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DGPS/IMU-based Photogrammetry in China

  • Yingcheng, Li;Xueyou, Li;Jicheng, Zhao;Xunping, Gong;Tang, Liang
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.1215-1220
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    • 2003
  • People's Republic of China is one of the most rapidly developing countries in the world today. There is a great demand on highly actual and accurate spatial information of the whole country, especially of West China which becomes the focus of development of the Chinese government right now and in the next years, but where still not enough topographic maps are available. This raises great challenges to the surveying and mapping community in China. Facing the new challenges the Chinese Academy of Surveying and Mapping (CASM) started its pioneer work early 2002 to explore new techniques and technologies available today toward increasing the map productivity. With import of a CCNS/AEROcontrol system in November 2002 the first DGPS/IMU-based photogrammetric project in China was successfully accomplished jointly by CASM and the Germany-based companies IGI and Techedge. Two photogrammetric blocks of 1:4,000 and 1:20,000 photo scale, respectively, were flown in Anyang, China. Direct georeferencing and integrated sensor orientation were conducted. Results achieved were proven by using ground check points and compared with those of aerial triangulation. Orthophotos generated based on direct georeferencing shows the high efficiency and quality, and thus proved the promise of the new technology. Furthermore several DGPS/IMU-based photogammetric projects was accomplished one by one and a big project of more than 100,000 km2 in the Inner Mongolia will be started in August 2003. The paper presents experiences with DGPS/IMU-based photogrammetry in China. Results achieved in concrete projects are shown and evaluated. Politic and technical specialties in China are discussed. Conclusions outline the potential of DGPS/IMU-based photogrammetric production in China.

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Research Trends of Herbal Medicines for Obesity: Mainly since 2015 to 2019 (한국에서 비만 치료에 쓰이는 한약에 대한 연구 동향 보고: 2015년부터 2019년까지의 국내외 논문을 중심으로)

  • Kim, Soo-Jeon;Seo, Yeon-Ho;Lee, Han-Sol;Chang, Ho-Kyung;Cho, Jae-Heung;Kim, Koh-Woon;Song, Mi-Yeon
    • Journal of Korean Medicine Rehabilitation
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    • v.30 no.4
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    • pp.89-103
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    • 2020
  • Objectives This study has been conducted to verify frequently used herbs and herbal formulas to treat obesity in Korea during 2015 to 2019. Methods Publications related to treatment of obesity using herbal medicines from 2015 to 2019 were retrieved from 12 databases (PubMed, EMBASE, Scopus, China National Knowledge Infrastructure [CNKI], Koreanstudies Information Service System [KISS], National Digital Science Library [NDSL], Research Information Sharing Service [RISS], DBPIA, KMBASE, KoreaMed, KoreanTK, Oriental Medicine Advanced Searching Integrated System [OASIS]). Extracted articles were analyzed in terms of publication year, journal, and type of herbs. Results A total of 136 studies have been included in this study. 33 herbal formulaes and 129 herbs have been analyzed. Taeyeumjowui-tang was the most frequently studied herbal formulae and Ephedrae Herba was the most frequently studied herb. Ginseng Radix was the most frequently studied single herb in isolation from herbal formulae. Conclusions These results suggest that various herbs and herbal formulae can be used to treat obesity. Since this study includes every type of study, additional studies based on clinic are thought to be necessary.

The Effects of Zingiberis rhizoma on Hypothyroidism Rat induced by PTU (건동(乾童)이 PTU로 유발된 Rat의 갑상선 기능저하증에 미치는 영향)

  • Kang, Ki-Hoon;Lee, Byung-Cheol;Ahn, Se-Young;Doo, Ho-Kyung;Ahn, Young-Min
    • The Journal of Internal Korean Medicine
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    • v.27 no.3
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    • pp.677-687
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    • 2006
  • Objective : Hypothyroidism is a common disease of the endocrinal system. characterized by fatigue, cold intolerance, bradycardia, and so on. Clinically, Levothyroxine(L-T4) has been usually used for replacement therapy, but it often has side effects. so many hypothyroidism patients wants oriental medical therapy. Zingiberis rhizoma, traditionally has been used in treatment of coldness, fatigue, and bradycardia. In this study. I investigated the therapeutic effects of Zingiberis rhizoma on PTU induced hypothyroidism in rats. Methods : I used two-month-old rats administered PTU and induced with hypothyroidism. After 2 weeks. Zingiberis rhizoma and thyroxine were daily administered, respectively. Body weights was measured every weeks. After 4 weeks, blood samples were taken and analyzed biochemically and T4 and TSH were measured by ELISA kits. Results : In comparison with normal groups, control groups showed hypothyroidism with low T4 and high TSH level. In Zingibris rhizoma administration groups were observed T4 level elevation, this elevation was dependent on the dose of Zingibris rhizoma. Between experimental groups and control groups, there was no difference in TSH level, statistically. Changes of biochemistry were not observed in any experimental groups. Conclusions : These findings suggest that Zingiberis rhizoma makes thyroid cells producing thyroid hormones. There is also a non-toxic effect on the cardiovascular system, liver and kidney function. So, Zingiberis rhizoma should be an effective agents for treating hypothyroidism.

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Recent Domestic and International Trends in Clinical Research of Herbal Medicine Treatment for Crohn's disease (크론병의 한약 치료에 대한 최근 국내외 임상연구 동향)

  • Lee, Shin Hee;Heo, Yu Jin;Cho, Yun Soo
    • The Journal of Pediatrics of Korean Medicine
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    • v.35 no.4
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    • pp.56-74
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    • 2021
  • Objectives The purpose of this study is to analyze the trend of herbal medicine treatment, treatment's effect and stability for Crohn's disease by reviewing clinical studies published over the past 5 years. Methods 22 articles which were published from 2017 to August, 2021 were obtained from the ScienceON, Research information sharing service (RISS), Koreanstudies Information Service System (KISS), Oriental medicine advanced searching integrated system (OASIS), China national knowledge infrastructure (CNKI), Pubmed. We analyzed the literature in regards to the treatment methods and results. Results There were 6 case reports, 1 controlled clinical trial, and 15 randomized controlled trial and in most cases, herbal medicines and Western medicines were administered in combination. The pathology of damp-heat due to spleen deficiency was the most common, and Sijunzi-tang and Shenling Baishu san were the most commonly used. As a result of the treatment, it was found that the combined administration of the herbal medicine and the Western medicine was more effective than the administration of the Western medicine alone. Conclusions Herbal treatment of Crohn's disease induced high cure rate safely than when only western treatment was applied. Future studies on safety and studies that can suggest specific guidelines for the combined administration of western and herbal medicines are needed.

Cyclic testing of scaled three-story special concentrically braced frame with strongback column

  • Chen, Chui-Hsin;Tsai, Yi-Rung;Tang, Yao
    • Earthquakes and Structures
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    • v.17 no.2
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    • pp.163-173
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    • 2019
  • For Special Concentrically Braced Frame (SCBF), it is common that the damage concentrates at a certain story instead of spreading over all stories. Once the damage occurs, the soft-story mechanism is likely to take place and possibly to result in the failure of the whole system with more damage accumulation. In this study, we use a strongback column which is an additional structural component extending along the height of the building, to redistribute the excessive deformation of SCBF and activate more structural members to dissipate energy and thus avoid damage concentration and improve the seismic performance of SCBF. We tested one-third-scaled, three-story, double-story X SCBF specimens with static cyclic loading procedure. Three specimens, namely S73, S42 and S0, which represent different combinations of stiffness and strength factors ${\alpha}$ and ${\beta}$ for the strongback columns, were designed based on results of numerical simulations. Specimens S73 and S42 were the specimens with the strongback columns, and S0 is the specimen without the strongback column. Test results show that the deformation distribution of Specimen S73 is more uniform and more brace members in three stories perform nonlinearly. Comparing Drift Concentration Factor (DCF), we can observe 29% and 11% improvement in Specimen S73 and S42, respectively. This improvement increases the nonlinear demand of the third-story braces and reduces that of the first-story braces where the demand used to be excessive, and, therefore, postpones the rupture of the first-story braces and enhances the ductility and energy dissipation capacity of the whole SCBF system.

Preparation, Structural Investigation and Thermal Decomposition Behavior of Two High-Nitrogen Energetic Materials: ZTO·2H2O and ZTO(phen)·H2O

  • Ma, Cong;Huang, Jie;Zhong, Yi Tang;Xu, Kang Zhen;Song, Ji Rong;Zhang, Zhao
    • Bulletin of the Korean Chemical Society
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    • v.34 no.7
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    • pp.2086-2092
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    • 2013
  • Two new high-nitrogen energetic compounds $ZTO{\cdot}2H_2O$ and $ZTO(phen){\cdot}H_2O$ have been synthesized (where ZTO = 4,4-azo-1,2,4-triazol-5-one and phen = 1,10-phenanthroline). The crystal structure, elemental analysis and IR spectroscopy are presented. Compound 1 $ZTO{\cdot}2H_2O$ crystallizes in the orthorhombic crystal system with space group Pnna and compound 2 $ZTO(phen){\cdot}H_2O$ in the triclinic crystal system with space group P-1. In $ZTO(phen){\cdot}H_2O$, there is intermolecular hydrogen bonds between the -NH group of ZTO molecule (as donor) and N atom of phen molecule (as acceptor). Thermal decomposition process is studied by applying the differential scanning calorimetry (DSC) and thermo thermogravimetric differential analysis (TG-DTG). The DSC curve shows that there is one exothermic peak in $ZTO{\cdot}2H_2O$ and $ZTO(phen){\cdot}H_2O$, respectively. The critical temperature of thermal explosion ($T_b$) for $ZTO{\cdot}2H_2O$ and $ZTO(phen){\cdot}H_2O$ is $282.21^{\circ}C$ and $195.94^{\circ}C$, respectively.

Maximum Canopy Height Estimation Using ICESat GLAS Laser Altimetry

  • Park, Tae-Jin;Lee, Woo-Kyun;Lee, Jong-Yeol;Hayashi, Masato;Tang, Yanhong;Kwak, Doo-Ahn;Kwak, Han-Bin;Kim, Moon-Il;Cui, Guishan;Nam, Ki-Jun
    • Korean Journal of Remote Sensing
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    • v.28 no.3
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    • pp.307-318
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    • 2012
  • To understand forest structures, the Geoscience Laser Altimeter System (GLAS) instrument have been employed to measure and monitor forest canopy with feasibility of acquiring three dimensional canopy structure information. This study tried to examine the potential of GLAS dataset in measuring forest canopy structures, particularly maximum canopy height estimation. To estimate maximum canopy height using feasible GLAS dataset, we simply used difference between signal start and ground peak derived from Gaussian decomposition method. After estimation procedure, maximum canopy height was derived from airborne Light Detection and Ranging (LiDAR) data and it was applied to evaluate the accuracy of that of GLAS estimation. In addition, several influences, such as topographical and biophysical factors, were analyzed and discussed to explain error sources of direct maximum canopy height estimation using GLAS data. In the result of estimation using direct method, a root mean square error (RMSE) was estimated at 8.15 m. The estimation tended to be overestimated when comparing to derivations of airborne LiDAR. According to the result of error occurrences analysis, we need to consider these error sources, particularly terrain slope within GLAS footprint, and to apply statistical regression approach based on various parameters from a Gaussian decomposition for accurate and reliable maximum canopy height estimation.

Effect of traditional dry cupping therapy on heavy menstrual bleeding in menorrhagia: A preliminary study

  • Sultana, Arshiya;Rahman, Khaleeq Ur
    • CELLMED
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    • v.2 no.4
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    • pp.33.1-33.3
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    • 2012
  • Menorrhagia (kasrate tams) is the most common gynecologic complaint in contemporary gynecology, affecting 10 to 15% of the adult female population. It can occur at any age. In the Unani system of medicine, since antiquity, dry cupping therapy (hijamat bila shurt) has been used to treat menorrhagia. An effort was made to evaluate the usefulness of dry cupping on excessive menstrual blood loss in menorrhagia with a well validated menstrual pictogram. This study was conducted on 15 patients at the National Institute of Unani Medicine, Hospital Bangalore, from January 2010 and July 2010. Unmarried or married patients aged 17 - 47 year with a history of excessive or prolonged bleeding per vaginum were included. Two large cups (with 5.7 cm internal diameter) were applied below each breast for 15 min, only once during the menstrual period when the patient reported to the outpatient department. If the menstrual flow was not reduced, the next day again dry cupping was repeated. The outcome was to assess the efficacy of dry cupping on the reduction in the amount of menstrual blood loss. The data was analyzed by the Wilcoxon matched test. The mean scores of menstrual blood loss before and after the treatment was 400.26 (277.95) and 48.4 (32.082) ml respectively, p = 0.002, considered statistically significant. A dry cupping therapy is a useful treatment modality in decreasing the amount of menstrual blood flow in menorrhagia. Further randomized controlled clinical trials and validation are needed in a large population.

Thermal-hydraulic analysis of a new conceptual heat pipe cooled small nuclear reactor system

  • Wang, Chenglong;Sun, Hao;Tang, Simiao;Tian, Wenxi;Qiu, Suizheng;Su, Guanghui
    • Nuclear Engineering and Technology
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    • v.52 no.1
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    • pp.19-26
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    • 2020
  • Small nuclear reactor features higher power capacity, longer operation life than conventional power sources. It could be an ideal alternative of existing power source applied for special equipment for terrestrial or underwater missions. In this paper, a 25kWe heat pipe cooled reactor power source applied for multiple use is preliminary designed. Based on the design, a thermal-hydraulic analysis code for heat pipe cooled reactor is developed to analyze steady and transient performance of the designed nuclear reactor. For reactor design, UN fuel with 65% enrichment and potassium heat pipes are adopted in the reactor core. Tungsten and LiH are adopted as radiation shield on both sides of the reactor core. The reactor is controlled by 6 control drums with B4C neutron absorbers. Thermoelectric generator (TEG) converts fission heat into electricity. Cooling water removes waste heat out of the reactor. The thermal-hydraulic characteristics of heat pipes are simulated using thermal resistance network method. Thermal parameters of steady and transient conditions, such as the temperature distribution of every key components are obtained. Then the postulated reactor accidents for heat pipe cooled reactor, including power variation, single heat pipe failure and cooling channel blockage, are analyzed and evaluated. Results show that all the designed parameters satisfy the safety requirements. This work could provide reference to the design and application of the heat pipe cooled nuclear power source.

Regulation of autonomic functions following two high frequency yogic breathing techniques

  • Mondal, Joydeb;Balakrishnan, Ragavendrasamy;Krishnamurthy, Manjunath Nandi
    • CELLMED
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    • v.5 no.1
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    • pp.4.1-4.4
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    • 2015
  • Yoga is an ancient Indian system of life, encompassing various practices including practices for self-discipline and also for regulating the health states of the individual, being practiced for thousands of years. The present study aims at understanding the effect of two high frequency breathing practices over autonomic nervous system. Forty healthy male volunteers of age $21{\pm}2$ years with $9{\pm}3$ months of Yoga practice experience were recruited. The two high frequency Yoga breathing practices, kapalabhati (KB) and bhastrika (BH) were given as interventions randomly on either of the two days to minimise laboratory bias. They were assessed before and immediately after the interventions for heart rate, respiratory rate, heart rate variability (HRV), blood pressure and peripheral oxygen saturation. There was a significant increase in heart rate (p<0.01; p<0.001), systolic blood pressure (p<0.01; p<0.001), NN50 (p<0.01; p<0.001) component of HRV for both KB and BH groups respectively. There was a significant reduction in respiratory rate in both the groups (p<0.001, and p<0.05, BH and KB respectively) immediately following intervention. A significant increase in LF component of HRV and reduction in Diastolic blood pressure and high frequency (HF)component following KB was also observed (p<0.05, for all comparisons). The Mean peripheral oxygen saturation remained unaltered in both the groups (p>0.05).The results suggest that high frequency yoga breathing practices induce physiological arousal immediately as evidenced by increased blood pressure and heart rate. The sympathetic arousal was more following KB session as evidenced by an increased diastolic blood pressure, LF power and a decrease in HF power of HRV as compared to the BH session.