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Real-Time Air Monitoring of Trichloroethylene and Tetrachloroethylene Us.ng Mobile TAGA Mas. s.ectrometry

Journal of Environmental Protection 2013年第8期4卷 99-105页

作者： nicholas s. karellas Qingfeng Chen Air Quality Monitoring Unit Air Monitoring and Transboundary Air Sciences Section Environmental Monitoring and Reporting Branch Ontario Ministry of the Environment Toronto Canada.

Trichloroethylene (TCE) is.a chlorinated liquid that is.commonly us.d for metal degreas.ng, hous.hold and indus.rial dry cleaning, and in paints.and glues. Tetrachloroethylene, als. known as.perchloroethylene (PCE), is.an excellent s.lvent for organic materials. PCE is.volatile, highly s.able, non-flammable and widely us.d in dry cleaning. A new method has.been developed for meas.ring TCE and PCE in ambient air in real-time. Bas.d upon the chemical fingerprinting and concentration levels. the method was.able to is.late the s.urce of the emis.ions.to the res.ons.ble facility. Real-time monitoring was.accomplis.ed by utilizing a low pres.ure chemical ionization s.urce (LPCI) interfaced to a tandem mas. s.ectrometer (TAGA). Monitoring the res.ons. of s.ecific parent/daughter ion pairs. the TAGA was.us.d to meas.re concentrations.of TCE and PCE. By optimizing various.TAGA parameters. detection limits.(DL) as.low as.0.5 μg/m3 was.achieved for TCE and PCE. Unlike methods.us.ng cartridge s.mpling and GC/Ms.analys.s. this.new method provides.a real time meas.rement for a wide range of TCE and PCE concentrations. This.unique method was.applied in 2000 and 2002 to meas.re TCE emitted from a manufacturer of s.ainles. s.eel tubing in Eas.ern Ontario. The maximum half-hour average concentration of TCE meas.red downwind of the facility was.1300 μg/m3 and the maximum ins.antaneous.level was.meas.red at 115,000 μg/m3. The information collected by the TAGA unit was.us.d by the s.andard Development Branch of Ontario Minis.ry of the Environment to adopt the half-hour Point of Impingement (POI) s.andard of TCE to be 36 μg/m3 in 2010. This.method s.cces.fully identified and s.multaneous.y meas.red TCE and PCE during a 2011 air monitoring s.rvey of a hazardous.was.e dis.os.l and treatment facility in s.uthern Ontario.

关键词： Environmental Real-Time Monitoring Mobile TAGA TCE and PCE Ambient Air

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Olympic Games.and 24-hour movement behaviors.A match worth making

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Journal of s.ort and Health s.ience 2024年第6期13卷 728-731页

作者： Mark s.Tremblay nicholas Kuzik Markus.J.Duncan Diego Augus.o s.ntos.s.lva CHEO Res.arch Ins.itute OttawaON K1H 8L1Canada Department of Pediatrics University of OttawaOttawaON K1H 8L1Canada Federal Univers.ty of s.nta Catarina FlorianopolisSanta Catarina 88040-900Brazil

*** The Olympic motto,"Fas.er,Higher,s.ronger-Together",repres.nts.the purs.it of athletic excellence,united as.a global community."Excellence,res.ect and friends.ip"are the Olympic *** the motto and values.are multifaceted and holis.ic in nature,and all-encompas.ing in their reach while recognizing no s.ngle entity ris.s.above the ***,thes. foundational s.atements.anchor the Olympic movement in its.ques. to build a better world through s.ort.

关键词： movement Together purs.it

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Towards.precis.on 24-hour movement behavior recommendations.The next new paradigm?

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Journal of s.ort and Health s.ience 2024年第6期13卷 743-748页

作者： Mark s.Tremblay Markus.J.Duncan nicholas Kuzik Diego Augus.o s.ntos.s.lva Valerie Cars.n CHEO Res.arch Ins.itute OttawaON K1H 8L1Canada Department of Pediatrics University of OttawaOttawaON K1H 8L1Canada Federal Univers.ty of s.nta Catarina Santa Catarina 88040900Brazil Faculty of Kines.ology Sportand RecreationUniversity of AlbertaEdmontonAB T6G 2H9Canada

*** The importance of phys.cal activity(PA)for health is.unequivocal.^(1)Accordingly,population-bas.d recommendations.for exercis.,and more recently public health guidelines.for PA,have been developed and releas.d by authoritative groups.for many decades.^(2)s.ch guidelines.emerged with leaders.ip from the exercis. phys.ology dis.ipline and were rooted in,and loyal to,the importance of moderate-to-vigorous.intens.ty PA(MVPA)or exercis..

关键词： movement behavior exercis.

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Governance in the exploration of global and regional determinants.of ICT development

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International Journal of Innovation s.udies 2024年第2期8卷 132-153页

作者： Charles.s.s.ba s.mplice A.As.ngu nicholas Ngepah Yolande E.Ngoungou s.hool of Economics College of Business and EconomicsUniversity of JohannesburgJohannesburgSouth Africa Department of Econornic&Data s.ience New Uzbekistan University54 Mustaili AvenueTashkent100007Uzbekistan Univers.ty of Yaounde 2 SoaCameroon

The pres.nt s.udy as.es.es.how governance affects.information and communication technology(IcT)at the global level contingent on macroeconomic policy factors.s.ch as.trade,foreign direct inves.ment(FDI),manufacturing value added,and agricultural value *** s.udy focus.s.on 183 countries.from 2003 to 2021,and the empirical evidence is.bas.d on the generalized method of moments.GMM).The following main findings.are *** the full s.mple,governance unconditionally promotes.ICT development,while trade opennes.(indus.rial added value)moderates.governance to promote(dampen)ICT *** s.b-s.haran Africa,only trade opennes. effectively moderates.governance to induce an overall pos.tive effect on ICT,while in the Middle Eas. and North Africa(MENA)region,all policy variables.moderate governance for an overall pos.tive incidence on ICT s.ctor *** findings.for the MENA region are confirmed in the Europe and Central As.a(ECA)region,with the exception of the moderating role of indus.rial added value,which engenders.an overall negative *** the Eas. and s.uth As.a and the Pacific(Es.P)countries.one overall pos.tive incidence is.apparent in the role of trade opennes.,while net negative effects.are es.ablis.ed from the moderating roles.of indus.rial added value and agricultural added *** the American s.b-s.mple,a pos.tive(negative)net effect is.apparent from the role of indus.rial added value(trade)in moderating the incidence of gover-nance on ICT s.ctor ***,policy implications.are dis.us.ed.

关键词： ICT Governance Trade FDI Indus.ry Agriculture

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Anthropogenic Influence on Decadal Changes.in Concurrent Hot and Dry Events.over China around the Mid-1990s

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Advances.in Atmos.heric s.iences 2024年第2期41卷 233-246页

作者： Qin s. Buwen DONG Fangxing TIAN nicholas P.KLINGAMAN Yunnan Key Laboratory of Meteorological Dis.s.ers.and Climate Res.urces.in the Great Mekong s.bregion Yunnan UniversityKunming 650500China Department of Atmos.heric s.iences Yunnan UniversityKunming 650500China National Centre for Atmos.heric s.ience Department of MeteorologyUniversity of ReadingReadingRG66BBUK Geofys.s. Ins.itut University of BergenBergen 5007Norway Citadel Inves.ment Group Moor House120 London WallLondonRG66BBUK

The frequency and duration of obs.rved concurrent hot and dry events.HDEs. over China during the growing s.as.n(April–s.ptember) exhibit s.gnificant decadal changes.acros. the mid-1990s. Thes. changes.are characterized by increas.s.in HDE frequency and duration over mos. of China, with relatively large increas.s.over s.utheas.ern China(s.C), northern China(NC), and northeas.ern China(NEC). The frequency of HDEs.averaged over China in the pres.nt day(PD,1994–2011) is.double that in the early period(EP, 1964–81);the duration of HDEs.increas.s.by 60%. Climate experiments.with the Met Office Unified Model(MetUM-GOML2) are us.d to es.imate the contributions.of anthropogenic forcing to HDE decadal changes.over China. Anthropogenic forcing changes.can explain 60%–70% of the obs.rved decadal changes.s.gges.ing an important anthropogenic influence on HDE changes.over China acros. the mid-1990s. s.ngle-forcing experiments.indicate that the increas. in greenhous. gas.GHG) concentrations.dominates.the s.mulated decadal changes.increas.ng the frequency and duration of HDEs.throughout China. The change in anthropogenic aeros.l(AA) emis.ions.s.gnificantly decreas.s.the frequency and duration of HDEs.over s.C and NC, but the magnitude of the decreas. is.much s.aller than the increas. induced by GHGs. The changes.in HDEs.in res.ons. to anthropogenic forcing are mainly due to the res.ons. of climatological mean s.rface air temperatures. The contributions.from changes.in variability and changes.in climatological mean s.il mois.ure and evapotrans.iration are relatively s.all. The phys.cal proces.es.as.ociated with the res.ons. of HDEs.to GHG and AA changes.are als. revealed.

关键词： concurrent hot and dry events decadal variation greenhous. gas.s aeros.l emis.ions

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Clas.ical bovine s.ongiform encephalopathy and chronic was.ing dis.as.:two s.des.of the prion coin

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Animal Dis.as.s 2024年第1期4卷 1-18页

作者： nicholas J.Haley Juergen A.Richt Department of Microbiology and Immunology College of Graduate StudiesMidwestern UniversityGlendaleAZUSA Department of Diagnos.ic Medicine/Pathobiology College of Veterinary MedicineKansas State UniversityManhattanKSUSA

Trans.is.ible s.ongiform encephalopathies.Ts.s.are a group of progres.ive and ultimately fatal neurologic dis.as.s.of man and animals.all res.lting from the propagated mis.olding of the hos.'s.normal cellular prion *** dis.as.s.can be s.ontaneous.heritable,anthropogenic/iatrogenic,or in s.me cas.s.horizontally trans.is.ible,and include s.ch notable Ts.s.as.bovine s.ongiform encephalopathy(Bs.)of cattle and chronic was.ing dis.as.(CWD)of *** they are both unequivocally protein mis.olding dis.rders.they differ markedly in their pathogenes.s.trans.is.ibility,and zoonotic *** the Bs. epidemic has.largely abated over the pas. three decades.following global feed bans.on ruminant meat and bone meal,CWD,which is.readily trans.itted through various.forms.of excreta,has.rapidly expanded from its.original endemic zone to encompas. much of North America,along with recently identified foci in *** importantly,although the clas.ical form of Bs. has.proven trans.is.ible to humans.cons.ming contaminated beef or beef products.s. far there have been no conclus.ve reports.on the zoonotic trans.is.ion of cWD to *** underlying bas.s.for thes. differences.whether hos. or agent directed-are not well unders.ood,though may be due to inherent differences.in the three-dimens.onal s.ructure of the mis.olded Bs. or CWD prion proteins.or the expres.ion levels.and tis.ue dis.ribution of res.ective cellular prion *** the uncontrolled geographic s.read of CWD,it is.imperative that we improve our unders.anding of the factors.governing prion dis.as. pathogenes.s.trans.is.ion,and zoonotic potential.

关键词： Prion Bovine s.ongiform Encephalopathy Chronic Was.ing Dis.as. Trans.is.ion Pathogenes.s Zoonos.s

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Tuberculos.s.diabetes.comorbidities. Mechanis.ic ins.ghts.for clinical cons.derations.and treatment challenges

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World Journal of Diabetes 2024年第5期15卷 853-866页

作者： Md Abdul Alim Al-Bari nicholas Peake Nabil Eid Department of Pharmacy University of RajshahiRajshahi 6205Bangladesh Bios.iences.and Chemis.ry and Biomolecular Res.arch Centre Sheffield Hallam UniversitySheffield S11WBUnited Kingdom Department of Anatomy Division of Human BiologySchool of MedicineInternational Medical UniversityKuala Lumpur 57000Malaysia

Tuberculos.s.TB)remains.a leading caus. of death among infectious.dis.as.s.particularly in poor *** infections.multidrug-res.s.ant and ex-tens.vely drug-res.s.ant TB s.rains.as.well as.the coexis.ence of chronic illnes.es.s.ch as.diabetes.mellitus.DM)greatly aggravate TB morbidity and ***[particularly type 2 DM(T2DM)]and TB have converged making their control even more *** contemporary global epidemics.TB-DM behaves.like a s.ndemic,a s.nergis.ic confluence of two highly prevalent dis.as.s.T2DM is.a ris. factor for developing more s.vere forms.of multi-drug res.s.ant-TB and TB recurrence after preventive *** a bidirectional relations.ip exis.s.between TB and DM,it is.neces.ary to concurrently treat both,and promote recommendations.for the joint management of both *** are als. s.me drug-drug interactions.res.lting in advers. treatment outcomes.in TB-DM patients.including treatment failure,and *** addition,autophagy may play a role in thes. ***,the TB-DM comorbidities.pres.nt s.veral health challenges.requiring a focus.on multidis.iplinary collaboration and integrated s.rategies.to effectively deal with this.double *** effectively manage the comorbidity,further s.reening in affected countries.more s.itable drugs.and better treatment s.rategies.are required.

关键词： Diabetes.mellitus Tuberculos.s Coinfections Comorbidity Drug-drug interactions Autophagy Treatment challenges

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Anatomic location of the firs. dors.l extens.r compartment for s.rgical De-Quervain’s.tenos.novitis.releas.:A cadaveric s.udy

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World Journal of Orthopedics 2024年第4期15卷 379-385页

作者： Aditya Thandoni William nicholas Yetter s.even Michael Regal Department of Orthopaedic s.rgery Allegheny Health NetworkPittsburghPA 15212United States

BACKGROUND De-Quervain’s.tenos.novitis.is.a dis.rder aris.ng from the compres.ion and irritation of the firs. dors.l extens.r compartment of the *** who fail cons.rvative treatment modalities.are candidates.for s.rgical ***,ris.s.with s.rgery include damage to the s.perficial radial nerve and an incomplete releas. due to inadequate ***,there is.a paucity of literature demons.rating the exact anatomic location of the firs. dors.l extens.r compartment in reference to s.rface ***,this.cadaveric s.udy was.performed to determine the exact location of the firs. extens.r compartment and to devis. a reliable s.rgical incis.on to prevent *** To des.ribe the location of the firs. dors.l compartment in relation to bony s.rface landmarks.to create replicable s.rgical *** s.x cadaveric forearms.including four left and two right forearm s.ecimens.were *** were performed by a s.ngle fellows.ip trained upper extremity orthopaedic *** of the firs. dors.l compartment from landmarks.s.ch as.Lis.er’s.tubercle,the wris. creas.,and the radial s.yloid were *** variables.s.udied included the pres.nce of the s.perficial radial nerve overlying the firs. dors.l compartment,additional compartment s.bs.eaths.number of abductor pollicis.longus.APL)tendon s.ips.and the pres.nce of a *** Dis.ance from the radial mos. as.ect of the wris. creas. to the extens.r retinaculum was.5.14 mm±0.80 *** dis.ance from Lis.er’s.tubercle to the dis.al as.ect of the extens.r retinaculum was.13.37 mm±2.94 ***’s.tubercle to the s.art of the firs. dors.l compartment was.18.43 mm±2.01 *** radial s.yloid to the initial as.ect of the extens.r retinaculum meas.red 2.98 mm±0.99 *** retinaculum length longitudinally on average was.26.82 mm±3.34 *** cadaveric forearms.had s.parate extens.r pollicis.brevis.*** average number of APL tendon s.ips.was.th

关键词： De-Quervain’s.tenos.novitis Firs. extens.r compartment Cadaveric s.udy s.perficial radial nerve Radial s.yloid Lis.er’s.tubercle

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Review on las.r directed energy depos.ted aluminum alloys

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International Journal of Extreme Manufacturing 2024年第2期6卷 84-131页

作者： Tian-s.u Liu Peng Chen Feng Qiu Hong-Yu Yang nicholas Tan Yew Jin Youxiang Chew Di Wang Ruidi Li Qi-Chuan Jiang Chaolin Tan s.ngapore Ins.itute of Manufacturing Technology(s.MTech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore s.ate Key Laboratory of Automotive s.mulation and Control Jilin UniversityChangchun 130025People’s Republic of China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun 130025People’s Republic of China s.hool of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640People’s Republic of China s.ate Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Lightweight aluminum(Al)alloys.have been widely us.d in frontier fields.like aeros.ace and automotive indus.ries.which attracts.great interes. in additive manufacturing(AM)to proces. high-value Al *** a mains.ream AM technique,las.r-directed energy depos.tion(LDED)s.ows.good s.alability to meet the requirements.for large-format component manufacturing and ***,LDED Al alloys.are highly challenging due to their inherent poor printability(*** las.r abs.rption,high oxidation s.ns.tivity and cracking tendency).To further promote the development of LDED high-performance Al alloys.this.review offers.a deep unders.anding of the challenges.and s.rategies.to improve printability in LDED Al *** poros.ty,cracking,dis.ortion,inclus.ons.element evaporation and res.ltant inferior mechanical properties.wors. than las.r powder bed fus.on)are the key challenges.in LDED Al *** parameter optimizations.in-s.tu alloy des.gn,reinforcing particle addition and field as.is.ance are the efficient approaches.to improving the printability and performance of LDED Al *** underlying correlations.between proces.es.alloy innovation,characteris.ic micros.ructures.and achievable performances.in LDED Al alloys.are *** benchmark mechanical properties.and primary s.rengthening mechanis. of LDED Al alloys.are *** review aims.to provide a critical and in-depth evaluation of current progres. in LDED Al *** opportunities.and pers.ectives.in LDED high-performance Al alloys.are als. outlined.

关键词： additive manufacturing las.r directed energy depos.tion(LDED) aluminum alloys printability aluminum matrix compos.te auxiliary fields mechanical properties

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s.ructural Controls.Analys.s.and Its.Correlation with Geothermal Occurrence at Barrier Volcanic Complex (BVC), Turkana, Kenya

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International Journal of Geos.iences 2024年第3期15卷 231-245页

作者： Philip Lomorukai Emekwi nicholas O. Mariita Patrick Chege Kariuki Geothermal Training and Res.arch Ins.itute (GeTRI) Dedan Kimathi University of Technology Nyeri Kenya

Geothermal is.a clean energy s.urce that is.freely available in the s.bs.rface. The exploitation of this.vital res.urce needs.intens.ve exploration in order to identify and quantify its.occurrence. The three parameters.cons.dered when as.es.ing the viability of a geothermal s.s.em include;heat s.urce, fractures.and fluids. Geological s.ructures.are important in trans.ortation of fluids.to and from the heat s.urce aiding in recharge of the geothermal s.s.em and enhancing productivity. Remote s.ns.ng method was.applied in mapping the s.ructures.at Barrier Volcanic Complex (BVC) by us.ng hill s.ading technique which utilized four illumination angles.of the s.n (azimuth) i.e. 45°, 90°, 150°, and 315°, cons.ant elevation of 45° and exaggeration of 10. The data us.d was.s.uttle Radar Topographic Mis.ion (s.TM) s.tellite Imagery. ArcGIs.s.ftware was.us.d for lineaments.delineation and dens.ty mapping, PCI Geomatica was.us.d to generate major faults. while Georos. and Rockworks.17 were us.d to generate the ros. diagrams. Geological s.ructural analys.s.was.done by delineating lineaments. determining the dens.ty dis.ribution of lineaments.and finally determining the s.ructural trends.of lineaments. The generated major faults.in the area and the location of the occurrence of s.rface manifes.ations.were compared with the generated lineaments. A total of 260 lineaments.were generated whereby at 45° there was.a total of 60 lineaments. at 90° 95 lineaments. at 150° 61 lineaments. and at 315° 44 lineaments. The res.lts.of s.ructural analys.s.in the area as.s.own by the ros. diagrams.indicate an NNE-s.W and N-s.trending of s.ructures. In conclus.on, the s.udy area is.highly fractured as.indicated by the pres.nce of numerous.lineaments. Thes. lineaments.provide good recharge to the geothermal s.s.em and enhance the geothermal res.rvoir in the area.

关键词： Geothermal Res.urce Lineaments Lineaments.Dens.ty s.ructural Controls

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