이론적 차이, 학술적 대립, 학과의 위기

喬福錦(Qiao Fu jin),최진의(Choi Jin ui)(崔辰義) 한국홍루몽연구회 2015 홍루아리랑 Vol.- No.1

Nested Case-control Study of Occupational Radiation Exposure and Breast and Esophagus Cancer Risk among Medical Diagnostic X Ray Workers in Jiangsu of China

Wang, Fu-Ru,Fang, Qiao-Qiao,Tang, Wei-Ming,Xu, Xiao-San,Mahapatra, Tanmay,Mahapatra, Sanchita,Liu, Yu-Fei,Yu, Ning-Le,Sun, Quan-Fu Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.11

Medical diagnostic X-ray workers are one occupational group that expose to the long-term low-dose external radiation over their working lifetime, and they may under risk of different cancers. This study aims to determine the relationship between the occupational X-ray radiation exposure and cancer risk among these workers in Jiangsu, China. We conducted Nested case-control study to investigate the occupational X-ray radiation exposure and cancer risk. Data were collected through self-administered questionnaire, which includes but not limits to demographic data, personal behaviors and family history of cancer. Retrospective dose reconstruction was conducted to estimate the cumulative doses of the x-ray workers. Inferential statistics, t-test and 2 tests were used to compare the differences between each group. We used the logistic regression model to calculate the odds ratio (OR) and 95% confidence interval (CI) of cancer by adjusting the age, gender. All 34 breast cancer cases and 45 esophageal cancer cases that detected in a cohort conducted among health workers between 1950~2011 were included in this presented study, and 158 cancer-free controls were selected by frequency-matched (1:2). Our study found that the occupational radiation exposure was associated with a significantly increased cancer risk compared with the control, especially in breast cancer and esophageal cancer (adjusted OR=2.90, 95% CI: 1.19-7.04 for breast cancer; OR=4.19, 95% CI: 1.87-9.38 for esophageal cancer, and OR=3.43, 95% CI: 1.92-6.12 for total cancer, respectively). The occupational X-ray radiation exposure was associated with increasing cancer risk, which indicates that proper intervention and prevention strategies may be needed in order to bring down the occupational cancer risk.

No Battery, No Problem: Challenges and Opportunities in Batteryless Intermittent Networks

Fu, Shen,Narayanan, Vishak,Wymore, Mat,Deep, Vishal,Duwe, Henry,Qiao, Daji 한국통신학회 2023 Journal of communications and networks Vol.25 No.6

The emergence of the Internet of Things (IoT) brings a new paradigm of ubiquitous sensing and computing. Yet as an increasing number of wireless IoT devices are deployed, powering them with batteries becomes expensive and unsustainable. Batteryless systems harvesting energy from the ambient environment offer a promising solution to this problem. However, due to the unpredictability of the ambient energy sources and the relatively weak harvesting strength, these systems may operate intermittently, presenting a series of unique challenges above and beyond the challenges of traditional duty-cycled networks. In this article, we present and discuss the challenges and opportunities in batteryless intermittent networks. We make the case for, and propose, the first formal intermittency-aware network stack. Finally, we present future research directions for batteryless intermittent networks, with the expectation that research of this type can pave the way for batteryless intermittent networks as the next generation of ubiquitous IoT devices.

BERGMAN SPACES, BLOCH SPACES AND INTEGRAL MEANS OF p-HARMONIC FUNCTIONS

Fu, Xi,Qiao, Jinjing Korean Mathematical Society 2021 대한수학회보 Vol.58 No.2

In this paper, we investigate the properties of Bergman spaces, Bloch spaces and integral means of p-harmonic functions on the unit ball in ℝn. Firstly, we offer some Lipschitz-type and double integral characterizations for Bergman space ��kγ. Secondly, we characterize Bloch space ��αω in terms of weighted Lipschitz conditions and BMO functions. Finally, a Hardy-Littlewood type theorem for integral means of p-harmonic functions is established.

The P275A Polymorphism in the Macrophage Scavenger Receptor 1 Gene and Prostate Cancer Risk: a Meta-Analysis

Zhou, Qiao-Xia,Tang, Jian-Qiu,Zhao, Fen,Wei, Fu-Lin,Huang, Ying Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.13

Background: Published data regarding associations between the P275A polymorphism in the macrophage scavenger receptor 1 (MSR1) gene and prostate cancer (PCa) risk are inconclusive. The aim of this study was to comprehensively evaluate the genetic risk of P275A polymorphism in MSR1 gene for PCa. Materials and Methods: A systematic literature search was carried out in Pubmed, Medline (Ovid), Embase, CBM, CNKI, Weipu, and Wanfang databases, covering all available publications (last search was performed on Apr 27, 2015). Statistical analysis was performed using Revman 5.2 and STATA 10.1 software. Results: A total of 5,017 cases and 4,869 controls in 12 case-control studies were included in this meta-analysis. When all groups were pooled, there was no evidence that the P275A polymorphism had a significant association with PCa under dominant (OR=0.93, 95%CI=0.81-1.06, and p=0.28), co-dominant (homogeneous OR=0.97, 95%CI=0.56-1.68, and p=0.92; heterogeneous OR=0.93, 95%CI=0.74-1.15, and p=0.49), recessive (OR=1.10, 95%CI=0.65-1.87, and p=0.73), over-dominant (OR=0.93, 95%CI=0.75-1.15, and p=0.50), and allelic (OR=0.95, 95%CI=0.77-1.16, and p=0.61) genetic models. For stratified analyses by ethnicity and study design, no significant associations were found in the white race, the yellow race, the black race and mixed ethnicity, and the population-based case-control (PCC) and hospital-based case-control (HCC) studies under all genetic models. Conclusions: Based on our meta-analysis, the P275A polymorphism in the MSR1 gene is unlikely to be a risk factor for PCa.

Application of a novel cationic starch in enhanced oil recovery and its adsorption properties

Ru Qiao,Weiqun Zhu,Jianong Fu,Lanlan Zhu,Shiyou Hao 한국화학공학회 2013 Korean Journal of Chemical Engineering Vol.30 No.1

We report a preparation of water-soluble cationic starch and its application as an oil-displacing agent in chemical enhanced oil recovery. The singular sand-pack core-flood tests provide experimental evidence that the injection of the modified starch after the conventional water flooding can significantly enhance oil recovery and effectively reduce water-cut. To discuss the proposed oil-displacement mechanism of this cationic starch solution, its static and dynamic adsorption properties were also presented in this paper.

Bovine Viral Diarrhea Virus Infection Induces Autophagy in MDBK Cells

Qiang Fu,Huijun Shi,Yan Ren,Fei Guo,Wei Ni,Jun Qiao,Pengyan Wang,Hui Zhang,Chuangfu Chen 한국미생물학회 2014 The journal of microbiology Vol.52 No.7

Bovine viral diarrhea virus (BVDV) is an enveloped, positive-sense, single-stranded RNA virus that belongs to the genus Pestivirus (Flaviviridae). The signaling pathways and levels of signaling molecules are altered in Madin-Darby Bovine Kidney (MDBK) cells infected with BVDV. Autophagy is a conservative biological degradation pathway that mainly eliminates and degrades damaged or superfluous organelles and macromolecular complexes for intracellular recycling in eukaryotic cells. Autophagy can also be induced as an effective response to maintain cellular homeostasis in response to different stresses, such as nutrient or growth factor deprivation, hypoxia, reactive oxygen species exposure and pathogen infection. However, the effects of BVDV infection on autophagy inMDBK cells remain unclear. Therefore, we performed an analysis of autophagic activity after BVDV NADL infection using real-time PCR, electron microscopy, laser confocal microscopy, and Western blotting analysis. The results demonstrated that BVDV NADL infection increased autophagic activity and significantly elevated the expression levels of the autophagy-related genes Beclin1 and ATG14 inMDBK cells. However, the knockdown of Beclin1 and ATG14 by RNA interference (RNAi) did not affect BVDV NADL infection-related autophagic activity. These findings provided a novel perspective to elaborate the effects of viral infection on the host cells.

Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors

Yong Fu,Hongxia Qiao,Chenggong Lu,Theogene Hakuzweyezu,Fei Guo 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.1

Aiming at the problem that the reliability analysis of the outdoor exposed concrete structure under the action of a single factor is not consistent with the actual service environment, a reliability analysis based on the Copula function describing multiple degradation factors is proposed. According to the actual data collected on-site, the relative quality evaluation parameters (RQEP) and relative dynamic elastic modulus evaluation parameters (RDEMEP) was selected as the key degradation indicators, and the Aperture Information Criterion (AIC) was used to determine the optimal marginal distribution function in different degradation trajectories, and obtain the most optimal edge distribution function under a single factor. Optimize the edge distributions reliability curve, establish the relationship between the edge distributions through the Copula function, and couple the edge distributions of the remaining life of the concrete to obtain the joint reliability function of the concrete under the action of the coupling factors. The results show that the selection of two degradation indicators, RQEP and RDEMEP, is helpful in establishing the concrete life prediction model in the field exposure environment, and the RDEMEP are more sensitive to the field exposure environment than the RQEP. The Gumbel Copula distribution function can reasonably predict the reliability of exposed concrete on-site under dual coupling factors. The service life of C40 and C50 exposed concrete on site is about 400 and 550 months, respectively.

Effect of Laser Power on Hybrid Laser-Gas Metal Arc Welding (GMAW) of a 6061 Aluminum Alloy

Zhou Huiling,Fu Fanglian,Dai Zhixin,Qiao Yanxin,Chen Jian,Yang Lanlan,Liu Wen 한국물리학회 2020 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.77 No.11

The effect of laser power on the geometrical characteristics, microstructure and micro-hardness of the welding joints for 6061 aluminum alloy after hybrid laser-gas metal arc welding (GMAW) was investigated. The results showed that the welding joints from "Bottom" to "Top" were mainly composed of planar crystals, columnar crystals, and equiaxed dendrites. With increasing laser power, the weld depth and width and the grain size increased. When the laser power reached 5 kW, pores could be found in the weld pool region. Micro-hardness measurements showed that the application of higher laser power hardly changed the hardness of the welding joint.

No Blind Spot: Network Coverage Enhancement Through Joint Cooperation and Frequency Reuse

Zhong, Yi,Qiao, Pengcheng,Zhang, Wenyi,Zheng, Fu-chun The Korea Institute of Information and Commucation 2016 Journal of communications and networks Vol.18 No.5

Both coordinated multi-point transmission and frequency reuse are effective approaches to mitigate inter-cell interference and improve network coverage. The motivation of this work is to explore the manner to effectively utilize the spectrum resource by reasonably combining cooperation and frequency reuse. The $Mat{\acute{e}}rn$ cluster process, which is appropriate to model networks with hot spots, is used to model the spatial distribution of base stations. Two cooperative mechanisms, coherent and non-coherent joint transmission (JT), are analyzed and compared. We also evaluate the effect of multiple antennas and imperfect channel state information. The simulation reveals that the proposed approach to combine cooperation and frequency reuse is effective to improve the network coverage for users located at both the center and the boundary of the cooperative region.