7 research outputs found

    Antibacterial activity of free or encapsulated selected phenylpropanoids against Escherichia coli and Staphylococcus epidermidis

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    International audienceAims Antibacterial activities of phenylpropenes (PPs) (eugenol, isoeugenol, estragole and trans-anethole) and hydroxycinnamic acids (HCAs) (p-coumaric, caffeic and ferulic acids) were assessed against Escherichia coli and Staphylococcus epidermidis. Effect of cyclodextrin and liposome encapsulation on the PPs activity was also evaluated. Methods and Results All PPs inhibited the bacterial growth in the hundred micromolar range, while HCAs did not, as determined by broth macrodilution. Anethole and estragole showed a higher efficiency than eugenol and isoeugenol, and E. coli was more susceptible than S. epidermidis. Hydroxypropyl-Ξ²-cyclodextrin/PP complexes and anethole-loaded Lipoid S100-liposomes were prepared by freeze-drying and ethanol injection respectively. Both formulations were substantially less active than free PPs. For instance, E. coli growth inhibition was about 14% for all HP-Ξ²-CD/PP complexes evaluated at MIC50 values of free PPs (P < 0Β·05), and about 12% for liposomal anethole evaluated at minimal bactericidal concentration value of free anethole (P < 0Β·05). Conclusions Hydrophobicity appears to be crucial for PPs antibacterial activity. Encapsulation in cyclodextrin and liposome seems to retain the PPs preventing their interaction with bacteria. Significance and Impact of the Study This study highlights the structural features of simple phenylpropanoids related to their antibacterial activity. The limitations of conventional encapsulation systems on the activity of PPs should be considered in future applications

    The energy-efficient technology of power-intensive grinding process

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    Below - The results of laboratory studies of new energy efficient technologies grinding of raw materials. These technologies are the one of the most energy-intensive industries in the industry. These findings confirm the possibility of getting of groundbreaking of the technical and economic indicators in the implementation of the proposed innovative raw material grinding in ball mills. The last one is achieved by maintaining them in optimal trajectories of in-mill download depending on the constantly changing physical and mechanical properties (strength) of the crushed product. Inside the mill the most effective modes of grinding are quickly realized (impact, abrasion, crushing). Achieved a reduction in specific energy consumption depending on the strength of crushed material to 31,3 Γ· 43,5% while increasing productivity mills for raw materials of various classes fortress on 22,3 Γ· 57,3%. For Industrial test of offering technology was developed the variant of the automatic control of the fortress of the crushed material in the mill.ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½Ρ‹ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ Π»Π°Π±ΠΎΡ€Π°Ρ‚ΠΎΡ€Π½Ρ‹Ρ… исслСдований Π½ΠΎΠ²ΠΎΠΉ энСргоэфффСктивной Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π΅Π½ΠΈΡ ΡΡ‹Ρ€ΡŒΡ. Π­Ρ‚ΠΈ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠ²Π»ΡΡŽΡ‚ΡΡ ΠΎΠ΄Π½ΠΎΠΉ ΠΈΠ· Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ энСргоСмких производств Π² ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½ΠΎΡΡ‚ΠΈ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Π΄Π°Π½Π½Ρ‹Π΅ ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π°ΡŽΡ‚ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ получСния ΠΏΡ€ΠΎΡ€Ρ‹Π²Π½Ρ‹Ρ… Ρ‚Π΅Ρ…Π½ΠΈΠΊΠΎ-экономичСских ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ ΠΏΡ€ΠΈ Π²Π½Π΅Π΄Ρ€Π΅Π½ΠΈΠΈ ΠΏΡ€Π΅Π΄Π»Π°Π³Π°Π΅ΠΌΠΎΠΉ ΠΈΠ½Π½ΠΎΠ²Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π΅Π½ΠΈΡ ΡΡ‹Ρ€ΡŒΡ Π² ΡˆΠ°Ρ€ΠΎΠ²Ρ‹Ρ… ΠΌΠ΅Π»ΡŒΠ½ΠΈΡ†Π°Ρ…. ПослСднСС достигаСтся Π·Π° счСт поддСрТания Π² Π½ΠΈΡ… ΠΎΠΏΡ‚ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… Ρ‚Ρ€Π°Π΅ΠΊΡ‚ΠΎΡ€ΠΈΠΉ двиТСния Π²Π½ΡƒΡ‚Ρ€ΠΈΠΌΠ΅Π»ΡŒΠ½ΠΈΡ‡Π½ΠΎΠΉ Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ Π² зависимости ΠΎΡ‚ постоянно ΠΌΠ΅Π½ΡΡŽΡ‰ΠΈΡ…ΡΡ Ρ„ΠΈΠ·ΠΈΠΊΠΎ-мСханичСских свойств (крСпости) ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π°Π΅ΠΌΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚Π°. Π’ ΠΌΠ΅Π»ΡŒΠ½ΠΈΡ†Π΅ ΠΎΠΏΠ΅Ρ€Π°Ρ‚ΠΈΠ²Π½ΠΎ Ρ€Π΅Π°Π»ΠΈΠ·ΡƒΡŽΡ‚ΡΡ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ эффСктивныС Ρ€Π΅ΠΆΠΈΠΌΡ‹ ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π΅Π½ΠΈΡ (ΡƒΠ΄Π°Ρ€ΠΎΠΌ, истираниСм, Ρ€Π°Π·Π΄Π°Π²Π»ΠΈΠ²Π°Π½ΠΈΠ΅ΠΌ). Достигнуто сниТСниС ΡƒΠ΄Π΅Π»ΡŒΠ½Ρ‹Ρ… энСргозатрат Π² зависимости ΠΎΡ‚ крСпости ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π°Π΅ΠΌΠΎΠ³ΠΎ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π° Π½Π° 31,3Γ·43,5 % с ΠΎΠ΄Π½ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹ΠΌ ΠΏΠΎΠ²Ρ‹ΡˆΠ΅Π½ΠΈΠ΅ΠΌ ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ ΠΌΠ΅Π»ΡŒΠ½ΠΈΡ†Ρ‹ для ΡΡ‹Ρ€ΡŒΡ Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠ³ΠΎ класса крСпости Π½Π° 22,3Γ·57,3 %. Для ΠΏΡ€ΠΎΠΌΡ‹ΡˆΠ»Π΅Π½Π½Ρ‹Ρ… испытании ΠΏΡ€Π΅Π΄Π»ΠΎΠ³Π°Π΅ΠΌΠΎΠΉ Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½ Π²Π°Ρ€ΠΈΠ°Π½Ρ‚ систСмы автоматичСского контроля крСпости ΠΈΠ·ΠΌΠ΅Π»ΡŒΡ‡Π°Π΅ΠΌΠΎΠ³ΠΎ ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π° Π² ΠΌΠ΅Π»ΡŒΠ½ΠΈΡ†Π΅

    Intellectual control system of technological objects based on SIMATIC S7-1200 PLC

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    The proposed structure and the main components of experimental research platform of intellectual control systems of automatic process modern problems. Developed the basic components of a three-tier system of production management. Specified list of technical equipment providing the full spectrum of modern management system of enterprise automation. Developed example of the results of research and intellectual systems on the basis of freely-programmable logic controller Simatic 1200.ΠŸΡ€Π΅Π΄Π»Π°Π³Π°Π΅Ρ‚ΡΡ структура ΠΈ основныС ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Ρ‹ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠΉ ΠΏΠ»ΠΎΡ‰Π°Π΄ΠΊΠΈ Π½Π°ΡƒΡ‡Π½Ρ‹Ρ… исслСдований соврСмСнных ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌ ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½Ρ‹Ρ… систСм автоматичСского управлСния тСхнологичСскими процСссами. Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ основныС ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Ρ‹ Ρ‚Ρ€Π΅Ρ…ΡƒΡ€ΠΎΠ²Π½Π΅Π²ΠΎΠΉ систСмы управлСния производством. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½ ΠΏΠ΅Ρ€Π΅Ρ‡Π΅Π½ΡŒ тСхничСского оборудования, ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΠ²Π°ΡŽΡ‰Π΅Π³ΠΎ вСсь спСктр Π·Π°Π΄Π°Ρ‡ управлСния соврСмСнной систСмы Π°Π²Ρ‚ΠΎΠΌΠ°Ρ‚ΠΈΠ·Π°Ρ†ΠΈΠΈ прСдприятия. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½ ΠΏΡ€ΠΈΠΌΠ΅Ρ€ Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΈ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдований ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠΉ систСмы Π½Π° Π±Π°Π·Π΅ свободно-ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠΈΡ€ΡƒΠ΅ΠΌΠΎΠ³ΠΎ логичСского ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° Simatic 1200

    Intelligent systems technologies of rock mass blasting preparation

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    Training of highly qualified personnel at Higher Educational Institutions will be incomplete if students (bachelors, masters and doctors) don’t have the opportunity to test modules of technological and production processes, as they would not be able to determine the structure and parameters of these processes via control channels and estimate the equation of relationship of input and output coordinates graphically/visually, consequently, such personnel cannot operate (manage) production, much less create and design new more efficient technologies and control systems thereof. Modern supervisory control and data acquisition systems (SCADA) – allow developing virtual models of different complexity most closely resembling actual technological and production processes, controller management of such processes, visualization and opportunity of testing parameters changes of technological processes in real time mode for use in corresponding training researching in major technical specialties at HEI. This article considers the research of complex structured blocks in quarry conditions, development of software hardware complexes for determination of internal structure of debris and their rock processing characteristics, parameters of drilling and blasting operations, and visualization in real time mode of rock mass with different blasting parameters based on modern SCADA systems.ΠŸΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΠ° высококвалифицированных ΠΊΠ°Π΄Ρ€ΠΎΠ² Π² тСхничСских Π’Π£Π—Π°Ρ… Π±ΡƒΠ΄Π΅Ρ‚ Π½Π΅ΠΏΠΎΠ»Π½ΠΎΠΉ, Ссли ΠΎΠ±ΡƒΡ‡Π°ΡŽΡ‰ΠΈΠ΅ΡΡ (Π±Π°ΠΊΠ°Π»Π°Π²Ρ€Ρ‹, магистранты ΠΈ Π΄ΠΎΠΊΡ‚ΠΎΡ€Π°Π½Ρ‚Ρ‹) Π½Π΅ ΠΈΠΌΠ΅ΡŽΡ‚ возмоТности Ρ‚Π΅ΡΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΌΠΎΠ΄Π΅Π»ΠΈ тСхнологичСских ΠΈ производствСнных процСссов, Ρ‚Π°ΠΊ ΠΊΠ°ΠΊ ΠΎΠ½ΠΈ Π½Π΅ Π² состоянии ΠΎΠΏΡ€Π΅Π΄Π΅Π»ΠΈΡ‚ΡŒ структуру ΠΈ ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Ρ‹ Π΄Π°Π½Π½Ρ‹Ρ… процСссов ΠΏΠΎ ΠΊΠ°Π½Π°Π»Π°ΠΌ управлСния ΠΈ ΠΎΡ†Π΅Π½ΠΈΡ‚ΡŒ ΡƒΡ€Π°Π²Π½Π΅Π½ΠΈΠ΅ взаимосвязи Π²Ρ…ΠΎΠ΄Π½Ρ‹Ρ… ΠΈ Π²Ρ‹Ρ…ΠΎΠ΄Π½Ρ‹Ρ… ΠΊΠΎΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚ наглядно, Π² связи с этим, Ρ‚Π°ΠΊΠΎΠΉ спСциалист Π½Π΅ ΠΌΠΎΠΆΠ΅Ρ‚ Π³Ρ€Π°ΠΌΠΎΡ‚Π½ΠΎ ΡΠΊΡΠΏΠ»ΡƒΠ°Ρ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ (ΡƒΠΏΡ€Π°Π²Π»ΡΡ‚ΡŒ) Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠΌ производством, Π° Ρ‚Π΅ΠΌ Π±ΠΎΠ»Π΅Π΅ ΡΠΎΠ·Π΄Π°Π²Π°Ρ‚ΡŒ ΠΈ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π½ΠΎΠ²Ρ‹Π΅ Π±ΠΎΠ»Π΅Π΅ эффСктивныС Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ систСмы управлСния ΠΈΠΌΠΈ. Π‘ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹Π΅ SCADA - систСмы (Supervisory Control and Data Acquisition) – ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‚ Ρ€Π°Π·Ρ€Π°Π±Π°Ρ‚Ρ‹Π²Π°Ρ‚ΡŒ Π²ΠΈΡ€Ρ‚ΡƒΠ°Π»ΡŒΠ½Ρ‹Π΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠΉ слоТности, максимально ΠΏΡ€ΠΈΠ±Π»ΠΈΠΆΠ΅Π½Π½Ρ‹Π΅ ΠΊ Ρ€Π΅Π°Π»ΡŒΠ½Ρ‹ΠΌ тСхнологичСским ΠΈ производствСнным процСссам, ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π½ΠΎΠ΅ ΡƒΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ процСссами, Π²ΠΈΠ·ΡƒΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΡŽ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ Ρ‚Π΅ΡΡ‚ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ измСнСния ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² тСхнологичСского процСсса Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ для использования Π² ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΡ… ΡƒΡ‡Π΅Π±Π½Ρ‹Ρ… Ρ€Π°Π±ΠΎΡ‚Π°Ρ… ΠΏΠΎ ΠΏΡ€ΠΎΡ„ΠΈΠ»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΠΌ дисциплинам тСхничСских ΡΠΏΠ΅Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎΡΡ‚Π΅ΠΉ Π’Π£Π—ΠΎΠ². Π’ Π΄Π°Π½Π½ΠΎΠΉ ΡΡ‚Π°Ρ‚ΡŒΠ΅ рассматриваСтся исслСдованиС слоТноструктурных Π±Π»ΠΎΠΊΠΎΠ² Π² условиях ΠΊΠ°Ρ€ΡŒΠ΅Ρ€Π°, Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌΠ½ΠΎ-тСхничСских комплСксов для опрСдСлСния Π²Π½ΡƒΡ‚Ρ€Π΅Π½Π½Π΅ΠΉ структуры Ρ€Π°Π·Π²Π°Π»Π° ΠΏΠΎΡ€ΠΎΠ΄ ΠΈ ΠΈΡ… Π³ΠΎΡ€Π½ΠΎ-тСхнологичСских характСристик, ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² Π±ΡƒΡ€ΠΎΠ²Π·Ρ€Ρ‹Π²Π½Ρ‹Ρ… Ρ€Π°Π±ΠΎΡ‚, визуализация Π² Ρ€Π΅ΠΆΠΈΠΌΠ΅ Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ массива ΠΏΠΎΡ€ΠΎΠ΄ ΠΏΡ€ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€Π°Ρ… взрывания Π½Π° основС соврСмСнных SCADA - систСм
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