• Title/Summary/Keyword: Poison

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Study of the Hypothesis of Kyung-Jong's poison (경종독살설 연구)

  • Kim, Dong-Ryul;Jung, Ji-Hun
    • The Journal of Korean Medical History
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    • v.27 no.1
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    • pp.15-31
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    • 2014
  • This study performed to examine the genuineness of Kyung-Jong's poison hypothesis which was the one of the biggest topic in the history of Joseon Dynasty. Kyung-Jong's poison hypothesis is that Kyung-Jong who was the 20th king of the Joseon Dysansty was poisoned by the next king Young-Jo who became the 21st king. This theory was hyphosized by Sim-Yoohyun and was widely known in the 4th year of Young-jo through the revolt. Kyung-Jong suffered with severe diarrhea for 5 days which finally took his life away right after he had have marinated raw crab and persimmon. Some insist the poison must had been in those foods. However, the symptoms that Kyung-jong had were not matched with the poisons which used in those days and also poison was not the reasonable way of murder, so it is hard to say there is little possibility of poison. On the other hand, considering of Kyung-jong's health, marinated raw crab and persimmon could result of severe diarrhea. In the mean time, the possibility of Young-Jo's intention of killing Kyung-Jong is very low. Rather, he blame the royal doctors who scout the outside doctors, because he believed that it led Kyung-jong's death since the treatment was chaotic with all those different doctors. Even after the Kyung-Jong's death, Young-jo was always strict to scout the outside doctors and missed Kyung-jong consistently. On this basis, it is hard to say that king Kyung-Jong was murdered by poisoning.

Yoshimasu Todo[吉益東洞]'s medical theory extracted from ${\ulcorner}$Yakjing(藥徵)${\lrcorner}$ II -Yoshimasu Todo's thoughts of medicines- ("약징(藥徵)"을 통해 본 길익동동(吉益東洞)의 의학사상 연구 II -길익동동의 약물관-)

  • Lee, Jeong-Hwan;Baik, You-Sang;Jeong, Chang-Hyun
    • Journal of Korean Medical classics
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    • v.19 no.1 s.32
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    • pp.128-136
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    • 2006
  • This study is on Yoshimasu Todo's thought of medicines. Conclusions are as below. Medicines are poisons. Therefore, they don't have the ability to restore the vital energy. Medicine-processing(法製) can only be done for doubling the toxicity, since the poison itself is the very effect of a medicine. One poison has an ability to treat only one main symptom. If the poison strikes the main symptom right, it doesn't harm the human body. Since warm-heat-cool-cold(溫熱凉寒) of a medicine can't be known by human ability, it can't be used as the standard of judgment when selecting a medicine.

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Novel homogeneous burnable poisons in pressurized water reactor ceramic fuel

  • Dodd, Brandon;Britt, Taylor;Lloyd, Cody;Shah, Manit;Goddard, Braden
    • Nuclear Engineering and Technology
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    • v.52 no.12
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    • pp.2874-2879
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    • 2020
  • Due to excess reactivity, fresh nuclear fuel often contains burnable poisons. This research looks at six different burnable poisons and their impacts on reactivity, material attractiveness, and waste management. An MCNP simulation of a PWR fuel pin was performed with a fuel burnup of 60 GWd/MTHM to determine when each burnable poison fuel type would decrease below a k of 1. For determining the plutonium material attractiveness in each burnable poison fuel type, the plutonium isotopic content of the used fuel was evaluated using Bathke's Figure of Merit formula. For the waste management analysis, the thermal output of each burnable poison fuel type was determined through ORIGEN decay simulations at 100 and 300 years after being discharged from the core. The performance of all six burnable poisons varied over the three criteria considered and no single burnable poison performed best in all three considerations.

Four Treatment Cases of Psoriasis of Soyangins Demonstrated by Yang Poison Exanthema (양독발반(陽毒發斑)으로 변증(辨證)한 소양인 건선 치험 4례)

  • Weon, Young-Ho
    • The Journal of Korean Medicine
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    • v.34 no.3
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    • pp.160-168
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    • 2013
  • Psoriasis is a chronic, recurrent skin disease without any cure so far. The symptoms of the guttate psoriasis of Soyangins going through tonsillitis and of the psoriasis under the steroid rebound phenomenon are identical to one of yang poison exanthema of a Soyangin. The study administered Yangdokbagho-tang, which is used to cure yang poison exanthema of Soyangins, and, as a result, showed significant treatment results from these two types of four clinical cases. Sasang medicine is considered an effective treatment method to cure psoriasis, an obstinate skin disease.

Implementation of Strength Pareto Evolutionary Algorithm II in the Multiobjective Burnable Poison Placement Optimization of KWU Pressurized Water Reactor

  • Gharari, Rahman;Poursalehi, Navid;Abbasi, Mohammadreza;Aghaie, Mahdi
    • Nuclear Engineering and Technology
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    • v.48 no.5
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    • pp.1126-1139
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    • 2016
  • In this research, for the first time, a new optimization method, i.e., strength Pareto evolutionary algorithm II (SPEA-II), is developed for the burnable poison placement (BPP) optimization of a nuclear reactor core. In the BPP problem, an optimized placement map of fuel assemblies with burnable poison is searched for a given core loading pattern according to defined objectives. In this work, SPEA-II coupled with a nodal expansion code is used for solving the BPP problem of Kraftwerk Union AG (KWU) pressurized water reactor. Our optimization goal for the BPP is to achieve a greater multiplication factor ($K_{eff}$) for gaining possible longer operation cycles along with more flattening of fuel assembly relative power distribution, considering a safety constraint on the radial power peaking factor. For appraising the proposed methodology, the basic approach, i.e., SPEA, is also developed in order to compare obtained results. In general, results reveal the acceptance performance and high strength of SPEA, particularly its new version, i.e., SPEA-II, in achieving a semioptimized loading pattern for the BPP optimization of KWU pressurized water reactor.

Nuclear Design Feasibility of the Soluble Boron Free PWR Core

  • Kim, Jong-Chae;Kim, Myung-Hyun;Lee, Un-Chul;Kim, Young-Jin
    • Nuclear Engineering and Technology
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    • v.30 no.4
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    • pp.342-352
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    • 1998
  • A nuclear design feasibility of soluble boron free(SBF core for the medium-sized(600MWe) PWR was investigated. The result conformed that soluble boron free operation could be performed by using current PWR proven technologies. Westinghouse advanced reactor, AP-600 was chosen as a design prototype. Design modification was applied for the assembly design with burnable poison and control rod absorber material. In order to control excess reactivity, large amount of gadolinia integral burnable poison rods were used and B4C was used as a control rod absorber material. For control of bottom shift axial power shape due to high temperature feedback in SBF core, axial zoning of burnable poison was applied to the fuel assemblies design. The combination of enrichment and rod number zoning for burnable poison could make an excess reactivity swing flat within around 1% and these also led effective control on axial power offset and peak pin power, The safety assessment of the designed core was peformed by the calculation of MTC, FTC and shutdown margin. MTC in designed SBF core was greater around 6 times than one of Ulchin unit 3&4. Utilization of enriched BIO(up to 50w1o) in B4C shutdown control rods provided enough shutdown margin as well as subcriticality at cold refueling condition.

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CO-CLUSTER HOMOTOPY QUEUING MODEL IN NONLINEAR ALGEBRAIC TOPOLOGICAL STRUCTURE FOR IMPROVING POISON DISTRIBUTION NETWORK COMMUNICATION

  • V. RAJESWARI;T. NITHIYA
    • Journal of applied mathematics & informatics
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    • v.41 no.4
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    • pp.861-868
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    • 2023
  • Nonlinear network creates complex homotopy structural communication in wireless network medium because of complex distribution approach. Due to this multicast topological connection structure, the queuing probability was non regular principles to create routing structures. To resolve this problem, we propose a Co-cluster homotopy queuing model (Co-CHQT) for Nonlinear Algebraic Topological Structure (NLTS-) for improving poison distribution network communication. Initially this collects the routing propagation based on Nonlinear Distance Theory (NLDT) to estimate the nearest neighbor network nodes undernon linear at x(a,b)→ax2+bx2 = c. Then Quillen Network Decomposition Theorem (QNDT) was applied to sustain the non-regular routing propagation to create cluster path. Each cluster be form with co variance structure based on Two unicast 2(n+1)-Z2(n+1)-Z network. Based on the poison distribution theory X(a,b) ≠ µ(C), at number of distribution routing strategies weights are estimated based on node response rate. Deriving shorte;'l/st path from behavioral of the node response, Hilbert -Krylov subspace clustering estimates the Cluster Head (CH) to the routing head. This solves the approximation routing strategy from the nonlinear communication depending on Max- equivalence theory (Max-T). This proposed system improves communication to construction topological cluster based on optimized level to produce better performance in distance theory, throughput latency in non-variation delay tolerant.

Geometrical shape and self-shielding effect of burnable poison particles on pin-in block type HTGR neutronic performance

  • Jamiyansuren Terbish;Odmaa Sambuu
    • Nuclear Engineering and Technology
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    • v.56 no.6
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    • pp.2388-2394
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    • 2024
  • In our previous works, two different spherical burnable poison particles (BPPs) as B4C and Gd2O3 in pin-in block type HTGR core had utilized to suppress the excess reactivity and to control long-term reactivity during the burnup period. In the present work, we performed the neutronic analysis of a prismatic HTGR operating at 850 ℃ with thermal power of 100 MW containing spherical and cylindrical BPPs and then studied the self-shielding effect of BPPs and shape effect. The calculations were performed when the surface area (1) or volume (2) of cylindrical BPPs equals to that of the spherical BPPs. The calculations showed that the neutronic parameters were slightly better for the second case than the first one, such as the excess reactivity of the reactor core at the beginning of the cycle were more suppressed, the core lifetime were more extended, and the fuel-burning were more efficiently. The neutron spectrum in each region of the cylindrical BBPs slightly differs than that of the spherical BPPs. Therefore, the self-shielding effect of BPPs on reactor core performance depends on the particle's geometrical shape.

A literature study on lacquer poison (옻에 대한 문헌적 고찰)

  • Lee, Kyoung-Min;Kwon, Ki-Rok;Choi, Sung-Mo;Kim, Tae-Hee
    • Journal of Pharmacopuncture
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    • v.5 no.1 s.8
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    • pp.159-169
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    • 2002
  • Objective: It will be examined in this research whether Lacquer poison can be used as an distinguished treatment to cure incurable diseases by considering literature existing and various papers. Method: I studies origin, alias, species, toxicity, effect, treatment, component, medical action and contraindication of Rhus vemiciflua stokes through various kinds literatures. Results: Sap of Rhus vemiciflua stokes that is used for medical purposes, has an effect on anti-tumor, anti-oxidation, hangover cure, and gastritis suppression. Even though urushiol and fIavonoids, the main ingredient of lacquer, has medical cure effects. but urushiol results in a dermatropic allergy. Sincc xylem of a Rhus vemiciflua stokes, however. does not induce the allergy but has medical efficacy, research on this topic is needed.