Fever in the Trauma Bay: A Marker for Greater Risk of Adverse Outcomes.

Previous work identified a sub-group of trauma patients at risk for bacteremia who presented with signs of infection, including fever. A majority were older adult falls who had early onset bacteremia. Fever in the trauma bay is associated with a greater risk of adverse outcomes and identifies patients who might benefit from early initiation of interventions for sepsis.

Phase Separation in Cold Para-H_{2} D_{2} Clusters.

Low temperature phase separation in mixtures of ^{3}He and ^{4}He isotopes is a unique property of quantum fluids. Hydrogen has long been considered as another potential quantum liquid and has been predicted to be superfluid at T≤1  K, well below freezing temperature of ≈14  K. Phase separation has also been predicted in mixtures of para-H_{2} and D_{2} at temperatures ≤3  K.

A joinpoint analysis examining trends in firearm injuries at six us trauma centers from 2016 to 2022.

Background: There is an epidemic of firearm injuries in the United States since the mid-2000s. Thus, we sought to examine whether hospitalization from firearm injuries have increased over time, and to examine temporal changes in patient demographics, firearm injury intent, and injury severity.

Methods: This was a multicenter, retrospective, observational cohort study of patients hospitalized with a traumatic injury to six US level I trauma centers between 1/1/2016 and 6/30/2022.

An analysis of missed injuries at a level 1 trauma center with a tertiary survey protocol.

Background: Tertiary surveys can help identify missed injuries, but how and when to conduct them remains uncertain. This study aimed to evaluate the outcomes of a policy requiring tertiary survey completion within 24 h post-admission.

Methods: A retrospective review was performed with a pre-intervention time-period of 8/1/2019-1/31/2020, where tertiary surveys were performed prior to discharge (n = 762).

Outcomes in elderly fall victims: what happens after hospital discharge?

Background: Falls are the leading cause of trauma-related death in the elderly, but postdischarge outcomes' data are lacking. The purpose of this study was to evaluate 12-month postdischarge mortality and causes of death.

Methods: A retrospective review was conducted of patients 65 years and older admitted for a fall and discharged alive.

Ro-vibrational Spectra of (para-H ) -CH in He Droplets.

In this work, we report on the infrared spectroscopic study of clusters of CH molecules with up to N=80 para-hydrogen molecules assembled inside He droplets. Upon increase of the number of the added para-hydrogen molecules up to about N=12, both the rotational constant, B, and the origin frequency of the υ band of CH decrease gradually. In the range of 6 ≤N≤12, the spectra indicate some abrupt changes of B and υ with both values being approximately constant at N≥12.

Infrared spectra in the 3 μm region of ethane and ethane clusters in helium droplets.

Ethane and ethane clusters (N ≈ 10(2)-10(4)) were studied inside helium droplets with infrared laser spectroscopy. The spectra were measured in the 2880-3000 cm(-1) range, which covers the ν5, ν(8+11), and ν7 vibrational bands of ethane. Partially resolved rotational fine structure in the spectrum of the monomer reveals solvent-induced band origin blue shifts that are each approximately 1 cm(-1).

Sizes of large He droplets.

Helium droplets spanning a wide size range, N(He) = 10(3)-10(10), were formed in a continuous-nozzle beam expansion at different nozzle temperatures and a constant stagnation pressure of 20 bars. The average sizes of the droplets have been obtained by attenuation of the droplet beam through collisions with argon and helium gases at room temperature. The results obtained are in good agreement with previous measurements in the size range N(He) = 10(5)-10(7).

Fast nuclear spin conversion in water clusters and ices: a matrix isolation study.

Single water molecules have been isolated in solid Ar matrices at 4 K and studied by rovibrational spectroscopy using FTIR in the regions of the ν(1), ν(2), and ν(3) modes. Upon nuclear spin conversion at 4 K, essentially pure para-H(2)O was prepared, followed by subsequent fast annealing generating ice particles. FTIR studies of the vapor above the condensed water upon annealing to T ≥ 250 K indicate fast reconversion of nuclear spin to equilibrium conditions.

Temperature dependence of the Raman spectra of liquid parahydrogen.

Vibrational and rotational spectra of liquid para-H(2) at temperature T=14-26 K and of solid at T=6-13 K have been obtained using coherent anti-Stokes Raman scattering technique. The vibrational frequency in the liquid increases with temperature by about 2 cm(-1) and the shift scales with the square of the sample's density. An extrapolation of the vibrational frequency in the metastable para-H(2) liquid below the freezing point is discussed.

Interchange-tunneling splitting in HCl dimer in helium nanodroplets.

Midinfrared spectra of HCl dimers have been obtained in helium nanodroplets. The interchange-tunneling (IT) splitting in the vibrationally excited state of the bonded H-Cl stretching band (nu(2)) in (H(35)Cl-H(37)Cl) dimers was measured to be 2.7+/-0.