• Animal Systematics, Evolution and Diversity
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• 제30권2호
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• pp.59-64
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• 2014

Three species of the genus Sciota Hulst, 1888 are recognized from Northeast China: Sciota cynicella (Christoph, 1881), Sciota fumella (Eversmann, 1844), and Sciota adelphella (Fischer von R$\ddot{o} $slerstamm, 1836), of which Sciota cynicella (Christoph, 1881) is reported for the first time from China. This species can be distinguished from congeners by the gray color of basal area, the straight antemedial line and the distinct postmedial line on the forewing; by the stout aedeagus in male genitalia. In this study, a key to Northeastern Chinese species of genus Sciota is presented, and the illustrations of adults and genitalia are also provided.

• 수산해양기술연구
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• 제22권2호
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• pp.1-6
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• 1986

Even though it is well known that the tidal current in the East China Sea rotates clockwise, few report can be found about the precise pattern of it. To furnish some information available for the stow net fishermen, the author carried out the observation over 235 semidiurnal tidal cycle to investigate the pattern of the set and the rate of tidal current in the Korean fishing section 250 and 494, by reading the current meter and by tracing the corner reflectors with radar onboard the anchored obsen'ation vessel, from May 12, 1984 through February 27, 1986. The results obtained are as follows: 1. The mean semidiurnal tidal cycle was 12 h 20 m during spring tide, and 12 h 30 m during neap tide. 2. The mean interval from the calculated time of high water until the current began to set north was 2 h 30 m and 2 h 15 m in the fishing section 250 and 494 respectively, and the mean interval from the time of low water current began to set south was about 2 h 0 m in both sections. 3. In comparison of the occupied times to vary the set from one of 8 principal bearing points to the neighboring one, the shortest was while the set varied from N to NE and S to SW in the section 250 and 494 respectively. Contrary the longest was while the set varied from SE to S and from W to NW in the section 250 and 494 respectively. 4. In comparison of the rate while the set varied from one of 8 principal bearing points to the neighboring one, the fastest was while the set varied from SE to Sand NW to N in the section 250, and E to SE and W to NW in the section 494. Contrary the slowest was while the current set to NE and S W in the section 250, and N, NE and S W in the section 494.

• Asian-Australasian Journal of Animal Sciences
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• 제32권5호
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• pp.648-656
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• 2019

Objective: An experiment was conducted to determine the effect of reduced energy density of close-up diets on metabolites, lipolysis and gluconeogenesis in cows during the transition period. Methods: Thirty-nine Holstein dry cows were blocked and assigned randomly to three groups, fed a high energy density diet (HD, 1.62 Mcal of net energy for lactation $[NE_L]/kg$ dry matter [DM]), a medium energy density diet (MD, $1.47Mcal\;NE_L/kg\;DM$), or a low energy density diet (LD, $1.30Mcal\;NE_L/kg\;DM$) prepartum; they were fed the same lactation diet to 28 days in milk (DIM). All the cows were housed in a free-stall barn and fed ad libitum. Results: The reduced energy density diets decreased the blood insulin concentration and increased nonesterified fatty acids (NEFA) concentration in the prepartum period (p<0.05). They also increased the concentrations of glucose, insulin and glucagon, and decreased the concentrations of NEFA and ${\beta}-hydroxybutyrate$ during the first 2 weeks of lactation (p<0.05). The plasma urea nitrogen concentration of both prepartum and postpartum was not affected by dietary energy density (p>0.05). The dietary energy density had no effect on mRNA abundance of insulin receptors, leptin and peroxisome proliferator-activated $receptor-{\gamma}$ in adipose tissue, and phosphoenolpyruvate carboxykinase, carnitine palmitoyltransferase-1 and peroxisome proliferator-activated $receptor-{\alpha}$ in liver during the transition period (p>0.05). The HD cows had higher mRNA abundance of hormone-sensitive lipase at 3 DIM compared with the MD cows and LD cows (p = 0.001). The mRNA abundance of hepatic pyruvate carboxy-kinase at 3 DIM tended to be increased by the reduced energy density of the close-up diets (p = 0.08). Conclusion: The reduced energy density diet prepartum was effective in controlling adipose tissue mobilization and improving the capacity of hepatic gluconeogenesis postpartum.

• 한국응용곤충학회지
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• 제50권4호
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• pp.301-306
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• 2011

Hypena 속 2종 H. nigrobasalis (Herz, 1904)와 H. conspersalis Staudinger, 1888, 중국에서는 처음으로 보고된다. 성충의 외부형태특징에 대해 간략하게 재기재하고 이들의 암수생식기의 도해도 및 분포정보를 제시한다.

• 한국석유지질학회:학술대회논문집
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• 한국석유지질학회 1998년도 제5차 학술발표회 발표논문집
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• pp.38-41
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• 1998

• 한국석유지질학회지
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• 제10권1_2호
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• pp.40-44
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• 2004

본 단보는 2002년 7월 30일부터 8월 8일까지 길림 대학교 (Jilin Univ., 중국 장춘 소재)에서 개최된 제9차 한중 공동 심포지움 (주제: Crustal Evolution in NE Asia)의 발표에 이은 야외조사에서 중국 Daqing(大慶) 유전 현장을 방문, 다양한 정보를 획득하였기에 회원들과의 지식 공유를 목적으로 작성되었다.

• Bulletin of the Korean Chemical Society
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• 제32권2호
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• pp.620-624
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• 2011

In recent years, the study of self-assembly peptide used in drug delivery system has been attracted great interest from scientists. In the category are self-assembly peptides in the structure either with one hydrophobic surface and another hydrophilic or a hydrophobic head and a hydrophilic tail. Here, we focus on a novel designed peptide EYK with double amphiphilic surfaces, investigating on the capability of peptide as a carrier for hydrophobic compound model pyrene. The fluorescence data presented the dynamic process of the transfer, showing that the pyrene was in the crystalline form in peptide solution, and molecularly migrated from its peptide encapsulations into the membrane bilayers when the peptide-pyrene suspension was mixed with liposome vesicles. The results indicated that the peptide EYK could stabilize hydrophobic pyrene in aqueous solution and delivered it into EPC liposome as a potential carrier.

• 암석학회지
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• 제14권4호
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• pp.251-263
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• 2005

중국 오대연지 신기 화산인 라오헤이산과 후오샤오산은 $1720\~1721$년에 분출하였다. 이 화산은 각각 K이 풍부한 포노테프라이트질 화성쇄설층과 용암으로 구성되는 스코리아구와 스패터구를 이루고 모두 넓은 용암류역을 가진다. 라오헤이산 스코리아구는 내부구조가 복잡하고 선${\cdot}$후기 화산체로 형성된 복성복식 화산이며 후기 화산체의 중앙부에는 깔때기형의 분화구가 있다. 후오샤오산 스패터구는 단성단식 화산이며 화산체 중앙부에 피트 분화구가 형성되어 있다. 화산층서는 먼저 라오헤이산이 형성되었고 후에 후오샤오산이 형성되었음을 지시한다. 또한 라오헤이산에서의 분출 과정이 용암분천과 스트롬볼리언 분출을 포함하는 폭발성분출과 분류성 분출의 5개 단계를 거치는 반복적 패턴을 따랐다는 것을 지시하고, 후오샤오산에서 스트롬볼리언 분출과 용암분류의 2개 단계를 거치는 규칙적 패턴을 따랐다는 것을 지시한다.

• 암석학회지
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• 제5권2호
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• pp.135-141
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• 1996

La-Ce법은 최근에 새로 개발된 연대측정법이다. 특히 La 및 Ce은 회토류원소군의 일원으로서 Sm-Nd법과 대비하여 해석할 경우, 지각물질 및 맨틀물질의 진화과정을 해석하는 데 있어서 아주 유용하게 쓰일 수가 있다. 본 논문에서는 La-Ce법의 기본개념에 대한 소개와 도불이 이를 토대로 하여 강원도 임원지 역의 우백질 화강편마암과 중국 요령성 안산지역에 분포하는 칼륨부화 화강암에 대하여 그 기원물질의 경희토류 분포양상을 유추하였다. 칼륨부화 화강암의 Sm-Nd년대는 $3.16{\pm}0.06$Ga($2{\sigma}$)이며 $^{143}Nd/^{144}Nd$초기치는 $0.50846{\pm}0.00005$(${\varepsilon}_{Nd}$=-1.5)이다. 이 초기치는 칼륨부화 화강암이 지각 내에서의 화성활동에 형성되어졌음을 의미한다. Nd 및 Ce 동위원소비의 결과에 이하면, 우백질 화강편마암과 칼륨부화 화강암은 CHUR과 거의 유사한 물질로부터 분화되었음을 알 수가 있다. 그리고 중국 동북부 료령성지역의 지각형성시기는 3.5Ga 보다 더 오래된 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제26권4호
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• pp.558-563
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• 2013

The present study was conducted to estimate energy requirements for maintenance in laying hens by using indirect calorimetry and energy balance. A total of 576 28-wk-old Nongda-3 laying hens with dwarf gene were randomly allocated into four ME intake levels (86.57, 124.45, 166.63 and 197.20 kcal/kg body weight $(BW)^{0.75}$ per d) with four replicates each. After a 4 d adaptation period, 36 hens from one replicate were maintained in one of the two respiration chambers to measure the heat production (HP) for 3 d during the feeding period and subsequent 3 d fast. Metabolizable energy (ME) intake was partitioned between heat increment (HI), HP associated with activity, fasting HP (FHP) and retained energy (RE). The equilibrium FHP may provide an estimate of NE requirements for maintenance (NEm). Results showed that HP, HI and RE in the fed state increased with ME intake level (p<0.05). Based on the regression of HP on ME intake, the estimated ME requirements for maintenance (MEm) was 113.09 kcal/kg $BW^{0.75}$ per d when ME intake equals HP. The FHP was decreased day by day with the lowest value on the third day of starvation. Except for lowest ME intake level, the FHP increased with ME intake level on the first day of starvation (p<0.05). The FHP at the two higher ME intake levels were greater than that at the two lower ME intake levels (p<0.05) but no difference was found between the two lower ME intake levels. Linear regression of HP from the fed state to zero ME intake yielded a value of 71.02 kcal/kg $BW^{0.75}$ per d, which is higher than the extrapolated FHP at zero ME intake (60.78, 65.23 and 62.14 kcal/kg $BW^{0.75}$ per d for the first, second and third day of fasting, respectively). Fasting time, lighting schedules, calculation methods and duration of adaptation of hens to changes in ME intake level should be properly established when using indirect calorimetry technique to estimate dietary NE content, MEm and NEm for laying hens.