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Low-dose Radiation Induces Antitumor Effects and Erythrocyte System Hormesis
Yu, Hong-Sheng,Liu, Zi-Min,Yu, Xiao-Yun,Song, Ai-Qin,Liu, Ning,Wang, Hao Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.7
Objective: Low dose radiation may stimulate the growth and development of animals, increase life span, enhance fertility, and downgrade the incidence of tumor occurrence.The aim of this study was to investigate the antitumor effect and hormesis in an erythrocyte system induced by low-dose radiation. Methods: Kunming strain male mice were subcutaneously implanted with S180 sarcoma cells in the right inguen as an experimental in situ animal model. Six hours before implantation, the mice were given 75mGy whole body X-ray radiation. Tumor growth was observed 5 days later, and the tumor volume was calculated every other day. Fifteen days later, all mice were killed to measure the tumor weight, and to observe necrotic areas and tumor-infiltration-lymphoreticular cells (TILs). At the same time, erythrocyte immune function and the level of 2,3-diphosphoglyceric acid (2,3-DPG) were determined. Immunohistochemical staining was used to detect the expression of EPO and VEGFR of tumor tissues. Results: The mice pre-exposed to low dose radiation had a lower tumor formation rate than those without low dose radiation (P < 0.05). The tumor growth slowed down significantly in mice pre-exposed to low dose radiation; the average tumor weight in mice pre-exposed to low dose radiation was lighter too (P < 0.05). The tumor necrosis areas were larger and TILs were more in the radiation group than those of the group without radiation. The erythrocyte immune function, the level of 2,3-DPG in the low dose radiation group were higher than those of the group without radiation (P < 0.05). After irradiation the expression of EPO of tumor tissues in LDR group decreased with time. LDR-24h, LDR-48h and LDR-72h groups were all statistically significantly different from sham-irradiation group. The expression of VEGFR also decreased, and LDR-24h group was the lowest (P < 0.05). Conclusion: Low dose radiation could markedly increase the anti-tumor ability of the organism and improve the erythrocyte immune function and the ability of carrying $O_2$. Low-dose total body irradiation, within a certain period of time, can decrease the expression of hypoxia factor EPO and VEGFR, which may improve the situation of tumor hypoxia and radiosensitivity of tumor itself.
An improved backstepping design for the control of an underactuated inverted pendulum
Yu-Sheng Lu,Hua-Hsu Chiu,Shu-Fen Lien 대한기계학회 2013 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.27 No.3
This paper presents an improved backstepping design (IBD) for the control of a new type of underactuated inverted pendulum. The characteristics and possible applications of the inverted pendulum are presented. Nonlinear models and a linearized model are given for a straightforward explanation of its dynamic features. The conventional backstepping design (CBD) is revisited for this plant. The IBD is then used to reduce the complexity of the design and to allow the specification of transient characteristics, to improve the system’s performance. Experimental studies are conducted to investigate the effectiveness of the proposed scheme.
중국 지역 간의 정보격차와 G2C전자정부서비스의 이용의도에 관한 연구
YU DENG SHENG,ZHANG YUANYUAN,Gyoo Gun Lim 한국IT서비스학회 2020 한국IT서비스학회 학술대회 논문집 Vol.2020 No.1
2000년대부터 중국 경제성장을 주도하는 정보통신산업에 대해 집중적으로 육성함으로써 정보통신기술이 급속한 속도로 발전하여 확산되었다. 그러나 지역 간의 경제성장이 빠른 지역과 그렇지 못한지역 간의 정보통신기술의 확산 속도 및 스마트 기기 보급의 격차는 여전히 심한 것으로 나타났다.인터넷 및 정보통신기술을 기반으로 전자정부서비스를 이용자 수가 지속적으로 증가하고 있지만 지역경제가 높은 도시와 낮은 도시 간에 전자정부서비스의 활용지수의 격차가 여전히 큰 것으로 현성 되어 있다. 본 연구는 정보격차의 변수인 접근성, 역량성, 활용성 및 역기능가 G2 C전자정부서비스의 이용의도에 어떠한 영향을 미치는 지에 파악하여 밝히고자 한다. 또한 인구사 회학적 특성 및 지역특성측면에 지각된 정보격차의 차이가 존재하는 지에 검토하여 확인하고자 한다. 본 연구의 결과를통해 지능정보사회에 더욱 편리하고 스마트할 수 있는 전자정부서비스를 구축 시에 기본 자료가될 수 있도록 기대된다. 또한 향후 중국 지역 간의 정보격차를 해소할 수 있는 방안을 모색함으로써 전자정부서비스 시민활용성 및 활성화에 기여할 수 있는 것으로 기대된다.
The Dark Side of Democratic Participation and Its Cures
Yu-sheng Lin(林祐聖) 동서대학교(동아시아연구원) 2022 동아시아와 시민 Vol.1 No.-
민주주의의 교육적 기능은 건강한 민주주의를 재생산한다는 점에서 중요하다. 하지만, 우리는 이러한 배양을 당연하게 여겨서는 안 된다. 민주주의를 사고하는 측면에서 다른 요소들이 존재하기 때문인데, 그 의미는 사람들이 또 다른 민주적 교훈들을 배울 수 있다는 점이다. 이 에세이에서, 나는 민주주의 교육의 장이 직면하는 위험을 설명하기 위해 대만의 홍수 피해 지역의 사례를 사용한다. 나는 또한 홍수 피해 지역의 주민참여예산제도(PB)들이 교육 기능을 상실하는 이유를 요약한다. 진료소에서 홍수로 인한 지역 사건까지, 나는 이상적인 민주주의 교육의 장을 건설하고 민주주의 교육이 긍정적으로 순환되도록 되돌리기 위해서는 문화적 해결책이 가장 중요하다고 주장한다. The educational function of democracy is important for reproducing a healthy democracy. However, we should not take this reproduction for granted. Since there are different kinds of democratic imaginations, it means people may learn different democratic lessons. In this essay, I use the case of the Flooding district in Taiwan to illustrate the risk a democratic school faces. I also summarize the reasons why PB in the Flooding district loses its educational function. From the clinic to the case of the Flooding district, I argue that the cultural solution is most important for building an ideal democratic school and bringing democratic education back to a positive loop.
( Yu-cheng Yang ),( Kai-sheng Tseng ),( Xiang-yu Huang ),( Sheng-hao Chen ),( Joe-air Jiang ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
In this study, a generic intelligent wireless sensing platform with the IoT and wireless transmission technology is established for greenhouse monitoring, which is capable of greenhouse data collection and analysis. The data analyzed by a cloud server would provide important information regarding the efficiency of greenhouse management and cultivation methods. To monitor greenhouse related parameters, an embedded board is placed in a greenhouse as the gateway. Monitoring data and images collected by sensors deployed in the greenhouse are transmitted to the embedded board via an Ethernet or wireless transmission module. The data are eventually sent to a database by wireless AP. The AP connects to the internet by using a 4G USB dongle, which can provide sufficient data transmission speed for real-time data transmission. In wireless hotspots and areas with Wi-Fi, not only can images be transmitted to the cloud, but also can the mobile APP be used to perform remote monitoring, so experimental observations are no longer affected by geographical impacts. Moreover, to ensure the preservation of images and numeric data, the gateway carries a high durability secure digital (SD) memory card to store images and data; if the network encounters some problems, such as unable to connect and a lack of network traffic, the data can be stored in the SD card. Thus, the proposed platform is able to perform heavy information transmission duties and support performing all wireless monitoring tasks. In addition, the analyzed data can be used by agricultural personnel to provide critical cultivation suggestions.
Sheng Sheng,Xiaorui Zhang,Yu Zheng,Jiao Wang,Yu Zhou,Chengwu Liao,Jun Wang,Fu-an Wu 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.1
The effects of six sugar resources (fructose, glucose, sucrose, trehalose, raffinose and honey) on the longevity, oviposition performance and nutrition levels of Meteorus pulchricornis, a thelytokous larval endoparasitoid of the common cutworm Spodoptera litura were examined under laboratory conditions. Female adults of M. pulchricornis fed 1 M fructose, glucose, trehalose or sucrose solutions survived longer than those fed on other sugar solutions or water. When provided with honey or sucrose solutions, the female parasitoids laid more offspring than those fed other sugar diets or the control. The body size of offspring driven from honey-, fructose-, sucrose-, and glucose-fed females, along with water-fed group, were larger than the trehalose- and raffinose-fed females. However, the emergence rates of all offspring generated from different sugars- and water-fed females were similar. When separately given honey, sucrose or fructose, M. pulchricornis females accumulated fructose at a higher level than the other groups. Parasitoid wasps fed trehalose solution accumulated the highest level of total sugar. Glycogen levels and lipid content were highest at emergence and then decreased across all diets. In addition, females fed on trehalose had the highest level of glycogen compared to other sugar diets and water control regardless of emergency level. Females fed trehalsoe, fructose, and glucose solutions had a higher level of lipid than those fed other sugar solutions and water at life end. The outcome of this study can benefit both laboratory rearing and management interventions that improve sugar sources for the parasitoid in the field.