A New Type of Glycosidic Linkage: An Open-Chain Acetal-LinkedN-Acetylgalactosamine in the Core Part of the Lipopolysaccharides fromProteus Microorganisms

Author(s):  
Evgeny Vinogradov ◽  
Klaus Bock
2002 ◽  
Vol 55 (2) ◽  
pp. 61 ◽  
Author(s):  
E. Vinogradov ◽  
Z. Sidorczyk ◽  
Y. A. Knirel

The lipopolysaccharide (LPS) core structure was studied in seven rough strains of Proteus and 26 smooth strains belonging to various Proteus O-serogroups. All LPSs share a common heptasaccharide fragment, which includes two Kdo, three Hep, one Glc, and one GalA residue. Core structures differ between strains and within each strain in the presence of a variety of additional monosaccharides and non-sugar substituents. In many strains, the LPS includes a cyclic acetal of GalNAc in the open-chain form, which builds up a new type of linkage between monosaccharides. The covalent linkage of aliphatic polyamines, e.g. putrescine and spermidine, to the LPS was confirmed for the first time and the location of the amines at the carboxyl group of a GalA residue established. Analyses revealed peculiar features of the core structure, which are characteristic of P. mirabilis on one hand and P. vulgaris and P. penneri on the other hand.


2015 ◽  
Vol 719-720 ◽  
pp. 561-566
Author(s):  
Yong Qing Gao ◽  
Dan Shanng

Firstly, this paper analyzes the significance and demand of intelligent power. Then a solution of home intelligent power system based on ZigBee is proposed. Hardware components of the solution proposed in this work mainly consists of AT91SAM9G20 as the core of the home gateway controller, CC430F6137 as the core of the network node of intelligent power and construction of intelligent home network system. This paper mainly introduces a new type of home intelligent power consumption network node, which realizes the measurement of electric power parameter, monitoring, overload protection and timing control, the communication between home gateway and network node through ZigBee protocol, the intelligent household electricity. By testing and using, it can meet the aspects of everyday life needs of user in convenient life, intelligent life and energy-saving, etc. It brings great commercial return and technical value to the development and application of intelligent home in future, as well as far-reaching impact to improving the quality of intelligent home services.


2012 ◽  
Vol 490-495 ◽  
pp. 594-597
Author(s):  
Cheng Qun Li ◽  
Liang Gao

This paper introduces a new type of automatic steel bundling machine for bundling process, which includes a pneumatic action process, mainly do some researches on the pneumatic control system. The system chooses PLC as the core control component, puts forward the hardware of control system and control flow. Eventually we have been designed the control program.


2012 ◽  
Vol 166-169 ◽  
pp. 3277-3281
Author(s):  
Min Tong

Abstract. Connection joint with penetrated diaphragm, which is better for the stressing state of the welding connection, is a new type joint for the beam and column connection. Static test and pseudo-static test are put to 17 crossing joints. The stress distribution of the steel beam and the penetrated diaphragm are discussed. The experiment shows that the penetrated diaphragm transfer most tension force of the steel beam’s upper flange to the core region of the joint, which could effectively decrease the stress and strain gradient within the connection area of the steel beam’s upper flange and steel tube column. As the result, the shear force of the core region is decreased. The front weld is avoided being surfing great tension. The ductility of the joint and the energy dissipation capacity of the structure are then increased. The type and the size of the penetrated diaphragm show great affection to the stress distribution of steel beam and penetrated diaphragm. The study achievement enriches the joint connection type of the composite structure with concrete- filled steel tube.


2021 ◽  
Vol 248 ◽  
pp. 01054
Author(s):  
Zhigang Wang ◽  
Yun Xiang ◽  
Ziqi Yi ◽  
Longfei He ◽  
Mingjie Chen ◽  
...  

Insulation pull rods are commonly used tools and instruments in the replacement of insulators for live work. Traditional hard insulated pull rods are difficult to transport and assemble due to their large deflection, especially due to the long and heavy weight of insulated pull rods used in UHV live operations, the difficulties in the above links are more obvious. In view of the existing problems in the use of the existing insulated pull rods, by studying the overall processing type, the soft pull rod weaving process, the technology of tightly combining the core rod and the protective cover, the technology of connecting the core rod and the metal, etc., a new type suitable for live transmission lines has been developed. Large-tonnage soft insulated pull rod for operation. Effectively solve a series of problems caused by the large deflection of the hard insulated pull rod.


Author(s):  
M.B. Rarenko ◽  

The article considers the story by Henry James (1843 – 1916) «The Turn of the Screw» (1898 – first edition, 1908 – second edition) in connection with the emergence of a new type of narrator in the writer's late prose. The worldview and creative method of H. James are formed under the influence of the philosophy of pragmatism, which became widespread at the turn of the XIX-XX centuries thanks to the works of the writer's elder brother, the philosopher William James (1842 – 1910). The core of pragmatism is the pluralistic concept of William James based on the assumption that knowledge can be realized from very limited, incomplete, and inadequate «points of view» and this leads to the statement that the absolute truth is essentially unknowable. The epistemological statements of William James's theory is that the content of knowledge is entirely determined by the installation of consciousness, and the content of the truth in this case depends on the goals and experience of the human, i.e. the central starting point is the consciousness of the person. Henry James not only creates works of art, but also sets out in detail the principles of his work both on the pages of fiction works of small and large prose, putting them in the mouths of their characters – representatives of the world of art, and in the prefaces to his works of fiction, as well as in critical works.


Author(s):  
Olga Cwiková ◽  
Vlastimil Dohnal ◽  
Tomáš Komprda

Counts of lactic acid bacteria (LAB), total anaerobes and enterococci were determined in the course of ripening in the edge part (E) and the core part (C) of Dutch-type semi-hard cheese produced with different fat content (30 and 45 %) by two different producers (H and R) using two different starter cultures (L and Y). Counts of LAB at the beginning of ripening (day 0) in H producer´s samples were higher (P < 0,01) in comparison with the R producer´s ones. Count of enterococci was the highest (P < 0,05) at the end of the ripening (176th day) in sample R30YE. Higher (P < 0,01) enterococci counts were in R producer´s cheeses (in comparison with the H producer´s ones). Enterococci contamination was higher (P < 0,05) in E-samples than C-samples. Content of the sum of all BA in cheese was negatively correlated (P < 0,05) with counts of lactic acid bacteria (r = –0,24) and counts of total anaerobes (r = –0,23). No correlation between the sum of BA content and enterococci counts was found.


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