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Study on seismic performance of shaking table model of full light-weight concrete utility tunnel

  • Yanmin Yang;Qi Yuan;Yongqing Li;Jingyu Li;Yuan Gao;Yuzhe Zou
    • Computers and Concrete
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    • v.32 no.1
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    • pp.15-26
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    • 2023
  • In order to study the anti-seismic performance of full light-weight concrete utility tunnel, EL Centro seismic waves were input, and the seismic simulation shaking table test was carried out on the four utility tunnel models. The dynamic characteristics and acceleration response of the system consisting of the utility tunnel structure and the soil, and the interlayer displacement response of the structure were analyzed. The influence law of different construction methods, haunch heights and concrete types on the dynamic response of the utility tunnel structure was studied. And the experimental results were compared with the finite element calculation results. The results indicated that with the increase of seismic wave intensity, the natural frequency of the utility tunnel structure system decreased and the damping ratio increased. The assembling composite construction method could be equivalent to replace the integral cast-in-place construction method. The haunch height of the assembling composite full light-weight concrete utility tunnel was increased from 30 mm to 50 mm to enhance the anti-seismic performance during large earthquakes. The anti-seismic performance of the full light-weight concrete utility tunnel was better than that of the ordinary concrete utility tunnel. The peak acceleration of the structure was reduced by 21.8% and the interlayer displacement was reduced by 45.8% by using full light-weight concrete. The finite element simulation results were in good agreement with the experimental results, which could provide reference for practical engineering design and application.

Bacterial Microbiome Differences between the Roots of Diseased and Healthy Chinese Hickory (Carya cathayensis) Trees

  • Xiao-Hui Bai;Qi Yao;Genshan Li;Guan-Xiu Guan;Yan Fan;Xiufeng Cao;Hong-Guang Ma;Mei-Man Zhang;Lishan Fang;Aijuan Hong;Dacai Zhai
    • Journal of Microbiology and Biotechnology
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    • v.33 no.10
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    • pp.1299-1308
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    • 2023
  • Carya cathayensis is an important economic nut tree that is endemic to eastern China. As such, outbreaks of root rot disease in C. cathayensis result in reduced yields and serious economic losses. Moreover, while soil bacterial communities play a crucial role in plant health and are associated with plant disease outbreaks, their diversity and composition in C. cathayensis are not clearly understood. In this study, Proteobacteria, Acidobacteria, and Actinobacteria were found to be the most dominant bacterial communities (accounting for approximately 80.32% of the total) in the root tissue, rhizosphere soil, and bulk soil of healthy C. cathayensis specimens. Further analysis revealed the abundance of genera belonging to Proteobacteria, namely, Acidibacter, Bradyrhizobium, Paraburkholderia, Sphaerotilus, and Steroidobacter, was higher in the root tissues of healthy C. cathayensis specimens than in those of diseased and dead trees. In addition, the abundance of four genera belonging to Actinobacteria, namely, Actinoallomurus, Actinomadura, Actinocrinis, and Gaiella, was significantly higher in the root tissues of healthy C. cathayensis specimens than in those of diseased and dead trees. Altogether, these results suggest that disruption in the balance of these bacterial communities may be associated with the development of root rot in C. cathayensis, and further, our study provides theoretical guidance for the isolation and control of pathogens and diseases related to this important tree species.

A Fiber Spool's Vibration Sensitivity Optimization Based on Orthogonal Experimental Design

  • Jing Gao;Linbo Zhang;Dongdong Jiao;Guanjun Xu;Xue Deng;Qi Zang;Honglei Yang;Ruifang Dong;Tao Liu;Shougang Zhang
    • Current Optics and Photonics
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    • v.8 no.1
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    • pp.45-55
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    • 2024
  • A fiber spool with ultra-low vibration sensitivity has been demonstrated for the ultra-narrow-linewidth fiber-stabilized laser by the multi-object orthogonal experimental design method, which can achieve the optimization object and analysis of influence levels without extensive computation. According to a test of 4 levels and 4 factors, an L16 (44) orthogonal table is established to design orthogonal experiments. The vibration sensitivities along the axial and radial directions and the normalized sums of the vibration sensitivities are determined as single objects and comprehensive objects, respectively. We adopt the range analysis of object values to obtain the influence levels of the four design parameters on the single objects and the comprehensive object. The optimal parameter combinations are determined by both methods of comprehensive balance and evaluation. Based on the corresponding fractional frequency stability of ultra-narrow-linewidth fiber-stabilized lasers, we obtain the final optimal parameter combination A3B1C2D1, which can achieve the fiber spool with vibration sensitivities of 10-12/g magnitude. This work is the first time to use an orthogonal experimental design method to optimize the vibration sensitivities of fiber spools, providing an approach to design the fiber spool with ultra-low vibration sensitivity.

A Study on the Cold and Heat Syndromes in Dongyi-Soose-Bowon (『동의수세보원(東醫壽世保元』에 나타난 한열증(寒熱證)에 대한 고찰(考察))

  • Lee, Kyung-ro;Kim, Kyung-yoo
    • Journal of Sasang Constitutional Medicine
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    • v.11 no.1
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    • pp.79-102
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    • 1999
  • 1. Purpose : This studied Cold and Heat syndromes about Four-form Constitutional Physicalogy. It is for help the comprehension, diagnosis and treatment of physicalogy and pathology about each type. 2. Method : I studied the conception of Cold and Heat sydrome in the existing Oriental Medicine before Constitutinal Medicine, through a few symptoms(constipation, diarrhea, sweat, urine, vomiting) and physicalogy, pathology in Dongyi-Soose-Bowon. 3. Results & Conclusion : In the viewpoint of Pathological Disease and a Chapter Name, Shaoyin has the Exterior-Febrile and Interior-Cold Disease, as the constitutional primary cause of the Interior-Cold Disease, Shaoyang has the Exterior-Cold and Interior-Febrile Disease, as the Interior-Febrile Disease, accoreing to the process of the promote incomings and outgoings of food stuffs of the Spleen and Kidney. By the way, Taiyin is classified into 'One who had had the Cold Disease Primarily and the Febrile', Taiyang has the nature of 'No Cold, No Heat' that is not tendency to The Cold or Heat sydromes, according to promote the respiration of air and fluid of the Liver and Lung. In the viewpoint of a few symptoms(constipation, diarrhea, sweat, urine, vomiting), we are known that cold and heat connception of the each symptome is fixed, according to nature of cold and heat in each type. These express the methood of 'constitutional demonstration'.

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Comparison of the Genomic Structure of the Heat Shock Protein-88(Hsp88) Genes in the Four Entomopathogenic Fungal Strains, Paecilomyces tenuipes Jocheon-1, P. tenuipes, Cordyceps militaris, and C. pruinosa

  • Liu, Ya-Qi;Park, Nam-Sook;Kim, Yong-Gyun;Kim, Keun-Ki;Park, Hyun-Chul;Son, Hong-Joo;Lee, Sang-Mong
    • International Journal of Industrial Entomology and Biomaterials
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    • v.25 no.1
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    • pp.99-110
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    • 2012
  • Comparison on the genomic structure and phylogenetic relationship of the Hsp88 genes from P. tenuipes Jochoen-1, P. tenuipes, C. militaris and C. pruinosa was described. The Hsp88 genes from the three entomopathogenic strains, P. tenuipes Jocheon-1(strain), P. tenuipes(original species), and C. militaris contain the identical genomic structure, namely 5 introns and 6 exons with the length of 13, 62, 32, 1,438, 306, 288 nucleotides encoding 713 amino acid residues, whereas in case of C. pruinosa, it contains 4 introns and 5 exons with the length of 13, 62, 32, 1,744, 288 nucleotides encoding 713 amino acid residues. The genomic DNA length of the Hsp88 genes from P. tenuipes Jocheon-1 and P. tenuipes are both 2,600 nucleotides long in size. The Hsp88 genes from C. militaris and C. pruinosa are 2,582, 2,576 nucleotides long in size, respectively. Hsp88 genes of the P. tenuipes Jochoen-1, P. tenuipes, C. militaris and C. pruinosa also contain the conserved ATP-binding domain. Phylogenetic analysis of the Hsp genes of the four strains tested in this study showed that the fungal Hsp88 is divided into two separate clades, ascomycetes and deutromycete. Within the ascomycetes fungal clade, the P. tenuipes Jochoen-1 and P. tenuipes formed a subgroup, on the other hand, C. militaris and C. pruinosa formed another subgroup. Pair-wise comparison of P. tenuipes Jocheon-1 Hsp88 with those of P. tenuipes, C. militaris and C. pruinosa Hsp88s revealed significant identity in deduced amino acid sequence among these strains. The P. tenuipes Jocheon-1 Hsp88 showed 99% identity with the P. tenuipes, 97% identity with the C. militaris, and 98% identity with the C. pruinosa.

Measuring Effects of Quality Improvement through the Development of Critical Pathway for Gamma Knife Radiosurgery (당일 감마나이프수술 환자의 표준진료지침 개발을 통한 질 향상 효과 측정)

  • Kim, Moo Seong;Ha, So Young;Bae, Yoon Hyuk;Jung, Yong Tae;Kim, Sung Tae;Lee, Won Hee;Go, Yeon Joo
    • Quality Improvement in Health Care
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    • v.18 no.1
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    • pp.27-36
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    • 2012
  • Objectives : A protocol called "critical pathway" was developed to standardize the management of hospital patients the day after they underwent gamma knife radiosurgery. The quality of improvement in patient outcomes was evaluated. Methods : Critical pathway was developed, according to the regulations of the I hospital, by analyzing the medical records of 22 inpatients who underwent gamma knife surgery within the period from January to April 2011 on the day of the surgery. The study included a group of 22 patients admitted to the hospital the day after they underwent gamma knife radiosurgery, between July and September 2011. The control group included 22 patients who had surgery employing the same method within the period from May to June 2011. To measure the effects on quality improvement, the average length of stay, the execution rate of the hospital discharge notice system, daily hospital revenue, and the satisfaction of the patients and the medical team were assessed. The patient questionnaire employed a four-point Likert scale while the medical-staff questionnaire employed a five-point Likert scale. Result : The average length of stay was significantly shorter in the study group compared to the control group (2.3 days vs. 3.8 days, P<0.05). The execution rate of the hospital discharge notice system was higher in the study group (100% vs. 72%) than in the control group. Daily hospital revenues were higher by 264,178 Korean won in the study group when compared to the control group. The study group showed greater satisfaction of patients compared to the control group based on a four-point Likert scale (P<0.05). The study group showed greater satisfaction in medical team compared to the control group based on a five-point Likert scale (P<0.05). Conclusion : The development and implementation of a critical pathway protocol for hospital admission the day after gamma knife radiosurgery is an effective care process that improves the clinical quality.

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T'oegye's Understanding of Zhuzi's Philosophy and its Characteristics (퇴계의 주자철학에 대한 이해와 그 특색 - 리(理)의 동정(動靜)·발(發)·도(到)를 중심으로 -)

  • Jeong, Sang-bong
    • The Journal of Korean Philosophical History
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    • no.37
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    • pp.47-70
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    • 2013
  • The purpose of this paper is to figure out T'oegye's philosophy and its characteristics in comparison with Zhuzi's. T'oegye is well-known as the representative of Neo-confucianism in Korea. But his posterior scholars and even contemporary scholars have various viewpoints about his philosophy. So they give him some different evaluation. After Zhuzi's death 300 years later, T'oegye has accepted Zhuzi's philopophical thoughts. In addition, he has added his own philosophical insights on them. First, he indicates concretely the metaphysical activity of li through lidong that Zhuzi has mentioned in some measure. Second, under the ontological aspect of li, he explains that Four beginnings come from li. It implies that li manifests and qi follows. Finally he points out lidao--i.e. li manifests itself, about wuge in his epistemology. Here we can say that whatever his metaphysics/the theory of mind and heart, and epistemology, the whole system of T'oegye's philosophy has its theoretical coherence. He has succeeded Zhuzi's philopophical thoughts thoroughly and furthermore developed Neo-confucian theory in East Asia that has not made before.

The Study of Effect and Safety related to Dong-gi Acupuncture(DGA) and Complex therapy on Lumbago due to blood stasis and sprain (좌섬(挫閃)·어혈(瘀血) 요통(腰痛)에 동기침법(動氣鍼法) 및 복합치료(複合治療)의 유효성(有效性) 및 안정성(安定性) 연구(硏究))

  • Kim, Kee-Hyun;Lim, Hyung-Ho;Hwang, Hyeon-Seo;Song, Ho-Sueb;Song, Young-Sang;Kwon, Soon-Jung;Kim, Kyung-Nam;Ahn, Koang-Hyun;Lee, Seong-No;Kang, Mi-Suk;Gyun, Im-Jung
    • Journal of Acupuncture Research
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    • v.19 no.3
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    • pp.107-114
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    • 2002
  • Objective : This study was designed to find the most effective and safest way to overcome Lumbago due to blood stasis and sprain involved in a few Meridian Tendino-musculatures by evaluating the effect of two kinds of Dong-gi(Dong-qi) Acupuncture(DGA) and by reporting their side effects. Material : 97 patients of out and admission patients were selected, who were diagnosed with lumbar sprain caused by repetitive bending, heavy weight lifting, unsuitable posture, concussion and falling down and whose Lumbago due to blood stasis and sprain in the concept of oriental medicine. Methods : 97 patients were divided into three groups. One is exclusive DGA group to which DGA and the method retaining needles on the acupoints for about 20 minutes were applied, the other is DGA combined active exercise group in which patients stretched their Meridian Tendino-muscuIatures with their hips moving up and downward repeatedly during DGA, the third is DGA combined passive exercise group in which patients were made to flex or extend their bodies on the auto flexion-distraction table in a prone position, from 10 to 20 degree, during DGA. In each group, bed rest, physical therapy and herbal medicine were used according to symptoms, in addition to DGA. In DGA method, "Su(Shu)" points of the meridian related to the involved Meridian Tendino-musculature were mainly chosen, that is, Sokkol(Shugu, B65), Hugye(Houxi, SI3), ChungJo(Zhongzhu, TE3) were used, for most LBP belonged to Bladder and Gallbladder Meridian Tendino-musculature disorders. Pyong-Bo-Pyong-Sa(Ping-Bu-Ping-Xie) such as Dong-Gi and Yeom-Jeon(Nian-Zhuan) was applied as Bo-Sa method. For evaluation of effectiveness, new score system was devised by severity of pain and range of movement. the score was given twice at patients' first and last visit and the difference between first and last score was regarded as a evaluation scale, the effectiveness was classified into four grade by evaluation scale.(scale : 12-15; excellent, 8-11; good, 4-7; fair, 0-3; bad) Results : 1. Exclusive DGA, DGA combined active exercise and DGA combined passive exercise group showed 97, 87 and 89% in effectiveness. 2. Exclusive DGA, DGA combined active exercise and DGA combined passive exercise group showed no aggravation of pain, range of movement. 3. In blood test of 34 patients, only one patient showed abnormal rise of sGOT, sGPT and $\gamma$-GTP at his first visit and the others didn't show any detrimental change. DGA had no bad influence upon BUN and creatinine of patients. Conclusion : For complex theraphy combining DGA, exercise, physical therapy and Herbal medicine proved to be highly effective on treating lumbago due to blood stasis and sprain, this is expected to be available for clinical use.

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Literatual Study on Etiological Analysis, Pathogenesis and Acupuncture Treatment of Edema (수종(水腫)의 병인병기(病因病機) 및 침구치료(鍼灸治療)에 대한 문헌적(文獻的) 고찰(考察))

  • Oh, Chang-rok;Na, Gun-ho;Choi, Bong-gyun;Yoon, Jung-sun;Lyu, Chung-yeol;Cho, Myung-rae
    • Journal of Acupuncture Research
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    • v.22 no.3
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    • pp.253-270
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    • 2005
  • Objective : The purpose of this study is to establish a category for acupuncture therapy by appropriate etiological analysis and differenciation of edema. Methods : We arrange Huang Di Nei Jing and thirty four kinds of literature about edema. Results : 1. The cause of Edema is functional disorder of lung, spleen, kidney, bladder and tri-energizer by six kinds of natural factors, internal injury and loss of nutritions. 2. Edema compartmentalize into the water of five zang organs, several kinds of edema(e,g. 5, 10, 12, 24) and yang & yin edema. 3. An ultimate cause of edema pathogenesis is the disturbance of Qi function in kidney. 4. In view of the results so far achived,'GV26(水淸)' is a vitally important acupoint in acupuncture treatment of edema.'GV26(水淸)' and 'CV9(水分)' are very useful acupoints in moxibustion. 5. In the acupuncture and moxibustion treatment of yang edema, we can use acupoints as like 'GV26(水溝)', 'S36(足三里)', 'B20(脾兪)' and 'SP9(陰陵泉)' by purgation and reduction for expelling wind, reducing fever and eliminating dampness. In an instance of yin edema, we can use acupoints as like 'CV9(水分)' 'S36(足三里)', 'CV6(氣海)', 'B20(脾兪)', 'B23(腎兪)' and 'K3(太谿)' by reinforcement for tonifying spleen yang-middle energizer-, qi-transmission and water promoting.

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A study on Palpation of the back-shu points (배유혈(背兪穴) 안진(按診)에 관(關)한 고찰(考察))

  • Hong, Mun-Yeup;Park, Won-Hwan
    • The Journal of Dong Guk Oriental Medicine
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    • v.8 no.2
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    • pp.155-173
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    • 2000
  • The diagnosis in Oriental medicine is done by inspection, auscultation and olfaction, interrogation, four diagnostics of pulse feeling and palpation, and various system of identification like identification according to Qi(vital energy), Xue and body fluids, identification according to fair principles, identification according to principles of Wei, Qi, Ying and Xue, identification according to Sanjiao(the triple heater), identification according to four type physical constitution. Sometimes, symptoms and diagnosis techniques according to symptoms is selectively applied for the diagnosis. Among them the pulse feeling and palpation diagnosis technique using the sense of finger and palm of the hand is divided into feeling of pulse and palpation and pressing maneuver. Pressing maneuver is a diagnosis technique pressing and rubbing the affected part in order to attain data of identification including inside and outside condition of the body with regard to the nature, condition and relative seriousness of disease. There are palpation of the skin, palpation the hand and foot, palpation the chest and the abdomen, palpation shu points in pressing maneuver. The diagnosis of the Back Shu points is a technique to examine the change of disease condition from pressure ache, spontaneous ache, tension, relaxation, solidification revealed through channels and collaterals. I investigates starting disease and an attack of disease of twelve pulse and pulse condition through the study relative to the substance and technique of pressing maneuver, and adjusts diagnosis techniques of a region for acupuncture and matters to be attended. The conclusions are as follows. 1. The Shu or stream points in which pathogenic factors go are important to medical treatment of dormant diseases like bowels disease, cold symptom complex and insufficiency symptom complex. 2. Disease classified by system is diagnosed by the condition of process part like pro-trusion, cave-in, tension, relaxation, pressure ache through palpating the Shu or stream points, that is pressing upward or downward left and right sides of the backbone process by hands. 3. In real clinic pressing maneuver of one's back side is very important to patient's diagnosis treatment. Thus, pressing maneuver of one's back side have to be done without omission. 4. Diagnosis must be accomplished through the perception about the diversity of diagnosis technique of bowels disease, the exact knowledge about pressing maneuver of one's back side for enlargement of treatment range and rising of treatment rate, and pressing maneuver of the Shu or the stream points.

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