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121.
122.
VJ Paul Y Seo KW Cho JR Rho J Shin PR Bergquist 《Canadian Metallurgical Quarterly》1997,60(11):1115-1120
Ten sesquiterpenoids, including seven new ones, have been isolated from an undescribed sponge of the genus Dysidea. Compounds 1-8 are sesquiterpenoids of the drimane class, while 9 and 10 are 12-norsesquiterpenoids of the same structural class. The structures of novel compounds have been determined by combined spectroscopic methods. These compounds exhibited moderate antimicrobial and enzyme inhibitory (Na+/K(+)-ATPase and PLA2) activities. 相似文献
123.
This paper presents a 2D to 3D conversion scheme to generate a 3D human model using a single depth image with several color
images. In building a complete 3D model, no prior knowledge such as a pre-computed scene structure and photometric and geometric
calibrations is required since the depth camera can directly acquire the calibrated geometric and color information in real
time. The proposed method deals with a self-occlusion problem which often occurs in images captured by a monocular camera.
When an image is obtained from a fixed view, it may not have data for a certain part of an object due to occlusion. The proposed
method consists of following steps to resolve this problem. First, the noise in a depth image is reduced by using a series
of image processing techniques. Second, a 3D mesh surface is constructed using the proposed depth image-based modeling method.
Third, the occlusion problem is resolved by removing the unwanted triangles in the occlusion region and filling the corresponding
hole. Finally, textures are extracted and mapped to the 3D surface of the model to provide photo-realistic appearance. Comparison
results with the related work demonstrate the efficiency of our method in terms of visual quality and computation time. It
can be utilized in creating 3D human models in many 3D applications. 相似文献
124.
Jeong Won Kim Hee Won Kang Dong-Hwan Hwang Sang Jeong Lee 《International Journal of Control, Automation and Systems》2012,10(3):529-535
A signal tracking method of GNSS receivers for spinning vehicles is proposed in order to eliminate the influence of spinning to the GNSS signal of a vehicle. In the proposed method, a rotation tracking loop is added into the carrier tracking loop of a conventional GNSS receiver. The proposed method was verified through computer simulations and an experiment for live GPS signals. The results show that the proposed method gives an accurate tracking performance. 相似文献
125.
Sung Kyung Hong Sang Cheol Leev Jae Won Han Young-sun Ryuh 《International Journal of Control, Automation and Systems》2012,10(5):1000-1004
To achieve the goal of low-cost MEMS gyros for the precise self-localization of mobile robots, this paper presents a simple, yet effective method to minimize drifts on the heading angle by combining measurements from a gyro with measurements from wheel encoders (odometry). The main idea of the proposed approach is to estimate the accuracy of both sensors as a function of the actual maneuver being carried out, and then the output of both sensors are fused by the complementary filter taking into account the maneuvering conditions. The proposed method is applied to a mobile robot and the experimental data demonstrate the effectiveness of this approach. 相似文献
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129.
Min?-Ho?LeeEmail author Dong?-Joo?Yoon Dae?-Hee?Won Tae?-Sung?Bae Fumio?Watari 《Metals and Materials International》2003,9(1):35-42
In the present study, commercial pure Ti and Ti-6Al-4V alloy specimens with and without alkali and heat treatments were implanted
in the abdominal connective tissue of mice. Conventional stainless steel 316L was also implanted for comparison. After three
months, their biocompatibility was evaluated byin vitro andin vivo experiments. Surface structural changes of specimens due to the alkali treatment and soaking in Hank’s solution were analyzed
by XRD, SEM, XPS and AES. An apatite layer, which accelerates the connection with bone, was formed more easily on the alkali
treated specimens than the non-treated specimens. The number of macrophages, which is known to increase as the inflammatory
reaction proceeds, was much lower for the alkali and heat treated specimens than for the others. The average thickness of
the fibrous capsule formed around the implant was much thinner for the alkali and heat treated specimens than for the others. 相似文献
130.
Youri Oh Hoyong Jung Hyejin Kim Jihyun Baek Joonhong Jun Hyunwook Cho Daseul Im Jung-Mi Hah 《International journal of molecular sciences》2021,22(8)
Polo-like kinase 1 (PLK1) plays an important role in cell cycle progression and proliferation in cancer cells. PLK1 also contributes to anticancer drug resistance and is a valuable target in anticancer therapeutics. To identify additional effective PLK1 inhibitors, we performed QSAR studies of two series of known PLK1 inhibitors and proposed a new structure based on a hybridized 3D-QSAR model. Given the hybridized 3D-QSAR models, we designed and synthesized 4-benzyloxy-1-(2-arylaminopyridin-4-yl)-1H-pyrazole-3-carboxamides, and we inspected its inhibitory activities to identify novel PLK1 inhibitors with decent potency and selectivity. 相似文献