Disentangling Sources of Momentum Fluctuations in Xe+Xe and Pb+Pb Collisions with the ATLAS Detector.

High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.

Combination of Searches for Higgs Boson Pair Production in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.

This Letter presents results from a combination of searches for Higgs boson pair production using 126-140  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV recorded with the ATLAS detector. At 95% confidence level (CL), the upper limit on the production rate is 2.9 times the standard model (SM) prediction, with an expected limit of 2.

Studies of the Energy Dependence of Diboson Polarization Fractions and the Radiation-Amplitude-Zero Effect in WZ Production with the ATLAS Detector.

This Letter presents the first study of the energy dependence of diboson polarization fractions in WZ→ℓνℓ^{'}ℓ^{'}(ℓ,ℓ^{'}=e,μ) production. The dataset used corresponds to an integrated luminosity of 140  fb^{-1} of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector. Two fiducial regions with an enhanced presence of events featuring two longitudinally polarized bosons are defined.

Combination of Searches for Resonant Higgs Boson Pair Production Using pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.

A combination of searches for a new resonance decaying into a Higgs boson pair is presented, using up to 139  fb^{-1} of pp collision data at sqrt[s]=13  TeV recorded with the ATLAS detector at the LHC. The combination includes searches performed in three decay channels: bb[over ¯]bb[over ¯], bb[over ¯]τ^{+}τ^{-}, and bb[over ¯]γγ. No excess above the expected Standard Model background is observed and upper limits are set at the 95% confidence level on the production cross section of Higgs boson pairs originating from the decay of a narrow scalar resonance with mass in the range 251 GeV-5 TeV.

Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector.

Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is O(1  GeV). This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using 140  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.

Moral distress in neonatal intensive care unit RNs.

Background: Moral distress is a significant problem for nurses (RNs). It has physical, emotional, and psychological sequelae and a negative impact on the quality, quantity, and cost of patient care. Moral distress leads to loss of moral integrity and job dissatisfaction and is a major cause of burnout and RNs leaving the profession.

Neonatal nurse practitioners provide quality, cost-effective care.

Loretta Ford, the pioneer of nurse practitioners, was the recipient of the Crystal Trailblazer Award from the American College of Nurse Practitioners in February 2003. In her acceptance speech, the stated that "in some ways, the profession had expanded beyond my wildest dreams," but cautioned against the medicalization of the NP role: "The profession is rooted in nursing ..

Immunophenotyping of T lymphocytes by three-color flow cytometry in healthy newborns, children, and adults.

Reagents are now available which allow simultaneous assessment of three different fluorescence wave-lengths on most commercially available flow cytometers. Such three-color analyses provide more information than single- or dual-color analyses. The present study was undertaken in order to establish age-related differences in lymphocyte subpopulations by simultaneously measuring three surface antigens in newborns, children, and adults.

Transition from fetal to extrauterine circulation.

In utero, there is increased pulmonary vascular resistance favoring minimal pulmonary blood flow and right-to-left shunting of blood through the ductus arteriosus and foramen ovale. Delivery initiates a series of complex biochemical and structural changes whereby the neonate assumes those processes critical to survival. This article reviews fetal circulation, the characteristics of the fetal cardiopulmonary system, and the transition from fetal to neonatal circulation.

Pharmacologic treatment of neonatal sepsis: antimicrobial agents and immunotherapy.

Antimicrobial agents and immunotherapies in the management of neonatal sepsis are discussed. The rationale for the selection of the most commonly used antibacterial drugs, their mechanisms of actions, and indications for use are described. Immunotherapies, both those in clinical use and those under investigation, are discussed.

Plasma ammonia levels in very low birth weight preterm infants.

The mean plasma ammonia level at birth of 36 very low birth weight infants (< or = 32 weeks of gestation) was 71 +/- 26 mumol/L (121 +/- 45 micrograms/dl), which is similar to the mean level in preterm infants born at > or = 32 weeks of gestational age. Plasma ammonia levels declined to 42 +/- 14 mumol/L (72 +/- 24 micrograms/dl) at 7 days of age; mean ammonia levels at 14, 21, and 28 days of age were similar to that at 7 days of age and to the mean plasma ammonia level of 14 healthy term infants at birth (45 +/- 9 mumol/L (77 +/- 16 micrograms/dl)).

The effects of insulin on vasoconstrictor responses in pithed rats.

Pressor responses to spinal sympathetic outflow and selected vasoactive agents were examined in control and diabetic Wistar-Kyoto pithed rats. Diabetes was induced by intravenous injection of alloxan (50 mg/kg). One week after the diabetogen, some of the rats were treated with one daily subcutaneous injection of Lente insulin (2 U/100 Gm) for five weeks.

Cardiovascular effects of alloxan diabetes in normotensive and spontaneously hypertensive rats.

The diabetogenic effects of alloxan (50 mg/kg i.v.) were recorded for 6 weeks in normotensive (WKY) and spontaneously hypertensive (SHR) rats.

Ontogenesis of hypertension and responsiveness to antihypertensive agents in spontaneously hypertensive rats.

Heart rate, systolic blood pressure and responses of spontaneously hypertensive rats (SHR) to guanethidine, timolol, minoxidil and phentolamine were monitored at 2, 6 and 12 months of age. All antihypertensive agents produced significant and comparable reductions in systolic blood pressure at 6 and 9 months of age, at which time systolic blood pressures were maximally elevated, but had very little effect at 2 months when pressures were only marginally higher. However, at 12 months of age, SHR maintained their response to guanethidine and timolol but responded less well to minoxidil and, especially, to phentolamine.

Tachycardia in spontaneously hypertensive and normotensive rats after fusaric acid and bupicamide.

1. The effects of the dopamine-beta-hydroxylase inhibitors bupicamide, fusaric acid, FLA-63 and U-14,624 on blood pressure and heart rate of spontaneously hypertensive rats were examined. 2.