Noisy Kuramoto-Sivashinsky equation for an erosion model

We derive the continuum equation for a discrete model for ion sputtering. We follow an approach based on the master equation, and discuss how it can be truncated to a Fokker-Planck equation and mapped to a discrete Langevin equation. By taking the continuum limit, we arrive at the Kuramoto-Sivashinsky equation with a stochastic noise term.Comment: latex (w/ multicol.sty), 4 pages; to appear in Physical Review E (Oct 1996

ОСОБЕННОСТИ КЛИНИЧЕСКОГО ТЕЧЕНИЯ ОСТРЫХ РЕСПИРАТОРНЫХ ЗАБОЛЕВАНИЙ, ВЫЗВАННЫХ АДЕНОВИРУСАМИ ЭПИДЕМИЧЕСКИ ЗНАЧИМЫХ СЕРОТИПОВ

The objective: To investigate etiological structure of adenoviral diseases in young people from organized groups and the clinical features of acute respiratory disease caused by different serotypes of adenovirus were identified.Materials and methods: A total 382 patients with adenovirusinfections were investigated. Virus isolation from nasopharyngeal swabs was carried out in cell cultures Vero, HeLa, Hep-2. Typing of adenoviruses was performed by virus neutralization test with polyclonal rabbit subtype specific sera. The average (M), standard deviation (SD) and frequency of occurrence (%) of clinical signs (respiratory and non-respiratory syndromes of pneumonia, protracted and recurrent course was calculated. Significance of the differences (p<0,05) of average frequency of cases compared to independent group of patients was evaluated by Student t-test and criterion φ2 (phi – square) Fischer, respectively.Results: As result of investigation 199 adenovirus strains (52,1 %) were isolated. 183 strains were serotyped: 64 (32,2 %) – 3 serotype, 42 (21,1 %) – 4 serotype, 38 (19,1 %) – 7 serotype, 15 (7,5 %) – 5 serotype, 11 (5,5 %) – 21 serotype, 8 (4,0 %) – 1 serotype, 3 (1,5 %) – 2 serotype, 2 (1,0 %) – 6 serotype. In assessing the features of the clinical course of adenoviral infection caused by the most actual serotypes (3, 4, 7) of adenovirus revealed that duration of diseases caused by serotype 7 was significantly longer and remained febrile fever (4,3±2,74 days, p<0,05), rhinitis (9,4±6,01 days, p<0,05), pharyngitis (7,9±2,87 days, p<0,05), laryngitis (7,3±2,87 days, p<0,05) and bronchitis (11,8±8,03 days, p<0,05), tonsillitis (63,0%, φ2=12,6, p<0,05), lymphadenopathy (63,0%, φ2=4,1, p<0,05), and pneumonia (34,2%, φ2=3,84, p<0,05) were registered significantly more frequently.Conclusion: The study showed that the adenoviruses of 3, 4 and 7 serotype have the greatest epidemiological significance. Clinical features of adenoviral diseases caused by 7 serotype were manifested in more frequent registration of non-respiratory syndromes and the development of pneumonia.Цель – исследовать этиологическую структуру аденовирусных заболеваний у лиц молодого возраста из организованных коллективов и выявить особенности клинического течения ОРЗ, вызванных различными серотипами аденовирусов.Материалы и методы: обследовано 382 больных аденовирусными заболеваниями. Выделение вирусов из носоглоточных мазков проводили на культурах клеток Vero, HeLa, Hep-2. Типирование аденовирусов проводили в реакции нейтрализации с поликлональными субтипоспецифическими кроличьими антисыворотками. Рассчитывали среднюю (M), стандартное отклонение (SD) и частоту встречаемости (%) клинических признаков (респираторных и нереспираторных синдромов, развития пневмоний, затяжного и рецидивирующего течения). Достоверность различия (p<0,05) средней, частоты встречаемости случаев в сравниваемых независимых группах оценивали по t-критерию Стьюдента и критерию φ2 (фи-квадрат) Фишера соответственно.Результаты: выделено 199 штаммов аденовирусов (52,1%). Серотипировано 183 штамма: 64 (32,2%) – 3-го серотипа, 42 (21,1%) – 4-го серотипа, 38 (19,1%) – 7-го серотипа, 15 (7,5%) – 5-го серотипа, 11 (5,5%) – 21-го серотипа, 8 (4,0%) – 1-го серотипа, 3 (1,5%) – 2-го серотипа, 2 (1,0%) – 6-го серотипа. При оценке особенностей клинического течения аденовирусных заболеваний, вызванных актуальными серотипами (3, 4, 7) аденовирусов, выявлено, что при заболеваниях, вызванных 7-м серотипом, достоверно дольше сохранялись фебрильная лихорадка (4,3±2,74 дня, p<0,05), ринит (9,4±6,01 дня, p<0,05), фарингит (7,9±2,87, p<0,05), ларингит (7,3±2,87, p<0,05) и бронхит (11,8±8,03, p<0,05), достоверно чаще наблюдали тонзиллит (63,0%, φ2=12,6, p<0,05), лимфаденопатию (63,0%, φ2=4,1, p<0,05) и пневмонию (34,2%, φ2=3,84, p<0,05).Заключение: исследование показало, что наибольшей эпидемиологической значимостью обладают аденовирусы 3-го, 4-го и 7-го серотипов, клиническими особенностями аденовирусных заболеваний, вызванных 7-м серотипом вируса, являются более частая регистрация нереспираторных синдромов и развитие пневмонии

Features of a clinical course of the acute respiratory diseases caused by adenoviruses of epidemic significant serotypes

The objective: To investigate etiological structure of adenoviral diseases in young people from organized groups and the clinical features of acute respiratory disease caused by different serotypes of adenovirus were identified.Materials and methods: A total 382 patients with adenovirusinfections were investigated. Virus isolation from nasopharyngeal swabs was carried out in cell cultures Vero, HeLa, Hep-2. Typing of adenoviruses was performed by virus neutralization test with polyclonal rabbit subtype specific sera. The average (M), standard deviation (SD) and frequency of occurrence (%) of clinical signs (respiratory and non-respiratory syndromes of pneumonia, protracted and recurrent course was calculated. Significance of the differences (p<0,05) of average frequency of cases compared to independent group of patients was evaluated by Student t-test and criterion φ2 (phi – square) Fischer, respectively.Results: As result of investigation 199 adenovirus strains (52,1 %) were isolated. 183 strains were serotyped: 64 (32,2 %) – 3 serotype, 42 (21,1 %) – 4 serotype, 38 (19,1 %) – 7 serotype, 15 (7,5 %) – 5 serotype, 11 (5,5 %) – 21 serotype, 8 (4,0 %) – 1 serotype, 3 (1,5 %) – 2 serotype, 2 (1,0 %) – 6 serotype. In assessing the features of the clinical course of adenoviral infection caused by the most actual serotypes (3, 4, 7) of adenovirus revealed that duration of diseases caused by serotype 7 was significantly longer and remained febrile fever (4,3±2,74 days, p<0,05), rhinitis (9,4±6,01 days, p<0,05), pharyngitis (7,9±2,87 days, p<0,05), laryngitis (7,3±2,87 days, p<0,05) and bronchitis (11,8±8,03 days, p<0,05), tonsillitis (63,0%, φ2=12,6, p<0,05), lymphadenopathy (63,0%, φ2=4,1, p<0,05), and pneumonia (34,2%, φ2=3,84, p<0,05) were registered significantly more frequently.Conclusion: The study showed that the adenoviruses of 3, 4 and 7 serotype have the greatest epidemiological significance. Clinical features of adenoviral diseases caused by 7 serotype were manifested in more frequent registration of non-respiratory syndromes and the development of pneumonia

Finite basis problems and results for quasivarieties

Let K be a finite collection of finite algebras of finite signature such that SP( K ) has meet semi-distributive congruence lattices. We prove that there exists a finite collection K 1 of finite algebras of the same signature, K1⊇K , such that SP( K 1) is finitely axiomatizable.We show also that if HS(K)⊆SP(K) , then SP( K 1) is finitely axiomatizable. We offer new proofs of two important finite basis theorems of D. Pigozzi and R. Willard. Our actual results are somewhat more general than this abstract indicates

Compton scattering from the free and bound proton above pi-threshold

The differential cross sections for Compton scattering from the proton have been measured at MAMI with three different detector setups. There is a good agreement among all the results. The theoretical calculation based on dispersion relations shows that there is no drastic change necessary in the parameters of this approach