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Journal articles on the topic 'Vector natural purification capacity'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Zhang, Li Na, and Bo Yang. "Research on Evaluation of the City Environmental Pollution Based on Support Vector Machine." Applied Mechanics and Materials 651-653 (September 2014): 1460–63. http://dx.doi.org/10.4028/www.scientific.net/amm.651-653.1460.

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With the industrialization of society progress, human discharged a variety of pollutants into the nature, these pollutants have been excess of the self-purification capacity of the natural environment. City air quality, water quality, noise pollution and people's daily life are closely linked. Various types of pollution make the city haze frequency, declining water quality, noise enhanced, so that people living in city pay an attention to environment quality. Based on the statistical data of 2013 Chinese statistical yearbook, Corresponding relationship is established the index system of enviro

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Miller, Jeffrey S., Martin Felice, Ron McElmurry, et al. "Trispecific Killer Engagers (TriKEs) that contain IL-15 to make NK cells antigen specific and to sustain their persistence and expansion." Blood 126, no. 23 (2015): 232. http://dx.doi.org/10.1182/blood.v126.23.232.232.

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Abstract Natural killer (NK) cells are capable of immune surveillance mediated by a balance of activating and inhibitory receptors. We have shown that adoptive transfer of NK cells can induce complete remissions in patients with refractory AML when combined with lymphodepleting chemotherapy and IL-2 to stimulate survival and in vivo expansion of the NK cells. Using this approach, 30-50% of patients with refractory attain clinical remissions. We hypothesize that clinical benefit is limited by the lack of antigen specificity and because IL-2 induces regulatory T cells (Treg) that inhibit NK cell

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3

Malyshkina, E. S., E. I. Vyalkova, and E. Yu Osipova. "WATER PURIFICATION WITH NATURAL SORBENTS." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture, no. 1 (February 27, 2019): 188–200. http://dx.doi.org/10.31675/1607-1859-2019-21-1-188-200.

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Industrial waste can be considered as technological and economical raw materials in related industries, and their disposal in compliance with environmental legislation can be environmentally efficient. Nowadays, researchers search for an effective but relatively cheap absorption material to extract various contaminants from water. Of great greatest interest are the industrial waste that can be used in wastewater treatment technology as a secondary raw material. As a rule, active coals are used in drinking water systems and deep wastewater treatment. In the Tyumen region, this type of sorbent i

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4

Hasim, Hasim. "Mangrove Ecosystem, Seagrass, Coral Reef: its Role in Self-Purification and Carrying Capacity in Coastal Areas." International Journal Papier Advance and Scientific Review 2, no. 1 (2021): 37–49. http://dx.doi.org/10.47667/ijpasr.v2i1.93.

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The coast is an area that has very high activity. It is estimated that 60% of the world's population lives in coastal areas. Various types of pollution enter this area. Halogenated hydrocarbons, pesticides, marine biotoxins, synthetic fertilizers, livestock and fishery waste, heavy metals, hot water discharges and radioactive substances. Coastal areas are natural ecosystems built by unique ecosystems including mangrove forests, seagrass beds and coral reefs. The three ecosystems interact dynamically and are interdependent. One of the characteristics of natural ecosystems is the ability to self

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NAZAROV, Vladimir D., Maxim V. NAZAROV, Vladimir Yu RAZUMOV, Maria A. DRYOMINA, and Anna A. OSIPOVA. "PURIFICATION OF NATURAL WATERS OF IRON AND MANGANESE." Urban construction and architecture 7, no. 4 (2017): 54–59. http://dx.doi.org/10.17673/vestnik.2017.04.9.

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It is established that application of the latest material and reagents for preparation of drinking water, allows to increase a loading fi lter run due to small contaminant capacity of the mineral fi ltering material and to lower economic costs by reagent economy as effi ciency of water purifi cation is reached even in case of its small doses.

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6

Yamada, K., D. Ujiie, and K. Nishikawa. "Study on purification mechanism in soil penetration facility for effluents from urban area and control strategies." Water Science and Technology 53, no. 2 (2006): 163–74. http://dx.doi.org/10.2166/wst.2006.050.

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In this study, demonstration experiments for removal of pollutants from road surface runoff during storm events were carried out under natural conditions in an outdoor pilot-scale soil penetration facility. In general, soil retains suspended matter and removes dissolved matter by adsorption. However, issues such as reduced purification capacity resulting from clogging and recovery of purification capacity during periods of intermittent supply of the storm water affect the removal efficiency of pollutants. Therefore, this study aimed at clarifying purification mechanisms during storm events and

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Moreira, Ana Sofia, Sandra Bezemer, Tiago Q. Faria, et al. "Implementation of Novel Affinity Ligand for Lentiviral Vector Purification." International Journal of Molecular Sciences 24, no. 4 (2023): 3354. http://dx.doi.org/10.3390/ijms24043354.

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The use of viral vectors as therapeutic products for multiple applications such as vaccines, cancer treatment, or gene therapies, has been growing exponentially. Therefore, improved manufacturing processes are needed to cope with the high number of functional particles required for clinical trials and, eventually, commercialization. Affinity chromatography (AC) can be used to simplify purification processes and generate clinical-grade products with high titer and purity. However, one of the major challenges in the purification of Lentiviral vectors (LVs) using AC is to combine a highly specifi

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Iurchenko, Valentyna, and Oksana Melnikova. "Use of Natural Zeolite to Improve Quality and Environmental Safety of Natural Surface Waters and Waste Surface Waters." Key Engineering Materials 925 (July 11, 2022): 135–41. http://dx.doi.org/10.4028/p-uk5c75.

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Natural zeolites are materials which, due to the peculiarities of their crystal structure and high adsorption and ion exchange properties, have wide prospects for use in technologies of adsorption purification of aquatic environments. The paper presents the results of laboratory research in dynamic and static conditions of sorption properties of natural zeolite, which is currently used for purification of natural water from suspended solids in industrial water treatment plants. The sorption capacity of different fractions of this zeolite to ammonium nitrogen, fluorides and petroleum products h

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9

Stepova, K., L. Sysa, and I. Vintonyk. "PURIFICATION OF FE3+ CONTAINING WASTEWATER USING NATURAL SORBENTS." Bulletin of Lviv State University of Life Safety 20 (January 24, 2020): 101–5. http://dx.doi.org/10.32447/20784643.20.2019.15.

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Abstract. Bentonites in natural or activated forms, i.e. after chemical treatment with acids, have high adsorption properties and are widely used as a natural adsorbent. The increase in the adsorption capacity of bentonite sorbents during heat treatment at 100–200 ° C is caused by the removal of adsorbed and chemical water that leads to an increase in the overall porosity. By thermal and hydrothermal treatments, the properties of natural sorbents can be varied within wide limits, giving them selectivity with respect to certain dissolved substances. It is known that the irradiation of water sys

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Hryniuk, Victoria I., Lyudmyla M. Arkhypova, and Marta V. Korchemlyuk. "Investigation of buffer capacity of the recreational environmental through the self-purification of natural-technogenic hydroecosystems in the Carpathian region." Journal of Geology, Geography and Geoecology 30, no. 3 (2021): 441–48. http://dx.doi.org/10.15421/112140.

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   The aim of research was to investigate the theoretical and practical aspects of the buffer capacity of the recreational environment of the Carpathian region of Ukraine through the improvement of self-purification assessment on the example of natural-technogenic hydroecosystems. Studies of the self-purification process were carried out on the example of the right tributaries of the river Svicha in the Carpathian region, which are water intakes of wastewater from the oil and gas industry enterprise of Ivano-Frankivsk region. The main factors influencing the natural process o

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11

Xiao, Chenguang, Zengyuan Chai, Dan Chen, et al. "Research on the Influence of River Morphological Changes on Water Self-Purification Capacity: A Case Study of the Shiwuli River in Chaohu Basin." Water 17, no. 11 (2025): 1694. https://doi.org/10.3390/w17111694.

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River pollution is a major issue in China’s urbanization process. Understanding the effects of river morphology and constructed wetlands on the self-purification capacity is crucial for water quality improvement. This study takes the Shiwuli River, a main tributary of Chaohu Lake, as an example. By monitoring the concentration changes of five water quality indicators—total nitrogen (TN), total phosphorus (TP), ammonia nitrogen (NH3-N), chemical oxygen demand (COD), and dissolved oxygen (DO)—in the river section for the years 2017 and 2024, we conducted a comparative analysis of the relationshi

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Shirinova, D. B., and S. R. Sadigova. "The purification of soil from oil contamination via natural sorbents." Azerbaijan Oil Industry, no. 04 (April 15, 2023): 55–58. http://dx.doi.org/10.37474/0365-8554/2023-04-55-58.

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The sorption properties of the natural materials considered wastes – cane and straw, cotton wastes, were studied in the research surveys carried out. The oil capacity of each sorbent was studied both in the static and dynamic conditions. The fact that the oil capacity of the cane and straw in dynamic conditions was 1.5 and 2.5 times lower than in the static ones, correspondingly testifies that the sorbent need some time for oil uptake. The optimum period for the sorption of the straw was 5 days, for the cane – 15 days, and for the halm – 10 days. It was established that regardless the large so

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Duca, Gheorghe, Maria Sandu, Viorica Gladchi, Angela Lis, and Vladislav Blonschi. "The biological self-purification capacity of natural and waste waters by assessing the ratio between biodegradable and toxic pollutants." Studia Universitatis Moldaviae. Seria Științe ale Naturii, no. 1(171) (June 2024): 218–29. http://dx.doi.org/10.59295/sum1(171)2024_26.

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The study emphasizes the significant impact of chemical pollution in the aquatic environment, originating from various sources - continuous, intermittent, and accidental - with particular focus on small rivers in the Republic of Moldova. The article applies the methodology for evaluating the self-purification capacity of natural and waste waters using parameters as biochemical oxygen demand (BOD5) and chemical oxygen demand (CODCr). These parameters are essential for assessing the contribution of pollutant biodegradation processes in natural and waste waters. The classification of waters into

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14

Phan, Trang Thi Phuong. "Intracellular expression and investigation of the possibility for purifying recombinant protein in Bacillus subtilis using reporter GFP." Science and Technology Development Journal 18, no. 1 (2015): 52–62. http://dx.doi.org/10.32508/stdj.v18i1.1034.

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most popular model organisms for Gramnegative and Gram-positive bacteria. Though this Gram-positive bacterium has a great advantage – endotoxin-free, the use of B. subtilis for expression and purification is not much interested as compared to E. coli. The reason for this is the lack of information and technology platforms on the production of recombinant proteins in B. subtilis. In the previous studies, pHT vector system has been demonstrated to allow the high levels of recombinant protein expression in B. subtilis. In this study, we used GFP as a marker for intracellular expression in B. subt

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15

Duca, Gheorghe, Elena Bunduchi, Viorica Gladchi, Lidia Romanciuc, and Nelli Goreaceva. "Estimation of the Natural Water Self-Purification Capacity from the Kinetic Standpoint." Chemistry Journal of Moldova 3, no. 1 (2008): 10–21. http://dx.doi.org/10.19261/cjm.2008.03(1).16.

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The current paper contains a synthesis of the processes of chemical auto-purification that take place in natural waters; examples of mechanisms of such processes occurring with participation of dissolved organic matter, oxidants of the biogeochemical cycle of oxygen and of transition metals including copper and iron are presented. The kinetic indicators of natural water quality are presented as well.

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Dali Ioseliani, Neli Kalabegashvili, Gulnara Balarjishvili, Liana Samkharadze, and Nino Nonikashvili. "Water purification from zinc ions using expanded perlite." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 214–20. http://dx.doi.org/10.30574/wjarr.2023.19.1.1278.

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Adsorptive capacities of expanded perlite, prepared on the basis of natural mineral of Georgia – perlite, in the process of aqueous solution purification from Zn (II) ions, have been first studied in the work. The dependencies of adsorption degree and volume capacity on adsorbent dosage, contact time, adsorbate concentration and pH of solution medium have been studied. Experiments have been conducted under dynamic conditions. Optimum conditions of Zn(II) ion adsorption have been established. Maximal efficiency of adsorption degree under these conditions was equal to 93,6, while volume capacity

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17

Dali, Ioseliani, Kalabegashvili Neli, Balarjishvili Gulnara, Samkharadze Liana, and Nonikashvili Nino. "Water purification from zinc ions using expanded perlite." World Journal of Advanced Research and Reviews 19, no. 1 (2023): 214–20. https://doi.org/10.5281/zenodo.10218121.

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Adsorptive capacities of expanded perlite, prepared on the basis of natural mineral of Georgia – perlite, in the process of aqueous solution purification from Zn (II) ions, have been first studied in the work. The dependencies of adsorption degree and volume capacity on adsorbent dosage, contact time, adsorbate concentration and pH of solution medium have been studied. Experiments have been conducted under dynamic conditions.Optimum conditions of Zn(II) ion adsorption have been established. Maximal efficiency of adsorption degree under these conditions was equal to 93,6, while volume capacity

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18

Bostan, Roxana, Mirel Glevitzky, Simona Varvara, et al. "Utilization of Natural Adsorbents in the Purification of Used Sunflower and Palm Cooking Oils." Applied Sciences 14, no. 11 (2024): 4417. http://dx.doi.org/10.3390/app14114417.

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The purification of used oils and their introduction into production cycles lead to reduction in environmental contamination. A simulation was conducted to study the thermal degradation of sunflower oil under varying temperatures over time. In the purification process of used cooking oil, an adsorption technique using zeolite and eggshell as an adsorbent (5, 10, 20, and 30 g/100 mL used oil) was applied. To optimize purification, different doses of thermally and chemically activated adsorbents were used, at different temperatures (30 and 80 °C). Therefore, this study was conducted in batch ope

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19

Bohdan, Liudmyla, Khrystyna Hutsul, Viktor Kurylenko, Olena Yanushevska, and Tetiana Dontsova. "NATURAL ALUMINOSILICATES IN WATER PURIFICATION TECHNOLOGIES: A SHORT REVIEW." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 40, no. 3 (2024): 43–55. https://doi.org/10.20535/2218-930032024324430.

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The review is devoted to the peculiarities of using natural aluminosilicates, in particular bentonites and zeolites, in water treatment technologies. A description of the general structure of clay materials, their chemical composition, characteristics of their building frameworks, and varieties of forms found in nature is given. Emphasis is placed on the adsorption characteristics of bentonite, which is the most common type of clay, including in Ukraine. In the description of natural zeolites, attention is paid to their spatial structure, namely the ratio of Si:Al in their natural modification

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20

Saito, M., Y. Magara, and Wisjnuprapto. "Study on self-purification capacity for organic pollutants in stagnant water." Water Science and Technology 46, no. 9 (2002): 137–46. http://dx.doi.org/10.2166/wst.2002.0224.

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Polluted water is abandoned or stored untreated in many places. Especially, small water bodies such as ditches, ponds, wastewater tanks, etc. have not yet well been considered. The self-purification stabilizes the wastewater, but oxygen supply limits the biodegradation process. In the natural environment, approximately 3 g oxygen can be dissolved per m2 per day if the water is completely deprived from dissolved oxygen; this is the magnitude of self-purification capacity. To improve the quality of polluted water with higher oxygen demand than natural reaeration capacity, enhanced aeration is re

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Xie, Yuan Hong, Hui Liu, and Hong Xing Zhang. "Prokaryotic Expression and Purification of Tomato Cnr Protein." Advanced Materials Research 690-693 (May 2013): 1247–51. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1247.

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Tomato fruit ripening mutant colorless non-ripening (Cnr) is an autosomal dominant mutant, obtained by natural mutation. The fruit of Cnr mutant was obviously immature, and the softening and lycopene accumulation of the Cnr fruit was significantly inhibited during the fruit ripening. In this work, we cloned the Cnr gene from the red ripe tomato fruit by RT-PCR, and constructed a prokaryotic expression vector. And the recombinant Cnr protein was induced by 1 mM IPTG in Escherichia coli BL21 (DE3), and purified by MBP affinity chromatography.

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Maciel, Gabriel Lira, Vitória Lima Bandeira, Estefanny Kaury Durans Pinheiro, et al. "Assessment of The Self-Purifying Capacity of The Low Course of The River Pimenta, São Luís – MA." Revista de Gestão Social e Ambiental 18, no. 12 (2024): e010454. https://doi.org/10.24857/rgsa.v18n12-156.

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Objectives: To investigate the self-purification capacity of the Pimenta River in São Luís, Maranhão, in response to contamination by organic pollutants. Theoretical Framework: Contamination of water bodies harms human health and ecosystems. Self-purification is a natural process that helps rebalance water after the introduction of pollutants, and is essential for assessing river recovery. Method: The Streeter-Phelps model was used to assess dissolved oxygen (DO) and biochemical oxygen demand (BOD) levels in the river, performed in the laboratory, in addition to flow measurements. Results and

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Zhou, Li, Ping Chen, Ming Li, and Yaping Zhou. "A Study of the Removal of Minor Amounts of H2S from Natural Gas by Activated Carbon." Adsorption Science & Technology 20, no. 10 (2002): 969–76. http://dx.doi.org/10.1260/026361702321705258.

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Studies have been made of the removal of minor amounts of H2S from natural gas by activated carbon. The surface alkalinity of the carbon had a considerable effect on the H2S capacity, although this was not permanent. Thus, when the carbon surface became neutral, the H2S content remained constant after the initial cycles of the purification/regeneration operation. The presence of water in natural gas was found to be critical for the use of activated carbon as a means of sweetening natural gas. However, although it enhanced the H2S capacity of the carbon, it made regeneration of the latter very

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Maceiras, Rocio, Jorge Feijoo, Leticia Perez-Rial, Victor Alfonsin, and Pablo Falcon. "Study of natural zeolites for hydrogen purification: CO2 adsorption capacity and kinetic mechanism." Fuel 376 (November 2024): 132732. http://dx.doi.org/10.1016/j.fuel.2024.132732.

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D. Ioseliani, G. Balarjishvili, N. Kalabegashvili, N. Nonikashvili, L. Samkharadze, and I. Javakhishvili. "Adsorptive removal of zinc icons from aqueous solutions in the presence of Georgia minerals." World Journal of Advanced Research and Reviews 22, no. 3 (2024): 438–44. http://dx.doi.org/10.30574/wjarr.2024.22.3.1701.

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The article represents the new chemically active natural minerals of Georgia – travertine and limestone. In this work, for the first time there have been studied adsorptive properties of the mentioned minerals in the process of aqueous solution purification from zinc ions. Materials under study are represented by unprocessed forms of travertine and limestone. Factors having an impact on sorption capacity of these minerals are analyzed based on the experiments. The dependence of degree of adsorption and adsorptive capacity on adsorbent dosage, time contact, adsorbate concentration and solution

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Stefan, Daniela Simina, Nicoleta Neacsu, Irina Pincovschi, and Mircea Stefan. "Water Quality and Self-purification Capacity Assessment of Snagov Lake." Revista de Chimie 68, no. 1 (2017): 60–64. http://dx.doi.org/10.37358/rc.17.1.5389.

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The aim of this paper is to identify the spatial and temporal distribution of chemical and physical parameters that characterize the water quality, the trophic state and the self-purification capacity assessment of Snagov Lake. The Snagov Lake is a natural lake located at 25-30 km North from Romania�s capital, Bucharest. The study was conducted during a five years period, from April 2010 until October 2014. The measurements used (temperature, pH, dissolved oxygen, transparency, chlorophyll-a, total phosphorus, TN/TP ratio) are presented in the form of spatial and temporal evolutions. For self-

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Bondarieva, Antonina, Iryna Yaichenia, Nataliia Zahorodniuk, Viktoriia Tobilko, and Volodymyr Pavlenko. "Water purification from cationic organic dyes using kaolin-based ceramic materials." Technology audit and production reserves 2, no. 3(64) (2022): 10–16. http://dx.doi.org/10.15587/2706-5448.2022.254584.

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The development of effective sorbents based on cheap natural raw materials for water purification from synthetic organic dyes is an important environmental problem. It is known that layered silicates are distinguished by mechanical strength, thermal and chemical resistance, high dispersion, ion exchange, availability and low cost. However, the main disadvantage of natural clays is their insufficiently high sorption capacity with respect to organic toxicants. Therefore, to increase it, the surface of clay minerals is modified by various physical and chemical methods. The object of study is kaol

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Antonina, Bondarieva, Yaichenia Iryna, Zahorodniuk Nataliia, Tobilko Viktoriia, and Pavlenko Volodymyr. "Water purification from cationic organic dyes using kaolin-based ceramic materials." Technology audit and production reserves 2, no. 3(64) (2022): 10–16. https://doi.org/10.15587/2706-5448.2022.254584.

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<em>The development of effective sorbents based on cheap natural raw materials for water purification from synthetic organic dyes is an important environmental problem. It is known that layered silicates are distinguished by mechanical strength, thermal and chemical resistance, high dispersion, ion exchange, availability and low cost. However, the main disadvantage of natural clays is their insufficiently high sorption capacity with respect to organic toxicants. Therefore, to increase it, the surface of clay minerals is modified by various physical and chemical methods. The object of study is

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Filippidis, A., G. Papastergios, N. Apostolidis, S. Filippidis, I. Paragios, and C. Sikalidis. "PURIFICATION OF URBAN WASTEWATERS BY HELLENIC NATURAL ZEOLITE." Bulletin of the Geological Society of Greece 43, no. 5 (2017): 2597. http://dx.doi.org/10.12681/bgsg.11667.

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Treatment of urban wastewaters (pHinitial 8.2), with 6 g of Hellenic Natural Zeolite (HENAZE) of an grain-size < 1.5 mm, gave overflowed clear water of pH 7.5, free of odors and improved quality parameters by 87% for the suspended particles, 88% for the color, 91% for the P2O5 content, 93% for the chemical oxygen demand (COD) and 97% for the NH4 content. Compared to previous experiment, the decrease of the amount of HENAZE by 1.5 g (20%) resulted to the purification worsening only by 1-2%. The HENAZE comes from Ntrista stream of Petrota village of Trigono Municipality of Evros Prefecture, N

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İjabika Sardarova, Sarkhan Gojayev, İjabika Sardarova, Sarkhan Gojayev, and Rashid Aliyev Rashid Aliyev. "CONTROL MODEL OF THE NATURAL GAS PURIFICATION PROCESS." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 46, no. 11 (2024): 140–49. https://doi.org/10.36962/pahtei46112024-16.

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The equipment used in the processes of cleaning and drying natural gas for transportation and consumption and the methods applied for drying gas were comparatively analyzed, it was noted that the absorption method is more widespread among these methods due to its simplicity and efficiency, it was shown that drying gas should be carried out immediately after its cleaning from mechanical and other impurities so that during the transportation and use of gas, there are no blockages in pipelines, malfunctions in measuring devices and other gas equipment. Drying gas prevents the formation of hydrate

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Usachev, M. N., Yu A. Efimova, and N. K. Zaitsev. "DETERMINATION OF THE STRUCTURE OF IMPURITIES IN TRIETHYLENE GLYCOL BY NMR AND HPLC-MS/MS OF HIGH RESOLUTION." Fine Chemical Technologies 11, no. 4 (2016): 35–42. http://dx.doi.org/10.32362/2410-6593-2016-11-4-35-42.

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The process of natural gas drying leads to accumulation of unstudied organic impurities in the used absorbent solutions. These impurities reduce the drying capacity of triethylene glycol. In order to increase the effectiveness of installations for drying natural gas it is necessary to purify triethylene glycol from the accumulated impurities. The absence of information on the structure and properties of these impurities considerably complicates the purification of the absorbent solutions. In this study the structures of impurities accumulated in triethylene glycol were determined by NMR and hi

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32

D., Ioseliani, Balarjishvili G., Kalabegashvili N., Nonikashvili N., Samkharadze L., and Javakhishvili I. "Adsorptive removal of zinc ions from aqueous solutions in the presence of Georgia minerals." World Journal of Advanced Research and Reviews 22, no. 3 (2024): 438–44. https://doi.org/10.5281/zenodo.14729657.

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The article represents the new chemically active natural minerals of Georgia – travertine and limestone. In this work, for the first time there have been studied adsorptive properties of the mentioned minerals in the process of aqueous solution purification from zinc ions. Materials under study are represented by unprocessed forms of travertine and limestone. Factors having an impact on sorption capacity of these minerals are analyzed based on the experiments.  The dependence of degree of adsorption and adsorptive capacity on adsorbent dosage, time contact, adsorbate concentration a

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33

An, Nguyen Hoang, Dang Tat Truong, and Tran Van Hieu. "Cloning, expression and purification of m-cell specific binding peptide (CO1) fused with GFP." Vietnam Journal of Biotechnology 14, no. 4 (2018): 599–604. http://dx.doi.org/10.15625/1811-4989/14/4/12243.

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Despite many advantages over injection vaccines such as cost effectiveness, safety and easy to use, and so on, oral vaccines are negligibly concerned. This is mostly because of the availability of vast surface in the gastro-intestinal tract, thereby requiring lot of antigens which could hamper their potential. To circumvent this issue, a novel strategy for targeting antigens to M cells (microfold cells), a minority of cells located in the small intestine for antigen transportation, is utilized by making a fusion protein comprised of an antigen with an M cell specific ligand. Discovered via bio

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Skrastina, Dace, Ivars Petrovskis, Rasa Petraityte, et al. "Chimeric Derivatives of Hepatitis B Virus Core Particles Carrying Major Epitopes of the Rubella Virus E1 Glycoprotein." Clinical and Vaccine Immunology 20, no. 11 (2013): 1719–28. http://dx.doi.org/10.1128/cvi.00533-13.

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ABSTRACTThree variants of the major rubella virus (RV) E1 protein virus-neutralizing epitope from position 214 to 285 were exposed on the hepatitis B virus (HBV) C-terminally truncated core (HBcΔ) in a virus-like particle (VLP) vector and were produced inEscherichia coli. All three chimeras demonstrated VLPs in bacterial cell lysates, but only HBcΔ-E1(245-285) demonstrated the correct VLP structure after purification. The other chimeras, HBcΔ-E1(214-285) and HBcΔ-E1(214-240), appeared after purification as non-VLP aggregates of 100 to 900 nm in diameter according to dynamic light scattering da

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Xiao, Size, and Zilin Zhang. "Introduction of organisms to address soil quality in wetland ecosystems." Highlights in Science, Engineering and Technology 83 (February 27, 2024): 64–70. http://dx.doi.org/10.54097/z4tfsg36.

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The wetland ecosystem, as known as the “lung of the earth”, is an important component of the biosphere. The size of wetlands can vary from a few square kilometers to tens of thousands of square kilometers, and the location of wetlands also varies greatly, from inland to coastal, from rural to urban, and is extremely widely distributed. In addition, wetlands are one of the ecosystems with the strongest self-purification capacity in the natural environment, and their purification capacity is 1.5 times that of forests in the same area, so the protection of wetland ecosystems occupies a great posi

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Kim, Taewoo, Junsung Noh, Bong-Oh Kwon, et al. "Natural purification capacity of tidal flats for organic matters and nutrients: A mesocosm study." Marine Pollution Bulletin 154 (May 2020): 111046. http://dx.doi.org/10.1016/j.marpolbul.2020.111046.

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Bodoque, J. M., J. Ladera, J. L. Yela, et al. "Recovering hydromorphological functionality to improve natural purification capacity of a highly human-modified wetland." Ecological Engineering 103 (June 2017): 332–43. http://dx.doi.org/10.1016/j.ecoleng.2016.02.013.

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Zahid, Mudasir, Yerlan Doszhanov, Karina Saurykova, et al. "Modification and Application of Natural Clinoptilolite and Mordenite from Almaty Region for Drinking Water Purification." Molecules 30, no. 9 (2025): 2021. https://doi.org/10.3390/molecules30092021.

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In this paper, the modification of natural clinoptilolite and mordenite zeolites from Almaty using acid treatment is addressed for the purposes of improving adsorption performance and for drinking water purification. Structural chemical transformation was characterized by the use of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Scanning electron microscope (SEM) techniques. Acid treatment led to a partial dealumination that was responsible for an increase in the number of surface defects and micropores, improvement in ion exchange capacity, and selectivity toward

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Wang, Wei, Wujie Lv, Jiaying Li, Xiang Jiao, and Zhiqing Ma. "POLLUTION REMOVAL CAPACITIES OF AQUATIC PLANT SPECIES IN THE DATONG WETLAND PARK IN NORTH CHINA." Journal of Environmental Engineering and Landscape Management 31, no. 4 (2023): 248–54. http://dx.doi.org/10.3846/jeelm.2023.20049.

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The purification effect of a natural wetland landscape is often low when the focus is placed on the landscape effect. The effective combination of constructed wetland technology with landscape construction is challenging. Taking the Yuhe Wetland Park in Datong, Shanxi Province, China, as an example, the COD, phosphorus, and nitrogen removal capacities of aquatic plant species were determined, as well as the effects of the soil and the microbial communities. The highest COD and P removal capacity was observed for Typha orientalis Presl. which the purification rate reached 76.9% and 76.6%, and t

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Prodanović, Jelena M., Nataša M. Nastić, Marina B. Šćiban, Dragana V. Lukić, Vesna M. Vasić, and Nevena T. Blagojev. "Fractionation of proteins from natural coagulant from common bean on ion-exchanger AmberliteTM IRA 900 Cl and comparison with AmberliteTM IRA 958 Cl." Romanian Biotechnological Letters 28, no. 5/2023 (2025): 4101–12. https://doi.org/10.25083/rbl/28.5/4101.4112.

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Turbidity reduction in water and wastewater treatment typically involves chemical coagulants like alum, iron salts, and acrylamide. While natural coagulants offer benefits, their main drawback is the organic load in treated water, which can be addressed through purification. In this work, proteins from a crude extract obtained with 0.5 mol L-1 NaCl from Phaseolus vulgaris seeds were first precipitated by ammonium sulfate and then redissolved and purified on the anion exchange resin AmberliteTM IRA 900 Cl in batch mode. Prior to their purification, optimization of adsorption conditions and elut

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Cisteacov, Maxim, Gheorghe Duca, Vladislav Blonschi, Viorica Gladchi, Angela Lis, and Elena Bunduchi. "Dynamics of the self-purification processes in the waters of the Dniester river during the years 2015-2024 (Dubasari - Vadul lui Voda section)." Chemistry Journal of Moldova 20, no. 1 (2025): 17–27. https://doi.org/10.19261/cjm.2025.1318.

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It has been evaluated the dynamics of the self-purification processes of the Dniester River waters in the section from Dubasari to Vadul lui Voda based on the analysis of the parameters: biochemical oxygen demand (BOD5), chemical oxygen demand (CODCr), thiol content, and the inhibition capacity of the waters in carrying out chemical self-purification processes through free radicals (ΣkiSi). According to the BOD5 values, the Dniester waters belong to quality classes II and I, and according to the CODCr parameter, they fall into quality classes II and III. The thiol content is typical of fresh w

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Pereira-dos-Santos, Taissa, David Roiz, Ricardo Lourenço-de-Oliveira, and Christophe Paupy. "A Systematic Review: Is Aedes albopictus an Efficient Bridge Vector for Zoonotic Arboviruses?" Pathogens 9, no. 4 (2020): 266. http://dx.doi.org/10.3390/pathogens9040266.

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Mosquito-borne arboviruses are increasing due to human disturbances of natural ecosystems and globalization of trade and travel. These anthropic changes may affect mosquito communities by modulating ecological traits that influence the “spill-over” dynamics of zoonotic pathogens, especially at the interface between natural and human environments. Particularly, the global invasion of Aedes albopictus is observed not only across urban and peri-urban settings, but also in newly invaded areas in natural settings. This could foster the interaction of Ae. albopictus with wildlife, including local re

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Pyrih, Marta, and Zenovii Znak. "Increasing the sorption capacity of the native form of clinoptylolite for Mn2+ ions to obtain sorbents modified with manganese oxides." Technology audit and production reserves 1, no. 3(81) (2025): 19–23. https://doi.org/10.15587/2706-5448.2025.323870.

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The object of the research was the process of sorption of Mn2+ ions by natural clinoptilolite (native form) under the influence of ultrasonic (US) radiation for the subsequent production of sorbents modified with manganese oxides, which have additional catalytic and oxidative capacity. Such sorbents with additional functions will be widely used in water purification processes from iron and manganese ions, hydrogen sulphide and a number of organic compounds, as well as highly dispersed and colloidal particles. This will allow combining the processes of purification of dispersed particles and so

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TUNAKOVA, YU A., G. N. GABDRAKHMANOVA, V. S. VALIEV, and O. V. STOYANOV. "USE OF ACTIVATED NATURAL ZEOLITE AS ADSORBENT FOR PURIFICATION OF NATURAL WATER FROM METAL IONS." Herald of Technological University 27, no. 1 (2024): 47–51. http://dx.doi.org/10.55421/1998-7072_2024_27_1_47.

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The possibility of using natural zeolites as adsorbents for water treatment is shown. For experimental studies of sorption properties of natural zeolite was used zeolite-containing rock of the Tatarsko-Shatrashansky deposit, with a fraction size less than 1 mm. The structure, physical and chemical properties of this zeolite are considered. Features of different methods of zeolite activation are given. Acid treatment is an effective way of activation, which has a significant effect on the chemical composition and structure of natural minerals. The comparative analysis of acid and alkaline activ

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Kumar, Mukesh, Aruna K. Behera, Sanjay Kumar, et al. "Expression, Purification and Characterization of Peanut (Arachis hypogaea) Agglutinin (PNA) from Baculovirus Infected Insect Cells." Bioscience Reports 19, no. 3 (1999): 227–34. http://dx.doi.org/10.1023/a:1020234005099.

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Peanut (Arachis hypogaea) seed lectin, PNA is widely used to identify tumor specific antigen (T-antigen), Galβ1-3GalNAc on the eukaryotic cell surface. The functional amino acid coding region of a cDNA clone, pBSH-PN was PCR amplified and cloned downstream of the polyhedrin promoter in the Autographa californica nucleopolyhedrovirus (AcNPV) based transfer vector pVL1393. Co-transfection of Spodoptera frugiperda cells (Sf9) with the transfer vector, pAcPNA and AcRP6 (a recombinant AcNPV having B-gal downstream of the polyhedrin promoter) DNAs produced a recombinant virus, AcPNA which expresses

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Susilawati, E. Frida, Andriayani, et al. "Characterization of Adsorbents Based on Pahae Natural Zeolite and Candlenut Shell Activated Carbon for Peat Water Purification." Journal of Physics: Conference Series 2866, no. 1 (2024): 012010. http://dx.doi.org/10.1088/1742-6596/2866/1/012010.

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Abstract The importance of developing effective adsorbents for environmental applications cannot be overstated, particularly in the context of water and wastewater treatment. Previous research has extensively explored various natural and synthetic materials for their adsorption capabilities. Pahae natural zeolite, a naturally occurring aluminosilicate mineral, is known for its excellent ion-exchange properties and high surface area, making it a promising candidate for pollutant removal. Similarly, activated carbon derived from agricultural by-products, such as candlenut shells, has been recogn

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Caroko, Novi, and Sukamta Sukamta. "Analysis of nitrogen adsorption capability at various activation temperatures of Klaten natural zeolite." Jurnal Polimesin 22, no. 3 (2024): 305. http://dx.doi.org/10.30811/jpl.v22i3.4882.

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The Pressure Swing Adsorption (PSA) method operates by passing air through an adsorbent to produce concentrated oxygen gas. Zeolites are commonly utilized as adsorbents due to their ability to adsorb nitrogen from the surrounding air. Two types of zeolites commonly employed are natural and synthetic zeolites. While the utilization of natural zeolites as adsorbents in oxygen purification remains limited, their potential as an alternative adsorbent is worth exploring in this field. This study focused on developing physically activated Klaten natural zeolite as an adsorbent to enhance oxygen puri

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Fayzullayev, Normurot, and Ikromjon Mamadoliev. "Study of methods of chemisorption purification of hydrogen sulfide in natural gases with natural sorbent." E3S Web of Conferences 401 (2023): 04052. http://dx.doi.org/10.1051/e3sconf/202340104052.

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We know from the literature that the cost-effectiveness of using zeolites to purify natural gas is much higher than other natural resources. In the laboratory, CaCl2∙ZnCl2∙MnCl2/HQZ were prepared by treating bentonite obtained from local raw materials with calcium, zinc, and magnesium salts. Local raw materials are activated by mechanical-thermal and chemical processing and are delivered in the form of dark-colored granules (tablets) up to 5 mm in diameter. The sorption potential of high-silica zeolite obtained from local raw materials by metal salts and heat treatment was studied, and a techn

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Jiang, Canping, James B. Wechuck, William F. Goins, et al. "Immobilized Cobalt Affinity Chromatography Provides a Novel, Efficient Method for Herpes Simplex Virus Type 1 Gene Vector Purification." Journal of Virology 78, no. 17 (2004): 8994–9006. http://dx.doi.org/10.1128/jvi.78.17.8994-9006.2004.

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ABSTRACT Herpes simplex virus type 1 (HSV-1) is a promising vector for gene therapy applications, particularly at peripheral nerves, the natural site of virus latency. Many gene vectors require large particle numbers for even early-phase clinical trials, emphasizing the need for high-yield, scalable manufacturing processes that result in virus preparations that are nearly free of cellular DNA and protein contaminants. HSV-1 is an enveloped virus that requires the development of gentle purification methods. Ideally, such methods should avoid centrifugation and may employ selective purification

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Givi Papava, Marina Gurgenishvili, Ia Chitrekashvili, Eter Gavashelidze, and Gelashvili Nazi. "IONITES ON THE BASIS OF CLINOPTILOLITE." International Academy Journal Web of Scholar, no. 10(40) (October 31, 2019): 39–41. http://dx.doi.org/10.31435/rsglobal_wos/31102019/6740.

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   Organomineral ionites have been synthesized, in which natural mineral sorbent is chemically bound to organic part of a molecsule, containing ionogen groups. Ionogen groups of these ionites contribute to efficient exchange in water solutions. They might be used for cleaning drainage waters and technical solutions, as well as for purification of medicinal preparations from various admixes. Hydrogen forms of natural zeolite - clinoptilolite and bromoacetic acid were used to resolve this problem. Chemical modification of clinoptilolite, by inculcation of ionogen groups into ze

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