This document outlines important safety procedures and guidelines for science labs and field work. It emphasizes being responsible for your own safety and others by knowing safety rules. Personal protective equipment like safety goggles and closed-toe shoes are required in labs. Hazards like chemicals, glassware, electricity, fire and animals require specific safety protocols. Labs must be kept neat and clean and any accidents or injuries reported immediately.
This is the presentation teachers reviewed with students the first week of school. We adapted this through our discussion to fit our elementary lab environment.
This is the presentation teachers reviewed with students the first week of school. We adapted this through our discussion to fit our elementary lab environment.
Richard's entangled aventures in wonderlandRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
The ASGCT Annual Meeting was packed with exciting progress in the field advan...
Lab Safety.pptx
1. SAFETY IN THE LAB
AND IN THE FIELD
SCIENCE, TECHNOLOGY, ENGINEERING, ARTS AND MATHEMATICS
STEAM
2.
3. A. THINGS TO PONDER
LAB SAFETY
•You are responsible for your own safety and the
safety of others
•To avoid accidents, you must know your
responsibilities
•You are expected to behave appropriately
5. WHAT NOT TO WEAR!!
Contact lens
Tank top/Cropped shirt
slippers
Sandals, open-toed shoes, and shoes with woven uppers, shall not be worn
because of the danger of spillage of corrosive or irritating chemicals. DO
NOT wear loose or torn clothing due to the potential for ignition, absorption of
chemicals, and potential entanglement in machinery
6. LET’S WATCH THIS VIDEO FIRST
• Fire extinguisher basics for science laboratory | Lab safety
https://www.youtube.com/watch?v=g3vlmioGjMQ
7. B. THINGS TO PONDER
LAB SAFETY
• Keep the lab NEAT. Clean up when finished, report spills
to avoid slip and fall hazard
• If you are or another student is injured, inform your
teacher immediately
• DO NOT take any food or drink in the lab, nor take any
chemicals out of the lab
8. B. THINGS TO PONDER
FIELD SAFETY
•Leave natural areas as you found them
•Stay with your group
•Use proper accident procedures
•Inform your teacher about a hazard in the
environment or if accidents occur
10. SAFETY SYMBOLS
•The following symbols are used
throughout the use of the lab. Remember
to keep in mind all the safety rules and
they must be followed at all times
11. DRESS CODE
• Wear safety goggles, if chemicals get in the eyes flush water immediately for 15 minutes
• Contact lenses are not allowed
• Do not look directly to intense light source
• Wear gloves as directed
• Wear an apron or lab coat always
• Tie back long har, secure loose clothes, remove jewelry and acrylic nails when working
with flames
• Do not wear open toe shoes or sandals
12. GLASSWARE AND SHARP OBJECTS
• Do not use chipped or cracked glassware
• Use heat-resistant glassware for heating materials
• Notify teacher for glass breaks
• Use extreme care when handling sharp or pointed instruments
• Do not cut an object while unsupported in your hands
• Place object to be cut on proper cutting surface
• CUT OBJECTs AWAY FROM YOUR BODY!
13. CHEMICAL SAFETY
• If a chemical gets on your skin, clothes or eyes—rinse right away for 15 minutes
• Do not clean up spilled chemicals unless teacher tells you
• Do not inhale any gas or vapors unless directed by teacher
• “wafting” – if you are instructed to note the odor of a substance, wave the fumes toward
nose using hands
• Handle materials with vapor in well-ventilated area
• Keep hands away from face while working on any activity
14. ELECTRICAL SAFETY
• Do not use equipment with frayed electric cord or loose plugs
• Do not use electrical equipment near water or when clothing or hands are wet
• Hold the plug housing when plugging or unplugging equipment
15. HEATING AND FIRE SAFETY
• Be aware of any source of flames (heating coil, hot plates) before working with flammable
substances
• Know location of fire extinguisher
• Know school’s fire evacuation routes
• If clothing catches fire, WALK to water source—do not run!
• Do not leave hot plate unattended while turned on or cooling
• Use tongs when heating objects
• Equipment must be cool before storage
16. PLANT AND ANIMAL SAFETY
• Do not eat any part of the plant
• Do not pick any wild plant unless instructed by teacher
• Handle animals only under teacher’s direction
• Treat animals carefully and respectfully
• Wash hands thoroughly with soap and water after handling plant or
animal
17. CLEAN UP
• Keep surfaces clean and protective equipment as well
• Dispose of hazardous materials or sharp objects ONLY if directed by
teacher
• Wash hand thoroughly with soap and water before leaving the lab
after experiments
• DO NOT LEAVE THE LAB DIRTY