Search results for: Lin Lang

Items from 1 to 20 out of 32 results

article

Analytical solution for Fredlund–Hasan unsaturated consolidation using mode superposition method

Quan Yuan, Qian He, Lin Lang, Xiaobing Yang

International Journal for Numerical and Analytical Methods in Geomechanics > 47 > 17 > 3234 - 3247

This note presents an exact analytical solution of Fredlund–Hasan consolidation for unsaturated soils under an arbitrary loading using the mode superposition method. Air pressure and water pressure are expressed in a series of products of Eigen functions with respect to depth and normal coordinates with respect to time, respectively. A pressure function substitutes for the related homogeneous problem...

article

Prevalence and genotype distribution of high‐risk human papillomavirus infection among women with cervical cytological abnormalities in Chongqing, China, 2014–2020

Qinli Luo, Lin Lang, Na Han, Ling Liang, more

Diagnostic Cytopathology > 49 > 12 > 1237 - 1243

Background Persistent infection with high‐risk human papillomavirus (HR‐HPV) is the main leading cause of cervical precancerous lesions and cervical cancer. This study aims to explore the epidemiological characteristics of HR‐HPV genotypes and their correlation with the ThinPrep cytological test (TCT) results among women in Chongqing, in China. Methods In this retrospective study, cervical exfoliations...

article

Diabetic wound healing: The impact of diabetes on myofibroblast activity and its potential therapeutic treatments

Rou Wan, Joshua P. Weissman, Kendra Grundman, Lin Lang, more

Wound Repair and Regeneration > 29 > 4 > 573 - 581

Diabetes is a systemic disease in which the body cannot regulate the amount of sugar, namely glucose, in the blood. High glucose toxicity has been implicated in the dysfunction of diabetic wound healing, following insufficient production (Type 1) or inadequate usage (Type 2) of insulin. Chronic non‐healing diabetic wounds are one of the major complications of both types of diabetes, which are serious...

article

Study of crack arrest mechanism and dynamic behaviour using arc‐bottom specimen under impacts

Lin Lang, Zheming Zhu, Shuai Deng, Caoyuan Niu, more

Fatigue & Fracture of Engineering Materials & Structures > 43 > 9 > 2040 - 2054

In this paper, a large size trapezoidal open crack with arc‐bottom (TOCAB) configuration specimen was proposed. Experiments were carried out using 0°, 60°, 90° and 120° TOCAB specimens under drop weight impacts with loading rate from 150 to 350 GPa/s. The crack length and crack speed were calculated by using fractal method. It shows that the crack speed corrected by fractal method is more than 12%...

article

The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

Qin Zhou, Zheming Zhu, Xiong Wang, Jiali Zhou, more

Fatigue & Fracture of Engineering Materials & Structures > 42 > 11 > 2544 - 2557

Brittle material usually contains plenty of cracks or micro‐cracks, which raises a question that how a pre‐existing crack affects a running crack as they are approaching. In order to investigate such issue, impact experiments were conducted by using double crack semi‐circle (DCSC) specimens. Polymethyl methacrylate (PMMA) was selected to make the DCSC specimens, and a modified SHPB system was used...

article

Molecular dynamics simulations of the characteristics of Mo/Ti interfaces

Mengzi Luo, Li Liang, Lin Lang, Shifang Xiao, more

Computational Materials Science > 2018 > 141 > C > 293-301

The study of the diffusion bonding of Mo-Ti interface is of very importance to joint the composite structures. In the present work, new analytical interatomic potentials for Mo, Ti and Mo-Ti alloy have been developed. Based on those potentials, the diffusion bonding of Mo-Ti interface has been investigated, in which the temperature effect and orientation dependence are studied detailedly by using...

article

Formation mechanism of 0.4-nm single-walled carbon nanotubes in AlPO4-5 crystals by low-temperature hydrocracking

Wenshen Yang, Lin Lang, Xiuli Yin, Chuangzhi Wu

Carbon > 2017 > 115 > C > 120-127

The carbonization mechanism of tripropylamine (TPA) in low-temperature hydrocracking was studied with the aim of increasing the quality and filling density of single-walled carbon nanotubes (SWCNTs) produced in the channels of AlPO₄-5 crystals. The conversion process of TPA was investigated using a combination of Fourier transform infrared spectroscopy, mass spectrometry, ¹³C nuclear magnetic resonance...

article

Molecular dynamics simulations of the structure evolutions of Cu-Zr metallic glasses under irradiation

Lin Lang, Zean Tian, Shifang Xiao, Huiqiu Deng, more

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions... > 2017 > 393 > C > 77-81

Molecular dynamics simulations have been performed to investigate the structural evolution of Cu_64.5Zr_35.5 metallic glasses under irradiation. The largest standard cluster analysis (LSCA) method was used to quantify the microstructure within the collision cascade regions. It is found that the majority of clusters within the collision cascade regions are full and defective icosahedrons. Not only the...

article

Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals

Lin Lang, Shuheng Zhao, Junfei Jiang, Wenshen Yang, more

Microporous and Mesoporous Materials > 2016 > 235 > C > 143-150

Many attempts have been made for template removal from inorganic porous materials at mild temperature (below 350 °C), because high-temperature calcination is attributed as the trigger of the framework damages. In this study, a new two-step method, coupling by low-temperature hydrocracking and oxidation, is proposed for efficient removal of the organic templates in high-silica MFI zeolite crystals...

article

Compliant landing of a trotting quadruped robot based on hybrid motion/force robust control

Lin Lang, Jian Wang, Qing Wei, Hong-xu Ma

Journal of Central South University > 2016 > 23 > 8 > 1970-1980

A compliant landing strategy for a trotting quadruped robot on unknown rough terrains based on contact force control is presented. Firstly, in order to lower the disturbance caused by the landing impact force, a landing phase is added between the swing phase and the stance phase, where the desired contact force is set as a small positive constant. Secondly, the joint torque optimization of the stance...

article

CHILD Syndrome: Case Report of a Chinese Patient and Literature Review of the NAD[P]H Steroid Dehydrogenase‐Like Protein Gene Mutation

Xiang‐bin Mi, Miao‐xuan Luo, Lin‐lang Guo, Tang‐de Zhang, more

Pediatric Dermatology > 32 > 6 > e277 - e282

Congenital hemidysplasia with ichthyosiform nevus and limb defects (CHILD) syndrome is an X‐linked autosomal dominant disorder characterized by unilateral congenital hemidysplasia with ichthyosiform erythroderma and ipsilateral limb defects caused by a mutation in the gene encoding NAD[P]H steroid dehydrogenase‐like protein (NSDHL) at Xq28. The histopathologic hallmark of skin lesions in CHILD syndrome...

chapter

Dynamic stability analysis of a trotting quadruped robot on unknown rough terrains

Lin Lang, Jian Wang, Hongxu Ma, Qing Wei

2015 Chinese Automation Congress (CAC) > 320 - 325

2015 Chinese Automation Congress (CAC)

This paper presents a dynamic stability analysis method for a trotting quadruped robot on unknown rough terrains based on Lyapunov theory of switching system. The dynamic model of a trotting quadruped robot is built as a nonlinear switching system. In a single stance phase, the dynamic model is approximated as a 3D seven-link mechanism and a linear inverted pendulum, and a contact force distribution/control...

chapter

Compliance control based for a quadruped robot walking over rough terrain

Jiaqi Xu, Lin Lang, Honglei An, Hongxu Ma, more

2015 Chinese Automation Congress (CAC) > 348 - 353

2015 Chinese Automation Congress (CAC)

It is well-known that the walking gait for quadruped robots has great potential to travel over rough terrain because of its higher flexibility and better environment adaptability. This paper presents a control framework for a quadruped robot walking over rough terrain, which includes such features: First, a preview controller is designed to create an appropriate body trajectory to realize the desired...

chapter

Theoretical study of a compact projector and hydrophone array

Xin-ran Xu, Lin-lang Bai, Zhen-yu Zheng

2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) > 421 - 425

2015 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

In this paper, a design of a compact projector and hydrophone array is proposed. The FEM is utilized to simulate the performance of the projector and hydrophone, and several design parameters are optimized to achieve higher and flatter sensitivity/TVR response over the working frequency band. The measured performance of the manufactured compact array verifies the validity of the design.

article

Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol

Lin Lang, Shuheng Zhao, Xiuli Yin, Wenshen Yang, more

International Journal of Hydrogen Energy > 2015 > 40 > 32 > 9924-9934

Recently, zeolite materials have attracted attention as efficient catalysts for low-temperature steam reforming of bioethanol (SRE). However, cost-effective zeolite ZSM-5 materials, one of the most popular industrial reforming catalysts, were rarely reported for SRE. In this study, low-load rhodium (Rh) catalysts are prepared using commercial high-silica zeolite ZSM-5 as the supports. The commercial...

chapter

Compliant landing control of a trotting quadruped robot on unknown rough terrains

Lin Lang, Jian Wang, Hongxu Ma, Qing Wei

2015 IEEE International Conference on Information and Automation > 1 - 6

2015 IEEE International Conference on Information and Automation (ICIA)

This paper presents a compliant landing control strategy for a trotting quadruped robot on unknown rough terrains based on contact force distribution/control algorithm. As joint actuator, the model of hydraulic cylinder is identified by using frequency response method. The compliant control strategy consists of three control loop: outer-loop is position and orientation of body control loop, in which...

article

Carboxylesterase-mediated insecticide resistance: Quantitative increase induces broader metabolic resistance than qualitative change

Feng Cui, Mei-Xia Li, Hai-Jing Chang, Yun Mao, more

Pesticide Biochemistry and Physiology > 2015 > 121 > C > 88-96

Carboxylesterases are mainly involved in the mediation of metabolic resistance of many insects to organophosphate (OP) insecticides. Carboxylesterases underwent two divergent evolutionary events: (1) quantitative mechanism characterized by the overproduction of carboxylesterase protein; and (2) qualitative mechanism caused by changes in enzymatic properties because of mutation from glycine/alanine...

chapter

The quadruped robot locomotion based on force control

Xianpeng Zhang, Lin Lang, Jian Wang, Hongxu Ma

The 27th Chinese Control and Decision Conference (2015 CCDC) > 5440 - 5445

2015 27th Chinese Control and Decision Conference (CCDC)

The quadruped robot can achieve stable locomotion with contact force control. The crucial technique of it is to convert the control of the center of mass (COM) to the control of supporting legs. In this paper, we propose a force distribution and control strategy based on model decomposition and optimal contact constrains for the quadruped robot with trotting gait. The quadruped robot can be modeled...

chapter

Contact force based compliance control for a trotting quadruped robot

Jiaqi Xu, Lin Lang, Hongxu Ma, Qing Wei

The 27th Chinese Control and Decision Conference (2015 CCDC) > 5144 - 5149

2015 27th Chinese Control and Decision Conference (CCDC)

In these paper, a compliance control strategy based on force control for quadruped trot gait locomotion over unperceived rough terrain. To avoid interference of environmental disturbance and unknown model characters, a sliding mode based controller is designed to control the position/posture of the robot torso. The force distribution and control modules calculate desired contact force by eliminating...

article

Wire–cylinder dielectric barrier discharge induced degradation of aqueous atrazine

Dan Zhu, Lin Jiang, Run-long Liu, Pei Chen, more

Chemosphere > 2014 > 117 > Complete > 506-514

The wire–cylinder dielectric barrier discharge reactor was adopted for removal of aqueous atrazine. The effect of different parameters on the degradation efficiency of atrazine was investigated, and the degradation mechanism of atrazine was studied. The experimental results showed that when the discharge power was 50W and the air flow rate was 140Lh ⁻¹ , 93.7% of atrazine was degraded after...

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INFONA - science communication portal

Search results for: Lin Lang

Analytical solution for Fredlund–Hasan unsaturated consolidation using mode superposition method

Prevalence and genotype distribution of high‐risk human papillomavirus infection among women with cervical cytological abnormalities in Chongqing, China, 2014–2020

Diabetic wound healing: The impact of diabetes on myofibroblast activity and its potential therapeutic treatments

Study of crack arrest mechanism and dynamic behaviour using arc‐bottom specimen under impacts

The effect of a pre‐existing crack on a running crack in brittle material under dynamic loads

Molecular dynamics simulations of the characteristics of Mo/Ti interfaces

Formation mechanism of 0.4-nm single-walled carbon nanotubes in AlPO4-5 crystals by low-temperature hydrocracking

Molecular dynamics simulations of the structure evolutions of Cu-Zr metallic glasses under irradiation

Importance of hydrogen for low-temperature detemplation of high-silica MFI zeolite crystals

Compliant landing of a trotting quadruped robot based on hybrid motion/force robust control

CHILD Syndrome: Case Report of a Chinese Patient and Literature Review of the NAD[P]H Steroid Dehydrogenase‐Like Protein Gene Mutation

Dynamic stability analysis of a trotting quadruped robot on unknown rough terrains

Compliance control based for a quadruped robot walking over rough terrain

Theoretical study of a compact projector and hydrophone array

Catalytic activities of K-modified zeolite ZSM-5 supported rhodium catalysts in low-temperature steam reforming of bioethanol

Compliant landing control of a trotting quadruped robot on unknown rough terrains

Carboxylesterase-mediated insecticide resistance: Quantitative increase induces broader metabolic resistance than qualitative change

The quadruped robot locomotion based on force control

Contact force based compliance control for a trotting quadruped robot

Wire–cylinder dielectric barrier discharge induced degradation of aqueous atrazine

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