• 제목/요약/키워드: long day

검색결과 1,983건 처리시간 0.032초

Effect of photoperiod and temperature on the reproductive responses of Protaetia brevitarsis

  • Kim, Seonghyun;Park, Hae-Chul;Kim, Namjung;Park, Ingyun
    • International Journal of Industrial Entomology and Biomaterials
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    • 제37권2호
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    • pp.90-94
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    • 2018
  • In the present study, we investigated the effects of temperature and photoperiod on oviposition of Protaetia brevitarsis. The effects of long- and short-day cycles on oviposition and egg hatching of P. brevitarsis were investigated at different temperatures. Three male-female pairs were confined to oviposition chambers maintained at $20^{\circ}C$, $25^{\circ}C$, $30^{\circ}C$, and $35^{\circ}C$, with 16L:8D and 8L:16D photoperiod. Oviposition was observed at all temperatures. The total number of eggs laid per female was between 46.8 and 110.8, and the optimal temperature for oviposition and fertility was between $20^{\circ}C$ and $30^{\circ}C$. Furthermore, it was difficult for the eggs to hatch at $35^{\circ}C$. Fewer eggs were laid under short photoperiod than under long photoperiod at all temperatures. Hatching success was 93.5% at $20^{\circ}C$, 90.9% at $25^{\circ}C$, 71.5% at $30^{\circ}C$ and 37.3% at $35^{\circ}C$ under long-day(16L:8D) condition and Temperature had a strong effect on the time to hatching. Neither oviposition nor subsequent egg hatching was influenced by photoperiod and temperature. The information obtained will be useful for mass rearing P. brevitarsis.

Circadian Biorhythmicity in Normal Pressure Hydrocephalus - A Case Series Report

  • Herbowski, Leszek
    • Journal of Korean Neurosurgical Society
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    • 제65권1호
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    • pp.151-160
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    • 2022
  • Continuous monitoring of intracranial pressure is a well established medical procedure. Still, little is known about long-term behavior of intracranial pressure in normal pressure hydrocephalus. The present study is designed to evaluate periodicity of intracranial pressure over long-time scales using intraventricular pressure monitoring in patients with normal pressure hydrocephalus. In addition, the circadian and diurnal patterns of blood pressure and body temperature in those patients are studied. Four patients, selected with "probable" normal pressure hydrocephalus, were monitored for several dozen hours. Intracranial pressure, blood pressure, and body temperature were recorded hourly. Autocorrelation functions were calculated and cross-correlation analysis were carried out to study all the time-series data. Autocorrelation results show that intracranial pressure, blood pressure, and body temperature values follow bimodal (positive and negative) curves over a day. The cross-correlation functions demonstrate causal relationships between intracranial pressure, blood pressure, and body temperature. The results show that long-term fluctuations in intracranial pressure exhibit cyclical patterns with periods of about 24 hours. Continuous intracranial pressure recording in "probable" normal pressure hydrocephalus patients reveals circadian fluctuations not related to the day and night cycle. These fluctuations are causally related to changes in blood pressure and body temperature. The present study reveals the complete loss of the diurnal blood pressure and body temperature rhythmicities in patients with "probable" normal pressure hydrocephalus.

EFFECT OF ABOMASAL INFUSION OF ALANINE AND ASPARTIC ACID ON GROWTH HORMONE SECRETION IN SHEEP

  • Tanizawa, K.;Ashida, K.;Hosoi, E.;Matsui, T.;Yano, H.
    • Asian-Australasian Journal of Animal Sciences
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    • 제7권4호
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    • pp.467-470
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    • 1994
  • Effects of animo acids infusion into the abomasum on plasma growth hormone (GH) concentration were investigated using three wethers of 54 kg of average body weight. Wethers were infused with either 3.25 mmol/kg BW/day of sodium chloride solution (control), 3 mmol/kg BW/day of alanine (Ala), or 3 mmol/kg BW/day of aspartic acid (Asp) continuously for five days through an abomasum cathether in a $3{\times}3$ Latin square desing. On the day of starting infusion (day 0) and day 4 blood samples were collected from a jugular vein every fifteen minutes for six hours after feeding, and their GH concentrations were measured. Blood samples were also collected immediately before starting infusion (day 0), and before feeding of day 1, day 2 and day 4, and their plasma free amino acid concentrations were measured. In the animals infused with Ala, plasma free Ala concentration was increased by Ala infusion and it continued for four days. Plasma GH concentration of these animals increased on day 0, but this phenomenon disappeared on day 4. In the animals infused with Asp, the increase in plasma Asp concentration was observed only on day 1. Plasma GH concentration of these animals was not affected by Asp infusion. These results suggest that continuous Ala infusion stimulates GH secretion for a short period, but the effect would not last long, and that continuous Asp infusion does not affect plasma GH concentration.

낙동강 달서지구 강변 여과수 취수에 관한 예비 연구

  • 김형수;박승기;정찬;백건하;원이정;신흥섭
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2002년도 총회 및 춘계학술발표회
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    • pp.93-97
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    • 2002
  • This research introduces some preliminary results of bank filtering intake method adopted in Dalseo area, Nakdong River. This intake method has been planned to supply water resources of 41,000 ㎥/day to Goryeong-Gun and Seongju-Gun in 2016. It is believed that the bank filtering intake method can afford to supply 41,000 ㎥/day amount of water resources and that the raw water quality using the method has more advantages in water treatment than direct surface water intake. Even though the safety yield about individual vertical well is roughly estimated to about 2,000 ㎥/day, it is desirable to decrease the safety yield to about 1,000 ㎥/day in the consideration of long term and simultaneous well pumpings and other unknown factors. Ongoing study will give basic data and new techniques to solve the problems appearing in application of bank filtering method as well.

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연속 회분식 반응기를 이용한 폐수처리에서 고정화 슬러지의 거동 특성 (The behavior characteristics of immobilized sludge in waste water treatment using sequencing batch reactor(SBR).)

  • 최석순
    • 환경위생공학
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    • 제11권2호
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    • pp.1-7
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    • 1996
  • The behavior of total organic carbon (TOC) and phosphate were observed for 15 days with immobilized activated sludge using polyacrylamide (PAA) by sequencing batch reactor (SBR). In the preparation of immobilized sludge by PAA, it was found that suitable acrylamide concentration for actual wastewater treatment was to be 15% through the batch test. When SBR system was operated in the repeated aerobic and anaerobic conditions, TOC removal efficiency was 92%. The uptake rate of phosphate was increased from 1.78 mg-P/g cell/hr on the 5th day of acclimation to 2.5 mg-P/g cell/hr on the 15th day of acclimation. And the total phosphorus content in PAA bead was increased from 40 mg-P/g cell on the 1st day of operation to 55 mg-P/g cell on the 15th day of operation. From this study, lowering the volume of aeration tank was possible when PAA bead was used in wastewater treatment and long operation was also possible without the settler.

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장기요양시설 노인에 대한 간호서비스 제공시간 분석 (Care Time of Elderly in Long-Term Care Facilities)

  • 김은경
    • 간호행정학회지
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    • 제9권3호
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    • pp.353-366
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    • 2003
  • Purpose: This study was to define the care time of elderly in long-term care facilities and to compare and analysis the care time by staff and facility types. Method: The data were collected from 530 elderly over sixty, residing in two long-term care hospitals for dementia, three long-term care hospitals for the elderly and two skilled nursing facilities. Care time for individual residents was measured the total time spent by nurses, aides. Result: The average care time measured by nursing staff was 158.6 minutes a day. The average care time for one resident by nurse was 40.4 minutes, and by aides, 118.2 minutes. The difference of the care time showed statistical significance between long-term care facility types(p<0.001) : average care time for dementia hospital(199.1min) was twice as long as that of skilled nursing facility(94.1min). Conclusion: The results of the study showed that the care time differentiates care time provided to elderly in long-term care facilities in Korea. The study suggests the need to emphasize the importance of standardization of level of staff and service programs by the long-term facilities.

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일본 개호보험 도입에 따른 장기요양보호시설의 변화에 관한 연구 (A Study on the Functional Change of Elderly Care Facilities according to Introduction of Long-Term Care Insurance in Japan)

  • 이특구;김석준
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제12권1호
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    • pp.17-26
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    • 2006
  • The demand for long-term care is continuously on the rise as number of elders among the population increases. Due to the rapid growing demand for long-term care in Korea, there have been discussions for the introduction of new long-term care system into Korean society. The purpose of this study in to analyze changes of elderly care facilities in Japan after the beginning of long-term care system in 2000. The functional and architectural changes of Japanese facilities were researched to be used as references for predicting changes in Korean facilities. In Japan, after the execution of long term care system, the alterative aspect of facilities is divided into some categories; in sum, the change of environment for long term care, the effort to spread specialized facilities in a whole community, and the tendency to complex a variety of function of facilities such as an facility for home care service, and the like.

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지역사회주민의 평생학습을 위한 도서관의 역할에 관한 연구 (A Study on the Roles of Library for Community Residents Life-Long Learning)

  • 김영준
    • 한국문헌정보학회지
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    • 제40권1호
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    • pp.217-239
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    • 2006
  • 21세기는 지식 정보화사회로 외부적인 환경 변화에 따라 국민들은 도서관에 다양한 기능을 요구하고 있다. 우선 전통적인 도서 보관(Container)기능에서 정보 접점(Connector) 기능을 요구하며. 정보 및 학습격차 해소를 위한 사회통합 기능과 지역단위의 인적자원개발을 위한 평생학습의 장으로서 역할을 기대하고 있다. 또한 정부 내의 환경도 교육인적자원부에 국가인적자원개발을 위한 '교육부총리제'를 도입하였으며 주5일제 및 고령화 사회에 대비한 도서관의 변화를 요구하고 있다. 지식 정보화, 주5일제, 고령화, 인적자원개발 등 평생학습사회의 새로운 패러다임과 불가분의 역학관계에 있는 도서관의 역할에 대하여 알아보고 앞으로 도서관이 추구해야 할 방향을 제시하였다.

Evaluation of enteral formulas for nutrition, health, and quality of life among stroke patients

  • Kang, Yun-Kyeong;Lee, Ho-Sun;Paik, Nam-Jong;Kim, Woo-Sub;Yang, Mi-Hi
    • Nutrition Research and Practice
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    • 제4권5호
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    • pp.393-399
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    • 2010
  • Enteral nutritional support has been used via tube feeding for dysphagic stroke patients. We performed long and short term trials to evaluate the effects of commercial enteral nutritional supports on nutrition and health in stroke patients (mRS = 3~5) and quality of life in their caregivers. For a long term study, we recruited chronic (${\geq}$ 1 yrs) stroke patients (n = 6) and administered them 6 cans/day (1,200 kcal) of the commercial enteral formula N for 6 months according to IRB-approved protocol. We collected peripheral blood at 0, 2, 4 and 6 months. For a short term study, we recruited acute (${\leq}$ 3 months) stroke patients (n = 12) and randomly administered them two different commercial enteral formulas, N or J, for 2 weeks. We collected their blood at 0, 4, 7 and 14 day of the administration. Blood samples were analyzed to quantify 19 health and nutritional biomarkers and an oxidative stress biomarker, malondialdehyde (MDA). In order to evaluate quality of life, we also obtained the sense of competence questionnaire (SCQ) from all caregivers at 'before' and 'after trials'. As results, the enteral formula, N, improved hemoglobin and hematocrit levels in the long term trial and maintained most of biomarkers within normal ranges. The SCQ levels of caregivers were improved in the long term treatment (P < 0.05). In a case of the short term study, both of enteral formulas were helpful to maintain nutritional status of the patients. In addition, MDA levels were decreased in the acute patients following formula consumption (0.05 < P < 0.1). Most of health and nutrition outcomes were not different, even though there is a big difference in price of the two products. Thus, we evaluate the formula N has equal nutritional efficacy compared to the formula J. In addition, long term use of enteral formula N can be useful to health and nutrition of stroke patients, and the quality of life for their caregivers.