• Title/Summary/Keyword: E/T

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Effects on n-Alcohols on the Amino-Proton Chemical Shifts and on the Hindered Rotation about the N-C(O) Bond of Acetamide (아세트아미드의 아미노 양성자의 화학적 이동과 N-C(O) 결합주위의 부자유회전에 미치는 n-알코올 용매 효과)

  • Gwon, Sun Gi;Choe, Jong Ho;Choe, Yeong Sang;Yun, Chang Ju;Gwon, Dae Geun
    • Journal of the Korean Chemical Society
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    • v.34 no.6
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    • pp.509-516
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    • 1990
  • 1H-nmr chemical shifts and lineshapes of amino-protons of acetamide (AA) in n-alcohols were determined. The chemical shifts are discussed by the Reichardt's solvent polarity parameter, E$_{T}$(30). The following relationship between $\delta$obs and E$_{T}$(30) was obtained. ${\delta}_{obs}$ = ${\delta}_{o}$ + aE$_{T}$ (30) + b[E$_{T}$(30)]$^2$ where ${\delta}_{o}$ is the chemical shift of the solute in gaseous state or at $E_{T}$(30) = 0, a is a characteristic constant for the protons of AA in n-alcohol solutions and b is a constant for the solute (AA)-solvent (n-alcohols) interaction. The barrier of the hindered rotation about the N-C(O) bond in AA was obtained by analysis of the lineshapes of the amino-protons in AA. The behavior of the internal rotation as well as chemical shifts of the amino-protons in AA has been found to be closely related to the $E_{T}$(30) of n-alcohols.

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Comparative Study on the Effectiveness of Modified Kato's Cellophane Thick Smear and Stoll's Dilution Egg Counting Technique for Quantitative Fecal Examination of Helminth Eggs (윤충란 정량검사를 위한 Stoll 희석충란계산법과 Kato 후층도말변법의 비교)

  • 홍성종;우호춘
    • Parasites, Hosts and Diseases
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    • v.30 no.2
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    • pp.141-146
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    • 1992
  • A total of 197 fecal specimens was prepared for quantitative examination of helminth eggs by modified Kato's cellophane thick smear (M.C.T.S.) and Stoll's dilution egg counting technique (D.E,C.T.). The comparative effectiveness of two techniques was evaluated and conversion function was deduced. The average time required for the microscopic examination on one slide by M.C.T.S. was 12.6 minutes and that of D.E.C.T. was 14.6 minutes. M.C.T.S. showed lower false negative rate than D.E.C.T in light worm burden cases. Functions to convert the counts obtained by M.C.T.S. to E.P.G. by Stoll's dilution egg counting technique were $47.86{\times}10^{0.87{\;}logM.C.T.S.},{\;}$ in A. lumbricoides, $41.69{\times}10^{0.82{\;}logM.C.T.S.}$ in T. trichiura and $63.10{\times}10^{0.85{\;}logM.C.T.S.}$ in C. sinensis. It was suggested M.C.T.S. be better than D.E.C.T. for the quantitative examination of intestinal helminthiases such as A. lumbricoides, T. trichiura, and C. sinensis infections even in the cases with low worm burden.

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Temperature Dependence of Excitonic Transitions in GaN Grown by MOCVD

  • Guangde Chen;Jingyu Lin;Hongxing Jiang;Kim, Jung-Hwan;Park, Sung-Eul
    • Journal of Photoscience
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    • v.7 no.1
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    • pp.27-30
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    • 2000
  • The Photoluminescence (PL) measurement results of a very good quality GaN sample grown by metalorganic chemical vapor deposition (MOCVD) are reported. The temperature dependences of peak position, emission intensity, and the full width at half maximum (FWHM) of free-exciton (FX) A and B are presented. Our results show the fast thermal quenching of FX transition intensities and predominantly acoustic phonon scattering of emission line broadening. The transition-energy-shift following the Varshni's empirical equation, and by using it to fit the data, E$\_$A1/(T) = 3.4861 eV -6.046 $\times$ 10$\^$-4/T$^2$ (620.3+ T) eV, E$\_$B1/(T) = 3.4928 eV -4.777 $\times$ 10$\^$-4/T$^2$ / (408.2+ T) eV and E$\_$A2/ = 3.4991 eV -4.426 $\times$ 10$\^$-4/ T$^2$ / (430.6+ T) eV for A(n=1), B(n=1), and A(n=2) are obtained respectively.

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Mechanism of Vowel Phonation in T-E Shunt Patient using MR Imaging after Total Laryngectomy (후두 전적출술후 MR영상을 이용한 음성재활환자의 발성기전에 관한 연구)

  • Park, Byung-Rae
    • Journal of radiological science and technology
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    • v.20 no.1
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    • pp.21-27
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    • 1997
  • Total laryngectomy has become an usual treatment for any advanced carcinoma of the laynx, but most patients who have undergone total laryngectomy have shown permanant disability in voice production. I compared the first three formant frequencies estimated from MRI to those measured directly from speech data of the T-E patients and the normal. It was to estimate the accuracy of MRI and to compare the vocal tract shape of the normal to T-E patients. The obtained results were as follows : 1. The middle sagittle section of the MRI represents vocal tract well during pnonation. The vocal tract shape of the T-E shunt patients are lack of pharyngeal space and superior space of the glottis. 2. The length of the normal subject's vocal tract is 17 cm. For the T-E shunt patients, the length from lip to shunt opening is 17.5 cm in case 1, and 18.5 cm in case 2. That of the true resonante chamber is 13 cm and 13.5 cm for each case respectively. 3. T-E shunt patients phonated strained voice. The intensity of the higher formant frequency decreased especially in /o/, /u/. 4. The vocal tract is shortened during the phonation by T-E shunt patients. In case of /e/ and /i/, front cavities are constricted while back cavities are shortened. 5. The pseudoglottis of the T-E shunt patients is located at $14{\sim}15\;cm$ below from lips.

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쌍끌이 중층트롤어법의 연구 ( 2 ) - 모형어구의 깊이에 관하여 - ( A Study on the Pair Midwater Trawling ( 2 ) - Working Depth of the Model Net - )

  • 이병기
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.31 no.1
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    • pp.45-53
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    • 1995
  • Working depth of the model net was determined by using of the same experimental tank and the same model net that used in the forwarded report in a series studies. The depth of the net which indicates the depth of the head rope from the water surface, was determined by the photographs taken in front of the net mouth with the combination of towing velocity, warp length and distance between paired boats. The results obtained can be summarized as follows: 1. Working depth of model nets A and B was varied in the range of 0.09~1.66$m$,and 0.04~1.34$m$(which can be converted into 2.7~40.2$m$and 1.2~49.8$m$in the full-scale net) respectively, and the depth of model net A was slightly deeper than the depth of the model net B. 2. Working depth ($D$,which is appendixed m for the model net, f for the full-scale net, A and B for the types of the model nets) can be expressed as the function of towing velocity$V_t$, as in the model net($V_t$=$m$/$sec$) $D_{mA}$=(-1.99+0.65$L_w$) $e^{-1.72V_t}$ $D_{mA]$=(-1.91+1.04 $L_w$) $e^{2.88V_t}$ in the full-scale net($V_t$=$k$'$t$ $D_{fA}$=(-29.32+0.65$L_w$)$e^{0.40 V_t}$ $D_{fB}$=(-57.60+1.04$L_w$)$e^{-0.67 V_t}$ 3. Working depth 9$D$ appendixes are as same as the former) can be expressed as the function of warp length$L_w$) in the model net, and can be converted into full-scale net as in the model net ($V_t$=$m$/$sec$) $D_{mA}$=-0.99 $e^{-1.42V_t}$+0.67$e^{-1359V_t}$$L_w$ $D_{mB}$=-.258$e^{-3.77V_t}$+1.16$e^{-3.15V_t$ $L^w$, in the full-scale net($V_t$=k't) $D_{fA}$=-29.28$e^{-0.32V_t}$+0.67$e^{-0.37V_t$$L_w$ $D_{fB}$=-69.10$e^{-0.81V_t}$+1.16$e^{-0.72V_t}$$L_w$. 4. Working depth was gradually shallowed according to the increase of the distance between paired boats.

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A study on the change of the views on E.M.T. profession of the E.M.T. college students (일부 전문대 응급구조학생의 응급구조전문직관의 변화에 대한 연구)

  • Kim, Hak-Soo;Choi, Eun-Sook;Kim, Jin-Hue;Shin, Dong-Min;Lee, In-Soo
    • The Korean Journal of Emergency Medical Services
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    • v.1 no.1
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    • pp.28-41
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    • 1997
  • The purpose of this study was to identify the change of perceptions related to E.M.T. profession of E.M.T. student and to provide the basic data for development of curriculum. The subjects of the survey were 216 students from 3 junior college by questionaire from November 25 to November 29, 1996 in Kwang-Ju, Cheong-Ju, and Kong-Ju. The results were analyzed using the SAS and can be summerized as follows : 1. The view on profession was a statistically significant difference inspecial knowledge & skill training (t=-1.686, P<.001), high income (t=-0.753, P<.05) 2. The view on competence as a E.M.T. was a statistically significant differncein sufficient professional knowledge on the E.M.T. (t=-1.144, P<.001), own's health (t=-0.808, P<.001), sincerity and responsibility (t=-1.429, P<.01), satisfaction and effort (t=-1.335, P<.01), boundary of affairs (t=-1.356, P<.01) 3. The view on E.M.T. profession was a statistically significant difference inprotect of pt. life & to relieve the pain (t=-2.388, P<.001) 4. The view on necessary knowledge of E.M.T. was a statistically significant difference in patient assessment (t=-2.168, P<.001), ACLS (t=1.678, P<.001), hemorrhage & shock (t=-3.252, P<.001), trauma (t=-4.284, P<.001), cardiopulmonary disturbance (t=-2.897, P<.001), acute abdomen (t=-4.284, P<.001), neonatal disease (t=-4.032, P<.001), OBGY disease(t=-4.151, P<.001), emergency delivery (t=-2.825, P<.001), infectious disease (t=-2.930, P<.001), environmental emergency (t=-3.123, P<.05), recording(t=2.22, P<.05) 5. The view on ideology of E.M.T. was a statistically significant difference in belief & faith (t=-2.344, P<.001), knowing of own (t=-2.142, P<.01), humanity (t=-2.581, P<.05), knowing of patient (t=-2.079, P<.05).

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Signal transduction of C-terminal phosphorylation sites for equine follicle stimulating hormone receptor (eFSHR)

  • Seong, Hoon-Ki;Choi, Seung-Hee;Byambaragchaa, Munkhzaya;Min, Kwan-Sik
    • Journal of Animal Reproduction and Biotechnology
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    • v.35 no.2
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    • pp.155-162
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    • 2020
  • Equine follicle stimulating hormone receptor (eFSHR) has a large extracellular domain and an intracellular domain containing approximately 10 phosphorylation sites within the G protein-coupled receptor. This study was conducted to analyze the function of phosphorylation sties at the eFSHR C-terminal region. We constructed a mutant of eFSHR, in which the C-terminal cytoplasmic tail was truncated at residue 641 (eFSHR-t641). This removed 10 potential phosphorylation sites from the C-terminal region of the intracellular loop. The eFSHR-wild type (eFSHR-wt) and eFSHR-t641 cDNAs were subcloned into the pCMV-ARMS1-PK2 expression vector. These plasmids were transfected into PathHunter CHO-K1 Parental cells expressing β-arrestin 2 enzyme acceptor fusion protein and analyzed for agonist-induced cAMP response. The cAMP response in cells expressing eFSHR-t641 was lower than the response in cells expressing eFSHR-wt. EC50 values of eFSHR-wt and eFSHR-t641 were 1079 ng/mL and 1834 ng/mL, respectively. eFSHR-t641 was approximately 0.58-fold compared with that of eFSHR-wt. The maximal response in eFSHR-wt and eFSHR-t641 was 24.7 nM and 16.7 nM, respectively. The Rmax value of phosphorylation sites in eFSHR-t641 was also decreased to approximately 68.4% of that in eFSHR-wt. The collective data implicate that the phosphorylation sites in the eFSHR C-terminal region have a pivotal role in signal transduction in PathHunter CHO-K1 cells, and indicate that β-arrestin is involved in coupling the activated receptors to the internalization system.

GENERALIZED EULER POWER SERIES

  • KIM, MIN-SOO
    • Journal of applied mathematics & informatics
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    • v.38 no.5_6
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    • pp.591-600
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    • 2020
  • This work is a continuation of our investigations for p-adic analogue of the alternating form Dirichlet L-functions $$L_E(s,{\chi})={\sum\limits_{n=1}^{\infty}}{\frac{(-1)^n{\chi}(n)}{n^s}},\;Re(s)>0$$. Let Lp,E(s, t; χ) be the p-adic Euler L-function of two variables. In this paper, for any α ∈ ℂp, |α|p ≤ 1, we give a power series expansion of Lp,E(s, t; χ) in terms of the variable t. From this, we derive a power series expansion of the generalized Euler polynomials with negative index, that is, we prove that $$E_{-n,{\chi}}(t)={\sum\limits_{m=0}^{\infty}}\(\array{-n\\m}\)E_{-(m+n),{\chi}^{t^m}},\;n{\in}{\mathbb{N}}$$, where t ∈ ℂp with |t|p < 1. Some further properties for Lp,E(s, t; χ) has also been shown.

CONVERGENCE OF VISCOSITY APPROXIMATIONS TO FIXED POINTS OF NONEXPANSIVE NONSELF-MAPPINGS IN BANACH SPACES

  • Jung, Jong-Soo
    • East Asian mathematical journal
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    • v.24 no.1
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    • pp.81-95
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    • 2008
  • Let E be a uniformly convex Banach space with a uniformly $G{\hat{a}}teaux$ differentiable norm, C a nonempty closed convex subset of E, and $T\;:\;C\;{\rightarrow}\;E$ a nonexpansive mapping satisfying the weak inwardness condition. Assume that every weakly compact convex subset of E has the fixed point property. For $f\;:\;C\;{\rightarrow}\;C$ a contraction and $t\;{\in}\;(0,\;1)$, let $x_t$ be a unique fixed point of a contraction $T_t\;:\;C\;{\rightarrow}\;E$, defined by $T_tx\;=\;tf(x)\;+\;(1\;-\;t)Tx$, $x\;{\in}\;C$. It is proved that if {$x_t$} is bounded, then $x_t$ converges to a fixed point of T, which is the unique solution of certain variational inequality. Moreover, the strong convergence of other implicit and explicit iterative schemes involving the sunny nonexpansive retraction is also given in a reflexive and strictly convex Banach space with a uniformly $G{\hat{a}}teaux$ differentiable norm.

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E-DEPTHS AND T-CODEPTHS OF MODULES

  • Chung, Sang-Cho;Park, Jun-Seok
    • Bulletin of the Korean Mathematical Society
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    • v.35 no.2
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    • pp.363-374
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    • 1998
  • We investigate relationships of E-depths and T-codepths of modules in s short exact exact sequence. We give E-depths and T-codepths of some modules.

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