The purpose of this study was to determine the effect of electrical stimulation biofeedback on motor learning of quadriceps muscle isometric exercise in 3 patients who have undergone total knee replacement surgery. A multiple baseline design across subjects was used. The electrical stimulation biofeedback was provided with each patient during quadriceps isometric exercise, which last 10 to 14 sessions with 10 repetitions each sessions. After training patients received 4 retention tests. Maximum muscle activity was measured pre- and post- electrical stimulation biofeedback training and retention test to evaluate the effect of biofeedback training. Maximum isometric muscle activity of quadriceps was increased after electrical stimulation biofeedback training in all subjects. The results indicate that a electrical stimulation biofeedback training is a useful method to improve motor learning of quadriceps isometric exercise in total knee replacement.

고온구조용 재료로의 사용이 기대되는 Al3Hf 및 Al3Ta 금속간화합물의 연성을 향상시키기 위하여 SPEX mill을 이용한 기계적합금화시 Ll2 상의 생성거동과 이에 미치는 제 3 원소의 영향을 조사하였다. Al-25%Hf 혼합분말의 경우에는 기계적합금화 6시간부터 Ll2Al3Hf 금속간화합물의 생성되었으나, Al-25%Ta의 경우에는 30시간까지도 D022 Al3Ta 금속간화합물만 생성되었고, Ll2상은 생성되지 않았다. Al-12.5%M-25%MTa(M = Cu, Zn, Mn, Fe, Ni) 조성으로 제 3 원소를 첨가하여 20시간 동안 기계적합금화한 결과 Cu과 Zn의 경우에는 D022 구조 금속간화합물만 생성되었고, Mn, Fe, Ni을 첨가한 경우에는 600˚C에서 등온열처리 후 D0(sub)22상으로 상변태되는 비정질상이 생성된 것으로 보아 이러한 제 3 원소의 첨가는 Cu와 Zn를 첨가한 경우에는 2원계와 마찬가지로 Ll2상과 D022 상간의 에너지 차이를 극복하기 못한 것으로 생각된다 한편, Al-12.5%M-25%Hf조성으로 Cu과 Zn를 첨가한 경우게는 2원계와 마찬가지로 Ll2구조의 금속간화합물이 생성되었으나, Mn, Fe, Ni을 첨가한 경우에는 Al-12.5%M-25%MTa(M = Cu, Zn, Mn, Fe, Ni) 계와 같이 비정질이 생성된 것으로 보아 Ni, Nn, Fe는 AL3X 금속간화합물을 비정질화시키는 경향이 강한 것으로 생각된다.로 생각된다.

There appeared enhancements of the conversion of methane by adding a small amount of CO in the aromatization reaction of methane using the Mo-zeolite catalyst. In case of adding CO2, CO2 changed to CO first, and then the conversion reaction occurred. It was observed by using isotopes as reactants that CO is related to the aromatization reaction of methane.

본 연구의 목적은 중추신경계 반응과 자율신경계 반응을 이용하여 향이 인간에 미치는 영향을 평가하고자 하는 것이다. 본 연구는 20-26세의 남자 10명, 여자 10명으로 구성된 피험자를 대상으로 이루어졌고, 100% Rose oil bulgrian, Lemon oil misitano, Jasmine abs., Lavender oil france (KIMEX.co.ltd) 등 4가지의 향을 사용하여 실험을 수행하였다. 전두엽 (Fz)과 두정엽 (Cz)에서 EEG를 기록하여 대역별 relative power spectrum 값을 구하고 α대역에 대한 β대역의 비(β/α)를 통하여 향에 대한 감성 평가를 시도하였다. 또한 자율신경계 반응은 심전도, 피부온도, 피부저항의 생리신호를 측정하였다. 주관적 평가는 향의 세부적인 이미지를 나타내는 후각 감성 형용사를 이용하여, 양극의 7점 척도 25문항, 단극의 5점 척도 40문항, 그리고 각 향의 전반적인 선호도를 묻는 양극의 7점 척도 2문항으로 구성하여 자극제시 전, 후에 각각 실시하였다. 전체적으로 피험자들은 Lemon을 가장 쾌하고 연하다는 평가를, Rose를 가장 불쾌하며 진하다고 평가하였다. β/α의 비는 쾌하고 연할수록 감소하였고 불쾌하고 진할수록 증가하였다. 또한 심박 변화율과 피부온도는 쾌하고 연할수록 감소하였고, 불쾌할수록 반대 결과를 나타내었다. 결론적으로 쾌하고 연한 향과 불쾌하고 진한 향 사이에 β/α의 비와 자율 신경계 반응의 차이를 관찰할 수 있었다.

The development potential of bovine somatic cells was evaluated using nuclear transfer. A single donor cell derived from fetus of HanWoo(Korean Native Cattle) was selected and deposited into perivitelline space of each enucleated oocyte before electrical fusion and activation. Nuclei of donor cells starved for 7 days (37%) tended to support the development of reconstitute embryo the blastocyst stage better than those of donor cells starved 3, 14 and 30 days. The cleavage rate was significantly lower(P<0.05) in reconstitute embryos derived from large size donor cells(51.2%), than those from small medium size donor cells(76.6 and 73.5, respectively). The developmental rate to blastocyst of reconstructed embryos from medium size donor cells was higher than those from small and medium size donor cells. This study demonstrates that an appropriate culture period for induction into quiescent stage and the size of donor cells effect on the efficiency of nuclear transfer using cultured bovine cells.

To find out the effect of NPK-fertilization level and utilization method of pasture plants on the productivity of dry matter and nutrient of forages in hilly pasture, this experiment was arranged as a split block design with six treatments of 2 mainplots(

The purpose of this stud was to investigate the degree of recognition as well as the consumption pattern of convenience food products, and related factors among 700 mixed Korean college students using written questionnaire. Students of Seoul region showed the significantly lowest rate of recognition at 36.7%. Results also showed that lifestyles have a significant effect on the degree of recognition of convenience foods. The consumption patterns of convenience foods goes as follows: used frequently-18.2%, once in awhile-73.9%, doesn't use-7.9%. The higher the recognition rate, the higher the consumption rate for convenience foods. When compared in terms of residence, students living at home used more refrigerated foods compared to students living outside of the home. Among the total students living outside of the home, students living on their own scored highest of convenience food consumption. In the case of female students living outside the home, respondents living alone and in dormitories scored the highest. Female students living in dormitories were mainly using refrigerated and canned foods, while those living alone consumed more kimbap and 'sa-bal-myun' in convenience stores. Korean college students mainly consumed frozen food, retort food, and kimbap in convenience stores. The college student that believes that 'You eat to satisfy hunger' significantly used more convenience food while those that marked 'maintain health' consumed the lowest showing a great difference between groups. Results showed that the lower the food habit score, the higher the usage score of convenience foods. The food habit score had a negative correlation with the usage of frozen foods, instant food, and convenience store food. When compared individually, packaged 'ramen' and 'sa-bal-myun' scored the highest points of usage. Frozen fried rice and pre-packaged rice scored the lowest points indicating Korean college students do not consider rice a convenience food. Convenience food consumed in convenience stores ranked the highest among places of consumption, compared to places like home or outdoors; showing that convenience foods were used by people with limited time constraints.

Forty-five holstein calves (average liveweight 150kg) were used to investigate the effect of combination of tall fescue and white clover cultivars on liveweight gain and feed efficiency into animal product in pastures. Daily gains per head for 3 years in

The objectives of the present study were improvements in the efficiency of developmental rates to morula and blastocyst stages to produce a large number of genetically identical nuclear transplant embryos. The oocytes collected from slaughterhouse ovaries were matured for 24 h and then enucleated and cultured to allow cytoplasmic maturation and gain activation competence. And then the donor embryos were treated for 12 h with 10 g /ml nocodazole and 7.5 g /ml cytochalasin B to synchronize the cell cycle stage at 26 h after the onset of culture. The blastomeres were transferred into the perivitelline space of the enucleated nocytes and blastomeres and oocytes were fused by electrofusion. The cloned embryos were then cultured in various conditions to allow further development. The age of the recipient(30 vs 40 h) had no significant effect on the fusion rates(82.4 vs 82.1%) and the developmental rates to morula /blastocyst(9.8 vs 11.0%). Effect of Nocodazole treatment on the donor cell cyle synchronization to improve the developmental rates of bovine nuclear transplant embryos was significantly higher than control group(21.4 vs 10.1%, p<0.05). Significant differences were in the percentage of fusion rates(72.9,77.1vs 61.9%) in three types of fusion medium(PBS(+), mannitol and sucrose, p<0.01). The developmental rates of bovine nuclear transplant embryos appeared to be highest in mSOF medium under 5% 0 condition, but no significant differences were found when compared with TCM199-BOEC and mSOF under two different oxygen ratio(5 and 20%).