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      • KCI등재후보

        Assessment of Real World On-Road Vehicle Emissions under Dynamic Urban Traffic Conditions in Delhi

        Anuradha Shukla,Masood Alam 서울시립대학교 도시과학연구원 2010 도시과학국제저널 Vol.14 No.2

        Urban transport plays an important role in city development and is one of the major sources of environmental pollution. With a view to understand the relationship between the vehicle emissions and traffic control measures, this paper intends to evaluate the relationship between traffic flow and vehicle emissions using the advanced portable emission measurement system, OEM-2100. Real world on-road data collection of emissions for NOX HC, CO and CO2 along with engine parameters such as speed was collected and evaluated during acceleration, deceleration, cruising, and idling under dynamic urban traffic conditions in Delhi. The relationship between vehicle emissions and a commonly used traffic measure, control delay, was investigated. Results showed that emissions were episodic in nature and high emissions rates occurred during acceleration, while vehicle emissions were low when the vehicle was idling. Further emission rates of NOX, HC, CO, and CO2 during delay events were significantly higher than during non-delay events.

      • KCI등재

        Mental nerve paresthesia secondary to initiation of endodontic therapy: a case report

        Syed Mukhtar-Un- Nisar Andrabi,Sharique Alam,Afaf Zia,Masood Hasan Khan,Ashok Kumar 대한치과보존학회 2014 Restorative Dentistry & Endodontics Vol.39 No.3

        Whenever endodontic therapy is performed on mandibular posterior teeth, damage to the inferior alveolar nerve or any of its branches is possible. Acute periapical infection in mandibular posterior teeth may also sometimes disturb the normal functioning of the inferior alveolar nerve. The most common clinical manifestation of these insults is the paresthesia of the inferior alveolar nerve or mental nerve paresthesia. Paresthesia usually manifests as burning, prickling, tingling, numbness, itching or any deviation from normal sensation. Altered sensation and pain in the involved areas may interfere with speaking, eating, drinking, shaving, tooth brushing and other events of social interaction which will have a disturbing impact on the patient. Paresthesia can be short term, long term or even permanent. The duration of the paresthesia depends upon the extent of the nerve damage or persistence of the etiology. Permanent paresthesia is the result of nerve trunk laceration or actual total nerve damage. Paresthesia must be treated as soon as diagnosed to have better treatment outcomes. The present paper describes a case of mental nerve paresthesia arising after the start of the endodontic therapy in left mandibular first molar which was managed successfully by conservative treatment.

      • KCI등재

        Synthesis and characterization of Se doped polyaniline

        Shumaila,G.B.V.S. Lakshmi,Masood Alam,Azher M. Siddiqui,M. Zulfequar,M. Husain 한국물리학회 2011 Current Applied Physics Vol.11 No.2

        Present paper reports the synthesis and electrical, morphological, thermal, structural and optical characterization of polyaniline doped with Selenium. Polyaniline was synthesized by chemical oxidation using ammonium peroxodisulphate as an oxidizing agent. This was doped with different concentrations of Selenium. DC conductivity measurements on the polymer have been carried out in the temperature range 300―450 K. The results show increase in the conductivity by three orders of magnitude after doping. Scanning Electron microscopy (SEM) has also been carried out for surface morphology studies. Thermal and structural properties are also studied by DSC and FTIR spectroscopy. DSC gives information about T_g and T_c. UV―Vis spectroscopy is used to study the optical properties. UV―Vis studies which reveal that the band gap decreases on increasing the concentration of dopant.

      • KCI등재

        Mental nerve paresthesia secondary to initiation of endodontic therapy: a case report

        Andrabi, Syed Mukhtar-Un-Nisar,Alam, Sharique,Zia, Afaf,Khan, Masood Hasan,Kumar, Ashok The Korean Academy of Conservative Dentistry 2014 Restorative Dentistry & Endodontics Vol.39 No.3

        Whenever endodontic therapy is performed on mandibular posterior teeth, damage to the inferior alveolar nerve or any of its branches is possible. Acute periapical infection in mandibular posterior teeth may also sometimes disturb the normal functioning of the inferior alveolar nerve. The most common clinical manifestation of these insults is the paresthesia of the inferior alveolar nerve or mental nerve paresthesia. Paresthesia usually manifests as burning, prickling, tingling, numbness, itching or any deviation from normal sensation. Altered sensation and pain in the involved areas may interfere with speaking, eating, drinking, shaving, tooth brushing and other events of social interaction which will have a disturbing impact on the patient. Paresthesia can be short term, long term or even permanent. The duration of the paresthesia depends upon the extent of the nerve damage or persistence of the etiology. Permanent paresthesia is the result of nerve trunk laceration or actual total nerve damage. Paresthesia must be treated as soon as diagnosed to have better treatment outcomes. The present paper describes a case of mental nerve paresthesia arising after the start of the endodontic therapy in left mandibular first molar which was managed successfully by conservative treatment.

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