• Title/Summary/Keyword: Cow

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Late Tremadocian Radiolarian Faunas and Biostratigraphy of the Cow Head Group, Western Newfoundland, Canada (뉴파운드랜드 Cow Head Group에서 발견한 후기 Tremadocian 방산충 군집과 생층서대 재정립에 관한 연구)

  • Won, Mun-Zu;Iams, William J.;Reed, Katherine M.
    • Journal of the Korean earth science society
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    • v.28 no.4
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    • pp.497-540
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    • 2007
  • Late Tremadocian radiolarian faunas were first recovered from the Cow Head Group, Newfoundland, Canada. Three faunal assemblages were recognized, one from Martin Point and two from Western Brook Pond in Gros Morne National Park. These radiolarian faunas include six families, 11 genera, and 26 species. In these faunas, six genera (Archeoproventocitum, Cowheadia, Neopalaeospiculum, Protospongentactinia, Protoproventocitum and Westernbrookia) and 17 species (Archeoproventocitum nudiformum, A. retiformum, Aspiculum densum, A. jamesi, A. multistratum, A. gigantium, Cowheadia duplextesta, Neopalaeospiculum densum, N. laxum, N. transformum, Pararcheoentactinia stilla, Protospongentactinia spongiosa, Protoproventocium nazarovii, P. aitchisoni, Westernbrookia cancella, W. diversa, and W. ovata) are new. Late Tremadocian faunas are characterized by the appearance of proventocitiids and diversification of aspiculumids and reduction of protoentactiniids and echidniniids that had flourished in the early Tremadocian faunas. An examination of the biostratigraphic range of co-occurring conodonts indicates that the radiolarian faunas described here belong to the late Tremadocian, from the Lower Diversity Interval through the M. dianae Zone to the lower P. proteus Zone. With the recovery of conodonts of the R. manitouensis Zone from other localities in the study area, the correlation among Martin Point, Western Brook Pond, Broom Point, and St. Paul's Inlet strata has became more precise. Also, the middle and late Tremadocian Cow Head Group can be subdivided into the R. manitouensis Zone, the Low Diversity Interval, and the M. dianae Zone of North America. The lower P. proteus Zone of the latest Tremadocian for northern Europe is recognized in the Western Brook Pond South section.

Characteristics of Cow Milk and Goat Milk Yogurts Fermented by Streptococcus thermophilus LFG Isolated from Kefir (Kefir에서 분리한 Streptococcus thermophilus LFG를 이용한 우유 및 산양유 요구르트의 품질 특성)

  • Lim, Young-Soon;Lee, Si-Kyung
    • Food Science of Animal Resources
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    • v.33 no.6
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    • pp.787-795
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    • 2013
  • This study was carried out to investigate the characteristics of goat and cow milk yogurts containing high-exopolysaccharide fermented by Streptoccous thermophilus LFG isolated from kefir. The pH of cow milk yogurt was higher than that of goat milk yogurt. The contents of lactic acid was greater in goat milk yogurt (743.9-1043.8 mg/100 g) than in cow milk yogurt (441.6-709.9 mg/100 g). The numbers of survival lactic acid bacteria were the greatest in goat milk yogurt fermented by Str. thermophilus LFG. Viscosity was greater in cow and goat milk yogurts cultured by Str. thermophilus LFG than in yogurts by Str. thermophilus TH3. Syneresis of yogurt fermented by Str. thermophilus LFG was 9.6-16.1% and 28.2-31.8% in yogurt fermented by Str. thermophilus TH3 after 10 d storage at $4^{\circ}C$. Flavor compounds identified from goat milk were acetone, ethylbutanoate, ethyl-3-methylbutyrate, ethyl-2-butenoate and ethylhexanoate, and those from cow milk were ethylbutanoate, acetone, 2-heptanone and acetoin. Flavor compounds detected from goat milk and cow milk yogurts were acetic acid, butanoic acid, butanol, diethylcarbinol, acetone, diacetyl, decane, 2-methyl-3-pentanone, hexanal, 2-heptanone, acetoin, benzaldehyde, dimethyldisulfide, and dimethyltrisulfide. In sensory evaluation, overall preference and texture values were higher in goat milk yogurt fermented by Str. thermophilus LFG than in cow milk yogurts and the yogurt fermented by mixed culture resulted in the highest score.

Studies on Herbage Utilization by Grazing Dairy Cows under Strip Grazing II. Herbage intake and milk yield affected by levels of daily herbage allowance (대상방목 체계하에서 고능력 착우유에 의한 초지이용율에 대한 연구 II. 일당 채식허용량의 수준에 따른 채식량 및 산유량)

  • 김태환;김병호
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.14 no.2
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    • pp.110-119
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    • 1994
  • Measurements of hehage intake and milk yield were made on high yielding dairy cows, which were strip-grazed on Loliurn perenne sward at three levels of herbage allowance in three experimental periods. The contents of nitrogen, chrome and ash in the faeces slightly decreased with the progress of growth period of experimental sward, and the decrease of herbage allowance. There were small difference in herbage digestibility among periods or the levels of herbage allowance with falling from 82.7% to 79.1% from period 1 to period 3 and from 81.6% to79.9% from high to low level of herbage allowance. Daily herbage intake was 15.8 and 15.9 kg OMIcow at the high and medium levels of hecbage aljowance, but reduced significantly to 14.6 kg OM/cow at the low level. Herbage intakes in three periods were shown a slight decrease. Daily milk yield in terms of 4% FCM significantly decreased from 23.6 to 20.6 kg/cow from period 1 to period 3. Milk yield at the high and medium levels of herbage allowance were 23.5 and 22.2 kg/cow at the low level of herbage allowance. The highly significant (P<0.01) correlations between the level of herbage allowance and herbage intake (r=0.88), or milk yield (r=0.81) were obtained.

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An Efficient Snapshot Technique for Shared Storage Systems supporting Large Capacity (대용량 공유 스토리지 시스템을 위한 효율적인 스냅샷 기법)

  • 김영호;강동재;박유현;김창수;김명준
    • Journal of KIISE:Databases
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    • v.31 no.2
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    • pp.108-121
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    • 2004
  • In this paper, we propose an enhanced snapshot technique that solves performance degradation when snapshot is initiated for the storage cluster system. However, traditional snapshot technique has some limits adapted to large amount storage shared by multi-hosts in the following aspects. As volume size grows, (1) it deteriorates crucially the performance of write operations due to additional disk access to verify COW is performed. (2) Also it increases excessively the blocking time of write operation performed during the snapshot creation time. (3)Finally, it deteriorates the performance of write operations due to additional disk I/O for mapping block caused by the verification of COW. In this paper, we propose an efficient snapshot technique for large amount storage shared by multi-hosts in SAN Environments. We eliminate the blocking time of write operation caused by freezing while a snapshot creation is performing. Also to improve the performance of write operation when snapshot is taken, we introduce First Allocation Bit(FAB) and Snapshot Status Bit(SSB). It improves performance of write operation by reducing an additional disk access to volume disk for getting snapshot mapping block. We design and implement an efficient snapshot technique, while the snapshot deletion time, improve performance by deallocation of COW data block using SSB of original mapping entry without snapshot mapping entry obtained mapping block read from the shared disk.

Characteristic study and isolation of Bacillus subtilis SRCM 101269 for application of cow manure (우분 적용을 위한 Bacillus subtilis SRCM 101269의 분리 및 특성 연구)

  • Jeon, SaeBom;Oh, HyeonHwa;Uhm, Tai-Boong;Cho, Jae-Young;Yang, Hee-Jong;Jeong, Do-Youn
    • Korean Journal of Microbiology
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    • v.52 no.1
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    • pp.74-83
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    • 2016
  • Bacillus subtilis SRCM 101269 having safety and amo gene isolated from Korean traditional fermented food and their investigated characterization to apply the cow manure such as cellulase and xylanase activities, 16S rRNA sequencing, and ability of removal of livestock manure odor. Cow manure application results for the removal of livestock manure odor, the ammonia gas was reduced more than two-folder compared to the control group after 6 days, and reduced to less than 10 ppm after 9 days. In the case of cow manure added fowl droppings and other wood-based mixture components, ammonia gas maintained constant after 3 days of fermentation. However, in the case of sample inoculated B. subtilis SRCM 101269, ammonia gas reduced in course of fermentation time, and concentration of hydrogen sulfide also reduced for 65 ppm. Changes of nitrite concentration according to fermentation time no showed different for cow manure, however nitrite concentration in mixed livestock manure increased when compared to control. And then sulfate concentration in cow manure decreased, and no showed different when compared to the initial fermentation. No apparent change of sulfate concentration in mixed livestock manure detected. Through the previously studies, B. subtilis SRCM 101269 has high potential in industrial application manufacturing the cow manure as removal of livestock manure odor.

A study on cow's milk and nursing method in relation to iron deficiency (모유 수유아와 생우유를 먹인 아기의 철분결핍에 관한 연구)

  • Kang, Ji Ung;Jin, So Hee;Choi, Kyung Dan;Jang, Young Taek
    • Clinical and Experimental Pediatrics
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    • v.49 no.2
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    • pp.144-149
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    • 2006
  • Purpose : This study investigated the breast-feeding period, the milk bottle-using period, the age of cow's milk, introduced and the amount of cow's milk consumed in relation to anemia. Methods : Over the course of three years, 930 children(12 months to 36 months) who went to the Presbyterian Medical Center, Chonju, Korea were tested for anemia and their parents were surveyed for a history of their children's milk consumption. Results : Anemia appeared more likely between 30 months and 36 months, however, iron-deficiency anemia appeared more likely between 18 months and 23 months. Anemia, low serum ferritin levels and iron-deficiency anemia appeared more likely in children breast fed less than 6 months and greater than 12 months. Although there were survey reports of side effects with cow's milk, including constipation, diarrhea and skin rash, the milk bottle-using period, age of cow's milk introduced and amount of cow's milk consumed had no connection with anemia, serum ferritin levels and irondeficiency anemia. Conclusion : The data showed no correlation between the cow's milk, milk bottle-using period and iron deficiency. But the data revealed that iron deficiency anemia is more likely in children who are breast fed for less than 6 months and over 12 months, so we suggest careful attention during this period to prevent iron deficiency anemia.

Co-treatment of Sewage Sludge and Cow Manure by Vermistabilization (Vermistabilization에 의한 하수 슬러지와 가축분뇨의 병합처리)

  • 손희정;김형석
    • Resources Recycling
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    • v.7 no.3
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    • pp.52-57
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    • 1998
  • The objective of this study was to investigate the effect of cow manure as additive material on the ripening of sewage s sludge for vermistabiJization. The changes of the waste properties by ripening for 50days were observed as a function of the v various mixture ratios of sewage sludge ‘and cow manure. The pH values of the mixture wastes decreased from 7.5-7.67 to 6_ 9~7.2 by the ripening for 50days, and the mixture ratio made dIfferent pH values. The initial value of oxidation-reduction p potential (Eh) of the mixture waste was a negative (-) value indicating an unfavorable condition for earthworm after, but the v values of Eh increased with the opening time. The Increase rate at Eh value was prop$\alpha$rtional to the mixture ratio of cow m manure. The value of alkalinity was also changed into the favorable range for earthworm after 50days except for non-use of 1 the cow manure When the mixture ratio of the cow manure increased from 10% to 30%, the growth of earthworms increased h from 63.7% to 88.3 % tor the survival rate, 265% to 321% for the liveweight increasing rate and 66.7_7% to 91% for hatching f rate of the cocoons. It can be concluded that the proper content of tbe cow manure in the sewage sludge to ensure effective v vermistabilization was over 20%, when the mixture was ripened during 50 days. The quantity of ingestion and 며ectian at 20%-30% was found to be O.15--i.L18g sludge and 0 1l--O.14g solid per capacity earthworm per day, respectively.

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A Case Report on Trephing Opening for Treatment of Empyema in Dairy Cow (젖소의 전두동축농증 치료를 위한 원거술시술 일례)

  • Kwun Hae Byeong
    • Journal of the korean veterinary medical association
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    • v.15 no.8
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    • pp.463-466
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    • 1979
  • In treatment of empyema of frontal sinus in a dairy cow, modified trephing method was applied and aquired satisfactory drainage of pus and discharge from frontal sinus. Methods of trephing opening applied were as follows : 1. Site of trephing opening for

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