• Title/Summary/Keyword: Disappearance

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Inactivation of Castor Bean Allergen CB-1A by Heating and Chemical Treatment

  • Kim, Byong-Ki
    • Food Science and Biotechnology
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    • v.15 no.3
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    • pp.441-446
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    • 2006
  • The biological effects of heating and chemical treatment on castor meal were investigated in order to develop a procedure to inactivate its antigenic activity in a way that is suitable for industrial applications. A 1% solution of purified castor bean allergen (CB-1A) was heat-treated with or without exposure to NaOH and NaOCI (250 ppm each). CB-1A exhibited extreme stability when heat-treated alone. In the presence of NaOH and NaOCl, CB-1A showed a drastic decrease in antigenic activity as the temperature surpassed the critical level of $70^{\circ}C$. The gradual disappearance of disc gel electrophoresis bands presumably responsible for the allergenicity of CB-1A, along with the significant losses of the amino acids phenylalanine, methionine, arginine, histidine, and cysteine correlated with the loss of CB-1A activity. CB-1A showed a single symmetrical band in SDS acrylamide gel electrophoresis with an estimated molecular weight of 6,000 daltons. The chemical and heat treatments reduced the disulfide bond content of CB-1A by 9.1% with a coincident increase in sulfhydryl bonds.

Endovascular Closure Resolves Trimethylaminuria Caused by Congenital Portosystemic Shunts

  • Ponce-Dorrego, Mar?a Dolores;Garzon-Moll, Gonzalo
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • v.22 no.6
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    • pp.588-593
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    • 2019
  • This study aimed to report three new cases of an association between two rare conditions, congenital portosystemic shunts (CPSS) and trimethylaminuria (TMAU), and the efficacy of endovascular closure of the CPSS for resolving TMAU. Between November 2014 and April 2017, 15 patients with CPSS were enrolled in this prospective study to assess the efficacy of percutaneous endovascular shunt closure. Three patients presented with clinical symptoms of TMAU that were confirmed by urine analysis of trimethylamine (TMA) and TMA n-oxide. One year after endovascular closure of the congenital portosystemic shunt, the same parameters were evaluated were obtained and the values were compared to the pretreatment values. The results indicated the disappearance of clinical symptoms of TMAU and normalization of the urine test parameters in two patients and no changes in one patient, who developed new portosystemic communications.

A clinical Study on 2 Cases of Hemorrhagic Corpus Luteal Cyst (출혈성 황체 낭종 치험례)

  • Park, Kyung-Mi
    • The Journal of Korean Obstetrics and Gynecology
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    • v.27 no.4
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    • pp.121-132
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    • 2014
  • Objectives: The purpose of this study is to report the effects of herbal medicine on corpus luteum and luteal hemorrhage. Ovulation is a physical event and hemorrhage from corpus luteum is known to occur in reproductive age group women. Life threatening hemorrhage requires surgical intervention and blood transfusion. Methods: The patients of this study are 34-year-old and 16-year-old females. They were diagnosed as the hemorrhagic corpus luteal cyst. Two patients was advised to be operated beacause of rupture possibility. They were treated by traditional Korean Medicine, herbal medicine (Bokryungdosu-tang), acupuncture and moxibustion. Results: After the treatment, the patients recovered their condition. One patient was diagnosed with disappearance of existing corpus luteum, the other was relieved of heavy abdominal pain, vaginal discharge and lumbago. Conclusions: Thess cases show that traditional Korean treatment might be effective on corpus luteum and luteal hemorrhage.

Effect of Light on Development of Microbody Functions in the Cotyledons of Rape (Brassica napus L.) Seedlings (유채 종자의 Microbody 기능 발달에 미치는 빛의 영향)

  • 피문자
    • Journal of Plant Biology
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    • v.25 no.2
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    • pp.73-81
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    • 1982
  • The changes in activities of glyoxysomal and peroxisomal enzymes during the transition from fat degradation to photosynthesis were investigated with the cotyledns of rape (Brassica napus L.) seedlings. The development and disappearance of glyoxysomal enzyme (isocitrate lyase, EC 4.1.3.1; malate dehydrogenase, EC 1.1.1.37; catalase, EC 1.11.1.6) activities took place independently of light. It is concluded that the mobilization of storage fat is independent of photomorphogenesis. During early periods of development in the dark of light (days 1 through 3), the glyoxysomal enzyme activities were relatively high and the enzyme activities rose to a peak at 3rd day after sowing. Thereafter, the activities decreased gradually. While glyoxysomal enzyme activities were dropping, the peroxisomal enzyme (glycolate oxidase, EC 1.1.3.1) activities were increasing rapidly during the transition period in the light. Moreover, the changes of enzyme activities of the common microbody marker, catalase, indicated both functional patterns. The enzyme patterns in rape cotyledons indicate that the glyoxysomal function of microbodies is replaced by the peroxisomal function of these organelles during the transition from fat degradation to photosynthesis.

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Application and evaluation of machine-learning model for fire accelerant classification from GC-MS data of fire residue

  • Park, Chihyun;Park, Wooyong;Jeon, Sookyung;Lee, Sumin;Lee, Joon-Bae
    • Analytical Science and Technology
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    • v.34 no.5
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    • pp.231-239
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    • 2021
  • Detection of fire accelerants from fire residues is critical to determine whether the case was arson or accidental fire. However, to develop a standardized model for determining the presence or absence of fire accelerants was not easy because of high temperature which cause disappearance or combustion of components of fire accelerants. In this study, logistic regression, random forest, and support vector machine models were trained and evaluated from a total of 728 GC-MS analysis data obtained from actual fire residues. Mean classification accuracies of the three models were 63 %, 81 %, and 84 %, respectively, and in particular, mean AU-PR values of the three models were evaluated as 0.68, 0.86, and 0.86, respectively, showing fine performances of random forest and support vector machine models.

Residual Learning Based CNN for Gesture Recognition in Robot Interaction

  • Han, Hua
    • Journal of Information Processing Systems
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    • v.17 no.2
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    • pp.385-398
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    • 2021
  • The complexity of deep learning models affects the real-time performance of gesture recognition, thereby limiting the application of gesture recognition algorithms in actual scenarios. Hence, a residual learning neural network based on a deep convolutional neural network is proposed. First, small convolution kernels are used to extract the local details of gesture images. Subsequently, a shallow residual structure is built to share weights, thereby avoiding gradient disappearance or gradient explosion as the network layer deepens; consequently, the difficulty of model optimisation is simplified. Additional convolutional neural networks are used to accelerate the refinement of deep abstract features based on the spatial importance of the gesture feature distribution. Finally, a fully connected cascade softmax classifier is used to complete the gesture recognition. Compared with the dense connection multiplexing feature information network, the proposed algorithm is optimised in feature multiplexing to avoid performance fluctuations caused by feature redundancy. Experimental results from the ISOGD gesture dataset and Gesture dataset prove that the proposed algorithm affords a fast convergence speed and high accuracy.

Estimation of People Tracking by Kalman Filter based Observations from Laser Range Sensor (레이저스케너 센서기반의 칼만필터 관측을 이용한 사람이동예측)

  • Jin, Taeseok
    • Journal of the Korean Society of Industry Convergence
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    • v.22 no.3
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    • pp.265-272
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    • 2019
  • For tracking a varying number of people using laser range finder, it is important to deal with appearance/disappearance of people due to various causes including occlusions. We propose a method for tracking people with automatic initialization by integrating observations from laser range finder. In our method, the problem of estimating 2D positions and orientations of multiple people's walking direction is formulated based on a mixture kalman filter. Proposal distributions of a kalman filter are constructed by using a mixture model that incorporates information from a laser range scanner. Our experimental results demonstrate the effectiveness and robustness of our method.

Transistor Characteristics by the Effect of Leakage Current Cutoff of Schottky Contact (누설전류차단 쇼키접합 트랜지스터 전달특성)

  • Oh, Teresa
    • Journal of the Semiconductor & Display Technology
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    • v.17 no.2
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    • pp.32-35
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    • 2018
  • The current voltage characteristics of ZTO/SiOC were researched, and the conductivities of the ZTO films as a channel material were analyzed. The current of SiOC was abruptly decreased near 0V, and then the depletion layer was formed by the disappearance of charges in the region form -12V to +12V. SiOC with Schottky contacts near ${\sim}10^{-9}$ A had the cutoff effect of leakage currents. The conductivity of ZTOs prepared on SiOC was improved in the cutoff region of the leakage current of -12V

iDENTIfyme Informative Campaign: Raising Forensic Dental Identification Awareness in the Community

  • Nuzzolese, Emilio
    • Journal of Preventive Medicine and Public Health
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    • v.54 no.3
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    • pp.218-219
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    • 2021
  • The identification of human remains can be performed visually through families and next-of-kin, but it is not advisable to rely only on visual recognition; instead, it is preferable to conduct a forensic comparison of antemortem and postmortem data for primary identifiers (fingerprints, DNA, and dental data). A dental autopsy is particularly valuable in the identification process of skeletonized, carbonized, saponified, and fragmented human remains. The principal challenge in the identification process is the search and collection of antemortem data. To this end, all dental information held on a missing person can represent a precious source of individualizing information that families should share with the police or investigating agencies after reporting a disappearance.

A Study on the Effects of Process Parameters on Dynamic Behavior Changes of Turning System (선반에서 공정변수가 가공물의 동적 거동 변화에 미치는 영향에 관한 연구)

  • Kim, Kiho;Oh, Chaeyoun
    • Journal of the Korean Society for Precision Engineering
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    • v.14 no.8
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    • pp.21-28
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    • 1997
  • This paper presents the influence of the process parameters on the change in dynamic behavior of a lathe turning system. With variation of feed rate, depth of cut, direction of tool motion, cutting speed and tool location along the workpiece, the dynamic characteristics of stable cutting, chatter transition and fully developed chatter regions are demonstrated. The workpiece vibration during machining is continuously measured at different tool locations along the workpiece and quantitatively analyzed. Complex linear behavior due to change of process parameter values as well as fundamental wystem nonlinearity due to change of process configuration indicated by a tool path dependence of the locations of chatter onset and disappearance are described. Finally, the structural characteristics of the turning system which can have large and nonlinear effects on system behavior are presented.

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