Skip to main content

Home/ Honors Scientific Research 2023-2024/ Group items tagged heat

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Sean Nash

Microwaving an insecticide restores its mosquito-killing power - 2 views

www.sciencenews.org/...to-microwave-insecticide-spray

deltamethrin pesticide mosquito insecticide DDT crystals crystalline structure biochemistry environment evolution ecology chemistry heat potential research idea biology engineering environmental science HSR HSR-2023 HSR-2025

shared by Sean Nash on 25 May 23 - No Cached
  • Heating an insecticide can give it new life.
    • Sean Nash
      Sean Nash on 25 May 23
       
      Wait, what? Do say more.....
  • Microwaving the insecticide deltamethrin rearranges its crystal structure but doesn’t change its chemical composition. The rearrangement renews deltamethrin’s ability to kill mosquitoes that have become resistant to the insecticide, researchers report April 21 in Malaria Journal.
    • Sean Nash
      Sean Nash on 25 May 23
       
      Hmmmm... something similar to this smells like: feasibility.
  • The microwave worked just as well, but Kahr cautions that people shouldn’t use the same microwave for heating food and insecticides.
    • Sean Nash
      Sean Nash on 25 May 23
       
      Ha! No kidding??
  • ...6 more annotations...
  • insecticide resistance is a growing problem
  • It is encouraging that heated insecticide killed highly resistant mosquitoes, says Hemingway, who directs the Infection Innovation Consortium, a public-private effort to find new ways to combat infectious diseases. But, she says, “this is not something we can take and use that tomorrow.”
    • Sean Nash
      Sean Nash on 25 May 23
       
      OK.... this is how you can find an opening (not saying THIS ONE is necessarily, but, when you see language like: "we can't really do it just yet," that is a screaming opportunity to see what we MIGHT be able to add to that.
  • It’s not certain that the heat-treated deltamethrin would retain its more potent crystal structure through the net-making process.
  • Kahr’s team is working on incorporating the heat-treated crystal into nets.
  • “There are all kinds of social and cultural things that you could propose from a scientific perspective that wouldn’t be welcomed by a community of homeowners.”
    • Sean Nash
      Sean Nash on 25 May 23
       
      Again... this reads: "potential research opportunity."
  • Kahr and colleagues previously discovered that heating deltamethrin changed its crystal structure, which let it work faster
Grant Reed

Study Finds Carrying Pollen Heats Up Bumble Bees, Raising New Climate Change Questions - 3 views

www.enn.com/...g-new-climate-change-questions

potential research idea ENN HSR HSR-2023 biology pollen bees climatechange

shared by Grant Reed on 24 May 23 - No Cached
  • This new understanding of active bumble bee body temperatures raises questions about how these species will be impacted by a warmer world due to climate change.
    • Grant Reed
      Grant Reed on 24 May 23
       
      Trying out the highlight feature. This might be an interesting research topic.
Xander Kleiber

Energy-efficient computing | MIT Energy Initiative - 2 views

energy.mit.edu/...energy-efficient-computing

potential research idea computer science engineering HSR HSR-2023

shared by Xander Kleiber on 05 Jun 23 - No Cached
Sean Nash liked it
  • 1’s are literally thrown away, and that wasted energy is dissipated as heat.
    • Xander Kleiber
      Xander Kleiber on 05 Jun 23
       
      In logic gates specifically, because there are cases where a 1 goes in and a 0 can come out, that 1 (directly represented by electrical voltage) gets wasted in the computation and is released as heat.
  • the inputs are 1-0 and 0-1, and the output is 1-0. That setup is wasteful: An incoming 1 is lost during the computation. The researchers solve that problem by retaining the extra inputs as “garbage bits” that carry useless information (see the bottom example). The 1-0 order doesn’t matter, but now the number of 1’s is preserved after the computation.
    • Xander Kleiber
      Xander Kleiber on 05 Jun 23
       
      Seems like a great way to solve the issue. However, I don't see anywhere else in the article any sort of actual circuit design/implementation of said solution...
  • On the energy front, the goal is to conserve all information—not just the 1’s but the 0’s as well. Their approach is based on “reversible computing,” an idea first proposed in the 1970s.
    • Xander Kleiber
      Xander Kleiber on 05 Jun 23
       
      Expanded upon later.
  • ...1 more annotation...
  • “If you can play everything backwards, then no energy has escaped during your computation,” says Demaine.
    • Xander Kleiber
      Xander Kleiber on 05 Jun 23
       
      So in reversible computing, if an algorithm can be reversed, that means no information (and therefore no 1's, or measures of voltage) are wasted, resulting in an even lower production of waste.
  • Xander Kleiber on 05 Jun 23
     
    Overall, this seems like a decent course of study. After all, mentioned throughout the article is something called "Landauer's limit," which is a limit to the efficiency of computing devices using the current, wasteful methods. Also mentioned briefly in the article is that we are continually getting much closer to this limit. This makes it a timely issue, along with the fact that not many people have elaborated on its implications or tried implementing it.
  • Sean Nash on 06 Jun 23
     
    This is really interesting... though I'm sure I would benefit from a back-and-forth conversation to make sure I'm understanding what I think I am.
katherine-medina

Marine Drugs | Free Full-Text | Microalgae Photo-Protectants and Related Bio-Carriers L... - 0 views

www.mdpi.com/487

shared by katherine-medina on 14 Sep 23 - No Cached
Sean Nash liked it
  • This review focuses on the use of these microalgae compounds obtained by UV stimulation and takes advantage of their natural UV-resistant characteristics to potentially apply them as an alternative for UV protection products.
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      Can I put this on a plant in order to mitigate heat damage?
  • pproximately 90–99% of the solar UV radiation energy that reaches the Earth’s surface is UV-A
  • whereas only 1–10% is UV-B [4]. Both UV-A and UV-B are responsible for one of the biggest concerns related to UV radiation, which is skin cancer
  • ...28 more annotations...
  • The mechanisms leading to skin damage are not fully understood and may derive from the generation of ROS and subsequent lipid peroxidation
  • To prevent photodamage, organisms have evolved to provide biochemical and physical defenses to UV by synthesizing robust bioactive compounds
  • Some algae species synthesize substances with chemical structures that can absorb UV radiation as well as inhibit actions on melanin synthesis
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      Which algaes
  • Microalgae can produce organic metabolites, such as sporopollenin, scytonemin, and MAAs to mention a few, and these metabolites have the purpose to protect the microalgae from UV radiation while allowing visible radiation involved in photosynthesis to pass through
  • two marine microalgae Pavlova lutheri, currently known as Diacronema lutheri, and Odontella aurita
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      After I get through the other ones I will get to you my pretty
  • UV-Resistant Microalgae
  • Marine organisms, including eukaryotic microalgae and cyanobacteria, during evolution, have developed physiological and biochemical traits for defense and/or tolerance to UV rays
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      Come back to this part
  • This research also mentioned the Antarctic microalgae Chaetoceros dichaeta, Phaeocystis antarctica, and Polarella glacialis, these were subjected to acclimation to photosynthetically active radiation (PAR) and showed resistance to UV-B rays.
  • It was found that the tolerant species contained substantial amounts of acetolysis-resistant residue
  • So far, several species, e.g., Coelastrella rubescens, Coelastrella terestris, Enallax coelastroides, Scotiella chlorelloidea, Ankistrodesmus spiralis, Chlorella minutissima, Chlorella sorokiniana, and Pseudococcomyxa sp. have been reported as rich sources of MAAs
  • They are abundant in various aquatic and terrestrial environments and are known for being eco-sustainable compounds since they are the outcome of the evolution of algae. Unlike their synthetic counterparts used unconventional sunscreens, there are no possibilities for pollution caused by them [22]. Thus, algal metabolites shape the safety and sustainability profiles of commercial sunscreens [22].
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      How long can the algae last on the skin or leaf of a plant
  • The results obtained point out different resistance and defense mechanisms of the four microalgae in response to UV-B irradiance and suggest that the strain of Nostoc sp. tested is the most suitable for surviving under the high UV irradiation [33]
  • Certain microalgae produce organic metabolites, such as sporopollenin, scytonemin, and MAAs as well as other UV-absorbing substances to counteract the harmful effects of UV radiation and protect themselves while allowing visible radiation involved in photosynthesis to pass through
  • The best known photoprotective response in marine organisms is the production or accumulation of UV-absorbing compounds, including MAAs as the most common compounds with such properties, but there are also others, such as scytonemin, carotenoids, alganean, and various secondary metabolites
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      photoprootective means protecting the skin
  • f low molecular weight, commonly found in marine environments. These compounds have absorption maxima in the UV region between 310 and 360 nm, they can dissipate radiation as heat without producing ROS. Under fixed light, MAA biosynthesis seems the most effective photoprotective mechanism
  • For these reasons, they potentially can prevent UV-induced skin damage
  • It was reported that species of microalgae that were highly tolerant to UV radiation had substantial amounts of sporopollenin. This compound functions as an antimicrobial agent, confers rigidness to the cell wall, and may further protect from UV rays by increasing the optical density, whereas species containing little or no sporopollenin were highly UV radiation susceptible
  • However, the potential of microalgae as topical photoprotectants has not been fully exploited, since there are not a lot of studies regarding this application.
  • Other reports determine that scytonemin is suspected to be synthesized from metabolites of aromatic amino acid biosynthesis
    • katherine-medina
      katherine-medina on 14 Sep 23
       
      No set decision on how it is created
  • Alginate is a
  • ydration
  • However, some microalgae have a great ability to overcome or counteract different stresses such as intense solar UV radiation, this has been happening over the years and with the evolution of microalgae, some examples of defense and/or tolerance mechanisms are: DNA repair, synthesis of antioxidants, and enzymatic/non-enzymatic compounds, such as MAAs and scytonemin to counteract the harmful effects of UV radiation
  • Scytonemin is a yellow-brown lipid soluble sheath pigment that absorbs maximally in the UV-A and UV-C regions, but with some absorbance in the UV-B region. It has an in vivo absorption maximum of 370 nm.
  • tigate UV damage induced.
  • photosensitizers, their antioxidant
  • V
  • ed.
  • t
  • katherine-medina on 14 Sep 23
     
    A recent article showing the potential use of microalgae as a sunscreen.
  • Sean Nash on 14 Sep 23
     
    Yes..... let's chat this one out!
katherine-medina

Anti-Oxidative and Anti-Inflammatory Effects of Ginger in Health and Physical Activity:... - 1 views

www.ncbi.nlm.nih.gov/...PMC3665023

Ginger cancer-fighting HSR-2023 botany biology

shared by katherine-medina on 18 Jun 23 - No Cached
izzy kelly liked it
  • the rhizome
  • Ginger has staring potential for treating a number of ailments including degenerative disorders (arthritis and rheumatism), digestive health (indigestion, constipation and ulcer), cardiovascular disorders (atherosclerosis and hypertension), vomiting, diabetes mellitus, and cancer.
    • katherine-medina
      katherine-medina on 18 Jun 23
       
      It has the potential for it, so there may not be many studies on these different things that ginger can supposedly do. So it makes me Infinitely more curious to look and see if there are other studies that actually have information about these said claims.
  • Furthermore, it has antimicrobial potential as well which can help in treating infectious diseases.[2
  • ...17 more annotations...
  • The bioactive molecules of ginger like gingerols have shown antioxidant activity in various modules
  • Inflammatory disorders such as gastritis, esophagitis, and hepatitis, which are caused not only by infectious agents such as viruses, bacteria, and parasites but also by physical and chemical agents like heat, acid, cigarette smoke, and foreign bodies, are recognized as risk factors for human cancer
  • This study aimed to review the current evidence on ginger effects as an anti-inflammatory and anti-oxidative.
  • es.[2
  • 6-Shogaol has exhibited the most potent antioxidant and anti-inflammatory properties in ginger, which can be attributed to the presence of alpha, beta-unsaturated ketone moiety
  • Furthermore, feeding ginger to rats at 1% w/w during administration of malathion
    • katherine-medina
      katherine-medina on 18 Jun 23
       
      Wow, so they fed the rats pesticides than ginger
  • so it can possibly value in treatment of Parkinson's disease.[17]
    • katherine-medina
      katherine-medina on 18 Jun 23
       
      Really cool
  • This effect was improved by a treatment with 1% dietary ginger 1 month in rats which suggest that ginger may have protective role against the ethanol induced hepatotoxicity.
  • could be useful in preventing acute liver injury
  • Habib et al. showed that ginger extract can reduce the elevated expression of NFκB and TNF-α in rats with liver cancer
  • howed that gingerols can inhibit LPS-induced COX-2 expression while shogaol containing extracts has no effect on COX-2 expression
  • Ginger and its bioactive molecules are effective in controlling the extent of colorectal, gastric, ovarian, liver, skin, breast, and prostate cancers
    • katherine-medina
      katherine-medina on 18 Jun 23
       
      Wow it can do a lot.
  • They observed that [6]-gingerol inhibits TRAIL-induced NF-κB activation by impairing the nuclear translocation of NF-κB, suppresses cIAP1 expression, and increases TRAIL-induced caspase-3/7 activation
  • Inhibition of angiogenesis in the mouse skin is the mechanism of ginger for treating of skin cancer.
  • However, ginger significantly lowered blood glucose, serum total cholesterol, LDL, VLDL, and triglycerides, and raised HDL in hyperglycemic rats, in models that are diabetic, deficient in the apolipoprotein E gene or those that have been fed a high lipid diet.
  • ethanolic extract of ginger reduced body weights and levels of glucose, insulin, total cholesterol, LDL cholesterol, triglycerides, free fatty acids, and phospholipids in high-fat diets.
  • CONCLUSIONS
    • katherine-medina
      katherine-medina on 18 Jun 23
       
      Overall a good synopsis on what ginger can do.
1 - 6 of 6
Showing 20▼ items per page