Characterization of Tongue Shape

Mathematical techniques are described for analyzing tongue shapes obtained with ultrasound images. The surface of the mid-sagittal section of the tongue was approximated by discrete points. In turn, these points were used to approximate position, slope and curvature of the tongue surface at a fixed time during speech. Two approaches were employed. The first method involved the use of finite difference approximations to derivatives of the function of tongue position. The second utilized a curve fit. Both methods were examined for reliability. Results of these analyses on a simple, single speech sound are discussed.

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Automated Characterization of Atheromatous Plaque in Intravascular Ultrasound Images Using Neuro Fuzzy Classifier

International Journal of Electronics and Telecommunications ◽

10.2478/v10177-012-0058-7 ◽

2012 ◽

Vol 58 (4) ◽

pp. 425-431 ◽

Cited By ~ 3

Author(s):

D. Selvathi ◽

N. Emimal ◽

Henry Selvaraj

Keyword(s):

Intravascular Ultrasound ◽

Human Error ◽

Human Life ◽

Classification Performance ◽

Atheromatous Plaque ◽

Ultrasound Images ◽

Fuzzy Classifier ◽

Neuro Fuzzy ◽

Calcified Tissues

Abstract The medical imaging field has grown significantly in recent years and demands high accuracy since it deals with human life. The idea is to reduce human error as much as possible by assisting physicians and radiologists with some automatic techniques. The use of artificial intelligent techniques has shown great potential in this field. Hence, in this paper the neuro fuzzy classifier is applied for the automated characterization of atheromatous plaque to identify the fibrotic, lipidic and calcified tissues in Intravascular Ultrasound images (IVUS) which is designed using sixteen inputs, corresponds to sixteen pixels of instantaneous scanning matrix, one output that tells whether the pixel under consideration is Fibrotic, Lipidic, Calcified or Normal pixel. The classification performance was evaluated in terms of sensitivity, specificity and accuracy and the results confirmed that the proposed system has potential in detecting the respective plaque with the average accuracy of 98.9%.

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Synthesis and Spectral Characterization of Derivatives of Benzotriazole and Piperidine

Journal of Chemistry and Chemical Sciences ◽

10.29055/jccs/583 ◽

2018 ◽

Vol 8 (2) ◽

pp. 278-287

Author(s):

Selvarathy Grace P ◽

Ravindran Durainayagam B ◽

Pon Matheswari P.

Keyword(s):

Spectral Characterization ◽

Derivatives Of

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The preparation and characterization of chalcogenide derivatives of hemerythrin

10.31274/rtd-180816-5802 ◽

1985 ◽

Author(s):

Gudrun Susanne Lukat

Keyword(s):

Derivatives Of

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Structural Characterization of Two Novel Oxidative Derivatives of Cyclosporine Generated By a Chemical Method

Clinical Biochemistry ◽

10.1016/s0009-9120(98)00014-9 ◽

1998 ◽

Vol 31 (3) ◽

pp. 173-180 ◽

Cited By ~ 3

Author(s):

WingT Liu ◽

Kirk Marat ◽

Ying Ren ◽

RonaldT Eng ◽

PuiY Wong

Keyword(s):

Structural Characterization ◽

Chemical Method ◽

Derivatives Of

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Identification of pigments in artworks by inverse tangent derivative of spectrum and a new filtering method

Heritage Science ◽

10.1186/s40494-020-00438-4 ◽

2020 ◽

Vol 8 (1) ◽

Author(s):

F. Fazlali ◽

S. Gorji Kandi

Keyword(s):

Reflectance Spectrum ◽

Practical Method ◽

Chemical Methods ◽

Munk Function ◽

Absorption Of Light ◽

Spectrophotometric Data ◽

First Time ◽

Non Destructive ◽

Derivatives Of

Abstract Employing an economical and non-destructive method for identifying pigments utilized in artworks is a significant aspect for preserving their antiquity value. One of the non-destructive methods for this purpose is spectrophotometry, which is based on the selected absorption of light. Mathematical descriptive methods such as derivatives of the reflectance spectrum, the Kubelka–Munk function and logarithm have been employed for the characterization of the peak features corresponding to the spectrophotometric data. In the present study, the mentioned mathematical descriptive methods were investigated with the aim to characterize the constituents of an Iranian artwork but were not efficient for the samples. Therefore, inverse tangent derivative equation was developed on spectral data for the first time, providing considerable details in the profile of reflectance curves. In the next part, to have a simpler and more practical method it was suggested to use filters made up of pure pigments. By using these filters and placing them on the samples, imaging was done. Then, images of samples with and without filter were evaluated and pure pigments were distinguished. The mentioned methods were also used to identify pigments in a modern Iranian painting specimen. The results confirmed these methods with reliable answers indicating that physical methods (alongside chemical methods) can also be effective in determining the types of pigments.

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ChemInform Abstract: Mass Spectrometric Studies on the Fragmentation and Structural Characterization of Aminoacyl Derivatives of Kanamycin A.

ChemInform ◽

10.1002/chin.199902228 ◽

2010 ◽

Vol 30 (2) ◽

pp. no-no

Author(s):

S. I. KOTRETSOU ◽

V. CONSTANTINOU-KOKOTOU

Keyword(s):

Structural Characterization ◽

Mass Spectrometric ◽

Derivatives Of

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Carbohydrate binding activities of Bradyrhizobium japonicum. II. Isolation and characterization of a galactose-specific lectin.

The Journal of Cell Biology ◽

10.1083/jcb.111.4.1639 ◽

1990 ◽

Vol 111 (4) ◽

pp. 1639-1643 ◽

Cited By ~ 25

Author(s):

S C Ho ◽

M Schindler ◽

J L Wang

Keyword(s):

Isoelectric Focusing ◽

Bradyrhizobium Japonicum ◽

Affinity Column ◽

Carbohydrate Binding ◽

Binding Affinities ◽

Isolation And Characterization ◽

Relative Binding ◽

Mannose Derivatives ◽

Derivatives Of

Extracts of Bradyrhizobium japonicum were fractionated on Sepharose columns covalently derivatized with lactose. Elution of the material that was specifically bound to the affinity column with lactose yielded a protein of Mr approximately 38,000. Isoelectric focusing of this sample yielded two spots with pI values of 6.4 and 6.8. This protein specifically bound to galactose-containing glycoconjugates, but did not bind either to glucose or mannose. Derivatives of galactose at the C-2 position showed much weaker binding; there was an 18-fold difference in the relative binding affinities of galactose versus N-acetyl-D-galactosamine. These results indicate that we have purified a newly identified carbohydrate-binding protein from Bradyrhizobium japonicum, that can exquisitely distinguish galactose from its derivatives at the C-2 position.

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