Scanning electron microscopy 292 scanning electron microscopy 127 Article 117 human 106 Fourier transform infrared spectroscopy 103 Humans 88 controlled study 83 Technology: general issues 82 chemistry 70 X ray diffraction 65 History of engineering and technology 61 procedures 58 Field emission microscopes 56 nonhuman 55 Microscopy, Electron, Scanning 54 Research & information: general 48 Field emission scanning electron microscopy 46 surface property 40 Scanning 39 in vitro study 37 Differential scanning calorimetry 36 High resolution transmission electron microscopy 34 Morphology 34 Thermogravimetric analysis 32 unclassified drug 32 Energy dispersive spectroscopy 31 female 31 male 30 pH 28 particle size 28