Qiaoguang Li¹, Xuming Yan¹, Jialong Chen¹, Xugang Shu^1,*, Puyou Jia^2,*, Xiangjun Liang³

Journal of Renewable Materials, Vol.9, No.10, pp. 1673-1684, 2021, DOI:10.32604/jrm.2021.014695

Abstract Environmental cleaning is an important aspect of bacteria control. Ethyl cellulose microcapsules containing potassium monopersulfate (PMCM) were prepared by emulsified solvent diffusion method. The chemical structure and microstructure of the obtained PMCM was characterized by methods of Fourier transform infrared spectroscopy (FT-IR), optical microscopy, scanning electron microscopy and X-ACT energy dispersive X-ray spectroscopy. The SEM micrographs of the PMCM containing 21.6% of C, 46.8% of O, 10.7% of S and 19.4% of K was relatively smooth. Thermal stability, sustained release performance, and antimicrobial activity of PMCM were investigated. The results showed that the drug loading More >

Judith Constantino-Alcazar¹, Miguel Abud-Archila¹, Benjamín Valdez-Salas³, Federico Gutierrez-Miceli¹, Carlos Ceceña-Duran², Blanca López-Valenzuela², Daniel Gonzalez-Mendoza^2,*,*

Journal of Renewable Materials, Vol.9, No.10, pp. 1699-1706, 2021, DOI:10.32604/jrm.2021.015645

Abstract In the present study, the green synthesis of potassium nanoparticles (K-NPs) was assessed using aqueous extract of Sideroxylon capiri. The potassium nanoparticles were analyzed by UV-visible spectroscopic techniques, X-ray spectrometers of energy dispersive (SEM-EDS) and dynamic light scattering. The results showed high values at 3.5 keV confirming the formation of potassium nanoparticles and the SEM analysis showed an agglomerated particles size between 360 to 200 nm with a spherical morphology. The K-NPs showed an effective antibacterial activity against the test organisms mainly with Bacillus cereus, Enterobacter aerogenes, Fusarium solani and Botrytis cinerea. However further studies about nanotoxicity of K-NPs are More >

Tantan Zhang^1,2,#, Xiaoping He^3,#, Binglin Chen^1,#, Longxin He^1,2, Xiangru Tang^1,2,*

Phyton-International Journal of Experimental Botany, Vol.90, No.3, pp. 815-826, 2021, DOI:10.32604/phyton.2021.014168

Abstract As one of the most important nutrients for plants, potassium (K) has substantial effects on growth and development of crops. Present study was conducted in three different sites in South China in late season in 2019 with the objective to study the effects of different applied amounts of K fertilizer on yield formation and lodging of rice. Four K fertilizer treatments, K₀: 0 kg potassium oxide (K₂O) ha⁻¹ (control); K₁: 64.20 kg K₂O ha⁻¹ ; K₂: 128.55 kg K₂O ha⁻¹ and K₃ 153.90 kg K₂O ha⁻¹ were applied in the field experiment. The results showed that K₂ and K₃ treatments significantly increased… More >

Abdul Awal Chowdhury Masud¹, Md. Fazlul Karim¹, M. H. M. Borhannuddin Bhuyan², Jubayer Al Mahmud³, Kamrun Nahar⁴, Masayuki Fujita⁵, Mirza Hasanuzzaman^1,*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 353-372, 2021, DOI:10.32604/phyton.2021.013259

Abstract Drought is the most common form of abiotic stress that reduces plant growth and productivity. It causes plant injuries through elevated production of reactive oxygen species (ROS). Potassium (K) is a vital plant nutrient that notably ameliorates the detrimental effect of drought stress in the plant. A pot experiment was conducted at the Laboratory of Plant Stress Responses, Faculty of Agriculture, Kagawa University, Japan, under controlled environment of green house to explore the role of K in mitigating drought severity in wheat (Triticum asevitum L.) seedlings. Three days after germination, seedlings were exposed to three water… More >

Hua Zhang^#, Zhongmin Yang^#, Xilong You, Youqiang Heng, Yan Wang^*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 389-402, 2021, DOI:10.32604/phyton.2021.014156

Abstract Potassium (K⁺) is a necessary nutrient for plant growth and crop production. The K⁺ transporter plays crucial roles in the absorption and transport of K⁺ in plants. Most K⁺ transporters in Arabidopsis have been reported, but AtKUP12, which is a member of the KT/KUP/HAK family, has not yet been the subject of relevant in-depth research. In the present study, we demonstrated that AtKUP12 plays a crucial role in K⁺ uptake in Arabidopsis under 100 μM lowK⁺ and 125 mM salt stress conditions. AtKUP12 transcripts were induced by K⁺ deficiency and salt stress. We analyzed the K⁺ uptake of AtKUP12 using the… More >

Mercedes Georgina Ramírez-Aragón¹, Victoria Jared Borroel-García¹, Ramón Valenzuela-Soto¹, Ricardo David Valdez-Cepeda², Francisco Javier Wong-Corral³, José Luis García-Hernández^4,*

Phyton-International Journal of Experimental Botany, Vol.90, No.2, pp. 533-541, 2021, DOI:10.32604/phyton.2021.013166

Abstract The extraction of bioactive compounds has become one of the most interesting areas of modern chemistry. For therapeutic reasons, it´s important to obtain antimicrobial agents from natural origin. The objective of the present study was to determine the inhibitory effect of ethanolic extract of basil (Ocimum basilicum L. var. Red Rubin) subjected to different concentrations of potassium (K⁺) on the activity of three bacterial strains that are pathogens in humans. Susceptibility was evaluated by inhibition surface and these results were compared to two antibiotics: Gentamicin (GE) and Ciprofloxacin (CPF) for their efficacy against each bacterial strain. Analyzed More >

YAN WANG^A, LI-FANG ZHANG^A,B,C,*, XIAO-QI WANG^B

Journal of Polymer Materials, Vol.37, No.1-2, pp. 77-89, 2020, DOI:10.32381/JPM.2020.37.1-2.6

Abstract The effect of 18-crown-6 ether (18C6) on the anionic polymerization of ε-caprolactone (ε -CL) using potassium tert-butoxide (t-BuOK) as the initiator was studied. The experimental results showed that 18C6 in combination with t-BuOK exhibited high selectivity for ring opening relative to trans-esterification and improved control toward the ROP of ε-CL, producing poly(ε- caprolactone) (PCL) with much higher molecular weight and relatively narrow distribution compared to those using t-BuOK alone as the initiator.The influences of reaction conditions, such as monomer concentration, monomer/initiator molar ratio, and [18C6]/[t-BuOK] molar ratio, as well as reaction temperature and time on More >

Parvin Nassiri¹, Sajad Zare^2,*, Mohammad Reza Monazzam¹, Akram Pourbakht³, Rasoul Hemmatjo⁴, Hossein ElahiShirvan²

Sound & Vibration, Vol.54, No.1, pp. 17-25, 2020, DOI:10.32604/sv.2020.08395

Abstract Exposure to noise can lead to anatomical, nonauditory, and auditory impacts. The auditory influence of noise exposure is manifested in the form of Noise-induced hearing loss (NIHL). The current study aimed at present a signal to noise ratio model of otoacoustic emission of rats’ ears in the light of the combined effect of sound pressure level, sound frequency, exposure time, and potassium concentration of the used water. In total, 36 adult male rates, whose age varied from 3 to 4 months and had a weight of 200 ± 50 g, were randomly divided into 12… More >

Yang Yu¹, Ramiz Boy^1,2,*, Richard Kotek¹

Journal of Renewable Materials, Vol.7, No.1, pp. 41-55, 2019, DOI:10.32604/jrm.2019.00105

Abstract Current industrial methods for dissolution of cellulose in making regenerated cellulose products are relatively expensive, toxic and dangerous and have environmental problems coming with the hazard chemical wastes. To solve these problems, a novel ethylenediamine and potassium thiocyanate (ED/KSCN) solvent system was developed, that is economical, ecofriendly, and highly efficient. The ED/KSCN solvent system was proven to be a suitable solvent for fabricating cellulose (blended with other polymers) membranes. In this study, gluten was used to develop nonporous membranes with cellulose. The method of casting these membranes provided better ones than the former researchers’ techniques. More >

Díaz-López E¹, A Morales-Ruíz¹, A Olivar-Hernández¹, HR Bravo-Delgado², JM Loeza-Corte³

Phyton-International Journal of Experimental Botany, Vol.87, pp. 18-24, 2018, DOI:10.32604/phyton.2018.87.018

Abstract Sunflower is a crop that is used as ornamental, oleaginous, forage, and currently as a bioremediation plant, of hard water affected soils. For this reason, the main objective of this investigation was to study the effect of potassium fertilization on yield under field conditions, and the effect of gibberellic acid (GA₃), at postharvest of inflorescences. Two experiments were established, under field and laboratory conditions. In the field experiment, four levels of potassium, 0, 50, 100 and 150 kg/ha were evaluated, under a randomized complete block design and four replicates (4×4) = 16 experimental units. The variables… More >