The effect of nozzle design on the pulse cleaning of ceramic filter

( Yu Liang ),김진형,김영애,사공경민,( Huachang Chi ),최주홍 한국공업화학회 2007 한국공업화학회 연구논문 초록집 Vol.2007 No.-

Prevalence, Risk Factors, and Psychological Effects of Overactive Bladder in Chinese University Students

Yu Liang,Guo Wei Si,Hui Jie Hu,Zhen Wei Zhang,Cui Ping Song,Qi Feng Dou,Jian Guo Wen 대한배뇨장애요실금학회 2022 International Neurourology Journal Vol.26 No.4

Purpose: The purpose of this study was to investigate the prevalence and risk factors of overactive bladder (OAB) in young adults and to explore the influence of OAB on mental health. Methods: Between October 2019 and January 2020, 14,010 anonymous questionnaires were distributed to freshmen at 2 universities in Henan, China. The students came from all over the country. The questionnaire included general items and information necessary to calculate the overactive bladder symptom score, the Chinese version of the Pittsburgh Sleep Quality Index (PSQI) score, Self-Esteem Scale (SES) score, and Self-Rating Depression Scale (SDS) score. The relationships between the prevalence of OAB and its risk factors were evaluated. Results: The overall prevalence of OAB was 6.0%, with 4.3% of participants characterized as having dry OAB and 1.7% as having wet OAB. The prevalence of mild OAB was 5.5%, and that of moderate OAB was 0.5%; no severe OAB was observed. Higher prevalence rates of OAB were found among women, respondents with constipation, and respondents with primary nocturnal enuresis (PNE) (P <0.05). Compared to healthy controls, the OAB group exhibited a higher mean SDS score (52.12±8.986 vs. 47.71±9.399, P<0.001) and mean PSQI score (5.28±2.486 vs. 4.27±2.431, P<0.001), but a lower mean SES score (27.78±3.599 vs. 29.57±4.109, P<0.001). Conclusions: OAB significantly affects the mental health of young adults. Female sex, constipation, and PNE are risk factors for OAB.

The Impact of Excess Pore Pressure on the Support Stability of a Shield When Tunnelling in Sand Stratum

Yu Liang,Jian Zhang,Xiangyu Chen 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.8

When the large-diameter shield tunneling through the soft soil stratum, the pore pressure fluctuation would influence the tunnel stability, yet how it affected was still hard to figure out. Based on field tests data collected from a tunnel project in China, the distribution characteristics of excess pore pressure in sand stratum were obtained. By combining the limit equilibrium theory and variational calculus method, a modified formula of the limit support pressure was proposed, considering the effects of excess pore pressure and slope angle. The results showed that the excess pore water pressure had a big influence on the fracture angel of the sliding surface and the support pressure of the shield. If the effect of the pore pressure were taken into account, the support pressure should be set larger than the normal condition when the shield entered sand layer. The limit support pressure would decrease with the increase of the cohesive force and friction angle. Thus, effective reinforcement on the stratum should be adopted before the shield passing through.

The Effect of Physical Activity on Glucose Metabolism in the Prediabetic People

ZHA Yuliang,Hui Guo,Lei Wang,Yuliang Zha 한국웰니스학회 2018 한국웰니스학회지 Vol.13 No.1

At present, the prediabetic population was gradually increasing, Individuals with prediabetes are at high risk with up to 70% eventually progressing to type 2 diabetes mellitus(T2DM) over their lifetimes. Due to insufficient treatment strategies of T2DM currently, it was particularly important to take preventative methods for them. The lifestyle intervention (exercise and diet) was an important therapy in the prevention, care and management of prediabetes. Based on the literature review of the relationship between exercise (aerobic exercise of moderate intensity and resistance training) intervention and glucose homeostasis index and incidence rate of T2DM in prediabetic individuals, this article tried to summarize the effective exercise intensity, mode and volume for the improvement of prediabetic people, which will contribute to provide practical and effective exercise guidance and recommendations for them. Forty-four papers were searched out in websites like Pubmed and Highwire after typing the key words of “Prediabetes”, “Prediabetic Individuals”, “Exercise”, “Training”, “Glucose Homeostasis”, “Resistance Training” and “Physical Activity”. Through the literature review, it is found that aerobic exercise and resistance training can significantly improve the glucose metabolism and reduce the risk of T2DM in the prediabetic individuals. Moderate intensity physical activity (11.7-18.2km/week, total 6 months) is significantly superior to the energy-equivalent amount of vigorous-intensity exercise for improvements in glucose tolerance and reducing the risk of developing type 2 diabetes. The research results about the effect of 12 weeks resistance training on glucose homeostasis in prediabetes are inconsistent, In order to improve the glucose metabolism and reduce the risk of developing T2DM, at least 16 weeks of resistance training is recommended.. Additionally, this review would provide the theoretical basis for the establishment of the 73 Balanced Health Methods.

A Comparison of Friction Force Calibration in Lateral Force Microscope

Yuliang Wang,Hong Joon Kim,Hosung Kong,Eui-Sung Yoon,Xu-Zheng Zhao 한국트라이볼로지학회 2006 KSTLE International Journal Vol.7 No.1

The main principle of two widely used methods which were proposed by Ruan and Bhushan, and by Ogletree and Carpick are introduced. Experiments were conducted using the two methods to measure friction force between AFM probe and silicon sample quantitatively. To characterize the frictional properties, the conversion factors of the two methods by which lateral electronic signal is converted into actual friction force were calculated. The experimental results show that that the conversion factors were extraordinarily different from each other. Further research should be done to identify the reasons for these differences.

125 I Brachytherapy Seeds Implantation for Inoperable Low-Grade Leiomyosarcoma of Inferior Vena Cava

Yuliang Li,Yongzheng Wang,Bin Liu,Zheng Li,Wujie Wang 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.2

A 60-year-old female presented with abdominal pain and tenderness of five-day duration. Contrast enhanced CT showed a mass of 9 × 6 × 5.5 cm in size with almost complete obliteration of the inferior vena cava and massive extension to the extravascular space. CT-guided biopsy demonstrated a low-grade leiomyosarcoma. The patient underwent 125Iodine seeds implantation in two sessions, and another balloon cavoplasty. Abdominal pain and tenderness gradually improved and the patient continues to remain as disease free state for three years after the procedures.

Investigation of Stereo-dynamic Properties for the Reaction H+HLi by Quasi-classical Trajectory Approach

Yuliang Wang,Jinchun Zhang,Yanlan Jiang,Kun Wang,Mingyu Zhou,Xiaorui Liang 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.9

Quasi-classical trajectory (QCT) calculations of H+HLi reaction have been carried out on a new potential energy surface of the ground state reported by Prudente et al. [Chem. Phys. Lett. 2009, 474, 18]. The four polarization-dependent differential cross sections have been carried out in the center of mass (CM) frame at various collision energies. The reaction probability for the depletion channel has been studied over a wide collision energy range. It has been found that the collision energy decreases remarkably reaction probability, which shows the expected behavior of the title reaction belonging to an exothermic barrierless reaction. The results are in good agreement with previous RMP results. The P(θr), P(φr) and P(θr, φr) distributions, the k−k'− j' correlation and the angular distribution of product rotational vectors are presented in the form of polar plots. The average rotational alignment factor as a function of collision energy is also calculated. The results indicate that the collision energy has a great influence on the polarization of the product rotational angular momentum vector j'.

MPPT Adaptive Controller of DC-based DFIG in Resistances Uncertainty

Yuliang Sun,Shaomin Yan,Bin Cai,Yuqiang Wu,Zhongcai Zhang 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.8

A coordinated adaptive feedback linearization controller (FLC-A) based on a flux observer for DC-based DFIG to track the maximum power point (MPP) is introduced in this paper. The stator and rotor of DFIG are connected to DC grid directly by two voltage source converters. First, an adaptive controller is used to track the MPP on the system which is decoupled by a single-loop feedback linearization strategy. Meanwhile, the proposed controller can estimate and compensate the changes of stator and rotor resistances caused by physical environment in realtime, and improve the dynamic performance of the system; second, under the persistent excitation condition (PED), a stator flux observer with online resistance estimation in the stationary reference frame is adopted to replace the traditional flux calculation method or flux meter, which increases system reliability. The stability of adaptive control rate and nonlinear observer is proved by Lyapunov theory. Simulations are carried out to prove the effectiveness and robustness of the proposed control strategy.

Expression Vectors for Human-mouse Chimeric Antibodies

Yuliang Ran,Xiangmin Yang,Zhinan Chen,Hua Xiong,Jinliang Xing,Yu Li 한국생화학분자생물학회 2005 BMB Reports Vol.38 No.4

Static and fatigue behavior of through-bolt shear connectors with prefabricated HFRC slabs

Yuliang He,Jie Zhuang,Lipu Hu,Fuyou Li,Ying Yang,Yi-qiang Xiang 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.83 No.1

Twelve push-out test specimens were conducted with various parameters to study the static and fatigue performance of a new through-bolt shear connector transferring the shear forces of interface between prefabricated hybrid fiber reinforced concrete (HFRC) slabs and steel girders. It was found that the fibers could improve the fatigue life, capacity and initial stiffness of through-bolt shear connector. While the bolt-hole clearance reduced, the initial stiffness, capacity and slippage of through-bolt shear connector increased. After the steel-concrete interface properties were improved, the initial stiffness increased, and the capacity and slippage reduced. Base on the test results, the equation of the load-slip curve and capacity of through-bolt shear connector with prefabricated HFRC slab were obtained by the regression of test results, and the allowable range of shear force under fatigue load was recommended, which could provide the reference in the design of through-bolt shear connector with prefabricated HFRC slabs.