• Steel and Composite Structures
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• 제37권4호
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• pp.391-404
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• 2020

Human-induced vibration could present a serious serviceability problem for large-span and/or lightweight floors using the high-strength material. This paper presents the results of heel-drop, jumping, and walking tests on a large-span composite steel rebar truss-reinforced concrete (CSBTRC) floor. The effects of human activities on the floor vibration behavior were investigated considering the parameters of peak acceleration, root-mean-square acceleration, maximum transient vibration value (MTVV), fundamental frequency, and damping ratio. The measured field test data were validated with the finite element and theoretical analysis results. A comprehensive comparison between the test results and current design codes was carried out. Based on the classical plate theory, a rational and simplified formula for determining the fundamental frequency for the CSBTRC floor is derived. Secondly, appropriate coefficients (β_rp) correlating the MTVV with peak acceleration are suggested for heel-drop, jumping, and walking excitations. Lastly, the linear oscillator model (LOM) is adopted to establish the governing equations for the human-structure interaction (HSI). The dynamic characteristics of the LOM (sprung mass, equivalent stiffness, and equivalent damping ratio) are determined by comparing the theoretical and experimental acceleration responses. The HSI effect will increase the acceleration response.

• Bulletin of the Korean Chemical Society
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• 제33권10호
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• pp.3373-3377
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• 2012

A series of polystyrene-supported 1-(propyl-3-sulfonate)-3-methyl-imidazolium hydrosulfate acidic ionic liquid (PS-$[SO_3H-PMIM][HSO_4]$) catalysts were prepared and tested for mononitration of simple aromatics compounds with nitric acid. It was found that the reactivity of the catalysts increased with increasing $[SO_3H-PMIM][HSO_4]$ content. The para-selectivity was not only related to the $[SO_3H-PMIM][HSO_4]$ content but also the substituent groups in aromatics. A reaction mechanism of nitration over this new catalyst was proposed. The catalytic activity of this catalyst decreased slightly after fifth runs in the synthesis of nitrotoluene.

• Structural Monitoring and Maintenance
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• 제5권1호
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• pp.111-127
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• 2018

Horizontal displacement of high-rise building is an essential index for assessing the structural performance and safety. In this paper, a novel inclinometer-based method is proposed to address this issue and an algorithm based on three spline interpolation principle is presented to estimate the horizontal displacement of high-rise buildings. In this method, the whole structure is divided into different elements by different measured points. The story drift angle curve of each element is modeled as a three spline curve. The horizontal displacement can be estimated after integration of the story drift angle curve. A numerical example is designed to verify the proposed method and the result shows this method can effectively estimate the horizontal displacement with high accuracy. After that, this method is applied to a practical slender structure - Shanghai Tower. Nature frequencies identification and deformation monitoring are conducted from the signal of inclinometers. It is concluded that inclinometer-based technology can not only be used for spectrum analysis and modal identification, but also for monitoring deformation of the whole structure. This inclinometer-based technology provides a novel method for future structural health monitoring.

• Asian Pacific Journal of Cancer Prevention
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• 제16권9호
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• pp.3969-3972
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• 2015

Background: This analysis was conducted to evaluate the efficacy and safety of lenalidomide based regimen in treating patients with castration-resistant prostate cancer. Materials and Methods: Clinical studies evaluating the efficacy and safety of lenalidomide based regimens on response and safety for patients with castration-resistant prostate cancer were identified using a predefined search strategy. A pooled response rate (rate of PSA level decline of ${\geq}50%$) to treatment was calculated. Results: In lenalidomide based regimen, 3 clinical studies which including 98 patients with castration-resistant prostate cancer were considered eligible for inclusion. These lenalidomide based regimens included cisplatin, doxorubicin, or GM-CSF. Pooled analysis suggested that, in all patients, the pooled PSA level decline of ${\geq}50%$ was 13.3% (13/98) in lenalidomide based regimens. Fatigue, nausea and vomitting were the main side effects. No grade III or IV renal or liver toxicity were observed. No treatment related death occurred in patients with lenalidomide based regimens. Conclusions: This evidence based analysis suggests that lenalidomide based regimens are associated with mild response rate and acceptable toxicities for treating patients with castration-resistant prostate cancer.

• Current Optics and Photonics
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• 제1권6호
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• pp.598-603
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• 2017

Traditional three-dimensional (3-D) laser imaging systems are based on real aperture imaging technology, whose resolution decreases as the range increases. In this paper, we develop a novel 3-D imaging technique based on the synthetic aperture technology in which the imaging resolution is significantly improved and does not degrade with the increase of the range. We consider an imaging laser radar (ladar) system using the floodlight transmitting mode and multi-beam receiving mode. High 3-D imaging resolutions are achieved by matched filtering the linear frequency modulated (LFM) signals respectively in range, synthetic aperture along-track, and the real aperture across-track. In this paper, a novel 3-D imaging signal model is given first. Because of the motion during the transmission of a sweep, the Doppler shift induced by the continuous motion is taken into account. And then, a proper algorithm for the 3-D imaging geometry is given. Finally, simulation results validate the effectiveness of the proposed technique.

• Earthquakes and Structures
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• 제14권3호
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• pp.261-271
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• 2018

Fiber reinforced cementitious composites (FRCC) materials that exhibit strain-hardening and multiple cracking properties under tension were recently developed as innovative building materials for construction. This study aims at exploring the use of FRCC on the seismic performance of coupling beams with conventional reinforcement. Experimental tests were conducted on seven FRCC precast coupling beams with small span-to-depth ratios and one ordinary concrete coupling beam for comparison. The crack and failure modes of the specimens under the low cycle reversed loading were observed, and the hysteretic characteristics, deformation capacity, energy dissipation capacity and stiffness degradation were also investigated. The results show that the FRCC coupling beams have good ductility and energy dissipation capacities compared with the ordinary concrete coupling beam. As the confinement stirrups and span-to-depth ratio increase, the deformation capacity and energy dissipation capacity of coupling beams can be improved significantly. Finally, based on the experimental analysis and shear mechanism, a formula for the shear capacity of the coupling beams with small span-to-depth ratios was also presented, and the calculated results agreed well with the experimental results.

• Asian Pacific Journal of Cancer Prevention
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• 제13권10호
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• pp.5219-5223
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• 2012

Osteopontin (OPN) is an integrin-binding protein, believed to be involved in a variety of physiological cellular functions. The physiology of OPN is best documented in the bone where this secreted adhesive glycoprotein appears to be involved in osteoblast differentiation and bone formation. In our study, we used semi-quantitative RT-PCR of osteopontin in calcification tissue of breast to detect breast cancer metastasis. The obtained data indicate that the expression of osteopontin is related to calcification tissue of breast, and possibly with the incidence of breast cancer. The expression strength of OPN by RT-PCR detection was related to the degree of malignancy of breast lesions, suggesting a close relationship between OPN and breast calcification tissue. The results revealed that expression of OPN mRNA is related to calcification of breast cancer tissue and to the development of breast cancer. Determination of OPN mRNA expression can be expected to be a guide to clinical therapy and prediction of the prognosis of breast cancer patients.

• Asian Pacific Journal of Cancer Prevention
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• 제13권5호
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• pp.1949-1952
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• 2012

Objective: The aim of this meta-analysis is to evaluate associations between LTA-252 A>G and breast cancer (BC). Methods: Electronic searches of several databases were conducted for all online publications. A total of 7 studies involving 4,625 BC patients and 4,373 controls were identified. Results: This meta-analysis showed no significant association between the LTA-252 A>G polymorphism and BC in overall or Caucasian populations. However, a positive association was found limited to Asian populations. Conclusion: Although there was no significant association found between the LTA-252 A>G polymorphism and BC overall, a positive association was found in Asian populations.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권12호
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• pp.2326-2339
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• 2011

To reduce the implementation complexity of the Vertical Bell Labs layered space-time (V-BLAST) systems with respect to the zero-forcing (ZF) criterion, a computationally efficient recursive algorithm is proposed. A fast implementation of the proposed algorithm is developed and its complexity is analyzed in detail. The proposed algorithm matches the ZF-OSIC detection well, and its three significant advantages can be demonstrated by analyses and simulations. Firstly, its speedups over the conventional ZF-OSIC with norm-based ordering, the original fast recursive algorithm (FRA) and the fastest known algorithm (FKA) in the number of flops are 1.58, 2.33 and 1.22, respectively. Secondly, a much simpler implementation than FRA and FKA can be expected. Finally, the storage requirements are lower than those of FRA and FKA. These advantages make the proposed algorithm more efficient and practical.

• 동아시아식생활학회지
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• 제7권2호
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• pp.247-255
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• 1997

The changes of mental activities and the normal life during the pregnancy have a direct and indirect influences not only on the maternal health but also on the physiological function of the fetus. In the oriental medicine, many attentions have been ordered during the pregnancy. And they called these attentions and managements during the pregnancy as 'Tia-jiao(胎敎)'. The Tia-jiao, that is the prenatal culture, means 'educations for the fetus', so it is a hygienic conception for the pregnacy and the delivery. About this, many oriental gynecologic texts contained various contents such as the prohibitions against food(Shi-ji 食忌), the attentions on the mental activities(Yang-xing-ging 養性情), the notions on the normal life(Qi-ju-ji 起居忌), the cautions against drugs(Yao-ji 藥忌), the instructions for the treatments, the preventions against abortion(Gu-tia-liang-fa 固胎良法). The Tai-jiao can be divided two categories. The one is the behaviors and mental attitudes which can induce the good characters, and the other is the intake of foods and drugs which can grow the healthy body. According to the transitions of the generation, the economies, the societies, and the cultures have been changed. Through the pursuits of the intelligent babies have been remained, all conceptions and recognitions have also been altered. Therefore the ways to the prenatal culture must be changed, The reviewing the old and learning now, and doing the appropriate Tia-jiao in the modern times may be the best way to get the good babies.