LitCovid-sentences  

PMC:7594251 / 7712-9368 JSONTXT 5 Projects

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Id Subject Object Predicate Lexical cue
T57 0-137 Sentence denotes NMR is a versatile tool for studying biomolecules of all kinds and is a unique regarding the biophysical analysis of drugs [72,73,74,75].
T58 138-383 Sentence denotes The basic feature of NMR lies in the fact that it inductively detects the Larmor precession of individual nuclei (i.e., spins) which vary because of different atomic, electronic, and chemical environments (i.e., structural atomic relationships).
T59 384-468 Sentence denotes Initially, the sample is placed in a strong, static, and homogeneous magnetic field.
T60 469-575 Sentence denotes Because spins contain angular momentum, they exhibit Larmor precessions around this static magnetic field.
T61 576-743 Sentence denotes A net magnetization builds up over time as the spin population (represented by different energy levels) is minutely differential in the presence of the magnetic field.
T62 744-886 Sentence denotes These levels are dictated by the spin quantum number and can be roughly thought of as different orientations with respect to the static field.
T63 887-1103 Sentence denotes Subsequently, induced electromagnetic fields at radiofrequencies (called RF pulses) are applied transverse to the plane of the static magnetic field, and the net or bulk magnetization undergoes an effective rotation.
T64 1104-1283 Sentence denotes The bulk coherence moves into the transverse plane and the subsequent coherently precessing magnetization vectors induce a detectable alternating voltage in the NMR receiver coil.
T65 1284-1425 Sentence denotes This tiny alternating voltage is amplified and converted from an analog time domain signal to a frequency reading via Fourier transformation.
T66 1426-1656 Sentence denotes These signals are recorded in response to the induced radio-wave pulses (Figure 2) and are representative of the Larmor frequencies that are converted into normalized values termed chemical shifts in order to be field independent.