Spawning Behavior, Egg Development, Larvae and Juvenile Morphology of Hyphessobrycon eques (Pisces: Characidae) Characidae Fishes

Jae-Min Park,Na-Ri Kim,Kyeong-Ho Han3,Ji-Hyeong Han,Maeng-Hyun Son,Jae-Kwon Cho 한국발생생물학회 2014 발생과 생식 Vol.18 No.4

Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2–3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28oC. The fertilized eggs had adhesive and demesal characteristics and had a mean diameter of 0.92 ± 0.01 mm. Larvae hatched at 16 hrs post fertilization. The hatched larvae averaged 2.90 ± 0.16 mm in total length (LT). Complete yolk sac resorption and mouth opening occurred on the third day post hatching. At 45 days post hatching, the larvae were 12.5 ± 1.60 mm LT and had reached the juvenile stage.

배추 생육 중 토양 수용성 양이온의 경시적 변화 모니터링

김용국(Yong gook Kim),Khok Pros,김경영(Kyoung young Kim),조현종(Hyun Jong Cho),나홍식(Hong Sik Na),한광현(Gwang Hyun Han) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11

토양의 치환성 이온 함량이 아닌 식물체에 직접 흡수되는 수용성 이온들을 모니터링 하는 것이 중요하다. 배추가 생육하면서 토양 중 수용성 양이온들의 함량이 어떻게 변하는지 확인하고, 각 이온의 농도에 따라 그에 알맞은 처방이 이루어져야 한다. 토양 시료는 경기도 이천시의 배추 밭에서 정식 이후 16, 35, 48, 70일에 처리구별 각 3반복씩 채취하였다. 처리구는 N 기준 무처리구(Nil), NPK 비료 표준 시비량의 50% 처리구(Con), 100% 처리구(Inf), 그리고 표준 시비량의 50% 처리구에 음폐퇴비가 100%(C100), 200%(C200), 300%(C300) 추가된 처리구가 있다. 채취한 토양은 풍건 후 2 mm 체에 거르고 1:5 비율로 증류수 추출하였으며, Whatman No.2 필터를 사용하여 여과한 후 0.45 μm 실린지 필터로 재 여과하였다. 토양 추출액의 분석은 (주)테크넬 POCT 분석 키트를 사용하였다. 화학비료 처리구의 토양 중 Na의 농도비율은 생육기간 중 꾸준히 증가하는 경향이 있었다. 하지만 K의 농도비율은 시간이 지남에 따라 경시적 감소가 명확하였다. 음폐퇴비 처리구의 경우 토양 중 Na의 농도비율은 생육기간 중 증가하는 경향이었으며, 특히 퇴비 처리수준에 비례하여 높아졌다. Mg의 농도비율은 모든 처리구에서 비슷한 수준을 유지하였다. 모든 처리구에서 토양 중 K의 농도비율 감소는 Na 농도비율의 증가와 상관관계가 높았다.

여성의 유방자가검진의 지식 정도

구한나,박인경,박하영,성초아,장다엘,홍은민 이화여자대학교 간호과학대학 2012 이화간호학회지 Vol.- No.46

Purpose: This study was to grasp women’s knowledge about Breast Self-examination. Methods: We collected data from 317 women who lives in certain city, Korea using structured questionnaire from 5th, August to 20th, September. The collected data was analyzed by SPSS 19.0. Results: The average score of women’ Breast Self-examination knowledge was 6.79±3.68 (of 17). There are three categories in knowledge about Breast Self-examination. Average score of category is 2.31 ± 0.71(of 4) for knowledge of breast cancer, 2.11 ± 0.57(of 5) for knowledge of breast cancer symptom, 2.37 ± 0.45(of 8) for knowledge of Breast Self-examination. Knowledge about Breast Self-examination according to general characteristics varied significantly for different age, marital status, education, and history of breast disease. Knowledge about Breast Self-examination according to characteristics related Breast examination was higher for women who received Breast Self-examination education, received Breast Self-examination education by lecture, performed Breast Self-examination, and who received Clinical Breast Examination Conclusion: People who are teenager and over sixties, their knowledge of Breast Self-examination was low. Therefore, effective Breast Self-examination education program should be provided for women who are teenager and over sixties to promote their Breast Self-examination practice regularly.

한국해안으로부터 Purple, Non-Sulfur Photosynthetic Bacterium, Rhodobacter sp. EGH-24의 분리 및 특성

차미선,김기한,조순자,이나은,이정은,이재동,이상준,박재림 한국환경과학회 2003 한국환경과학회지 Vol.12 No.12

A species of facultative photo-organotrophic, purple, non-sulfur bacterium was isolated from the 47 point at west and south coast of Korea in September 2001. Separated 13 samples of changes with red color under 28~32 ℃, 3000 lux, anaerobe conditions for 7 days cultivated in basal medium. For pure isolation from 13 samples, we used agar-shake tube method (0.4 % agar) and separated 5 strains through 13-repetition test. EGH-24 and EGH-30 was identified as the same strain through the RAPD(Random Amplified Polymorphic DNA)-PCR of strain EGH-9, EGH-13, EGH-23, EGH-24, EGH-30. Four isolates cultivated in synthesis wastewater for wastewater biodegradation test. EGH-24 was selected with efficient wastwater treating strain. Based on the results obtained from morphology, nutrient requirements, major bacteriochlorophyll content, 16S-rDNA phylogenetic analysis, EGH-24 strain may be identified as a new strain of the genus Rhodobacter and named Rhodobacter sp. EGH-24.

신손상 진단에 있어 현미경적 혈뇨의 의의

임정환,오봉렬,나국주,김현수,윤한덕,허 탁,조석주,민용일 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

The evaluation of patients with microscopic hematuria after blunt abdominal trauma has become controversial. We tested the hypothesis that renal contusion can be diagnosed clinically and that these patients do not require radiographic evaluation. To evaluate the association of microscopic hematuria without shock and with renal injury, we reviewed the medical records of 252 patients following blunt abdominal trauma. Microscopic hematuria without shock was noted in 58 of 252 patients. Of the 58 patients 52 had renal contusion, 4 had renal laceration, 1 had a renal rupture and 1 had renal pedicle injury. All of the patients with renal contusions experienced no complications from nonoperative management. But, avoiding a radiopraphic evaluation in patients with blunt renal trauma plus microscopic hematuria and no shock would miss a few cases of severe renal injury.

Characteristics of Writing in Parkinson’s Disease: Focused on Pen Pressure, Letter Size, and Writing Speed

이한솔(Han Sol Lee),윤진영(Jinyoung Youn),조진환(Jin Whan Cho),안종현(Jong Hyeon Ahn),윤지혜(Ji Hye Yoon),나덕렬(Duk L. Na) 한국언어청각임상학회 2020 Communication Sciences and Disorders Vol.25 No.1

배경 및 목적: 파킨슨병(PD)의 운동 장애는 쓰기 수행에서 글자 크기뿐만 아니라 필압과 속도 측면에도 영향을 미칠 수 있다. 본 연구의 목적은 PD의 쓰기 특성을 필압, 크기, 속도를 중심으로 살펴보고자 하였다. 방법: PD 38명과 정상 성인(NA) 25명, 총 63명을 대상으로, 태블릿 PC와 디지털펜을 가지고 필압, 획의 길이, 쓰기 시간을 측정할 수 있는 소프트웨어를 사용하여 점선 따라 그리기와 문장 쓰기 과제를 실시하고, 필압, 글자 크기, 쓰기 속도를 분석하였다. 결과: 점선 따라 그리기 과제에서 필압은 두 집단 간 차이가 없었고, 쓰기 속도는 PD 집단이 NA 집단 보다 느렸다. 문장 쓰기 과제에서 PD 집단이 NA 집단 보다 필압이 저하되고, 글자 크기가 작으며, 쓰기 속도가 느렸다. 두 집단은 공통적으로 글자 크기와 쓰기 속도 간의 정적 상관이 나타났으며, PD 집단은 필압과 쓰기 속도 간의 정적 상관도 나타났다. 논의 및 결론: 본 연구 결과는 PD로 인하여 강도, 크기, 속도 등의 운동 능력을 조절하는 것의 어려움이 쓰기 수행 시 필압, 글자 크기, 쓰기 속도로 반영될 수 있음을 보여준다. 본 연구는 그간 글자 크기에만 초점이 맞추어졌던 PD의 쓰기 특성에서 필압이나 쓰기 속도와 같이 다양한 요소를 측정하는 것이 중요함을 확인하였다는 점에서 의의가 있다. Objectives: Movement disorders in Parkinson’s disease (PD) can affect not only letter size but also pen pressure and writing speed. The purpose of this study was to investigate the characteristics of writing with focus on pressure, size, and speed in PD. Methods: Sixty-three subjects (38 in a PD group and 25 in a normal adult [NA] group) performed tasks involving drawing along dotted lines and sentence writing using a tablet PC, digital pen, and software that could measure pen pressure, stroke length, and duration. Results: In the task involving drawing along a dotted line, the PD group showed significantly slower writing speed compared with the findings in the NA group. Additionally, in the task involving sentence writing, the PD group showed significantly weaker pen pressure, smaller letter size, and slower writing speed compared with the NA group. Moreover, both groups showed a positive correlation between letter size and writing speed, but only the PD group showed a positive correlation between pen pressure and writing speed. Conclusion: Difficulty in motor control of strength, size, speed, etc. owing to PD is reflected in pen pressure, letter size, and writing speed when performing a writing task. Our results show an importance in measuring multiple factors such as pen pressure and writing speed in the characteristics of writing in PD, which has until now, has been focused only on letter size.

High Density Plasma Etching of Nickel Thin Films Using a Cl2/Ar Plasma

Han Na Cho,Sn Ryun Min,Hyung Jin Bae,Jung Hyun Lee,Chee Won Chung 한국공업화학회 2007 Journal of Industrial and Engineering Chemistry Vol.13 No.6

Impact of biochar and compost amendment on corn yield and greenhouse gas emissions under waterlogged conditions

Cho Han-Na,Shin Minji,Lee Ikhyeong,Ryoo Haeun,Acharya Bharat Sharma,Park Jae-Hyuk,Cheong Yong Hwa,Cho Ju-Sik,Kang Se-Won 한국응용생명화학회 2023 Applied Biological Chemistry (Appl Biol Chem) Vol.66 No.-

Biochar, widely recognized for its capacity to counteract climate change impacts, has demonstrated substantial benefits in agricultural ecosystems. Nevertheless, empirical studies exploring its efficacy during climatic aberrations such as heavy rainfall are limited. This study investigated the effects of compost and biochar addition on corn growth attributes, yield, and soil CO2 and N2O fluxes under heavy rain (exceeding 5-yr average) and waterlogging conditions. Here, treatments included compost (CP, 7.6 t ha−1); rice husk biochar (RB, 7.6 t ha−1); wood biochar (WB, 7.6 t ha−1); and control (Cn). Under high rainfall and waterlogging, the CP treatment manifested a pronounced enhancement in corn biomass and productivity, exceeding biomass and productivity of Cn treatment by 12.6 and 32.2%, RB treatment by 120 and 195%, and WB treatment by 86.1 and 111%, respectively. Corn yield increased in the order: CP > Cn > WB > RB. Intriguingly, negligible disparity occurred between the RB and WB treatments in straw yield, grain yield, grain index, and corn productivity but both treatments recorded distinctively lower values than CP treatment. Also, the CO2 and N2O fluxes remained largely similar for two biochar treatments but lower than CP treatment. Overall, CP increased corn yield, straw, and grain yield whereas biochars reduced N2O flux during waterlogging. Although derived from a short-term experimental window, these pivotal findings furnish invaluable insights for devising soil amendments for yield and environmental benefits in contexts of extreme climatic perturbations. Our findings offer a robust foundation for refining nutrient management strategies confronted with waterlogging challenges, but long-term studies are necessary for definitive conclusions.

Sequence analysis of the fusion protein gene of Newcastle disease virus isolated from breeder ducks in Korea

Han, Mi Na,Byeon, Hyeon Seop,Lee, Cho Yeon,Jo, Nam Sin,Lee, Jong Hwa,Jang, Rae Hoon,Kim, Chang Seop,Na, Ki Jeong The Korean Society of Veterinary Service 2019 韓國家畜衛生學會誌 Vol.42 No.4

Newcastle disease (ND) is an infectious poultry disease that caused high mortality and reduced egg production. NDVs are regularly present in the domestic duck population. And ducks play a possible role in the maintenance and transmission of NDVs. While we were monitoring the Avian Influenza, NDVs were isolated from field samples by accident. So we analysed the biological and genetic characteristics of these viruses. Lentogenic NDVs were isolated from two farms among twenty breeder duck farms. The ages of ducks were 39 weeks old in the 'A' farm and 3~72 weeks old in the 'B' farm. And they were not inoculated with the NDVs vaccine. In the biological characteristics, the both viruses which separated from the farm 'A' and 'B' were thermostable. The amino acid sequence of a site from 112 to 119 in the fusion (F) protein was 'GKQGRLIG' which has monobasic motif in the samples of both farms. And this means the separated NDVs are lentogenic. Phylogenetic analysis was performed by entire nucleotide sequence of F protein. The virus strains from the A farm (MN095239) and the B farm (MN095240) belonged to class II genotype I. Using the analysis of whole F protein nucleic acid sequence, the MN095239 (GenBank) had homology with Ulster strain about 99.95% and the MN095239 (GenBank) had homology with KR/CK/KU_LBM255/09 strain about 99.89%. NDV surveillance is needed to investigate epidemiological relationship of domestic breeder duck isolates in Korea.

Regulation of Dendritic Spines, Spatial Memory, and Embryonic Development by the TANC Family of PSD-95-Interacting Proteins.

Han, Seungnam,Nam, Jungyong,Li, Yan,Kim, Seho,Cho, Suk-Hee,Cho, Yi Sul,Choi, So-Yeon,Choi, Jeonghoon,Han, Kihoon,Kim, Youngrim,Na, Moonseok,Kim, Hyun,Bae, Yong Chul,Choi, Se-Young,Kim, Eunjoon The Society 2010 The Journal of neuroscience Vol.30 No.45

<P>PSD-95 (postsynaptic density-95) is thought to play important roles in the regulation of dendritic spines and excitatory synapses, but the underlying mechanisms have not been fully elucidated. TANC1 is a PSD-95-interacting synaptic protein that contains multiple domains for protein-protein interactions but whose function is not well understood. In the present study, we provide evidence that TANC1 and its close relative TANC2 regulate dendritic spines and excitatory synapses. Overexpression of TANC1 and TANC2 in cultured neurons increases the density of dendritic spines and excitatory synapses in a manner that requires the PDZ (PSD-95/Dlg/ZO-1)-binding C termini of TANC proteins. TANC1-deficient mice exhibit reduced spine density in the CA3 region of the hippocampus, but not in the CA1 or dentate gyrus regions, and show impaired spatial memory. TANC2 deficiency, however, causes embryonic lethality. These results suggest that TANC1 is important for dendritic spine maintenance and spatial memory, and implicate TANC2 in embryonic development.</P>