5 results for “softness”

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Research ArticleOpen accessIn the keywordsDesign and Modeling of a New Tactile Sensor Based on Membrane DeflectionAli Tavakoli Golpaygani, Siamak Najarian, Goldis Darb EmamiehThe designed sensor can detect 2D surface texture image, contact-force, and softness of the sensed object. It consists of a chamber for pneumatic actuation and a membrane with a mesa structure. The sensing mechanism is the contact deformation effect of a membrane. Determination of the contact force and softness of sensed object is based on the amount and variations of … …American Journal of Applied Sciences, Vol. 4, Issue 10 · 31 Oct 2007 · 6,786 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsA Novel Tactile Force Probe for Tissue Stiffness ClassificationBehafarid Darvish, Siamak Najarian, Elham Shirzad, Roozbeh KhodambashiIn this study, we have proposed a new type of tactile sensor that is capable of detecting the stiffness of soft objects. The sensor consists of a brass cylinder with an axial bore. An iron core can easily move inside the bore. Three peripheral bobbins were machined in the cylinder around which three coils have been wound. One of the … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,286 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsHydrophobic, Polar and Hydrogen Bonding Based Drug-Receptor Interaction of TetrahydroimidazobenzodiazepinonesV.K. Sahu, A.K.R. Khan, R.K. Singh, P.P. SinghAnti-HIV drug discovery has been increasingly focusing on HIV-1-RT (reverse transcriptase) as a potential therapeutic target. Tetrahydroimidazobenzodiazepinone (TIBO) belongs to non-nucleoside group of reverse transcriptase inhibitors (NNRTIs). A computational chemistry study has been performed on a series of tetrahydroimidazo-benzodiazepinones as HIV-1-NNRT inhibitors. Problem statement: In order to search out new drug of desired activity from the lead compounds, there was … …American Journal of Immunology, Vol. 4, Issue 3 · 30 Sep 2008 · 8,837 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsFabrication and Testing of a Medical Surgical Instrument Capable of Detecting Simulated Embedded LumpsJavad Dargahi, Siamak Najarian, Reza Ramezanifard, Farhad Tabatabai GhomsheA novel endoscopic grasper is being fabricated and tested. This grasper can be used in detecting lumps or tumors in biological tissues. The detailed fabrication process of the tactile sensor has been discussed. Custom-made sensors were integrated with the jaws of the endoscopic grasper and objects with known tactile features were tested by the designed grasper. Different experiments were performed … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,999 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDFT Based Electrophilicity Index and QSAR study of Phenols as Anti Leukaemia AgentFarhan A. Pasha, Hemant K. Srivastava, Yakoob Beg, Pashupati P. singhDensity Functional reactivity indices based QSAR study of 49 phenol derivatives is presented in this paper. Two different models to describe the anti leukaemia activity of phenols have been made. First QSAR model includes molecular properties like molecular weight (Mw), hardness (η), chemical potential (μ), total energy, and electrophilicity index (ω). Various regression models have been made and regression quality … …American Journal of Immunology, Vol. 2, Issue 1 · 31 Mar 2006 · 7,587 accessesView PDF Cite