• Title/Summary/Keyword: 알버타

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Geochemical Characteristics of Devonian Cairn Formation in Alberta, Canada (캐나다 알버타 지역의 데본기 Cairn층의 지화학적 특성 연구)

  • Park, Myong-Ho;Kim, Ji-Hoon;Lee, Sung-Dong;Choi, Ji-Young;Kil, Yong-Woo
    • Economic and Environmental Geology
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    • v.43 no.2
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    • pp.85-100
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    • 2010
  • Devonian Cairn Formation is one of the important hydrocarbon reservoirs in Alberta, Canada. However, the Cairn Formation, outcropped in the study area, is not prospective reservoir with poor porosity and permeability by some late diagenetic processes. In this study, geochemical characteristics of the Cairn Formation were studied to use these preliminary results for advanced geological and geophysical petroleum explorations in the near future. Rock-Eval pyrolysis showed that total organic carbon content is less than 0.3 wt.%, indicating a minor amount of bitumen and/or other hydrocarbons. The carbonates in the Cairn Formation are mainly composed of subhedral and anhedral dolomites. Pore sizes in the carbonate are various, ranging from nanometer to micrometer. Clastic sediments increase in the upper and lower parts of the Cairn Formation, probably due to changing its depositional conditions. The Cairn Formation can also be divided into several intervals based on Ca/Mg ratio in dolomite and degree of amount of calcite. These could be formed by different sedimentary environment, degree of cementation and recrystallization, different saline/fresh water, etc.

사슴사료에서의 알팔파 효과

  • 권찬호
    • Korean Deer Journal
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    • no.21
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    • pp.19-25
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    • 1995
  • 우리나라의 사슴에 공급되는 조사료는 대부분 중국산 갈잎건초, 옥수수 사일리지 및 일부 자가 생산된 조사료이다. 우리나라에서 녹용생산을 위해 사육되고 있는 사슴은 6개의 사슴아과중 진사슴아과(Cervinae)에 속하는 꽃사슴, 붉은사슴, 엘크, 다마 사슴들로 이들은 거친사료에 가장 잘 적응되어 있는 종류들이다. 특히 사슴은 타 동물과는 달리 난틴성분을 분해할 수 있는 능력이 있으므로 갈잎이나 어린새싹등을 소화하는데 잘 길들여져 있다. 그러나 우리나라에서 수입하고 있는 갈잎은 품질이 균일하지 못한 경우가 있고 사슴의 사육기간에 따라 고단백사료를 필요로 하므로 대체 사료의 개발이라는 측면에서 가격만 적당하다면 다양한 무기물과 미지성장인자가 많이 함유된 것으로 알려진 알팔파도 좋은 사료자원이 될 수 있을 것이다. 그러나 이러한 알팔파를 사슴사료로 이용하기 위해서는 섬유소와 에너지 단백질의 적정요구량을 결정하고 여러가지 가공알팔파를 적절히 이용하는 방법을 찾아내는 것이 필요하다. 따라서 여기에서는 1992년부터 1993년까지 카나다의 알버타 대학에서 실시한 사슴사료로써 알팔파의 효과와 각종 가공 알팔파의 올바른 이용방법에 대해 연구한 것을 발표하고자 한다.

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The Association between Resistance Exercise Frequency, Muscular Strength, and Health-Related Quality of Life in Korean Cancer Patients: The Korea National Health and Nutrition Examination Survey (KNHANES) 2014-2016 (한국 암환자들의 근력운동 빈도, 근력과 건강관련 삶의 질과의 관계: 국민건강영양조사 2014-2016년)

  • An, Ki-Yong;Kang, Dong-Woo;Min, Ji Hee
    • 한국체육학회지인문사회과학편
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    • v.57 no.5
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    • pp.269-279
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    • 2018
  • The purpose of this study is to examine the association between resistance exercise frequency, muscular strength, and health-related quality of life in Korean cancer patients. We performed complex sample general linear model and logistic regression analysis using data from a total of 647 cancer patients in the 2014~2016 Korean National Health and Nutrition Examination Survey (KNHANES). Participants who were participating in resistance exercise 0~1 day per week had lower EQ-5D index (0.852±0.016 vs. 0.890±0.020; p=0.006) and a significantly higher risk of having problems in mobility (Odd ratio[OR]=4.07; 95% confidence interval [CI]=1.31-12.63) compared to those who were participating in resistance exercise ≥ 5 days per week. Participants with low hand-grip strength had lower EQ-5D index (0.850±0.018 vs. 0.911±0.016; p<0.001) and a significantly higher risk of having problems in mobility (OR=4.94, 95% CI=2.14-11.41), usual activities (OR=5.18, 95% CI=1.56-17.14), and pain/discomfort (OR=2.46, 95% CI=1.33-4.55) compared to those with high hand-grip strength. This study showed that resistance exercise frequency and muscular strength were associated with health-related quality of life in Korean cancer patients.

Estimation of Discharge Using Mean Velocity Equations (평균유속공식을 활용한 하천 유량 산정)

  • Choo, Tai-Ho;Koh, Deuk-Koo;Lee, Sang-Jin
    • Journal of Korea Water Resources Association
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    • v.43 no.3
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    • pp.265-273
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    • 2010
  • This study proposed the method that can calculate discharge using hydraulic characteristics that can acquire easily-comparatively such as hydraulic radius, bed slope, depth to improve the stage-discharge curve equation considering only stage. Roughness coefficient n value and C value that hydraulic characteristics of rivers is reflected from Manning's equation and Chezy's equation using the measured data of the natural open channel in the report of Albert University estimated and calculated discharge on the basis of this. The method proposed in this study was calculated stunningly to measured discharge. And that compared with discharge by existent stage-discharge curve.

Estimation of Rivers Discharge by Probabilistic Velocity Function Considering Hydraulic Characteristics (하천 수리특성을 고려한 확률론적 유속공식에 의한 하천유량 산정)

  • Choo, Tai Ho;Lee, Sang Jin;Park, Sang Woo;Oh, Ryun Su
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.29 no.6B
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    • pp.537-542
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    • 2009
  • To improve stage-discharge curve equation considering water level's function, this study suggested the method that can efficiently compute rivers discharge based on hydraulic characteristics such as river width, area, channel bed slope and entropy concept adopting probabilistic approach. This scheme is proposed to estimate discharge from the velocity formulation based on the entropy function in the equilibrium state derived from the relation between mean and maximum flow velocity. It has been tested using field and laboratory hydraulic data collected from the Alberta university in Canada. As a result it was found that the method proposed in this study was more efficient and accurate comparing with the traditional stage-discharge curve equation.

Seismic Stratigraphy of Upper Devonian Carbonates Area in Northern Alberta, Canada (캐나다 북부 알버타주 데본기 후기 탄산염암 지역의 탄성파 층서)

  • Lee, Min-Woo;Oh, Jin-Yong;Yun, Hye-Su
    • Economic and Environmental Geology
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    • v.44 no.6
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    • pp.503-511
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    • 2011
  • The Upper Devonian Grosmont Formation in northern Alberta, Canada, underlies the erosion unconformity that formed between the Cretaceous and Upper Devonian. The formation is divided into four units on the basis of intercalated shales and showing a typical shelf environment of shallowing-upward. It was possible to separate four units(LG~UG3), considering the seismic interpretation attributes of polarity, continuity, frequency/spacing and amplitude and showing the reflection characteristics of the medium-high amplitude, medium-low frequency, good continuity, and subparallel reflection events. The formation can be interpreted as shelf or platform, based on in-situ core data. However, it is difficult, only with reflection attributes and features, to recognize the boundaries and sedimentary environment of parasequence. Therefore, we try to interprete by parasequence set in this study. The parasequence set was formed by erosion unconformity with systems tracts. The erosion unconformity can be recognized by facies data and karst, erosional surface. Grosmont carbonate deposits ranging from platform and shelf to shelf slope are; by wedge-shaped strata of characterized by complex sigmoid-oblique progradational configurations, reflecting a depositional history of upbuilding and outbuilding in response to sea-level changes. Most of the sedimentary units is interpreted as platforms under regression and lowstand environments that support is evidences. In particular, shale layer at the basal part of the highstand systems tracts represents the regressive to lowstand of sea level.

Evaluation of Low-temperature Compaction Characteristics According to Organic Matter Content through Laboratory Compaction Tests (실내 다짐시험을 통한 유기물 함량에 따른 저온 다짐 특성 분석)

  • Choi, Hyun-Jun;Kim, Sewon;Lee, Seungjoo;Park, Hyeontae;Choi, Hangseok;Kim, YoungSeok
    • Journal of the Korean Geotechnical Society
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    • v.40 no.3
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    • pp.93-100
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    • 2024
  • Pore water freezes in low-temperature compaction, which leads to different compaction characteristics compared to room temperature conditions. In regions like Alberta, Canada, where organic soils are prevalent, compaction performance is influenced by the high water retention and compressibility of organic soils, as well as their sensitivity to freezing and thawing. Alberta's strict environmental regulations demand the reuse of excavated soil for backfill, and the long winter season creates challenging conditions for civil engineering projects. In this study, a laboratory compaction test was conducted to evaluate the low-temperature compaction characteristics of organic soils with varying organic content. The results indicate that the optimum moisture content increases as the organic content increases, and the maximum dry unit weight decreases by up to 21.9%. In addition, under temperature conditions below -4℃, no optimum moisture content was observed, and the dry unit weight decreased as the moisture content increased.