• Title/Summary/Keyword: Outer-well medium

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Effect of evaporation-induced osmotic changes in culture media in a dry-type incubator on clinical outcomes in in vitro fertilization-embryo transfer cycles

  • Chi, Hee-Jun;Park, Jun-Sang;Yoo, Chang-Seok;Kwak, Su-Jin;Son, Ho-Jeong;Kim, Seok-Gi;Sim, Chae-Hee;Lee, Kyeong-Ho;Koo, Deog-Bon
    • Clinical and Experimental Reproductive Medicine
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    • v.47 no.4
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    • pp.284-292
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    • 2020
  • Objective: This study investigated whether adding outer-well medium to inhibit osmotic changes in culture media in a dry-type incubator improved the clinical outcomes of in vitro fertilization-embryo transfer (IVF-ET) cycles. Methods: In culture dishes, the osmotic changes in media (20 µL)-covered oil with or without outer-well medium (humid or dry culture conditions, respectively) were compared after 3 days of incubation in a dry-type incubator. One-step (Origio) and G1/G2 (Vitrolife) media were used. Results: The osmotic changes in the dry culture condition (308 mOsm) were higher than in the humid culture conditions (285-290 mOsm) after 3 days of incubation. In day 3 IVF-ET cycles, although the pregnancy rate did not significantly differ between the dry (46.2%) and humid culture (51.0%) groups, the rates of abortion and ongoing pregnancy were significantly better in the humid culture group (1.5% and 49.5%, respectively) than in the dry culture group (8.3% and 37.8%, respectively, p<0.05). In day 5 IVF-ET cycles, the abortion rate was significantly lower in the humid culture group (2.2%) than in the dry culture group (25.0%, p<0.01), but no statistically significant difference was observed in the rates of clinical and ongoing pregnancy between the dry (50.0% and 25.0%, respectively) and humid culture groups (59.5% and 57.3%, respectively) because of the small number of cycles. Conclusion: Hyperosmotic changes in media occurred in a dry-type incubator by evaporation, although the medium was covered with oil. These osmotic changes were efficiently inhibited by supplementation of outer-well medium, which resulted in improved pregnancy outcomes.

X-RAY EMISSION FROM THE WARM-HOT INTERGALACTIC MEDIUM

  • KAASTRA JELLE S.
    • Journal of The Korean Astronomical Society
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    • v.37 no.5
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    • pp.375-379
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    • 2004
  • In this paper I give an overview of the detection of emission from the warm-hot intergalactic medium (WHIM) in the outer parts of clusters of galaxies. The evidence for the presence of soft excess X-ray emission in 7 out of 21 clusters is summarized, and it is demonstrated that several of these clusters show the signatures of thermal emission in the outer parts. A strong signature is the presence of redshifted O VII emission at 0.57 keV. In the central parts, several clusters show also a soft excess, but m this case the observations cannot well discriminate between a thermal or non-thermal origin of the soft X-ray excess.

A Study about Systematic Classification of a Female′s Contemporary Underwear (현대 여자 속옷의 체계적 분류에 관한 연구)

  • 이연수;김선화
    • The Korean Journal of Community Living Science
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    • v.14 no.3
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    • pp.21-30
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    • 2003
  • An underwear originated from when a human lost his purity and recognized his situation. But, it could not be sure when underwear and an outer garment were classified according to a function. An underwear has been used for a decorative and mental function, as well as a practical one. Also, it is the most fundamental medium to understand a human and a period. However, many studies on outer garments not an underwear have been done till now Therefore, this study was done to be arranged and analyzed materials scattered in order to give a correct understanding of an underwear as a clothes. The data were based on the existing fashion pamphlets, fashion magazines and other materials. The main results were as follows; Female's contemporary underwear was classified into Hosiery, Foundation and Lingerie. The Hosiery was again classified into chemise, combination, drawers and brief. The most typical hosiery was a chemise for a health and hygiene, and the drawers was adhered closely to a body. The Foundation which had a function to be well shaped was classified into Brassiere, Girdle, All in one, Body suit, Corset, Waist nipper and Garter belt. A typical contemporary foundation was a brassiere and a girdle. A brassiere had a role to support the breast up and A girdle compensate a hip area. The Lingerie which made body silhouette be vivid was classified into Slip, Panty, Wintum, Linge, Home lingerie, and so on. A slip, a panty and a lingo were typical lingeries. A slip made an outer garment be well-formed.

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Buckling Analysis of Corrugated Board using Finite Element Method (유한요소법에 의한 Corrugated Board의 휨 발란스 해석)

  • 박종민
    • Journal of Biosystems Engineering
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    • v.28 no.2
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    • pp.127-136
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    • 2003
  • The top-to-bottom compression strength of corrugated board box is the most important mode of loading during it's no, and it depends largely on the edgewise compression strength of the corrugated board in the cross-machine direction and to a considerable extent on the flexural stiffness in both principal directions (CD; cross-machine direction, MD; machine direction) of the corrugated board. Corrugated board is a sandwich structure with an orthotropic property. The purpose of this study was to elucidate the principal design parameters for board combination of corrugated board from the viewpoint of bending strength through the finite element analysis [FEA] fur the various corrugated board. In general, the flexural stiffness [FS] in the MD was 2-3 times larger than that in the CD, and the effect of liner for the FS of corrugated board was much bigger than that of corrugating medium. The flexural stiffness index [FSI] was high when the stiffness of liner was in the order of inner, outer, and middle liner in double-wall corrugated board [DW], and the effect of the stiffness arrangement or itself reinforcement of corrugating medium on the FSI was not high. In single-wall corrugated board [SW] with DW. the variation of FSI with itself stiffness reinforcement of liner was much bigger than that with stiffness arrangement of liner. The highest FSI was at the ratio of about 2:1:2 for basis weight distribution of outer, middle, and inner liner if the stiffness of liner and total basis weight of corrugated board were equal in DW Secondarily. basis weight was in the order of inner, outer, and middle liner. However, the variation of FSI with basis weight distribution between liner and corrugating medium was much bigger than that with itself basis weight distribution ratio of liner and corrugating medium respectively in both DW and SW. md the FSI was high as more total basis weight was divided into liner. These phenomena fur board combination of corrugated board based on the FEA were well verified by experimental investigation.

Analysis on the Likelihood of Axisymmetric Wave Propagation in Buried Water Pipes (지하매설 배관의 축대칭 파동 전파 가능성 해석)

  • Park, Kyung-Jo
    • Journal of Power System Engineering
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    • v.17 no.1
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    • pp.36-41
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    • 2013
  • A study of the possible axisymmetric modes that propagate at low frequencies in buried, water-filled pipes is presented. It is well known that for a vacuum-pipe-vacuum system the sole non-torsional axisymmetric mode that exists at low frequencies is the fundamental L(0,1) mode. When a pipe is filled with water and still surrounded by a vacuum it is also known that another mode then appears which at low frequencies is characterized by predominantly axial water-borne displacements. In addition to these modes. this paper explores two other, less well known axisymmetric modes whose exitence depends on the acoustic properties of the outer medium that surrounds a pipe. The predicted characteristics of these modes are presented and the likelihood of them propagating over any significant distance in a buried water pipe is discussed.

Characteristics of Acoustic Waves That Propagate in Buried Iron Water Pipes (매립된 유체함입 강파이프의 파동전파 특성규명)

  • Park, K.J.
    • Journal of Power System Engineering
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    • v.10 no.1
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    • pp.65-70
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    • 2006
  • A study of the possible axisymmetric modes that propagate at low frequencies in buried, water-filled iron pipes is presented. It is well known that for a vacuum-pipe-vacuum system the sole non-torsional axisymmetric mode that exists at low frequencies is the fundamental L(0,1) mode. When a pipe is filled with water and still surrounded by a vacuum it is also known that another mode then appears which at low frequencies is characterized by predominantly axial water-borne displacements. In addition to these modes, this paper explores two other, less well known axisymmetric modes whose existence depends on the acoustic properties of the outer medium that surrounds a pipe. In this paper the predicted characteristics of these modes are presented.

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Outer Shape Design of Rotating Medium Antenna Installed on Ship Mast (함정 마스트 장착 레이더용 회전 중형 안테나의 외부 형상 설계)

  • Cho, Ki-Dae;Kim, Ki-Wan;Kwon, Min-Sang;Hong, Seong-Il
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.36 no.8
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    • pp.843-850
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    • 2012
  • To satisfy the operational requirements of surveillance radar and the operational concept of a ship combat system, an active-array-type antenna was designed using solid-state transmitters and receivers. The arrangement of the constituent electronic components of the antenna system, considerably large in size, and therefore, the antenna needs to be housed in a box. The rotational antenna system installed on a ship mast is installed in a sealed housing to protect the interior equipment from environmental conditions. The outer shape of the housing is that the antenna should be capable of rotating normally despite strong winds. Furthermore, in recent times, designs with low radar cross section (RCS) have attracted attention from the viewpoint of improving the stealth of the ship. In this light, four types of models are proposed for the outer shape design of the antenna system, and they are investigated from the viewpoint of low RCS design as well as wind load.

Multiple Well Differentiated Fetal Adenocarcinoma of the Lung - A Case Report - (다발성의 분화도가 좋은 태아형 폐선암종 - 1예 보고 -)

  • Kim, Kwang-Il;Lee, Joo-Han;Mun, Jeong-Seok;Kim, Han-Kyeom
    • The Korean Journal of Cytopathology
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    • v.8 no.1
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    • pp.69-75
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    • 1997
  • Well differentiated fetal adenocarcinoma of the lung Is a subtype of pulmonary blastoma. In this report, CT-guided fine needle aspiration smears were performed at the right upper lobe of the lung in a 45 year-old male patient who had the smoking history of one pack per day for 25 years. The smears disclosed round, papillary, and tubular patterns of cell clusters. The individual cells had relatively uniform, small to medium sized nuclei without nucleoli, and showed vesicular or eosinophilic cytoplasm with Indistinct cell border. The morules were seen in the central area of papillary clusters. They were composed of two cell types, outer single layered cuboidal cellular lining and central three-dimensional cluster of cells simulating fetal lung. These cytologic features need to be differentiated from usual pulmonary adenocarcinoma, carcinoid, and pulmonary blastoma. On histologic findings, the tumor arised in the bronchial epithelium. And the tumor cells had abundant intracytoplasmic glycogen with neuroendocrine feature on histochemical study. In addition, the multiplicity of this tumor is the unique point comparable to the previous reports.

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A Study of Development for EMAT sensor of an Lorentz force type (Lorentz force 형태의 EMAT센서 개발에 관한 연구)

  • 정영재
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.7 no.2
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    • pp.9-14
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    • 1998
  • One of the areas in the continuous casting process that up to this point, has not been definitively instrumented is a method of reliably locating the part of a continuously cast strand that remains liquid for a period after the outer portion has solidified. To solve the problem. Electromagnetic Trandsducers(EMAT) which operate across an air gap without the need for a coupling medium has been developed. The system was designed to employ a through transmission technique which enhanced the signal-to-noise ratio. The Al 75$\times$75mm and 75$\times$100mm simulators with 2, 4, 8, 16, 32 mm hole respectively has been produced in order to verify the developed EMAT system and to measure to liquid core in continuous casting strand. The system developed can be employed for the optimization of torch cutting speed and for the final cut length of the bloom as well as calculation of average bloom temperature.

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THIN SHELL FORMATION TIME AND [OIII] LINE IN FAST WIND BUBBLE (빠른 항성풍 거품의 구각형성 시각과 [OIII]선의 형성)

  • Choi, Seung-Eon;Lee, Yeong-Jin
    • Publications of The Korean Astronomical Society
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    • v.11 no.1
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    • pp.91-107
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    • 1996
  • We determine analytically the onset of thin-shell formation time of fast wind bubble with power-law energy injection $E_{in}=E_0t^s$, and power-law ambient density structure, ${\rho}_0(r)={\bar{\rho}}(r/{\bar{r}})^{-{\omega}}$. Thin-shell formation time, $t_{sf}$ can be estimated by minimizing the total time elapsed before the complete cooling of shocked gas. For uniform medium (${\omega}=0$) and constant energy injection (s = 1), the onset of shell formation is found to be at $t_{sf}=5.2{\times}10^3yr$, which agrees Quite well with the results of FCT 1D numerical calculation. We solve the line transfer problem with previous result derived by numerical calculation in order to calculate line profile of [OIII] (${\lambda}=5007{\AA}$) forbidden line. In general, radiative outer shell causes the formation of double peaked line profile. Each peak corresponds to approaching and receeding shells with large velocities. Our line profiles show good agreements with observation of expanding shell structure.

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