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238 results on '"Ma, Huiping"'

66. Researches on binocular vision pose measurement with selected feature points

Author

Dong Ye, Ma Huiping, Gang Chen, and Yubo Guo

Subjects
Computer science, business.industry, 02 engineering and technology, 3D pose estimation, Object (computer science), 01 natural sciences, Atomic and Molecular Physics, and Optics, Articulated body pose estimation, Electronic, Optical and Magnetic Materials, 010309 optics, Feature (computer vision), 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Computer vision, Artificial intelligence, Electrical and Electronic Engineering, business, Binocular vision, Pose
Abstract

Generally, the binocular vision system for pose measurement can identify much more than 3 feature points each time. However, the pose of an object can be measured with 3 feature points. Different combinations of feature points may make different effect on the measurement accuracy of the object pose. This article presents a method to optimize the selection of feature points in real time and consequently ensure optimized accuracy of pose measurement based on binocular vision. At first, the object poses measurement model based on binocular vision is established. Then, pose measurement error model is deduced, and the objective function is presented for optimizing the selection of feature points based on error transferring matrix. At last, simulations are conducted and the results verified the correctness of pose measurement error model and the effectiveness of the selected feature points.

Published
2016
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71. Development of Anti-CD74 Antibody–Drug Conjugates to Target Glucocorticoids to Immune Cells

Author

Brandish, Philip E., primary, Palmieri, Anthony, additional, Antonenko, Svetlana, additional, Beaumont, Maribel, additional, Benso, Lia, additional, Cancilla, Mark, additional, Cheng, Mangeng, additional, Fayadat-Dilman, Laurence, additional, Feng, Guo, additional, Figueroa, Isabel, additional, Firdos, Juhi, additional, Garbaccio, Robert, additional, Garvin-Queen, Laura, additional, Gately, Dennis, additional, Geda, Prasanthi, additional, Haines, Christopher, additional, Hseih, SuChun, additional, Hodges, Douglas, additional, Kern, Jeffrey, additional, Knudsen, Nickolas, additional, Kwasnjuk, Kristen, additional, Liang, Linda, additional, Ma, Huiping, additional, Manibusan, Anthony, additional, Miller, Paul L., additional, Moy, Lily Y., additional, Qu, Yujie, additional, Shah, Sanjiv, additional, Shin, John S., additional, Stivers, Peter, additional, Sun, Ying, additional, Tomazela, Daniela, additional, Woo, Hyun Chong, additional, Zaller, Dennis, additional, Zhang, Shuli, additional, Zhang, Yiwei, additional, and Zielstorff, Mark, additional

Published
2018
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79. Microstructure and tensile properties of a Ti3AlNbMoV alloy

Author

Ma Huiping, Zhong Zengyong, Jia Tiancong, Wang Bin, and Zou Dunxu

Subjects
Materials science, Mechanical Engineering, Metallurgy, Alloy, engineering.material, Condensed Matter Physics, Microstructure, Brittleness, Mechanics of Materials, Ultimate tensile strength, Volume fraction, engineering, Thermomechanical processing, General Materials Science, Elongation, Ductility
Abstract

The effect of thermomechanical processing (TMP) on the microstructure and tensile properties of a Ti3AlNbMoV alloy has been studied. The results show that the alloy had good comprehensive properties after TMP. Higher room temperature (RT) ductility with an elongation of 9% could be obtained, making normally brittle Ti3Al become an applicable material. The RT ductility of Ti3Al-base alloy could be improved by controlling the volume fraction of primary α2. The maximum ductility could be achieved when the primary α2 volume fraction was about 30%. The reasons are due to finer grains, the decrease of strain incompatibility between α2 and β0, and an optimum combination with λ and d .

Published
1992
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80. A study on long-term stability of Ti3AlNbVMo alloy

Author

Wang Bin, Zou Dunxu, Jia Tiancong, Zhong Zengyong, and Ma Huiping

Subjects
Materials science, Precipitation (chemistry), Mechanical Engineering, Metallurgy, Alloy, engineering.material, Condensed Matter Physics, Microstructure, Stability (probability), Mechanics of Materials, Phase (matter), engineering, General Materials Science, Ductility
Abstract

Thermomechanically processed Ti24Al14Nb3V0.5Mo (atomic pressure) alloy was studied. It has been shown that, during long-term exposure below 750°C, the microstructure and the property of the alloy have higher stability. When exposed at 850°C, the microstructure is coarsened and, thus, the properties are changed. Additional precipitation of the O phase in fine and dispersive forms is beneficial to increase the ductility and the strength of the alloy.

Published
1992
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90. A study on long-term stability of Ti3Al–Nb–V–Mo alloy

Author

Wang Bin, Zou Dunxu, Jia Tiancong, Zhong Zengyong, and Ma Huiping

Subjects
Materials science, Precipitation (chemistry), Phase (matter), Metallurgy, Alloy, engineering, engineering.material, Microstructure, Ductility
Abstract

Thermomechanically processed Ti–24Al–14Nb–3V–0.5Mo (atomic percentage) alloy was studied. It has been shown that, during long-term exposure below 750 °C, the microstructure and the property of the alloy have higher stability. When exposed at 850 °C, the microstructure is coarsened and, thus, the properties are changed. Additional precipitation of the O phase in fine and dispersive forms is beneficial to increase the ductility and the strength of the alloy.

Published
1992
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91. Microstructure and tensile properties of a Ti3Al–Nb–Mo–V alloy

Author

Zou Dunxu, Zhong Zengyong, Ma Huiping, Jia Tiancong, and Wang Bin

Subjects
Brittleness, Materials science, Alloy, Metallurgy, Volume fraction, Ultimate tensile strength, engineering, Thermomechanical processing, engineering.material, Elongation, Microstructure, Ductility
Abstract

The effect of thermomechanical processing (TMP) on the microstructure and tensile properties of a Ti 3 Al–Nb–Mo–V alloy has been studied. The results show that the alloy had good comprehensive properties after TMP. Higher room temperature (RT) ductility with an elongation of 9% could be obtained, making normally brittle Ti 3 Al become an applicable material. The RT ductility of Ti 3 Al-base alloy could be improved by controlling the volume fraction of primary α 2 . The maximum ductility could be achieved when the primary α 2 volume fraction was about 30%. The reasons are due to finer grains, the decrease of strain incompatibility between α 2 and β 0 , and an optimum combination with λ ¯ and d ¯ .

Published
1992
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97. Oral medication of icariin enhances peak bone mineral density and bone quality in rats.

Author

CHENG Kui, GE Baofeng, CHEN Keming, Zhen Ping, ZHOU Jian, MA Xiaoni, SONG Peng, and MA Huiping

Subjects
BONE density, LABORATORY rats, ORAL drug administration, BONES, BIOMECHANICS research
Abstract

Objective To investigate the effect of the oral medication of icariin (ICA) on bone mineral density (BMD) and bone quality in rats. Methods Twenty-four 1-month-old female SD rats were randomly divided into 2 groups, and each group had 12 rats. Rats in the medication group were given an oral administration of 25mg/kg icariin, while rats in control group (CON) were given an administration of same volume of distilled water. The body weight of all the rats was monitored weekly. And BMD of all the rats was measured monthly. All the rats were sacrificed after 3-month treatment. Blood was collected and the serum levels of osteocalcin (OC) and anti4artaric acid phosphatase 5b (TRACP 5b) were measured. The bilateral femurs and the tibia were also collected and BMD detection, µCT scanning, and biomechanical evaluation were performed. The heart, the liver, the stomach, the kidney, the adrenal, and the uterus were all collected and weighted. The organ index was calculated and the routine pathological detection was performed. Results No significant difference of the body weight of the rats in both groups was observed during 3 months (P > 0.05). The organ index of all the organs showed no significant difference, and the pathological observation also showed no abnormal changes. BMD of the total bone in both groups at the 1st and the 2nd month showed no significant difference (P > 0.05), but 3 months later, BMD in ICA group was significantly higher than that in CON group, and the same trend was also observed in the BMD of the femur (P < 0. 05). The serum level of OC in ICA group increased while the level of TRACP 5 b decreased (P < 0.05). The result of µCT scanning revealed that the bone volume/tissue volume, the trabecular thickness, and the trabecular number in ICA group were all higher than that in CON group, but the trabecular separation and the coefficient of the model were significant lower than that in CON group (P < 0.05). The maximum load, the elasticity modulus, and structural model index (SMI) of the femur in ICA group were significantly higher than that in CON group (P < 0.05). Conclusion Oral medication of icariin can promote bone formation by inhibiting bone resorption, improve peak BMD and bone quality, which has significant importance for the prevention of osteoporosis and osteoporotic fractures caused by different reasons. [ABSTRACT FROM AUTHOR]

Published
2014
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