Hi there! I'm Marissa. ♥
You can call me Kittie, or Riss, or Marissa.

This is my little bloggish type thing. Sometimes I post art and doodles, but mostly I just post whatever. Basically it's my little art, video games, steampunk, and other random crap dump. [ READ MORE ]
October 7th
6:00 PM
Via
badgraph1csghost:

sillyandquiteawkward-reblog:



so what kind of theoretical tensile strength are we talkin about here because

badgraph1csghost:

sillyandquiteawkward-reblog:

image

so what kind of theoretical tensile strength are we talkin about here because

image

August 8th
6:01 PM
Via

ceruleancynic:

third-eyes:

staceythinx:

Science-inspired necklaces from the Delftia Etsy store

I want all of these, but particularly the phylogenetic tree and the hypercube.

March 27th
12:01 PM
Via
"A 2007 Rhode Island study looked at 30 men and 30 women who had just had coronary-artery bypass surgery and tracked the medications they were given. The researchers were astonished to find that men got pain medications, while women got sedatives. With chronic pain problems, women’s symptoms are often minimized."
—  

Judy Foreman, author of A Nation in Pain: Healing our Biggest Health Problem, looks at the prevalence of chronic pain and how we treat it differently in men and women. (via oupacademic)

I’m horrified but not astonished. 

(via alexdallymacfarlane)

Yeah if the researchers were astonished, that… says a lot about them.

(via moniquill)

From a medical science perspective: the first question that comes to mind is ‘what sedatives were they given?’

Because while it actually wouldn’t surprise me at all if women are getting maltreated medically - systemic discrimination is a thing! - there are also real differences in response to analgesics based on what hormones your system is running on. 

Check out this 2008 article, of which I shall quote the first sentence of the abstract: “Opioid-based narcotics are the most widely prescribed therapeutic agent for the alleviation of persistent pain; however, it is becoming increasingly clear that morphine is significantly less potent in women compared to men.” … Turns out that different hormone levels significantly impact opioid receptor function. 

There are also drugs more effective in women than men. The piece I just linked there talks about drugs that act on kappa-opioid receptors (the odd ducks of the opioid receptor family) but also look up ‘adjuvant analgesics’ - I believe I remember something about GABA-ergic drugs being more effective on pain in women, though I can’t locate it right now and I suspect it might have been women with a particular condition, maybe fibromyalgia? And GABA-ergic drugs are also generally… sedatives. Yeah, it’s complicated. (I ran into this particular area of pharmacology when discovering that cyclobenzaprine didn’t do what it was supposed to do - relax my muscles so I wouldn’t get migraines in the morning due to my hypermobility disorder - but clonazepam does for me what cyclobenzaprine is supposed to.) 

I guess this is all just to amount to a cautionary note in favor of reading a study before drawing conclusions from a headline about a study. There are a lot of things in medicine that desperately need to be criticized, a lot of routines that desperately need to be rewritten, and if we are to make these changes, our opprobrium must find its targets accurately. 

(via manyblinkinglights)

November 6th
8:01 AM
Via
positive-press-daily:

Extinct tree grows anew from ancient jar of seeds unearthed by archaeologists

For thousands of years, Judean date palm trees were one of the most recognizable and welcome sights for people living in the Middle East — widely cultivated throughout the region for their sweet fruit, and for the cool shade they offered from the blazing desert sun.
From its founding some 3,000 years ago, to the dawn of the Common Era, the trees became a staple crop in the Kingdom of Judea, even garnering several shout-outs in the Old Testament. Judean palm trees would come to serve as one of the kingdom’s chief symbols of good fortune; King David named his daughter, Tamar, after the plant’s name in Hebrew.
By the time the Roman Empire sought to usurp control of the kingdom in 70 AD, broad forests of these trees flourished as a staple crop to the Judean economy — a fact that made them a prime resource for the invading army to destroy. Sadly, around the year 500 AD, the once plentiful palm had been completely wiped out, driven to extinction for the sake of conquest.
In the centuries that followed, first-hand knowledge of the tree slipped from memory to legend. Up until recently, that is.
During excavations at the site of Herod the Great's palace in Israel in the early 1960's, archeologists unearthed a small stockpile of seeds stowed in a clay jar dating back 2,000 years. For the next four decades, the ancient seeds were kept in a drawer at Tel Aviv's Bar-Ilan University. But then, in 2005, botanical researcher Elaine Solowey decided to plant one and see what, if anything, would sprout.
"I assumed the food in the seed would be no good after all that time. How could it be?" said Solowey. She was soon proven wrong.
Amazingly, the multi-millennial seed did indeed sprout — producing a sapling no one had seen in centuries, becoming the oldest known tree seed to germinate.
Today, the living archeological treasure continues to grow and thrive; In 2011, it even produced its first flower — a heartening sign that the ancient survivor was eager to reproduce. It has been proposed that the tree be cross-bred with closely related palm types, but it would likely take years for it to begin producing any of its famed fruits. Meanwhile, Solowey is working to revive other age-old trees from their long dormancy.  [x]

positive-press-daily:

Extinct tree grows anew from ancient jar of seeds unearthed by archaeologists

For thousands of years, Judean date palm trees were one of the most recognizable and welcome sights for people living in the Middle East — widely cultivated throughout the region for their sweet fruit, and for the cool shade they offered from the blazing desert sun.

From its founding some 3,000 years ago, to the dawn of the Common Era, the trees became a staple crop in the Kingdom of Judea, even garnering several shout-outs in the Old Testament. Judean palm trees would come to serve as one of the kingdom’s chief symbols of good fortune; King David named his daughter, Tamar, after the plant’s name in Hebrew.

By the time the Roman Empire sought to usurp control of the kingdom in 70 AD, broad forests of these trees flourished as a staple crop to the Judean economy — a fact that made them a prime resource for the invading army to destroy. Sadly, around the year 500 AD, the once plentiful palm had been completely wiped out, driven to extinction for the sake of conquest.

In the centuries that followed, first-hand knowledge of the tree slipped from memory to legend. Up until recently, that is.

During excavations at the site of Herod the Great's palace in Israel in the early 1960's, archeologists unearthed a small stockpile of seeds stowed in a clay jar dating back 2,000 years. For the next four decades, the ancient seeds were kept in a drawer at Tel Aviv's Bar-Ilan University. But then, in 2005, botanical researcher Elaine Solowey decided to plant one and see what, if anything, would sprout.

"I assumed the food in the seed would be no good after all that time. How could it be?" said Solowey. She was soon proven wrong.

Amazingly, the multi-millennial seed did indeed sprout — producing a sapling no one had seen in centuries, becoming the oldest known tree seed to germinate.

Today, the living archeological treasure continues to grow and thrive; In 2011, it even produced its first flower — a heartening sign that the ancient survivor was eager to reproduce. It has been proposed that the tree be cross-bred with closely related palm types, but it would likely take years for it to begin producing any of its famed fruits. Meanwhile, Solowey is working to revive other age-old trees from their long dormancy.  [x]

November 3rd
11:01 AM
Via

gravekat:

softkats:

pizzatomb:

aside from being cissexist the whole XX = female and XY = male thing is Straight-Up Wrong

AFAB people can have XO, XXX, XXXX and XY chromosomes while AMAB people have have XXYY, XYY, and XX chromosomes and since the majority of the population never has their karyotype examined,  they’ll never know that they have one of these chromosomal quirks unless that specific combination has associated symptoms, and not all of them do. you could literally have one of the aforementioned combinations without even knowing it and meanwhile you’re insisting that all AFAB people are XX and that anyone else who has this must also be female

we could also talk about how hormonal patterns for XX persons can naturally and biologically mirror that of a typical XY person, or vis versa, which gives rise to things like androgen insensitivity disorder. here u have it, folks, an whole group of intersex people who have XY chromosomes and testicles and vulva and vagina, all grown naturally, all at the same time. 

the number of people who are intersex mirror the number of people who are born with red hair, but no one goes around trying to say that red isn’t a natural hair colour just because the phenotype doesn’t manifest in the majority of the population. 

gonna ramble for a bit because this was one of my MOST favourite things I learned about in genetics. This was something I’d wanted to know all up until 3rd year and I had asked around my friends/classmates and everyone was like “no way, no, the X and Y chromosomes can’t cross over in meiosis, they’re different chromosomes!” and this always bothered me because. Of course they pair up! They need to pair up, else how would they separate properly? And by that measure, of course some crossing over would have to happen, because that’s just the way it goes.
So some people narrowed it down like oh maybe just the homologous areas can be recombinant. And maybe this was why I was so blown away when I learned this was wrong! That the region with the SRY gene can actually be transferred to the X chromosome - which happens RARELY but it can still happen and it was like!!! The gender distinction was just ripped away and I was kinda like wow. Wow everyone has genes that different people of any gender can have on or off. High or low. And biological sex is part of that. It’s variable. And I just.
(I feel like I should add that people that are born XY female (Swyer syndrome) and people who are born XX male (de la Chapelle syndrome) are born sterile but w/e)
Just
dang
science. genetics. gender. so cool.

October 5th
7:12 PM
Via

infinity-imagined:

The interior of a Eukaryotic Cell, from the outer membrane through the cytosol to the nucleus.  All molecular structures are colored by their function; the cytoskeleton is blue, membranes are green, ribosomes are purple, RNA and spliceosomes are pink, DNA and nucleosomes are yellow.  This cell is producing antibodies, all steps of the process are visualized in order from the bottom to the top of the image. 

      First DNA is transcribed to RNA, and the RNA is spliced before leaving the nucleus through a nuclear poreTranslation begins when the RNA becomes bound to a ribosome, which converts the genetic sequence to a linear protein.  The proteins are folded and sorted inside the Golgi Complex, and then packaged into vesicles by the geodesic Clathrin Assembly.  These vesicles are pulled along microtubules by kinesin motors.  The vesicles then fuse with the outer membrane, and the antibodies are released into the bloodstream.

Illustration by David Goodsell

September 2nd
7:12 PM
Via
openscience:

Researcher controls colleague’s motions in 1st human brain-to-brain interface
University of Washington researchers have performed what they believe is the first noninvasive human-to-human brain interface, with one researcher able to send a brain signal via the Internet to control the hand motions of a fellow researcher.
University of Washington researcher Rajesh Rao, left, plays a computer game with his mind. Across campus, researcher Andrea Stocco, right, wears a magnetic stimulation coil over the left motor cortex region of his brain. Stocco’s right index finger moved involuntarily to hit the “fire” button as part of the first human brain-to-brain interface demonstration. 

openscience:

Researcher controls colleague’s motions in 1st human brain-to-brain interface

University of Washington researchers have performed what they believe is the first noninvasive human-to-human brain interface, with one researcher able to send a brain signal via the Internet to control the hand motions of a fellow researcher.

University of Washington researcher Rajesh Rao, left, plays a computer game with his mind. Across campus, researcher Andrea Stocco, right, wears a magnetic stimulation coil over the left motor cortex region of his brain. Stocco’s right index finger moved involuntarily to hit the “fire” button as part of the first human brain-to-brain interface demonstration. 

August 18th
2:24 PM
Via
missmokushiroku:

It’s known as the Wow! signal. It was discovered during a SETI project—i.e., they were trying to find intelligent aliens. There have been a bunch of debates as to what the hell the Wow! signal actually is, but no real consensus.
There is a non-zero probability that the Wow! signal came from an extraterrestrial intelligence; however, given the strength of the signal and how far it must have traveled, whatever civilization sent it would have to be way, way more advanced than we are. Any messages we could send with the most powerful radio transmitters we have would degrade into static long before they would get to where the Wow! signal may have originated.

missmokushiroku:

It’s known as the Wow! signal. It was discovered during a SETI project—i.e., they were trying to find intelligent aliens. There have been a bunch of debates as to what the hell the Wow! signal actually is, but no real consensus.

There is a non-zero probability that the Wow! signal came from an extraterrestrial intelligence; however, given the strength of the signal and how far it must have traveled, whatever civilization sent it would have to be way, way more advanced than we are. Any messages we could send with the most powerful radio transmitters we have would degrade into static long before they would get to where the Wow! signal may have originated.

July 26th
4:48 AM
Via

go-back-two-sleep:

akiracomplexsound:

UC Berkeley scientists have developed a system to capture visual activity in human brains and reconstruct it as digital video clips. Eventually, this process will allow you to record and reconstruct your own dreams on a computer screen.

more here

This is absolutely fascinating but JESUS CHRIST THE RESULTS SO FAR ARE TERRIFYING

THIS IS AMAZING THO

June 12th
7:12 PM
Via

ianbrooks:

Tea Chemistry Set by Art Lebedev

Adorned with a traditional Gzhel pattern, this ceramic chemistry set has been repurposed as a Russian tea set. The best kind of science is the type you can drink.

(via: yankodesign)

that’s so coOL FJKLSF

April 20th
4:43 PM
Via
I can’t stop laughing at this :’D

I can’t stop laughing at this :’D

March 30th
6:00 AM
Via

MY RESPONSE WHEN PEOPLE ASK WHAT I DO ALL DAY

whatshouldwecallgradschool:

image

credit: katie