TP Chemical technology 253 Article 209 Fourier transform infrared spectroscopy 204 QD Chemistry 177 human 163 chemistry 156 Technology: general issues 154 Scanning electron microscopy 149 controlled study 145 Research & information: general 141 QC Physics 107 Humans 100 Biology, life sciences 92 History of engineering and technology 88 nonhuman 86 infrared spectroscopy 83 unclassified drug 83 spectroscopy 74 male 72 article 68 X ray diffraction 67 female 66 nuclear magnetic resonance spectroscopy 64 Q Science (General) 59 Research and information: general 58 adult 55 procedures 52 Chemistry 49 X ray photoelectron spectroscopy 49 Spectroscopy, Fourier Transform Infrared 47