Publications by authors named "Madison K"

We report the performance of a magnetically silent optically pumped cesium magnetometer with a statistical sensitivity of 3.5 pT/ at 1 Hz and a stability of 90 fT over 150 s of measurement. Optical pumping with coherent, linearly-polarized, resonant light leads to a relatively long-lived polarized ground state of the cesium vapour contained in a measurement cell.

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  • The origin of homochirality in biological organisms is still a mystery, with some theories suggesting it may have extraterrestrial roots involving chiral molecules in space.
  • A new study shows that specific forms of neutral amino acids can exhibit significant asymmetry in how they break down when exposed to circularly polarized light, challenging previous beliefs about the insignificance of this effect.
  • The results indicate that this dissociation could lead to a notable enantiomeric excess, potentially playing a major role in the development of homochirality in biological systems.
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Despite the growth of servant leadership research, current understandings of how to teach servant leadership are limited. Further, current approaches often reinforce heroic notions of servant leadership that do not adequately prepare learners to engage in leadership within their own lives. Against this backdrop, we integrate critical pedagogical approaches within servant leadership education.

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  • Molecules with short-lived radioactive nuclei can help advance understanding in fundamental symmetries, astrophysics, nuclear structure, and chemistry.
  • Recent progress in creating and controlling complex molecules, along with advancements in producing radioactive species globally, presents a unique opportunity for precision measurements and studies of these extreme nuclei.
  • This manuscript reviews the significance of radioactive molecules, highlights recent advances in various scientific fields, describes production facilities, and offers future perspectives on this emerging area of research.
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Burkitt lymphoma (BL) is an aggressive, high-grade B-cell lymphoma common in children and young adults. Despite being frequently discovered in extranodal sites, BL rarely occurs in the pancreas. We present a case of a patient with BL presenting as obstructive jaundice.

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Purpose: Patients treated with ongoing opioid therapy may be at an increased risk of respiratory depression or death, which may be mitigated through prompt administration of naloxone. The Centers for Disease Control (CDC) guidelines for prescribing opioids in primary care settings recommend patients treated with ongoing opioid analgesic therapy be offered a coprescription of naloxone based on total oral morphine milligram equivalents per day or concurrent benzodiazepine therapy. Opioid overdose risk is dose-dependent, yet other patient-specific factors contribute to this risk.

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Objective: The aim was to explore the relationship between changes in regional economic conditions and quality of care-preventable hospitalization or death among older patients with diabetes at Veterans Health Administration (VHA), safety-net system for veterans.

Subjects: VHA patients aged 65 years and older with a diabetes diagnosis between July 2012 and June 2014, who had at least 1 primary care visit in the past year.

Measures: County-level and state-level public data were used to characterize regional health insurance coverage and affluence surrounding the VHA facilities.

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Objectives: To evaluate the association between regional market factors and experience with patient-provider communication in primary care services of safety net hospitals.

Study Design: A retrospective cohort study with 933,407 patient experience survey respondents from 128 Veterans Health Administration (VHA) hospitals between fiscal years 2013 and 2016.

Methods: Patient responses on 5 patient-provider communication questions were used to evaluate quality of care.

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Do nonprofit hospitals provide enough community benefits to justify their tax exemptions? States have sought to enhance nonprofit hospitals' accountability and oversight through regulation, including requirements to report community benefits, conduct community health needs assessments, provide minimum levels of community benefits, and adhere to minimum income eligibility standards for charity care. However, little research has assessed these regulations' impact on community benefits. Using 2009-11 Internal Revenue Service data on community benefit spending for more than eighteen hundred hospitals and the Hilltop Institute's data on community benefit regulation, we investigated the relationship between these four types of regulation and the level and types of hospital-provided community benefits.

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In this work, we address the advantages, limitations, and technical subtleties of employing field programmable gate array (FPGA)-based digital servos for high-bandwidth feedback control of lasers in atomic, molecular, and optical physics experiments. Specifically, we provide the results of benchmark performance tests in experimental setups including noise, bandwidth, and dynamic range for two digital servos built with low and mid-range priced FPGA development platforms. The digital servo results are compared to results obtained from a commercially available state-of-the-art analog servo using the same plant for control (intensity stabilization).

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In many respects, employers are well positioned to take a leading role in helping create a culture of health. Employers have access to many programs that could be beneficial to their employees' health. The potential for financial gains related to health improvement may motivate employers to offer these programs, and if the gains are realized, they may help finance the programs.

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We present a dual-species effusive source and Zeeman slower designed to produce slow atomic beams of two elements with a large mass difference and with very different oven temperature requirements. We demonstrate this design for the case of (6)Li and (85)Rb and achieve magneto-optical trap (MOT) loading rates equivalent to that reported in prior work on dual species (Rb+Li) Zeeman slowers operating at the same oven temperatures. Key design choices, including thermally separating the effusive sources and using a segmented coil design to enable computer control of the magnetic field profile, ensure that the apparatus can be easily modified to slow other atomic species.

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We present a design and characterization of optically transparent electrodes suitable for atomic and molecular physics experiments where high optical access is required. The electrodes can be operated in air at standard atmospheric pressure and do not suffer electrical breakdown even for electric fields far exceeding the dielectric breakdown of air. This is achieved by putting an indium tin oxide coated dielectric substrate inside a stack of dielectric substrates, which prevents ion avalanche resulting from Townsend discharge.

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Background: Since there is still an unmet need for potent adjuvant strategies for renal cancer patients with high progression risk after surgery, several targeted therapies are currently evaluated in this setting. We analyzed whether inclusion criteria of contemporary trials (ARISER, ASSURE, SORCE, EVEREST, PROTECT, S-TRAC, ATLAS) correctly identify high-risk patients.

Methods: The study group comprised 8873 patients of the international CORONA-database after surgery for non-metastatic renal cancer without any adjuvant treatment.

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Objective: To identify the current scope of Tele-Derm, the types of dermatological complaints experienced in the rural primary care setting, and to assess the quality of patient clinical information provided to the consultant dermatologist.

Design: Retrospective case analysis.

Setting: Tele-Derm National is an initiative of the Australian College of Rural and Remote Medicine and has been providing online educational and consultational services in dermatology to doctors Australia-wide for over a decade.

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We present a method of phase locking any number of continuous-wave lasers to an optical frequency comb (OFC) that enables independent frequency positioning and control of each laser while still maintaining lock to the OFC. The scheme employs an acousto-optic modulator (AOM) in a double-pass configuration added to each laser before its light is compared by optical heterodyne with the comb. The only requirement is that the tuning bandwidth of the double-pass AOM setup be larger than half the OFC repetition rate.

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Purpose: The primary goal of urinary fistulae repair is to improve continence and quality of life. Irradiated patients are predisposed to development of bladder outlet dysfunction (BOD), defined as bladder neck contracture or stress urinary incontinence. Here, we review our experience with gracilis flap repairs for rectourinary fistulae (RUF) and urinary cutaneous fistulae (UCF) in patients who underwent pelvic radiation.

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Background: The current TNM system for renal cell carcinoma (RCC) merges perirenal fat invasion (PFI) and renal vein invasion (RVI) as stage pT3a despite limited evidence concerning their prognostic equivalence. In addition, the prognostic value of PFI compared to pT1-pT2 tumors remains controversial.

Objective: To analyze the prognostic significance of PFI, RVI, and tumor size in pT1-pT3a RCC.

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Objectives: To analyze clinicopathological features and survival of surgically treated patients with renal cell carcinoma (RCC) ≥ 80 years of age in comparison with patients between the ages of 60 and 70 years.

Materials And Methods: The data for 2,516 patients with a median follow-up of 57 months were retrieved from a multinational database (Collaborative Research on Renal Neoplasms Association [CORONA]), including data for 6,234 consecutive patients with RCC after radical or partial nephrectomy. Comparative analysis of clinicopathological features of 241 octogenarians (3.

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We create atom-molecule dark states in a degenerate Fermi gas of ^{6}Li in both weakly and strongly interacting regimes using two-photon Raman scattering to couple fermion pairs to bound molecular states in the ground singlet and triplet potential. Near the unitarity point in the BEC-BCS crossover regime, the atom number revival height associated with the dark state abruptly and unexpectedly decreases and remains low for magnetic fields below the Feshbach resonance center at 832.2 G.

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Employer interest in offering financial incentives for healthy behaviors has been increasing. Some employers have begun to tie health plan-based rewards or penalties to standards involving tobacco use or biometric measures such as body mass index. The Patient Protection and Affordable Care Act attempts to strike a balance between the potential benefits and risks of wellness incentive programs by permitting these incentives but simultaneously limiting their use.

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When Escherichia coli grows in the presence of DNA-damaging agents such as methyl methanesulphonate (MMS), absence of the full-length form of Translation Initiation Factor 2 (IF2-1) or deficiency in helicase activity of replication restart protein PriA leads to a considerable loss of viability. MMS sensitivity of these mutants was contingent on the stringent response alarmone (p)ppGpp being at low levels. While zero levels (ppGpp°) greatly aggravated sensitivity, high levels promoted resistance.

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Purpose: We analyzed the distinct clinicopathological features and prognosis of patients with renal cell carcinoma age 40 years or less compared to a reference group of patients 60 to 70 years old.

Materials And Methods: Overall 2,572 patients retrieved from a multicenter international database comprised of 6,234 patients with surgically treated renal cell carcinoma were included in this retrospective study. Clinical and histopathological features of 297 patients 40 years old or younger (4.

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