The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point Observatory

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in July 2014. It pursues three core programs: APOGEE-2,MaNGA, and eBOSS. In addition, eBOSS contains two major subprograms: TDSS and SPIDERS. This paper describes the first data release from SDSS-IV, Data Release 13 (DR13), which contains new data, reanalysis of existing data sets and, like all SDSS data releases, is inclusive of previously released data. DR13 makes publicly available 1390 spatially resolved integral field unit observations of nearby galaxies from MaNGA,the first data released from this survey. It includes new observations from eBOSS, completing SEQUELS. In addition to targeting galaxies and quasars, SEQUELS also targeted variability-selected objects from TDSS and X-ray selected objects from SPIDERS. DR13 includes new reductions ofthe SDSS-III BOSS data, improving the spectrophotometric calibration and redshift classification. DR13 releases new reductions of the APOGEE-1data from SDSS-III, with abundances of elements not previously included and improved stellar parameters for dwarf stars and cooler stars. For the SDSS imaging data, DR13 provides new, more robust and precise photometric calibrations. Several value-added catalogs are being released in tandem with DR13, in particular target catalogs relevant for eBOSS, TDSS, and SPIDERS, and an updated red-clump catalog for APOGEE.This paper describes the location and format of the data now publicly available, as well as providing references to the important technical papers that describe the targeting, observing, and data reduction. The SDSS website, http://www.sdss.org, provides links to the data, tutorials and examples of data access, and extensive documentation of the reduction and analysis procedures. DR13 is the first of a scheduled set that will contain new data and analyses from the planned ~6-year operations of SDSS-IV.PostprintPeer reviewe

Lipophilic toxin profiles detected in farmed and benthic mussels populations from the most relevant production zones in Southern Chile

Lipophilic toxins associated with diarrhoeic toxins were found in Mytilus chilensis (Blue mussels) and Aulacomya ater (Ribbed mussels). These shellfish samples were collected from Chiloe Island, Southern Chile. The samples were tested by liquid chromatography-tandem mass spectrometry (LC-MS/MS). After the analysis, four toxins were found: DTX-1, DTX-3, YTX and PTX. All toxins were identified by comparing their HPLC retention times with those of analytical standards and confirmed by LC-MS/MS. Dinophysistoxin-1 (DTX-1) and dinophysistoxin-3 (DTX-3) toxins were the major components within the mussel extracts. Nevertheless, the percentages of these toxins differed depending on the area they were collected from and/or the sampling date. The levels detected in Butacheuques Island for okadaic acid (OA) was 267 ± 3.5 μg OA eq kg-1 (p < 0.05) and for DTX-3 was 183.4 ± 7.5 μg kg-1 in ribbed mussels. Pectenotoxin (PTX) and yessotoxin (YTX) were the toxins detected in minor proportions in the tox

Global Resilience in Plastic Surgery Study (GRIPS): Resilience is Associated with Lower Burnout Rates

Background:. Burnout has earned notoriety in medicine. It affects medical students, residents and surgeons, causing a decrease in career satisfaction, quality of life, and increased risk of depression and suicide. The effect of resilience against burnout is yet unknown in plastic surgery trainees. Methods:. A survey was sent via email to the members of plastic surgery societies (ICOPLAST) and the trainees from (ASPS) Resident Council from November 2021 through January 2022. The data included: demographics, training program characteristics, physician wellness resources, and single item Maslach-Burnout Inventory and Connor-Davidson Resilience Scale questionnaire. Results:. One-hundred seventy-five plastic surgery trainees responded to the survey. Of these, 119 (68%) trainees from 24 countries completed the full survey. Most respondents 110 (92%) had heard of physician burnout, and almost half of respondents (45%) had burnout. The average Connor-Davidson Resilience Scale score varied significantly amongst trainees self-reporting burnout and those who did not (28.6 versus 31.3, P = 0.008). Multivariate logistic regression demonstrated that increased work hours per week were associated with an increased risk of burnout (OR = 1.03, P = 0.04). Higher resilience score (OR = 0.92; P = 0.04) and access to wellness programs (OR = 0.60, P = 0.0004) were associated with lower risk of burnout. Conclusions:. Burnout is prevalent across plastic surgery trainees from diverse countries. Increased work hours were associated with burnout, whereas access to wellness programs and higher resilience scores were “protective.” Our data suggest that efforts to build resilience may mitigate burnout in plastic surgery trainees