• 현장농수산연구지
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• 제14권1호
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• pp.107-115
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• 2012

치패 크기별 실험에서는 5mm치패의 여수율과 먹이섭취률은 각각 4.1 mL/h, 246×10⁴세포/h였으며, 15mm치패의 경우는 각각 70.8 mL/h, 4245.0×10⁴세포/h로서 치패 크기가 클수록 증가하였다. 회분외 건중량(AFDW)당 여수율 및 먹이섭취률은 7.5mm 치패에서 각각 3.3 mL/mg AFDW/h, 196.0×10⁴세포/mg AFDW/h로서 가장 높았다. 수온별 실험에서 10℃에서 여수율과 먹이섭취률은 각각 0.3×10⁴세포/h였고, 25℃에서는 각각 16.6 mL/h, 993.4×10⁴세포/h로서 25℃까지는 온도가 높을수록 여수율과 먹이섭취률이 증가하였으나, 30℃에서는 각각 12.9 mL/h, 772.6±298.6×10⁴세포/h로서 25℃보다 낮았다. 먹이생물 농도에 따라서는 여수율은 30×10⁴세포/mL일때는 21.1 mL/h였고, 농도가 240×10⁴세포/mL일 때는 2.3 mL/h로서 농도가 낮을수록 증가하였다. 먹이섭취률은 먹이생물의 농도가 60×10⁴세포/m일때 876.2×10⁴세포/h로서 최대값을 나타내었다.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제18권3호
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• pp.428-434
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• 1996

The practice of oral surgery or other dentistry possesses the danger of causing the loss of foreign bodies used within the oral cavity. If such foreign bodies would be lost, they could enter the viscera through the esophagus or tracheobroncheal tree. Ingestion is four times as frequent as aspiration and 80% to 90% of ingested foreign bodies will pass through the body spontaneously. Once the aspiration or ingestion of foreign bodies is happened, a dental procedure should be discontinued immediately. If symptoms of respiratory distress, including coughing, wheezing, or stridor, are present, a patent airway should be maintained, oxygen administered, and ventilation supported if necessary. The PA chest radiograph will identify the objects in the lung, esophagus, or stomach. Ingested gastrointestinal foreign bodies may be managed by observation, endoscopy, and or surgical intervention and aspirated tracheobroncheal foreign bodies may be managed by bronchoscopy, and or surgical intervention. This case report describes the management of ingested or aspirated foreign bodies happened to the three patients during intraoral treatment. we recommend that the preventive method of ingestion or aspiration of the dental foreign bodies should be performed prior to intraoral treatment and the immedieate measures should be carried out after ingestion or asipiration of it.

• 대한소아치과학회지
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• 제42권1호
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• pp.69-74
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• 2015

예방하려는 노력에도 불구하고, 치과진료 중 이물질을 삼키는 일이 발생한다. 주의 깊은 임상적 검사와 적절한 방사선학적 평가, 시의적절한 응급 치료가 심각한 결과를 예방할 수 있다. 본 증례에서는 환자가 이물질을 삼킨 케이스를 보고하고, 소아치과 영역에서 치과 기구의 섭취와 흡인의 예방과 관리에 대해 기술하고자 한다.

• 한국양식학회지
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• 제15권2호
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• pp.79-86
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• 2002

This study is the first attempt to understand the feeding physiology of a sea-urchin larva on a red-tide dinoflagellate. Fifteen day old larvae of S. intermedius capture C. polykrikoides cells by localized reversal of ciliary beats. No failure to transporte the algal cells from theciliated band to mouth and no rejection at the mouth suggest that C. polykrikoides has no feeding deterrence to S. intermedius larvae. The trend obtained for the clearance rate of S. intermedius larvae is similar to that of other sea urchin larvae. Thus, the clearance rate decreased as the algal concentration increased. Maximum clearance rate of S. intermedius on C. polykrikoides was 17.7 $\mu l$/larva/hr. Ingestion rate rapidly increased at lower algal concentrations and saturated at higher concentrations. There was no inhibition in ingestion rate at the highest prey concentration of ca. 3000 cells/ml. Maximum ingestion rate of S. intermedius on C. polykrikoides was 131 ngC/larva/d, which is higher than that reported for the larvae of the mussel Mytilus gal-lotrovincialis, but lower than that of the ciliate Strombidinopsis sp. The grazing rate, calculated by combining the field data on algal abundances with experimental data on ingestion rate, suggests that due to its low abundance, sea urchin Iarva has no significant grazing impact on C. polykrikoides population.

• Ocean and Polar Research
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• 제31권3호
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• pp.265-276
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• 2009

Acartia hongi is the most dominant and widespread planktonic copepod in Gyeonggi Bay, Yellow sea. Ingestion rates and selectivity of A. hongi on phytoplankton and planktonic ciliates were determined in the laboratory. Ingestion rates of A. hongi on planktonic ciliates and phytoplankton increased in proportion to prey concentration increase. When A. hongi was fed with various mixture combinations of planktonic ciliates and phytoplankton, their ingestion rate on ciliates tended to increase as the percentage of ciliates in prey biomass increased. Clearance rate of A. hongi on planktonic ciliates was higher than for phytoplankton in all experiments without regard to relative percent of ciliate biomass. This trend suggests that A. hongi was preferentially preying on planktonic ciliates. Under mixed prey availability, it is likely that selective feeding and higher clearance rate of planktonic ciliates by A. hongi is related to the higher nutritional value of ciliates compared to phytoplankton. Therefore, our results suggest that selective ciliate feeding by A. hongi will positively benefit its growth and abundance, and as a result negatively impact the population dynamics of planktonic ciliates in Gyeonggi Bay.

• 한국정밀공학회지
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• 제16권4호통권97호
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• pp.79-84
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• 1999

This paper focus on investigating the influence of the amount of water ingestion and the engine speed on the joint reaction force of the connecting rod in engine. The connecting rod was modelled by MSC/PATRAN, the modal informations of it were obtained by the DMAP module in the MSC/NASTRAN, and the dynamic force history was computed through the flexible multibody dynamic simulation in DADS. To analyze the joint reaction force acting on the connecting rod, the 48 cases were investigated. The engine speed varies with 200, 700, 1600, 2400rpm and the volumetric ratio of water to the combustion chamber varies with 0, 10, 20, ..., 90, 95 and 97.5% . As the engine speed decreases and the amount of water ingestion increases, the joint reaction force increase. Especially when the amount of water ingestion exceeds the 70% of the volume of the combution chamber, the joint reaction force acting on the connecting rod is over the design strength.

• 약학회지
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• 제40권5호
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• pp.563-573
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• 1996

The system most likely responsible for the accelerated metabolism of alcohol with chronic ingestion or at high blood ethanol levels, is the microsomal ethanol-oxidizing system(M EOS). While the increase in the MEOS with chronic ethanol ingestion is thought to be adaptive, it may also have serious adverse effects on the liver. The rates of the NADPH-dependent oxygen consumption by the liver microsomes from the prolonged ethanol fed rats were 2 times higher than the rates from the non-treated rats. With the alcohol ingestion, the total SH and nonprotein SH contents showed the significant decrease and at the same time, MDA in liver and GOT and GPT levels in blood showed the significant increase, which suggests the occurrence of liver damage due to the oxidative stress caused by chronic alcohol consumption. The mitochondrial aldehyde dehydrogenase(ALDH) activity was decreased by chronic ethanol ingestion, whereas the alcohol dehydrogenase activity and the cytosolic ALDH activity were not altered. These results suggest that the induction of cytochrome P450 by the chronic alcohol ingestion increases the oxidative stress which seems to result in the altered the physiological states of the liver including the ALDH activity, which may in turn to lead to the liver disease.

• 대한임상독성학회지
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• 제16권2호
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• pp.161-164
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• 2018

The ingestion of corrosive substances often leads to severe morbidity and mortality. Acids produce coagulation necrosis with a lesser degree of penetration, whereas alkalis produce liquefactive necrosis with penetration. Acetic acid is a clear, colorless organic acid with a pungent, vinegar-like odor. The ingestion of highly concentrated acetic acid (glacial acetic acid) may cause a range of complications. On the other hand, perforation of the stomach is extremely rare but it has a high mortality rate. This paper reports a case of perforation of the stomach after the ingestion of glacial acetic acid with suicidal intent in an otherwise healthy 76-year-old woman.

• 대한임상독성학회지
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• 제20권2호
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• pp.82-85
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• 2022

Traditionally, most cases of nicotine poisoning have been due to ingestion of nicotine pesticides. However, the increasing use of electronic cigarettes (e-cigarettes) has resulted in both intentional and unintentional exposure to concentrated liquid nicotine or "e-liquid" leading to an increase in nicotine poisoning cases. However, fatalities following the ingestion of the e-liquid are extremely rare. We report a rare case of cardiac arrest and severe encephalopathy following the intentional ingestion of e-liquid. We present the case of a 20-year-old woman who intentionally ingested liquid nicotine intended for e-cigarette use. She was found in asystole and experienced a return of spontaneous circulation (ROSC) after undergoing approximately 46 mins of cardiopulmonary resuscitation. Her plasma nicotine levels were >500 ng/ml. Despite aggressive supportive care, she was found to have encephalopathy consistent with severe anoxic brain injury on magnetic resonance imaging. In recent times, there have been some reports of deaths following liquid nicotine ingestion. Our case illustrates the potential for fatal nicotine toxicity from ingestion of e-cigarettes.

• 운동영양학회지
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• 제14권2호
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• pp.87-93
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• 2010

PURPOSE. The purpose of this study was to investigate the effect of red-pepper ingestion on excess post-exercise oxygen consumption in young women. METHODS. The six female college students involved in this experiment. The subjects participated in two trials, standard meal (650 kcal) and standard meal +10 g red-pepper with 200 ml water. After the subjects allowed to have rest for 60 min, exercised by resistance program for 40 minutes. RESULTS. The excess post-exercise oxygen consumption (EPOC) was not affected by the red-pepper ingestion. However, post-exercise fat oxidation and plasma free fatty acid levels were higher in red-pepper trial than in control trial. CONCLUSION. Therefore, red-pepper ingestion before resistance exercise might be improve body fat reduction.