Showing papers on "Analytical technique published in 2018"
01 Jan 2018
TL;DR: Laser induced breakdown spectroscopy (LIBS) as discussed by the authors is a technique where atoms and ions are primarily formed in their excited states as a result of interaction between a tightly focused laser beam and the material sample.
Abstract: Laser induced breakdown spectroscopy (LIBS) is basically an emission spectroscopy technique where atoms and ions are primarily formed in their excited states as a result of interaction between a tightly focused laser beam and the material sample. The interaction between matter and high-density photons generates a plasma plume, which evolves with time and may eventually acquire thermodynamic equilibrium. One of the important features of this technique is that it does not require any sample preparation, unlike conventional spectroscopic analytical techniques. Samples in the form of solids, liquids, gels, gases, plasmas and biological materials (like teeth, leaf or blood) can be studied with almost equal ease.LIBS has rapidly developed into a major analytical technology with the capability of detecting all chemical elements in a sample, of real- time response, and of close-contact or stand-off analysis of targets. The present book has been written by active specialists in this field, it includes the basic principles, the latest developments in instrumentation and the applications of LIBS. It will be useful to analytical chemists and spectroscopists as an important source of information and also to graduate students and researchers engaged in the fields of combustion, environmental science, and planetary and space exploration. It features: recent research work, possible future applications and LIBS Principles.
611 citations
TL;DR: This review discusses this tedious part of bioanalytical studies, applied to large-scale samples and using liquid chromatography coupled with different detector types as core analytical technique.
Abstract: Quality of the analytical data obtained for large-scale and long term bioanalytical studies based on liquid chromatography depends on a number of experimental factors including the choice of sample preparation method. This review discusses this tedious part of bioanalytical studies, applied to large-scale samples and using liquid chromatography coupled with different detector types as core analytical technique. The main sample preparation methods included in this paper are protein precipitation, liquid-liquid extraction, solid-phase extraction, derivatization and their versions. They are discussed by analytical performances, fields of applications, advantages and disadvantages. The cited literature covers mainly the analytical achievements during the last decade, although several previous papers became more valuable in time and they are included in this review.
33 citations
TL;DR: Preliminary results on a selected set of models, submitted in different stages of a well-established artificial ageing protocol, demonstrate the specific complementary input of each analytical technique included in the analytical approach and a step forward in the optimization of the approach.
32 citations
01 Dec 2018
TL;DR: A combination between the analytical based on voltage stability index (VSI) and sine-cosine algorithm (SCA) is developed to achieve a minimum loss and regulate the distribution system voltage.
Abstract: This paper proposes a hybrid analytical and metaheuristic optimization technique to find the proper locations and sizes for the distributed generator (DG) and Distribution Static Synchronous Compensator (D-STATCOM) in distribution networks to minimize the total losses. The analytical technique may be unsuitable to give the best place and capacity of DGs and D-STATCOMs. In this work, a combination between the analytical based on voltage stability index (VSI) and sine-cosine algorithm (SCA) is developed to achieve a minimum loss and regulate the distribution system voltage. In the proposed technique, the optimal location is selected using the VSI while the optimum capacities for the DG and D-STATCOM at each bus are evaluated using the SCA. The proposed hybrid optimization approach is comprehensively compared with other existing analytical and metaheuristic optimization techniques to prove its effectiveness. All simulations are executed using the standard IEEE-12 and 69 bus radial feeders on MATLAB M. Files
29 citations
01 Jan 2018
TL;DR: In this article, a new analytical technique is presented based on the popularly known sinh-Gordon equation and a wave transformation, where at each every steps involving integration, the integration constants are considered to not be zero which gives rise to new form of travelling wave solutions.
Abstract: A newly propose mathematical approach is presented in this study. We utilize the new approach in investigating the solutions of the (1+1)-dimensional nonlinear dispersive modified Benjamin-Bona-Mahony equation. The new analytical technique is based on the popularly known sinh-Gordon equation and a wave transformation. In developing this new technique at each every steps involving integration, the integration constants are considered to not be zero which gives rise to new form of travelling wave solutions. The (1+1)-dimensional nonlinear dispersive modified Benjamin-Bona-Mahony is used in modelling an approximation for surface long waves in nonlinear dispersive media. We construct some new trigonometric function solution to this equation. Moreover, the finite forward difference method is utilized in investigating the numerical behavior of this equation by taking one of the obtained analytical solutions into consideration. We finally, give a comprehensive conclusions.
28 citations
TL;DR: High-resolution ultrasonic spectroscopy (HR-US) is an analytical technique for direct and non-destructive monitoring of molecular and micro-structural transformations in liquids and semi-solid materials.
Abstract: . High-resolution ultrasonic spectroscopy (HR-US) is an analytical technique for direct and non-destructive monitoring of molecular and micro-structural transformations in liquids and semi-solid materials. It is based on precision measurements of ultrasonic velocity and attenuation in analysed samples. The application areas of HR-US in research, product development, and quality and process control include analysis of conformational transitions of polymers, ligand binding, molecular self-assembly and aggregation, crystallisation, gelation, characterisation of phase transitions and phase diagrams, and monitoring of chemical and biochemical reactions. The technique does not require optical markers or optical transparency. The HR-US measurements can be performed in small sample volumes (down to droplet size), over broad temperature range, at ambient and elevated pressures, and in various measuring regimes such as automatic temperature ramps, titrations and measurements in flow.
23 citations
TL;DR: In this paper, the authors present a procedure for evaluating self-capacitances and parasitic capacitors between physically adjacent turns in multiconductor systems, with a special focus on single-layer air-core inductors.
Abstract: This paper presents a procedure for evaluating self-capacitances and parasitic capacitors between physically adjacent turns in multiconductor systems—with a special focus on single-layer air-core inductors. To this end, the paper proposes the use of standard cells, which correspond to a minimal and basic turn, layer, or macrolevel arrangement of a winding in reference to its patterns of stored electrostatic energy. A standard cell embraces mathematical rules derived by means of a curve fitting approach through a set of finite element analysis (FEA) simulations. Besides, it is applied in a matching routine wherein self- and stray capacitances are evaluated according to the relative position of each turn, layer, or macrolevel arrangement along the length of the winding. Finally, the analytical technique is validated by comparing frequency-domain results obtained from an implemented SPICE model and laboratory measurements.
22 citations
TL;DR: The work of the Landes Lab is detailed in developing single-molecule techniques that refine the stochastic theory of chromatography as a first step toward predictive chromatographic column design.
Abstract: ConspectusColumn chromatography is a widely used analytical technique capable of identifying and isolating a desired chemical species from a more complicated mixture. Despite the method’s prevalence, theoretical descriptions have not advanced to accommodate today’s common analyte, proteins. Proteins are increasingly used as biologics, a term that refers to biological pharmaceuticals, and present new complexities for chromatographic separation. Large variations in surface charge, chemistry, and structure among protein analytes expose the limits in the current theoretical framework’s ability to predict the efficiency of a column without empirical data. The bottleneck created by empirical optimization is a strong motivation for a renewed effort to achieve an in-depth understanding of the range of interactions that occur between a protein analyte and the stationary phase that together enable its selective separation from other constituents of a mixture. The physical and chemical processes that dictate the amo...
17 citations
05 Nov 2018
TL;DR: According to the International Union of Pure and Applied Chemistry (IUPAC) recommendation, analytical pyrolysis (Py) is defined as the characterization in an inert atmosphere of a material or a chemical process by a chemical degradation reaction(s) induced by thermal energy as mentioned in this paper.
Abstract: According to the International Union of Pure and Applied Chemistry (IUPAC) recommendation, analytical pyrolysis (Py) is defined as the characterization in an inert atmosphere of a material or a chemical process by a chemical degradation reaction(s) induced by thermal energy [1]. Thermal degradation under controlled conditions is often used as a part of an analytical procedure, either to render a sample into a suitable form for subsequent analysis by gas chromatography (GC), mass spectrometry (MS), gas chromatography coupled with the mass spectrometry (GC/MS), with the Fourier-transform infrared spectroscopy (GC/FTIR), or by direct monitoring as an analytical technique in its own right [2].
12 citations
TL;DR: In this paper, the Fourier transform spectroscopy (FTS) was used for continuous rapid measurements with a simple delay line based on a dynamic phase-control technique, achieving the Nyquist-limited spectral acquisition rate over 10,000 spectra per second.
Abstract: Fourier-transform spectroscopy (FTS) has been widely used as a standard analytical technique over the past half-century. FTS is an autocorrelation-based technique that is compatible with both temporally coherent and incoherent light sources, and functions as an active or passive spectrometer. However, it has been mostly used for static measurements due to the low scan rate imposed by technological restrictions. This has impeded its application to continuous rapid measurements, which would be of significant interest for a variety of fields, especially when monitoring of non-repeating or transient complex dynamics is desirable. Here, we demonstrate highly efficient FTS operating at a high spectral acquisition rate with a simple delay line based on a dynamic phase-control technique. The independent adjustability of phase and group delays allows us to achieve the Nyquist-limited spectral acquisition rate over 10,000 spectra per second, while maintaining a large spectral bandwidth and high resolution. We also demonstrate passive spectroscopy with an incoherent light source.
11 citations
TL;DR: In this paper, a time fractional diffusion problem is formulated with special boundary conditions, specifically the nonlocal boundary conditions. This new problem is then solved by utilizing the Laplace transform method coupled to the well-known Adomian decomposition method after employing the modified version of Beilin's lemma featuring fractional derivative in time.
Abstract: In the present article, a time fractional diffusion problem is formulated with special boundary conditions, specifically the nonlocal boundary conditions. This new problem is then solved by utilizing the Laplace transform method coupled to the well-known Adomian decomposition method after employing the modified version of Beilin’s lemma featuring fractional derivative in time. The Caputo fractional derivative is used. Some test problems are included. Mathematics Subject Classification: 26A33, 44A10, 80A20, 41A58.
TL;DR: Galerkin's method is applied to solve non-linear BVPs of order four, five, six, and seven and gives efficient and accurate first-order approximate solution.
TL;DR: This work demonstrates highly efficient Fourier transform spectroscopy operating at a high spectral acquisition rate with a simple delay line based on a dynamic phase-control technique that enables fast acquisition without compromising bandwidth or resolution.
Abstract: Fourier-transform spectroscopy (FTS) has been widely used as a standard analytical technique over the past half-century. FTS is a simple and robust autocorrelation-based technique that is compatible with both temporally coherent and incoherent light sources, which functions as an active or passive spectrometer. However, this technique has been mostly used for static measurements due to the low scan rate imposed by technological restrictions. This has impeded its application to continuous rapid measurements, which would be of significant interest for a variety of fields, especially when monitoring of non-repeating/transient complex dynamics is desirable. Here, we demonstrate highly efficient FTS operating at a high spectral acquisition rate with a simple delay line based on a dynamic phase-control technique. The independent adjustability of phase and group delays allows us to achieve the Nyquist-limited spectral acquisition rate over 10,000 spectra per second, while maintaining a large spectral bandwidth and high resolution. In addition, we demonstrate the ability of this passive spectrometer working with an incoherent light source.
TL;DR: In this article, an analytical technique, namely the new iterative method (NIM), is applied to obtain an approximate analytical solution of the nonlinear Harry-Dym equation which is often used in the theory of solitons.
Abstract: In this paper, an analytical technique, namely the new iterative method (NIM), is applied to obtain an approximate analytical solution of the nonlinear Harry-Dym equation which is often used in the theory of solitons. The rapid convergence of the method results in qualitatively accurate solutions in relatively few iterations; this is obvious upon comparing the obtained analytical solutions with the exact solutions. Our results indicate that NIM is highly accurate and efficient, therefore can be considered a very useful and valuable method.
TL;DR: In this paper, a semi-infinite open-ended cylindrical waveguide with uniform dielectric filling placed into a collinear infinite vacuum waveguide is investigated.
Abstract: We consider a semi-infinite open-ended cylindrical waveguide with uniform dielectric filling placed into collinear infinite vacuum waveguide with larger radius. Electromagnetic field produced by a point charge or Gaussian bunch moving along structure's axis from the dielectric waveguide into the vacuum one is investigated. We utilize the modified residue-calculus technique and obtain rigorous analytical solution of the problem by determining coefficients of mode excitation in each subarea of the structure. Numerical simulations in CST Particle Studio are also performed and an excellent agreement between analytical and simulated results is shown. The main attention is paid to analysis of Cherenkov radiation generated in the inner dielectric waveguide and penetrated into vacuum regions of the outer waveguide. The discussed structure can be used for generation of Terahertz radiation by modulated bunches (bunch trains) by means of high-order Cherenkov modes. In this case, numerical simulations becomes difficult while the developed analytical technique allows for efficient calculation of the radiation characteristics.
TL;DR: In this article, an alternative approach to micro-tome the polymer film to reveal the multilayer cross-section followed by imaging the crosssection with bismuth liquid metal ion gun (LMIG) was presented.
Abstract: Time-of-flight secondary ion mass spectrometry is a widely used surface analytical technique, which can provide chemical information from both the uppermost surface and underneath the surface for various materials. For identification of the structure of a multilayer polymer film with unknown chemical composition, it is generally not practical to perform depth profiling using atomic ion sputtering because it will destroy the chemical information and it is difficult to obtain accurate chemical depth distributions. In this study, we present an alternative approach to microtome the polymer film to reveal the multilayer cross-section followed by imaging the cross-section with bismuth liquid metal ion gun (LMIG). To identify the spatial distribution of the thin inorganic layer in the multilayer film, bismuth sputtering was employed on the same analysis area to remove organic mass interference. Overlaid images from two separate analyses allow us to determine both inorganic and organic layers chemically and laterally with high lateral resolution.
01 Jan 2018
TL;DR: In this article, a single-sided Linear Permanent Magnet Flux Switching Machine (LPMFSM) with twelve mover slots and fourteen stator teeth (12/14), having two additional end teeth on both sides of mover is presented.
Abstract: A novel single sided Linear Permanent Magnet Flux Switching Machine (LPMFSM) with twelve mover slots and fourteen stator teeth (12/14), having two additional end teeth on both sides of mover is presented. Presence of both Armature Winding (AW) and Permanent Magnet (PM) on mover structure results in completely passive, robust, and low cost stator. While, demerits such as less slot area, complex flux density distribution, and magnetic saturation caused by passive stator demands to be analyzed by time consuming and computationally complex numerical modelling techniques, i.e., Finite Element (FE) Analysis, requiring expensive hardware/software. In this paper, two cost effective and fast response analytical techniques are developed to analyze no-load performance of LPMFSM. Two no-load characteristics, i.e., open-circuit flux linkage and detent force are analyzed by Equivalent Magnetic Circuit (termed as analytical technique No. 1) and Lumped Parameter Equivalent Magnetic Circuit (termed as analytical technique No. 2). Both analytical methodologies are compared and validated with corresponding globally accepted FE Analysis. Analysis revealed that LPEMC is better approach for initial design of LPMFSM.
TL;DR: In this paper, two efficient approaches for solving the current diffusion equation (CDE), which governs current diffusion through the conductive plasma inside a tokamak and compares them to CRONOS to kamak simulation suite, as well as the tradeoff between different approaches has been undertaken.
Abstract: This paper deals with two efficient approaches for solving the current diffusion equation (CDE), which governs current diffusion through the conductive plasma inside a tokamak and compares them to CRONOS tokamak simulation suite, as well. Namely, CDE is solved via the finite-element method (FEM) and an analytical technique, respectively, and the obtained results are subsequently compared with the solution obtained from the state-of-the-art CRONOS suite with finite-difference calculations. The FEM solution is carried out featuring the use of linear and Hermite type shape functions, respectively, while the analytical solution is obtained by applying certain approximations to the CDE. The tradeoff between different approaches has been undertaken. Thus, the results obtained via the FEM approach (with Hermite basis function, in particular) show very good agreement with the CRONOS results, while also providing the stability of the solution. On the other hand, the results obtained via the analytical solution clearly demonstrate a good agreement with the numerical results in the edge region, which makes it very useful for various applications, e.g., for benchmarking purposes.
01 Jan 2018
TL;DR: In this article, a modified rational harmonic balance method (MRHBM) was proposed for nonlinear non-smooth oscillators with mixed parity, which is also useful for other nonlinear oscillatory problems.
Abstract: In the present paper, a new analytical technique based on the rational harmonic balance method (RHBM) has been introduced to determine approximate periodic solutions for the nonlinear non-smooth oscillator. A frequency–amplitude relationship has also been obtained by a novel analytical way. The standard rational harmonic balance method (SRHBM) cannot be used directly; it is possible if we rewrite the nonlinear differential equations (NDEs). To overcome this previously stated issue, we offered a modified rational harmonic balance method (MRHBM). It is noticed that a MRHBM works very well for the whole range of initial amplitudes and the excellent agreement of the approximate frequencies as well as the corresponding periodic solutions with its exact ones. The method is basically illustrated by the nonlinear non-smooth oscillators, but it is additionally useful for other nonlinear oscillatory problems with mixed parity arising in recent development of nonlinear sciences and engineering.
TL;DR: In this paper, a simple analytical technique was used to model a MachÀ"Zehnder fiber optic interferometric sensors that allow us to predict and calculate via computer simulations parameters that are not easily obtained experimentally.
Abstract: Here we report a simple analytical technique to model a Mach–Zehnder fiber optic interferometric sensors that allow us to predict and calculate via computer simulations parameters that are not easily obtained experimentally. This model was calibrated and compared with experimental data using a 120 mm sensor for measurements of temperature, refractive index and water level. For instance, we were able to calculate the effects on the cladding effective index caused by the variation of those physical parameters. Moreover, this analysis could further our understanding of such sensors and allow us to make predictions about their use in different applications and even their behavior with different sensing lengths.
01 Sep 2018
TL;DR: In this paper, an analytical technique was used to model the wave coupling from a coaxial line fed probe to a waveguide device with promising applications in the additive manufacturing (AM) field.
Abstract: This work presents a study about a analytical technique used to model the wave coupling from a coaxial line fed probe to a waveguide device with promising applications in the Additive Manufacturing (AM). The analytical technique estimates the input impedance of the probe based in dyadic Greens functions. This technique allows to obtain the appropriate parameters, height and position, of the probe in a closed form and ensure a good impedance matching. In order to validate the electrical response of the device, the estimated parameters were used to build the geometrical model using COMSOL software and determine the return loss to the coaxial probe-to-rectangular waveguide transition. The simulation results showed a good impedance matching to the operating frequency 2.41 GHz. Finally, a fine-tuning was applied in the waveguide device to maximize the power transfer.
TL;DR: The proposed iterative analytical trajectory design technique, named as biased iterative patched conic technique, does not depend upon numerical integration and all computations are carried out using closed form expressions and the improved design is very close to the numerical design.
01 Sep 2018
TL;DR: A study on the aerodynamics of an unmanned aero vehicle (UAV) during flight conditions is presented and it can be seen that the Coefficient of Lift (CL) obtained from DATCOM and XFLR is similar to CL of CFD simulation.
Abstract: Abstract—Aerodynamic stability coefficients are necessary to be known before any unmanned aircraft flight is performed. This requires expertise on aerodynamics and stability control of the aircraft. To enable efficacious performance of aircraft requires that a well-defined flight path and aerodynamics should be defined beforehand. This paper presents a study on the aerodynamics of an unmanned aero vehicle (UAV) during flight conditions. Current research holds comparative studies of different parameters for flight aerodynamic, measured using two different open source analytical software programs. These software packages are DATCOM and XLRF5, which help in depicting the flight aerodynamic variables. Computational fluid dynamics (CFD) was also used to perform aerodynamic analysis for which Star CCM+ was used. Output trends of the study demonstrate high accuracies between the two software programs with that of CFD. It can be seen that the Coefficient of Lift (CL) obtained from DATCOM and XFLR is similar to CL of CFD simulation. In the similar manner, other potential aerodynamic stability parameters obtained from analytical software are in good agreement with CFD.
08 Jun 2018
TL;DR: In this paper, an analytical model for the assessment of the electric field radiated by a base station antenna system above a two-layered medium is presented, based on Modified Image Theory method (MIT).
Abstract: This paper outlines an analytical model for the assessment of the electric field radiated by a base station antenna system above a two-layered medium. The model used in electric field strength assessment is based on Modified Image Theory method (MIT). The obtained results for the electric field are compared to the results calculated for the single layer configuration. Several variables have been varied to examine the impact of two-layered medium. The calculations have been undertaken for the far field only.
01 Jan 2018
TL;DR: In this article, the principal analytical techniques used to acquire inorganic geochemical data are ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry), ICPMS (Inductive Coupled Plas-Mass Spectrometer) and XRF (X-ray Fluorescence).
Abstract: Very little information has been published on sampling and sample preparation procedures, yet these are paramount to the success of chemostratigraphy as, without good quality data, it is not possible to produce robust chemostratigraphic schemes. This is especially true of studies involving the analysis of cuttings samples, which have to be washed, sieved, meticulously ‘picked’ and ground prior to analysis. Core and field outcrop samples are simply described and then ground. The principal analytical techniques used to acquire inorganic geochemical data are ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometry), ICP-MS (Inductively Coupled Plasma-Mass Spectrometry) and XRF (X-ray Fluorescence). For the best quality data acquired for the largest number of elements, it is recommended that a combination of ICP-OES and ICP-MS are used. The XRF technique produces data for a lesser number of elements, but can be useful where rapid analysis of samples is required. Irrespective of the analytical technique used to acquire data, however, it is important to check the results for accuracy (closeness of result to ‘known’ values of particular elements), precision (repeatability of results) and detection limits, before the data can be utilized for chemostratigraphic purposes.
TL;DR: In this article, an analytical technique is proposed to reveal the relaxation time distribution of dynamic charge events using the current noise spectrum of a transistor, by applying an inverse integral transformation to the McWhorter model.
Abstract: An analytical technique is proposed to reveal the relaxation time distribution of dynamic charge events using the current noise spectrum of a transistor, by applying an inverse integral transformation to the McWhorter model. In the proposed method, the continuous relaxation-time distribution function G(τ) can be analytically derived from the noise spectra S(ω) without a spectrum deconvolution. The feasibility of the proposed method is demonstrated by characterizing the charge dynamics of tetraphenylporphyrin molecules dispersed on the surface of a GaAs-based nanowire field-effect transistor. Our analysis successfully verified the time constant of the molecule-related dynamic charge events and effects of photo-excitation.
01 Jun 2018
TL;DR: In this article, an analytical technique, namely the homotopy analysis method (HAM), is applied to obtain an approximate analytical solution of nonlinear reaction-diffusion-convection problems which is presented to show the application of the present technique.
Abstract: In this work, an analytical technique, namely the homotopy analysis method (HAM), is applied to obtain an approximate analytical solution of Nonlinear Reaction-Diffusion-Convection Problems which is presented to show the application of the present technique. A comparison is made between the HAM results and the Adomian’s decomposition method (ADM) and the homotopy perturbation method (HPM). The results reveal that HAM is very simple and effective. The HAM contains the auxiliary parameter Nh; which provides us with a simple way to adjust and control the convergence region of solution series.
01 Dec 2018
TL;DR: The obtained results prove that the DG improves the voltage profile and decrease the power losses of the test networks however the standard deviation of the system is increase.
Abstract: This paper studies a probability power-flow analysis radial distribution system (RDS) with photovoltaic (PV) DG utilizing an analytical approach. A combined cumulant and gram-chalier expansion are used to solve the analytical technique problem, cumulants are used to solve convolution problem and gram-chalier expansion is utilized to obtain the probability density function of the output variables. The uncertainties of DG and load demand are taken into consideration. To study the impact of DG in RDS, both solar irradiance random nature and load fluctuation are used as random variables. The developed technique is carried out on the standard IEEE 85-bus feeder using MATLAB M-Files. The obtained results prove that the DG improves the voltage profile and decrease the power losses of the test networks however the standard deviation of the system is increase.
TL;DR: Mat-CHN as mentioned in this paper is a software for elemental content determination and titration based on the individual mole number of each constituent in the compound analyzed, leading to an accurate comparison of the theoretical and experimental results of centesimal compositions.
Abstract: Elemental Analysis (microanalysis) is a reference method widely used to make assessments of thequality of chemical or biochemical substances. Using very small quantities of substance and no methoddevelopment, this analytical technique delivers absolute assays. Compared to other methods needing larger samplequantities and most of the time reference standards, the Elemental Analysis is the preferred technique of scientists. One of the difficulties with this method is the definition of the theoretical elemental composition when several complementary assays values, generally delivered in w/w percentages (e.g., water content by Karl Fischer method), instead of mole numbers (as this is the case for NMR determination), must be taken into account. The situation is manageable with only one of this type of additional assay; however, this exercise becomes more complicated when the scientists must integrate two or more assay values. Mat-CHN software was developed specifically to resolve these difficulties, by delivering the individual mole numberof each constituent assayed in the compound analyzed, leading to an accurate comparison of the theoretical and experimental results of centesimal compositions. Apart its large capabilities for simulations, Mat-CHN increases the interest of the Elemental Analysis technique for scientists working in discovery fields or when new molecular entities are promoted to pre-development and development stages, either for absolute titration of their reference standards or for direct titrations of the drug substance itself. The software conducts to simple titration determinations, based on Nitrogen “Kjeldhal” assays and/or molecular weight reports, compared to data of the pure substance. Based on experimental analytical data, Mat-CHN software delivers accurate elemental content determinations and titration of the substance analyzed. These results should be considered also experimental ones, because Mat-CHN resolves the equations without any convergence or external parameters.