북극 스발바드 콩스피오르덴 해역에서 L 밴드 PALSAR 데이터를 이용한 눈과 부빙에 의한 다중편파 산란특성 해석

정정수,양찬수,Kazuo Ouchi,Kuzaki Nakamura 한국해양과학기술원 2011 Ocean and Polar Research Vol.33 No.1

This study describes measurements of fast ice recorded on May 23, 2009, in Kongsfjorden (translated as ‘Kongs Fjord’), an inlet on the west coast of Spitsbergen in the Svalbard Archipelago. Seasonal fast ice is an important feature for Svalbard fjords, both in relation to their physical environment and also the local ecosystem, since it grows seaward from the coast and remains in place throughout the winter. Ice thickness, snow, ice properties, and wind speed were measured, while SAR (Synthetic Aperture Radar) data was observed simultaneously observed two times from ALOS-PALSAR (L-band). Measured ice thickness was about 25-35 cm while the thickness of ice floe broken from fast ice was measured as 10-15 cm. Average salinity was 1.9-2.0 ppt during the melting period. Polarimetric data was used to extract H/A/alpha-angle parameters of fast ice, ice floe, snow and glacier, which was classified into 18 classes based on these parameters. It was established that the area of fast ice represents surface scattering which indicates low and medium entropy surface scatters such as Bragg and random surfaces, while fast ice covered with snow belongs to a zone of low entropy surface scattering similar to snow-covered land surfaces. The results of this study will contribute to various interpretations of interrelationships between H/A/alpha parameters and the wave scattering Phenomenon of sea ice.

q진 LCZ 수열군의 일반화된 확장 생성 방법

정정수,김영식,장지웅,노종선,정하봉 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.11

[1]에서 LCZ 수열군의 2배 확장을 제안하였다. 본 논문에서는 [1]에서의 2배 확장방법을 일반화하는 새로운 확장방법을 제안한다. 이 생성방법을 사용하면 인수가 (수식)인 q진 LCZ 수열군은 인수가 (수식)인 q진 LCZ 수열군이 된다. 이 때, p는 소수이고 p는 q의 약수다. 특히 (수식)일 때, 확장된 q진 LCZ 수열군의 인수는 (수식)이 된다.

체중 , 성별 및 열량제한이 돼지의 Lipoprotein Lipase(LPL)의 유전자발현과 LPL 의 활성도에 미치는 영향

정정수,이재준,김진걸 한국축산학회 1998 한국축산학회지 Vol.40 No.6

The current study was undertaken to determine the effects of increasing body weight, sex, and energy restriction on the LPL mRNA abundance and LPL activity of adipose tissue in the finishing pigs. Serum lipoprotein pattern. triglyceride concentrations and their correlation with LPL activity were also investigated. Serum total cholesterol(C). HDL-C. LDL-C and HDL-C/T-C ratio were not significantly affected by body weight. sex or energy restriction. The triglyceride concentration increased with increasing body weight, being greater in gills than in boars(p$lt;0.05). The serum triglyceride concentration of full-fed pigs tended to be higher than that of energy-restricted pigs. Heavier pigs showed higher LPL activity than lighter pigs(p$lt;0.05), gills showing higher LPL activity than boars. and full-fed pigs showing higher LPL activity than energy-restricted pigs. Gills showed higher LPL mRNA abundance than boars, full-fed pigs showing higher LPL mRNA abundance than energy-restricted pigs. However. there was no significant difference between heavier and lighter pigs in the LPL mRNA abundance. The LPI_ activity was correlated with the triglyceride concentration, but not with the HDL-C, in individual experiments except the energy-restriction experiment. These results suggest that LPL is an important indicator for lipogenesity in pigs.

Human Growth Hormone(hGH)과 Porcine GH(pGH)가 쥐와 돼지의 지방합성에 미치는 영향

정정수,이재준,정동조,권순창 한국축산학회 1999 한국축산학회지 Vol.41 No.4

The current study was undertaken to investigate he effects of human growth hormone(hGH) and porcine GH(pGH) on lipogenesis of adipose tissues from the rats and growing pigs. For the measurement of lipogenesis, epididymal fat tissue was taken from the rats after being killed and for the same purpose the backfat tissue was biopsyed from the pigs. Lipogenesis was determined by the amount of glucose converted to the total lipid. Initially, we investigated the effects of incubation time and glucose concentration on lipogenesis of the epididymal fat tissue of the rats for establishing the optimum condition. The results showed that lipogenesis was linearly increased as the incubation time increased (40, 80 and 120 min) and the total amount of lipogenesis was the same between 5mM and 20mM glucose in the KRB buffer. In in vitro study, adipose tissues were exposed to the varying concentrations of hGH during 48h culture; before the tissues were incubated in the KRB buffer for lipogenesis measurement. Human growth hormone added into the adipose tissue culture did not affect the lipogenesis of epididymal fat tissue of the rats. In in vivo study where the rats were injected daily with 200㎍ of hGH for 10 days, hGH added into the epididymal fat tissue culture did not affect the lipogenesis either. However, pGH as well as hGH contained in the culture media decreased the lipogenesis of the adipose tissue from growing pigs in dose-dependent manner. These results indicated that hGH decreased lipogenesis in the pigs, but not in the rats.

급이방법이 포유모돈의 번식성적 및 자돈의 성장에 미치는 영향

정정수,Jeong, Jeong-Su 대한양돈협회 1998 養豚 Vol.20 No.5

국산박류의 사료적 가치에 관한 연구 7 . 산란계에 대한 국산박류비교시험

정정수,한인규 ( Chung S . Chung,In K . Han ) 한국축산학회 1978 한국축산학회지 Vol.20 No.1

This experiment was conducted to compare the nutritive values of locally produced oil meals for laying hens from 21 weeks to 46 weeks of age. Four hundred White Leghorn hens of Hisex strain were divided into two groups, i.e. group A (partial substitution for soybean oil meal) and group B (complete substitution for soybean oil meal). The group A and B were splited into 5 treatments, namely, soybean oil meal (SBOM), perilla oil. meal (POM), sesame of meal (SOM), rapeseed oil meal (ROM) and corn gluten meal (CGM), respectively. The results obtained are summarized as follows. 1. Hen-day egg production rate of SBOM, SOM, ROM, CGM and POM treatment was 83.2, 81.5, 81.2, 80.6 and 80.2%, respectively when these oil meals were partially substituted for soybean oil meal, and that of SBOM, CGM, POM, SOM and ROM treatment was 80.9, 80.7, 78.9, 76.4 and 76.1%, respectively when the experimental meals were completely substituted. It is clear that soybean oil meal fed chicks showed the best results in egg production. The hen-day egg mass of SBOM, CGM, POM, ROM and SOM treatment was 48.3, 46.6, 46.2, 46.1 and 46.3 g in the group A and 46.7 45.5, 45.1, 43.1 and 42.2 g in the group B, respectively. Average egg size of SBOM fed treatment was 58.1 g in the group A and 57.7 g in the group B indicating that the egg size for SBOM treatment was the largest among treatments. Data also revealed that the egg size of 56.7g for ROM treatment in the group A and 55. 2g for SOM treatment in the group B were the smallest. Somewhat more shelless eggs were produced by ROM treatment than by other treatments. In the group B, the correlation coefficiency between the body weight gains during the growing period and the hen-day egg mass during the laying period was found to be +0.91. 2. Egg yolk color was somewhat improved by feeding corn gluten meal than the other vegetable protein feeds. Egg shell was somewhat thinner for ROM treatment than other treatments. 3. In general, the body weight gain during the laying period, as was the same during the growing period, was significantly (P$lt;0.05) higher for SBOM and CGM fed chicks and lower for SOM treatment. Data indicated that the mortality for CGM treatment was highest and that for SBOM treatment was lowest. 4. When the mean values of major economic characteristics in the group A and B were summarized, it was apparent that the nutritive values of locally produced oil meals could be improved when these were used with soybean oil meal. $lt;표생략$gt;

국산박류의 사료적 가치에 관한 연구 6 . 난용계 중·대추에 대한 국산박류비교시험

정정수,한인규 ( Chung S . Chung,In K . Han ) 한국축산학회 1978 한국축산학회지 Vol.20 No.1

This experiment was conducted to compare the nutritive values of locally produced oil meals for egg-type growers from 6 weeks to 21 weeks of age. Six hundred White Leghorn chickens of Hisex strain were devided into two groups, i.e. group A (partial substitution for soybean oil meal) and group B (complete substitution for soybean oil meal). The group A and B were splited into 5 treatments, namely, soybean oil meal (SBOM), perilla oil meal (POM), sesame oil meal (SOM), rapeseed oil meal (ROM) and corn gluent meal(CGM), respectively. The results obtained are summarized as follows. 1. There were no differences in body weight gain, feed intake and feed efficiency during the growing period of 6-21 weeks among treatments. The body weight gains obtained during the total growing period including the starter period (Exp` 5) of CGM, SBOM, POM, SOW and RoM fed chicks were 1604.0, 1603.0, 1582.7, 1542.6 and 1513.6g in the group A and 1578.8, 1568.3, 1518.8, 1476.2 and 1484.6g in the group B, respectively. The mean values of body weight gains during the total growing period in the group A and B were 1569.1g, 1525.3g and of feed efficiency in the group A and B were 7.08, 7.25, respectively. 2. No differences in nutrients utilizability during the growing period of 6-21 weeks was observed among treatments. It was found that the rate of nitrogen retention was somewhat decreased gradually toward the maturity of chicks progressed.

유전자재조합 pST 투여가 돼지의 성장생산성 및 육질에 미치는 영향

정정수,장병선,권관,최명자,최정은,제훈성,김남중 한국축산학회 1997 한국축산학회지 Vol.39 No.5

The current study was undertaken to evaluate the effects of a locally-produced recombinant porcine somatotropin (pST) on growth perfermance and pork quality of finishing pigs. A total of 32 barrows weighing average 61kg were employed for the 6-week growth trial : 8 barrows were allocated into the control group (CONT): 8 barrows into the slow release-low dose pST group (SR-L); 8 barrows into the solve release - high dose pST group (SR-H); 8 barrows into the daily pST group(DAILY). CONT pigs received no pST. SR-L and SR-H pigs were treated with pST twice during 6 week trial(Each dose contained the pST equavalent to 50 ㎍ and 100 ㎍ per day, respectively). DAILY pigs received 100 ㎍ pST/㎏ B W daily. All pigs were fed a commercial feed containing 0.87% lysine ad lib. There was no significant difference in average daily gain among treatments. Feed/gain was reduced by 20% in DAILY (3.09 vs 3.85; p$lt;0.05) and 11% in SR-H (3.43 vs 3.84; p$lt;0.05) compared to the CONT. Backfat of the DAILY group was 20% thinner than that of the CONT and loin eye area was wider by 17% (p$lt;0.05) in DAILY group, compared to the CONT. The extent of the improvement in growth perfermance of SR groups was less (p$lt;0.05) than that of DAILY group. There were no significant differences in the color, juiciness, flavor and texture of pork among treatments, with the tenderness of DAILY group being less desirable compared to that of CONT group. Moisture content of DAILY group was higher (p$lt;0.05) than that of CONT group, while lipid content was reduced in DAILY group. SR group showed the middle values between CONT and DAILY group in most criteria on growth performance and pork quality investigated. These results indicated that the recombinant pST produced by LG Chem., Ltd., Korea stimulated growth performance in growing pigs and did not show any major negative effects on pork quility, suggesting that slow release pST could be used as a growth stimulant for growing pigs.

우리나라의 工業化 過程에서 나타난 勤勞者 疎外와 對策

정정수 경기대학교경영대학원 1991 最高經營者課程 經營硏究 Vol.2 No.-

Exploring Natural Variations in eIF4E and Screening for Potyviral Resistance in Diverse Nicotiana Species

정정수,염인화 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.5

The eukaryotic translation factors, including eIF4E which plays a major role in host translation initiation by recruiting messenger RNAs to the ribosomal complex, have repeatedly been identified as host factors required for viral infection. The cDNA sequence of eIF4E and eIF(iso)4E from 16 different genotypes, including 8 Nicotiana species and 8 Nicotiana tabacum cultivars, were determined in this study. The consensus Nicotiana eIF4E cDNA is 669 nucleotides long and codes for 222 amino acids. A high level of similarity was detected among eIF4E proteins of Nicotiana species sharing over 97% nucleotide identity and 95% amino acid identity in most cases. The eIF4E from tobacco (Nicotiana tabacum) shares a protein identities of 75.7% with pepper-eIF4E, 74.3% with tomato-eIF4E,73.4% with potato-eIF4E, 73.1% with melon-eIF4E, 72.6% with cucumber-eIF4E, 73.1% with lettuce-eIF4E, and 71.5% with pea-eIF4E. In the case of eIF(iso)4E, the cDNA is 603 nucleotides long and codes for 200 amino acids. In this study, we investigated variations which exist in eIF4E or eIF(iso)4E, and attempted to correlate the variations which exist in these translation initiation factors with the resistance phenotype against several potyviruses in Nicotiana plants. We detected amino acid substitutions at the 18 positions for eIF4E and substitutions at the 11positions for eIF(iso)4E. We attempted to correlate the resistance against Potato virus Y (PVY) or Pepper mottle virus (PepMoV) with the natural variations detected within the Nicotiana genotypes. However, no variation responsible for the gains of potyviral resistance was detected in this study. The result suggests that the potyviral resistance observed in Nicotiana species against PVY and PepMoV was conferred by an unknown resistance factor other than eIF4E or eIF(iso)4E, unlike general potyviral resistance observed in other plant species of the Solanaceae family.