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#sas
Latest posts tagged with #sas on Bluesky
Posts tagged #sas
REMINDER: ❗Tomorrow❗at 12 pm EST is the 2026 Virtual Early Career and Student Slam!
Register to attend: https://bit.ly/4sLIzED
View the presenters here: https://bit.ly/4sn4sJt
#SAS #Spectroscopy #SLAM2026 #StudentsInScience #EarlyCareer #SciX
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Nuevo modelo de carrera profesional del SAS beneficiará a más de 44.600 profesionales en Almería: Leer #SAS #CarreraProfesional #Andalucía
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Abstract: This paper provides the first temporally resolved visualization of the formation and decay profiles of Thermally induced reflection of sound (THORS) barriers in ambient air, revealing the spatiotemporal characteristics of these novel acoustic barriers. In this work, a 532 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser coupled with an intensified charge-coupled device (ICCD) is used to Raman image N2 in ambient air, thereby allowing for the visualization of the spatial dynamics of the air density variations at these THORS barriers. Studies were conducted at various ambient temperatures and with air turbulence across the beam path revealing no change in barrier size or shape under typical environmental disturbance conditions. Raman images of a barrier formed by a repetitively pulsed CO laser reveal an abrupt barrier density change between the optically depleted region and the surrounding air, with the slope of the imaged barrier density increasing rapidly during the first 20 ms of barrier formation, indicative of the predicted increase in barrier abruptness associated with enhanced THORS efficiency. As seen in previous temporal studies of THORS barrier efficiencies, these images reveal that multiple laser pulses at an optimized optical frequency are capable of achieving maximum continuous suppression efficiencies through molecular depletion in the optically excited region. These imaging studies revealed that the maximum barrier efficiency required a minimum of eight laser pulses to achieve the desired barrier density change and depletion, agreeing with previous temporal studies that showed in maximum suppression efficiency after 16 ms with one ms excitation laser pulses. Furthermore, visualization of the barrier size revealed that thermal redistribution of the photothermally excited molecules resulted in a THORS barrier approximately 50% larger than the excitation beam width and that this barrier remains constant for as long as 15 ms after the final laser pulse and at laser powers between 50 and 250 W.
New from Applied Spectroscopy!
Spatiotemporal Visualization of the Formation and Decay of Thermally Induced Optical Reflection of Sound (THORS) Barriers in Ambient Air
Read more: https://doi.org/10.1177/00037028251413279
#SAS #Spectroscopy #Raman #THORS #N2
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SAS Innovate 2026 Showcases Innovations in Health Care AI and Analytics #United_States #Life_Sciences #SAS #Grapevine #AI_Health
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Projekt sa podľa firmy v súčasnosti nachádza vo fáze povinného hodnotenia (tzv. veľkej EIA), v rámci ktorej sa pripravuje hodnotiaca správa pre ministerstvo životného prostredia (MŽP).
Tón: : mierne negatívny
#slovakia #gdelt #eko #sas #šurany […]
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Don't forget, the Spring SciX will be taking place April 14 - 16 at the University of Exeter, UK. For more information, please visit: https://bit.ly/3PDD8sK #SAS #SpringSciX
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Scandinavian (SAS) A330-343 (LN-RKR) in special 80 Year Anniversary livery at Boston Logan Airport (BOS).
📸: Darryl Sarno/ Airways
#sas #airbus #avgeek
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Ben Roberts-Smith arrested over alleged war crimes
#ausnews #vicnews #afp #adf #sas #war #crime #arrest
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This is the 4Corners episode, called Killing Field, which is very much worth the watch if you haven't seen it, about #AUS #SAS #warCrimes in #Afghanistan. www.abc.net.au/news/2020-03...
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Keep Calm — We Are Coming
The NZSAS in action in Afghanistan, 2009–2021
Ron Crosby
#nzsas #oratiabooks #sas #afghanistan #nzhistory
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SAS Achieves Prestigious Recognition on CRN's AI 100 List for Third Consecutive Year #USA #SAS #CARY #CRN #AI_100
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Abstract: The increasing concern about the presence of pesticides in vegetable leaves has underscored an urgent need for real-time, nondestructive, and accurate detection methods. Traditional methods are reliable but laboratory-based, costly, and unsuitable for field monitoring. In this study, we propose an efficient learning model pipeline that uses hyperspectral reflectance signatures to detect pesticide residue in plant leaves. We extract a comprehensive set of 39 domain-specific features based on vegetation indices, red-edge metrics, spectral statistics, and derivative profiles. To enhance the performance, use a multilayer perceptron to extract more features. A feature fusion module is used to combine both domain-specific features and features extracted by a multilayer perceptron. Further refinement is achieved through a feed-forward attention scoring module that dynamically weights important features. The efficiency of the system is evaluated using an enhanced extra trees classifier, which shows superior classification performance and stability across different feature formats. With cross-validation, our model achieves an accuracy of 94.69%, significantly outperforming conventional classifiers such as convolutional neural networks, support vector machines, and ensemble models such as random forest and extra trees. This framework not only improves interpretability and performance but also provides a foundation for a real-time, on-site pesticide monitoring solution.
New from Applied Spectroscopy!
Advanced #Hyperspectral Signature Processing for Chemical Stress Detection in Vegetable Leaves Using Hierarchical Feature Extraction and Enhanced Ensemble Model
More: https://doi.org/10.1177/00037028251411953
#SAS #Spectroscopy #pesticides #classification #monitoring
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Fun With #SAS ODS Graphics: #Easter Egg Cookie (Polygon + Vector + Scatter + Spline Plots) 🐇 communities.sas.com/t5/Graphics-...
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🤝 Member Benefit Spotlight:
Another big perk you get when joining SAS is the ability to develop your career through different training and networking opportunities. Learn more about why you should join today: bit.ly/3LRexPF
#SAS #Spectroscopy #MemberBenefits #Networking #ProfessionalGrowth
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Your leadership, innovation, and dedication continue to advance the field of spectroscopy worldwide.
#SAS #Spectroscopy #Fellows #Awards #ScientificExcellence
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Abstract: There is a need for in-field actinide measurements in support of nuclear forensic, safeguards, and environmental monitoring missions. Traditional methods of inorganic/elemental analysis, such as inductively coupled plasma mass spectrometry (ICP-MS), have high operational overheads, making these platforms ill-suited for this task. The liquid sampling–atmospheric pressure glow discharge (LS-APGD) ionization source is a proven microplasma ionization source with significantly reduced operational overhead as compared to ICP-MS; however, most studies to date have focused on coupling the LS-APGD to an ultrahigh resolution Orbitrap mass spectrometer. While the Orbitrap mass spectrometer is a benchtop instrument, it is quite complex with a large footprint and requires extremely low mass analyzer pressures. The Advion ExpressionL compact mass spectrometer (CMS) is a compact, easily transported single quadrupole mass spectrometer platform that was previously coupled with the LS-APGD to measure multielement/metal solutions, albeit not actinides. To this end, this manuscript reports the optimization of the LS-APGD with the Advion ExpressionL CMS mass spectrometer platform specifically for in-field actinide (uranium and thorium) measurements. This is the first report on the optimization of the dual-electrode LS-APGD on the CMS, including a modified ion sampling geometry. This also includes the first analysis of thorium using the LS-APGD, regardless of mass spectrometer coupling. After establishing that the LS-APGD and the mass spectrometer operations could be optimized independently, the LS-APGD discharge conditions were optimized with a design of experiments approach, with the mass spectrometer parameters optimized by a full factorial study. Once fully optimized, limits of detection of 0.2 ng total analyte mass were found for both uranium and thorium, below the EPA requirements for drinking water.
New from Applied Spectroscopy!
Development of a Field-Deployable #Mass #Spectrometry System for Nuclear Forensics Applications Using Liquid Sampling–Atmospheric Pressure Glow Discharge as an Ion Source
https://doi.org/10.1177/00037028251405294
#SAS #Spectroscopy #thorium #uranium #detection
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✈️ SAS odwołuje aż 1000 lotów.
Skandynawska linia ogranicza siatkę połączeń w kwietniu. Powodem są gwałtownie rosnące ceny paliwa lotniczego.
Sprawdź szczegóły👇
tiny.pl/tj9_tvdjv
#lotnictwo #SAS #linieLotnicze
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Just a heads up to warmongers in the ALP - media reports that 100 international law experts have signed an open letter confirming that the American strikes on Iran could constitute #warcrimes @albomp.bsky.social @senatorwong.bsky.social Get our ADF out NOW #Auspol #AUKUS #SAS USA & Israel are losing
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Scandinavian Airlines (SAS) is commemorating its 80th anniversary, with an Airbus A330-300 in special commemorative livery incorporating the colours of the Scandinavian flag.
aviationsourcenews.com/sas-marks-80...
#SAS #Scandinavian #avgeek #aviation #aviationdaily #Aviationnews
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Australia dragged into Middle Eastern war by @albomp.bsky.social #auspol #Albo answering his Zionist masters? #SAS
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@albomp.bsky.social joins #US-Israel war on #Iran without telling Australian public. #auspol
@grogsgamut.bsky.social #SAS @joneshowdareyou.bsky.social @sarahkendzior.bsky.social @politico.com Whats going on @australianlabor.bsky.social ? @pauleric70.bsky.social @reuters.com @diplomatofnight.com
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1946 saw the very first #SAS flight from Stockholm to New York. To mark the 80th anniversary of the Scandinavian airline , the company have had one of their Airbus A330 aircraft painted in a special livery by #iac_ltd
at #ShannonAirport
My thanks to Adrian Kissane for his pic
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Sponsored by the Coblentz Society and the Society for Applied Spectroscopy (SAS).
#SAS #Spectroscopy #SLAM2026 #StudentsInScience #EarlyCareer #SciX
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Abstract: Chromium-doped zinc selenide (Cr:ZnSe) crystals are the gain media of choice for mid-infrared lasers operating over a 1.9–3.4 µm spectral range. In this study, we used laser-induced breakdown spectroscopy (LIBS) of Cr:ZnSe polycrystalline materials to improve the sensitivity of detecting chromium concentration in the laser-active materials. The fundamental harmonic of a Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) laser was used as an excitation source. After calibration of the LIBS signal, we calculated that chromium's limit of detection (LOD) was 30 parts per million (ppm). Normalization of the Cr(I) intensity peak at 357.9 nm by the square root of the Zn(I) peak at 636.2 nm reduced the LOD to 20 ppm and increased the coefficient of determination to R² ≈ 0.98. These results demonstrate the potential of LIBS for microscale mapping of dopant distributions in laser crystals and for on-site monitoring of material quality during fabrication.
New from Applied Spectroscopy!
Application of Laser-Induced Breakdown Spectroscopy for Measuring Chromium Concentration in Chromium-Doped Zinc Selenide (Cr:ZnSe) Laser Materials
Read more: https://doi.org/10.1177/00037028251401252
#SAS #Spectroscopy #LIBS #Zinc #selenide #chromium #detection
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📖Preparación OPE #SAS 2026 / 2027
Desde #UGT Servicios Públicos Andalucía, ofertamos las siguientes preparaciones de oposiciones para el SAS:
- Temario común
- TCAE
- Celador
- Auxiliar Administrativo
- Administrativo
#Esenciales
🧐Más información👇
ugtserviciospublicosandalucia.es/index.php/fo...
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