• Journal of Sericultural and Entomological Science
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• v.24 no.1
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• pp.39-41
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• 1982

1981년에 견직물 Wash and Wear가공 연구를 국제견업협회(I.S.A) 기술분과위원회에서 발표하였든바 의외로 지대한 관심을 보였는데, 금년초 동협회로부터 8개 종류의 견직물을 송부해와 본 연구의 재확인을 하고싶다 하여 기왕이면 방추성도 향상시키는 실험을 해야 되겠다고 결정하고 본 연구에 착수하였다. 본 연구는 따라서 1982년 I.S.A회의에서 다시 발표하게끔 되어 있다. 본 연구로 얻어진 결과는 다음과 같이 요약할 수 있었다. 1. 수지가공으로 방추성이 나쁜 견직물은 20%정도 향상시킬 수 있었다. 2. 수지가공과 Wash and Wear가공을 단일공정으로 해도 Wash and Wear효과가 있었다. 3. 본래 견직물이 고밀도직으로 되었거나 고연견직일 때는 방추성이 본래 좋아서 수지가공을 해도 수％ 밖에 향상되지 못하였다. 4. 견직물조직면으로 볼 때 주자직이나 능직이 평직보다 좋은 방추성을 보였다. 5. 본 연구처리는 염색물의 염색 견뢰도를 향상시키는 효과도 있었다.

• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.187-190
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• 1998

섬유의 후가공공정은 그 목적에 따라 유연가공, 발수가공, 방추가공 등 여러 가지로 분류할 수 있고 실리콘은 이러한 공정에서 유용하게 사용되고 있다. 최근에는 이러한 물성을 복합적으로 갖는 다기능형 섬유의 요구가 커지고 있어 복합가공에 적당한 가공제가 필요하게 되었다. 본 연구에서는 섬유에 발수성, 유연성, 방추성, 내구성을 부여하기 위한 방법으로 불소계발수제와 상용성이 우수한 반응형 실리콘을 선정하고 이를 불소계발수제, 실란가교제등과 혼합(formulation)하여 면섬유에 적용하여 원하는 물성을 얻기 위한 최상의 가공조건을 개발하고자 한다. (중략)

• Journal of Embryo Transfer
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• v.19 no.3
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• pp.283-289
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• 2004

This study was conducted to determine the effects of incubation time after cooling on mouse meiotic spindle and chromosome alignment and the optimal incubation time for their restoration. Oocytes at the metaphase II were obtained from superovulated mice. Control oocytes were held at 37$^{\circ}C$ during the experiment. Oocytes were rapidly cooled to $0^{\circ}C$, held for 30 minutes, warmed and incubated at 37$^{\circ}C$ for 5, 15, 30, 60 and 120 minutes, respectively. The morphological features of spindle and chromosomes in oocytes were evaluated by immunofluorescent staining. Meiotic spindle of control oocytes exhibited a normal-looking bipolar configuration(barrel-shaped) and highly fluorescent microtubles. The chromosomes were clustered in a discrete bundles at metaphase plate. Disassembly of meiotic spindle and chromosome dispersion were occurred immediately after chilling of oocyte. Fluorescence intensity index(FIS), normal chromosomes aligned and normal spindle configuration were compared according to incubation time at 37$^{\circ}C$. Restoration of a barrel-shaped spindle and normal chromosome alignment was occurring after 5 minutes incubation at 37$^{\circ}C$, improved as a incubation time increased, and decreased gradually after 120 minutes incubation(P<0.05). The optimal incubation time for restoration of meiotic spindle and chromosomes in cooled oocytes was 60 minutes.

• Proceedings of the Korean Fiber Society Conference
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• 1996.10a
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• pp.289-459
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• 1996

• Horticultural Science & Technology
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• v.33 no.2
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• pp.155-165
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• 2015

Well-feathered (over 10 feathers) 'Fuji'/M.9 apple trees were planted at $3.0{\times}1.0m$ and trained to slender spindle with 2.5 m height or to tall spindle with 3.5 m height, and the vegetative growth, productivity, and fruit quality of two training systems were compared for 8 years. The canopy volume of the tall spindle trees surpassed that of the slender spindle trees 4 years after planting and was 25% larger than that of the slender spindle trees 5 years after planting. The accumulated yield over 8 years for the tall spindle system was 14% higher than that of the slender spindle system. Alternate bearing and incidence of marssonina blotch were observed in both treatments after 5 years of planting. There was often vegetative imbalance in the trees however, the degree of yield loss and vegetative imbalance of the tall spindle trees was lower than those of the slender spindle trees. Soluble solid content and fruit red color of the tall spindle trees were higher than that of the slender spindle trees in 5 year after planting, resulting from increased light penetration in the canopy due to even distribution of lateral branches and from fruit bearing in different height locations of the trees. In conclusion, increasing the tree height to about 3.5 m using slender spindle 'Fuji'/M.9 apple trees planted with over 333 trees per 10a led to better light penetration, yield and fruit quality compared to a conventional wide training system with the slender spindle.

• Korean Journal of Animal Reproduction
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• v.25 no.3
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• pp.287-292
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• 2001

Selection of oocyte cryopreseivation method is a prerequisite factor for developing an effective bank system. To develop an effective vitrification method, we examined whether damages in spindle and chromosome morphology induced by vitrification. Intact cumulus-enclosed oocytes were vitrified with DPBS with 5.5 M ethylene glycol and 1.0 M sucrose, and loaded onto eletron microscopic copper grid for storing in liquid nitrogen. Intact vitrified and thawed oocytes were immunostaining for tubulin and karyotying for chromosome. Vitrfied and thawed oocytes had a higher rate of chromosome (32.8% vs. 19.6%) and spindle (32.3% vs. 20.2%) abnormalities compared with fresh oocytes. Mouse oocytes after vitrification at the mature stage showed increased incidence of chromosomal and spindle abnormalities.

• Korean Journal of Human Ecology
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• v.9 no.4
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• pp.483-489
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• 2000

The purpose of this study is to verify the effect of cellulase treatment on crease resistance of cotton. Cotton fabrics was treated with cellulase under different concentration at $50^{\circ}C$ for 40 min. Also to compare the effect of DMDHEU treatment, DMDHEU treatment was conducted before and after cellulase treatment, also with cellulase. Weight loss, crease resistance and tentile strength of each samples were measured and compared. Maximum weight loss showed at 1g/l con. with 40 min. treatment. Cellulase enzyme treatment was more effective than DMDHEU in the crease resistance and tensile strength. Crease resistant of cotton which treated under different condition with cellulase and DMDHEU showed in the order of cellulase+DMDHEU> cellulase> DMDHEU treatment. Also, tensile strength showed in the order of cellulase> cellulase+DMDHEU> DMDHEU. Among those treatment conditions, condition which treated with cellulase considered more effective to increase crease resistance while keeping tensile strength too.

• Investigative Magnetic Resonance Imaging
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• v.2 no.1
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• pp.83-88
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• 1998

Purpose : Authors correlated the three-dimensional time-of-flight MRA signal intensity characteristics and flow profile simulated by computer in an experimental flow phantom model. Materials and Methods : The three-dimensional time-of-flight MRA was performed in a fusiform flow phantom and analyzed the flow signal. computer assisted flow simulation was performed in same flow geometry. The MRA signal intensity and flow velocity distribution and direction was compared. Results : The flow was depicted as homogeneous signal internsity in inlet and outlet area and inhomogeneous signal intensity in fusiform area. Typically, the flow was depicted as target appearance in transition area to outlet. Whereas mean signal internsity decreased slowly in fusiform area, it rapidly dropped and resumed in transition area to outlet. In computer assisted flow simulation, Whereas there were flow velocity decrease and flow direction change to peripheral in entrance to fusiform area, ther were rapid flow velocity resuming and flow direction change to central in transition area to outlet. Conclusion : The signal loss and target appearance in transition area to outlet is characteristic of fusiform flow. These signal changes correlate with abrupt flow velocity and direction change well.

• Journal of Sericultural and Entomological Science
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• v.28 no.1
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• pp.61-65
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• 1986

This work was to realize the wrinkling behavior of spun silk fabric. The results were obtained through the various conditions such as temperature, wrinkling time, wrinkling load and crease recovery time. The obtained results were summerized as follows : 1. Wrinkle recovery of the silk fabric was decreased with the increase of temperature, humidity and the influence of humidity was superior to the influence of temperature. 2. The change of wrinkle recovery depending on the wrinkle recovery time showed the experimental equation (Y=a+b lnT). The wrinkle recovery increased with the lapse of wrinkle recovery time but arrived at the equilibrium position about 300 sec. 3. The value "K1" of the silk fabric in the "Voigt model" was inferior as compared with the polyester and Nylon. 4. The change of wrinkle recovery depending on the wrinkling time was decreased with the lapse of wrinkle recovery time but the change of the value "a" could not be fined. 5. The change of wrinkle recovery depending on the wrinkling load was same as above 4.

• Proceedings of the KSAR Conference
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• 2001.03a
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• pp.75-75
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• 2001

유리화 동결법은 동결중 ice crystal의 형성이 이루어지지 않으므로 난자의 동결보존을 위한 유용한 동결방법이다. 이전의 연구에서 마우스의 난자를 ethylene glycol과 electron microscope grid를 이용한 유리화 동결법으로 동결 융해한 결과 기존의 slow freezing 방법에서보다 높은 생존율과 배발달율이 나타남을 관찰하였다. 그러나 동물과 인간 난자를 이용한 연구를 통하여 난자의 경우 동결 융해후 염색체에 부착되어 있는 미세소관인 방추사가 온도의 변화에 매우 민감하여 염색체 이상성이 증가되는 것이 보고되었다. 이에 본 연구에서는 성숙난자를 유리화동결법에 의해 동결 융해후 난자의 염색체와 방추사의 이상성이 증가되는지 알아보고자 본 실험을 수행하였다. ICR mouse의 성숙란을 채취하여 연구목적에 따라 fresh한 대조군과 동결음해 시킨 실험군으로 분류하였다. 동결방법은 난자를 1.5 M ethylene glycol (EG)에 2분 30초간 노출 시킨후 5.5 M EG와 1M sucrose가 첨가된 동결액에 20초간 노출시킨 후 Grid에 난자를 부착시킨 후 직접 액체질소에 침지하여 동결하였다. 동결후 난자는 5단계로 융해를 실시한 후 생존된 난자는 tubulin 항체를 이용한 immunostaining 방법으로 방추사의 이상성을 관찰하였고, 염색체는 난자를 고정 후 10% Giemza로 염색 후 염색체의 수적인 이상성을 관찰하였다. 염색체 분석결과 염색체 이상 빈도는 대조군의 경우 19.6%, 동결융해군은 32.8%로 관찰되었다. 또 방추사의 이상빈도는 대조군의 경우 20.2%, 동결 융해군은 32.3%로 관찰되어 동결 융해후의 난자에서 염색체와 방추사의 이상 빈도가 증가됨이 관찰되었다.찰되었다. 배아이식후 대조군과 실험군에서 각각 2 마리가 임신이되어 정상적인 산자를 분만하였다. 따라서 항동해제에 taxol의 첨가는 동결 융해후의 난자의 배발달율을 증진시킬 수 있었다..8%로 나타나 난할율 및 배반포 발생율에 있어서 융합조건에 따라 큰 차이는 없었으나 1.9㎸/cm, 30$\mu\textrm{s}$ 2회의 조건이 다른 조건들에 비하여 유의적으로 낮았다. 따라서, 체세포와 수핵란 세포질간의 융합율과 배반포 발생에 미치는 영향은 전압보다는 시간에 더 크게 받음을 알 수 있었으며, 이와 같은 결과에서 융합시 시간을 오래 주는 것보다 전압을 높이는 것이 수핵난자의 세포질에 상해를 줄이고 이후 배반포 발생에 유리할 것으로 사료되었다.면에서도 더욱 더 활발할 것으로 기대된다. 배란후 72시간째에 초음파진단기를 이용하여 난소의 난포발달을 조사한 결과 , 대조구와 bFF처리구에 비해 AI처리구에서 발달난포가 유의적으로 많은 것을 확인하였다. 이상과 같은 결과로, Anti-inhibin serum은 한우 자체에서 분비하는 Inhibin을 특이하게 억제하여 Inhibin에 의해 억제되는 FSH분비가 촉진됨으로써 난포발달과 estrogen의 농도가 촉진되는 것으로 사료되어 anti-inhibin serum이 한우의 과배란유기 효과가 있는 것으로 사료된다.정량 분석한 결과이다. 시편의 조성은 33.6 at% U, 66.4 at% O의 결과를 얻었다. 산화물 핵연료의 표면 관찰 및 정량 분석 시험시 시편 표면을 전도성 물질로 증착시키지 않고, Silver Paint 에 시편을 접착하는 방법으로도 만족한 시험 결과를 얻을 수 있었다.째, 회복기 중에 일어나는 입자들의 유입은 자기폭풍의 지속시간을 연장시키는 경향을 보이며