• Title/Summary/Keyword: Cross-sectional-view

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Milt Properties of Four Flatfish Species and Fine Structure of Their Cryopreserved Spermatozoa

  • Chang Yun Jeong;Chang Young Jin
    • Fisheries and Aquatic Sciences
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    • v.5 no.2
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    • pp.87-96
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    • 2002
  • The physico-chemical properties of fresh milt of marbled sole, Limanda yokohamae, brown sole, Limanda herzensteini, starry flounder, Platichthys stellatus and olive flounder, Paralichthys olivaceus among flatfishes, and the fine structure of their cryopresserved spermatozoa were investigated. The highest concentration of sperm among these four species was $3.60\pm1.35\times10^{10}/mL$ in marbled sole. Osmolality and pH of seminal plasma in four flatfish species were approximately 330 mOsm/kg and 7.6-8.1, respectively. Seminal plasma compositions showed interspecific differences. The sperm heads of marbled sole, brown sole and starry flounder were ellipsoidal and that of olive flounder was round. The numbers of mitochondria of these four species were eight in marbled sole, seven in brown sole and starry flounder, and six in olive flounder. Cross-sectional view of flagellum showed typical 9+ 2 structure in all species. Most of sperms cryopreserved with a proper method had no visible ultrastructural changes after freeze-thawing, compared with the fresh sperm, but in a few cases, swelling of their heads and midpiece regions were observed.

Cervical Cancer Screening: Knowledge, Attitude and Practices among Nursing Staff in a Tertiary Level Teaching Institution of Rural India

  • Shekhar, Shashank;Sharma, Chanderdeep;Thakur, Sita;Raina, Nidhi
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.6
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    • pp.3641-3645
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    • 2013
  • Background: Assessment of the nursing staff knowledge, attitude and practices about cervical cancer screening in a tertiary care teaching institute of rural India. Materials and Methods: A cross sectional, descriptive, interview-based survey was conducted with a pretested questionnaire among 262 staff nurses of a tertiary care teaching and research institute. Results: In this study 77% respondents knew that Pap smear is used for detection of cervical cancer, but less than half knew that Pap smear can detect even precancerous lesions of cervix. Only 23.4% knew human papilloma virus infection as a risk factor. Only 26.7% of the respondents were judged as having adequate knowledge based on scores allotted for questions evaluating knowledge about cervical cancer and screening. Only 17 (7%) of the staff nurses had themselves been screened by Pap smear, while 85% had never taken a Pap smear of a patient. Adequate knowledge of cervical cancer and screening, higher parity and age >30 years were significantly associated with self screening for cervical cancer. Most nurese held a view that Pap test is a doctor procedure, and nearly 90% of nurses had never referred a patient for Pap testing. Conclusions: The majority of nursing staff in rural India may have inadequate knowledge about cervical cancer screening, and their attitude and practices towards cervical cancer screening could not be termed positive.

A Study on Verification and Editing of NC Part-program (NC파트프로그램의 검증 및 오류 수정에 관한 연구)

  • 김찬봉;박세형;양민양
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.17 no.5
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    • pp.1074-1083
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    • 1993
  • NC simulation has been used to replace the test cutting of NC machining. Although it can reduce the NC part programming effort, it still has a problem. If any error is found during the simulation, then the part has to be reprogrammed and it is time consumming. This paper presents a method for verifying and editing the NC code after the post-processing without going back to the part programming stage. A data structure and an algorithm to verify and edit the NC code interactively with the aid of graphics is introduced. Z-map method is used for the shaded image display and cross-sectional view display of the macined parts. The method was implemented in a IBM/PC-386 with MS-Windows software, and the multi-window function of the of the MS-Windows is used for the simultaneous editing and verification.

Changes in Physical Properties of Jeungpyun During Fermentation (발효시간에 따른 증편의 물성변화)

  • 박영선;서정식
    • Korean journal of food and cookery science
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    • v.13 no.4
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    • pp.396-401
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    • 1997
  • Physical Properties of Jeungpyun product were analyzed during fermentation in the ranges of 0 to 10 hours. Penetration value of Jeungpyun sample measured by penetrometer was increased greatly according to the development of fermentation time, recording maximum value, 135 at 7 hours. Specific volume and total pore ratio were also increased greatly in course of fermentation time, recording maximum value, 3.5 ㎤/g-dry matter and 54.9% at fermentation time, 6 hours and 4 hours respectively while they were decreased since then. Some remaining peaks on X-ray diffractogram were seen in all the Jeungpyun samples. Micropores and macropores were observed on cross-sectional view of all the fermented Jeungpyun samples.

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Chemical Vapor Nucleation of Tungsten from $WF_6-SiH_4$ on Silicon Dioxide Surface (산화규소 표면위에서 $WF_6-SiH_4$ 화학증착에 의한 텅스텐 핵의 생성)

  • Choi, Kyeong-Keun;Yi, Chung;Rhee, Shi-Woo;Lee, Kun-Hong
    • Korean Journal of Materials Research
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    • v.2 no.1
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    • pp.19-26
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    • 1992
  • The rate of tungsten nuclei formation from $WF_6-SiH_4$ on silicon dioxide surface was measured. The nucleation rate became faster at high deposition temperature, low carrier gas flow rate and high deposition pressure. Also the rate became faster at the downstream of the oxide surface compared to the oxide surface near the inlet. Shape and cross-sectional view of the tungsten nuclei were observed with SEM and their chemical compositions were also determined.

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Thermal-Hydraulic Aspects of an Advanced Reactor Core with Triangular Lattice Fuel Assemblies

  • Hwang, Dae-Hyun;Yoo, Yeon-Jong;Kim, Young-Jin;Chang, Moon-Hee
    • Proceedings of the Korean Nuclear Society Conference
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    • 1996.05b
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    • pp.379-384
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    • 1996
  • Thermal-hydraulic performance has been analyzed for an advanced reactor core loaded with hexagonal fuel assemblies. Currently available CHF prediction models and data base for triangular lattice bundles have been thoroughly reviewed, and as a result the KfK-3 CHF correlation with limit CHFR of 1.235 has been determined to be most appropriate. The pressure drop model in COBRA-IV-I code has been modified for the analysis of triangular lattice rod bundles. In view of maximizing the thermal margin, the geometry of a hexagonal fuel assembly, such as rod diameter and rod pitch, has been optimized with a fixed fuel assembly cross sectional area The optimum value of the moderator-to-fuel volume ratio is estimated to lie between 0.65 to 1 with 9.5 mm rod diameter. The thermal margin of these hexagonal fuel assemblies in the AP600 core has been evaluated and compared with that of square lattice fuel assemblies such as VANTAGE-5H and KOFA. The analysis result shows that the performances of hexagonal fuel assemblies are more favorable than the square fuel assemblies in the aspect of steady-state overpower margin.

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ENHANCED BIOAVAILABILITY OF NIFEDIPINE USING COATED DRY ELIXIR

  • Park, Jae-Yoon;Kim, Chong-Kook
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1996.04a
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    • pp.282-282
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    • 1996
  • The purpose of this study was to prepare the nifedipine dry elixir (NDE) and coated nifedipine dry elixir (CNDE) containing nifedipine ethanol solution for improving the dissolution rate and bioavailability of nifedipine. NDE containing nifedipine and ethanol in wall materials of dextrin was prepared using a spray-dryer and then NDE was coated with eudragit acrylic resin to make CNDE. Shape and size of the NDE and CNDE were monitored by scanning electron micrograph and laser particle size analyzer In vitro dissolution tests were performed in simulated gastric and intestinal fluid. Bioavailability of NDE and CNDE were compared with drug powder suspension and commercial soft capsule after oral administration of the preparations to rats. NDE and CNDE are spherical in shape. Cross-sectional view of dry elixirs indicates the large inter cavity containing ethanolic drug solution in shell. Geometric mean diameter of NDE and CNDE is about 6.64 and 8.70 $\mu\textrm{m}$, respectively. Drug dissolution rate within first 5 min from NDE increased dramatically irrespective of dissolution medium. However, CNDE showed a particularly retarded dissolution rate in pH 1.2 simulated gastric fluid compared with NDE. The bioavailability of nifedipine in the NDE was increased dramatically compared with drug powder suspension. CNDE reduced initial burst-out plasma peak compared with NDE. CNDE as a sustained release delivery system could reduce the initial burst-out plasma peak due to controlling the release rate of nifedipine from NDE and maintain the effective plasma level over a longer period within therapeutic window with enhanced bioavailability of nifedipine.

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Zoom-in X-ray Micro Tomography System

  • Chun, In-Kon;Lee, Sang-Chul;Park, Jeong-Jin;Cho, Min-Hyoung;Lee, Soo-Yeol
    • Journal of Biomedical Engineering Research
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    • v.26 no.5
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    • pp.295-300
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    • 2005
  • We introduce an x-ray micro tomography system capable of high resolution imaging of a local region inside a small animal. By combining two kinds of projection data, one from a full field-of-view (FOV) scan of the whole body and the other from a limited FOV scan of the region of interest, we have obtained zoomed-in images of the region of interest without any contrast a nomalies. We have integrated a micro tomography system using a micro-focus x-ray source, a $1248\times1248$ flat-panel x-ray detector, and a precision scan mechanism. Using the cross-sectional images taken with the zoom-in micro tomography system, we measured trabecular thicknesses of femur bones in postmortem rats. To compensate the limited spatial resolution in the zoom-in micro tomography images, we used the fuzzy distance transform for the calculation of the trabecular thickness. To validate the trabecular thickness measurement with the zoom-in micro tomography images, we compared the measurement results with the ones obtained from the conventional micro tomography images of the extracted bone samples.

Relation between Emotional Intelligence and Self-Esteem in Nursing Students (간호대학생의 정서지능과 자아존중감의 관계)

  • Kim, Hyun-Ju;Chung, Mi Young
    • Journal of Korean Academic Society of Home Health Care Nursing
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    • v.22 no.2
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    • pp.228-236
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    • 2015
  • Purpose: This descriptive study investigated the relation between nursing students' emotional intelligence and self-esteem. Methods: A cross-sectional descriptive study was employed. The subjects were 323 students from a nursing college in B City. Data were collected using questionnaires on emotional intelligence and self-esteem from October to December, 2014. Results: The nursing students scored 3.61 out of 5 in emotional intelligence and 2.92 out of 4 in self-esteem. There were significant differences between emotional intelligence and self-esteem according to age, gender, daily life stress, satisfaction with the nursing major, learning stress, subjective academic achievement, and peer relationships. Emotional intelligence also showed significant differences in accordance with the motivation to choose the nursing major and the field in high school. Positive correlations were observed between emotional intelligence and self-esteem in nursing students. Conclusions: Based on those findings, it is necessary to develop and apply an array of educational programs to help nursing students improve their emotional intelligence and self-esteem throughout the college curriculum. These efforts will also be effective in building their satisfaction with the nursing major and view of nursing profession.

Electrical Properties of DC Sputtered Titanium Nitride Films with Different Processing Conditions and Substrates

  • Jin, Yen;Kim, Young-Gu;Kim, Jong-Ho;Kim, Do-Kyung
    • Journal of the Korean Ceramic Society
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    • v.42 no.7 s.278
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    • pp.455-460
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    • 2005
  • Deposition of TiN$_{x}$ film was conducted with a DC sputtering technique. The effect of the processing parameters such as substrate temperature, deposition time, working pressure, bias power, and volumetric flowing rate ratio of Ar to N$_{2}$ gas on the resistivity of TiN$_{x}$ film was systematically investigated. Three kinds of substrates, soda-lime glass, (100) Si wafer, and 111m thermally grown (111) SiO$_{2}$ wafer were used to explore the effect of substrate. The phase of TiN$_{x}$ film was analyzed by XRD peak pattern and deposition rate was determined by measuring the thickness of TiNx film through SEM cross-sectional view. Resistance was obtained by 4 point probe method as a function of processing parameters and types of substrates. Finally, optimum condition for synthesizing TiN$_{x}$ film having lowest resistivity was discussed.