• Title/Summary/Keyword: High Temperature Injury

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Observation of External Injury and Morphological Movement for Analysis of Recovery Possibility after Storage of the Juvenile Sea Cucumber, Apostichopus japonicus (돌기해삼(Apostichopus japonicus)의 보관 후 회복 가능성 파악을 위한 외상 및 형태학적 변화의 관찰)

  • KIM, Tae-Ik;SON, Maeng-Hyun;CHO, Jae-Kwon;JIN, Young-Guk
    • Journal of Fisheries and Marine Sciences Education
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    • v.28 no.4
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    • pp.1006-1013
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    • 2016
  • The observed external injury, movement and survival rate according to storage and recovery of the juvenile sea cucumber, Apostichopus japonicus(wet weight $1.0{\pm}0.2g$). The investigated application possibility of external injury(grade I~IV) and movement variation(buccal tentacle, motion, obversion, movement) for estimate of survival rate. The survival rate was observed through the recovery after storage of the sea cucumber in various water temperature(10, 15, 20, $25^{\circ}C$) and hours(3, 6, 12, 24 hour). Grade of external injury lower in the 24 hour experiment group of $20^{\circ}C$ water temperature and 12 hour experiment group of $25^{\circ}C$ water temperature. Buccal tentacle and movement strong related survival rate and external injury. In the case of $20^{\circ}C$ water temperature, survival rate was observed decrease 24 hours experiment. $25^{\circ}C$ water temperature was high to 6 hours but 12 hours experiment group observed decrease of the survival rate. The lethal time(LT10) of the juvenile sea cucumber was 15.73 hours($20^{\circ}C$) and 5.57 hours($25^{\circ}C$). The results of this study provided various measurement method of survival rate according to transportation of the juvenile sea cucumber for release.

Effect of Several Treatments on Chilling Injury of Paprika Fruits during Low Temperature Storage (몇 가지 처리가 파프리카 과실의 저온장해에 미치는 영향)

  • Choi, In-Lee;Lee, Yong Beom;Kim, Il Seop;Baek, Jun Pill;Kang, Ho-Min
    • Journal of Bio-Environment Control
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    • v.22 no.4
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    • pp.427-431
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    • 2013
  • Paprika fruits should be stored and distributed at above $7^{\circ}C$ to prevent chilling injury but the small amount of paprika that transports with other horticultural products in refrigerated container by ship usually stored less than $5^{\circ}C$ for other products. In this case, paprika fruits cannot help exposing chilling temperature, so that the paprika must be lost marketable value during a long period of transfer. This study was conducted to compare the alleviated effects of high $CO_2$ treatment (passive MAP), heat (hot water dipping), and UVc treatment on chilling injury of paprika fruits due to low temperature storage, and also to decide if these treatments can be used for transporting under $5^{\circ}C$. After each treatment the paprika were put in the low temperature storage ($4^{\circ}C$) for 20 days and afterwards change the in room temperature ($20^{\circ}C$) for 5 days. The fresh weight loss of all the treatments except the high $CO_2$ treatment showed around 7~12% after 25 days of storage and the ethylene concentration showed periodical increases and decreases as around 3 ${\mu}l/l$. The $CO_2$ concentration was rapidly increased 33% carbon dioxide in high $CO_2$ treatment during room temperature storage after cold storage for 20 days. The firmness which is key quality characteristics during storage and is decreasing caused by chilling injury was not significantly different among all treatments. However, the firmness of stored paprika was maintained highest in the treated with hot water dipping. Therefore, HWD and UVc treatment that showed 60% of electrolyte leakage in the $4^{\circ}C$ control (chilling injury control) and similar level with the $7^{\circ}C$ control (non-chilling injury control) would be effective to alleviate chilling injury in the stored paprika.

Packages of Persimmons Exported from Korea to USA and Temperature Conditions during Sea Transport (미국 수출 단감 포장의 현황 및 수송 중 컨테이너 온도관리 실태)

  • Ahn, Gwang-Hwan;Lee, Dong-Sun
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.15 no.1
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    • pp.17-23
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    • 2009
  • Current status on consumption and packaging of sweet persimmons in USA was surveyed by visiting the market, and three sea shipments were conducted as model export trial from Korean to USA with measurement in ship container temperature and fruit quality. Strategy to promote the export of Korean persimmons was derived. There have been gradual decrease in the price of persimmons due to their increases production, but there seems potential growth in consumption of the fruits from Asian, Hispanic and American people. Compared to the fruits from other countries, Korean persimmons are desired to have higher soluble solid content with stronger red color, but too large sizes are not favored in American market. There has often been temperature fluctuation in shipment container during the sea transport to USA, resulting in surface blackening, skin black spotting and flesh softening. Plastic bag packages with inappropriate unitizing crimping were found to sometimes build up unproper modified atmosphere (high $O_2$ and low $CO_2$) giving high rate of physiological injury.

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The Correlation between Uneven Ripening and Respiration Rate of Tomato at Breaker Stages (Breaker 단계 토마토의 착색불량과 호흡률간 상관관계)

  • Kang, Ho-Min;Kim, Young-Shik
    • Journal of Bio-Environment Control
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    • v.19 no.2
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    • pp.93-96
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    • 2010
  • Breaker stage tomato fruits that were stored at low temperatures show typical chilling symptoms such as uneven ripening and a high respiration. Experiments were performed to assess and compare these chilling injury symptoms of breaker stage tomato fruits, and to gather basic data that can be used to decide whether horticultural crops receive chilling injuries. Tomato fruits that had been sorted in the breaker stage were stored at $2^{\circ}C$ for 0, 3, 6, and 9 days, and then their respiration rates were measured at 3, 6, 9, 12, 24, 36, and 48 h after moving them to room temperature. This treatment was repeated twice on the same procedures, except the storage periods, which were changed to 0, 1, 2, 3, and 10 days. The respiration rate was increased in a 1 day storage treatment, and the increasing rate rose higher with extended storage periods. The $a^*$ value, which represents the surface color of tomato fruits, was measured 10 days after moving to them into room temperature. Those with an increased $a^*$ value rate got dull and showed uneven coloring after 2 days' storage treatment. These two factors, the respiration rate and $a^*$ value of the surface, showed a high correlation (r = 0.9716, p < 0.001). Therefore, the chilling injury of breaker stage tomato fruits can be diagnosed by measuring the respiration rate after moving them into room temperature, and the degree of chilling injury can also be assessed in terms of the respiration increase rate.

Study on the Quality Development of Flax Fiber Yarns(I) ―Effects on the Scouring Methods― (아마섬유 방적사의 품질고급화에 대한 연구(I) -정련방법에 대한 영향-)

  • Jeon, Han Yong;Lee, Young Mi;Choi, Chang Nam;Yoo, Dong Il;Lee, Chang Heon;Kook, Yoon Hwan
    • Textile Coloration and Finishing
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    • v.8 no.1
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    • pp.64-72
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    • 1996
  • To develop a scouring method for the high-grade quality and the high value added of flax for spinning, it was measured and analyzed weight loss and degree of injury with change of scouring concentration, time, temperature and pH. We got the f ollowing results; Firstly, in case that flax was scoured at a fixed condition, the weight loss and degree of injury of scoured flax under the no-cutting condition were lower than that of scoured flax under the cutting condition. Secondly, when flax was scoured with $Na_{2}CO_{3}$, it was obtained that the higher weight loss and degree of injury and weight loss with the increase of scouring time and condition. The degree of injury was lower than any other under the treatment condition of 4% $Na_{2}CO_{3}$concentraion for 2 hours. Finally, when alkaline scoured flax was rescoured by pectinase, enzyme activation effect was the most active under the treatment condition of pH 4 for 2 hours. The scouring effect was better than that of alkaline scouring only.

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Response of Rice Varieties to Various Herbicides -(I) Effect of Varying Water Depth and Temperature on Herbicidal Action- (제초제에 대한 수도품종간반응 -(I) 수심 및 온도처리가 제초제의 작용에 미치는 영향-)

  • K. U. Kiml;Su-Bong Ahn
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.20
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    • pp.148-151
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    • 1975
  • Response of rice varieties Tongil, Jinheung and IR 24 to four preemergence herbicides was determined. Saturn-s [s-(4-chlorobenzyl)-N, N-diethylthiol carbamate plus 2-methylthiol-4, 6-bisethylamino-2-triazine] caused severe injury to Tongil at the high temperature and less at the higher water level, but slight injury to Jinheung and IR 24. The difference may be explained by the shallower root system of Tongil, allowing more contact with the herbicide, or different varietal metabolic rates.

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Effect of Frost Injury in Harvest Season and Temperature Condition of Orchard on Storage Characteristics of Persimmon (Diospyros kaki 'Fuyu') Fruit (단감 '부유' 과실의 저장특성에 미치는 수확기 동상해 및 과수원 온도조건의 영향)

  • Kwack, Y.B.;Kim, S.H.;Ahn, K.H.;Lee, C.H.;Kang, S.K.
    • Journal of Practical Agriculture & Fisheries Research
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    • v.23 no.1
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    • pp.67-80
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    • 2021
  • We analyzed the effect of planting site (elevation: high, middle, low) and temperature condition of orchard on the frost injury occurrence and storage characteristics of persimmon (Diospyros kaki cv. 'Fuyu) fruits under an early fall frost at two orchards, Changwon (A) and Changnyeong (B), Gyeongsangnam-do Korea. Also, the fruits picked at Nov. 5 and Nov. 20 were MA stored to investigate the quality and chilling injury of fruits. On 2-way factor analysis, both planting elevation and orchard factor had not a significant effect on fruit characteristics (weight, firmness, soluble solid), while planting elevation factor did on the skin color (hunter 'a')(p<0.05). A fruit skin coloration at orchard A was faster than that at orchard B. At low elevation of orchard B, 2% fruits were frost injured at harvest season. On LDPE film MA storage with the fruits harvested at Nov. 5 and Nov. 20, the fruits at orchard A had higher fruit firmness than those of orchard B during storage. In addition, the 73% (orchard A) and 85%(orchard B) fruits harvested at Nov. 5 showed no chilling injury 80 days after storage. However, At harvest of Nov, 20 (after incidence of frost), only the 14% fruits of orchard B had no the chilling disorder 80 days after storage, even though 76% fruits at orchard A did.

Part 4. Clinical Practice Guideline for Surveillance and Imaging Studies of Trauma Patients in the Trauma Bay from the Korean Society of Traumatology

  • Chang, Sung Wook;Choi, Kang Kook;Kim, O Hyun;Kim, Maru;Lee, Gil Jae
    • Journal of Trauma and Injury
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    • v.33 no.4
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    • pp.207-218
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    • 2020
  • The following recommendations are presented herein: All trauma patients admitted to the resuscitation room should be constantly (or periodically) monitored for parameters such as blood pressure, heart rate, respiratory rate, oxygen saturation, body temperature, electrocardiography, Glasgow Coma Scale, and pupil reflex (1C). Chest AP and pelvic AP should be performed as the standard initial trauma series for severe trauma patients (1B). In patients with severe hemodynamically unstable trauma, it is recommended to perform extended focused assessment with sonography for trauma (eFAST) as an initial examination (1B). In hemodynamically stable trauma patients, eFAST can be considered as the initial examination (2B). For the diagnosis of suspected head trauma patients, brain computed tomography (CT) should be performed as an initial examination (1B). Cervical spine CT should be performed as an initial imaging test for patients with suspected cervical spine injury (1C). It is not necessary to perform chest CT as an initial examination in all patients with suspected chest injury, but in cases of suspected vascular injury in patients with thoracic or high-energy damage due to the mechanism of injury, chest CT can be considered for patients in a hemodynamically stable condition (2B). CT of the abdomen is recommended for patients suspected of abdominal trauma with stable vital signs (1B). CT of the abdomen should be considered for suspected pelvic trauma patients with stable vital signs (2B). Whole-body CT can be considered in patients with suspicion of severe trauma with stable vital signs (2B). Magnetic resonance imaging can be considered in hemodynamically stable trauma patients with suspected spinal cord injuries (2B).

Characteristics of Traffic Accidents on Highways: An Analysis Based on Patients Treated at a Regional Trauma Center

  • Lee, Sung Yong;Sun, Kyung Hoon;Park, Chan Yong;Kim, Tae Hoon
    • Journal of Trauma and Injury
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    • v.34 no.4
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    • pp.263-269
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    • 2021
  • Purpose: There have been increasing concerns about serious traffic accidents on highways. The purpose of this study was to analyze factors affecting traffic accidents on highways and the severity of the resulting injuries. Methods: This retrospective study was conducted at a regional trauma center. We reviewed 594 patients who had been in 114 traffic accidents on highways from January 2018 to June 2020. We collected demographic data, clinical data, accident-related factors, and meteorological data (weather and temperature). Results: Environmental risk factors were found to be significantly associated with the incidence of traffic accidents on highways. Injury severity and the death rate were higher in sedans than in any other type of vehicle. Tunnels were the most common location of accidents, accounting for 47 accidents (41.2%) and 269 injured patients (45.3%). The injury severity of individuals riding in the driver's seat (front seat) was high, regardless of vehicle type. Three meteorological risk factors were found to be significantly associated with traffic accidents: rainy roads (odds ratio [OR] 2.08; 95% confidence interval [CI] 1.84-3.29; p=0.01), icy or snowy roads (OR 5.12; 95% CI 2.88-7.33; p<0.01), and foggy conditions (OR 2.94; 95% CI 2.15-4.03; p<0.05). Conclusions: The injury severity of patients was affected by seat position and type of vehicle, and the frequency of accident was affected by the location. The incidence of traffic accidents was strongly influenced by meteorological conditions (rain, snow/ice, and fog).