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THE BRÜCK CONJECTURE AND ENTIRE FUNCTIONS SHARING POLYNOMIALS WITH THEIR κ-TH DERIVATIVES
Lu, Feng,Yi, Hongxun Korean Mathematical Society 2011 대한수학회지 Vol.48 No.3
The purpose of this paper is twofold. The first is to establish a uniqueness theorem for entire function sharing two polynomials with its ${\kappa}$-th derivative, by using the theory of normal families. Meanwhile, the theorem generalizes some related results of Rubel and Yang and of Li and Yi. Several examples are provided to show the conditions are necessary. The second is to generalize the Br$\"{u}$-ck conjecture with the idea of sharing polynomial.
THE BRUCK CONJECTURE AND ENTIRE FUNCTIONS SHARING POLYNOMIALS WITH THEIR k-TH DERIVATIVES
Feng Lu,Hongxun Yi 대한수학회 2011 대한수학회지 Vol.48 No.3
The purpose of this paper is twofold. The rst is to establish a uniqueness theorem for entire function sharing two polynomials with its k-th derivative, by using the theory of normal families. Meanwhile, the theorem generalizes some related results of Rubel and Yang and of Li and Yi. Several examples are provided to show the conditions are necessary. The second is to generalize the Bruck conjecture with the idea of sharing polynomial.
The effects of cement thickness and cement shade on the final color of lithium disilicate crowns
Yiğit Yamalı,Merve Bankoğlu Güngör,Seçil Karakoca Nemli,Bilge Turhan Bal 대한치과보철학회 2023 The Journal of Advanced Prosthodontics Vol.15 No.2
Purpose. The aim of this study is to evaluate the effect of resin cement color, cement thickness, and thermocycling on the final color of monolithic lithium disilicate crowns. Materials and methods. A total of ninety prepared central incisors of typodont teeth were restored with lithium disilicate crowns which have different cement thicknesses (40 µm, 80 µm, and 120 µm) and cement shades (clear, yellow, and white). Color parameters of restorations were measured with a spectrophotometer in three different steps 1) before cementing 2) after cementing and 3) after thermocycling with 10000 cycles. Color differences (∆E00) were calculated with the CIEDE2000 formula and evaluated according to perceptibility (0.8) and acceptability (1.8) thresholds. The ∆E00 data were analyzed by using two-way ANOVA before and after thermocycling (α = .05). Results. There was no interaction between the cement shade and the cement thickness factors. After cementation, the mean ∆E00 was under the perceptibility threshold in the group of 40 µm cement thickness and clear cement while it was between the perceptibility and acceptability thresholds (0.8 < ∆E00 < 1.8) for all other groups. After thermocycling, the ∆E00 values were between the perceptibility and acceptability thresholds for all experimental groups. Although there were no significant differences among the groups, thermocycling increased the color difference values. Conclusion. The cementation of restorations with clear, yellow, and white resin cements resulted in color differences with uncemented restorations except for the group cemented with clear cement in 40 µm cement thickness. All study groups revealed perceptible color change after thermocycling. [J Adv Prosthodont 2023;15:93-100]
Gökhan Gürkan,Özüm Atasoy,Nilsu Çini,İbrahim Halil Sever,Bahattin Özkul,Gökhan Yaprak,Cansın Şirin,Yiğit Uyanıkgil,Ceren Kızmazoğlu,Mümin Alper Erdoğan,Oytun Erbaş 대한신경외과학회 2023 Journal of Korean neurosurgical society Vol.66 No.5
Objective : This animal model aimed to compare the rat group that received brain irradiation and did not receive additional treatment (only saline) and the rat group that underwent brain irradiation and received Granulocyte colony stimulating factor (G-CSF) treatment. In addition, the effects of G-CSF on brain functions were examined by magnetic resonance (MR) imaging and histopathologically. Methods : This study used 24 female Wistar albino rats. Drug administration (saline or G-CSF) was started at the beginning of the study and continued for 15 days after whole-brain radiotherapy (WBRT). WBRT was given on day 7 of the start of the study. At the end of 15 days, the behavioral tests, including the three-chamber sociability test, open field test, and passive avoidance learning test, were done. After the behavioral test, the animals performed the MR spectroscopy procedure. At the end of the study, cervical dislocation was applied to all animals. Results : G-CSF treatment positively affected the results of the three-chamber sociability test, open-space test and passive avoidance learning test, cornu Ammonis (CA) 1, CA3, and Purkinje neuron counts, and the brain levels of brain-derived neurotrophic factor and postsynaptic density protein-95. However, G-CSF treatment reduced the glial fibrillary acidic protein immunostaining index and brain levels of malondialdehyde, tumor necrosis factor-alpha, nuclear factor kappa-B, and lactate. In addition, on MR spectroscopy, G-CSF had a reversible effect on brain lactate levels. Conclusion : In this first designed brain irradiation animal model, which evaluated G-CSF effects, we observed that G-CSF had reparative, neuroprotective and anti-neurodegenerative effects and had increased neurotrophic factor expression, neuronal counts, and morphology changes. In addition, G-CSF had a proven lactate-lowering effect in MR spectroscopy and brain materials.
Decellularization of Trachea With Combined Techniques for Tissue-Engineered Trachea Transplantation
Aysegul Batioglu-Karaaltin,Ercüment Ovali,Mehmet V Karaaltin,Murat Yener,Mehmet Yılmaz,Fatma Eyüpoğlu,Yetkin Zeki Yılmaz,Erol Rüştü Bozkurt,Necdet Demir,Esma Konuk,Ergun Süreyya Bozdağ,Özgür Yiğit,Har 대한이비인후과학회 2019 Clinical and Experimental Otorhinolaryngology Vol.12 No.1
Objectives. The purpose of this study is to shorten the decellularization time of trachea by using combination of physical, chemical, and enzymatic techniques. Methods. Approximately 3.5-cm-long tracheal segments from 42 New Zealand rabbits (3.5±0.5 kg) were separated into seven groups according to decellularization protocols. After decellularization, cellular regions, matrix and strength and endurance of the scaffold were followed up. Results. DNA content in all groups was measured under 50 ng/mg and there was no significant difference for the glycosaminoglycan content between group 3 (lyophilization+deoxycholic acid+de-oxyribonuclease method) and control group (P=0.46). None of the decellularized groups was different than the normal trachea in tensile stress values (P>0.05). Glucose consumption and lactic acid levels measured from supernatants of all decellularized groups were close to group with cells only (76 mg/dL and 53 mg/L). Conclusion. Using combination methods may reduce exposure to chemicals, prevent the excessive influence of the matrix, and shorten the decellularization time.
Identification of piRNAs in Hela cells by massive parallel sequencing
( Yi Lu Lu ),( Chao Li ),( Kun Zhang ),( Hua Qin Sun ),( Da Chang Tao ),( Yun Qiang Liu ),( Si Zong Zhang ),( Yong Xin Ma ) 생화학분자생물학회 (구 한국생화학분자생물학회) 2010 BMB Reports Vol.43 No.9
Piwi proteins and Piwi-interacting RNAs (piRNAs) have been implicated in transposon control in germline from Drosophila to mammals. To examine the profile of small RNA expression in human cancer cells and explore difference in small RNA transcriptome, small RNA libraries prepared from wildtype, HILI overexpressed and HILI knockdowned Hela cells were sequenced using Solexa technology. piRNAs and other repeat- associated small RNAs were observed in Hela cells. By using in situ hybridization, piR-49322 was localized in the nucleolus and around the periphery of nuclear membrane in Hela cells. Following the overexpression of HILI, the retrotransposon elements LINE1 was significantly repressed, while LINE1-associated small RNAs decreased in abundance. The present study demonstrated that HILI along with piRNAs plays a role in LINE1 suppression in Hela cancer cell line. [BMB reports 2010; 43(9): 635-641]
LU Pei-Yi 한국미술이론학회 2017 미술이론과 현장 Vol.0 No.24
1996년에 창설된 타이페이 비엔날레(TB)의 기획 메커니즘은 타이완 출신 큐레이터들의 공 동 기획 체제(1996)로부터 일본 출신의 단일 큐레이터 체제(1998), 그리고 해외 큐레이터와 국 내 큐레이터가 협업하는 이원 큐레이터 체제(2000-2010)를 거쳐서 다시 단일 큐레이터 체제 (2012-2016)으로 회귀하기까지 다양한 과정을 겪었다. 특히 최근 단계에서는 서구 출신의 큐레 이터들이 주도권을 장악해 왔다. 본 논문에서는 타이페이 비엔날레의 창립 당시 목표와 후대의 전개 양상 사이의 괴리 현상을 분석한다. 연구자는 이 행사가 타이완의 복합적인 지역 담론과 쟁 점들을 제대로 반영하지 못하고 단순히 동시대 국제 비엔날레의 추세를 수용하는데 머물러 왔 으며, 그 배경에 타이페이 비엔날레의 기획 메커니즘 뒤에 작용하고 있는 ‘자기 식민지화’의 경향 이 존재한다고 주장한다. Since its inception in 1996, the Taipei Biennial has endured a series of changes in its curatorial mechanism. It started with a collective of Taiwanese curators, but this arrangement was discarded in 1998 in favor of a single Japanese curator. The regime changed again in 2000 to a two-curator mechanism in which one international curator and one Taiwanese curator would work side by side. Then the single-curator mechanism was reinstituted in 2012 and has remained effective so far. This latest regime has predominantly been filled by curators from the West. This paper will investigate how the Biennial's curators, under different curatorial mechanisms, have interpreted – or reinterpreted – the Biennial's original mission. Its goal is to build the basis of judgment as to whether the Taipei Biennial has become a mere vehicle to pursue international trends under a self-colonizing framework while failing to deliver on its original mission of establishing cultural identity.