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A contrasting analysis of CO_(2) and N_(2) foam flood for enhanced oil recovery and geological storage of CO_(2)

Petroleum Research 2024年第1期9卷 55-60页

作者： Alireza Roozbahani Farshad Soofivan Ali Sagban Hassoon Al-Tameemi Hadi Abdollahi sog.nd saatchi Abdolhamid Ansari Petroleum Engineering Department Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran School of Chemical and Petroleum Engineering Shiraz UniversityShirazIran School of Chemical and Petroleum Engineering Shiraz BranchIslamic Azad UniversityShirazIran Department of Petroleum Engineering Science and Research BranchAzad UniversityTehranIran Department of Chemistry and Chemical Engineering Rasht BranchIslamic Azad UniversityRashtIran Department of Petroleum Engineering Lamerd BranchIslamic Azad UniversityLamerdIran

Foam flooding using CO_(2)has emerged as a promising method for both enhanced oil recovery(EOR)and the storage of CO_(2)in geological *** study conducts a thorough analysis of the behavior of CO_(2)and N_(2)foams in bulk and porous media,utilizing bubble-scale analyses and foam flooding *** study compares the foamability and longevity of CO_(2)and N_(2)foams,with findings indicating that N_(2)foam bubbles tend to be smaller and less varied in size than CO_(2)foam bubbles,leading to increased foam ***,the study compares the half-lives of CO_(2)and N_(2)foams generated through sparging and winding methods,showing that N_(2)foam has half-lives 22 and 10 times greater than CO_(2)foam when produced using the sparging and winding methods,***,CO_(2)foam generated through the sparging method had a lower foaming volume than N_(2)foam due to CO_(2)'s *** the foam flooding experiments,N_(2)foam proved more effective in recovering oil from porous media than CO_(2)foam,thus demonstrating the effectiveness of the foam injection *** results offer valuable insights into the differing performance of N_(2)and CO_(2)foam floods for EOR and CO_(2)geological storage.

关键词： CO_(2) storage Foam flood Enhanced oil recovery N_(2) foam CO_(2) foam

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Influence of Heat Input in Pulsed Current GTAW Process on Microstructure and Corrosion Resistance of Duplex Stainless Steel Welds

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Journal of Iron and Steel Research International 2011年第9期18卷 65-69,78页

作者： M Yousefieh M Shamanian A saatchi Department of Materials Engineering Isfahan University of Technology

The high corrosion resistance of duplex stainless steel （DSS） is due to elements such as Cr, Mo and N, hut also depends on the microstructure. The best general properties are obtained with approximately equal amounts of austenite and ferrite and the absence of third phases such as σ（sigma） and Cr2N. In the present work the effect of heat input variations on the microstructure and corrosion resistance of a DSS UNS S32760 in artificial sea water media were studied. The corrosion resistance in 3.5 % of NaCl solution was evaluated by potentiostatic polarization tests at room temperature. It is found that the presence of sigma phase and Cr2N decreases the corrosion potential. The specimen with heat input of approximately 0.95 kJ/mm have the best corrosion characteristics, which is the result for the lack of deleterious phases such as sigma and Cr2 N and balanced ferrite austenite proportion.

关键词： steel microstructure corrosion heat input pulse current GTAW

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Influnce of Stoichiometry and Molar Ratio of Barium Ferrite Thin Film Synthesized by Sol-gel on Alumina Substrate

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材料热处理学报 2004年第5B期25卷 1313-1315页

作者： AliGhasemi M.R.Shams A.saatchi M.Salehi A.Hosseinpour MaterialsEngineeringDepartment IsfahanuniversityofTechnologyIsfahanIran ElectroceramicResearchcenter ShahinshahrIran MaterialsEngineeringDepartment IsfahanuniversityofTechnologyIsfahanIran／／ElectroceramicResearchcenterShahinshahrIran

Amorphous gels were processed with a varying Fe/Ba ratio of 11/5, 28/2, 10.5/1 in water and Solvent. Iron and barium nitrites with specific molar ratio was solved in water and slovent at 60°C for 3 hours until! a dark brown solution was prepared . The sols were introduced to substrate dropwise and spinning with 2000 rpm in 3 min was applied ; the work was repeated for 10 times and the samples were dried and sintered . The TGA analysis was used to identify the heating rate of the samples; at temperature of 1150°c for one hour the final phase was attained . the thickness , uniformity , morphology and the composition were examined by SEM and XRD. The study shows that the fabrication barium ferrite film of the molar ratio of Fe/Ba = 10.5/1 is much more suitable than other ratios .

关键词：溶胶凝胶钡铁氧体摩尔比率氧化铝基片

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Gap models across micro-to mega-scales of time and space:examples of Tansley’s ecosystem concept

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Forest Ecosystems 2020年第2期7卷 172-189页

作者： H.H.Shugart Adrianna Foster Bin Wang Dan Druckenbrod Jianyong Ma Manuel Lerdau Sassan saatchi Xi Yang Xiaodong Yan University of Virginia 291 McCormick RdCharlottesvilleVA 22904USA NASA Goddard Space Flight Center 8800 Greenbelt RdGreenbeltMD 20771USA Department of Ecology and Evolutionary Biology University of CaliforniaIrvineCAUSA Department of Geological Environmentaland Marine SciencesRider University2083 Lawrenceville RdLawrencevilleNJ 08648USA College of Plant Science and Technology Huazhong Agriculture UniversityWuhanHubeiChina Jet Propulsion Laboratory California Institute of TechnologyPasadenaCA 91109USA Beijing Normal University Jingshi Keji Building B-811NO.12 Xueyuan South RoadHaidian DistrictBeijing 100875China.

Background:Gap models are individual-based models for *** simulate dynamic multispecies assemblages over multiple tree-generations and predict forest responses to altered environmental *** development emphases designation of the significant biological and ecological processes at appropriate time/space ***,they are with consistent with ***’s original definition of"the ecosystem".Results:An example microscale application inspects feedbacks among terrestrial vegetation change,air-quality changes from the vegetation’s release of volatile organic compounds(VOC),and climate change effects on ecosystem production of VOC’*** models can allocate canopy photosynthate to the individual trees whose leaves form the vertical leaf-area *** release depends strongly on leaf physiology by species of these ***-level VOC emissions increase with *** composition change lowers the abundance of VOC-emitting *** interactions among ecosystem functions and biosphere/atmosphere exchanges,community composition responses can outweigh physiological *** contradicts previous studies that emphasize the warming-induced impacts on leaf *** a mesoscale example,the changes in climate(warming)on forests including pest-insect dynamics demonstrates changes on the both the tree and the insect *** is but one of many cases that involve using a gap model to simulate changes in spatial units typical of sampling plots and scaling these to landscape and regional *** this is the typical application scale for gap models,other examples are *** insect/climatechange can be scaled to regional consequences by simulating survey plots across a continental or subcontinental *** inventories at these scales are often conducted using independent survey plots distributed across a *** construction that mimics this sample design avoids the difficulties in modelling spatial inte

关键词： Pollution Climate change Global forest productivity Individual-based models Ecological scale Forest dynamics

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Experimental study on nanoparticles-assisted low-salinity water for enhanced oil recovery in asphaltenic oil reservoirs

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Petroleum 2023年第3期9卷 395-402页

作者： Ali Amraeiniya Soroush Shojaei Amir Ali Mohseni Behzad Haj Abbasi Mahani sog.nd saatchi Arash Barahooie Bahari Seyyed Mohammad Mousavi Sisakht Department of Petroleum Engineering Faculty of EngineeringIslamic Azad UniversityTehranIran Department of Petroleum Engineering Semnan UniversitySemnanIran Department of Chemistry and Chemical Engineering Rasht BranchIslamic Azad UniversityRashtIran Department of Petroleum Engineering Lamerd Higher Education CenterLamerdIran

The purpose of this research is to look into the augmentation of silica nanoparticles(NPs)with low salinity(LowSal)brine for EOR.A series of analyses,including oil/water interfacial tension(IFT)and rock wettability tests were undertaken to determine an optimal dispersion to flood into a porous carbonate core with a defined pore size *** 60℃and 14.5 psi,the maximum drop(i.e.,roughly 12.5 mN/m)in oil/water IFT by 0.3 wt%brine occurred,but when 0.08 wt%silica was added to the brine,the IFT reduced to 14.51 mN/m at 60℃and 14.5 *** wettability analysis revealed a significant reduction in contact angle,from 142°to 72°and 59°,using 0.04 and 0.08 wt%silica in LowSal brine,but the extent reduced by brine alone was *** results of rock pore size characterization were discussed in terms of the accomplishment of operating EOR in the porous medium in the presence of *** addition of 0.08 wt%silica to the injected brine resulted in an additional oil recovery of 16.3%OOIP as well as a significant shift in the endpoints/cross-points of the oil/water relative permeability *** findings of this research might help improve oil recovery from asphaltenic oil reservoirs or,more environmentally friendly,remediate petroleum crude-oil polluted soil.

关键词： Silica nanoparticles Low salinity brine Enhanced oil recovery Carbonate Relative permeability

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Co Complexes as a Corrosion Inhibitor for 316 L Stainless Steel in H₂SO₄ Solution

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Journal of Materials Science and Chemical Engineering 2016年第9期4卷 28-35页

作者： Amin Rabiei Baboukani Ehsan Sharifi Saeid Akhavan Ahmad saatchi Department of Materials Science and Engineering Najafabad Branch Islamic Azad University Najafabad Iran Department of Materials Engineering Daneshpajoohan Institute of Higher Education Isfahan Iran Department of Materials Engineering Isfahan University of Technology Isfahan Iran Department of Materials Science and Engineering University of Wisconsin-Madison Madison USA

The effect of Co complexes with a Schiff base ligand on the electrochemical corrosion behavior of 316 L SS in 0.1 M H2SO4 at 25℃ has been investigated at various inhibitor concentration using electrochemical techniques (impedance spectroscopy (EIS), polarization curves). Corrosion measurements indicate that Co complex act as moderately inhibitors. Results revealed that increasing the concentration of Co complex increases the corresponding IE% values till 100 ppm. Co complex acts as mixed type inhibitors with predominant effect on the anodic dissolution of iron. Adsorption studies showed that the process follows Langmuir adsorption isotherm.

关键词： Corrosion Inhibitors Co Complex 316 L Stainless Steel Polarization EIS

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大白鲨:查尔斯·萨奇和他的收藏帝国

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2011年

作者：田恒 Gret White Shark Charles saatchi and His Em

本书以英国当代收藏家查尔斯·萨奇为案例，通过针对大量生动活泼的历史资料的爬梳，将一位全球闻名、充满争议、颇具传奇色彩的收藏家展现在读者面前。

ISBN: (纸本)9787515500096

关键词：收藏家生平事迹

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The effect of head and facial massage on sleep condition after coronary artery bypass graft surgery

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Traditional Medicine Research 2023年第4期8卷 64-72页

作者： Masoumeh Rajabi Ozudi Masoumeh Bagheri-Nesami Javad Setareh Mahmood Moosazadeh Valiollah Habibi Kiarash saatchi Student Research Committee Mazandaran University of Medical SciencesSari ***Iran Traditional and Complementary Medicine Research Center Addiction InstituteMazandaran University of Medical SciencesSari ***Iran World Federation of Acupuncture-Moxibustion Societies(WFAS) Beijing 100000China Psychiatry and Behavioral Sciences Research Center Addiction InstituteMazandaran University of Medical SciencesSari ***Iran Gastrointestinal Cancer Research Center Non-communicable Diseases InstituteMazandaran University of Medical SciencesSari ***Iran Department of Cardiac Surgery Fatemeh Zahra HospitalMazandaran University of Medical SciencesSari ***Iran General Practitioner Board of Directors of Acupuncture Society of IranTehran ***Iran

Background:Sleep disorders after heart surgery lead to increased heart rate,myocardial oxygen demand,and cause dysrhythmia that worsens heart *** purpose of this study was to determine the effect of head and facial massage on sleep conditions following coronary artery bypass graft *** and methods:A randomized controlled trial was performed on 72 *** were randomly divided into interventional(n=36)and control groups(n=36).On the third to fifth day after the operation,head and the facial massage were done for 15 min in the intervention *** patients in the control group received only routine *** Campbell’s Sleep Questionnaire was completed for four consecutive days for each *** were analyzed in SPSS ***:Mean scores for sleep conditions before the intervention no statistically significant difference seen between the two groups(P>0.05).After the intervention,there was a statistically significant difference between mean scores for sleep conditions of the interventional and control groups(Pnditions between two *** revealed sleep condition total score in the intervention group was more than the control group and the trend of changes over time was statistically significant(Pnd facial massage is an effective nursing intervention in improving the sleep condition of patients after coronary artery bypass *** to the fact that head and face massage is an easy method and brings patient satisfaction,it is recommended to use this method as a suitable supplement for drug therapy and postoperative interventions in these patients.

关键词： coronary artery bypass grafting surgery sleep quality massage

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