Zobrazeno 1 - 10
of 26
pro vyhledávání: '"I. I. Karpunin"'
Publikováno v:
Наука и техника, Vol 19, Iss 4, Pp 320-328 (2020)
A large variety of machine operating conditions leads to a difference in the wear rate even for their units being of the same type. Operational time terms of single-type units and machines are not the same, and therefore, numerical expressions of ope
Externí odkaz:
https://doaj.org/article/1dd754961e6140d69a3ec46bad8a0499
Publikováno v:
Наука и техника, Vol 18, Iss 5, Pp 409-415 (2019)
The paper shows that creation of materials with antibacterial and antifungal action presupposes an introduction of additives in them. One of the directions concerning fight against mold fungi is an inclusion of biocide additives having vegetable orig
Externí odkaz:
https://doaj.org/article/835ac7b00ade46ec961f1c53becc6aaf
Autor:
I. I. Karpunin
Publikováno v:
Наука и техника, Vol 16, Iss 5, Pp 432-436 (2017)
Application of waste liquor at a rate of 25% that contains the used quinone and is applied as an additive has shown that qualitative characteristics of the obtained desired product do not differ from a product while using fresh quinone for pulping of
Externí odkaz:
https://doaj.org/article/55e276c773864b6b8d838fe06afc66a8
Publikováno v:
Наука и техника, Vol 16, Iss 1, Pp 49-56 (2017)
A method for measuring polymer chemical resistance by dipping specimens in chemical reagents is a standard investigation procedure used in chemical industry (Standards ASTM D543, ISO 155). Such method has been used only for comparative evaluation of
Externí odkaz:
https://doaj.org/article/865c54214e1f4086a224c639242978b0
Publikováno v:
Наука и техника, Vol 0, Iss 5, Pp 53-59 (2015)
The executed investigations have made it possible to ascertain that a morphological structure of starch granules mainly determine technological peculiarities of starch isolation from raw material, its modification and its later use. Morphological str
Externí odkaz:
https://doaj.org/article/7426cad236614752bb90b1dba4824640
Autor:
I. I. Karpunin
Publikováno v:
Наука и техника, Vol 0, Iss 2, Pp 57-62 (2013)
The paper proposes schemes for introduction and regeneration of added salt during wood alkaline pulping under industrial conditions. Reactions proceeding with blue copper and leachates at their burning have been determined in the paper.
Externí odkaz:
https://doaj.org/article/a057195033fd434e927f26546cbc4658
Autor:
I. I. Karpunin
Publikováno v:
Наука и техника, Vol 0, Iss 6, Pp 46-48 (2013)
A method has been developed to improve paper qualitative characteristics which is used for manufacturing of packaging. It has been determined that while adding sulfate cellulose obtained from low-grade short flax in paper composition qualitative char
Externí odkaz:
https://doaj.org/article/548625fa3bd5407b8f31287bea9137d8
Autor:
I. I. Karpunin
Publikováno v:
Наука и техника, Vol 0, Iss 6, Pp 77-79 (2012)
Process of alkaline pulping in the presence of salts of some metals having mixed valence has been simulated on the basis of the executed investigations. The paper reveals that optimization of alkaline (sulphate) pulping depends on chemical nature and
Externí odkaz:
https://doaj.org/article/93b58a6bd88547f8ba56258277c3f5d7
Publikováno v:
Наука и техника, Vol 0, Iss 5, Pp 65-67 (2012)
The paper investigates an influence of component quantity (lignin, cellulose and hemicellulose) on qualitative (physical and mechanical) indices of waste-paper in relation to its storage period and weather conditions. It has been established that whi
Externí odkaz:
https://doaj.org/article/2e8a73136d3e4d5981d669dbac06fa7f
Publikováno v:
Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika, Vol 0, Iss 6 (2011)
An analysis on usage of vegetal wastes for energy production is presented in the paper.The paper reveals that logging debris and linen chaffs are considered as a prospective raw material for energy production in theRepublicofBelarus.
Externí odkaz:
https://doaj.org/article/9b458f88e1574ea8973eb90af5ce942d