New Constraint on the Local Relic Neutrino Background Overdensity with the First KATRIN Data Runs.

We report on the direct search for cosmic relic neutrinos using data acquired during the first two science campaigns of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity molecular tritium gas source are analyzed by a high-resolution MAC-E filter around the end point at 18.57 keV.

µRA-A New Compact Easy-to-Use Raman System for All Hydrogen Isotopologues.

We have developed a new compact and cost-efficient Laser-Raman system for the simultaneous measurement of all six hydrogen isotopologues. The focus of this research was set on producing a tool that can be implemented in virtually any existing setup providing in situ process control and analytics. The "micro Raman (µRA)" system is completely fiber-coupled for an easy setup consisting of (i) a spectrometer/CCD unit, (ii) a 532 nm laser, and (iii) a commercial Raman head coupled with a newly developed, tritium-compatible all-metal sealed DN16CF flange/Raman window serving as the process interface.

Accurate Reference Gas Mixtures Containing Tritiated Molecules: Their Production and Raman-Based Analysis.

Highly accurate, quantitative analyses of mixtures of hydrogen isotopologues-both the stable species, H, D, and HD, and the radioactive species, T, HT, and DT-are of great importance in fields as diverse as deuterium-tritium fusion, neutrino mass measurements using tritium β-decay, or for photonuclear experiments in which hydrogen-deuterium targets are used. In this publication we describe a production, handling, and analysis facility capable of fabricating well-defined gas samples, which may contain any of the stable and radioactive hydrogen isotopologues, with sub-percent accuracy for the relative species concentrations. The production is based on precise manometric gas mixing of H, D, and T.

Bound on 3+1 Active-Sterile Neutrino Mixing from the First Four-Week Science Run of KATRIN.

We report on the light sterile neutrino search from the first four-week science run of the KATRIN experiment in 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are analyzed by a high-resolution MAC-E filter down to 40 eV below the endpoint at 18.57 keV.

Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN.

We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic end point at 18.

Increasing generic prescribing: a resident educational intervention.

Background And Objectives: Future physicians are urged to balance effectiveness and cost in their prescribing of medications. This study determined whether educational sessions for residents together with a "Resident Report Card" changed residents' prescribing of generic medications in both commercial and Medicaid patient panels, compared with regional performance of physicians in practice in the community.

Methods: Twenty-four family medicine residents providing care for 1,038 (600 Medicaid and 438 commercial) members (or 31,140 total member months) received biannual profiles of their prescribing patterns and participated in four training sessions related to prescription profiling within a regional health plan.

The development of resident "report cards" in the context of managed care education.

This article describes the development of residents' report cards as one component of a curriculum on physician profiling for primary care residents. Thirty-two first-year residents matriculating into family practice, internal medicine, pediatrics, and obstetrics-gynecology residency programs in 1998 were profiled. The patient information in the report cards was limited to data on a panel of Medicaid patients initially seen in the resident ambulatory care clinics.

Training tomorrow's clinicians today--managed care essentials: a process for curriculum development.

Objective: To develop a managed care curriculum for primary care residents.

Design: This article outlines a 4-stage curriculum development process focusing on concepts of managed care organization and finance. The stages consist of: (1) identifying the curriculum development work group and framing the scope of the curriculum, (2) identifying stakeholder buy-in and expectations, (3) choosing curricular topics and delivery mechanisms, and (4) outlining the evaluation process.