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223篇 您的检索式:作者名="Khorram"
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1Biochar: A review of its impact on pesticide behavior in soil environments and its potential applications显示文摘Biochar is produced from the pyrolysis of carbon-rich plant- and animal-residues under low oxygen and high temperature conditions and has been increasingly used for its positive role in soil compartmentalization through activities such as carbon sequestration and improving soil quality. Biochar is also considered a unique adsorbent due to its high specific surface area and highly carbonaceous nature. Therefore, soil amendments with small amounts of biochar could result in higher adsorption and, consequently, decrease the bioavailability of contaminants to microbial communities, plants, earthworms, and other organisms in the soil. However, the mechanisms affecting the environmental fate and behavior of organic contaminants, especially pesticides in biochar-amended soil, are not well understood. The purpose of this work is to review the role of biochar in primary processes, such as adsorption–desorption and leaching of pesticides. Biochar has demonstrable effects on the fate and effects of pesticides and has been shown to affect the degradation and bioavailability of pesticides for living organisms. Moreover, some key aspects of agricultural and environmental applications of biochar are highlighted.Mahdi Safaei Khorram Qian Zhang Dunli Lin Yuan Zheng Hua Fang Yunlong Yu 2016Journal of Environmental Sciences2016,28,6:20
2Effects of aging process on adsorption–desorption and bioavailability of fomesafen in an agricultural soil amended with rice hull biochar显示文摘Biochar has been introduced as an acceptable soil amendment due to its environmental benefits such as sequestering soil contaminants. However, the aging process in biochar amended soil probably decreases the adsorption capacity of biochar through changing its physico-chemical properties. Adsorption, leaching and bioavailability of fomesafen to corn in a Chinese soil amended by rice hull biochar after 0, 30, 90 and 180 days were investigated.Results showed that the addition of 0.5%–2% fresh biochar significantly increases the adsorption of fomesafen 4–26 times compare to unamended soil due to higher SSA of biochar. Biochar amendment also decreases fomesafen concentration in soil pore water by5%–23% resulting lower risk of the herbicide for cultivated plants. However, the aging process decreased the adsorption capacity of biochar since the adsorption coefficient values which was 1.9–12.4 in 0.5%–2% fresh biochar amended soil, declined to 1.36–4.16, 1.13–2.78 and 0.95–2.31 in 1, 3 and 6-month aged treatments, respectively. Consequently, higher desorption, leaching and bioavailable fraction of fomesafen belonged to 6-month aged treatment. Nevertheless, rice hull biochar was effective for sequestering fomesafen as the adsorption capacity of biochar amended soil after 6 months of aging was still 2.5–5 times higher compared to that of unamended soil.Mahdi Safaei Khorram Dunli Lin Qian Zhang Yuan Zheng Hua Fang Yunlong Yu 2017Journal of Environmental Sciences2017,29,6:5
3Anti-irritable Bowel Syndrome Syrup Improves Constipation-Predominant Irritable Bowel Syndrome:A Randomized,Placebo-Controlled Trial显示文摘Objective To evaluate the efficacy and safety of administration of the formulated Persian herbal syrup on improving the symptoms of patients with constipation-predominant irritable bowel syndrome(IBS-C).Methods This study was conducted in 70 patients with IBS-C,who were recruited from 3 medical centers in Mashhad,Iran,from November 2017 to August 2018.Seventy patients were randomly assigned to 2 groups including treatment and placebo groups by block randomization,35 cases in each group.Patients in the treatment group received 15 mL of anti-IBS syrup,thrice daily for 6 weeks and followed up for 4 weeks.Placebo syrup was also prepared through similar instruction,BP syrup without plant extract was used.Primary outcome induding IBS Symptom Severity Scale(IBS-SSS)questionnaire and secondary outcomes in terms of Hospital Anxiety and Depression(HADS)questionnaires,the Bristol Stool Form Scale(BSFS)were completed and evaluated at weeks 6 and 10,respectively.Safety indices were collected at the end of the treatment and Common Terminology Criteria for Adverse Events v4.0(CTCAE)was used to evaluate the adverse events.Results The response to treatment was 84.4%(27/32)in the treatment group and 46.4%(13/28)in the placebo group,respectively(P=0.002).Compared with pre-treatment,a significant decrease was found on the IBS-SSS and BSFS scores after 6-week intervention in both groups(P<0.001).Moreover,IBS-SSS and BSFS scores in the treatment group were lower than the placebo group after the intervention(P=0.041).There was no significant difference in the anxiety and depression scores after treatment in both groups(P>0.05).Side effects reported in the treatment group included 2 cases of headache during the first week of the onset of the treatment,1 case of drowsiness,1 case of increase in menstrual bleeding,which did not result in discontinuation of the treatment.In the placebo group,1 case of exacerbation of the disease was reported.Conclusions Anti-IBS syrup significantly reduced the severity of IBS symptoms compared to placebo.However,there was a need for further investigation regarding the anxiety and depression scores.(Registration No.IRCT2017061034446N1).Hamide Khorram Pazhouh Seyyd Musa al-Reza Hosseini Ali Taghipour Shokouhsadat Hamedi Mohammadreza Noras 2020Chinese Journal of Integrative Medicine2020,26,10:4
4Antibiotics in two municipal sewage treatment plants in Sri Lanka:Occurrence,consumption and removal efficiency显示文摘Most of the monitoring data on the occurrence of antibiotics in sewage treatment plants(STPs)have been reported from Europe,North America and some countries in Northeast Asia,while very limited data can be found in Southeast Asian countries.As a pioneering research in Sri Lanka,we collected 24 h composite wastewater samples at the influent and effluent of two municipal STPs for consecutive 7 days to investigate occurrence,consumption and removal efficiency of seventeen antibiotics.The STP was located in Colombo and Hikkaduwa,respectively,representing two kinds of communities(i.e.local and tourists)in Sri Lanka.The targeted antibiotics were extracted by solid-phase extraction method and detected on an Agilent HPLCMSMS(1290/6470QQQ).Results illustrated that the majority of the antibiotics can be always detected from both STPs,except for chlorotetracycine(CTC),doxycycline(DOX)and florfenicol(FF).Fluoroquinolones(FQs)were detected at highest concentrations with ciprofloxacin(CIP)being the dominant compound.Concentrations of CIP in the influent samples were in the range of 433 e6010 ng/L.The consumption of antibiotics was estimated on the basis of influent mass load and catchment population data.We found difference in consumption patterns between the two served areas.Compared to local people in Colombo,tourists in Hikkaduwa appeared to take more antibiotics during the study period with the estimated daily dose of 0.25 g per 1000 persons.Moreover,macrolides accounted for a larger portion than FQs in Hikkaduwa,with azithromycin(AZM)being the most prevalent antibacterial agent.After comparison with an official report by Medical Supplies Division of Sri Lanka,we conjected that AZM was not commonly used among local people and it was mainly introduced by foreign arrivals.As for the removal efficiency,the activated sludge system of Colombo exhibited better elimination and more stable performance than the constructed wetland process of Hikkaduwa.Dilanka N.D.Samaraweera Xin Liu Guangcai Zhong Tilak Priyadarshana Riffat Naseem Malik Gan Zhang Mahdi Safaei Khorram Zewen Zhu Xianzhi Peng 2019Emerging Contaminants2019,5,1:3
5Electro-spray of high viscous liquids for producing mono-sized spherical alginate beads显示文摘Alginate beads, often used for controlled release of enzymes and drugs, are usually produced by spraying sodium alginate liquid into a gelling agent using mechanical vibration nozzle or air jet. In this work an alternative method of electro-spray was employed to form droplets with desired size from a highly viscous sodium alginate solution using constant DC voltage. The droplets were then cured in a calcium chloride solution. The main objective was to produce mono-sized beads from such a highly viscous and non-Newtonian liquid (1000-5000 mPa s). The effects of nozzle diameter, flow rate and concentration of liquid on the size of the beads were investigated. Among the parameters studied, voltage had a pronounced effect on the size of beads as compared to flow rate, nozzle diameter and concentration of alginate liquid. The size of beads was reduced to a minimum value with increasing the voltage in the range of 0-10 kV. At the early stages of voltage increase (i.e. up to about 4 kV), the rate of size reduction was relatively low, while the dripping mode dominated. However, in the middle part of the range of applied voltage, where the rate of size reduction was high (i.e. about 4-7 kV), an unstable transition occurred between dripping and jetting. At the end part of the range (i.e. 7-10 kV) jet mode of spray was observed. Increasing the height of fall of the droplets was found to improve the sphericity of the beads, because of the increased time of flight for the droplets. This was especially identifiable at higher concentrations of the alginate liquid (i.e. 3 w/v%).Hamid Moghadam Mohsen Samimi Abdolreza Samimi Mohamad Khorram 2008Particuology2008,6,4:3
6Modeling and optimization of the parameters affecting the in-situ microencapsulation process for producing epoxy-based self-healing anti-corrosion coatings显示文摘Ali Ebrahiminiya Mohammad Khorram Shadi Hassanajili Mehdi Javidi 2018Particuology2018,16,1:2
7Mechanistic, Energetic and Structural Aspects of the Adsorption of Carmustine on the Functionalized Carbon Nanotubes显示文摘Using density functional theory, noncovalent interactions and two mechanisms of covalent functionalization of drug carmustine with functionalized carbon nanotube(CNT) have been investigated. Quantum molecular descriptors of noncovalent configurations were studied. It was specified that binding of drug carmustine with functionalized CNT is thermodynamically suitable. NTCOOH and NTCOCl can bond to the NH group of carmustine through OH(COOH mechanism) and Cl(COCl mechanism) groups, respectively. The activation energies, activation enthalpies and activation Gibbs free energies of two pathways were calculated and compared with each other. The activation parameters related to COOH mechanism are higher than those related to COCl mechanism, and therefore COCl mechanism is suitable for covalent functionalization. COOH functionalized CNT(NTCOOH) has more binding energy than COCl functionalized CNT(NTCOCl) and can act as a favorable system for carmustine drug delivery within biological and chemical systems(noncovalent). These results could be generalized to other similar drugs.KHORRAM Rabeeh MORSALI Ali RAISSI Heidar HAKIMI Mohammad BEYRAMABADI S. Ali 2017Chinese Journal of Structural Chemistry2017,36,10:2
8Bedload Sediment Rate Prediction for the Sand Transport Along Coastal Waters in Ocean Management Strategy显示文摘Interactions among different landforms and varied complicated physical processes cause sediment transport in coastal regions being the interest of ocean management planning studies. In coastal zones, the derivation of the bedload sediment transport rate and the flow velocity distribution is done by entropy theory which assumes the modified spatiotemporal disorder power index(MSTDPI) and the time-averaged flow velocity(as a random variable). Studying the deposition trend of bedload sediment transport rate for the sand particle(BLSTRS) and estimating the coastal erosion rate as a case study, the Makran coast is selected. To analyze the spatiotemporal patterns, the disorder power index(entropy-power) method is applied in this study where the monthly data of six Makran coastal sections from January 1970 to December 2015 are used. The studied data are mainly focused on the correlation of the flow rate of the sediment from the Makran River, and the spatiotemporal patterns of BLSTRS.Despite their meaningful spatiotemporal variability, it is not very easy to explain how the abovementioned variables perform together;the entropy-power index allows a better understanding of the combined performance of such parameters as the flow velocity and sediment transport by showing clearer signals for the assessment of coastal engineering issues at very large(coastal) scales.Saeed KHORRAM 2020China Ocean Engineering2020,34,6:2
9A feature-based image registration algorithm using improved chain-code representation combined with invariant moments 显示文摘Dai X Khorram S 1999IEEE Transactions on Geoseienee and Remote Sensing(S0196-2892)1999,37,5:1
10A Feature-Based Image Registration Algorithm Using Improved Chain-Code Representation Combined with Invariant Moments显示文摘Xiaolong Dai Khorram S 1999IEEE Trans on Geosciand Remote Sensing1999,9,23:1
11A new three-parameter ageing distribution 显示文摘Hemmati F Khorram E Rezakhah S 2011Journal of Statistical Planning and Inference2011,141,:1
12Simultaneous induction of neuropeptide Y and gona- dotropin-releasing hormone release in the rabbit hypo- thalamus显示文摘PAU K Y F KHORRAM O KAYNARD A H 1989Neuroendocrinology1989,49,2:1
13Two improved harmony search algo- rithms for solving engineering optimization problems 显示文摘Jaberipour M Khorram E 2010Com- munications in Nonlinear Science and Numerical Simulation2010,15,11:1
14The effects of image misregistration on the accuracy of remotely sensed change detection显示文摘Dai X Khorram S 1998IEEE Trans Geosci Remote Sensing1998,36,:1
15A Feature-Based Image Registration Algorithm Using Improved Chain-Code Representation Combined with Invariant Moments显示文摘Dai X L Khorram S 1999IEEE Trans of Geoscience and Remote Sensing1999,37,5:1
16A feature-based image registration algorithm using improved chain-code representation combined with invariant moments显示文摘Dai X Khorram S 1999IEEE Transactions on Geo-science and Remote Sensing1999,37,5:1
17Remote sensing of salinity in the San Francisco Bay Delta显示文摘Khorram S 1982Remote Sensing of Environment1982,12,:1
18A chance constrained integer programming model for open pit long- termproduction planning 显示文摘GHOLAMNEJAD J OSANLOO M KHORRAM E 2008THE Transactions A: Basics2008,21,4:1
19A Feature-based Image Registration Algorithm Using Improved Chain-code Representation Combined with Invariant Moments显示文摘Dai X Khorram S 1999IEEE Trans on Geoscience and Remote Sensing1999,37,5:1
20Harmony search algorithm for solving combined heat and power economic dispatch problems显示文摘Khorram E Jaberipour N 2011Ener- gy Conversion and Management2011,152,:1
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