SPIRAL COLUMNS AND FRENCH LATE GOTHIC ORDER. PART 1. BACKGROUND OF THE SPIRAL FORM IN EUROPEAN ARCHITECTURE

Author(s):  
М.И. Позднякова
Author(s):  
A. R. Crooker ◽  
W. G. Kraft ◽  
T. L. Beard ◽  
M. C. Myers

Helicobacter pylori is a microaerophilic, gram-negative bacterium found in the upper gastrointestinal tract of humans. There is strong evidence that H. pylori is important in the etiology of gastritis; the bacterium may also be a major predisposing cause of peptic ulceration. On the gastric mucosa, the organism exists as a spiral form with one to seven sheathed flagella at one (usually) or both poles. Short spirals were seen in the first successful culture of the organism in 1983. In 1984, Marshall and Warren reported a coccoid form in older cultures. Since that time, other workers have observed rod and coccal forms in vitro; coccoid forms predominate in cultures 3-7 days old. We sought to examine the growth cycle of H. pylori in prolonged culture and the mode of coccoid body formation.


2020 ◽  
Vol 1687 ◽  
pp. 012037
Author(s):  
T A Suetina ◽  
O N Chernykh ◽  
A V Burlachenko ◽  
D D Koroteev

Author(s):  
Wu Shou-Sheng ◽  
Wang Hua-Fang ◽  
Li Li

Three types of 12-orifice mixing cruciform sampling probes, i.e. the sampling orifices with or without stub pipes and arranged in spiral form or on three radii, and one single orifice traversing probe were used to investigate the sampling representativeness in the measurement of gas turbine emissions. The results obtained in the experiment show that the distribution of carbon monoxide, CO, and smoke number, S.N., may have certain relations with the distribution of fuel and air in the combustor, and the three types of probes mentioned, the angular position of the cruciform probe and the manner of extracting sample off the mixing probe can make a deviation of less than 1 S.N. for smoke and about 5% for carbon monoxide.


1997 ◽  
pp. 90-118
Author(s):  
Peter Marshall

2015 ◽  
Vol 3 (2) ◽  
pp. 46
Author(s):  
Nirbhay Kumar Sinha

<p>In this paper, we normalised the second-order part of the Hamiltonian of the problem. The problem is generalised in the sense that fewer massive primary is supposed to be an oblate spheroid. By photogravitational we mean that both primaries are radiating. With the help of Mathematica, H<sub>2</sub> is normalised to H<sub>2</sub> = a<sub>1</sub>b<sub>1</sub>w<sub>1</sub> + a<sub>2</sub>b<sub>2</sub>w<sub>2</sub>. The resulting motion is composed of elliptic motion with a short period (2p/w<sub>1</sub>), completed by an oscillation along the z-axis with a short period (2p/w<sub>2</sub>).</p>


Revista Trace ◽  
2018 ◽  
pp. 111
Author(s):  
Cristina Amescua Chávez

En este artículo se analizará el tema de la violencia como causa y consecuencia del secuestro virtual buscando integrar sus dimensiones tanto individuales o personales, como familiares y colectivas. Desde una perspectiva social se dará cuenta de las diversas interacciones entre los factores que se entrelazan en este nuevo fenómeno. La violencia será entendida aquí como un ciclo continuo que se reproduce a sí mismo en forma de espiral. Para el análisis se utilizarán datos cuantitativos recabados tanto en instancias gubernamentales como a través de organismos de la sociedad civil, así como información cualitativa proporcionada por un estudio de caso de un secuestro virtual.Abstract: This article analyzes violence both as a cause and as a consequence of virtual kidnapping seeking to integrate individual and collective dimensions. From a social perspective, visibility will be given to the several interactions present in this new phenomenon. Violence will be understood as a continuous cycle reproducing itself constantly but in a spiral form. The analysis will draw from quantitative data collected among official sources as well as non governmental organizations, but it will also include a qualitative perspective build a case study of a specific virtual kidnapping.Résumé : Cet article analyse la violence comme cause et effet du kidnapping virtuel, en prenant en compte ses dimensions individuelles et collectives. Dans une perspective sociale, nous examinons les diverses interactions et facteurs en jeu dans ce nouveau phénomène. La violence est ici comprise comme un cycle continu qui se reproduit luimême sous la forme d’une spirale ascendante. L’analyse part de données quantitatives provenant aussi bien d’institutions gouvernementales que d’organismes de la société civile, ainsi que de données qualitatives fournies par une étude de cas d’un kidnapping virtuel.


2014 ◽  
Vol 2 (3) ◽  
pp. 53-63
Author(s):  
Irina Yurievna Klychkova ◽  
Mikhail Pavlovich Konyukhov ◽  
Yuri Alexeevich Lapkin

Congenital clubfoot deformity takes the 2 nd place among the malformations of the muskuloskeletal system and is observed in 4-5 ‰ of newborn. More often the deformity is bilateral, in 20 % of cases it is associated with other developmental disorders and is frequently seen in different syndromes. Clubfoot classifications are variable and are constantly improved according to the practical needs. It is generally assumed that clubfoot is a polyetiological disease. The main theories of its development are congenital (genetic), mechanical and neuromuscular. The majority of specialists consider that clubfoot formation is due to dysplastic process with the predominant foot and shin lesion. Bone, neuromuscular or vascular system hypoplasia predominate depending on the severity of the deformity. Evolution of the clubfoot treatment methods occurs in a spiral-form fashion from the conservative management to total releases and bone reconstructions, from low-invasive to excessively radical surgery. At present the spiral turn has stopped at the consisting of many stages low-invasive method of clubfoot correction developed by I. Ponseti which is considered now to be the golden standard of treatment.


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