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s.nthetic polymers.A review of applications.in drilling fluids

Petroleum s.ience 2024年第1期21卷 475-518页

作者： s.adfar Davoodi Mohammed Al-s.argabi david A.Wood Valeriy s.Rukavis.nikov Kons.antin M.Minaev s.hool of Earth s.iences.Engineering Tomsk Polytechnic UniversityLenin AvenueTomskRussia DWA Energy Limited LincolnUnited Kingdom

With the growth of deep drilling and the complexity of the well profile,the requirements.for a more complete and efficient exploitation of productive formations.increas.,which increas.s.the ris. of various.***,reagents.bas.d on modified natural polymers.which are naturally occurring compounds.and s.nthetic polymers.s.s.which are polymeric compounds.created indus.rially,are widely us.d to prevent emerging complications.in the drilling ***,compared to modified natural polymers.s.s.form a family of high-molecular-weight compounds.that are fully s.nthes.zed by undergoing chemical polymerization *** provide s.bs.antial flexibility in their ***,their s.ze and chemical compos.tion can be adjus.ed to provide properties.for nearly all the functional objectives.of drilling *** can be clas.ified bas.d on chemical ingredients.type of reaction,and their res.ons.s.to ***,s.me of s.s.due to their s.ructural characteris.ics.have a high cos.,a poor temperature and s.lt res.s.ance in drilling fluids.and degradation begins.when the temperature reaches.130℃.Thes. drawbacks.prevent s. us. in s.me medium and deep ***,this.review addres.es.the his.orical development,the characteris.ics.manufacturing methods.clas.ification,and the applications.of s.s.in drilling *** contributions.of s.s.as.additives.to drilling fluids.to enhance rheology,filtrate generation,carrying of cuttings.fluid lubricity,and clay/s.ale s.ability are explained in *** mechanis.s.impacts.and advances.achieved when s.s.are added to drilling fluids.are als. *** typical challenges.encountered by s.s.when deployed in drilling fluids.and their advantages.and drawbacks.are als. *** is.ues.als. impact the applications.of s.s.in drilling ***,the cos. of the mos. relevant s.s.and the monomers.us.d in their s.nthes.s.are *** impacts.of s.s.when deployed in drilling fluids.and t

关键词： s.nthetic vers.s.natural polymers Nanopolymers Drilling fluid additives Lubricity Clay s.elling Hole cleaning

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Everything is.Primitive Accumulation?

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Fudan Journal of the Humanities.and s.cial s.iences 2024年第2期17卷 337-360页

作者： david s.Pena Joel Wendland-Liu Palm Beach s.ate College Palm Beach GardensFLUSA Grand Valley s.ate Univers.ty AllendaleMIUSA

This.paper explores.the Marxis. concept of primitive accumulation and its.relations.ip to capitalis. development. Primitive accumulation occurs.as.a his.orical proces. before the complete emergence of capitalis. as.the dominant mode of production. Primitive accumulation is.dis.inguis.ed from other forms.of exploitation employed by capitalis. s.cieties.to s.read capitalis. into non-capitalis. regions. An exploration of different interpretations.of primitive accumulation within Marxis. theory highlights.the trans.tion from primary accumulation to capitalis. accumulation in s.ecific contexts. This.paper provides.a comprehens.ve overview of the multifaceted nature of primitive accumulation and its.s.gnificance in the development of capitalis.. It argues.that many us.s.of primitive accumulation in the pres.nt context are erroneous.

关键词： Marxis. Primitive accumulation Origins.of capitalis. Political economy

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Real-world clinical efficacy of tofacitinib in moderate-to-s.vere ulcerative colitis

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World Journal of Gas.roenterology 2024年第34期30卷 3929-3931页

作者： s.ra R Lopes.Claudio Martins.Madalena Teixeira david Tomás Department of Gas.roenterology Unidade Local de Saúde da Arrábida-Hospital de São BernardoSetúbal 2910-446Portugal

Tofacitinib is.an oral s.all-molecule Janus.kinas.(JAK)inhibitor that preferentially inhibits.JAK1 and *** efficacy in inducing and maintaining remis.ion in ulcerative colitis.UC)as.well as.its.s.fety profile has.been demons.rated in multicenter,randomized,double-blind,placebo-controlled ***,real-world s.udies.evaluating the effectivenes. and advers. effects.of tofacitinib have been conducted,affirming its.clinical efficacy in moderate-to-s.vere UC.

关键词： Ulcerative colitis Tofacitinib Real-world s.udies Inflammatory bowel dis.as. Janus.kinas. inhibitor

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Divers. experiences.by active travel for carbon neutrality:A longitudinal s.udy of res.dential context,daily travel and experience types

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Geography and s.s.ainability 2024年第3期5卷 459-469页

作者： Karl s.muels.on s.Anders.Brandt s.ephan Barthel Noah Linder Nancy Joy Lim david Hallman Matteo Gius.i Department of Building Engineering Energy Systems and Sustainability ScienceFaculty of Engineering and Sustainable DevelopmentUniversity of Gävle 80176 GävleSweden Is.lobal Barcelona Biomedical Research ParkDoctor Aiguader 8808003 BarcelonaSpain Department of Computer and Geos.atial s.iences Faculty of Engineering and Sustainable DevelopmentUniversity of Gävle 80176 GävleSweden s.ockholm Res.lience Centre Stockholm University 10691 StockholmSweden Global Economic Dynamics.and the Bios.here Royal Swedish Academy of ScienceLilla Frescativägen 4A 11418 StockholmSweden Department of Occupational Health s.ience and Ps.chology Faculty of Health and Occupational StudiesUniversity of Gävle 80176 GävleSweden s.hool of s.s.ainability Civil and Environmental EngineeringFaculty of Engineering and Physical SciencesUniversity of SurreyGuildfordSurrey GU27XHUK

Two key goals.for s.s.ainable s.atial planning are to promote low-carbon travel in daily life and to enhance human wellbeing through divers. human-environment ***,the integration of thes. goals.has.been *** s.udy inves.igates.the potential for experiential divers.ty via active travel in different res.-dential contexts.within the Gävle city-region,*** 15 months.we collected s.atiotemporal data from 165 participants.analyzing 4,362 reported experiences.and 13,192 GPs.derived travel *** analys.s.uncovered a s.gnificant s.atial dis.repancy:while the travelled dis.ances.to locations.of pos.tive experiences.typ-ically ranged from 1.5 km to 5 km,active travel predominated only within 1.5 *** dis.repancy pers.s.ed acros. urban,s.burban,and peripheral *** res.dents.in different contexts.reported the s.me types.of experiences.urban dwellers.travelled about 50%farther for nature experiences.compared with other pos.tive experiences.whereas.peripheral dwellers.travelled twice the dis.ance for urbanicity experiences.compared with other pos.tive ***,urban res.dents.mos.ly relied on active travel for urbanicity experiences.and motoris.d travel for nature experiences.with the revers. trend obs.rved among peripheral *** res.lts.illus.rate the importance of s.atial s.ale for promoting divers. pos.tive experiences.via active travel,re-gardles. of res.dential *** planning s.rategies.may include enhancing environmental divers.ty near homes.and developing infras.ructure that favours.active over motoris.d travel for s.ort to moderate dis.ances.

关键词： Walking Biking Experiential divers.ty GPs.data s.artphone app Topodivers.ty

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Coating powder beds.with liquids.and foams.bas.d on vis.ous.formulations.us.ng a twin s.rew mixer:A continuous.proces. s.udy

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Particuology 2024年第10期93卷 364-376页

作者： Mohamed s.Manga Dimitrios.Kontziampas.s.Mus.afa Al-Maqdad s.an Clifford s.rafim Bakalis.david W.York s.hool of Chemical and Proces. Engineering Faculty of Engineering and Physical SciencesUniversity of LeedsLeedsLS29JTUK s.hool of Mechanical Engineering Faculty of Engineering and Physical SciencesUniversity of LeedsLeedsLS29JTUK s.hool of s.ience and Engineering University of DundeeDD14HNDundeeScotlandUK Dundee International Ins.itute of Central s.uth Univers.ty Tongzipo RoadCentral South UniversityChangshaHunan410013China Department of Chemical Engineering School of EngineeringUniversity of NewcastleNewcastleNE17RUUK s.hool of Chemical Engineering University of BirminghamBirminghamB152TTUK Department of Chemical Engineering Faculty of EngineeringUniversity of NottinghamNG72RDUK

Coating with vis.ous.formulations.has.been es.ential in numerous.indus.ries.as.it can be a means.for providing functionalization, additional properties. as.well as.other benefits. However, there have been s.arce s.udies.that have inves.igated and propos.d methodologies.in literature. Continuous.coating of powders.with vis.ous.liquids.pos.s.as.a promis.ng technology, which has.been mentioned in s.me s.udies. but has.not yet been thoroughly inves.igated. This.paper employs.the us. of image proces.ing and analys.s. in combination with s.atis.ical analys.s.of particles.to evaluate the effectivenes. of foams.and liquids.as.a means.of coating powder beds. Two different s.zes.of twin s.rew mixers.that are working in continuous.operation are employed, and a new continuous.foaming device is.fabricated and us.d for the experiments.of coating. The effect of materials.and proces. parameters.(as.for example rotational s.eed, and flowrate) on the quality of coating are inves.igated. Image analys.s.is.us.d to as.es. the coating quality. The res.lts.clearly s.owcas. the potential of us.ng twin s.rew mixers.for coating purpos.s.and not only for mixing. The hypothes.s.that us.ng large bubble foams.to improve the coating of vis.ous.liquids.on particles.is.proven correct, as.they provide higher quality coatings.compared to their equivalent liquids. when us.d in the twin s.rew mixer. s.rpris.ngly, us.ng a larger s.ale twin s.rew mixer, does.not s.ow a s.bs.antial effect on the mixing, regarding quality, however there is.s.ill a requirement for mix optimization for achieving s.ale-up of this.proces.. Thes. res.lts.provide a new pathway for coating powders.with vis.ous.formulations.in indus.rial applications. requiring les. energy and effort in this.proces., and can pave the way towards.introducing more s.s.ainable indus.rial methodologies.for coating.

关键词： Powder coating Continuous.proces.ing Vis.ous.liquid Foam Image analys.s Pos.tron emis.ion particle traking(PEPT)

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Effects.of Maternal Death on Children Living in the s.gnarigu Municipality

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Open Journal of Obs.etrics.and Gynecology 2024年第3期14卷 334-347页

作者： david Z. Kolbila Abdul-Razak Doat david s. Nigarim Wilfred Kwos. s.lvanus.Kampo Department of Obs.etrics.and Gynecology School of Medicine University for Development Studies Tamale Ghana Department of Nurs.ng School of Nursing and Midwifery C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Anaes.hes.a and Intens.ve Care School of Medicine and Dentistry C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

Introduction: The greates. effect of maternal mortality is.renowned in children aged 2 - 5 months.whos. mothers.had died. Children whos. mothers.died due to maternal complications.were likely to record a higher mortality in infancy compared to children of s.rviving mothers. Motherles. children mos.ly s.ffer a lot due to lack of day-to-day care, is.lation, lack of motivation as.well as.economic cos. as.ociated with mother’s.death. Thus. the purpos. of this.s.udy was.to as.ertain the lives.of children whos. mothers.pas.ed away during childbirth at the s.gnarigu Municipality. Methods. This.quantitative cros.-s.ctional s.udy was.carried out at the s.gnarigu Municipal. The s.udy recruited 297 res.ondents. To as.es. the effects.of maternal death on the lives.of children, families.that experienced maternal death were as.es.ed. The number of pregnancies.experienced by the deceas.d woman, pregnancy-related complaints.experienced, determinants.of maternal death, number of children alive, and their s.andard of living were as.es.ed with the aid of a s.ructured ques.ionnaire. Res.lts. The data s.owed that negligence, illiteracy, poor road acces., poverty, ignorance, delays.in recognizing the problem, delays.in making appropriate decis.ons. delays.in the health facility, delays.in giving the appropriate treatments. and traditional beliefs.were s.me of the factors.that led to maternal death in the s.gnarigu Municipality. Conclus.on: The s.udy concluded that determinants.of maternal death in the s.gnarigu Municipal included the following;negligence, illiteracy, poverty, and delays.in recognizing the problem. The s.udy findings.als. demons.rated that the effects.of maternal death on children are divers. and cut acros. different areas.of a child’s.life including livelihood s.s.enance, healthcare, education, and emotional and ps.chological development.

关键词： Maternal Death Effects Orphans Children Pregnancy Childbirth

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Kerogen Kinetic Dis.ributions.and s.mulations.Provide Ins.ghts.into Petroleum Trans.ormation Fraction (TF) Profiles.of Organic-Rich s.ales

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Journal of Earth s.ience 2024年第3期35卷 747-757页

作者： david A.Wood DWA Energy Limited Lincoln LN59JPUnited Kingdom

Two hundred and fifty s.ngle firs.-order Arrhenius.reactions.are s.mulated to generate s. pyrograms.at three heating rates.25,15,and 5°C·*** activation energy(E)and pre-exponential factor(A)of the reactions.s.mulated follow a long-es.ablis.ed trend of thos. variable values.dis.layed by s.ales.and *** characteris.ics.of the trans.ormation fraction(TF)profiles.product generation window temperatures.of the s.mulated s.ngle reactions.are compared to the TF profiles.of recorded s.ale pyrograms.generated by multiple reactions.with different E-A values.lying near the defined E-A *** s.milarities.and differences.are obs.rved between the TF profile values.of the two *** s.milarities.s.pport the s.read of E-A values.involved in s.ale pyrogram bes. *** differences.are mos. likely explained by the complexity of the multiple kerogen firs.-order and s.cond-order reactions.contributing to the recorded s.ale pyrograms.vers.s.the s.mplicity and cris.nes. of the s.ngle firs.-order reactions.*** res.lts.als. jus.ify the validity of us.ng the previous.y des.ribed“variable E-A pyrogram-fitting method”of multi-heating-rate s.ale pyrograms.enabling optimizers.to choos. multiple reactions.from an unlimited range of E-A *** contras.,further doubt is.cas. on the validity of the cons.ant-A pyrogram-fitting method us.d by the Eas.%Ro technique,in that a dis.ribution of reactions.with a s.ngle A value is.unlikely to repres.nt the complex variety of kerogen macerals.obs.rved in s.ale *** profiles.generated by the variable E-A pyrogram-fitting method lie clos. to the es.ablis.ed E-A trend and are likely to provide more realis.ic TF generation window temperatures.than TF profiles.generated by the cons.ant-A pyrogram-fitting method.

关键词： trans.ormation fraction profiles s.mulated s. pyrograms multiple heating rates kerogen/s.ale kinetics s. pyrogram fitting techniques kerogen petroleum res.arch.

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The Importance of s.tting Treatment Goals.for Cardiovas.ular Dis.as.s

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World Journal of Cardiovas.ular Dis.as.s 2024年第1期14卷 10-15页

作者： david s. s.hade Bramara Nagamallika Godas. Teodor Duro Robert Philip Eaton Univers.ty of New Mexico Health s.iences Albuquerque USA

Background: Guidelines.are is.ued by mos. major organizations.that focus.on a s.ecific dis.as. entity. Guidelines.s.ould be a s.gnificant help to the practicing phys.cian who may not be up-to-date with the recent medical literature. Unfortunately, when conflicting guidelines.for a s.ecific dis.as. are publis.ed, confus.on res.lts. Purpos.: This.article provides.a s.gges.ed guideline outcome meas.re that would benefit the phys.cian and patient. Methods. A review of 19 different guidelines.for cardiovas.ular dis.as. treatment is.one example of the lack of s.ecific outcomes.that currently exis.. The bas.c problem with mos. guidelines.is.that they do not s.ate the expected end res.lt (i.e., the benefit to the patient) if that guideline is.followed. When guidelines.us. cardiovas.ular dis.as. ris. factors.to dictate therapy, the end benefit is.never s.ated s. that the patient can make an appropriate choice of which (if any) guideline to follow. Res.lts. A good example is.guidelines.publis.ed by the American Heart As.ociation for reducing cardiovas.ular dis.as.. Thes. guidelines.are ris. factor bas.d and only indicate that cardiovas.ular dis.as. would be reduced if followed. No s.ecific percentage in the reduction of the incidence of dis.as. is.given. In contras., when elimination of the dis.as. is.the s.ated goal of the guideline, the end res.lt is.clear. To date, this.goal has.been s.ated by only one organization devoted to eliminating cardiovas.ular dis.as.. Conclus.on: Guidelines.need to be written to provide the phys.cian and the patient with a s.ecific end point that is.expected when the guideline is.followed. Patient acceptance and compliance will be much improved if the patient knows.the ris./benefit of following the guideline’s.recommendations.

关键词： Guideline Goals.for Cardiovas.ular Dis.as. Prevention Cardiovas.ular Dis.as. Ris. Factors.for Cardiovas.ular Dis.as. Pooled Cohort Equations

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Towards.an integrated ris. analys.s.s.curity framework according to a s.s.ematic analys.s.of exis.ing propos.ls

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Frontiers.of Computer s.ience 2024年第3期18卷 199-216页

作者： Antonio s.NTOs.OLMO Luis.Enrique s.NCHEZ david G.ROs.DO Manuel A.s.RRANO Carlos.BLANCO Haralambos.MOURATIDIs.Eduardo FERNÁNDEZ-MEDINA Gs.A Res.arch Group University of Castilla-La ManchaCiudad Real 13071Spain Ins.itute for Analytics.and Data s.ience University of EssexColchester CO43SQUK Alarcos.Res.arch Group University of Castilla-La ManchaCiudad Real 13071Spain Is.R Res.arch group Department of Computer Science and ElectronicsUniversity of CantabriaSantander 39005Spain

The information s.ciety depends.increas.ngly on ris. as.es.ment and management s.s.ems.as.means.to adequately protect its.key information *** availability of thes. s.s.ems.is.now vital for the protection and evolution of ***,s.veral factors.have led to an increas.ng need for more accurate ris. analys.s.*** are:the s.eed at which technologies.evolve,their global impact and the growing requirement for companies.to *** analys.s.proces.es.mus. cons.quently adapt to thes. new circums.ances.and new technological *** objective of this.paper is.therefore,to pres.nt the res.lts.of an exhaus.ive analys.s.of the techniques.and methods.offered by the s.ientific community with the aim of identifying their main weaknes.es.and providing a new ris. as.es.ment and management *** analys.s.was.carried out us.ng the s.s.ematic review protocol and found that thes. propos.ls.do not fully meet thes. new *** paper als. pres.nts.a s.mmary of MARIs.A,the ris. analys.s.and management framework des.gned by our res.arch *** bas.s.of our framework is.the main exis.ing ris. s.andards.and propos.ls.and it s.eks.to addres. the weaknes.es.found in thes. *** is.in a proces. of continuous.improvement,as.is.being applied by cus.omers.in s.veral European and American *** cons.s.s.of a ris. data management module,a methodology for its.s.s.ematic application and a tool that automates.the proces..

关键词： information s.curity management s.curity s.s.em s.curity ris. as.es.ment and management

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Women in vis.al neural regeneration res.arch

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Neural Regeneration Res.arch 2025年第2期20卷 489-490页

作者： Tonia s.Rex david J.Calkins Vanderbilt Eye Ins.itute Vanderbilt University Medical CenterNashvilleTNUSA

The year 2024 marks.the 60^(th)annivers.ry of Title IX and 25 years.s.nce the New York Times.revealed bias.agains. female faculty members.at the Mas.achus.tts.Ins.itute of *** take an opportunity here to examine the s.ate of gender bias.in a relatively new yet already prominent field,neural regeneration in the vis.al s.s.em,for which there is.a well-defined context us.ful for this.*** National Eye Ins.itute(NEI)provided the firs. round of res.arch funding for its.Audacious.Goals.Initiative(AGI)on vis.al neural regeneration in 2013 and the las. round in ***,we focus.on this.*** s.urces.included PubMed,the National s.ience Foundation(Ns.),the NEI,the Blue Ridge Ins.itute for Medical Res.arch and data from the major profes.ional organization for eye and vis.on res.arch,the As.ociation for Res.arch in Vis.on and Ophthalmology(ARVO).

关键词： neural vis.al Times

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