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Effects of Corn Stalk-composted Organic Fertilizer on Physiochemical Properties of Tobacco-growing Soil
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作者 刘洋 李爱华 《Agricultural Science & Technology》 CAS 2016年第11期2551-2554,共4页
In order to explore the method of returning corn stalk into field, the effects of returning corn stalk direcfly into soil and applying corn stalk-composted orgar^c fertilizer into soil on the physiochemical properties... In order to explore the method of returning corn stalk into field, the effects of returning corn stalk direcfly into soil and applying corn stalk-composted orgar^c fertilizer into soil on the physiochemical properties of tobacco-growing soil were studied. The results showed that returning corn stalk into soil could reduce soil bulk density and increase soil porosity, so as to improve the water and fertilizer retention capacity of tobacco-growing soil. At the same time, returning corn stalk into soil could also increase the organic matter, available phosphorus and available potassi- um contents in tobacco-growing soil. In the early field growth stage of tobacco, soil alkali-hydrolyzable nitrogen content decreased slightly; but in the middle and later field growth stage, the alkali-hydrolyzable nitrogen content in tobacco-growing soil increased. The treatment effect of corn stalk+urea+fermentation bacteria and corn stalk+urea+BM was better than that of the control (returning corn stalk directly into soil), indicating that the corn stalk-composted organic fertilizer had certain popular- ization value. 展开更多
关键词 Tobacco-growing soil Corn stalk Organic fertilizer physiochemical properties NUTRIENT
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Role of nickel on vanadium poisoned FCC catalyst: A study of physiochemical properties 被引量:6
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作者 U.J.Etim B.Xu +3 位作者 P.Bai Rooh Ullah F.Subhan Z.Yan 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2016年第4期667-676,共10页
Active sites of Fluid catalytic cracking (FCC) catalyst are poisoned during operation in the FCC reactor due to causes including feedstock contaminant metals deposition. This leads to activity, selectivity and increas... Active sites of Fluid catalytic cracking (FCC) catalyst are poisoned during operation in the FCC reactor due to causes including feedstock contaminant metals deposition. This leads to activity, selectivity and increasing coking problems, thereby raising concern to the refiner. This work investigated effect of nickel coexisting with vanadium in the FCC feedstock on the standard FCC catalyst during cracking process, in which destruction of active sites occurs as a result of the metals deposition. Laboratory simulated equilibrium catalysts (E-cats) were studied by XRD, FTIR spectroscopy, N-2 adsorption, solid state MAS-NMR, SEM and H-2-TPR. Results revealed that vanadium, above a certain concentration in the catalyst, under hydrothermal conditions, is highly detrimental to the catalyst's structure and activity. Conversely, nickel hardly affects the catalyst structure, but its co-presence in the catalyst reduces destructive effects of vanadium. The mechanism of nickel inhibition of vanadium poisoning of the catalyst is discussed. (C) 2016 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved. 展开更多
关键词 FCC catalyst Contaminant metals ACTIVITY physiochemical properties Mechanism
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Physiochemical Properties of Resistant Starch and Its Enhancement Approaches in Rice 被引量:4
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作者 Ding Yi Wang Maike +3 位作者 Shen Yi Shu Xiaoli Wu Dianxing Song Wenjian 《Rice science》 SCIE CSCD 2021年第1期31-42,共12页
With changes in food preferences and life styles,more and more attentions have been focused on healthier food.Nowadays,resistant starch(RS)which can resist digestion in the human intestine has been recognized and acce... With changes in food preferences and life styles,more and more attentions have been focused on healthier food.Nowadays,resistant starch(RS)which can resist digestion in the human intestine has been recognized and accepted.High RS diet shows great benefit for the human health,and breeding high RS rice variety is a great target for realizing dietary intervention.To provide guidance for RS improvement in rice,this review summarized the unique physiochemical properties of RS and the possible approaches,i.e.genetic regulation,for enhancing RS content in rice,and proposed the potential ways to obtain rice variety with high RS content. 展开更多
关键词 RICE resistant starch starch modification physiochemical property
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Microscopic evaluation and physiochemical analysis of Dillenia indica leaf 被引量:1
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作者 S Kumar V Kumar Om Prakash 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2011年第5期337-340,共4页
Objective:To study detail microscopic evaluation and physiochemical analysis of Dillenia indica(D.indica)leaf.Methods:Fresh leaf sample and dried power of the leaf were studied macroscopically and microscopically.Prel... Objective:To study detail microscopic evaluation and physiochemical analysis of Dillenia indica(D.indica)leaf.Methods:Fresh leaf sample and dried power of the leaf were studied macroscopically and microscopically.Preliminary phytochemical investigation of plant material was done.Other WHO recommended parameters for standardizations were also performed.Results:The detail microscopy revealed the presence of anomocytic stomata,unicellular trichome,xylem fibres,calcium oxalate crystals,vascular bundles,etc.Leaf constants such as stomatal number,stomatal index,vein-islet number and veinlet termination numbers were also measured.Physiochemical parameters such as ash values,loss on drying,extractive values,percentage of foreign matters,swelling index,etc.were also determined.Preliminary phytochemical screening showed the presence of steroids,terpenoids,glycosides,fatty acids,flavonoids,phenolic compounds and carbohydrates.Conclusions:The microscopic and physiochemical analysis of the D.indica leaf is useful in standardization for quality,purity and sample identification. 展开更多
关键词 Dillenia INDICA Fibre LEAF constant MICROSCOPY physiochemical STOMATA XYLEM
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Effects of native and invasive Prosopis species on topsoil physiochemical properties in an arid riparian forest of Hormozgan Province,Iran 被引量:1
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作者 Maryam MOSLEHI JOUYBARI Asgahr BIJANI +2 位作者 Hossien PARVARESH Ross SHACKLETON Akram AHMADI 《Journal of Arid Land》 SCIE CSCD 2022年第10期1099-1108,共10页
Biological invasions can alter soil properties within the range of their introduced,leading to impacts on ecosystem services,ecosystem functions,and biodiversity.To better understand the impacts of biological invasion... Biological invasions can alter soil properties within the range of their introduced,leading to impacts on ecosystem services,ecosystem functions,and biodiversity.To better understand the impacts of biological invasions on soil,we compared topsoil physiochemical properties at sites with invasive alien tree species(Prosopis juliflora),native tree species(Prosopis cineraria,Acacia tortilis,and Acacia ehrenbergiana),and mixed tree species in Hormozgan Province of Iran in May 2018.In this study,we collected 40 soil samples at a depth of 10 cm under single tree species,including P.juliflora,P.cineraria,A.tortilis,and A.ehrenbergiana,as well as under mixed tree species.The results showed that organic matter,moisture,potassium,calcium,nitrogen,and magnesium in topsoil at sites with A.tortilis and A.ehrenbergiana growing in combination with P.cineraria were higher than that at sites where P.juliflora was present(P<0.05).Sodium at sites with A.tortilis and A.ehrenbergiana growing in combination with P.cineraria and P.juliflora was lower as compared to that at sites with just A.tortilis and A.ehrenbergiana.Electrical conductivity was lower at sites with A.tortilis and A.ehrenbergiana growing in combination with P.cineraria,and it was higher at sites with mixed Acacia and P.juliflora trees.Based on the generally more positive effect of native Acacia and P.cineraria on topsoil physiochemical properties as compared to the P.julifora,afforestation with native tree species is preferable for soil restoration.In addition,due to the negative effects of P.julifora on soil properties,P.julifora spread should be better managed. 展开更多
关键词 Prosopis juliflora Prosopis cineraria tree species INVASION topsoil physiochemical properties Iran
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Evaluation of the Level and Impact of Selected Physiochemical Parameters of Fertilizer Effluent on Obinna River, Adani, Enugu State, Nigeria
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作者 Chizoba Chinelo Agu Matthew Chukwudi Menkiti +1 位作者 Bernard Ibezim Okolo Patrick Chukwudi Nnaji 《Journal of Water Resource and Protection》 2014年第7期722-730,共9页
This work quantitatively evaluates the level and impact of selected physiochemical properties of fertilizer effluent on the Obinna River of Adani, Enugu State, Nigeria. The fertilizer effluent originated from surround... This work quantitatively evaluates the level and impact of selected physiochemical properties of fertilizer effluent on the Obinna River of Adani, Enugu State, Nigeria. The fertilizer effluent originated from surrounding farms and flushed into the Obinna River. Water samples were collected from designated points along the river and analysed for physical, chemical and biological properties using standard methods of APHA. Impact of selected key parameters such as nitrate, phosphate, manganese, dissolved oxygen, biochemical oxygen demand and heavy metals (lead, iron and manganese), was studied. The results of the parameters were compared with the World Health Organisation (WHO) permissible standard for freshwater. Measured concentrations of phosphate (5.00, 7.21, 3.92 mg/L), manganese (1.53, 1.18, 1.47 mg/L) and lead (18.9, 21.7, 39.7 ppm) were found to be above the WHO standard while nitrate (0.04, 0.03, 0.03 mg/L) and iron (0.001, 0.001, 0.1 mg/L) were within the standard. The mean concentrations of heavy metals increased in the following order: Fe (0.034) 1 to downstream S3, with manganese and lead being above WHO standard. The results showed a level of significance for the chi-square distribution and correlation coefficients while the analysis of variance (ANOVA) results was conflicting. It could be inferred that the impact of the selected parameters contributed to the pollution of Obinna River. 展开更多
关键词 physiochemical HEAVY Metals WHO Pollution Obinna RIVER
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Study of Changes in Physiochemical Properties of Soil by the Addition of Cement
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作者 M. Ramzan A. Farooqi 《Journal of Environmental Science and Engineering》 2011年第3期323-332,共10页
The effect of cement on physiochemical properties of three types of soils i.e garden soil, agricultural soil and roadside soil was investigated. The ordinary Portland cement was used. The amount of cement added to soi... The effect of cement on physiochemical properties of three types of soils i.e garden soil, agricultural soil and roadside soil was investigated. The ordinary Portland cement was used. The amount of cement added to soil samples, as dry mass percentage was 20%. The results of analysis showed that the addition of cement is capable of bringing about changes in physiochemical properties of soil. The electrical conductivity and organic matter content in three soils get decreased by the addition of cement. While the pH, bulk density and water holding capacity of soils after the addition of cement gets increased. The soil found most suitable to be treated with cement was roadside soil. It was concluded that cement can be used to change the physiochemical properties of soil and this technique has great utility in improving the quality of problematic soils. 展开更多
关键词 physiochemical properties soil-cement mixture problematic soils erosion.
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Coconut oil research:Past,present,and future directions
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作者 Jiao-Jiao Yin He Huang +6 位作者 Xiao-Ming Jiang Xing-Yang Guo Bao-Hui Pan Pan Gao Wu Zhong Chuan-Rong Hu Dong-Ping He 《Food and Health》 2024年第1期43-52,共10页
Coconut oil contains a rich amount of medium-chain fatty acids,including lauric acid,decanoic acid,and octanoic acid,as well as the corresponding medium-chain triglycerides.It possesses functional attributes such as f... Coconut oil contains a rich amount of medium-chain fatty acids,including lauric acid,decanoic acid,and octanoic acid,as well as the corresponding medium-chain triglycerides.It possesses functional attributes such as facile digestion and absorption,as well as antibacterial and antioxidant properties.The study utilized the Citespace and VOSviewer visual analysis software to examine the quantity of published papers,authors,publishing institutions,research hotspots and frontiers of 3442 effective literatures on the theme of"coconut oil"in the Web of Science(WoS)Core Collection database.The research on coconut oil can be condensed into four primary sections:(1)investigation and utilization of physiochemical characteristics of coconut oil,(2)analysis of nutritional composition and study of the effectiveness of coconut oil,(3)identification of adulteration in coconut oil,(4)evaluation of the impact of coconut oil as a dietary supplement on animal metabolism.Additionally,research focal points have evolved in three distinct phases.Prior to 2008,numerous studies were conducted to investigate the precise fatty acid makeup of coconut oil and its potential for lowering cholesterol levels.From 2009 to 2016,significant emphasis was placed on examining the impact of coconut oil on methane production in ruminants.Between 2018 to 2023,the main focus will be on investigating how nanoparticles can alter the properties of coconut oil.In the future,the anticipated research areas of interest are expected to focus on the rapid detection method of coconut oil,the efficacy of coconut oil and the advancement of coconut resources.The objective of this review is to provide researchers with relevant information about coconut oil,aiming to foster the continued growth of the coconut oil industry. 展开更多
关键词 coconut oil visualized analysis research hotspots physiochemical properties nutrient composition
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Effects of fruit bagging on the physiochemical changes of grapefruit(Citrus paradisi)
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作者 Anze Jiang Lizhen Zheng +5 位作者 Dengliang Wang Chen Kang Jue Wu Peilin Fang Jinping Cao Chongde Sun 《Food Quality and Safety》 SCIE CSCD 2022年第4期651-663,共13页
Fruit bagging is a commonly used cultivation measure to protect citrus fruit from insects and adverse environments.The present study aimed to comprehensively investigate the effects of bagging on the physiochemical ch... Fruit bagging is a commonly used cultivation measure to protect citrus fruit from insects and adverse environments.The present study aimed to comprehensively investigate the effects of bagging on the physiochemical characteristics of grapefruit.The grapefruit were bagged at approximately 110–120 d after anthesis with a one-layer kraft paper bag with black coating inside(SL),a double-layer kraft paper bag with one black paper as the inner layer(DL),and a three-layer kraft paper bag with two black papers as inner layers(TL),respectively.Ultra performance liquid chromatography-high resolution mass spectrometry(UPLC-HRMS)technique was used to identify a total of 19 flavonoids,2 phenylpropanoids,9 coumarins,and 5 limonoids.By using UPLC,50 carotenoids were identified.Gas chromatography–mass spectrometry was used to identify 3 soluble sugars,3 organic acids,and 11 amino acids.In the quantitated components in the peel(albedo and flavedo),the chlorophylls and the carotenoids components(such as luteoxanthin,violaxanthin,9-cis-violaxanthin,xanthophyll,zeaxanthin andβ-carotene)were significantly downregulated by bagging,causing the surface color of bagged fruit to turn yellow earlier but paler than that of the unbagged control,particularly in the three-layer kraft bag treatment.Unlike the peel,the color and the carotenoid content of the juice sacs were less affected.The physiochem-ical compounds other than pigments,including soluble sugars,organic acids,amino acids,flavonoids,coumarins and limonoids,were minimally affected by bagging treatments.Our results indicated that bagging at approximately 110–120 d after anthesis exerted influence mainly on peel color,but less on sugars,acids,amino acids,flavonoids,limonoids and coumarins of grapefruit. 展开更多
关键词 GRAPEFRUIT fruit bagging physiochemical characteristics fruit quality
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Formulation and Antioxidant Activity Evaluation of Theaflavin Effervescent Tablet
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作者 Wenjing QI Xueying WANG +4 位作者 Zhiling HU Qi ZHENG Qiyuan MAO Shiming LI Chang LIU 《Agricultural Biotechnology》 CAS 2023年第2期142-147,共6页
Theaflavins(TFs),as the major polyphenolic components of fermented tea,possess beneficial effects on human health.In this study,the effervescent tablets based on theaflavins were developed.The optimal formulation of T... Theaflavins(TFs),as the major polyphenolic components of fermented tea,possess beneficial effects on human health.In this study,the effervescent tablets based on theaflavins were developed.The optimal formulation of TF effervescent tablets was obtained by response surface methodology with the Box-Behnken design.Then,the physiochemical properties were evaluated,including hardness,friability,effervescent time and pH of the solution.At last,the antioxidant ability of TF effervescent tablets was studied through DPPH and ABTS radical scavenging assay.According to the results,the optimal formulation of the tablets contained TF powder 9.09%,disintegrating agent 43.80%(the weight ratio of citric acid and sodium bicarbonate was 1:1),aspartame 1.86%,PEG-6003%,and mannitol in balance.With the wet granulation method,the TF effervescent tablets displayed suitable hardness,fast disintegration time,good color,pleasant taste and high antioxidant activity.This study demonstrated that the TF effervescent tablets could be a valuable product for the supplement market and contribute to promoting practical application of TFs. 展开更多
关键词 THEAFLAVINS Effervescent tablet FORMULATION physiochemical property Antioxidant ability
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Effect on Optical and Antibacterial Activity of SnO2 and CuO Blended SnO2 Nanoparticles
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作者 Suresh Gopal Baskaran Iruson +2 位作者 Sathyaseelan Balaraman Senthilnathan Krishnmoorthy Manikandan Elayaperumal 《Soft Nanoscience Letters》 CAS 2023年第2期1-12,共12页
Nanocrystalline SnO<sub>2</sub> and CuO doped with SnO<sub>2</sub> were prepared by the co-precipitation method and characterized for different physiochemical properties and microbiological act... Nanocrystalline SnO<sub>2</sub> and CuO doped with SnO<sub>2</sub> were prepared by the co-precipitation method and characterized for different physiochemical properties and microbiological activity. The composition and morphological formation were characterized by XRD, HRTEM, Raman, FTIR, and UV-vis spectroscopy. The Powder X-ray analysis reveals that Sn4+ ions have substituted the Cu<sup>2+</sup> ions without changing the monoclinic structure of SnO<sub>2</sub> but the average particle size of the SnO<sub>2</sub> and CuO doped SnO<sub>2</sub> samples from 11 and 5 nm respectively. However, it exhibits an inhibiting strong bacterial growth against tested bacterial strains. 展开更多
关键词 SnO2 CuO Doped SnO2 physiochemical Properties Microbiological Activity
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Systematic Biological Upgrade of a Urea Fertilizer Effluent Treatment Plant Using GPS
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作者 Isyaku Ahmad Joseph T. Akintola +3 位作者 Regina J. Patinvoh Wilson F. Ekpotu Martins C. Obialor Philemon Chukwuebuka Udom 《Open Journal of Applied Sciences》 2023年第8期1457-1477,共21页
The use of modeling and simulation has developed into a critical tool for the sustainable management of wastewater, especially when it comes to replicating the complex biochemical procedures required for fertilizer ef... The use of modeling and simulation has developed into a critical tool for the sustainable management of wastewater, especially when it comes to replicating the complex biochemical procedures required for fertilizer effluent treatment, which calls for a significant amount of wastewater-related data. The biological improvement of a urea fertilizer effluent via GPS* simulation was carried out in this work using a methodical process. Using established analytical techniques, temperature, total suspended solids (TSS), biochemical oxygen demand (BOD), total phosphorus (T/), chemical oxygen demand (COD), total nitrogen (TN), total nitrate (NO<sub>3</sub>), electric conductivity (EC), turbidity, residual chlorine, urea, NH<sub>3</sub>, and heavy metals (Cu, Cd, Cr, Pb, Ni, and Fe) were assessed. The research revealed that the measured values from the fertilizer factory outfall effluent had high concentrations of all the physicochemical water quality indicators, with the exception of TSS, PO<sub>4</sub><sup>-</sup>, SO<sub>4</sub><sup>-</sup>, and NO<sub>3</sub><sup>-</sup>. These concentrations are higher compared to the authorized limits or suggested values by the Federal Environmental Protection Agency (FEPA). To improve the therapy biologically, however, a modeling and simulation program (GPS-X, version 8.0) was used with the physicochemical information gathered from the studied sample. The results of the treated water simulation showed that the concentrations of BOD<sub>5</sub> and COD had been significantly reduced by 35% and 44%, respectively. Additionally, it was discovered that total phosphorus (TP), nitrate (N), and total nitrogen (TN) were all within the permitted FEPA limit. The results revealed good treatment performance of the wastewater with increasing concentration of acetic acid and sodium hydroxide. Hence, the results of this research work identify the need for proper treatment of fertilizer industry effluents prior to their release into the environment. 展开更多
关键词 Fertilizer Wastewater Effluent Discharge Basin Outfall Basin physiochemical Analysis GPS* Modelling & Simulation
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Post Impact of Hydrocarbon Spillage on Physicochemical Parameters and Heavy Metals in the Santa Barbara River, Nembe, Bayelsa State
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作者 Amararu Onyema Isukul Godwin Jeremiah Udom Richmond Uwanemesor Ideozu 《International Journal of Geosciences》 2023年第10期935-954,共20页
The work of the paper focused on the post impact of oil spill contamination of groundwater in Bassambiri Nembe Bayelsa State. Groundwater samples were sampled from hand dug wells from eight stations including the cont... The work of the paper focused on the post impact of oil spill contamination of groundwater in Bassambiri Nembe Bayelsa State. Groundwater samples were sampled from hand dug wells from eight stations including the control point for physico-chemical investigation using sterilized glass bottles. Sampling was carried out upstream and downstream on the Santa Barbara River across the stations and the results are as follows surface water pH ranged 6.90 - 7.50, electrical conductivity 19739.41 μS/cm - 28920.64 μS/cm and Chloride 6019.63 - 9274.82 mg/l. The Total Dissolved Solids (TDS) varied from 10472.72 mg/l - 16538.19 mg/l dissolved oxygen (DO) 6.21 mg/l - 7.371 mg/l while the mean biochemical oxygen demand (BOD) 0.09 ± 0.52 mg/l - 2.4 ± 0.81 mg/l, temperature 28.04℃ - 31.79℃ while total alkalinity is 43.95 mg/L -73.87 mg/L. Calcium ion ranged 375.68 mg/l - 536.72 mg/l, Magnesium ion 88.35 - 243.24 mg/l and Potassium ion 41.27 - 121.17 mg/l. The results of the study showed that the pH, salinity, alkalinity, total suspended solids (TSS), Chlorides, Phosphates, and Nitrates are within permissible limits of the WHO, however the electrical conductivity, TDS, turbidity, DO, BOD, and hardness exceeded WHO permissible limits for drinking water. Total Petroleum Hydrocarbon (TPH) and Heavy metals had low concentrations in the Santa Barbara River across the study area suggesting that surface water is not polluted. However, the surfactants used initially to contain the oil pollution were effective based on this research. 展开更多
关键词 Post Impact Oil Spillage physiochemical Parameters Santa Barbara
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Evaluation of soil nutrient status in poplar forest soil by soil nutrient systematic approach 被引量:5
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作者 余常兵 陈防 +1 位作者 罗治建 陈卫文 《Journal of Forestry Research》 SCIE CAS CSCD 2004年第4期298-300,共3页
A study was conducted to evaluate the soil nutrient status of poplar plantation by Soil Nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province, China. Soil physiochemical properties were analyzed in lab... A study was conducted to evaluate the soil nutrient status of poplar plantation by Soil Nutrient Systematic Approach (SNSA) in Jianghan Plain, Hubei Province, China. Soil physiochemical properties were analyzed in laboratory through collection soil samples of study site. Ten treatments of application different fertilizers were designed such as CK, optimum treatment (N, P, K, Zn), N(P, K, Zn), P(N, K, Zn), K(N, P, Zn), +Mg(N, P, K, Zn, Mg), Zn (N,P,K), +2P(N, 2P, K, Zn), +2K(N, P, 2K, Zn), and 2N+2P+2K(2N, 2P, 2K, Zn) for field experiment to test the effect on tree height, diameter (DBH) growth, and dry weight of poplar. The results showed that there was no significant difference in tree heights between treatments with different fertilizers, diameter growth of poplar trees in treatments of lack of N and Zn was significantly slower than that of trees in optimum treatment, and dry weight of poplar dropped significantly for treatment of CK as well as treatments without application N and Zn. It is concluded that N and Zn were main limiting factor for poplar growth. Results from laboratory analysis and field experiment were uniform per-fectly, which proved that SNSA was reliable in evaluating soil nutrient status of poplar plantation. 展开更多
关键词 Soil nutrient status Soil Nutrient Systematic Approach Poplar plantation Limiting factor Evaluation method Soil physiochemical properties
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Influence of Different Drying Temperatures on Quality of Balsam Pear Slices
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作者 谷俊华 黄斐 《Agricultural Science & Technology》 CAS 2017年第8期1513-1516,1535,共5页
[Objective] The aim was to investigate the effects of different drying temperatures on the physiochemical properties and antioxidant activity of balsam pear slices. [Method] Balsam pear slices were dried at different ... [Objective] The aim was to investigate the effects of different drying temperatures on the physiochemical properties and antioxidant activity of balsam pear slices. [Method] Balsam pear slices were dried at different hot air temperatures, 40, 50, 60, 70 and 80 ℃. [Result] The polyphenols content was highest (2.83 mg/g) in the balsam pear slices dried at 50 ℃, and the flavonoids content was highest (2.584 mg/g) in those dried at 60 ℃. Different drying temperatures had a great impact on the antioxidant capacity of polyphenols in balsam pear. The balsam pear slices dried at 50 ℃ showed the strongest capacity for scavenging DPPH free radicals with IC50 of 0.015 mg/ml, and those dried at 80 ℃ showed the strongest capacity for removing ABTS free radicals with IC50 of 0.0689 mg/ml. [Conclusion] The hot air temperature of 50 ℃ had the least impact on the quality of balsam pear slices. 展开更多
关键词 Balsam pear slice Hot air drying physiochemical properties Antioxidant activity
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The Role of Biochar to Enhance Anaerobic Digestion: A Review 被引量:3
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作者 Shuai Tang Zixin Wang +2 位作者 Zhidan Liu Yuanhui Zhang Buchun Si 《Journal of Renewable Materials》 SCIE EI 2020年第9期1033-1052,共20页
Biochar,one of the products of thermochemical conversion of biomass,possesses specific physiochemical properties such as conductivity,pore adsorption,surface functional groups,and cation exchange capacity.Anaerobic di... Biochar,one of the products of thermochemical conversion of biomass,possesses specific physiochemical properties such as conductivity,pore adsorption,surface functional groups,and cation exchange capacity.Anaerobic digestion(AD)as a classical bio-wastes conversion technology,suffers from inhibitions,process instability,and methanogenic inefficiency which limit its efficiency.With the advantages of pH buffering,functional microbes enrichment,inhibitors alleviating,and direct interspecies electron transfer(DIET)accelerating,biochar suggests a promising application as additives for AD.Herein,this paper reviewed the noting physicochemical properties of biochar,and discussed its roles and related mechanisms in AD.Further,this paper highlighted the advantages and drawbacks,and pointed out the corresponding challenges and prospects for future research and application of biochar amending AD. 展开更多
关键词 BIOCHAR physiochemical properties anaerobic digestion methane production MECHANISMS
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Enhancing Drought Tolerance in Wheat through Improving Morpho- Physiological and Antioxidants Activities of Plants by the Supplementation of Foliar Silicon 被引量:2
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作者 Zahoor Ahmad Ejaz Ahmad Waraich +5 位作者 Celaleddin Barutçular Akbar Hossain Murat Erman Fatih CIG Hany Gharib Ayman EL Sabagh 《Phyton-International Journal of Experimental Botany》 SCIE 2020年第3期529-539,共11页
The main objective of the research is to assess the role of foliar application of silicon(Si)for enhancing the survival ability of wheat under drought stress through improving its morphology,physicochemical and antiox... The main objective of the research is to assess the role of foliar application of silicon(Si)for enhancing the survival ability of wheat under drought stress through improving its morphology,physicochemical and antioxidants activities.Treatments were five doses of Si at the rate of 2,4,6 and 8 mM and a control.After completion of seeds germination,pots were divided into four distinct groups at various field capacity(FC)levels,such as 100%FC(well-irrigated condition),75%FC(slight water deficit),50%FC(modest water deficit)and 25%FC(severe water deficit stress condition).Foliar application of Si at the rate of 2,4,6 and 8 mM and a control were given after 30 days of sowing at the tillering stage of wheat.Findings of the present investigation indicated that increasing the level of water deficit stress reduced the morphological parameters(such as root and shoot fresh and dry-biomass weight)and physico-biochemical events((such as chlorophyll contents by estimating SPAD value),total free amino acid(TFAA),total soluble sugar(TSS),total soluble protein(TSP),total proline(TP),CAT(catalase),POD(peroxidase),SOD(superoxide dismutase)and APX(ascorbate peroxidase))of wheat;while foliar application of Si at 6 mM at tillering stage enhanced the drought tolerance in wheat by increasing morphology and physiochemical characters under all levels of drought stress.Similarly,antioxidants activities in wheat also enhanced by the application of Si at 6 mM under normal as well as all drought stress levels.There-fore,it may be concluded that foliar application of Si at 6 mM at the tillering stage of wheat is an important indication for increasing the drought tolerance by improving the morphology,physico-biochemical and antioxidants activities in plants under deficit water(drought)conditions. 展开更多
关键词 Foliar silicon drought tolerance morphology physiochemical ANTIOXIDANTS WHEAT
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Long-Term No-Tillage Direct Seeding Mode for Water-Saving and Drought-Resistance Rice Production in Rice-Rapeseed Rotation System 被引量:1
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作者 DU Xing-bin CHEN Chen +4 位作者 LUO Li-jun XIA Long-ping LIU Kang CHEN Yin-hua YU Xin-qiao 《Rice science》 SCIE 2014年第4期210-216,共7页
To study the effects of long-term no-tillage direct seeding mode on rice yield and the soil physiochemical property in a rice-rapeseed rotation system, a comparative experiment with a water-saving and drought-resistan... To study the effects of long-term no-tillage direct seeding mode on rice yield and the soil physiochemical property in a rice-rapeseed rotation system, a comparative experiment with a water-saving and drought-resistance rice (WDR) variety and a double low rapeseed variety as materials was conducted under no-tillage direct seeding (NTDS) mode and conventional tillage direct seeding (CTDS) mode for four years, using the CTDS mode as the control. Compared with the CTDS mode, the actual rice yield of WDR decreased by 8.10% at the first year, whereas the plant height, spikelet number per panicle, spikelet fertility, 1000-grain weight, grain yield, actual yield, and harvest index increased with no-tillage years, which led to the actual yield increase by 6.49% at the fourth year. Correlation analysis showed that the panicle length was significantly related to the actual yield of WDR. Compared with the CTDS mode in terms of the soil properties, the pH value of the NTDS mode decreased every year, whereas the contents of soil organic matter and total N of the NTDS mode increased. In the 0-5 cm layer of the NTDS mode, the soil bulk decreased, whereas the contents of soil organic matter, total N, and available N increased. In the 5-20 cm layer of the NTDS mode, the available N and K decreased, whereas the soil bulk, contents of soil organic matter, and total N increased. In summary, the NTDS mode increased the rice yield, and could improve the paddy soil fertility of the top layer. 展开更多
关键词 no-tillage direct seeding rice yield soil physiochemical property water-saving and drought-resistance rice rotation system
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Delivery of theophylline as dry powder for inhalation 被引量:1
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作者 Bing Zhu Mehra Haghi +4 位作者 Anphy Nguyen Mary Goud Stewart Yeung Paul MYoung Daniela Traini 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2015年第6期520-527,共8页
Theophylline(TP)is a very well established orally or intravenously delivered antiasthma drug with many beneficial effects.This study aims to improve asthma treatment by creating a dry powder inhalable(DPI)formulation ... Theophylline(TP)is a very well established orally or intravenously delivered antiasthma drug with many beneficial effects.This study aims to improve asthma treatment by creating a dry powder inhalable(DPI)formulation of TP to be delivered directly to the lung,avoiding the side effects associated with conventional oral delivery.The DPI TP formulation was investigated for its physico-chemical characteristics using scanning electron microscopy,laser diffraction,thermal analysis and dynamic vapour sorption.Furthermore,aerosol performance was assessed using the Multi Stage Liquid Impinger(MSLI).In addition,a Calu-3 cell transport assay was conducted in vitro using a modified ACI to study the impact of the DPI formulation on lung epithelial cells.Results showed DPI TP to be physico-chemically stable and of an aerodynamic size suitable for lung delivery.The aerosolisation performance analysis showed the TP DPI formulation to have a fine particle fraction of 29.70±2.59%(P<0.05)for the TP formulation containing 1.0%(w/w)sodium stearate,the most efficient for aerosolisation.Regarding the deposition of TP DPI on Calu-3 cells using the modified ACI,results demonstrated that 56.14±7.62%of the total TP deposited(13.07±1.69μg)was transported across the Calu-3 monolayer over 180 min following deposition,while 37.05±12.62%of the deposited TP was retained in the cells.This could be due to the presence of sodium stearate in the current formulation that increased its lipophilicity.A DPI formulation of TP was developed that was shown to be suitable for inhalation. 展开更多
关键词 THEOPHYLLINE Powder formulation Aerosol performance physiochemical characteristics
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Modification on Synthesis of Mixed Ligand Chelates by Using Di- and Trivalent Transition Metal Ions with Schiff Base as Primary Ligand 被引量:1
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作者 Abdussalam Ali Maihub Faten Suliman Alassbaly +1 位作者 Marei Mailoud El-Ajaily Abdunnaser Mohamed Etorki 《Green and Sustainable Chemistry》 2014年第3期103-110,共8页
New mixed ligand chelates synthesized from di-and trivalent metal ions (Cr, Co, Ni, and Cu ions) and Schiff base (L1) resulted from the condensation of 4-dimethylaminobenzaldehyde with 2-aminophenol as primary ligand,... New mixed ligand chelates synthesized from di-and trivalent metal ions (Cr, Co, Ni, and Cu ions) and Schiff base (L1) resulted from the condensation of 4-dimethylaminobenzaldehyde with 2-aminophenol as primary ligand, whereas 2-nitroaniline (L2) represents the secondary ligand in a molar ratio of M:L1:L2 [1:1:1]. The synthesized Schiff base and chelates have been characterized by using several tools, such as, elemental analysis, molar conductivity, magnetic moment measurements, infrared and electronic spectra. The mass spectra of the ligands and Ni(II) chelate were used to justify the process of modification, as well as, the electron paramagnetic resonance spectrum which was carried out for Cu(II) chelate all in order to elucidate the chemical and geometrical structure of the chelates. On the basis of the obtained data, the geometry of the products was proposed for all the chelates. 展开更多
关键词 SCHIFF Base 2-Nitroaniline CHELATES 4-Dimethylaminobenzaaldehyde 2-AMINOPHENOL physiochemical Techniques
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