• Title/Summary/Keyword: State of matter

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Structural and Resting-State Brain Alterations in Trauma-Exposed Firefighters: Preliminary Results (외상에 노출된 소방관들의 뇌 구조 및 휴식기 뇌기능 변화: 예비 결과)

  • Yae Won Park;Suhnyoung Jun;Juwhan Noh;Seok Jong Chung;Sanghoon Han;Phil Hyu Lee;Changsoo Kim;Seung-Koo Lee
    • Journal of the Korean Society of Radiology
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    • v.81 no.3
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    • pp.676-687
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    • 2020
  • Purpose To analyze the altered brain regions and intrinsic brain activity patterns in trauma-exposed firefighters without posttraumatic stress disorder (PTSD). Materials and Methods Resting-state functional MRI (rsfMRI) was performed for all subjects. Thirty-one firefighters over 40 years of age without PTSD (31 men; mean age, 49.8 ± 4.7 years) were included. Twenty-six non-traumatized healthy controls (HCs) (26 men; mean age, 65.3 ± 7.84 years) were also included. Voxel-based morphometry was performed to investigate focal differences in the brain anatomy. Seed-based functional connectivity analysis was performed to investigate differences in spontaneous brain characteristics. Results The mean z-scores of the Seoul Verbal Learning Test for immediate and delayed recall, Controlled Oral Word Association Test (COWAT) score for animals, and COWAT phonemic fluency were significantly lower in the firefighter group than in the HCs, indicating decreased neurocognitive function. Compared to HCs, firefighters showed reduced gray matter volume in the left superior parietal gyrus and left inferior temporal gyrus. Further, in contrast to HCs, firefighters showed alterations in rsfMRI values in multiple regions, including the fusiform gyrus and cerebellum. Conclusion Structural and resting-state functional abnormalities in the brain may be useful imaging biomarkers for identifying alterations in trauma-exposed firefighters without PTSD.

Review on the Justifiable Grounds for Withdrawal of Meaningless Life-sustaining Treatment -Based on a case of Supreme Court's Sentence No. 2009DA17417 (May 21, 2009)- (무의미한 연명치료 중단 등의 기준에 관한 재고 - 대법원 2009.5.21 선고 2009다17417사건 판결을 중심으로 -)

  • Moon, Seong-Jea
    • The Korean Society of Law and Medicine
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    • v.10 no.2
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    • pp.309-341
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    • 2009
  • According to a case of Supreme Court's Sentence No. 2009DA17417 (May 21, 2009), the Supreme Court judges that 'the right to life is the ultimate one of basic human rights stipulated in the Constitution, so it is required to very limitedly and conservatively determine whether to discontinue any medical practice on which patient's life depends directly.' In addition, the Supreme Court admits that 'only if a patient who comes to a fatal phase before death due to attack of any irreversible disease may execute his or her right of self-determination based on human respect and values and human right to pursue happiness, it is permissible to discontinue life-sustaining treatment for him or her, unless there is any special circumstance.' Furthermore, the Supreme Court finds that 'if a patient who is attacked by any irreversible disease informs medical personnel of his or her intention to agree on the refusal or discontinuance of life-sustaining treatment in advance of his or her potential irreversible loss of consciousness, it is justifiable that he or she already executes the right of self-determination according to prior medical instructions, unless there is any special circumstance where it is reasonably concluded that his or her physician is changed after prior medical instructions for him or her.' The Supreme Court also finds that 'if a patient remains at irreversible loss of consciousness without any prior medical instruction, he or she cannot express his or her intentions at all, so it is rational and complying with social norms to admit possibility of estimating his or her own intentions on withdrawal of life-sustaining treatment, provided that such a withdrawal of life-sustaining treatment meets his or her interests in view of his or her usual sense of values or beliefs and it is reasonably concluded that he or she could likely choose to discontinue life-sustaining treatment, even if he or she were given any chance to execute his or her right of self-determination.' This judgment is very significant in a sense that it suggests the reasonable orientation of solutions for issues posed concerning withdrawal of meaningless life-sustaining medical efforts. The issues concerning removal of medical instruments for meaningless life-sustaining treatment and discontinuance of such treatment in regard to medical treatment for terminal cases don't seem to be so much big deal when a patient has clear consciousness enough to express his or her intentions, but it counts that there is any issue regarding a patient who comes to irreversible loss of consciousness and cannot express his or her intentions. Therefore, it is required to develop an institutional instrument that allows relevant authority to estimate the scope of physician's medical duties for terminal patients as well as a patient's intentions to withdraw any meaningless treatment during his or her terminal phase involving loss of consciousness. However, Korean judicial authority has yet to clarify detailed cases where it is permissible to discontinue any life-sustaining treatment for a patient in accordance with his or her right of self-determination. In this context, it is inevitable and challenging to make better legislation to improve relevant systems concerning withdrawal of life-sustaining treatment. The State must assure the human basic rights for its citizens and needs to prepare a system to assure such basic rights through legislative efforts. In this sense, simply entrusting physician, patient or his or her family with any critical issue like the withdrawal of meaningless life-sustaining treatment, even without any reasonable standard established for such entrustment, means the neglect of official duties by the State. Nevertheless, this issue is not a matter that can be resolved simply by legislative efforts. In order for our society to accept judicial system for withdrawal of life-sustaining treatment, it is important to form a social consensus about this issue and also make proactive discussions on it from a variety of standpoints.

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Debating Universal Basic Income in South Korea (기본소득 논쟁 제대로 하기)

  • Back, Seung Ho;Lee, Sophia Seung-yoon
    • 한국사회정책
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    • v.25 no.3
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    • pp.37-71
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    • 2018
  • Since 2016, public and political interest on basic income has been increased beyond academic interest. The recent debate on basic income has expanded on issues regarding to the concrete implementation of basic income moving further than the debate on conception of the basic income in the abstract level. This study examines major critiques of basic income which was raised from social policy area and makes a counter-argument on these critiques. Major points summarized as follows. First, the problem of jobs and social insurance exclusion is not serious enough to call for basic income. Second, existing social security systems will be crowded out by excessive financial burden if basic income is introduced. Third, policies to cultivate citizens' capacities to cope with a technological change should be given priority over basic income. This study disputes these critiques by counter arguing four points. First, it is necessary to reconstruct welfare state based on basic income, given the labor market changes, such as long-term trend of employment change, newly emerging employment of platform companies, and inconsistency of platform labor and social insurance. Second, hypothesis of crowding-out effect on social security system is just a criticism that can be applied to the basic income initiative of the right-wing. Also, it is unable to find a logical basis or evidence of this hypothesis from the historical process of welfare state development or previous studies. Third, it is necessary to discuss how to reconfigure existing social security system and basic income which are complementary to each other and also have consistency with labor market as a configuration, not as a matter of choosing between basic income and social security system. Fourth, de-laborization does not mean a refusal to labor but a free choice, and the basic principle of social security is not needs but right. In conclusion, in order to develop more productive debate on basic income, it requires more sophisticated discussion and criticism from the point of view of the distributive justice; the debate on the sustainability of social insurance-centered welfare states; and debates on the political realization of basic income.

Korean nation-centralism and Confucianism(I) - the reflection of controlled modern rationality (한국의 국가 중심주의와 유교(I) - 통제적 근대 합리성에 관한 성찰 -)

  • Lee, Sang-bong;Rhee, Myung-su
    • The Journal of Korean Philosophical History
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    • no.28
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    • pp.237-266
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    • 2010
  • This thesis is to check whether the modernization, promoted mainly in 1960-1970 of Korea may have the relations with Confucian values or have a gap between this and that, and have the question about the idea of the appearance of modernity under Park Jung-hee's government, which is based on the viewpoint that Confucianism would have been made ill use of or have contribution to the nation-directing modernity, especially to the modernization of people. In a sense this thesis demands the overcome of the modern ills such as social dichotomy, leaving out matters of locals, and neglecting the diversities and singularities of creatures, resulted from efficiencies and uniformity caused by nation-centralism. At first Confucianism have represented humanism with a view to finding the mean between the two of locals, affairs, and men. As such it has seek to find centrality, which means my real mind for meeting outward things or the optimum as the mean, the best state between of the two. The political doctrines modified from Confucian learnings including chung, hyo, samgang, and oryun worked as the mechanism for finding nation-directing modernity. As a result we have lived in the modernity, strengthened by nation-centralism. And the leading concepts in related with Neo-Confucianism had people lose their spaces of desire for their own future or got them to be narrow. Accordingly the modernization of Korea means not an integral space in which we can achieve what we want in various aspects, but a deficient space to be complemented, resulted from the centralization of all conditions of life, dichotomous way of approaching matters by nation-centralism, far from being the essence of Confucianism. In the end the rapid modernization by the leaders in Korea has given rise to the concentration politics, economy, and so forth on Seoul as the center. Then we should deeply reflect the deficiency state of centralism like this and how Confucianism would have been responsible for it and will give how to relieve the unequal centralism of nation. Now for this matter we would like to expect our study in the future.v

The Present State of Domestic Acceptance of Various International Conventions for the Prevention of Marine Pollution (해양오염방지를 위한 각종 국제협약의 국내 수용 현황)

  • Kim, Kwang-Soo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.12 no.4 s.27
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    • pp.293-300
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    • 2006
  • Domestic laws such as Korea Marine Pollution Prevention Law (KMPPL) which has been mae and amended according to the conclusions and amendments of various international conventions for the prevention a marine pollution such as MARPOL 73/78 were reviewed and compared with the major contents of the relevant international conventions. Alternative measures for legislating new laws or amending existing laws such as KMPPL for the acceptance of major contents of existing international conventions were proposed. Annex VI of MARPOL 73/78 into which the regulations for the prevention of air pollution from ship have been adopted has been recently accepted in KMPPL which should be applied to ships which are the moving sources of air pollution at sea rather tlnn in Korea Air Environment Conservation Law which should be applied to automobiles and industrial installations in land. The major contents of LC 72/95 have been accepted in KMPPL However, a few of substances requiring special care in Annex II of 72LC, a few of items in characteristics and composition for the matter in relation to criteria governing the issue of permits for the dumping of matter at sea in Annex III of 72LC, and a few of items in wastes or other matter that may be considered for dumping in Annex I of 96 Protocol have not been accepted in KMPPL yet. The major contents of OPRC 90 have been accepted in KMPPL. However, oil pollution emergency plans for sea ports and oil handling facilities, and national contingency plan for preparedness and response have not been accepted in KMPPL yet. The waste oil related articles if Basel Convention, which shall regulate and prohibit transboundary movement of hazardous waste, should be accepted in KMPPL in order to prevent the transfer if scrap-purpose tanker ships containing oil/water mixtures and chemicals remained on beard from advanced countries to developing and/or underdeveloped countries. International Convention for the Control if Harmful Anti-Fouling Systems on the Ships should be accepted in KMPPL rather tlnn in Korea Noxious Chemicals Management Law. International Convention for Ship's Ballast Water/Sediment Management should be accepted in KMPPL or by a new law in order to prevent domestic marine ecosystem and costal environment from the invasion of harmful exotic species through the discharge of ship's ballast water.

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The Morphology, Physical and Chemical Characteristics of the Red-Yellow Soils in Korea (우리나라 전토양(田土壤)의 특성(特性) (저구릉(低丘陵), 산록(山麓) 및 대지(臺地)에 분포(分布)된 적황색토(赤黃色土)를 중심(中心)으로))

  • Shin, Yong Hwa
    • Korean Journal of Soil Science and Fertilizer
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    • v.6 no.1
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    • pp.35-52
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    • 1973
  • Red Yellow Soils occur very commonly in Korea and constitute the important upland soils of the country which are either presently being cultivated or are suitable for reclaiming and cultivating. These soils are distributed on rolling, moutain foot slopes, and terraces in the southern and western parts of the central districts of Korea, and are derived from granite, granite gneiss, old alluvium and locally from limestone and shale. This report is a summary of the morphology, physical and chemical characteristics of Red Yellow Soils. The data obtained from detailed soil surveys since 1964 are summarized as follows. 1. Red-Yellows Soils have an A, Bt, C profile. The A horizon is dark colored coarse loamy or fine loamy with the thin layer of organic matter. The B horizon is dominantly strong brown, reddish brown or yellowish red, clayey or fine loamy with clay cutans on the soil peds. The C horizon varies with parent materials, and is coarser texture and has a less developed structure than the Bt horizon. Soil depth, varied with relief and parent materials, is predominantly around 100cm. 2. In the physical characteristics, the clay content of surface soil is 18 to 35 percent, and of subsoil is 30 to 90 percent nearly two times higher than the surface soil. Bulk density is 1.2 to 1.3 in the surface soil and 1.3 to 1.5 in the subsoil. The range of 3-phase is mostly narrow with 45 to 50 percent in solid phase, 30 to 45 percent in liquid one, and 5 to 25 percent in gaseous state in the surface soil; and 50 to 60 solid, 35 to 45 percent liquid and less than 15 percent gaseous in the subsoil. Available soil moisture capacity ranges from 10 to 23 percent in the surface soil, and 5 to 16 percent in the subsoil. 3. Chemically, soil reaction is neutral to alkaline in soils derived from limestone or old fluviomarine deposits, and acid to strong acid in other ones. The organic matter content of surface soil varying considerably with vegetation, erosion and cultivation, ranges from 1.0 to 5.0 percent. The cation exchange capacity is 5 to 40 me/100gr soil and closely related to the content of organic matter, clay and silt. Base saturation is low, on the whole, due to the leaching of extractable cations, but is high in soils derived from limestone with high content of lime and magnesium. 4. Most of these soils mainly contain halloysite (a part of kaolin minerals), vermiculite (weathered mica), and illite, including small amount of chlorite, gibbsite, hematite, quartz and feldspar. 5. Characteristically they are similar to Red Yellow Podzolic Soils and a part of Reddish Brown Lateritic Soils of the United States, and Red Yellow Soils of Japan. According to USDA 7th Approximation, they can be classified as Udu Its or Udalfs, and in FAO classification system to Acrisols, Luvisols, and Nitosols.

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Fermentation Characteristics of Juice Pomace Feed by Horse Feces Microbes (말분변 미생물을 이용한 주스박 사료의 발효 특성)

  • Hwang, Won-Uk;Kim, Gyeom-Heon;Niu, Kai-Min;Lim, Joung-Ho;Woo, Jae-Hoon;Chae, Hyun-Seok;Park, Nam-Geon;Kim, Soo-Ki
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.37 no.4
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    • pp.290-300
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    • 2017
  • In vitro fermentation was conducted to figure out alternative fiber sources for horse feed. For the development of value-added products as a horse feed resource, the pomaces from apple, carrot, grape, and citrus were fermented under solid-state conditions in the presence of 60% soybean meal with 40% of each fruit pomace at 60% of moisture content. Lactobacillus plantarum SK3873, Lactobacillus plantarum SK3893, Weissella cibaria SK3880, and Bacillus subtilis SK3889 were isolated from the fermented fruit pomace by inoculation of horse feces. For the growth of Bacillus subtilis, Saccharomyces cerevisiae, and Lactobacillus plantarum, they were inoculated in 3-step order at 0, 12, and 24 h, respectively. The fruit pomace was fermented for 48 h at $35^{\circ}C$. The pH of the apple, carrot, grape, citrus and all mixed pomaces decreased from 5.45~6.25 to 4.40~4.77. Microbial growth was maintained at $10^8{\sim}10^9cfu/g$. After 12 and 24 h incubation, dry matter of carrot pomace were highest at 54.84 and 56.66%, respectively (P<0.05) and that of grape pomace was lower than others during fermentation (P<0.05). Dry matter was generally reduced by about 20%. NDF decreased gradually or maintained after 24 h, indicating the fiber degradation. Ash content tended to decrease during fermentation. After 48 hours fermentation, Bacillus, yeast and Lactobacillus showed an excellent growth by using juice by-products. These results suggest that fermented juice pomace has a potential as horse feedstuff with probiotics to maintain beneficial microflora in horse gut.

Recognition and Enforcement of Foreign Arbitral Awards in Korea (한국에서의 외국중재판정의 승인과 집행)

  • Kim, Sang-Ho
    • Journal of Arbitration Studies
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    • v.17 no.3
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    • pp.3-30
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    • 2007
  • The New York Convention(formally called "United Nations Convention on the Recognition and Enforcement of Foreign Arbitral Awards") done in New York on June 10, 1958 has been adhered to by more than 140 States at the time of this writing, including almost all important trading nations from the Capitalist and Socialist World as well as many developing countries. The Convention can be considered as the most important Convention in the field of arbitration and as the cornerstone of current international commercial arbitration. Korea has acceded to the New York Convention since 1973. When acceding to the Convention, Korea declared that it will apply the Convention to the recognition and enforcement of awards made only in the territory of another Contracting State on the basis of reciprocity. Also, Korea declared that it will apply the Convention only to differences arising out of legal relationships, whether contractual or not, which are considered as commercial under the national law of Korea. The provisions relating to the enforcement of arbitral awards falling under the New York Convention begin at Article III. The Article III contains the general obligation for the Contracting States to recognize Convention awards as binding and to enforce them in accordance with their rules of procedure. The Convention requires a minimum of conditions to be fulfilled by the party seeking enforcement. According to Article IV(1), that party has only to supply (1) the duly authenticated original award or a duly certified copy thereof, and (2) the original arbitration agreement or a duly certified copy thereof. In fulfilling these conditions, the party seeking enforcement produces prima facie evidence entitling it to obtain enforcement of the award. It is then up to the other party to prove that enforcement should not be granted on the basis of the grounds for refusal of enforcement enumerated in the subsequent Article V(1). Grounds for refusal of enforcement are stipulated in Article V is divided into two parts. Firstly, listed in the first Para. of Article V are the grounds for refusal of enforcement which are to be asserted and proven by the respondent. Secondly, listed in Para. 2 of Article V, are the grounds on which a court may refuse enforcement on its own motion. These grounds are non-arbitrability of the subject matter and violation of the public policy of the enforcement country. The three main features of the grounds for refusal of enforcement of an award under Article V, which are almost unanimously affirmed by the courts, are the following. Firstly, The grounds for refusal of enforcement mentioned in Article V are exhaustive. No other grounds can be invoked. Secondly, and this feature follows from the first one, the court before which enforcement of the award is sought may not review the merits of the award because a mistake in fact or law by the arbitrators is not included in the list of grounds for refusal of enforcement set forth in Article V. Thirdly, the party against whom enforcement is sought has the burden of proving the existence of one or more of the grounds for refusal of enforcement. The grounds for refusal of enforcement by a court on its own motion, listed in the second Para. of Article V, are non-arbitrability of the subject matter and public policy of the enforcement country. From the court decisions reported so far at home and abroad, it appears that courts accept a violation of public policy in extreme cases only, and frequently justify their decision by distinguishing between domestic and international public policy. The Dec. 31, 1999 amendment to the Arbitration Act of Korea admits the basis for enforcement of foreign arbitral awards rendered under the New York Convention. In Korea, a holder of a foreign arbitral award is obliged to request from the court a judgment ordering enforcement of the award.

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Influence of Wheat Straw Pelletizing and Inclusion Rate in Dry Rolled or Steam-flaked Corn-based Finishing Diets on Characteristics of Digestion for Feedlot Cattle

  • Manriquez, O.M.;Montano, M.F.;Calderon, J.F.;Valdez, J.A.;Chirino, J.O.;Gonzalez, V.M.;Salinas-Chavira, J.;Mendoza, G.D.;Soto, S.;Zinn, R.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.6
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    • pp.823-829
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    • 2016
  • Eight Holstein steers ($216{\pm}48kg$ body weight) fitted with ruminal and duodenal cannulas were used to evaluate effects of wheat straw processing (ground vs pelleted) at two straw inclusion rates (7% and 14%; dry matter basis) in dry rolled or steam-flaked corn-based finishing diets on characteristics of digestion. The experimental design was a split plot consisting of two simultaneous $4{\times}4$ Latin squares. Increasing straw level reduced ruminal (p<0.01) and total tract (p = 0.03) organic matter (OM) digestion. As expected, increasing wheat straw level from 7% to 14% decreased (p<0.05) ruminal and total tract digestion of OM. Digestion of neutral detergent fiber (NDF) and starch, per se, were not affected (p>0.10) by wheat straw level. Likewise, straw level did not influence ruminal acetate and propionate molar proportions or estimated methane production (p>0.10). Pelleting straw did not affect ($p{\geq}0.48$) ruminal digestion of OM, NDF, and starch, or microbial efficiency. Ruminal feed N digestion was greater (7.4%; p = 0.02) for ground than for pelleted wheat straw diets. Although ruminal starch digestion was not affected by straw processing, post-ruminal (p<0.01), and total-tract starch (p = 0.05) digestion were greater for ground than for pelleted wheat straw diets, resulting in a tendency for increased post-ruminal (p = 0.06) and total tract (p = 0.07) OM digestion. Pelleting wheat straw decreased (p<0.01) ruminal pH, although ruminal volatile fatty acids (VFA) concentration and estimated methane were not affected ($p{\geq}0.27$). Ruminal digestion of OM and starch, and post-ruminal and total tract digestion of OM, starch and N were greater (p<0.01) for steam-flaked than for dry rolled corn-based diets. Ruminal NDF digestion was greater (p = 0.02) for dry rolled than for steam-flaked corn, although total tract NDF digestion was unaffected (p = 0.94). Ruminal microbial efficiency and ruminal degradation of feed N were not affected (p>0.14) by corn processing. However, microbial N flow to the small intestine and ruminal N efficiency (non-ammonia N flow to the small intestine/N intake) were greater (p<0.01) for steam-flaked than for dry rolled corn-based diets. Ruminal pH and total VFA concentration were not affected ($p{\geq}0.16$) by corn processing method. Compared with dry rolled corn, steam-flaked corn-based diets resulted in decreased acetate:propionate molar ratio (p = 0.02). It is concluded that at 7% or 14% straw inclusion rate, changes in physical characteristics of wheat straw brought about by pelleting negatively impact OM digestion of both steam-flaked and dry-rolled corn-based finishing diets. This effect is due to decreased post-ruminal starch digestion. Replacement of ground straw with pelleted straw also may decrease ruminal pH.

Perfusion MR Imaging of the Brain Tumor: Preliminary Report (뇌종야의 관류 자기공명영상: 예비보고)

  • 김홍대;장기현;성수옥;한문희;한만청
    • Investigative Magnetic Resonance Imaging
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    • v.1 no.1
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    • pp.119-124
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    • 1997
  • Purpose: To assess the utility of magnetic resonance(MR) cerebral blood volume (CBV) map in the evaluation of brain tumors. Materials and Methods: We performed perfusion MR imaing preoperatively in the consecutive IS patients with intracranial masses(3 meningiomas, 2 glioblastoma multiformes, 3 low grade gliomas, 1 lymphoma, 1 germinoma, 1 neurocytoma, 1 metastasis, 2 abscesses, 1 radionecrosis). The average age of the patients was 42 years (22yr -68yr), composed of 10 males and S females. All MR images were obtained at l.ST imager(Signa, CE Medical Systems, Milwaukee, Wisconsin). The regional CBV map was obtained on the theoretical basis of susceptibility difference induced by first pass circulation of contrast media. (contrast media: IScc of gadopentate dimeglumine, about 2ml/sec by hand, starting at 10 second after first baseline scan). For each patient, a total of 480 images (6 slices, 80 images/slice in 160 sec) were obtained by using gradient echo(CE) single shot echo-planar image(EPI) sequence (TR 2000ms, TE SOms, flip angle $90^{\circ}$, FOV $240{\times}240mm,{\;}matrix{\;}128{\times}128$, slice-thick/gap S/2.S). After data collection, the raw data were transferred to CE workstation and rCBV maps were generated from the numerical integration of ${\Delta}R2^{*} on a voxel by voxel basis, with home made software (${\Delta}R2^{*}=-ln (S/SO)/TE). For easy visual interpretation, relative RCB color coding with reference to the normal white matter was applied and color rCBV maps were obtained. The findings of perfusion MR image were retrospectively correlated with Cd-enhanced images with focus on the degree and extent of perfusion and contrast enhancement. Results: Two cases of glioblastoma multiforme with rim enhancement on Cd-enhanced Tl weighted image showed increased perfusion in the peripheral rim and decreased perfusion in the central necrosis portion. The low grade gliomas appeared as a low perfusion area with poorly defined margin. In 2 cases of brain abscess, the degree of perfusion was similar to that of the normal white matter in the peripheral enhancing rim and was low in the central portion. All meningiomas showed diffuse homogeneous increased perfusion of moderate or high degree. One each of lymphoma and germinoma showed homogenously decreased perfusion with well defined margin. The central neurocytoma showed multifocal increased perfusion areas of moderate or high degree. A few nodules of the multiple metastasis showed increased perfusion of moderate degree. One radionecrosis revealed multiple foci of increased perfusion within the area of decreased perfusion. Conclusion: The rCBV map appears to correlate well with the perfusion state of brain tumor, and may be helpful in discrimination between low grade and high grade gliomas. The further study is needed to clarify the role of perfusion MR image in the evaluation of brain tumor.

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