with total delivery time，overall cost，and delivery delay balance as objectives，while considering constraints such as inventory levels at distribution centers and route …

Research And Practice On Demolition Of Lane Separator In Same Direction Along Zhengzhou‒Luoyang Section Of Lianyungang‒Khorgos Expressway, Zhang Nan, Ji Xiang, Ma Gang

Journal of China & Foreign Highway

In order to solve the problem arising after the demolition and closure of the lane separator in the same direction along the expressway，this paper systematically introduced the reconstruction method of the lane separator in the same direction by studying the overhaul project along Zhengzhou-Luoyang section of Lianyungang‒Khorgos Expressway.The paper explored the main diseases and potential safety hazards existing in the lane separator in the same direction by checking the compliance of specifications，analyzing the traffic operation status，exploring the characteristics of traffic accidents，and investigating the traffic safety facilities.On this basis，it demonstrated the feasibility of demolishing the lane separator in the same direction.According …

Linkage Control Method For Expressway Toll Stations And Plane Intersections, Lei Qing, Wang Zhaoyong, Wu Yurong, Jiang Weiwei, Luo Zhongbin

Journal of China & Foreign Highway

In order to solve the problem of vehicle queuing overflow caused by the mismatch between the expressway toll stations and the capacity of plane intersections，the formula for calculating the maximum queue length was given by analyzing the traffic operation characteristics between toll stations and plane intersections and considering vehicles ’ lane-changing behavior.Due to the strong coupling of the traffic operation between toll stations and plane intersections caused by a short distance between them，a unified linkage control optimization model was established.The research shows that if the queue length in the connecting direction of the plane intersections exceeds the allowable maximum queue …

Working Properties Of Steel Tube Batter Piles With Concrete Infill Based On Abaqus, Yang Meiliang, Li Liemin, Sun Kunjiang, Han Rui, Zhong Yang

Journal of China & Foreign Highway

In order to explore the respons e characteristics of steel tube batter piles with concrete infill under vertical load，the steel tube batter pile with concrete infill used in Saribas Bridge in Malaysia was taken as the research object.Based on the numerical simulation method，the frictional resistance of the inner and outer walls of the steel tube，the frictional resistance around the pile at the section，and the bending moment bearing ratio between the steel tube and the concrete core of this type of batter pile under vertical load were studied.The results show that the passive-side frictional resistance of the 0–15 m pile section …

Generative Ai And Professional Technical Writers: A Mixed-Method Study, Jarrett Schaefer

Theses and Dissertations

This research investigates how professional technical writers use AI technology in their work today, which tools they are using, and which tasks they use them for. Using a mixed-methods research design, the study involved 21 participants completing a survey hosted in Qualtrics, and three participants interviewed over Zoom. Quantitative analysis was performed on the survey data, and the researcher used grounded theory to analyze the transcripts of the interview participants. The findings offer insight into how professional technical communicators use these tools and their attitudes toward including AI technologies in future pedagogies. While most participants had used AI technology in …

Advancements In Qtl Mapping And Gwas Application In Plant Improvement, Muhammad Tanveer Altaf, Muhammed Tatar, Amjad Ali, Waqas Liaqat, Parnaz Mortazvi, Ceyhun Kayihan, Fati̇h Ölmez, Muhammad Azhar Nadeem, Jazib Javed, Jin-Ying Gou, Meng-Lu Wang, Ummad Ud Din Umar, Hayri̇ye Yildiz Daşgan, Cemal Kurt, Mehtap Yildiz, Sheikh Mansoor, Abdelfattah A. Dababat, Nafiz Çeli̇ktaş, Faheem Shehzad Baloch

Turkish Journal of Botany

Molecular markers play a crucial role in modern plant breeding by enabling the precise identification of genetic loci associated with important agronomic traits. This article focuses on the advancements in Quantitative Trait Locus (QTL) mapping and Genome-Wide Association Studies (GWAS), which are pivotal in identifying and dissecting complex traits such as stress tolerance, yield improvement, and nutrient efficiency. Through QTL mapping, significant genetic regions linked to desired traits are identified, while GWAS leverages larger populations for higher resolution in genetic association studies. The integration of next-generation sequencing, CRISPR, and transcriptomics technologies has revolutionized the precision and efficiency of these methods, …

Identification Of Genes Associated With Zinc And Copper Concentrations In Walnut (Juglans Regia L.) By Gwas Analysis, Berfi̇n Nazlican Kaman, Bülent Yağmur, Erdal Orman, Muhammed Bahatti̇n Tanyolaç, Duygu Ateş

Turkish Journal of Botany

154 walnut genotypes from various geographic regions were analyzed in the study. Micronutrient concentrations of zinc (Zn) ranged from 1.61 to 8.98 mg/100 g, and the concentrations of copper (Cu) varied between 0.12 and 0.38 mg/100 g. 16,473 SNPs were generated using Diversity Array Technology (DArT) for genome-wide association (GWAS) studies. The Mixed Linear Model (MLM) utilizing the Q + K model revealed seven associated markers for the element Zn in 2021 and four in 2022. The MLM (Q + K) model indicated two associated markers for the element Cu in 2021 and three in 2022. The markers found in …

Gene Expression Changes In The Seagrass Cymodocea Nodosa Individuals In Response To Aquatic Acidification, Enes Göksal, Esra Öztürk Yi̇ği̇t

Turkish Journal of Botany

Human activities have caused a rise in atmospheric carbon dioxide (CO2) levels, leading to greater absorption of CO2 by oceans and causing ocean acidification. This phenomenon, marked by a reduction in pH, represents substantial risks to marine ecosystems, including seagrass meadows. Seagrasses are vital elements of coastal ecosystems, performing important functions in carbon storage, stabilizing shorelines, and preserving biodiversity; however, reactions to ocean acidification are not well understood, especially in terms of molecular.This research study examined alterations in gene expression within seagrass meadows, namely the species Cymodocea nodosa, in reaction to simulated ocean acidification conditions. Climate chamber system to adjust …

Building Bridges An Inclusive Practices Toolkit To Empower Neurodivergent Adults In The Workplace, Gloria Saldana

Student Theses and Dissertations

In this toolkit, designed for managers of neurodivergent employees, we will dig into the complexities of neurodivergence, specifically of Autism Spectrum Disorder (ASD). This toolkit aims to promote inclusivity within the workplace. We need to bridge the gap in improving neurodivergence education by understanding characteristics and communication differences, identifying cues, stigma, and consequences of actions ( e.g., bullying). Prioritizing each person's needs allows neurodivergent individuals and employers to discover natural talents and thrive within a diverse society. Through interactive sessions and practical exercises, managers will learn strategies for clear and concise communication, facilitating smoother collaboration, and initiating changes in the …

Effects Of Deliberate Practice On Psychomotor Skill Retention In Nursing Students, Annette Oberhaus

School of Nursing Faculty Publications

Psychomotor skills are considered a foundational block for nursing education, yet the approach to teaching these skills varies from program to program.

The goal of this quality improvement project is evaluation of the effects of a systematic change in the method of instructing nursing students in psychomotor skills. The hypothesis is that the use of Deliberate Practice for instruction will promote long-term skill proficiency and retention.

Barry Conservation Camp Health Form, Andy Schafermeyer

UNH Cooperative Extension

No abstract provided.

Gene-Environment Interactions In Non-Alcoholic Fatty Liver Disease: Insights From Mexican American Populations, Eron G. Manusov, Vincent P. Diego, Marcio Almeida, Jacob Galan, Auwal A. Bala, Marco Arriaga, Natasha Garcia-Rodriguez, Renee Hernandez, Satish Kumar, John Blangero, Sarah Williams-Blangero

School of Medicine Publications

Nonalcoholic Fatty Liver Disease (NAFLD) is a prevalent and complex condition influenced by both genetic and environmental factors. This chapter explores the genotype-by-environment interactions that contribute to the development and progression of NAFLD in the Mexican American population. Using advanced genetic epidemiology and bioinformatics approaches, we investigated how specific genetic variants interact with environmental factors such as depression, acculturation stress, and social determinants of health, to influence NAFLD risk and severity. Our findings reveal significant genotype-by-environment interactions for key NAFLD-related traits, including HbA1c, AST/ALT ratio, and steatosis-controlled attenuation parameter (CAP). We also discuss the application of cutting-edge proteomic and transcriptomic …

Navigating Displacement: Jewish-Brazilian Identity In Lasar Segall's Encontro, Kendall Evonne Da Silva

Theses and Dissertations

Jewish-Lithuanian artist Lasar Segall's 1924 painting Encontro has historically been interpreted as representing Segall's integration and assimilation into Brazilian society. This reading, however, generally overlooks Segall's experience as an Eastern European Jew living in Brazil during the early twentieth century. In this thesis, I examine the influence of Segall's ethnic background on his art and investigate how Segall appropriates pardo identity in Encontro, not unproblematically, in an effort to convey feelings of alienation and exclusion. Along with looking at his visual art, my analysis incorporates my translations of Segall's essays on Jewishness, which shed light on his relationship to Judaism …

Programs Agenda 12-17-24, Angela Brock

Programs Committee (PC)

No abstract provided.