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1

Synergistic Effect of Silk Fibroin/Chlorogenic Acid/Citric Acid on Anti-ultraviolet and Antibacterial Properties of Cotton Fabric

Xiao Minghui, Zhang Wei

Fibres & Textiles in Eastern Europe

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2024

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Vol. 32, no. 1

76--82

EN

In order to obtain a durable anti-ultraviolet and antibacterial cotton fabric, silk fibroin, honeysuckle extract (chlorogenic acid) and citric acid were used to prepare a compound environment-friendly finishing agent, and then the cotton fabric was modified in this paper. Micro-morphology and properties were compared between cotton fabrics finished with a composite solution of silk fibroin/chlorogenic acid/citric acid and those finished first with silk fibroin then chlorogenic acid. Results showed that amidation and esterification crosslinking reactions occurred between the compounds and cotton fibers. Cotton fabric treated with the composite solution had higher UPF value (>90 after 30 launderings) and antibacterial rates (>95% for Staphylococcus aureus and Escherichia coli). There existed strong covalent bonds and good synergistic effects among silk fibroin, citric acid and chlorogenic acid, which could endow the cotton fabric with more durable anti-ultraviolet and antibacterial properties.

2

Synergistyczne działanie flukonazolu i laktonów ftalidowych jako czynnik ograniczający stosowanie leków azolowych w leczeniu kandidoz

Olejniczak Teresa

Wiadomości Chemiczne

|

2023

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[Z] 77, 5-6

555-567

EN

The resistance of Candida albicans and other pathogenic yeasts to azole antifungal drugs has increased rapidly in recent years and is a significant problem in clinical therapy. The current state of pharmacological knowledge precludes the withdrawal of azole drugs, as no other active substances have yet been developed that could effectively replace them. Therefore, one of the anti-yeast strategies may be therapies that can rely on the synergistic action of natural compounds and azoles, limiting the use of azole drugs against candidiasis. Synergy assays perperformed in vitro were used to assess drug interactions Fractional Inhibitory Concentration Index. The synergistic effect of fluconazole (1) and three synthetic lactones identical to those naturally occurring in celery plants—3-n-butylphthalide (2), 3-n-butylidenephthalide (3), 3-n-butyl-4,5,6,7-tetrahydrophthalide (4)—against Candida albicans ATCC 10231, C. albicans ATCC 2091, and C. guilliermondii KKP 3390 was compared with the performance of the individual compounds separately. MIC90 (the amount of fungistatic substance (in µg/mL) inhibiting yeast growth by 90%) was determined as 5.96–6.25 µg/mL for fluconazole (1) and 92–150 µg/mL for lactones 2–4. With the simultaneous administration of fluconazole (1) and one of the lactones 2–4, it was found that they act synergistically, and to achieve the same effect it is sufficient to use 0.58–6.73 µg/mL fluconazole (1) and 1.26–20.18 µg/mL of lactones 2–4. Based on biological research, the influence of the structure on the fungistatic activity and the synergistic effect were determined.

3

Study on separation of fine-particle ilmenite and mechanism using flocculation flotation with sodium oleate and polyacrylamide

Peng Yang, Xiao Junhui, Deng Bing, Wang Zhen, Liu Nengyun, Yang Daoguang, Ding Wei, Chen Tao, Wu Qiang

Physicochemical Problems of Mineral Processing

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2020

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Vol. 56, iss. 1

161--172

EN

In this paper, sodium oleate, polyacrylamide, soluble starch and sodium carboxymethyl cellulose were used as flocculants to study the flocculation and sedimentation behavior of microfine ilmenite. Sedimentation test shows that sodium oleate and polyacrylamide have good flocculation effect on ultrafine ilmenite. The flocculation rate of ilmenite can be further improved by the combination of sodium oleate and polyacrylamide. It was found that both flocculants could generate chemical adsorption with ilmenite surface, and they all react with Fe3+ on ilmenite surface. However, sodium oleate reacts with Fe3+ to form a water-insoluble iron oleate precipitate which coats the surface of the ilmenite and hinders the action of polyacrylamide and the remaining Fe3+. This problem can be avoided by adding polyacrylamide followed by sodium oleate, and the flotation recovery can be increased significantly.

4

Investigations of Flame Retardant Properties of Zinc Borate Accompanying with Huntite and Hydromagnesite in Polymer Composites

Atay Hüsnügül Yilmaz, Icin Öykü, Kuru Buket

Inżynieria Mineralna

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2020

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no. 1, vol. 1

79--86

EN

Fires have been a danger to human beings for the centuries. As people lost their lives and property in fires, they tried to fight the fire and their efforts in this area continued increasingly. Unfortunately, it is still not possible to completely reset the risk of starting the fire. But it seems likely to extinguish immediately after the fire has started, and this is very important to save people’s lives. Scientists have been working in this field in recent years; they are concentrated on producing fire-resistant materials using different materials. This can be provided by different ways; either fire-resistant material can be produced new, or the fire resistivity can be provided by incorporating the additive material into a flammable material. In our previous studies, we used huntite and hydromagnesite minerals to give fire resistance property to polymer materials, very successful results were obtained. In this study, huntite and hydromagnesite minerals were used for accompanying with zinc borate in polypropylene composites in order to increase the flame retardant property of a polymeric materials. Different content of minerals were blended with polypropylene, and composites were produced by twin-screw extruder for observing synergistic effect. Scanning electron microscopy (SEM) analyses were conducted to determine the structural and morphological properties of the composites. Thermal properties were determined according to thermogravimetric analysis (TGA). Tensile and three point bending tests were carried out to obtain mechanical properties. Flame retardant performance was evaluated according to UL 94 vertically flammability test. It was concluded that very good synergistic effects were obtained that zinc borate was significantly influential with huntite/hydromagnesite in the flammability characteristics of composites because higher char formation is observed with zinc borate addtion. Moreover, the zinc borate reduced the smoke generated during combustion.

PL

Pożary od wieków stanowią zagrożenie dla ludzi. Gdy ludzie stracili życie i mienie w wyniku pożarów, próbowali zwalczyć pożar, a ich wysiłki w tej dziedzinie były coraz bardziej skuteczne Niestety, nadal nie jest możliwe całkowite wyeliminowanie ryzyka rozpoczęcia pożaru. Ważne jest ugaszenie pożaru natychmiast po wybuchu aby uratować ludzkie życie. Naukowcy pracują w tej dziedzinie w ostatnich latach; koncentrują się na wytwarzaniu materiałów ognioodpornych przy użyciu różnych surowców. Można to zapewnić na różne sposoby; albo materiał ognioodporny może być wytworzony jako nowy, albo ognioodporność może być zapewniona przez włączenie materiału dodatkowego do materiału łatwopalnego. W badaniach używano minerałów huntite i hydromagnesitu, aby nadać materiałom polimerowym właściwości ognioodpornych, osiągając bardzo udane wyniki. W artykule przedstawiono wyniki wykorzystania minerałów huntitu i hydromagnezytu w obecności boranu cynku w kompozytach polipropylenowych w celu zwiększenia właściwości ognioodpornych materiałów polimerowych. Różne ilości minerałów zmieszano z polipropylenem, a kompozyty wytworzono za pomocą wytłaczarki dwuślimakowej w celu zaobserwowania efektu synergicznego. Przeprowadzono analizy skaningowej mikroskopii elektronowej (SEM) w celu określenia właściwości strukturalnych i morfologicznych kompozytów. Właściwości termiczne określono za pomoca analizą termograwimetryczną (TGA). Przeprowadzono próby rozciągania i zginania trzypunktowego w celu określenia właściwości mechanicznych. Działanie zmniejszające palność oceniono zgodnie z testem palności w pionie UL 94. Stwierdzono, że uzyskano bardzo dobre efekty synergiczne, boran cynku miał znaczący wpływ na huntit i hydromagnezyt i zmianę charakterystyki palności kompozytów, ponieważ obserwuje się podwyśzone powstawanie węgla drzewnego przy dodawaniu boranu cynku. Ponadto boran cynku zmniejszył ilość dymu powstający podczas spalania

5

Intensification of drying processes due to ultrasound enhancement

Kowalski S. J.

Chemical and Process Engineering

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2018

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Vol. 39, nr 3

251-–262

EN

The aim of this article is to present a modern method of convective drying intensification caused by the external action of ultrasound. The purpose of this study is to discover the mechanism of ultrasonic interaction between the solid skeleton and the moisture in pores. This knowledge may help to explain the enhancement of drying mechanism affected by ultrasound, particularly with respect to biological products like fruits and vegetables. The experimental kinetics tests were conducted in a hybrid dryer equipped with a new ultrasonic generator. The drying kinetics curves determined on the basis of drying model developed by the author were validated with those by the ones obtained from experimental tests. The intensification of heat and mass transfer processes due to ultrasound induced heating effect and vibration effect are analysed. The obtained results allow to state that ultrasound makes drying processes more effective and enhance the drying efficiency of biological products without significant elevation of their temperature.

6

Synergism of octane phenol polyoxyethylene-10 and oleic acid in apatite flotation

Cheng R., Li C., Liu X., Deng S.

Physicochemical Problems of Mineral Processing

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2017

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Vol. 53, iss. 2

1214--1227

EN

The addition of octane phenol polyoxyethylene-10 (OP-10) to oleic acid via a reagent-combination technology was carried out and it was shown that OP-10 exhibited synergistic effects in the flotation performance of oleic acid. Single-mineral flotation tests, zeta-potential measurements, total-organic-carbon determination, and scale-up of continuous tests using raw ore were also carried out. Single-mineral flotation tests showed that OP-10 exhibited virtually no collecting performance for apatite, but it improved the flotation performance of oleic acid following its addition to oleic acid in small amounts at low temperature. Zeta-potential measurements and total-organic-carbon determination results indicated that the addition of 2.5% OP-10 to oleic acid increased the absolute value of the apatite surface potential and improved adsorption of oleic acid on the apatite surface at low temperature. A scale-up of the continuous test showed that application of OP-10 with industrial fatty acids led to good synergistic effects and contributed to effective separation of phosphate ore.

7

Influence of synergistic effect between dodecylamine and sodium oleate on improving the hydrophobicity of fluorapatite

Cao Q., Luo B., Wen S., Cheng J.

Physicochemical Problems of Mineral Processing

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2017

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Vol. 53, iss. 1

42--55

EN

The influence of synergistic effect between dodecylamine (DDA) and sodium oleate (NaOl) on the hydrophobicity of fluorapatite (FA) was investigated with contact angle, surface tension, XPS and zeta potential studies. The role of pH and the mixing ratio of surfactants on the synergistic behavior were considered. Basing on the contact angle results the suitable pH for the NaOl-DDA mixture was pH 9.5. A further study indicated that the 3:7 DDA-NaOl mixtures could notably improve the contact angle comparing to that only with DDA or NaOl. In the solution of this mixture, the DDA cation and DDA molecule both adsorb at the FA surface as revealed by the XPS spectra results. The zeta potential analysis further suggested that the adsorption of oleate at the FA surface was also improved. The presence of DDA cation and DDA molecule was expected to result in a uniform packing of surfactants at the FA surface.

8

Multiple Frequency Ultrasounds Assisted Oil Sands Separation Technology

Liao K., Ge J., Zhang G., Fu L.

Archives of Acoustics

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2017

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Vol. 42, No. 4

767--773

EN

Ultrasound has a wide range of applications in oil sands separation industry due to its green and nopolluting characteristics. The combined ultrasounds technology has been widely used in many industries by virtue of the synergistic effect of cavitation effect; meanwhile, dual-frequency ultrasounds have been reported being used in lotion oil sands technology. Based on this idea, this study focuses on the application of multiple frequency ultrasounds in oil sands separation, and a comparative study has been conducted between the combined ultrasounds systems with the difference in the number of the ultrasound. The results show that the oil production rate of the samples treated by the lotion of sodium dodecyl benzene sulfonate (SDBS) and assisted by multiple frequency ultrasounds (96%) is significantly higher than that of the single frequency ultrasound (76%); the bigger the number of the ultrasound participating in the combination is, the higher the oil production rate of the oil sands is; the lower the frequency of the ultrasounds employed in the combined system is, the higher the oil production rate is. The optimum treating conditions for tri-frequency ultrasounds assisted technology are as follow: the treating time is 10-15 min, the treating temperature is 20-30°C, the concentration of surfactant in the lotion is 1.5 g/l, and the mass ratio of the lotion to oil sands is 1.8. In short, the use of multiple frequency ultrasounds can improve the oil production rate of oil sands, reduce the energy consumption during the separation process, and reduce the environmental contamination; therefore, multiple frequency ultrasounds assisted oil sands separation technology is a promising technology for oil sands resources exploitation with high efficiency.

9

Skuteczność produktu

Storoniak-Palczak G., Szwajca D.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2013

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z. 66

45--54

PL

Z przeglądu literatury wynika, że skuteczność produktu staje się zaledwie tłem dla rozważań nad efektywnością produktu. Obie kategorie nie są jednak zupełnie neutralne względem siebie. Skuteczność produktu jako stopień realizacji założonego celu nawiązuje do efektów, a efektywność produktu jest relacją uzyskanych efektów do nakładów. Percepcja efektywności produktu od strony efektów pozwala wnioskować, że podstawowym jej wyznacznikiem jest skuteczność produktu. W niniejszym ujęciu skuteczność ta została przedstawiona w konwencji charakteryzujących ją zależności funkcyjnych oraz sposobu rozwiązywania według złożoności i specyfiki instrumentalnej struktury produktu.

EN

A review of the literature suggests that the efficacy of the product is just a backdrop for the debate on the effectiveness of the product. Both groups, however, are not completely neutral relative to each other. The efficacy of the degree of attainment of the objective to establish the effects and effectiveness of the product is the relation obtained effects to resources. The perception of the effectiveness of the product from the effects to the conclusion that the primary determinant of the effectiveness of the product. The effectiveness of this approach has been presented to the convention characterize the functional dependencies, and how to troubleshoot by instrumental complexity and uniqueness of the product structure.

10

The synergistic effect on Cr(III) ions transport through SLM with carrier mixtures

Łobodzin P., Rajewski J.

Problemy Eksploatacji

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2013

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nr 3

37--44

EN

Transport of Cr(III) ions through a mix carrier supported liquid membrane (SLM) was studied. A mixture of D2EHPA and Cyanex272 was used as a carrier. It was observed that the effectiveness of the process depends on the concentration ratio of carriers in the liquid phase. There is a threshold concentration of the carriers in the membrane phase, above which the efficiency was decreased. The threshold concentration of carriers mixtures for Cr(III) ions transport was obtained when 30% of D2EHPA was added to the 5% of Cyanex272. This composition allows one to shorten the time from 5 to 1.5 hours and to remove ~98% of Cr(III). The value of flux increased 3-fold and the effectiveness also increased.

PL

Przeprowadzono badania transportu jonów Cr(III) przez dwuprzenośnikową immobilizowaną membranę ciekłą. Do transportu jonów Cr(III) zastosowano mieszaninę przenośników Cyanex272 i D2EHPA. Stwierdzono, że efektywność procesu zależy od stosunku stężeń przenośników w fazie membranowej. Zaobserwowano wzrost efektywności przenoszenia jonów Cr(III), jednak do pewnego progowego stężenia drugiego przenośnika w membranie, po przekroczeniu którego wydajność spadała. W układzie z Cyanex272 i D2EHPA dla transportu Cr(III) przez SLM ich progowe stężenia to odpowiednio 5% i 30%. Membrana o takim składzie umożliwia trzykrotne zwiększenie strumienia, a tym samym zwiększa się efektywność procesu. Czas trwania procesu został skrócony z 5 h (dla samego D2EHPA) do 1,5 h, co umożliwiło usunięcie ~98% chromu z roztworu.

11

Wpływ gumy gellan na właściwości reologiczne roztworów skrobi o różnym pochodzeniu botanicznym

Orczykowska M., Budzyński P., Dziubiński M.

Inżynieria i Aparatura Chemiczna

|

2011

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Nr 1

31-32

PL

Przedstawiono wyniki badań dotyczących wzajemnych interakcji wodnych roztworów skrobi o różnym pochodzeniu botanicznym z hydrokoloidem po-lisacharydowym, jakim jest jeden z dodatków do żywności - guma gellano-wa. W prezentowanej pracy przeanalizowano uzyskane w trakcie pomiarów reometrycznych właściwości reologiczne badanych roztworów, przedyskutowano efekt synergistyczny, a także oszacowano wartość stałej czasowej X odpowiadającej za podatność struktury na zniszczenie ścinaniem.

EN

Investigation results dealing with the structure of aqueous solution of starch from different botanical sources with presence or without gellan gum are presented in the paper. This gum is generally applied as food additive. The authors present an analysis of rheological properties of starch - hydrocol-loid blends determined during rheometric measurements. The synergistic effect and a value of time constant responsible for the structure of blends are described.

12

Oxidation of CO and Propane on Pt-Au/Al2O3 Catalysts

Ruszel M., Grzybowska-Świerkosz B., Karpiński Z., Juszczyk W.

Polish Journal of Chemistry

|

2008

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Vol. 82, nr 10

1991-1997

EN

Alumina-supported bimetallic Pt-Au catalysts appeared to be superior to that containing Pt alone in oxidation of CO and propane. Such a catalytic behaviour in combination with previous physical characterization data suggests that Pt and Au remain intimately mixed in the form of Pt-Au bimetallic particles and that the presence of Au in these particles modifies the behaviour of Pt. Reasons for the occurrence of this synergistic effect are discussed.

13

Zastosowanie metod pogłębionego utleniania do rozkładu wodnych roztworów fluorenu

Olejnik D., Miller J. S., Ledakowicz S.

Inżynieria Chemiczna i Procesowa

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2001

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T. 22, z. 3D

1037--1042

PL

Zbadano rozkład wodnych roztworów fluorenu stosując procesy ozonowania, fotolizy oraz niekatalityczne metody pogłębionego utleniania. Wyznaczono optymalny stosunek H2O2 do O3 oraz dawkę H2O2 maksymalnie przyspieszającą proces rozkładu w układzie UV/H2O2. Stwierdzono występowanie efektu synergistycznego w przypadku reakcji łączących działanie O3/UV, 03/H2O2 i UV/H2O2.

EN

The destruction of fluorene in aqueous solution using ozonation, photolysis and noncatalytic advanced oxidation processes was studied. The optimal ratio H2O2: O3 and beneficial doses of H2O2 maximally accelerated the degradation in O3/UV system were found. The synergistic effect for reactions in O3/UV, O3/H2O2 and UV/H2O2 systems was noticed.