34 research outputs found
Fabrication and characterization of polyurethane foam prepared from liquefied oil palm mesocarp fibre with renewable monomer made from waste cooking oil
This study aims performance characteristics of polyurethane foams prepared by the reaction of biopolyol prepared from liquefied oil palm mesocarp fibre and renewable monomer with methylene diphenyl diisocyanate. The effect of prepared oil palm mesocarp biopolyol with incorporation of renewable monomer of PU foam on the thermal stability, mechanical properties and was analyzed by thermo gravimetric analysis, tensile and compressive tests and Fourier transform infrared spectroscopy. The improved thermal properties were achieved at a composition of oil palm mesocarp fibre foams (PMF). Oil PMF foams showed mechanical strength as compared to renewable monomer foams. PU foam prepared from oil palm mesocarp biopolyol with incorporation of renewable monomer improved the foams strength. An infrared spectroscopy study demonstrated the formation of urethane linkage
GREEN SYNTHESIS OF PLANT-MEDIATED METAL NANOPARTICLES: THE ROLE OF POLYPHENOLS
The use of metal nanoparticles (MNPs) in various fields is increasing day-by-day leading to a genuine concern about the issues related to their environmental and biological safety. The major approaches for the synthesis of NPs include physical and chemical methods which are expensive and hazardous to health in addition to being toxic to the environment. This review highlights the potential of plant extracts to carry out the synthesis of MNPs with a special emphasis on the role of flavonoids in nanosynthesis. This green and clean approach have been actively utilized in recent years as an alternative to conventional hazardous approaches. It has proved as cost-effective, non-toxic, less time and labor consuming, efficient, and eco-friendly method for the synthesis of MNPs with specific biological actions. This review also focuses on the role of polyphenols, including the flavonoids as bioreductants of metal salts for the synthesis of NPs along with their biomedical applications. Various examples of the MNPs, along with their biological actions, have also been summarized
Development of bambangan (Mangifera pajang) carbonated drink
Mangifera pajang Kostermans or bambangan is a popular fruit among Sabahan due
to its health and economic values. However, the fruit is not fully commercialized since it is
usually been used as traditional cuisine by local people. Thus, development of bambangan fruit
into carbonated drink was conducted to produce new product concept. The objectives of this
study were to conceptualize, formulate, evaluate consumer acceptance, and determine
physicochemical properties and nutritional composition of the accepted product. Method used
in conceptualising the product was based on questionnaire. The consumer acceptance was
evaluated based on descriptive and affective tests with four product formulations tested. The
physicochemical properties on carbon dioxide volume, colour, pH, total acidity, total soluble
solid (TSS) and viscosity were highlighted, meanwhile nutritional composition on fat, protein,
carbohydrates and energy content were determined. About 77% respondents gave positive
feedback, and 69% respondents decided this product is within their budget. The formulation of
5% bambangan pulp, 70% water, 25% sugar and 0.2% citric acid was highly accepted in
descriptive and affective tests with 4.4 and 6.39 mean scores, respectively. The
physicochemical properties and nutritional composition of the acceptance product were in
optimum value except for colour, total acidity and TSS. Overall, this study showed that the
product has high potential to be commercialized as new product concept, and heritage of
indigenous people can be preserved when this fruit is known regionally
ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΠ±ΠΎΡΠΎΡΠ½ΡΡ ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ
The electronic medical equipment developing process includes the problems and tasks of medical devicesβ technical characteristics improvement, using alternative physical methods of recording medical information. Medical electronic equipment includes defibrillation equipment of various classes, the modernization of which is inextricably connected with scientific and technical research in the field of physics, circuit engineering, design, technology, modeling, characteristicsβ measurement, as well as medicine. One of the interdisciplinary research areas at the cardiology and engineering issue is the development of new and modernisation of existing defibrillation devices, improving their functional and operational characteristics, as well as their application efficiency, which is necessary for the provision of extended resuscitation measures. This research is devoted to the research and modeling of defibrillator performance characteristics taking into account components reliability and the operational failure rate determination. The paper also contains study of the production process optimizing methods, in particular assembly operations of high-tech defibrillation products, where the search of optimization solutions was carried out using simulation modeling.Β Podoliak O. O., Ovchinnikova V. A., Selyahov S. N., Kormin T. G., Korejatov A. V. Optimization methods of assembly processes of defibrillation equipment. Ural Radio Engineering Journal. 2021;5(4):410β431. (In Russ.) DOI: 10.15826/urej.2021.5.4.005.Β ΠΡΠΎΡΠ΅ΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠ³ΠΎ Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π²ΠΊΠ»ΡΡΠ°Π΅Ρ Π² ΡΠ΅Π±Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΠΈ Π·Π°Π΄Π°ΡΠΈ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΡ
ΠΏΡΠΈΠ±ΠΎΡΠΎΠ², ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π°Π»ΡΡΠ΅ΡΠ½Π°ΡΠΈΠ²Π½ΡΡ
ΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΡΠ΅Π³ΠΈΡΡΡΠ°ΡΠΈΠΈ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΠΈ ΡΠ°ΠΊ Π΄Π°Π»Π΅Π΅. Π ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΌΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠ³ΠΎ Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΎΡΠ½ΠΎΡΠΈΡΡΡ Π΄Π΅ΡΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½Π°Ρ ΡΠ΅Ρ
Π½ΠΈΠΊΠ° ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΊΠ»Π°ΡΡΠ°, ΠΌΠΎΠ΄Π΅ΡΠ½ΠΈΠ·Π°ΡΠΈΡ ΠΊΠΎΡΠΎΡΠΎΠΉ Π½Π΅ΡΠ°Π·ΡΡΠ²Π½ΠΎ ΡΠ²ΡΠ·Π°Π½Π° Ρ Π½Π°ΡΡΠ½ΡΠΌΠΈ ΠΈ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΈΠ·ΠΈΠΊΠΈ, ΡΡ
Π΅ΠΌΠΎΡΠ΅Ρ
Π½ΠΈΠΊΠΈ, ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ, ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ, ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ, ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½Ρ. ΠΠ΄Π½ΠΎ ΠΈΠ· Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΌΠ΅ΠΆΠ΄ΠΈΡΡΠΈΠΏΠ»ΠΈΠ½Π°ΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π½Π° ΡΡΡΠΊΠ΅ ΠΊΠ°ΡΠ΄ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ ΠΈΠ½ΠΆΠ΅Π½Π΅ΡΠΈΠΈ ΡΠΎΡΡΠΎΠΈΡ Π² ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ Π½ΠΎΠ²ΡΡ
ΠΈ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ ΡΡΡΠ΅ΡΡΠ²ΡΡΡΠΈΡ
Π΄Π΅ΡΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΈΠ±ΠΎΡΠΎΠ², ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΠΈ ΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΈ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΡ
ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ, ΡΡΠΎ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ Π΄Π»Ρ ΠΎΠΊΠ°Π·Π°Π½ΠΈΡ ΡΠ°ΡΡΠΈΡΠ΅Π½Π½ΡΡ
ΡΠ΅Π°Π½ΠΈΠΌΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ΅ΡΠΎΠΏΡΠΈΡΡΠΈΠΉ. ΠΠ°ΡΡΠΎΡΡΠ°Ρ ΡΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΎΡΠ° Ρ ΡΡΠ΅ΡΠΎΠΌ Π½Π°Π΄Π΅ΠΆΠ½ΠΎΡΡΠΈ ΡΠΎΡΡΠ°Π²Π½ΡΡ
ΡΠ°ΡΡΠ΅ΠΉ ΠΈΠ·Π΄Π΅Π»ΠΈΡ ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠΊΠ°Π·ΠΎΠ². Π’Π°ΠΊΠΆΠ΅ Π² ΡΡΠ°ΡΡΠ΅ ΠΏΡΠΈΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ°, Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ ΡΠ±ΠΎΡΠΎΡΠ½ΡΡ
ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΉ Π²ΡΡΠΎΠΊΠΎΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ½ΠΎΠΉ Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ, Π³Π΄Π΅ ΠΏΠΎΠΈΡΠΊ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΡΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΈΠΌΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ.Β ΠΠΎΠ΄ΠΎΠ»ΡΠΊ Π. Π., ΠΠ²ΡΠΈΠ½Π½ΠΈΠΊΠΎΠ²Π° Π. Π., Π‘Π΅Π»ΡΡ
ΠΎΠ² Π‘. Π., ΠΠΎΡΠΌΠΈΠ½ Π’. Π., ΠΠΎΡΠ΅ΠΆΠ°ΡΠΎΠ² Π. Π. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΡΠ±ΠΎΡΠΎΡΠ½ΡΡ
ΠΏΡΠΎΡΠ΅ΡΡΠΎΠ² Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ. Ural Radio Engineering Journal. 2021;5(4):410β431. DOI: 10.15826/urej.2021.5.4.005.Β
Processing of Watermelon Rind Dehydrated Candy
Watermelon rind (Citrullus lanatus) dehydrated candy was prepared by using osmotic dehydration process that involves slow impregnation of syrup before drying at 50Β°C for 8, 14 and 20 hours. From the study, it can be seen that drying time significantly affected the moisture content of the watermelon rind dehydrated candy. The moisture content was significantly decreased with drying time. For colour evaluation, the L* value of watermelon rind dehydrated candy was slightly decreased with drying time while the a* value was slightly increased. Watermelon rind dehydrated candy that dried for 14 hours was the most preferred sample by the panelists as it received the highest score for texture, taste and overall acceptability attributes. So, it can be concluded that 14 hours of drying time is the most appropriate time to dry the candied watermelon rind
Antiproliferative activity of five garcinia species collected in Sabah, Malaysian Borneo against estrogen receptor-human breast carcinoma (MCF-7) cell line
Garcinia species are well-known for their unique properties of having natural
secondary metabolite compounds called xanthone as well as their ethnomedicinal values such as
antioxidant, anticancer, anti-inflammatory and antibacterial properties. The study was conducted
to investigate the antiproliferative activity of peel, flesh and seed extracts of G. dulcis, G.
parvifolia, G. nitida, G. mangostana var. mangosta and G. cambogia collected from Malaysian
Borneo (Sabah) against estrogen receptor-positive human breast carcinoma (MCF-7) cells. The
antiproliferative activity was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-
diphenyltetrazolium bromide (MTT) assay. The results showed that G. dulcis seed induced
strongest antiproliferative activity against MCF-7 cancer cell line with the IC50 value of 2.5Β±0.0
ΞΌg/ml, followed by G. dulcis flesh, G. mangostana var. mangostana peel and G. dulcis peel with
IC50 values of 9.33 Β± 3.21, 11.17 Β± 1.04 and 17.67 Β± 2.08 ΞΌg/ml, respectively. Meanwhile, the
IC50 value for G. cambogia peel was 56.67 Β± 10.5 ΞΌg/ml. No IC50 value was detected in all parts
of G. parvifolia and G. nitida at concentration tested (<100 ΞΌg/ml). Overall, this study clearly
showed that the whole fruit of G. dulcis displayed potent cytotoxic effect by inducing
antiproliferative activity at low concentration. Further studies are needed in the future to develop
this fruit as pharmaceutical and nutraceutical product for the treatment and prevention against
cancer
Next Generation Driver for Attosecond and Laser-plasma Physics
The observation and manipulation of electron dynamics in matter call for attosecond light pulses, routinely available from high-order harmonic generation driven by few-femtosecond lasers. However, the energy limitation of these lasers supports only weak sources and correspondingly linear attosecond studies. Here we report on an optical parametric synthesizer designed for nonlinear attosecond optics and relativistic laser-plasma physics. This synthesizer uniquely combines ultra-relativistic focused intensities of about 10(20)W/cm(2) with a pulse duration of sub-two carrier-wave cycles. The coherent combination of two sequentially amplified and complementary spectral ranges yields sub-5-fs pulses with multi-TW peak power. The application of this source allows the generation of a broad spectral continuum at 100-eV photon energy in gases as well as high-order harmonics in relativistic plasmas. Unprecedented spatio-temporal confinement of light now permits the investigation of electric-field-driven electron phenomena in the relativistic regime and ultimately the rise of next-generation intense isolated attosecond sources
Optimization Methods of Assembly Processes of Defibrillation Equipment
ΠΠ»Π°Π³ΠΎΠ΄Π°ΡΠΈΠΌ Π·Π° ΡΠΎΠ΄Π΅ΠΉΡΡΠ²ΠΈΠ΅ ΠΠ Β«ΠΠ Β«Π£ΠΠΠΒ», Π² Π³Π»Π°Π²Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΎΡΠ° ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΎΡΡΠΊΠΎΠ³ΠΎ Π±ΡΡΠΎ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ ΡΠ΅Ρ
Π½ΠΈΠΊΠΈ Π§ΡΠΏΠΎΠ²Π° ΠΠ»Π΅ΠΊΡΠ΅Ρ ΠΠ»Π΅ΠΊΡΠ°Π½Π΄ΡΠΎΠ²ΠΈΡΠ°.ΠΠΎΡΡΡΠΏΠΈΠ»Π°: 11.01.2022. ΠΡΠΈΠ½ΡΡΠ° Π² ΠΏΠ΅ΡΠ°ΡΡ: 24.01.2022.We are grateful for the assistance of JSC βPA βUOMPββ represented by Alexey A. Chupov Chief Designer of the Design Bureau of Medical Equipment.Received: 11.01.2022. Accepted: 24.01.2022.ΠΡΠΎΡΠ΅ΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠ³ΠΎ Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΈΡ Π²ΠΊΠ»ΡΡΠ°Π΅Ρ Π² ΡΠ΅Π±Ρ ΠΏΡΠΎΠ±Π»Π΅ΠΌΡ ΠΈ Π·Π°Π΄Π°ΡΠΈ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΡ
ΠΏΡΠΈΠ±ΠΎΡΠΎΠ², ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΡ Π°Π»ΡΡΠ΅ΡΠ½Π°ΡΠΈΠ²Π½ΡΡ
ΡΠΈΠ·ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΡΠ΅Π³ΠΈΡΡΡΠ°ΡΠΈΠΈ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ ΠΈΠ½ΡΠΎΡΠΌΠ°ΡΠΈΠΈ ΠΈ ΡΠ°ΠΊ Π΄Π°Π»Π΅Π΅. Π ΡΠ°Π΄ΠΈΠΎΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΌΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠ³ΠΎ Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΎΡΠ½ΠΎΡΠΈΡΡΡ Π΄Π΅ΡΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½Π°Ρ ΡΠ΅Ρ
Π½ΠΈΠΊΠ° ΡΠ°Π·Π»ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΊΠ»Π°ΡΡΠ°, ΠΌΠΎΠ΄Π΅ΡΠ½ΠΈΠ·Π°ΡΠΈΡ ΠΊΠΎΡΠΎΡΠΎΠΉ Π½Π΅ΡΠ°Π·ΡΡΠ²Π½ΠΎ ΡΠ²ΡΠ·Π°Π½Π° Ρ Π½Π°ΡΡΠ½ΡΠΌΠΈ ΠΈ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ Π² ΠΎΠ±Π»Π°ΡΡΠΈ ΡΠΈΠ·ΠΈΠΊΠΈ, ΡΡ
Π΅ΠΌΠΎΡΠ΅Ρ
Π½ΠΈΠΊΠΈ, ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ, ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ, ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ, ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½ΠΈΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½Ρ. ΠΠ΄Π½ΠΎ ΠΈΠ· Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠΉ ΠΌΠ΅ΠΆΠ΄ΠΈΡΡΠΈΠΏΠ»ΠΈΠ½Π°ΡΠ½ΡΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ Π½Π° ΡΡΡΠΊΠ΅ ΠΊΠ°ΡΠ΄ΠΈΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΈ ΠΈΠ½ΠΆΠ΅Π½Π΅ΡΠΈΠΈ ΡΠΎΡΡΠΎΠΈΡ Π² ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ Π½ΠΎΠ²ΡΡ
ΠΈ ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ ΡΡΡΠ΅ΡΡΠ²ΡΡΡΠΈΡ
Π΄Π΅ΡΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΈΠ±ΠΎΡΠΎΠ², ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΠΈ ΠΈΡ
ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΡΡ
ΠΈ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΈΡ
ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ, ΡΡΠΎ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ Π΄Π»Ρ ΠΎΠΊΠ°Π·Π°Π½ΠΈΡ ΡΠ°ΡΡΠΈΡΠ΅Π½Π½ΡΡ
ΡΠ΅Π°Π½ΠΈΠΌΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΌΠ΅ΡΠΎΠΏΡΠΈΡΡΠΈΠΉ. ΠΠ°ΡΡΠΎΡΡΠ°Ρ ΡΡΠ°ΡΡΡ ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΎΡΠ° Ρ ΡΡΠ΅ΡΠΎΠΌ Π½Π°Π΄Π΅ΠΆΠ½ΠΎΡΡΠΈ ΡΠΎΡΡΠ°Π²Π½ΡΡ
ΡΠ°ΡΡΠ΅ΠΉ ΠΈΠ·Π΄Π΅Π»ΠΈΡ ΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΎΡΠΊΠ°Π·ΠΎΠ². Π’Π°ΠΊΠΆΠ΅ Π² ΡΡΠ°ΡΡΠ΅ ΠΏΡΠΈΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΠ΅ΡΡΠ°, Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ ΡΠ±ΠΎΡΠΎΡΠ½ΡΡ
ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΉ Π²ΡΡΠΎΠΊΠΎΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ½ΠΎΠΉ Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ, Π³Π΄Π΅ ΠΏΠΎΠΈΡΠΊ ΠΎΠΏΡΠΈΠΌΠΈΠ·Π°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΡΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΈΠΌΠΈΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ.The electronic medical equipment developing process includes the problems and tasks of medical devicesβ technical characteristics improvement, using alternative physical methods of recording medical information. Medical electronic equipment includes defibrillation equipment of various classes, the modernization of which is inextricably connected with scientific and technical research in the field of physics, circuit engineering, design, technology, modeling, characteristicsβ measurement, as well as medicine. One of the interdisciplinary research areas at the cardiology and engineering issue is the development of new and modernisation of existing defibrillation devices, improving their functional and operational characteristics, as well as their application efficiency, which is necessary for the provision of extended resuscitation measures. This research is devoted to the research and modeling of defibrillator performance characteristics taking into account components reliability and the operational failure rate determination. The paper also contains study of the production process optimizing methods, in particular assembly operations of high-tech defibrillation products, where the search of optimization solutions was carried out using simulation modeling.ΠΠ°Π½Π½Π°Ρ ΡΡΠ°ΡΡΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°ΡΡΡΡ ΡΠ°Π±ΠΎΡΡ, ΠΏΠΎΡΠ²ΡΡΠ΅Π½Π½ΠΎΠΉ ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠ° Β«Π‘ΠΎΠ·Π΄Π°Π½ΠΈΠ΅ Π²ΡΡΠΎΠΊΠΎΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΈΡ
ΠΈΠ·Π΄Π΅Π»ΠΈΠΉ Π΄Π»Ρ Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΡ ΡΡΠ½ΠΊΡΠΈΠΈ ΡΠ΅ΡΠ΄ΡΠ° Π² ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΠ΅ ΠΎΠ±ΡΠ΅Π΄ΠΎΡΡΡΠΏΠ½ΠΎΠΉ Π΄Π΅ΡΠΈΠ±ΡΠΈΠ»Π»ΡΡΠΈΠΈΒ».The article is a part of the work devoted to the implementation of the project βCreation of high-tech production of medical devices for the restoration of heart function to ensure public defibrillationβ
Study on the biodegradability and water adsorption of ldpe/sago starch blend
The aim of this study is to develop starch incorperated with low density polyethylene (LDPE) composites with enhanced degradable properties. The degradable test has been carried out by hydrolysis. The water uptake of the composites has been determined. The degradability of the compatible thermoplastic LDPE/starch was investigated by weight loss percent (WLP). Simple and alkaline hydrolysis of the composites apparently involves surface starch granules; embedded granules are not easily accessible because of the poor moisture absorption of the matrix. Exposure of the composites to hydrolysis resulted in massive deterioration typified by turbidity, discoloration, embrittleness and dimensional changes. Moisture uptake increased with increased starch content and immersion time. The time taken for the composites to equilibrate was about three months even when they were immersed completely in water. The mechanical properties of the composite also dropped with increasing moisture uptake. SEM imaging was also carried out on the samples before and after degradation. High content of starch also was found to increase the rate of biodegradability of LDPE/sago starch mould