Publications by authors named "K G Cantwell"
Article Synopsis
- Evidence shows that human-induced waste significantly impacts deep-ocean ecosystems, with debris being found even in remote areas during initial explorations.
- A study in the tropical Atlantic and Caribbean Sea recorded various types of marine debris, including plastic, metal, and glass, at depths ranging from 250 to over 6000 meters, observed using submersibles.
- The discovery of 139 debris items—such as a ladder, clothing, and single-use packaging—highlights the severity of pollution in these deep waters and underscores the importance of understanding its effects on ocean sustainability.
Large Room Temperature Bulk DNP of C via P1 Centers in Diamond.
J Phys Chem C Nanomater Interfaces
October 2022
We use microwave-induced dynamic nuclear polarization (DNP) of the substitutional nitrogen defects (P1 centers) in diamond to hyperpolarize bulk C nuclei in both single crystal and powder samples at room temperature at 3.34 T. The large (>100-fold) enhancements demonstrated correspond to a greater than 10 000-fold improvement in terms of signal averaging of the 1% abundant C spins.
View Article and Find Full Text PDFRoom temperature DNP of diamond powder using frequency modulation.
Solid State Nucl Magn Reson
December 2022
Dynamic nuclear polarization (DNP) is a method of enhancing NMR signals via the transfer of polarization from electron spins to nuclear spins using microwave (MW) irradiation. In most cases, monochromatic continuous-wave (MCW) MW irradiation is used. Recently, several groups have shown that frequency modulation of the MW irradiation can result in an additional increase in DNP enhancement above that obtained with MCW.
View Article and Find Full Text PDFObjective: To describe the demographic profile and clinical case mix of older adults following calls for an emergency ambulance in rural Victoria, Australia.
Methods: Retrospective cohort study using ambulance electronic patient care records from rural-dwelling older adults (≥65 years old) who requested emergency ambulance attendance during 2017.
Results: A total of 84 785 older adults requested emergency ambulance attendance, representing a rate of 278 per 1000 population aged ≥65 years.
Background And Aims: Take-home naloxone, a key response to heroin overdose, may be compromised by the way in which overdose cases are coded in EMS dispatch systems as call-takers direct callers at cardiac arrest events against using any medication. We examined the ways in which confirmed heroin overdose cases attended by ambulances are coded at dispatch to determine whether incorrect coding of overdoses as cardiac arrests may limit the use of take-home naloxone.
Methods: We conducted a retrospective analysis of coded ambulance clinical records collected in Victoria, Australia from 2012-2017.