• Journal of Oral Medicine and Pain
• /
• 제40권3호
• /
• pp.102-109
• /
• 2015

Purpose: The purpose of this study was to assess the association between sleep disturbances and personality type. Methods: Five hundred twenty-four college students in Gyeonggi-do completed the Myers-Briggs Type Indicator (MBTI) and a questionnaire and collected data were analyzed by SAS 9.4 program. Results: Extroversion (E) type, sensation (S) type, and perceiving (P) type had significantly higher prevalence of insomnia than introversion (I) type (p<0.05), intuition (N) type (p<0.05), and judging (J) type (p<0.001), respectively. Tooth grinding, snoring and insomnia appeared to occur more frequently in feeling (F) type than in thinking (T) type. Tooth clenching, tooth grinding and snoring seemed to occur more frequently in S type than in N type. Insomnia occurred significantly the most frequently in sensation-feeling (SF) type (p<0.05). Tooth grinding and snoring seemed to occur the most frequently in SF type. A significantly increased percentage of sensation-perceiving (SP) type demonstrated insomnia (p<0.001). Tooth clenching, tooth grinding and snoring seemed to occur the most frequently in sensation-judging (SJ) type. Sensitive or nervous type of personality had significantly higher prevalence of insomnia than relaxed or general type of personality (p<0.01). A significantly increased percentage of subjects with bad general health status showed insomnia (p<0.0001). Tooth clenching and snoring seemed to occur the most frequently in subjects with bad general health status. A significantly decreased percentage of normal weight subjects demonstrated tooth grinding (p<0.05). Snoring occurred significantly the most frequently in overweight subjects (p<0.001). Tooth clenching showed significant correlation with stress (p<0.01) and personality (p<0.05). Snoring showed significant correlation with stress (p<0.05) and body weight (p<0.001). Insomnia showed significant correlation with stress (p<0.0001), personality (p<0.01), and general health status (p<0.0001). Conclusions: Sleep disturbances including tooth clenching and insomnia were associated with personality type and it is desirable to manage them considering personality type.

• 한국환경생태학회지
• /
• 제38권2호
• /
• pp.217-226
• /
• 2024

본 연구는 공기 중 음이온이 미세먼지(PM10, PM2.5) 정화에 미치는 영향을 파악하고, 식물이 공기 중 음이온 발생과 미세먼지 정화에 미치는 영향을 평가하기 위하여 음이온 발생요인별 음이온 발생량을 측정하고, 각 요인별, 식물 용적별 미세먼지 저감 모형을 구축하여 비교하였다. 음이온 발생요인별 특성은 Type N.I(Negative ion generator; 204,133.33ea/cm³) > Type P₃₀(Plant Vol. 30%; 362.55ea/cm³) > Type C(Control; 46.22ea/cm³)의 순으로 음이온 발생량을 살펴보면 무처리구에 비하여 음이온 발생기 처리구에서 약 4,417배, 식물 배치구에서 약 8배 많았다. 이에 따른 음이온 발생원별 미세먼지 저감 특성은 PM10에서 Type NI가 Type C에 비하여 정화효율이 2.52배, Type P30이 1.46배 높았으며, PM2.5의 경우, Type NI가 Type C에 비하여 정화효율이 2.26배, Type P30이 1.31배 높은 것으로 분석되었다. 식물의 용적별 미세먼지 정화 효율은 Type P₂₀(84.60분) > Type P₃₀(106.50분) = Type P₂₅(115.50분) = Type P₁₅(117.60분) > Type P₅(125.25분) = Type P₁₀(129.75분)의 순이었으며, 초미세먼지의 경우 Type P₂₀ (104.00분) > Type P₃₀(133.20분) = Type P₂₅(144.00분) = Type P₁₅(147.60분) > Type P₅(161.25분) = Type P₁₀ (168.00분)의 순이었다. 이렇게 음이온의 미세먼지 정화 능력과 식물의 미세먼지 정화능력을 정량적으로 분석하였으며, 향후 미세먼지 정화를 고려한 녹지계획 및 식물식재에 고려해야할 사항을 제안하였다.

• Korean Journal of Mathematics
• /
• 제26권1호
• /
• pp.23-41
• /
• 2018

The main aim of this paper is to prove some results related to the growth rates of composite entire and meromorphic functions on the basis of their relative (p, q)-th order, relative (p, q)-th lower order, relative (p, q)-th type and relative (p, q)-th weak type where p and q are any two positive integers.

• 한국수학교육학회지시리즈B:순수및응용수학
• /
• 제26권1호
• /
• pp.13-33
• /
• 2019

The main aim of this paper is to establish some comparative growth properties of composite entire functions on the basis of their relative (p, q)-th order, relative (p, q)-th lower order, relative (p, q)-th type, relative (p, q)-th weak type of entire function with respect to another entire function where p and q are any two positive integers.

• Journal of Microbiology and Biotechnology
• /
• 제10권4호
• /
• pp.441-448
• /
• 2000

The production and cation flux-mediated activation of the P-type ATPase in Helicobacter pylori was investigated. Using the polymerase chain reaction (PCR), the proton pump genotype of H. pylori was found to be positive for both F-type and P-type ATPases. Yet, their production in terms of enzyme specific activity varied substantially depending on H. pylori strains, ranging over 3-fold. Its main constituent appeared to be the P-type ATPase pool, in contrast to other common bacterial compositions. Interestingly, the F-type ATPase was observed only when intact H. pyloricells were exposed to pH 4.5 or above (37$^{\circ}C$ for 1 h). In contrast, significant amounts of the P-type ATPase still remained after 1 h of cell treatment even at pH below 4.5. By enriching the acidic medium with RPMI(pH 3.0), the P-type ATPase was stabilized, accompained by inactivation of the F-type ATPase. Using H. pylori membrane vesicles, it was found that ammionia-mediated cation flux increased the rate of ATP hydrolysis by the P-type ATPase. Accordingly, these data strongly suggest that the P-type ATPase is involved or functions as an effective regulator for the cation flux across the H. pylori membrane, thereby reducing the risk of excess proton influx.

• Korean Journal of Mathematics
• /
• 제28권4호
• /
• pp.819-845
• /
• 2020

In this paper, we established sum and product theorems connected to (p, q)-𝜑 relative Gol'dberg type and (p, q)-𝜑 relative Gol'dberg weak type of entire functions of several complex variables with respect to another one under somewhat different conditions.

• 한국수학교육학회지시리즈B:순수및응용수학
• /
• 제29권1호
• /
• pp.69-91
• /
• 2022

In the paper we establish some new results depending on the comparative growth properties of composite transcendental entire and meromorphic functions using relative (p, q, t)L-th order, relative (p, q, t)L-th type and relative (p, q, t)L-th weak type and that of Wronskian generated by one of the factors.

• Korean Journal of Mathematics
• /
• 제27권1호
• /
• pp.93-117
• /
• 2019

In this paper we wish to study some growth properties of entire functions represented by a vector valued Dirichlet series on the basis of (p, q)-th relative Ritt order, (p, q)-th relative Ritt type and (p, q)-th relative Ritt weak type where p and q are integers such that $p{\geq}0$ and $q{\geq}0$.

• 한국수학교육학회지시리즈B:순수및응용수학
• /
• 제25권4호
• /
• pp.297-336
• /
• 2018

In this paper we wish to establish some basic properties of entire functions represented by a vector valued Dirichlet series on the basis of (p, q)-th relative Ritt order, (p, q)-th relative Ritt type and (p, q)-th relative Ritt weak type where p and q are integers such that $p{\geq}0$ and $q{\geq}0$.

• 한국작물학회지
• /
• 제34권4호
• /
• pp.384-389
• /
• 1989

한국산 미곡 통일형과 자포니카형의 형태적 특성을 구명하기 위하여 1986년에 3개 작물시험장(수원, 밀양 및 이리)에서 생산된 통일형 13품종과 자포니카형 10품종을 공시재료로 하여 다음과 같은 결과를 얻었다. 천입중은 벼, 현미, 백미 모두 두 형간에 유의성이 없었으나 벼와 현미의 무게 차 즉 왕겨층의 무게와 현미와 백미의 무게 차 즉 미강층의 무게에서는 각각 P<2.859** 및 4.316***으로 유의성을 보였으며 왕겨층은 통일형이 미강층은 자포니카형이 컸다. 벼, 현미 및 백미의 입폭은 두 형간에 각각 P<5.189***, 5.289*** 및 5.988*** 그리고 입장은 각각 P<3.016**, 4.419*** 및 5.492***으로 유의성을 보였으며, 입폭과 입두께는 자포니카형이 통일형보다 두꺼웠고, 입장은 통일형이 길었다. 입폭/입두께의 비에서 벼는 두 형간에 P<2.396*으로 유의성이 있었으나 현미와 백미는 유의성이 없었다. 입장/입폭비는 벼 : P<5.525***, 현미 : P<5.495***, 백미 : P<5.863***, 입장/입두께 비는 벼 : P<4.734***, 현미 : P<6.863***, 백미 P<8.425***로 유의성을 보였으며 이들 비는 모두 통일형이 컸다.