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Roguetheoryofsmellgetsaboost

1.Acontroversialtheoryofhowwesmell,whichclaimsthatourfinesenseofodourdependsonquantummechanics,hasbeengiventhethumbsupbyateamofphysicists.

2.CalculationsbyresearchersatUniversityCollegeLondon(UCL)showthattheideathatwesmellodourmoleculesbysensingtheirmolecularvibrationsmakessenseintermsofthephysicsinvolved.

3.That'sstillsomewayfromprovingthatthetheory,proposedinthemid-1990sbybiophysicistLucaTurin,iscorrect.Butitshouldmakeotherscientiststaketheideamoreseriously.

4."Thisisabigstepforward,"saysTurin,whohasnowsetuphisownperfumecompanyFlexitralinVirginia.Hesaysthatsincehepublishedhistheory,"ithasbeenignoredratherthancriticized."

5.Mostscientistshaveassumedthatoursenseofsmelldependsonreceptorsinthenosedetectingtheshapeofincomingmolecules,whichtriggersasignaltothebrain.Thismolecular'lockandkey'processisthoughttoliebehindawiderangeofthebody'sdetectionsystems:itishowsomepartsoftheimmunesystemrecogniseinvaders,forexample,andhowthetonguerecognizessometastes.

6.ButTurinarguedthatsmelldoesn'tseemtofitthispictureverywell.Moleculesthatlookalmostidenticalcansmellverydifferent—suchasalcohols,whichsmelllikespirits,andthiols,whichsmelllikerotteneggs.Andmoleculeswithverydifferentstructurescansmellsimilar.Moststrikingly,somemoleculescansmelldifferent—toanimals,ifnotnecessarilytohumans—simplybecausetheycontaindifferentisotopes(atomsthatarechemicallyidenticalbuthaveadifferentmass).

7.Turin'sexplanationforthesesmellyfactsinvokestheideathatthesmellsignalinolfactoryreceptorproteinsistriggerednotbyanodourmolecule'sshape,butbyitsvibrations,whichcanenourageanelectrontojumpbetweentwopartsofthereceptorinaquantum-mechanicalprocesscalledtunnelling.Thiselectronmovementcouldinitiatethesmellsignalbeingsenttothebrain.

8.Thiswouldexplainwhyisotopescansmelldifferent:theirvibrationfrequenciesarechangediftheatomsareheavier.Turin'smechanism,saysMarshallStonehamoftheUCLteam,ismorelikeswipe-cardidentificationthanakeyfittingalock.

9.Vibration-assistedelectrontunnellingcanundoubtedlyoccur—itisusedinanexperimentaltechniqueformeasuringmolecularvibrations."Thequestioniswhetherthisispossibleinthenose,"saysStoneham'scolleague,AndrewHorsfield.

10.StonehamsaysthatwhenhefirstheardaboutTurin'sidea,whileTurinwashimselfbasedatUCL,"Ididn'tbelieveit".But,headds,"becauseitwasaninterestingidea,IthoughtIshouldproveitcouldn'twork.Ididsomesimplecalculations,andonlythenbegantofeelLucacouldberight."NowStonehamandhisco-workershavedonethejobmorethoroughly,inapapersoontobepublishedinPhysicalReviewLetters.

11.TheUCLteamcalculatedtheratesofelectronhoppinginanosereceptorthathasanodorantmoleculeboundtoit.Thisratedependsonvariouspropertiesofthebiomolecularsystemthatarenotknown,buttheresearcherscouldestimatetheseparametersbasedontypicalvaluesformoleculesofthissort.

12.Thekeyissueiswhetherthehoppingratewiththeodorantinplaceissignificantlygreaterthanthatwithoutit.Thecalculationsshowthatitis—whichmeansthatodouridentificationinthiswayseemstheoreticallypossible.

13.ButHorsfieldstressesthatthat'sdifferentfromaproofofTurin'sidea."Sofarthingslookplausible,butweneedproperexperimentalverification.We'rebeginningtothinkaboutwhatexperimentscouldbeperformed."

14.Meanwhile,Turinispressingaheadwithhishypothesis."AtFlexitralwehavebeendesigningodorantsexclusivelyonthebasisoftheircomputedvibrations,"hesays."Oursuccessrateatodorantdiscoveryistwoordersofmagnitudebetterthanthecompetition."Attheveryleast,heisputtinghismoneywherehisnoseis.

Questions5-9

Completethesentencesbelowwithwordsfromthepassage.UseNOMORETHANTHREEWORDSforeachanswer.

5.Thehypothesisthatwesmellbysensingthemolecularvibrationwasmadeby______.

6.Turin'scompanyisbasedin______.

7.Mostscientistsbelievedthatournoseworksinthesamewayasour______.

8.Differentisotopescansmelldifferentwhen______weighdifferently.

9.AccordingtoAudrewHorsfield,itisstilltobeprovedthat______couldreallyoccurinhumannose.

SectionC

WhatalovelyplaceXeroxistoworkKimMoloney,aclientservicesexecutive,can’tsayenoughnicethingsaboutheremployer.‘It’saveryspecialenvironment,’shesays.‘PeopledescribeXeroxasafamilyandIwasamazedatthenumberofpeoplewhohaveworkedhereforsolong.’It’stemptingtotakeMoloney’scommentswithapinchofsalt,especiallyconsideringthatwhenyou’vebeenworkingsomewhereforonlytwoyears,asshehasatXerox,everyoneseemsoldandestablished.Butthere’struthbehindherenthusiasm.

TakeCarolePalmer,thegroupresourcesdirector.ShejoinedXeroxin1978asatempandhasbeeninherpresentroleforsevenyears.‘Xeroxhasbeengoodtomeovertheyears,’shesays.‘Ithassupportedmethroughqualifications…andlastyearItookpartinthevice-presidentincumbentprogram.’HumanresourcesistakenseriouslyatXerox,Palmersays,andthecompanyhasapolicyofpromotingfromwithin(whichwouldexplainMoloney’samazementathercolleagues’longevity).ThecompanytakesononlyfifteentotwentygraduateseachyearandMoloneywaspartofanintakewhojoinedhavingalreadyacquiredacoupleofyears’workexperience.ShestartedasaprojectmanagerforXeroxGlobalServicesbeforemovingintosales.Nowherresponsibilityisto‘growandmaintaincustomerrelationships’.

MoloneyisbasedattheheadofficeinUxbridge.‘It’sgreatintermsofworkingenvironment,’shesays.‘We’vejustgotanewproviderinthecanteenand…wehavebrainstormingroomsandbreakoutareas.’MuchofMoloney’sroleisvisitingclients,soshedoesn’thaveapermanentdeskatheadoffice.‘I’mahot-desker,whichisgoodbecauseyougettositwithdifferentpeopleinthehot-deskareas.Andyou’regivenaplacetostoreyourthings.’Headofficestaffnumbersbetween1,200and1,500people,Palmersays.ThecompanyhasfourothermainofficesintheUK.Thenatureoftheorganization,whichencompassessalesandmarketing,globalservices(thebiggestdivision),developingmarkets,researchanddevelopmentandmanufacturing,meansthattheopportunitiesatthecompanyvaryfromserviceengineerstosalesrolesandconsultants.

Perksincludeafinal-salarypensionschemeandvariousdiscountschemes.Therewardandrecognitionschemeisalittledifferent,andrathernice:‘Eachmanagerhasabudgeteveryyeartorecognizeandrewardstaff,’Palmersays.‘Itcanbeintheformofamealfortwo,orabottleofwine.Itcanbeupto￡1,000.There’stherecognition,andthenthere’sputtingmoneybehindit.’Moloney,however,likesthenon-cashrewards.‘Xeroxtakescareofallitsstaffbutitalsorecognizesthepeoplewhoputintheaddedeffort,’shesays.‘Itoffersonce-in-a-lifetimeincentivetrips,andrecentlyIorganizedasailingtripformyteam.’

Theideaofworkingabroadwiththecompanyappealstoher,andshesaysthathercareergoalistobepartoftheseniormanagementteam.Here’sanotheremployee,itwouldseem,whoisinitforthelonghaul.

()1.Thejournalistofthisarticlethinksthat.

A.staffatXeroxarenottellingthetruthabutthecompany.

B.Xeroxoffersgreatbenefitstostaff.

C.Xeroxisthebestcompanyintheworld.

D.Xeroxhasthebestworkingenvironment.

()2.Thecompanytendstofinditsnewmanager.

A.onlyformgraduatesB.ontrainingcourses

C.fromexistingstaffD.fromjobmarkets

()3.Whatdoesthephrase“totakeon”inthesentence“Thecompanytakesononlyfifteentotwentygraduateseachyearand…”ofthesecondparagraphmean?.

A.TotrainB.Toemploy

C.TointerviewD.Tomaintain(A)

()4.Aswellasrecognizingitsstaffthroughpromotion,Xerox.

A.givescashbonuses

B.givesunpaidleavetotaketripsofalifetime.

C.providesanumberofperks.

D.provideshugeend-of-yearbonuses.

()5.OnecommonfeatureofXeroxstaffisthattheytend.

A.toworkhardB.togetpromoted

C.worklongerhourseachdayD.nottochangeemployer

Investingthousandsofpoundsintherecruitmentandtrainingofeachnewgraduaterecruitmaybejustthebeginning.Choosingthewrongcandidatemayleaveanorganisationpayingforyearstocome.

Fewcompanieswillhaveescapedallofthefollowingfailures:peoplewhopanicatthefirstsightofstress;thosewithlongimpressivequalificationswhoseemincapableoflearning;hypochondriacswhoseabsenteerecordbecomesastonishing;andtheunstablepersonlaterdiscoveredtobeathieforworse.

Lessdramatic,butjustasmuchaproblem,isthepersonwhosimplydoesnotcomeuptoexpectations,whodoesnotquitedeliver;whoneverbecomesahigh-flierorevenasteadyperformer;theemployeewithafinefuturebehindthem.

Thefirstpointtobearinmindattherecruitmentstageisthatpeopledon’tchange.Intelligencelevelsdeclinemodestly,butchangelittleovertheirworkinglife.Thesameistrueofabilities,suchaslearninglanguagesandhandlingnumbers.

Mostpeopleliketothinkthatpersonalitycanchange,particularlythemorenegativefeaturessuchasanxiety,lowesteem,impulsivenessoralackofemotionalwarmth.Butdatacollectedover50yearsgivesaclearmessage:stillstableafteralltheseyears.Extrovertsbecomeslightlylessextroverted;theacutelyshyappearalittlelessso,butthefundamentalsremainmuchthesame.Personalcrisescanaffectthewaywecopewiththings:wemighttakeupordropdrink,drugs,religionorrelaxationtechniques,whichcanbehaveprettydramaticeffects.Skillscanbeimproved,andnewonesintroduced,butatratherdifferentrates.Peoplecanbegroomedforajob.Justaspoliticiansarecarefullyrepackagedthroughdress,hairstyleandspeechspecialists,sopeoplecanbesentontrainingcourses,diplomasorexperimentalweekends.Butthereisacosttoallthiswhichmaybemorethanthepriceofthecourse.Bettertoselectforwhatyouactuallyseeratherthanattempttochangeit.

()1.Thepurposeofthispassageistogivemanagerstheadvicethat.

A.Employersshouldselectcandidatesfortheirpotential.

B.Employersshouldselectcandidatesforwhattheyareratherthanfortheirpotential.

C.Employersshouldselectthenewlygraduatedandsendthemontrainingcourses,diplomasorexperimentalweekends.

D.Employersshouldselectexperiencedcandidatestoavoidspendingthousandsofpoundsintraining.

()2.Accordingtothepassage,whichofthefollowingstatementsistrue?.

A.Absolutely,Peopledon’tchangeduringtheirworkinglives.

B.Generally,peoplechangetoalargeextentduringtheirworkinglives.

C.Fundamentally,peoplestaythesameduringtheirworkinglives.

D.Normally,peopledon’tchangeatallduringtheirworkinglives.

()3.Whatdoesafinefuturebehindthem(line3ofparagraph3)means?.

A.Somepeoplewillcertainlyhaveapromisingfuturethoughtheyarenotverycompetentintheirpresentwork.

B.Somepeopledon’thaveanypotentialfortheirworkthoughtheyareemployed.

C.Somepeoplecanhaveabrightfuturethoughtheycan’tdotheirworkwell.

D.Somepeoplehavepotentialwhentheyareemployed,butneverrealizethatpotential.

()4.Accordingtothepassage,people’sbasicabilitieslikelanguagelearningandnumeracy.

A.changelittleovertheirworkinglife.

B.neverchangeovertheirworkinglife.

C.changefundamentallyovertheirworkinglife.

D.changeprofoundlyovertheirworkinglife.

()5.Theworddeliver(line2ofparagraph3)means.

A.totakegoodstotheplacesorpeopletheyareaddressedto

B.togiveaspeech

C.todowhatyoupromisedtodo

D.tohelpawomantogivebirthtoababy.

InItaly,whenpeopletouchtheireyes,itrepresents:

Ateachofits20buildingsatits200-acrecampusinRaleigh,NorthCarolina,SASInstituteprovidescoffeebreakroomsstockedwithfreesoda,freshfruit,M&Msandpastries.