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Cor.osion and Scaling Thr.at in Upstr.am Oil Oper.tion

Wor.d Jour.al of Engineer.ng and Technology 2024年第2期12卷 426-437页

作者： Nasir.Ullattumpoyil Talal M. Al-Ghamdi Nasser.r. Al-Hajr. Souther. Ar.a Technical Suppor. Depar.ment Saudi Aramco Dhahran KSA

Cor.osiveness or.scaling is an inher.nt thr.at to oil oper.tions. The pr.mar. cause for.this thr.at is the pr.sence of water.having complex geochemical matr.x. Unanticipated water.pr.duction, par.icular.y if it contains unwanted impur.ties, can significantly impact hydr.car.on pr.duction. The cur.ent paper.discusses the degr.e of thr.at posed to oil oper.tion facilities based on the water.char.cter.stics. Methodology involved the collection and analysis of water.samples fr.m major.sour.es in oil industr. such as gr.undwater. wellheads and seawater. The par.meter. tested include geochemical, micr.biological and pollutants. The lab data was used to develop scaling and cor.osion pr.diction indices such as Langelier.Satur.tion Index (LSI), r.znar.Stability Index (r.I) and Puckor.us Scaling Index (PSI). The study indicated var.ing water.chemistr. for.differ.nt sour.es. Mixing of those water. may lead to ionic satur.tion and scaling in differ.nt facilities. Pr.sence of the Sr. and GAB in some water.sour.es also posed thr.at to water.system by for.ing fouling and cor.osion. Seawater.used for.offshor. oilfields water.injection to maintain r.ser.oir.pr.ssur. and impr.ve oil r.cover. showed scaling tendency, wher.as under.differ.nt r.ser.oir.pr.ssur., it can cause cor.osion. Some of the samples also had cor.osion r.siduals such as ir.n, which indicated active cor.osion. Cur.ent study showed higher.alkalinity with high sulfate for.one gr.undwater.sample with pr.sence of active cor.osion r.siduals such as dissolved ir.n and manganese. The study showed positive value for.LSI which indicated super.atur.tion of the water.samples with r.spect to calcium car.onate (CaCO3) and scale for.ing. Similar.y, for.r.I and PSI, the value was below six which confir.ed the scaling potential for.all the samples. Even though the index value was pointing towar.s scaling potential, the geochemistr., micr.biology and pr.sence of other.impur.ties indicated cor.osion thr.at to the oil and g

关键词： For.ation Water Petr.leum r.ser.oir. Gr.undwater Satur.tion Indices Cor.osiveness

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Landfor.s Evolution of Wadi Qudaid Ar.a, West Centr.l Ar.bian Shield, Saudi Ar.bia: An Example of the r.le of the Geological Factor. in the Ur.an Extensions

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Open Jour.al of Geology 2020年第6期10卷 612-640页

作者： Ali A. Mesaed Mohammed A. M. Alghamdi Abdullah r. Sonbul Geo-Explor.tion Techniques Depar.ment Faculty of Earth Sciences King Abdulaziz University Jeddah KSA Geology Depar.ment Faculty of Sciences Cairo University Giza Egypt Engineer.ng and Envir.nmental Geology Depar.ment Faculty of Earth Sciences King Abdulaziz University Jeddah KSA

Wadi Qudaid is located in the west centr.l par. of Saudi Ar.bia. It about 135 km to the nor.heast of Jeddah city along Al Har.mein highway and it r.pr.sents the upstr.am of the ver. lar.e alluvial plain along the r.d ... 详细信息

Wadi Qudaid is located in the west centr.l par. of Saudi Ar.bia. It about 135 km to the northeast of Jeddah city along Al Haramein highway and it represents the upstream of the very large alluvial plain along the Red Sea coast. It runs in NE direction parallel to many wadis of the west central part of Saudi Arabia i.e. Wadi Fatima, wadi Sitarah. The wadi floor is filled by Quaternary deposits which represent good groundwater aquifer. Geologically, the present-day residual landforms of Wadi Qudaid are composed mainly of Precambrian Arabia shield rocks overlained by Tertiary sedimentary rocks and finally harrat (Tertiary volcanic). The Precambrian rocks are represented by 1) a lower layered basic and intermediate volcanic and the intercalated volcaniclastics. This unit is correlatable with Samran Group, 2) an upper layered acidic volcanic and the intercalated acidic volcaniclastics. The Arabian shield rocks are intensively folded and dragged along the major NE faults. They are directly overlain by Tertiary basic volcanic (harrat) and the related volcanoclastic red beds). The main geomorphologic elements of the study area include plateau, scarps, and the wadi floor. The plateau is represented by the black basaltic sheet that contains some semi-rounded depressions filled with Quaternary eolian sands. The scarps of the main wadi and its tributaries are nearly steep and contain many asphaltic roads with some isolated cone hills detached from the scarps. Geomorphological, Wadi Qudaidr.ana;font-size:12px;"> r.pr.sents the incomplete er.sion cycle that begins with

关键词： Wadi Qudaid Geomor.hology of Saudi Ar.bia Landfor.s Evolution Er.sion Cycle Ur.an Extensions

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Local Binar. Patter.s and Its Var.ants for.Finger.Knuckle Pr.nt r.cognition in Multi-r.solution Domain

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Cir.uits and Systems 2016年第10期7卷 3142-3149页

作者： D. r. Ar.n C. Chr.stopher.Columbus K. Meena Depar.ment of Infor.ation Technology PSN College of Engineering and Technology Tirunelveli India Depar.ment of Electr.cal and Electr.nics Engineer.ng PSN College of Engineering and Technology Tirunelveli India Depar.ment of Computer.Science and Engineer.ng Veltech DR. RR & DR. SR Technical University Chennai India

Finger.Knuckle Pr.nt biometr.c plays a vital r.le in establishing secur.ty for.r.al-time envir.nments. The success of human authentication depends on high speed and accur.cy. This paper.pr.posed an integr.ted appr.ach of per.onal authentication using textur. based Finger.Knuckle Pr.nt (FKP) r.cognition in multir.solution domain. FKP images ar. r.ch in textur. patter.s. r.cently, many textur. patter.s ar. pr.posed for.biometr.c featur. extr.ction. Hence, it is essential to r.view whether.Local Binar. Patter.s or.its var.ants per.or. well for.FKP r.cognition. In this paper. Local Dir.ctional Patter. (LDP), Local Der.vative Ter.ar. Patter. (LDTP) and Local Textur. Descr.ption Fr.mewor. based Modified Local Dir.ctional Patter. (LTDF_MLDN) based featur. extr.ction in multir.solution domain ar. exper.mented with Near.st Neighbor.and Extr.me Lear.ing Machine (ELM) Classifier.for.FKP r.cognition. Exper.ments wer. conducted on PolYU database. The r.sult shows that LDTP in Contour.et domain achieves a pr.mising per.or.ance. It also pr.ves that Soft classifier.per.or.s better.than the har. classifier.

关键词： Biometr.cs Finger.Knuckle Pr.nt Contour.et Tr.nsfor. Local Binar. Patter. (LBP) Local Dir.ctional Patter. (LDP) Local Der.vative Ter.ar. Patter. (LDTP) Local Textur. Descr.ption Fr.mewor. Based Modified Local Dir.ctional Patter. (LTDF_MLDN) Near.st Neighbor.(NN) Classifier Extr.me Lear.ing Machine (ELM) Classifier

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Separ.tion, Identification, Isolation and Char.cter.zation of Degr.dation Pr.duct of Osimer.inib Tablets by UPLC-QTOF-MS/MS and NMr. Evaluation of <i>In-Silico</i>Safety Assessment for.Osimer.inib (OSM) and Degr.dation Pr.duct (DP)

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Advances in Biological Chemistr. 2021年第1期11卷 15-29页

作者： Ar.n D. Bhutnar.Seema r. Saple Vikas V. Vaidya Depar.ment of Chemistr. Kirti M Doongursee College Mumbai University Mumbai India r.yal college of Ar.s Science and commerce Mumbai University Thane India

The pr.sent wor. encompasses identification and char.cter.zation of major.degr.dation pr.duct (DP) of OSM obser.ed in base hydr.lytic str.ss study. The separ.tion of DP was car.ied out on a non-polar.stationar. phase ... 详细信息

The present work encompasses identification and characterization of major degradation product (DP) of OSM observed in base hydrolytic stress study. The separation of DP was carried out on a non-polar stationary phase by using high-performance liquid chromatography system (HPLC). Using waters X-bridge (250 mm × 4.6 mm, 5 μm) C18 column with gradient elution program. For the characterization study, stress samples were subjected to HPLC and UPLC-QTOF-MS/MS and based on mass fragmentation pattern, plausible structure was deduced. Further, the DP was isolated using semi-prepara- tive liquid chromatography and concentrated the fractions using lyophilization. The isolated DP was subjected to extensive 1D (1H, 13C, and DEPT-135) and 2D (COSY, HSQC and HMBC) nuclear magnetic resonance (NMR) studies to authenticate the structure. The impurity was unambiguously named as N-(2-((2-(dimethylamino)ethyl)(methyl)amino)-4-metho-r.ana;">xy-5-

关键词： Osimer.inib Mesylate (OSM) Base Degr.dation Semi-Pr.par.tive Isolation and Char.cter.zations by HPLC UPLC-QTOF-MS/MS NMr.Techniques

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Influence of Heat Tr.atment on the Bond Coat Cyclic Oxidation Behaviour.in an Air.plasma-spr.yed Ther.al Bar.ier.Coating System

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材料热处理学报 2004年第05B期25卷 923-929页

作者： W.r.Chen X.Wu B.r.Mar.le P.C.Patnaik Str.ctur.s MaterialsandPropulsionLaboratoryInstituteforAerospaceResearchNationalResearchCouncilCanadaOttawaOntarioCanadaK1AOR6 Industr.alMater.alsInstitute NationalResearchCouncilCanadaBouchervilleQuebecCanadaJ4B6Y4

It is gener.lly believed that a ther.ally gr.wn oxide (TOO) layer.of alumina pr.vides enhanced pr.tection to the metallic bond coat in ther.al bar.ier.coating (TBC) systems at elevated temper.tur.s. However. in an air.plasma-spr.yed (APS) TBC system with Co-32Ni-21Cr.8Al-0.5Y (wt%) bond coat, the TGO layer.for.ed upon ther.al exposur. in air.was pr.dominantly chr.mia and spinels, which would not effectively pr.tect the bond coat at above 1000°C. In addition, mixed oxides of chr.mia, spinel and nickel oxide for.ed heter.geneously between the cer.mic coating and CoNiCr.lY bond coat, which would pr.mote cr.ck initiation and lead to pr.matur. TBC failur.. A heat tr.atment in a low-pr.ssur. condition was applied to the as-spr.yed TBC system, with the aim to pr.duce an alumina layer.as well as r.duce the amount of detr.mental oxides. The influence of this low-pr.ssur. oxidation tr.atment (LPOT) on the bond coat cyclic oxidation behaviour.of the TBC system was also investigated.

关键词：热处理 TGO TBC 低压氧化周期性氧化 CoNiCr.lY合金

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全球预警 1991年世界形势评述

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1992年

作者：（美）莱斯特·r.布朗等贡光禹等译

书名原文：State of the wor.d 1991：A wor.dwatch institute r.por. on pr.gr.ss towar. a sustainable socitey:本书是美国著名的世界观察研究所发表的向持续社会发展迈进的1991年度进展报告。重点阐述了今后30年建立在大力改善地球... 详细信息

ISBN: (纸本)7502315667

书名原文：State of the wor.d 1991：A wor.dwatch institute r.por. on pr.gr.ss towar. a sustainable socitey:本书是美国著名的世界观察研究所发表的向持续社会发展迈进的1991年度进展报告。重点阐述了今后30年建立在大力改善地球生态系统基础上的世界新秩序，大力开发可持续发展的能源系统，重新考虑城市交通，再造森林，恢复东欧和苏联环境等十大问题。

关键词：世界经济学科:研究人类生态学地点:世界

来源：汇雅图书（南通市图书馆... 评论

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A Single Ser.er.Queue with Coxian-2 Ser.ice and One-Phase Vacation (M/C-2/M/1 Queue)

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Open Jour.al of Applied Sciences 2021年第6期11卷 766-774页

作者： Zeyad r. Al-r.wi Khalid M. S. Al Shboul Al-r.sheed Univer.ity College Baghdad Iraq Statistical Center Abu Dhabi UAE

In this paper. we study a single ser.er.queueing system with Coxian-2 ser.ice. In Par.icular. we study M/C-2/M/1 queue with Coxian-2 ser.ice and exponential vacation. We assume that units (customer.) ar.ive at the system one by one in a Poisson pr.cess and the ser.er.pr.vides one-by-one ser.ice based on fir.t in fir.t out (FIFO) r.le. We obtained the steady state queue size distr.butions in ter.s of the pr.bability gener.ting functions, the aver.ge number.of customer. and their.aver.ge waiting time in the system as well as in the queue.

关键词： Single Ser.er.Queues Poisson Ar.ivals Coxian-2 Distr.bution Time Depending Solution Steady State Solution

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Finite Element Appr.ach for.the Solution of Fir.t-Or.er.Differ.ntial Equations

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Jour.al of Applied Mathematics and Physics 2020年第10期8卷 2072-2090页

作者： Andr. Schmidt Hor.t r. Beyer.Matthias Hinze Evangelos N. Vandor.s Institute for.Nonlinear.Mechanics Stuttgart Germany Instituto Tecnológico Super.or.de Ur.apan Uruapan México

The finite element method has established itself as an efficient numer.cal pr.cedur. for.the solution of ar.itr.r.-shaped field pr.blems in space. Basically, the finite element method tr.nsfor.s the under.ying differ.ntial equation into a system of algebr.ic equations by application of the method of weighted r.siduals in conjunction with a finite element ansatz. However. this pr.cedur. is r.str.cted to even-or.er.d differ.ntial equations and leads to symmetr.c system matr.ces as a key pr.per.y of the finite element method. This paper.aims in a gener.lization of the finite element method towar.s the solution of fir.t-or.er.differ.ntial equations. This is achieved by an appr.ach which r.places the fir.t-or.er.der.vative by fr.ctional power. of oper.tor. making use of the squar. r.ot of a Stur.-Liouville oper.tor. The r.sulting pr.cedur. incor.or.tes a finite element for.ulation and leads to a symmetr.c but dense system matr.x. Finally, the scheme is applied to the bar.metr.c equation wher. the r.sults ar. compar.d with the analytical solution and other.numer.cal appr.aches. It tur.s out that the r.sulting numer.cal scheme shows excellent conver.ence pr.per.ies.

关键词： Finite Element Method Fir.t-Or.er.Differ.ntial Equations Fr.ctional Power. of Oper.tor.

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GLIMPSE: Using Social Media to Identify the Bar.ier. Facing Far.er.’ Quest to Feed the Wor.d

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Social Networ.ing 2016年第4期5卷 118-127页

作者： Aidan J. Connolly Luiz r. Sodr. Alexa D. Potocki Alltech Inc. Nicholasville KY USA

The ubiquitous natur. of social media in today’s wor.d offer. unpar.lleled insights into human thinking. When people wr.te Facebook posts, blogs, Tweet, Instagr.m and WeChat they allow their.r.al feelings and r.flections to be exhibited, unvar.ished and unfilter.d. Fr.m this per.pective the use of data analytical tools such as Wor.le wor. association mapping and other.tools can tr.ly show thr.ugh fr.quency of wor. used, wor. connections and consumer.insights. The example of far.ing and food pr.duction is instr.ctive. Five year. ago a new acr.nym GLIMPSE in IFAMr.was pr.posed to summar.ze the bar.ier. faced by agr.cultur. in its quest to feed the wor.d. This was based on a Delphi analysis of 25 exper. inter.iews. In or.er.to confir. GLIMPSE, a lar.er.r.sear.h effor. inter.iewed 57 exper.s, conducted an online sur.ey with almost 600 exper.s and for.the fir.t time ever.in this sector.algor.thms wer. applied to over.1.3 million qualified social media postings on the inter.et r.fer.ing to the challenge of feeding a gr.wing wor.d population. This allowed the compar.son to confir. the factor. that most clear.y depict the gener.l public’s concer.s with r.spect to food pr.duction and agr.cultur.. The value for.policy maker. is clear. While inter.ational policy maker., gover.ments, non-gover.mental or.anizations (NGOs), char.ties, industr. or.anizations, integr.ted food companies and far.er. often str.ggle to explain to the gener.l population the challenges of incr.asing food pr.duction of both lar.e and small scale far.ing the social media analysis is unique and or.ginal in its ability to confir. the GLIMPSE fr.mewor. as a manner.to encompass the main challenges agr.cultur. faces on its jour.ey to feed over.9 billion people by 2050.

关键词： Food Wor.d Sustainability Agr.cultur. Agr.business Far.ing Policy

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Gait Image Classification Using Deep Lear.ing Models for.Medical Diagnosis

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Computer., Mater.als & Continua 2023年第3期74卷 6039-6063页

作者： Pavitr. Vasudevan r.Faer.e Mattins S.Sr.var.han Ashvath Nar.yanan Gayatr. Wadhwani r.Par.athi r.Maheswar. School of Computer.Science and Engineer.ng Vellore Institute of TechnologyChennaiTamil NaduIndia centr. for.smar. gr.d technologies scopevellore institute of technologychennaitamil naduindia

Gait r.fer. to a per.on’s par.icular.movements and stance while moving *** each per.on’s gait is unique and made up of a var.ety of tiny limb or.entations and body positions,they all have common char.cter.stics that help to define *** identifying such char.cter.stics that ar. difficult to spot by the naked eye,can help in monitor.ng the elder.y who r.quir. constant car. and *** silhouettes is the easiest way to assess and make any necessar. adjustments for.a smooth *** also becomes an impor.ant aspect of decision-making while analyzing and monitor.ng the pr.gr.ss of a patient dur.ng medical *** images made publicly available by the Chinese Academy of Sciences(CASIA)Gait Database was used in this *** evaluating using the CASIA B and C datasets,this paper.pr.poses a Convolutional Neur.l Networ.(CNN)and a CNN Long Shor.-Ter.Memor. Networ.(CNN-LSTM)model for.classifying the gait silhouette *** lear.ingmodels such as MobileNetV2,InceptionV3,Visual Geometr. Gr.up(VGG)networ.s such as VGG16 and VGG19,r.sidual Networ.s(r.sNet)like the r.sNet9 and r.sNet50,wer. used to compar. the efficacy of the pr.posed *** pr.ved to be the best by achieving the highest accur.cy of 94.29%.This was followed by r.sNet9 and CNN-LSTM,which ar.ived at 93.30%and 87.25%accur.cy,r.spectively.

关键词： CNN CNN-LSTM tr.nsfer.lear.ing CASIA datasets gait analysis

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