Potassium silicate drilling fluids （PSDF） are a waste product of the oil and gas industry with potential for use in land reclamation. Few studies have examined the influence of PSDF on abundance and composition of s...Potassium silicate drilling fluids （PSDF） are a waste product of the oil and gas industry with potential for use in land reclamation. Few studies have examined the influence of PSDF on abundance and composition of soil bacteria and fungi. Soils from three representative locations for PSDF application in Alberta, Canada, with clay loam, loam and sand textures were studied with applications of unused, used once and used twice PSDF. For all three soils, applying ≥40 m^3/ha of used PSDF significantly affected the existing soil microbial flora. No microbiota was detected in unused PSDF without soil. Adding used PSDF to soil significantly increased total fungal and aerobic bacterial colony forming units in dilution plate counts, and anaerobic denitrifying bacteria numbers in serial growth experiments. Used PSDF altered bacterial and fungal colony forming unit ratios of all three soils.展开更多
Drought stress has become more common in recent years as a result of climate change impacts on the production of banana crops and other fruit trees.The growth and productivity of Musa spp are severely impacted by the ...Drought stress has become more common in recent years as a result of climate change impacts on the production of banana crops and other fruit trees.The growth and productivity of Musa spp are severely impacted by the gradual degradation of water resources and the erratic distribution pattern of annual precipitation amount.The aim of the work includes increased drought tolerance in light of water scarcity in the world as a result of the bananas’being gluttonous for water needs.This investigation was carried out from 2019 to 2020 to study the effect of potassium silicate on morphological growth and biochemical parameters of Musa acuminata L under drought stress by PEG.As a result,drought stress reduced the morphological characteristics such as shoots number,shoot length,roots number,and survival percentage and biochemical characteristics such as chlorophyll a,b,carotenoids,stomatal status,and RWC.While proline content increased in the leaf of M.acuminata L.Media complemented with K2SiO3(2 to 6 mM)either individually or in combination with PEG led to an improvement in all morphological and biochemical characteristics.The activities of CAT,POD,and PPO enzymes increased significantly compared to control.Furthermore,the lowest PPO,CAT,and POD activity were achieved.Additionally,K2SiO3 treatments under drought stress successfully enhanced the leaf stomatal behavior.Our results suggest that K2SiO3 can help to maintain plant integrity in the tested cultivar under drought stress.展开更多
Drought stress negatively impacts agricultural crop yields.By using mineral fertilizers and chemical regulators to encourage plant development and growth,its impact can be mitigated.The current study revealed that exo...Drought stress negatively impacts agricultural crop yields.By using mineral fertilizers and chemical regulators to encourage plant development and growth,its impact can be mitigated.The current study revealed that exogenous silicon(Si)(potassium silicate;K2Si2O5 at 1000 ppm)and molybdenum(Mo)(ammonium molybdate;(NH4)6Mo7O24•4H2O at 100 ppm)improved drought tolerance in quinoa(Chenopodium quinoa Willd).The research was conducted in a randomized complete block design with three biological replicates.The treatments comprised T0(control,water spray),T4(drought stress),and T1,T2,T3,T5,T6,and T7,i.e.,foliar applications of silicon and molybdenum solutions individually and in combination.Results revealed that drought stress predominantly affected the quinoa yield by decreasing the growth,physiological,biochemical,metabolic,hormonal,antioxidant,and ionic attributes.On the contrary,the supplementation of Si and Mo enhanced the growth attributes(shoot,panicle,and root length,No.of leaves per plant,shoot and panicle fresh/dry weight,root fresh/dry weight,No.of seeds and seeds fresh weight per plant),physiological traits(relative water content,chlorophyll,and carotenoids content),biochemical characteristics(total soluble sugars,protein and lipid content),metabolic attributes(total phenolic,flavonoids,tannins,lycopene,carotene),hormonal contents(indoleacetic acid(IAA),gibberellic acid(GA),salicylic acid(SA)),enzymatic and non-enzymatic antioxidants(catalase,peroxidase and ascorbic acid),and ionic content(potassium(K),(calcium)Ca,(magnesium)Mg,Si and Mo).Under drought stress,Si and Mo reduced electrolyte leakage,abscisic acid(ABA)content,H_(2)O_(2) production,and sodium uptake.In addition,combined Si and Mo supplementation elevated the expression of the sucrose non-fermenting 1(SNF1)-associated protein kinase 2(SnRK2)(CqSNRK2.10)gene in quinoa under drought stress vs.control,signifying an essential regulatory function for Si and Mo-induced drought stress tolerance.These results imply that the exogenous administration of Si and Mo in combination might be an efficient method to alleviate drought stress on quinoa.展开更多
In our modern world, where conserving energy is highly valued, thermal insulation panels play a crucial role in reducing heat transfer between two spaces, surfaces, or materials. They are used to enhance the energy ef...In our modern world, where conserving energy is highly valued, thermal insulation panels play a crucial role in reducing heat transfer between two spaces, surfaces, or materials. They are used to enhance the energy efficiency of various industrial applications by minimizing heat loss and temperature control. These panels function as silent protectors, aiding in reducing energy consumption and making things more sustainable and better for the environment. This is where composite materials come in;they are known for their lightweight nature, high strength-to-weight ratio, and excellent thermal insulation properties and have gained significant attention. Researchers are actively engaged in various studies aimed at enhancing these materials further. This research project focuses on the development of kaolin and glass fiber-reinforced composites for thermally insulating panels, to which natural strengthening materials like corn husk and bamboo fibers are added. The aim is to create cost-effective and efficient composite materials for thermal insulation applications by incorporating these components with a binder consisting of potassium silicate, hydroxide, and distilled water. This project involves conducting compression tests, bending tests, impact tests, thermal conductivity measurements, and microscopic analysis to evaluate the mechanical and thermal properties of the developed composites. The profound impact of these engineered composites on thermal insulation panels stands to revolutionize energy conservation efforts, offering a potent avenue to minimize heat loss and enhance overall energy efficiency across an array of industrial sectors.展开更多
The metabolic activity of the fruits continues even after harvest,which results in the loss of bioactive compounds,a decrease in the quality of the fruits,softening and browning,among other negative effects.The use of...The metabolic activity of the fruits continues even after harvest,which results in the loss of bioactive compounds,a decrease in the quality of the fruits,softening and browning,among other negative effects.The use of certain elements such as silicon can improve postharvest quality,since it is involved in the metabolic,physiological and structural activity of plants,moreover can increase the quality of the fruits.In addition,nanotechnology has had a positive impact on crop yield,nutritional value,fruit quality and can improve antioxidant activity.For these reasons,the use of beneficial elements such as silicon in the form of nanoparticles can be a viable option to improve the characteristics of the fruits.In the present study was evaluated the application of potassium silicate(125,250 and 500 mg L^(−1))and SiO_(2) nanoparticles(125,250 and 500 mg L^(−1))during the development of the crop.The results showed that the application of silicon(potassium silicate and silicon nanoparticles)increased the content of total soluble solids(up to 15.6%higher than control),titratable acidity(up to 38.8%higher than control),vitamin C(up to 78.2%higher than control),phenols(up to 22%higher than control),flavonoids(up to 64.6%higher than control),and antioxidant activity in lipophilic compounds(up to 56.2%higher than control).This study suggests that the use of silicon can be a good option to increase the content of bioactive compounds in cucumber fruits when they are applied during the development of the crop.展开更多
基金provided by Marquis Alliance Ltd. as part of a multi-disciplinary research program on environmental effects of PSDFsupported by a Ph.D. Scholarship from the China Scholarship Council
文摘Potassium silicate drilling fluids （PSDF） are a waste product of the oil and gas industry with potential for use in land reclamation. Few studies have examined the influence of PSDF on abundance and composition of soil bacteria and fungi. Soils from three representative locations for PSDF application in Alberta, Canada, with clay loam, loam and sand textures were studied with applications of unused, used once and used twice PSDF. For all three soils, applying ≥40 m^3/ha of used PSDF significantly affected the existing soil microbial flora. No microbiota was detected in unused PSDF without soil. Adding used PSDF to soil significantly increased total fungal and aerobic bacterial colony forming units in dilution plate counts, and anaerobic denitrifying bacteria numbers in serial growth experiments. Used PSDF altered bacterial and fungal colony forming unit ratios of all three soils.
基金funded by Princess Nourah bint Abdulrahman University Researchers Supporting Project No.(PNURSP2022R188)Princess Nourah bint Abdulrahman University,Riyadh,Saudi Arabia。
文摘Drought stress has become more common in recent years as a result of climate change impacts on the production of banana crops and other fruit trees.The growth and productivity of Musa spp are severely impacted by the gradual degradation of water resources and the erratic distribution pattern of annual precipitation amount.The aim of the work includes increased drought tolerance in light of water scarcity in the world as a result of the bananas’being gluttonous for water needs.This investigation was carried out from 2019 to 2020 to study the effect of potassium silicate on morphological growth and biochemical parameters of Musa acuminata L under drought stress by PEG.As a result,drought stress reduced the morphological characteristics such as shoots number,shoot length,roots number,and survival percentage and biochemical characteristics such as chlorophyll a,b,carotenoids,stomatal status,and RWC.While proline content increased in the leaf of M.acuminata L.Media complemented with K2SiO3(2 to 6 mM)either individually or in combination with PEG led to an improvement in all morphological and biochemical characteristics.The activities of CAT,POD,and PPO enzymes increased significantly compared to control.Furthermore,the lowest PPO,CAT,and POD activity were achieved.Additionally,K2SiO3 treatments under drought stress successfully enhanced the leaf stomatal behavior.Our results suggest that K2SiO3 can help to maintain plant integrity in the tested cultivar under drought stress.
基金the Researchers Supporting Project No.RSP2024R191,King Saud University,Riyadh,Saudi Arabiasupported by the IFS-International Foundation for Science,Stockholm,Sweden(C/5895-1).
文摘Drought stress negatively impacts agricultural crop yields.By using mineral fertilizers and chemical regulators to encourage plant development and growth,its impact can be mitigated.The current study revealed that exogenous silicon(Si)(potassium silicate;K2Si2O5 at 1000 ppm)and molybdenum(Mo)(ammonium molybdate;(NH4)6Mo7O24•4H2O at 100 ppm)improved drought tolerance in quinoa(Chenopodium quinoa Willd).The research was conducted in a randomized complete block design with three biological replicates.The treatments comprised T0(control,water spray),T4(drought stress),and T1,T2,T3,T5,T6,and T7,i.e.,foliar applications of silicon and molybdenum solutions individually and in combination.Results revealed that drought stress predominantly affected the quinoa yield by decreasing the growth,physiological,biochemical,metabolic,hormonal,antioxidant,and ionic attributes.On the contrary,the supplementation of Si and Mo enhanced the growth attributes(shoot,panicle,and root length,No.of leaves per plant,shoot and panicle fresh/dry weight,root fresh/dry weight,No.of seeds and seeds fresh weight per plant),physiological traits(relative water content,chlorophyll,and carotenoids content),biochemical characteristics(total soluble sugars,protein and lipid content),metabolic attributes(total phenolic,flavonoids,tannins,lycopene,carotene),hormonal contents(indoleacetic acid(IAA),gibberellic acid(GA),salicylic acid(SA)),enzymatic and non-enzymatic antioxidants(catalase,peroxidase and ascorbic acid),and ionic content(potassium(K),(calcium)Ca,(magnesium)Mg,Si and Mo).Under drought stress,Si and Mo reduced electrolyte leakage,abscisic acid(ABA)content,H_(2)O_(2) production,and sodium uptake.In addition,combined Si and Mo supplementation elevated the expression of the sucrose non-fermenting 1(SNF1)-associated protein kinase 2(SnRK2)(CqSNRK2.10)gene in quinoa under drought stress vs.control,signifying an essential regulatory function for Si and Mo-induced drought stress tolerance.These results imply that the exogenous administration of Si and Mo in combination might be an efficient method to alleviate drought stress on quinoa.
文摘In our modern world, where conserving energy is highly valued, thermal insulation panels play a crucial role in reducing heat transfer between two spaces, surfaces, or materials. They are used to enhance the energy efficiency of various industrial applications by minimizing heat loss and temperature control. These panels function as silent protectors, aiding in reducing energy consumption and making things more sustainable and better for the environment. This is where composite materials come in;they are known for their lightweight nature, high strength-to-weight ratio, and excellent thermal insulation properties and have gained significant attention. Researchers are actively engaged in various studies aimed at enhancing these materials further. This research project focuses on the development of kaolin and glass fiber-reinforced composites for thermally insulating panels, to which natural strengthening materials like corn husk and bamboo fibers are added. The aim is to create cost-effective and efficient composite materials for thermal insulation applications by incorporating these components with a binder consisting of potassium silicate, hydroxide, and distilled water. This project involves conducting compression tests, bending tests, impact tests, thermal conductivity measurements, and microscopic analysis to evaluate the mechanical and thermal properties of the developed composites. The profound impact of these engineered composites on thermal insulation panels stands to revolutionize energy conservation efforts, offering a potent avenue to minimize heat loss and enhance overall energy efficiency across an array of industrial sectors.
文摘The metabolic activity of the fruits continues even after harvest,which results in the loss of bioactive compounds,a decrease in the quality of the fruits,softening and browning,among other negative effects.The use of certain elements such as silicon can improve postharvest quality,since it is involved in the metabolic,physiological and structural activity of plants,moreover can increase the quality of the fruits.In addition,nanotechnology has had a positive impact on crop yield,nutritional value,fruit quality and can improve antioxidant activity.For these reasons,the use of beneficial elements such as silicon in the form of nanoparticles can be a viable option to improve the characteristics of the fruits.In the present study was evaluated the application of potassium silicate(125,250 and 500 mg L^(−1))and SiO_(2) nanoparticles(125,250 and 500 mg L^(−1))during the development of the crop.The results showed that the application of silicon(potassium silicate and silicon nanoparticles)increased the content of total soluble solids(up to 15.6%higher than control),titratable acidity(up to 38.8%higher than control),vitamin C(up to 78.2%higher than control),phenols(up to 22%higher than control),flavonoids(up to 64.6%higher than control),and antioxidant activity in lipophilic compounds(up to 56.2%higher than control).This study suggests that the use of silicon can be a good option to increase the content of bioactive compounds in cucumber fruits when they are applied during the development of the crop.
