نتایج جستجو برای: savitzky

تعداد نتایج: 317  

Journal: :Food chemistry 2016
Gean Bezerra da Costa David Douglas Sousa Fernandes Adriano A Gomes Valber Elias de Almeida Germano Veras

A rapid and non-destructive methodology is proposed for the screening of edible vegetable oils according to conservation state expiration date employing near infrared (NIR) spectroscopy and chemometric tools. A total of fifty samples of soybean vegetable oil, of different brands andlots, were used in this study; these included thirty expired and twenty non-expired samples. The oil oxidation was...

Journal: :BioMedical Engineering OnLine 2008
Ivan A Dotsinsky Georgy S Mihov

BACKGROUND Electrocardiogram recordings are very often contaminated by high-frequency noise usually power-line interference and EMG disturbances (tremor). Specific method for interference cancellation without affecting the proper ECG components, called subtraction procedure, was developed some two decades ago. Filtering out the tremor remains a priori partially successful since it has a relativ...

Journal: :Europan journal of science and technology 2021

Makine sağlığı göstergesi, bir makine parçasının bozulma aşamalarını ve ortaya çıkacak nihai arızasını gösterir. Bu çalışmanın temel amacı, öğrenmesi metodolojisi kullanarak titreşim verilerinden göstergesini belirlemektir. Tespit edilen bu sağlık göstergesi daha sonra kalan faydalı ömür tahminde kullanılacaktır. hesaplamak için gerekli adımlar, özellik çıkarma, normalleştirme bileşen analizi o...

Journal: :journal of sciences islamic republic of iran 0

a rapid, sensitive and versatile kinetic method is presented for the simultaneous spectrophotometric determination of iodide and iodate by partial least-squares regression (pls) using original and derivate data named as absorbance and rate data. the method is based on the catalytic effect of the cited anions on the reaction rate between ce(iv) and as(iii) in 2 mol l?1 sulfuric acid medium. the ...

2007
Hongliang Fang Shunlin Liang John R. Townshend Robert E. Dickinson

Leaf Area Index (LAI) is an important biophysical variable for characterizing the land surface vegetation. Global LAI product has been routinely produced from the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellite platforms. However, the MODIS standard LAI product is not continuous both spatially and temporally. To fill the gaps and improve the quality, we...

2012
Yidan Bao Wenwen Kong Fei Liu Zhengjun Qiu Yong He

Amino acids are quite important indices to indicate the growth status of oilseed rape under herbicide stress. Near infrared (NIR) spectroscopy combined with chemometrics was applied for fast determination of glutamic acid in oilseed rape leaves. The optimal spectral preprocessing method was obtained after comparing Savitzky-Golay smoothing, standard normal variate, multiplicative scatter corre...

2015
Faridah Abd Rahman Mohd Fauzi Othman

Eye blink artifact is one of the major problems in electroencephalograph (EEG) signals which mainly affected a frontal channel. A frontal channel often involved in recent applications of portable EEG devices which require a real time processing including for artifact removal. In this paper, we proposed a new referencing method in adaptive filtering for eye blinks removal of a single-channel EEG...

Journal: :Industrial & engineering chemistry research 2013
Kamuran Turksoy Elif S Bayrak Lauretta Quinn Elizabeth Littlejohn Derrick Rollins Ali Cinar

Hypoglycemia is a major challenge of artificial pancreas systems and a source of concern for potential users and parents of young children with Type 1 diabetes (T1D). Early alarms to warn the potential of hypoglycemia are essential and should provide enough time to take action to avoid hypoglycemia. Many alarm systems proposed in the literature are based on interpretation of recent trends in gl...

2016
Andrew M. Sila Keith D. Shepherd Ganesh P. Pokhariyal

We propose four methods for finding local subspaces in large spectral libraries. The proposed four methods include (a) cosine angle spectral matching; (b) hit quality index spectral matching; (c) self-organizing maps and (d) archetypal analysis methods. Then evaluate prediction accuracies for global and subspaces calibration models. These methods were tested on a mid-infrared spectral library c...

2011
Jun Luo Tao Liu Yande Liu

Adulteration of edible vegetable oils is a very serious problem affecting its commercial value and customers’ health. FT-NIR and Confocal Micro-Raman have been explored for discriminating adulteration of sesame oils. The soybean, corn, and peanut oil were mixed into sesame oils in the range of 5~20%(v/v),respectively,and their Confocal Micro-Raman and FT-NIR spectra were collected. Principal co...

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