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Improved bowel preparation increases polyp detection and unmasks significant polyp miss rate

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World Journal of Clinical Cases 2015年第10期3卷 880-886页

作者： Ioannis S Papanikolaou Athanasios D Sioulas Nektarios Magdalinos iosif Beintaris Lazaros-Dimitrios Lazaridis Dimitrios Polymeros Chrysoula Malli George D Dimitriadis Konstantinos Triantafyllou Hepatogastroenterology Unit Second Department of Internal Medicine and Research InstituteAttikon University General HospitalMedical SchoolAthens University Salamina General Private Cinic

AIM: To retrospectively compare previous-day vs splitdose preparation in terms of bowel cleanliness and polyp detection in patients referred for polypectomy. METHODS: Fifty patients underwent two colonoscopies: one diagnostic in a private clinic and a second for polypectomy in a University Hospital. The latter procedures were performed within 12 wk of the index ones. Examinations were accomplished by two experienced endoscopists, different in each facility. Twenty-seven patients underwent screening/surveillance colonoscopy, while the rest were symptomatic. Previous day bowel preparation was utilized initially and splitdose for polypectomy. Colon cleansing was evaluated using the Aronchick scale. We measured the number of detected polyps, and the polyp miss rates ***: Excellent/good preparation was reported in 38 cases with previous-day preparation(76%) vs 46 with split-dose(92%), respectively(P = 0.03). One hundred and twenty-six polyps were detected initially and 169 subsequently(P < 0.0001); 88 vs 126 polyps were diminutive(P < 0.0001), 25 vs 29 small(P = 0.048) and 13 vs 14 equal or larger than 10 mm. The miss rates for total, diminutive, small and large polyps were 25.4%, 30.1%, 13.7% and 6.6%, respectively. Multivariate analysis revealed that split-dose preparation was significantly associated(OR, P) with increased number of polyps detected overall(0.869, P < 0.001), in the right(0.418, P = 0.008) and in the left colon(0.452, P = 0.02). CONCLUSION: Split-dose preparation improved colon cleansing, enhanced polyp detection and unmasked significant polyp miss rates.

关键词： Colonoscopy Bowel preparation Polyp miss rate Polyp detection Colorectal cancer

Vladimir Andreevich Steklov的遗产（I）

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数学译林 2015年第1期34卷 43-52页

作者： Nikolay Kuznetsov Tadeusz Kulczycki Mateusz Kwasnicki Alexander Nazarov Sergey Poborchi iosif Polterovich Barttomiej Siudeja

Vladimir Andreevich Steklov（斯捷克洛夫）——杰出的俄国数学家，今年人们庆祝他150周年诞辰——在数学史上发挥了重要作用．这主要是由于在Steklov的努力下，为全世界贡献了诸如***（罗巴切夫斯基），***（切比雪夫）和***（李雅普... 详细信息

Vladimir Andreevich Steklov（斯捷克洛夫）——杰出的俄国数学家，今年人们庆祝他150周年诞辰——在数学史上发挥了重要作用．这主要是由于在Steklov的努力下，为全世界贡献了诸如***（罗巴切夫斯基），***（切比雪夫）和***（李雅普诺夫）。那样的数学大师的俄罗斯数学学派——尽管有政治上的种种困难——从革命中幸存下来并继续得到蓬勃发展。

关键词： Chebyshev Lyapunov 遗产罗巴切夫斯基李雅普诺夫切比雪夫数学学派数学大师

Molecular Transformation of C-, Si- and Ge-tetrachlorides in Liquid Phase

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材料科学与工程（中英文A版） 2013年第4期3卷 274-277页

作者： iosif Grinvald Ivan Yurievich Kalagaev Andrey Vorotyntsev Evgenia Sytyagina Department of Chemistry Nizhny Novgorod State Technical University of R.E. Alekseev Nizhny Novgorod 603950 Russia

The FTIR study of liquid tetrachlorides of carbon, silicon and germanium indicates the presence of additional absorbance, which is not predicted by theory of normal vibrations. The behavior of bands, as well as heavy masses of oscillating atoms disprove the anharmonic nature of that absorbance, and it should mean the change of the molecular symmetry and bonds order in liquid phase. DFT quantum chemical calculations verify such assignment and indicate the step-type transformation of initial molecule with quite low energy barriers.

关键词：分子对称性四氯化物液相转化锗硅 FTIR 振动理论

Low Temperature IR Study of Shape Transition in Carbon-, Silicon-and Germanium Tetrachlorides

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材料科学与工程（中英文A版） 2013年第8期3卷 554-559页

作者： iosif Isaevich Grinvald Ivan Yurievich Kalagaev Andrei Vladimirovich Vorotyntsev Ilya VladimirovichVorotyntsev Eugenia Alekseevna Sutyagina Ivan Alexandrovich Spirin Nizhny Novgorod State Technical University Nizhny Novgorod 603950 Russia

The IR data in 20-296 K temperatures interval for carbon-, silicon- and germanium tetrachlorides are given. It is shown that the spectral picture of bands, appearing in higher frequencies region relatively to element-chlorine stretching, considerably changes at the temperature variation and therefore can be assigned to the vibrations of different molecular shapes. The interpretation of the obtained results based on the suggested model of transformation in the structure of tetrachlorides. This transformation leads to the arising of an active chlorine atom in molecules of element-tetrachlorides.

关键词：四氯化物分子形状红外光谱中碳低温锗硅温度区间