Metastability of Liquid Water Freezing into Ice VII under Dynamic Compression.

The ubiquitous nature and unusual properties of water have motivated many studies on its metastability under temperature- or pressure-induced phase transformations. Here, nanosecond compression by a high-power laser is used to create the nonequilibrium conditions where liquid water persists well into the stable region of ice VII. Through our experiments, as well as a complementary theoretical-computational analysis based on classical nucleation theory, we report that the metastability limit of liquid water under nearly isentropic compression from ambient conditions is at least 8 GPa, higher than the 7 GPa previously reported for lower loading rates.

Spinal Anesthesia or General Anesthesia for Hip Surgery in Older Adults.

Background: The effects of spinal anesthesia as compared with general anesthesia on the ability to walk in older adults undergoing surgery for hip fracture have not been well studied.

Methods: We conducted a pragmatic, randomized superiority trial to evaluate spinal anesthesia as compared with general anesthesia in previously ambulatory patients 50 years of age or older who were undergoing surgery for hip fracture at 46 U.S.

Risk factors for prolonged air leak and need for intervention following lung resection.

Objectives: Prolonged air leak (PAL; >5 days) following lung resection is associated with postoperative morbidity. We investigated factors associated with PAL and PAL requiring intervention.

Methods: Retrospective review of all patients undergoing lobectomy, segmentectomy or wedge resection from 2016 to 2019 at our institution.

Role of age and sex on dual tasking using a treadmill desk while performing cognitive tests.

Background: Treadmill desks have been used extensively to increase physical activity and decrease sedentary time in the work environment. However, dual tasking, such as simultaneously walking and performing a cognitive task, may result in diminished performance in one or both tasks.

Research Question: Do age and sex impact ability to dual task while using a treadmill desk at a preferred walking speed?.

Photoelectron Spectroscopic Study of Ascorbate and Deprotonated Ascorbate Anions Using an Electrospray Ion Source and a Cryogenically Cooled Ion Trap.

Reactive oxygen species (ROS) in biological systems are formed through a variety of mechanisms. These species are very reactive and have been associated with many diseases, including cancer and cardiovascular disease. One way of removing ROS from the body is through the use of radical scavengers, which are compounds capable of giving up an electron to neutralize the ROS yet form a stable radical species themselves.

Mandatory Nodal Evaluation During Resection of Clinical T1a Non-Small Cell Lung Cancers.

Background: Recommendations for intraoperative lymph node evaluation are uniform regardless of whether a primary tumor is clinical T1a or T2a according to TNM 8th edition for stage I non-small cell lung cancer (NSCLC). We quantified nodal disease risk in patients with T1a disease (≤1 cm).

Methods: The National Cancer Database was queried for clinical T1a N0 M0 primary NSCLCs ≤1 cm undergoing lobectomy with mediastinal nodal evaluation from 2004-2014.

An Intentionally Designed Walking Program for Seniors Results in Enhanced Community Connection.

Social connection is vital for older adults' physical and psychological well-being, yet nearly one third of them report feeling lonely. The purpose of this study was to evaluate the influence of a monthly walking program (walking once a month for 8 months) on older adults' community connection. Older adults (Mage = 78.

Do cropping system and fertilization rate change water-stable aggregates associated carbon and nitrogen storage?

Soil aggregates not only store carbon (C) and nitrogen (N) but hold a critical role in determining the nutrients supply, crop productivity, and climate change mitigation. However, the impact of cropping system and N fertilization on aggregate-associated C and N in both topsoil and subsoil remains unclear. Here, we assessed the effect of cropping systems (wheat-soybean vs.

Straining to Put the Pieces Together: The Molecular Structure of ()-1-Chloro-1,2-difluoroethylene-Acetylene from Microwave Spectroscopy.

The microwave, rotational spectrum between 5.6 and 19.7 GHz of the gas-phase heterodimer formed between acetylene and ()-1-chloro-1,2-difluoroethylene is obtained using both broadband, chirped-pulse and narrow band, Balle-Flygare Fourier transform microwave spectrometers.

Clofazimine for treatment of multidrug-resistant non-tuberculous mycobacteria.

Background: /QUESTION: Nontuberculous mycobacteria (NTM) infections are increasingly detected but difficult to cure given complex drug-resistance patterns. Select U.S.

Preferences Toward COVID-19 Diagnostic Testing Features: Results From a National Cross-Sectional Survey.

Purpose: Describe preferences toward COVID-19 testing features (method, location, hypothetical monetary incentive) and simulate the effect of monetary incentives on willingness to test.

Design: Online cross-sectional survey administered in July 2020.

Subjects: 1,505 nationally representative U.

Germline ERBB3 mutation in familial non-small-cell lung carcinoma: expanding ErbB's role in oncogenesis.

Lung cancer is the commonest cause of cancer deaths worldwide. Although strongly associated with smoking, predisposition to lung cancer is also heritable, with multiple common risk variants identified. Rarely, dominantly inherited non-small-cell lung cancer (NSCLC) has been reported due to somatic mutations in EGFR/ErbB1 and ERBB2.

Incidence and Progression of Hallux Valgus: A Prospective Cohort Study.

Objective: Hallux valgus is a common and disabling condition. The objective of the present study was to identify factors associated with hallux valgus incidence and progression.

Methods: Participants were from a population-based prospective cohort study, the Clinical Assessment Study of the Foot.

Endobronchial actinomycosis in a child.

Actinomycosis is a rare, indolent and invasive infection caused by Actinomyces species. Pulmonary actinomycosis is very rarely seen in the paediatric population. The classic radiological presentation of thoracic involvement of actinomycosis includes lower lobe consolidation, empyema and periostitis of the ribs.

"Do You Smoke?" Physician-Patient Conversations About Smoking and Lung Cancer.

This study examined how physicians initiated and navigated conversations about smoking with patients with lung cancer. While there are numerous health benefits associated with smoking cessation in patients with advanced lung cancer, conversations about smoking cessation are infrequent and often lack tangible cessation support. We conducted a qualitative inductive content analysis on transcripts of conversations (n = 58) recorded during an initial appointment between a physician and a standardized patient (SP).

Location, Location, Location: Accelerometer Placement Affects Steps-Based Physical Activity Outcomes During Pregnancy and Postpartum.

As pregnancy progresses, physical changes may affect physical activity (PA) measurement validity. n = 11 pregnant women (30.1 ± 3.

The electron affinity of the uranium atom.

The results of a combined experimental and computational study of the uranium atom are presented with the aim of determining its electron affinity. Experimentally, the electron affinity of uranium was measured via negative ion photoelectron spectroscopy of the uranium atomic anion, U. Computationally, the electron affinities of both thorium and uranium were calculated by conducting relativistic coupled-cluster and multi-reference configuration interaction calculations.

Study of the Reaction of Hydroxylamine with Iridium Atomic and Cluster Anions ( = 1-5).

Elucidating the multifaceted processes of molecular activation and subsequent reactions gives a fundamental view into the development of iridium catalysts as they apply to fuels and propellants, for example, for spacecraft thrusters. Hydroxylamine, a component of the well-known hydroxylammonium nitrate (HAN) ionic liquid, is a safer alternative and mimics the chemistry and performance standards of hydrazine. The activation of hydroxylamine by anionic iridium clusters, Ir ( = 1-5), depicts a part of the mechanism, where two hydrogen atoms are removed, likely as H, and Ir(NOH) clusters remain.

Sensory and Physicochemical Quality, Residual Fungicide Levels and Microbial Load in 'Florida Radiance' Strawberries from Different Disease Control Treatments Exposed to Simulated Supply Chain Conditions.

Strawberries are greatly appreciated for their flavor and health-promoting properties. However, current agricultural and postharvest handling practices may result in decreased fruit quality. The objective of this work was to determine the effect of conventional or reduced fungicide applications on the quality of 'Florida Radiance' strawberries exposed to supply chain conditions.