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Yun-yun Chen,Fen-ping Cui,Fang Gu,Ying-ying Zhang 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.11
In this paper, the feasibility of using a one-temperature model to determine plasma’s temperatureby measuring its refractive index is studied based on the consideration that many plasma flow fieldsare not in local thermodynamic equilibrium (LTE). We compare the refractive indices between theone- and the two-temperature models of an arc plasma, in order to discuss the applicability ofthe one-temperature model in optical diagnosis. We found that the applicability is determined bythe pressure, the temperature ratio between electrons and heavy particles, the probe wavelength,and the chosen optical method’s refractive index measurement precision. Consequently, a commonmodel is deduced to describe the refractive index of plasma whether it be in LTE or not. In a word,this study is crucial to better apply optical methods based on measurements of the refractive indexto diagnose plasma flow fields.
Chen, Qiang,Luo, Zhao-Yun,Lin, Min,Lin, Qi-Li,Chen, Chan-Yu,Yang, Chun,Xie, Long-Xu,Li, Hui,Zheng, Jia-Kun,Yang, Li-Ye,Ju, Gui-Zhi Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.4
Background: Human papillomavirus (HPV) infection is the main cause of cervical cancer. Limited epidemiologic data of HPV prevalence are available for women attending hospitals in southern China. This study aimed to evaluate the profiles of HPV infection and cytology status in gynecological outpatients in Chaozhou City. Methods: A total of 2833 eligible women were enrolled. The HPV GenoArray test was used for HPV detection and genotyping. Nearly one half of the HPV positive women received liquid-based cytology test. Logistic regression analysis was performed to assess the predictable effects of age and genotype for categories of abnormal cytology. Results: The prevalence of overall, high-risk, and low-risk HPV infection were 24.5%, 19.5% and 8.4%, respectively. A U-shaped age-specific prevalence curve was observed in overall HPV and high-risk HPV, but not in low-risk HPV, which declined with age increasing. The 6 most common high-risk HPV type in descending order, were types 52, 16, 58, 18, 68, and 33. Age and HPV genotype were both important determinants of abnormal cytology incidence, the older women (>45 years) and those infected with HPV type 16 and/or 18 having the highest risk for abnormal cytology. Conclusion: Our findings support the hypothesis that second-generation HPV prophylactic vaccines including HPV-52 and -58 may offer higher protection for women residing in Chaozhou and neighboring cities in Guangdong.
Is Disintegration Occurring in the European Union: Empirics and Viewpoints of Integration Theories
( Yun-chen Lai ) 한국EU학회 2019 Asia-Pacific Journal of EU Studies Vol.17 No.2
The European Union (EU) has been a pioneer in regional integration and long been its most developed model. However, the recent increase in populism raises questions about the integration of the EU. Some pessimists even predict that disintegration of the EU might occur if populism becomes stronger. It is difficult to deny that the EU has faced a series of major setbacks in the last decade. However, setbacks do not equal disintegration. This thesis starts from recent disintegration phenomena in Europe and discusses the underlying reasons for those problems. Furthermore, this thesis attempts to utilize theoretical perspectives to elucidate recent trends. Mainstream integration theories will be discussed and reviewed. Transactionalism of Karl Deutsch will be used to observed whether the EU is really suffering from disintegration. Furthermore, Post-Functionalism will help to explain why certain factor, i.e., identity, matter than other indicators to explain the integration and disintegration of the EU.
Yun-liangWang,Yan-hong Chen,Chen-chen Xia,Xue-qin Xia,Rui-song Tao,Jia-sheng Hao 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.2
The complete mitochondrial genome of Parnassius epaphus (Lepidoptera: Papilionidae: Parnassiinae) was 15, 458 bp in length, harboring typical 13 protein-coding genes (PCGs), 22 transferRNA genes (tRNAs), two ribosomal RNA genes (rRNAs) and a non-coding control region (AT-rich region), with an 81.4% A + T content. The gene orientation and arrangement are the same as those of other sequenced lepidopterans. All PCGs startwith the typical ATN codon, with the exception of the COI gene that utilizes CGA as its initial codon. In addition, all PCGs terminate at the common stop codon TAA or TAG, except for the COII genewhich uses single T as its stop codon. All tRNAs possess the typical clover-leaf structure, except for tRNAser(AGN), inwhich the dihydrouridine (DHU) arm forms a simple loop. The predicted lrRNA and srRNA secondary structures harbor six domainswith 49 helices and three domains with 33 helices, respectively. In total, P. epaphus mitogenome harbors 12 intergenic spacers. The 122 bp longest one located between tRNAser(AGN) and tRNAGlu is characterized by the multiple duplications of TTTTTCTTTTT and TTTATCTATTTCTTTmotifs, and this sequence is the largest intergenic spacer among all butterflies detected to date. The 496 bp AT-rich region is located between srRNA and tRNAMet, containing some conserved structural characteristic of lepidopterans, such as the motif ATAGA followed by an 18-bp poly-T stretch, a microsatellite-like (AT)9 element preceded by the ATTTA motif. Moreover, two tRNA-like sequences (tRNATrp-like, tRNALeu(UUR)-like) and two sequence stretches potential to form stem-loop structures are also found in the AT-rich region.
Yun Chen,Jin Seuk Kim,권영환 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.3
A novel gem-dinitro bis(2,2-dinitropropyl ethylene) formal (BDNPEF) was synthesized and its potential application to plasticize energetic binders was investigated. BDNPEF was synthesized from aldol condensation of formaldehyde with 2,2-dinitropropanol (DNP-OH) and ethylene glycol (EG), followed by purification. One of the byproducts of this process was bis(2,2-dinitropropyl) formal (BDNPF), which is currently used as an energetic plasticizer. Compared to commercial nitro plasticizers, BDNPEF synthesized in this study showed good plasticization efficiency with a decrease in glass transition temperature (Tg) and viscosity of uncured glycidyl azide polymer (GAP) blends, as well as substantial ability to plasticize the GAP-based polyurethanes (PUs). BDNPEF has potential applications as an energetic plasticizer to engineer the properties of the GAP-based energetic PU binders.
Yun Chen,Yaqi Li 제어·로봇·시스템학회 2021 International Journal of Control, Automation, and Vol.19 No.9
This paper studies the stability analysis problem for time-varying delay systems. An appropriate Lyapunov-Krasovskii functional (LKF) is constructed where its derivative is a quadratic polynomial function of the delay. A novel negative condition of the mentioned quadratic function with two variable parameters is developed to ensure that the LKF derivative is negative, reducing conservatism on some similar results. Besides, an extended version of Bessel-Legendre inequality is introduced to be employed in the stability analysis of time-varying delay systems. Then, some stability criteria with less conservatism are derived for two kinds of the time-varying delay. Finally, the effectiveness of the proposed stability criteria is demonstrated through three examples.
Yun-Ru Chen,Ruo-Tong Zhao,Yi-Fang Xu,Yin-Jie Ma,Shao-Bo Hu,Xue-Hui Wang,Bing-Bing Fan,Yan-Ji Zhou,Yu-Bei Huang,Nicola Robinson,Jian-ping Liu,Zhao-Lan Liu 한국한의학연구원 2023 Integrative Medicine Research Vol.12 No.4
Background: Advanced pancreatic cancer (APC) is a fatal disease with limited treatment options. This study aims to evaluate the effectiveness and safety of different Chinese herbal injections (CHIs) as adjuvants for radiotherapy (RT) in APC and compare their treatment potentials using network meta-analysis. Methods: We systematically searched three English and four Chinese databases for randomized controlled trials (RCTs) from inception to July 25, 2023. The primary outcome was the objective response rate (ORR). Secondary outcomes included Karnofsky performance status (KPS) score, overall survival (OS), and adverse events (AEs). The treatment potentials of different CHIs were ranked using the surface under the cumulative ranking curve (SUCRA). The Cochrane RoB 2 tool and CINeMA were used for quality assessment and evidence grading. Results: Eighteen RCTs involving 1199 patients were included. Five CHIs were evaluated. Compound Kushen injection (CKI) combined with RT significantly improved ORR compared to RT alone (RR 1.49, 95 % CrI 1.21–1.86). Kanglaite (KLT) plus RT (RR 1.58, 95 % CrI 1.20–2.16) and CKI plus RT (RR 1.49, 95 % CrI 1.16–1.95) were associated with improved KPS score compared to radiation monotherapy, with KLT+RT being the highest rank (SUCRA 72.28 %). Regarding AEs, CKI plus RT was the most favorable in reducing the incidence of leukopenia (SUCRA 90.37 %) and nausea/vomiting (SUCRA 85.79 %). Conclusions: CKI may be the optimal choice of CHIs to combine with RT for APC as it may improve clinical response, quality of life, and reduce AEs. High-quality trials are necessary to establish a robust body of evidence. Protocol registration: PROSPERO, CRD42023396828.
A routing protocol based on Context-Awareness for Energy Conserving in MANET
Chen, Yun,Lee, Kang-Whan The Korea Institute of Information and Commucation 2007 Journal of information and communication convergen Vol.5 No.2
Ad hoc networks are a type of mobile network that function without any fixed infrastructure. One of the weaknesses of ad hoc network is that a route used between a source and a destination is to break during communication. To solve this problem, one approach consists of selecting routes whose nodes have the most stable link cost. This paper proposes a method for improving the low power distributed MAC. This method is based on the context awareness of the each nodes energy in clustering. We propose to select a new scheme to optimize energy conserving between the clustering nodes in MANET. And this architecture scheme would use context-aware considering the energy related information such as energy, RF strength, relative distances between each node in mobile ad hoc networks. The proposed networks scheme could get better improve the awareness for data to achieve and performance on their clustering establishment and messages transmission. Also, by using the context aware computing, according to the condition and the rules defined, the sensor nodes could adjust their behaviors correspondingly to improve the network routing.