• Title/Summary/Keyword: Preservation condition

Search Result 527, Processing Time 0.046 seconds

Optimization of the Cold-air-drying Condition for a Steamed Pumpkin-Sweet Potato Slab (증절간 호박고구마의 냉풍건조조건 최적화)

  • Shin, Mi-Young;Lee, Won-Young
    • Food Science and Preservation
    • /
    • v.18 no.4
    • /
    • pp.488-496
    • /
    • 2011
  • Cold-air drying was conducted for a steamed pumpkin-sweet potato slab to improve its quality, convenience, and preference as a snack. A steamed pumpkin-sweet potato slab was dried from 10 to $25^{\circ}C$ for 48 h, and its moisture content, color, texture, and taste at different drying temperatures and drying times were evaluated. The lowest moisture content was 4.98%, at $25^{\circ}C$. The lightness decreased, but the other color values (a, b, and ${\Delta}E$) increased with the increasing drying temperature and drying time. The reducing sugar and soluble solid ranged from 98.7 to 194.75 mg/g and 19-70 $^{\circ}Brix$, respectively. The highest hardness of the steamed pumpkin-sweet potato slab was 23.88 $kg_f/cm^2$, and the springiness and cohesiveness were 91.15 and 98.36% when it was dried at $25^{\circ}C$ for 48 h. The sensory evaluation score was high at $10^{\circ}C$, 40 h and at $25^{\circ}C$, 24 h. The optimum drying condition was predicted at $19^{\circ}C$, 32 h via response surface methodology (RSM).

Effects of Different Carbon Dioxide and Oxygen Concentration on the Quality of Oriental Melon during CA Storage (참외 CA저장시 $CO_2$$O_2$농도에 따른 품질 변화)

  • 이숙희;김창배;서영진;김찬용;윤재탁
    • Food Science and Preservation
    • /
    • v.6 no.4
    • /
    • pp.386-391
    • /
    • 1999
  • Oriental melon was stored in controlled atmospheres(5, 10 or 15% CO$_2$in combination with 3 or 10% O$_2$) and air as control, and was analyzed half monthly during a 45-day storage for various quality Parameters. Oriental melon which stored in CA condition was lower in weight loss and decay rate than that stored in air. There was no significant difference in firmness by CO$_2$or O$_2$concentration during a month of storage. Fruits stored in 10% CO$_2$+3% O$_2$showed higher level of soluble solids, Vitamin C content and L value than other condition. And also comparatively lower endogenous ethanol accumulation and better state of quality was observed in that condition.

  • PDF

One-stage Hip Reconstruction for Developmental Hip Dysplasia in Children over 8 Years of Age

  • Qadir, Irfan;Ahmad, Saeed;Zaman, Atiq uz;Khan, Chirag Muhammad;Ahmad, Shahzad;Aziz, Amer
    • Hip & pelvis
    • /
    • v.30 no.4
    • /
    • pp.260-268
    • /
    • 2018
  • Purpose: This study was performed to assess the clinical and radiological outcomes following one-stage hip reconstruction, consisting of open reduction femoral shortening and pelvic osteotomy, for neglected developmental dislocation of the hip (DDH). Materials and Methods: This is a retrospective analysis of 77 hips in 65 patients (46 females and 19 males; 12 had bilateral dislocations), operated at a Ghurki Trust Teaching Hospital in Pakistan between 2013 and 2015. The average age at surgery was $11.02{\pm}3.43$ years. According to the Tonnis classification, there were 10, 14, 22, and 31 patients in grades 1, 2, 3, and 4, respectively. The pelvic procedure utilized in this study was triple osteotomy (47 hips) followed by double and Salter osteotomy (18 and 12 hips, respectively). Postoperative evaluations were conducted using the modified MacKay's scoring system (functional outcomes) and Severin's scoring method (radiological assessment). Results: Postoperatively, there were 38 (49.4%), 19 (24.7%), 14 (18.2%), and 6 (7.8%) hips in Severin grade I, II, III and IV, respectively. According to the modified McKay criteria, there were 22 hips (28.6%) in excellent condition, 44 (57.1%) in good condition, 9 (11.7%) in fair condition and 2 (2.6%) in poor condition. Both patients with poor outcomes had an unstable, painful hip with evidence of avascular necrosis of the femoral head. Conclusion: Based on the results presented here, we recommend the single stage procedure of open reduction, femoral shortening and pelvic osteotomy for treatment of DDH in older children with good to excellent functional and radiological outcomes.

A Study on the Improvement of Storage Environment in Museums -With Research on Actual State of Storage in Domestic Museums- (박물관 수장부문의 환경개선에 관한 연구 -국내 박물관 수장고 실태조사를 중심으로-)

  • 임채진;정성욱
    • Korean Institute of Interior Design Journal
    • /
    • no.25
    • /
    • pp.253-261
    • /
    • 2000
  • Except the time when the relics of the museum are exhibited or loaned to the public, they are stored in a storage. Therefore, the environmental condition of a storage is a important factor. But in Korea, the appearance of the building and exhibition design are emphasized more than any other factors in planing museums, so the preservation technology has not yet reached the appropriate level and leaded to some environmental problem in the museum storage. The purpose of this study is to suggest guideline for an apt storage system by reconsidering practical notes in planning storage and give a efficient long-term plans examinable category. So this study based on the research had been stated from the recognition that the relics should be planned and placed differently in sorts, and developed this by researching the theory related to the matter throughout documents and to cope with the low efficiency in its essential role compared to the massive investment and through on-the-spot surveys emphasizing on the storage of the domestic museums in progress since 1995. Hereafter it compares the actual condition and problems of the domestic museum planning with the ones abroad, and analyzes the characteristic and difference between the two, and then establish an organized storage system.

  • PDF

The investigation of conservation methods and destruction regions of papers under the various temperature and humidity changes (온.습도 변화에 따른 양지의 손상원인 및 보존방안 연구)

  • Lee, Hye-Yun;Chung, Yong-Jae;Lee, Kyu-Sik;Han, Sung-Hee
    • 보존과학연구
    • /
    • s.21
    • /
    • pp.145-175
    • /
    • 2000
  • To examine the method for preservation of papers, 9 kinds of papers were purchased and pretreated for 6 months with various artificial conditions which were controlled as 3 temperature classes($20^{\circ}C$, $80^{\circ}C$, $-20^{\circ}C$&$20^{\circ}C$) and 4 humidity classes(40%, 60%, 80%, 100%).Whiteness, acidity and folding endurance were measured to examine the state of papers pretreated under each condition. From the resultexamining the state, all the papers were best condition at low temperature($20^{\circ}C$) and low humidity(40%) and damaged at high temperature($80^{\circ}C$) and high humidity(100%).The values of whiteness, acidity, and folding endurance were measure din relation with deterioration of papers. According to damage of papers caused by the chemical agent, papers became to be acidic, increased color difference and reduced the force of folding endurance. The effect of change of temperature($-20^{\circ}C$&$20^{\circ}C$) on degradation of papers was not well acquired. Because the period of investigation was not long enough to acquire the data. So the more studies are needed to find the cause of damage of papers.

  • PDF

A behavioral approach to increase recycling behavior: An examinination of effect of environmental alteration and prompts (환경문제에서의 재활용 행동 증진을 위한 행동분석적 실험 연구 - 환경적 변화와 프롬트의 효과를 중심으로-)

  • 오세진;양병화;현보성;황혜연
    • Hwankyungkyoyuk
    • /
    • v.14 no.1
    • /
    • pp.19-31
    • /
    • 2001
  • This study examined the effect of environmental alteration and prompts on recycling behavior. An A-B-BC with a control condition design was employed. Subjects in this study were college students, professors, and employees at a university building. After a baseline phase, environmental alteration was I effect in the next phase and both environmental alteration and prompts were in effect in the final phase for the control condition. The environmental alteration consisted of providing four separation containers for the paper cups, cans recyclable paper, and the disposable on each floor in the building. The prompts consisted of providing the information about the importance of environmental preservation and how to separate the materials in the appropriate containers using an information board and pamphlets. The dependent variables were (1) the number of cans collected in can container, (2) the number of paper cups collected in cup container, (3) the rate of correct separation of cans, (4) the rate of correct separation of paper cups, and (5) the weight of disposable. The rates of correct separations of cans and paper cups were obtained by calculating the percentage of thenumber of recyclable cans and paper cups in the corresponding containers. The results indicated that environmental alteration had positive effects on all the dependent variables. Also, when the prompts were added to the environmental alteration, the incremental effect of the prompts was demonstrated. The implications and limitations of theses findings were discussed and the direction of future studies was also proposed.

  • PDF

A Study on Preservation and Development of Agricultural Land (농지보존에 대한 수도권 주민 의식 조사 연구)

  • Park, Young-Choon;Min, Sung-Hee;Lee, Seong-Woo
    • Journal of Korean Society of Rural Planning
    • /
    • v.8 no.1 s.15
    • /
    • pp.41-59
    • /
    • 2002
  • The condition and management of land resources has become an increasing matter of concern in recent years, because of the pressure placed upon land for agricultural use by expanding populations and economic development. Pressures upon land quality can lead to various forms of land degradation, such as in soil erosion, soil fertility decline, adverse changes in water resources, salinization of irrigated areas, or decline in the biological condition of forests or rangelands. In 1992, World Bank estimates that the cost of degraded areas has been estimated as 10-50 times higher than that of measures to prevent degradation. Based upon a survey interviewed with people living in rural areas, the present study argue that it is important to establish policies for preventing changes in agricultural land use, to provide early warning of adverse trends and identification of problem areas. The present study also stresses that stewardship of agricultural land resources plays a leading role in achieving sustainable rural development not to mention agricultural and forestry production.

A Study on Suitable Condition of Accelerated Aging Test and Evaluation Criteria of Data Stability for Archival Performance Analysis of BD-R media (BD-R 장기보존 특성 평가를 위한 가속 열화 실험 조건과 안정성 평가 기준에 관한 연구)

  • Lee, Kwan-Yong;Park, Sun-Joo;Kim, Do-Hyun;Jo, Yi-Hyung;Kim, Young-Joo
    • Transactions of the Society of Information Storage Systems
    • /
    • v.10 no.1
    • /
    • pp.7-13
    • /
    • 2014
  • The Blu-ray Disc Recordable(BD-R) is one of strong candidates for archival application among optical media formats, because of its large capability. However, the well-defined accelerated aging test conditions and evaluation criteria have not yet been fully confirmed for BD-R. In this study, the data stability and degradation aspect of BD-R were analyzed by the random-symbol error rate(R-SER) measurement after the accelerated aging test. And a reasonable test condition of accelerated aging for BD-R and the appropriate evaluation criterion using R-SER measurement were discussed.

A Study of relationship between Longevity and Sasang Constitution (장수(長壽)와 사상체질(四象體質)과의 상관성(相關性)에 관(關)한 연구(硏究))

  • Lee, Sea-yun;Kim, Dal-rae
    • Journal of Sasang Constitutional Medicine
    • /
    • v.10 no.1
    • /
    • pp.295-309
    • /
    • 1998
  • The purpose of this paper was to investigated to the relationship between longevity and Sasang Constitution. The investigation of this paper is composed of 4 parts. First part is investigated to the distribution of sex constitution and constitutional form. Second part is the distribution of the special of body quality(blood pressure, Pulse, Respiration, heredity, stool frequency) and the disease. Third part is the relation of the longevity reason(diet, alcohol intake, smoking). Fourth part is the relationship between the QSCC II and longevity reason. The results were as follows : 1. In case of a macrobian, Soyangin is much more in constitution. 2. A macrobian is generally short and thin. 3. About the macrobian's strength of heredity, there is no any meaningful conclusion, but more studying relationship between heredity and longevity is needed. 4. A macrobian has normal condition in blood pressure, pulse and feces condition. 5. In case of macrobian, the portion of a light eater, non-smoker, and abstainer is high, they like warm food. 6. A macrobian who is active and diligent has high accomplishment and good sociality. Considering above conclusion, a macrobian is related to Soyangin in characteristic of constitution. In the future, more studying is needed whether the macrobian has kept their lives with their unique preservation of health or not.

  • PDF

A Study on the Design Guidelines of a Storage for Conservation of Relics in a Museum (문화재 보존을 위한 박물관 수장고의 공간계획 지침 연구)

  • Jung Sung-Wook
    • Korean Institute of Interior Design Journal
    • /
    • v.15 no.3 s.56
    • /
    • pp.144-154
    • /
    • 2006
  • Except the time when relics of a museum are exhibited or loaned to the public, they are stored in a storage. In addition, it is common view that collections are exhibited a few of total stored collections in a museum. Therefore, the environmental condition of a storage is an important factor. Hereby, the purpose of this study is to suggest the design guidelines of a storage for conservation of relics in a museum. The results from this study are as follows briefly. First, location of storages has to be located and centralized above ground against preservation environment and additional renovation. Second, for storage size, It is reasonable to secure long-term experimental data after planning about 20% of whole section in present domestic situation. Third, in order to prevent environmental deterioration due to short storage floor space, adequate storage height has to be secured against a mezzanine deck and spare storages need to be planned. Where a mezzanine deck is designed, detailed plans have to be supported for equal micro climate in a storage. Fourth, in respect of environmental control of storages, finish materials with adjustment ability on relative humidity have to be used after the system is installed jointly direct and indirect way by air chamber, considering domestic condition for management of intermittent ventilation.