DLLME, which is a method that minimizes organic solvent consumption and waste generation, frequently used for trace analyte determination. In the present work, simple, selective sentsitive spectrophotometric based on dispersive liquid-liquid microextraction was reported. The procedure formation of 1:1 complex between Fe3+ water-soluble Cu(II) phthalocyanine then extraction this into dichloromet...

In recent years, a fundamental problem structure has emerged as very useful in a variety of machine learning applications: Submodularity is an intuitive diminishing returns property, stating that adding an element to a smaller set helps more than adding it to a larger set. Similarly to convexity, submodularity allows one to efficiently find provably (near-) optimal solutions for large problems....

In this research paper, a simple and economic ionic liquid-based liquid-liquid microextraction (IL-DLLME) procedure was developed to ensure efficient rapid separation preconcentration of erythrosine from cosmetic food samples. Important parameters such as IL volume, temperature, acetone ultrasonic time pH that may affect the IL-DLLME have been optimized by central composite design (CCD) based o...

A novel and environment friendly analytical method is reported for total chromium determination and chromium speciation in water samples, whereby tungsten coil atomic emission spectrometry (WCAES) is combined with in situ ionic liquid formation dispersive liquid-liquid microextraction (in situ IL-DLLME). A two stage multivariate optimization approach has been developed employing a Plackett-Burm...

We evaluated the digestibility of plant oils and their influence on growth fatty acid composition in common carp. Apparent coefficients (ADC) lipids were determined carp (200.2 ± 40.0g) fed with cod liver oil (CLO), linseed (LO), sunflower (SFO), or sesame (SO). A 96-day trial was then conducted using six isolipidic (from 100 to 101 g/kg diet) diets, namely CLO, LO, SFO, SO, two blends (SLO = S...

A study of the effects of conjugated linoleic acid (CLA) on the belly firmness and fatty acid composition of genetically lean pigs was conducted. From 75 to 120 kg live weight, 30 gilts were allowed ad libitum access to a corn-soybean meal diet supplemented with either 1% CLA oil (CLA-60) or 1% sunflower oil (SFO) or were fed the sunflower oil-supplemented diet restricted to the amount consumed...

BACKGROUND Human mature oocytes are very susceptible to cryodamage. Several reports demonstrated that vitrification might preserve oocyte better than slow freezing. However, this is still controversial. Thus, larger clinical, biological and experimental trials to confirm this concept are necessary. The aim of the study was to evaluate and compare fine morphological features in human mature oocy...

The pinna, or ex ternal ear, has been shown experim entally to perform an acoustical tran sfo r­ m ation essential to localization in hum an hearing. The m athem atical form of th e tran sfo rm a­ tion is given, the inverse to the transform ation is shown to exist, and a theory of localization constructed from the evidence. The theory is extended to reverberation and o ther facets of hum an hea...

The pinna, or ex ternal ear, has been shown experim entally to perform an acoustical tran sfo r­ m ation essential to localization in hum an hearing. The m athem atical form of th e tran sfo rm a­ tion is given, the inverse to the transform ation is shown to exist, and a theory of localization constructed from the evidence. The theory is extended to reverberation and o ther facets of hum an hea...