Selective Spectrophotometric and Spectrofluorometric Methods for the Determination of Amantadine Hydrochloride in Capsules and Plasma via Derivatization with 1,2-Naphthoquinone-4-s... by Ashraf M. Mahmoud, Nasr Y. Khalil, Ibrahim A. Darwish, Tarek Aboul-Fadl

“…New selective and sensitive spectrophotometric and spectrofluorometric methods have been developed and validated for the determination of amantadine hydrochloride (AMD) in capsules and plasma. …”
Get full text

Evaluation of two sample preparation methods for the determination of cadmium, nickel and lead in natural foods by Graphite Furnace Atomic Absorption Spectrophotometry by David Romero-Estévez, Gabriela S. Yánez-Jácome, Karina Simbaña-Farinango, Pamela Y Vélez-Terreros, Hugo Navarrete

“…This situation calls for the development of locally-applicable analytical methods for the determination of heavy metal concentrations in common vegetal and animal food products. …”
Get full text

Determination of the Effects of Mineral on Seed Yield by Different Statistic Methods in Bread Wheat (Triticum aestivum L.) under Drought Conditions by Murat Olgun, Okan Sezer, Metin Turan, Zekiye Budak Başçiftçi, Nazife Gözde Ayter Arpacıoğlu, Murat Ardıç, Onur Koyuncu

“…Thepurpose of this study is to determine the effect of minerals (N, P, K, Ca, Mg, S, Fe, Mn, Zn and Cu) on yield components by different statisticalmethods and this will help to understand efficiency of them in breedingprograms. …”
Get full text

Methodological tools of consulting companies for evaluating the effectiveness of organizations. by A. A. Timofeev, A. Yu. Anisimov

“…The results obtained include the definition of a set of  methodological tools within the framework of the resource-cost method, the Paretian optimum and the dynamic standard  method; substantiation of the equivalence and mutual complementarity of scientific model alternatives to efficiency, the interaction of the process and the result of efficiency assessment based on the principle of complementarity; evaluation  of the organization’s activities in a static efficiency model as an example of the implementation of the principle of  complementarity. …”
Get full text

GPU-Accelerated Fock Matrix Computation with Efficient Reduction by Satoki Tsuji, Yasuaki Ito, Haruto Fujii, Nobuya Yokogawa, Kanta Suzuki, Koji Nakano, Victor Parque, Akihiko Kasagi

“…In quantum chemistry, constructing the Fock matrix is essential to compute Coulomb interactions among atoms and electrons and, thus, to determine electron orbitals and densities. In the fundamental framework of quantum chemistry such as the Hartree–Fock method, the iterative computation of the Fock matrix is a dominant process, constituting a critical computational bottleneck. …”
Get full text

Method of Critical Technologies by Alexander Sokolov

Get full text

Method of estimation of PM10 fine particle concentration during operation of centrifugal friction rollers by Safronov E.V., Nosko A.L., Sharifullin I.A., Guskova A.S.

“…The coefficient of environmental friendliness of the design of the brake roller of the friction type has been introduced, which is one of the factors determining the maximum number of braking, and takes values from 0 to 1.0 for various designs of the friction roller — closed type, ventilated and open type. …”
Get full text

Use of Environmental DNA to Determine Fantail Darter (Etheostoma flabellare) Density in a Laboratory Setting: Effects of Biomass and Filtration Method by Ramon A. Guivas, Ben F. Brammell

Get full text

An efficient numerical procedure for calculating periodic vibrations of elastic mechanisms by Nguyen Van Khang, Nguyen Phong Dien, Nguyen Sy Nam

“… This paper proposes a numerical procedure based on the well-known Newmark integration method to determine initial conditions for the periodic solution of a system of linear differential equations with time-periodic coefficients. …”
Get full text

Analysis of influence of the item total scores on the levels of ability of respondents in the dichotomous Rasch model based on the weighted maximum likelihood method by E. B. Belov, M. V. Alekseev, N. P. Kitaev, A. I. Kuchumov

“…For items, we calculate the item total scores that determine their items difficulties. The weighting coefficients of the used WML depend on the item total scores and on the coefficient of influence K. …”
Get full text

A Comparison and Evaluation of Landslide Stabilization Methods (Case Study: The Landslide Occurred in the 194 km of Malayer - Kermanshah Railway) by Jahangir Khazaei, Mehdi Ghaem

“…Then, the geometry of landslide in different states including the present slope (unstable), the slope with modified geometry (the proposed method in this study), the modified slope proposed by consultant engineer, and the stabilized slope by pile system is modeled in FLAC 3D software, considering soil characteristics determined by the soil mechanics laboratory. …”
Get full text

Comparison of the Regression Method and The Neural Network Method in Specific Cases of Engineering Practice by Križan Peter, Svátek Michal, Matúš Miloš, Hanko Lukáš

“…The obtained models, which were created using the two methods already mentioned, were subsequently compared based on their predictive ability, specifically through the so-called predictive ability of the model, which is represented by the coefficient of determination R2, which is defined as the ratio of the sum of squares SSM explained by the model to the total sum of squares SST. …”
Get full text

Regression Analysis in Development of Method for Isolation and Quantitative Determination of Water-soluble Polysaccharides from Sunflower Roots of One-year-old by N. A. Dyakova

“…The adequacy of the model was confirmed by testing hypotheses against Pearson's χ2 criterion. The correlation coefficient derived from the values of the regression coefficient and the mean square deviation was used in determining the tightness of the overall relationship between the source and the obtained data. …”
Get full text

The Application of Imperialist Competitive Algorithm in Determining the Optimal Parameters of Empirical Area Reduction Method to Predict the Sedimentation Process in Dez Dam by Arash Azari, Sadegh Soori Hossein Bonakdari, Hossein Bonakdari

Get full text

A Method for Determining Intrinsic Mode Function Number in Variational Mode Decomposition and Its Application to Bearing Vibration Signal Processing by Shoujun Wu, Fuzhou Feng, Junzhen Zhu, Chunzhi Wu, Guang Zhang

“…A method called center frequency statistical analysis (CFSA) is proposed in this paper to determine K value. …”
Get full text

Simultaneous determination of moisture, 1,2-propanediol, glycerol and menthol in tobacco products using GC-TCD&FID in parallel method by Yaping Ma, Qinlin Xiao, Li Li, Juan Yang, Jing Wen, Yuyang Deng, Jia Guo, Xixiang Zhang, Wu Wen, Yi Shen

“…However, accurately measuring these components simultaneously remains a challenge. In this study, a method applying GC-TCD&FID method for the simultaneous determination of moisture, 1,2-propanediol, glycerol and menthol was developed. …”
Get full text

Dispersive liquid-liquid microextraction/HPLC techniques for determination of oxytetracycline and doxycycline residues in beef samples: method developments and statistical analysis by Muinat Aliu, Abibat Junaid, Abdulrahman Ibraheem, Aisha Ishaq, Abubakar Lawal, Kikelomo Ayeni`, Amudalat Lawal, Lukman Abdulra'uf

“… A rapid, cost-effective and environment-friendly sample pre-treatment method involving dispersive liquid-liquid microextraction (DLLME) and high-performance liquid chromatography (HPLC) was developed and applied for the extraction of oxytetracycline and doxycycline residues in beef samples (liver, kidney and muscle). …”
Get full text

Establishment and Validation of Sensitive Liquid Chromatography–Tandem Mass Spectrometry Method for Aldosterone Quantification in Feline Serum with Reference Interval Determination... by Tommaso Furlanello, Francesca Maria Bertolini, Andrea Zoia, Jose Sanchez del Pulgar, Riccardo Masti

Get full text

Novel Green RP-HPLC Method for Simultaneous Determination of Sodium Diclofenac and Benzyl Alcohol as Bulk Mixtures and in Pharmaceutical Injectable Forms by Ola Mahmod Younes

“…Therefore, a new practical, accurate, and green RP-HPLC method was developed to determine Sodium Diclofenac and Benzyl Alcohol simultaneously in bulk and pharmaceutical injectable forms. …”
Get full text

A Novel Analysis Method for Simultaneous Determination of 31 Pesticides by High-Performance Liquid Chromatography-Tandem Mass Spectrometry in Ginseng by Xingang Hou, Liangyue Liu, Liping Wei, Da Feng, Meng Lv, Xiumei Wang, Xiaolong Yu, Zhongbin Lu, Zhiguang Hou

“…In this study, a novel analysis method was established for simultaneous determination of 31 pesticides in ginseng by high-performance liquid chromatography-mass spectrometry. …”
Get full text