Dr. Nairmen Mina-Calmide Profile

Dr. Nairmen Mina-Calmide

Professor at Univ de Puerto Rico Mayag Ez

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 25 September 2007 Paper

Ab initio calculation of Raman vibrational signatures of 2,4-dinitrotoluene, 2,6-dinitrotoluene and 2,4,6-trinitrotoluene

Jairo Castillo-Chara, César Manrique-Bastidas, Nairmen Mina, Miguel Castro, Samuel Hernández-Rivera

Proceedings Volume 6756, 67560G (2007) https://doi.org/10.1117/12.752612

KEYWORDS: Raman spectroscopy, Molecules, Raman scattering, Surface enhanced Raman spectroscopy, Scattering, Explosives, Chemical species, Spectroscopy, Statistical analysis, Light scattering

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Proceedings Article | 4 May 2007 Paper

Characterization and differentiation of high energy amine peroxides by direct analysis in real time TOF/MS

Alvaro Peña-Quevedo, Robert Cody, Nairmen Mina-Camilde, Mildred Ramos, Samuel Hernández-Rivera

Proceedings Volume 6538, 653828 (2007) https://doi.org/10.1117/12.720577

KEYWORDS: Raman spectroscopy, FT-IR spectroscopy, Microscopy, Mass spectrometry, Spectroscopy, Absorption, Attenuated total reflectance, Crystals, Infrared spectroscopy, Microscopes

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Proceedings Article | 27 April 2007 Paper

Adsorption coefficients for TNT on soil and clay minerals

Rosángela Rivera, Julissa Pabón, Omarie Pérez, Miguel Muñoz, Nairmen Mina

Proceedings Volume 6553, 65531L (2007) https://doi.org/10.1117/12.721178

KEYWORDS: Adsorption, Minerals, Soil contamination, Soil science, Explosives, Land mines, Chemical analysis, Liquids, Chromatography, Particles

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Proceedings Article | 18 May 2006 Paper

Spectroscopic signatures of PETN: Part II. Detection in clay

Luz Marina Ballesteros-Rueda, Gloria Herrera-Sandoval, Nairmen Mina, Miguel Castro-Rosario, Julio Briano, Samuel Hernandez-Rivera

Proceedings Volume 6217, 62173D (2006) https://doi.org/10.1117/12.666539

KEYWORDS: Sodium, Explosives, Infrared spectroscopy, Ultraviolet radiation, FT-IR spectroscopy, Spectroscopy, Infrared radiation, Solids, Magnesium, Potassium

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Proceedings Article | 18 May 2006 Paper

FT-IR signatures of TNT on montmorillonite-clay particles

Gloria Marcela Herrera-Sandoval, Luz Marina Ballesteros-Rueda, Nairmen Mina-Camilde, Miguel Castro-Rosario, Julio Briano, Samuel Hernández-Rivera

Proceedings Volume 6217, 62173B (2006) https://doi.org/10.1117/12.666338

KEYWORDS: Explosives, Sodium, FT-IR spectroscopy, Potassium, Minerals, Crystals, Adsorption, Molecules, Radiation effects, Ultraviolet radiation

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Proceedings Article | 18 May 2006 Paper

TNT adsoprtion on clay minerals by HPLC

Rosángela Rivera, Liliana Alzate, Miguel Muñoz, Nairmen Mina

Proceedings Volume 6217, 62171X (2006) https://doi.org/10.1117/12.664091

KEYWORDS: Minerals, Soil science, Soil contamination, Adsorption, Particles, Explosives, Statistical analysis, Quartz, X-rays, Natural surfaces

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Proceedings Article | 18 May 2006 Paper

Interactions of α-RDX with the siloxane site surface: a computational modeling approach

Neiza Hernández, Liliana Alzate, Nairmen Mina

Proceedings Volume 6217, 62171K (2006) https://doi.org/10.1117/12.664079

KEYWORDS: Molecules, Polarization, Explosives, Minerals, Molecular interactions, Land mines, Adsorption, Diffusion, Computational modeling, Chemistry

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Proceedings Article | 10 May 2006 Paper

Effect of water and common salts on the vibrational spectra of high energy cyclic organic peroxides

Alvaro Peña-Quevedo, Javier Figueroa, Nelmarie Rodríguez, Deborah Nieves, Neiza Hernández, Rosangela Rivera, Nairmen Mina, Samuel Hernández-Rivera

Proceedings Volume 6201, 62012D (2006) https://doi.org/10.1117/12.666171

KEYWORDS: Raman spectroscopy, Crystals, Statistical analysis, FT-IR spectroscopy, Ions, Tin, Metals, Humidity, Microscopy, Copper

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Proceedings Article | 10 May 2006 Paper

Synthesis, characterization, and differentiation of high energy amine peroxides by MS and vibrational microscopy

Alvaro Peña-Quevedo, Nairmen Mina-Calmide, Nelmary Rodríguez, Deborah Nieves, Robert Cody, Samuel Hernández-Rivera

Proceedings Volume 6201, 62012E (2006) https://doi.org/10.1117/12.666202

KEYWORDS: Raman spectroscopy, FT-IR spectroscopy, Spectroscopy, Microscopy, Infrared spectroscopy, Crystals, Nitrogen, Attenuated total reflectance, Absorption, Statistical analysis

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Proceedings Article | 10 June 2005 Paper

Effect of environmental conditions on the spectroscopic signature of DNT in sand

Alejandro Blanco, Nairmen Mina, Miguel Castro, Jairo Castillo-Chara, Samuel Hernandez-Rivera

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602452

KEYWORDS: Raman spectroscopy, Ultraviolet radiation, Explosives, Land mines, Spectroscopy, Crystals, Particles, Statistical analysis, Humidity, Environmental sensing

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Landmines have been a part of war technology for many years. As a result of the continued and indiscriminate use in approximately 90 countries landmines pose a severe and ever growing problem and a daily risk. Raman Spectroscopy is capable of providing rich information about the molecular structure of the sample and pinpoint detection of many chemicals, both of organic and inorganic nature. The presence of landmines in soils can be detected by Raman Spectroscopy sensing in a Point Detection modality, using characteristic vibrational signals of each explosive present in landmines. Detection of 2,4-DNT in sand and studies on how the vibrational signatures of 2,4-DNT is modified by interacting with soil particles and environmental conditions is reported. Raman Microspectrometers equipped with 514 nm and 785 nm laser excitation lines were used. The work focused in how the spectroscopic signatures of DNT in contact with Ottawa Sand are affected by the presence of humidity, pH, temperature, UV light and reaction times. Samples of mixtures of sand/2,4-DNT were analyzed by Raman Spectroscopy at 10, 50 and 100% water content and temperatures in range of 40-80 °C. Mixtures were also analyzed at different pH: 4, 7 and 10 and under ultraviolet light at 254 nm. Raman spectra were taken as a function of time in an interval from 24 to 336 hours (two weeks). Characteristic signals of 2,4-DNT were analyzed in different ranges 100-3800 cm^-1, 600-1200 cm^-1, 300-1700 cm^-1 and 2800-3500 cm^-1. The effect of these variables was measured during 45 consecutive days. It was confirmed that the decrease of characteristic vibrational signatures of 2,4-DNT can be attributed to increase of the degradation of 2,4-DNT by the simulated environmental conditions. Spectroscopic characterization of degradation products, both in contact with sand as well as airborne is under way. These results will make possible the development of highly sensitive sensors for detection of explosives materials and correlated with their degradation products in landmines.

Proceedings Article | 10 June 2005 Paper

Raman signatures of TNT in contact with sand particles

Gloria Herrera-Sandoval, Luz Ballesteros, Nairmen Mina, Julio Briano, Miguel Castro, Samuel Hernandez-Rivera

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602439

KEYWORDS: Raman spectroscopy, Explosives, Land mines, Ultraviolet radiation, Crystals, Radiation effects, Spectroscopy, Particles, Statistical analysis, Microscopes

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Proceedings Article | 10 June 2005 Paper

Computational modeling of the adsorption of 2,4-DNT on clay

Carmen Ramos, Liliana Alzate, Yleana Colon, Samuel Hernandez, Nairmen Mina

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602755

KEYWORDS: Minerals, Adsorption, Molecules, Molecular interactions, FT-IR spectroscopy, Spectroscopy, Explosives, Polarization, Chemical species, Infrared spectroscopy

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Proceedings Article | 10 June 2005 Paper

Studies of RDX interactions in soil

Tatiana Luna Pineda, Lidiany Gonzalez, Joel Mendez, Andrea Cabanzo Olarte, Olga Rizo Vivas, Samuel Hernandez-Rivera, N. Mina, Miguel Castro-Rosario

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.603817

KEYWORDS: Carbon, Nitrogen, Soil science, Explosives, Scanning electron microscopy, Particles, Land mines, Oxygen, Chemical analysis, Solid state electronics

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Proceedings Article | 10 June 2005 Paper

Raman microspectroscopy and FTIR crystallization studies of 2,4,6-TNT in soil

Cesar Manrique-Bastidas, Nairmen Mina, Miguel Castro, Samuel Hernandez-Rivera

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.604469

KEYWORDS: Raman spectroscopy, FT-IR spectroscopy, Soil science, Crystals, Soil contamination, Imaging spectroscopy, Explosives, Spectroscopy, Land mines, Crystallography

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Proceedings Article | 10 June 2005 Paper

Ab initio treatment of the behavior of TNT in soil

Liliana Alzate, Carmen Ramos, Samuel Hernandez, Nairmen Mina

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602763

KEYWORDS: Minerals, Explosives, Adsorption, Molecular interactions, Land mines, Soil science, Spectroscopy, Molecules, Solids, Chemistry

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Proceedings Article | 10 June 2005 Paper

Spectroscopic signatures of PETN in contact with sand particles

Luz Ballesteros, Gloria Herrera, Miguel Castro, Julio Briano, Nairmen Mina, Samuel Hernandez-Rivera

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602444

KEYWORDS: Raman spectroscopy, Ultraviolet radiation, Explosives, Explosives detection, Land mines, Spectroscopy, Improvised explosive devices, Solids, Particles, Spectroscopes

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Proceedings Article | 10 June 2005 Paper

FT-IR microspectroscopy of RDX in clay soils

Yleana Colon, Carmen Ramos, Samuel Hernandez, Miguel Munoz, Nairmen Mina

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.602771

KEYWORDS: FT-IR spectroscopy, Minerals, Silicon, Explosives, Land mines, Aluminum, Spectroscopy, Molecules, Imaging spectroscopy, Infrared spectroscopy

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Proceedings Article | 20 May 2005 Paper

Detection and characterization of smokeless powders with ion mobility spectrometry

Neiza Hernandez, Santa Rosario, Samuel Hernandez, Nairmen Mina

Proceedings Volume 5778, (2005) https://doi.org/10.1117/12.602803

KEYWORDS: Calibration, Optical filters, Explosives, Ions, Spectroscopy, Explosives detection, Firearms, Analytical research, Chemical analysis, Polymers

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