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DT Middle East and Africa

Scientists have created the world’ssmallestelectricmotor, made from a single molecule. The tiny gadget is expected to lead to new devices that can be used in medicine and engineer- ing. The microscopic motor is just one nanometre across, about 60,000 times smaller than the width of a human hair. Team leader Dr Charles Sykes, from Tufts University in Boston,US,said:“Therehasbeen significant progress in the con- struction of molecular motors poweredbylightandbychemical reactions, but this is the first time that electrically-driven molecu- lar motors have been demon- strated, despite a few theoretical proposals. “We have been able to show thatyoucanprovideelectricityto a single molecule and get it to do something that is not just ran- dom.” The scientists, who describe their achievement in the journal Nature Nanotechnology, used a state-of-the-art low temperature scanning tunnelling micro- scope, which uses electrons in- stead of light to “see” molecules. The microscope’s metal tip providedanelectricalchargetoa butyl methyl sulphide molecule placed on a conductive copper surface. This caused compass needle- like “arms” of carbon and hydro- genatomstorotatearoundacen- tral axis. Direction and speed were af- fected by temperature. The sci- entists found that a freezing mi- nus 268C proved ideal for track- ing the motor’s motion. The mo- tor span much faster at higher temperatures, making it difficult to observe and control. Dr Sykes added: “Once we haveabettergrasponthetemper- atures necessary to make these motors function, there could be real-world application in some sensing and medical devices which involve tiny pipes. Friction of the fluid against the pipe walls increases at these small scales, and covering the wall with motors could help drive fluids along.” DT DENTALTRIBUNE Middle East & Africa Edition News 3 DENTOFLEX takes you to BRAZIL! Dentoflex Middle East | Jafza View Lob 19 Office 1301 | Dubai - U.A.E - P.O. Box 261901 Tel: +971 (0) 48855404 Fax:+971 (0) 48855405 | www.dentoflex.com.br / education@dentoflex.com.br NEXT GROUP JANUARY - 2012 Implant Course Package All Trip Includes: Course at São Paulo City: - Air Tickets (MENA Countries - São Paulo - MENA Countries)* economy class - Airport Pickup and Drop-off + City Transfers - Hotel (Double Room) with Breakfest* tourist class - Lunchs Tour to Rio de Janeiro City: - Air Tickets (São Paulo - Rio - São Paulo) - Airport Pickup and Drop-off + City Transfers - Hotel (Double Room) with Breakfest - 4 Days Tour in Rio de Janeiro- Tour Guide - Tour Visit (One Ticket Included per person) to: » Cristo Redentor Estatue (The 7th Wonders of the World) » Maracanã Soccer Stadium (Brazilian Biggest Stadium) » Sugar Loaf (With Cable Car) » Copacabana Beach Our Offer for Trip Course Trip Includes: 1 - Mix Surgical Set (Conical and Cylindrical) 30 - Dental Implant (Cylindrical or Conical) 30 - Straight Abutment (Fixed or Cemented) Course at São Paulo City: - 3 Days Courses (intensive 20 hours) - Dentoflex Company and Plant tour - Implant Lectures + Hands on Training and Surgeries - Live Surgery with live broadcast - Visit to Brazilian Dental Association - Certificate Ceremony with Gala Dinner - Airport Pickup and Drop-off + City Transfers - Hotel (Double Room) with Breakfest* tourist class USD 7,500 JANUARY - NENEXEXT GROXTEEXNNE 2012 OUP I ludes l City: Ai Ti k t (MENA Count Airport Pickup and Drop ou - Airport Pickup and Drop aulo - Rio - São P- Air Tickets (São P Tour to Rio de Janeiro City: unchs- L - Hotel (Double Room) with Breakfest* tourist class - Airport Pickup and Drop - Air Tickets (MENA Count aulo City:PCourse at São P All Trip Includes Imp ourseCImplant C aulo - MENA Countries ransfers P ke ckagek e ransfersoff + City TTransfers-- Airport Pickup and Drop aulo)aulo - Rio - São P Tour to Rio de Janeiro City: - Hotel (Double Room) with Breakfest* tourist class ransfersoff + City TTransfersoff + City TTransfersp-p aulo - MENA Countriestries - São Ptries - São P e Package TripTrip Si SMi Su1 Mix Surgical Set (Conical and Cylindrical)1 - Mix Surgical Set (Conical and Cylindrical)1 Dental Implant (Cylindrical or Conical)30 - Dental Implant (Cylindrical or Conical) 30 - Straight Abutment (F - Live Surgery with live broadcast - Implant L - Dentoflex Company and Plant tour - 3 Days Courses (intensive 20 hours) Course at São Paulo City: 30 - Straight Abutment (F 30 - Dental Implant (Cylindrical or Conical)l ss) y 1 - Mix Surgical Set (Conical and Cylindrical) Tr pTr pTTrip Inc r OOu s)* economy class l S t (C nical and Cylindricai l S t (Conical and Cylindrical)i l Set (Conical and Cylindricai al Set (Conical yical Set (Con i l)l C i l)d i l Conical)C li d i l or Conical)l t (C lindrical or Conical)l Implant (Cylindrical or Conical)al Implant ( y d C d)ixed or Cemented) - Live Surgery with live broadcast raining and Surgeriesectures + Hands on T- Implant L - Dentoflex Company and Plant tour - 3 Days Courses (intensive 20 hours) Course at São Paulo City: ixed or Cemented)ght Abutment (Fght Abutment (F al Implant (Cylindrical or Conical) rgical Set (Conical and Cylindrical)urgical Set (Conical and Cylindrical)urgical Set (Conical and Cylindrical)gurgical Set (Conical and Cylindrical) Trip Includes: Offer for Trip Cou al)al)) )))))) )) al) raining and Surgeries ) ) al) u » Copacabana Beach oaf (With Cable Car)» Sugar L » Maracanã Soccer Stadium (Brazilian Biggest Stadium) » Cristo Redentor Estatue (The 7th W our Visit (One Ticket Included per person) to:- TTour Visit (One Ticket Included per person) to: our in Rio de Ja- 4 Days TTour in Rio de Janeiro - Hotel (Double Room) with Breakfest - Airport Pickup and Drop oaf (With Cable Car) » Maracanã Soccer Stadium (Brazilian Biggest Stadium) orld)onders of the WWorld)(The 7th WWonders of the W our Visit (One Ticket Included per person) to: our Guide- TTour Guideour in Rio de Janeiro - Hotel (Double Room) with Breakfest off + City T- Airport Pickup and Drop - Hotel (Double Room) with Breakfest* tourist class - Airport Pickup and Drop - Certificate Ceremony with Gala Dinner - Visit to Brazilian Dental Association - Live Surgery with live broadcast - Hotel (Double Room) with Breakfest* tourist class ransfersoff + City TTransfers-- Airport Pickup and Drop - Certificate Ceremony with Gala Dinner - Visit to Brazilian Dental Association - Live Surgery with live broadcast USD 7,500 - Hotel (Double Room) with Breakfest* tourist class ransfers USD 7,500 De 55404(0) 488el: +TTel: +971 Eastx MiddlDentofle .dentoflex.com.br / education@dentoflex.com.br| www(0) 48855405ax:+971F 1301 | Dubai - Uob 19 Office| Jafza View L @dentoflex.com.br@dentoflex.com.br . dentoflex.com.br / education@dentoflex.com.br b i U A OOOE - PPPPPP.OUU301 | Dubai - U 0190161901261901261901Box 26 bbrm brfl x com.brtoflex.com.brntoflex.com.brnt .c .bomco.cntoflex.com.br BoxBo Motor created from single molecule AD Incompetent dentists exposed by undercover study In a study of 20 practices – ten NHS and ten private – a total of 11 visits were rated ‘poor’ or ‘very poor’ overall. Five visits lasted less than ten minutes, with two dentists spending just five minutes with their new patients. Andonfivevisits,X-rayswere not offered, which should be standard practice for a new pa- tient, unless there are health or other reasons that preclude it, a spokesman for Which? said. Checks on the soft tissue in the mouth, important to screen for oral cancers, were reported on only five of the visits. Just three of the 20 dentists were rated ‘good’ and none ‘ex- cellent’. The average length of the NHS visits was 11 minutes, a timescale that experts said was ‘nearimpossible’foranadequate initial visit. Which? is sharing its audio- taped findings with the dental in- dustry’s two regulators – the General Dental Council and the Care Quality Commission. ‘In an industry that has not one but two regulators, this level of incompetence is unaccept- able. Patients could be left with permanent problems that could have been easily avoided,’ said Which? executive director Richard Lloyd.