Featured Posts (3478)

Sort by

Deep #Ferguson History...

"Just miles away from the scene of the protests in Ferguson lies the grave of Dred Scott at the Calvary Cemetery on West Florissant Avenue. Born a slave in Virginia, Scott sued in a St. Louis court for his freedom. The case went to the Supreme Court, resulting in a landmark 1857 decision that African Americans were not citizens of the United States and therefore had no rights to sue in federal courts. The court described blacks as "beings of an inferior order, and altogether unfit to associate with the white race, either in social or political relations, and so far inferior that they had no rights which the white man was bound to respect." The Dred Scott Decision is considered by many to be the worst decision in the Supreme Court’s history."

My take: "Citizen's United" might give it a run for it's money!
Democracy Now!:
Ferguson Protests Erupt Near Grave of Ex-Slave Dred Scott, Whose Case Helped Fuel U.S. Civil War
PBS: Dred Scott case: the Supreme Court decision

Read more…

Herman Lowe had less than an hour to live. The District Attorney was wearing his best suspenders and stove pipe pants. His Stetson top hat and drink sat on the table before him. His date Marissa, a shapely woman half his age with her plump build encased in a corseted dress with petticoats, snuggled up next to him; his arm about her shoulders.

The Pretender was his getaway. A spot where no one knew him. Even better, it wasn’t a nightclub his wife or her girlfriends frequented.

He kissed Marissa wetly on the lips and winked, “Be right back, sugar. I gotta pay my water bill,” scooted his considerable girth out from behind the booth and sauntered to the gentlemens room.

Herman pushed the swinging door open into a restroom lit by oil lamps, and walked over to a stall. As he relieved himself, he reflected pleasantly over his last courtroom win. Hed managed to convince a jury that the accused, Sonny Peters, had swindled fifty folks out of their life savings with a bogus gold-mining investment scheme.

It was a difficult case. Over the years Sonny had used a plethora of different names and disguises. But Lowes barristers, under his tutelage, had pieced together Sonnys paper trail and turned it into hard evidence.

Another victory. Ten years and Ive only lost three cases. Could be Monterrey is ready for its first Black mayor. Herman Lowe, Monterreys first Black District Attorney, was a man who believed in firsts.

He buttoned his fly, pulled the chain to flush the toilet, and walked across the bathroom to the basin to wash his hands. Lowe poured water from a vase into the washbasin, and picked up one of the towels beside it to dry his hands.

The door swung open, and he looked up but no one came in. Herman shrugged and finished drying his hands.

The temperature in the room suddenly dipped from seventy to forty degrees. Lowe felt a suffocating claustrophobia, as if he were being forced inside a coffin. He clutched the towel, breathing hard, his heart thumping. By now it was so cold he could see his exhaled breath. Footsteps echoed over the bathroom tiles, slow and measured. They stopped just beside him.

A plume of breath floated toward him. With a cry of terror, he bolted for the door. And a shadow blocked his path.

****

Lowes rich ebony skin had faded to a sickly gray. That was the first thought that came to the detective’s mind, as he stared down at the body. Curtis Dubois fingered the toothpick in his mouth. He was a lean, muscular man, his skin the color of brown-sugar, with close-cut hair and dark eyes. He sported a mustache over his full lips, and his youthful face belied his thirty-two years.

The blood-spattered corpse on the bathroom floor, was all that was left of District Attorney Herman Lowe. He was the third victim. The first victim, Xavier Wolf, a Native American banker, had been found dead in Pandoras box, a brothel. Paul Potts, a Black school principal, was discovered on the floor of the Rat Pack Casino.

Curtiss partner, Harold Polanski, a lanky White man with green eyes, tussled black hair and an aquiline nose, shook his head ruefully. “Poor bastard.”

Four other constables their blue suit-coats with bronze buttons, steeple caps, and watches-chains, setting them apart from the homicide detectives, were questioning The Pretenders patronsthose who hadnt fled as soon as they heard the law was coming—looking for clues of whod killed Lowe.

A constable joined them in the bathroom holding Lowes ID. “Found this in his pocket. Doesn’t look much like him now, does it?”

Copyright Valjeanne Jeffers All rights reserved. Cover art and design by Quinton Veal.

Available now at: www.vjeffersandqveal.com

Amazon Kindle and Print

Barnes and Noble Nook

Read more…

Kilobot...

Science: How Stuff Works

Fish gotta school, birds gotta flock, and robots, it seems, gotta swarm. At least, that’s what they’re doing on the workbench of Harvard University computer scientists Michael Rubenstein and Radhika Nagpal and Massachusetts Institute of Technology computer scientist Alejandro Cornejo. Each of their 1024 robots, called Kilobots, is a three-legged disk the size of a U.S. quarter, sporting a single curl of metallic hair. En masse, they form a mechanical multitude an order of magnitude larger than any robot swarm ever built—a possible precursor to future robot work squads choreographed for chores such as cleaning up oil spills.

“That is a beautiful accomplishment,” says Hod Lipson, a roboticist at Cornell University who was not involved with the work. “Really getting a thousand robots to perform in sort of perfect synchrony.”



The idea for swarms of robots working together comes from nature. Army ants link themselves together to form rafts and bridges, and neurons in a brain fire off signals that collectively create intelligence. They do it all by following collective algorithms—shared sets of rules and instructions—and taking their cues from what’s going on around them. Each individual is “just doing its own thing, locally. But fantastic things emerge out of their collective behavior,” Lipson says.



Science: Heads up for the gathering robot swarm, Angus Chen

Read more…

A Century of Quantum Mechanics...



In this lecture, Prof David Gross talks all about quantum mechanics. Today quantum mechanics is one of the cornerstones of modern physics. But how did it all start? Gross discusses the roots of quantum mechanics and the problems that lead to the creation of the theory. This inevitably turns into a discussion of the work of the early quantum pioneers such as Bohr, Einstein, Pauli, Dirac and others. Finally, the present status of quantum mechanics is introduced in the light of the outstanding problems that modern physicists face. PhysicsDatabase.com
Read more…

Carbon Inside...

The structure of the carbon nanomaterials employed, where the diameter of the semiconducting SWCNTs is in the 0.8–1.2 nm range. (Courtesy: Nano Lett.)

A new solar cell made from carbon nanotubes (CNTs) that is twice as good at converting sunlight into power than the best previous such cells has been unveiled by a team of researchers in the US. The National Renewable Energy Laboratory (NREL) has already independently certified the performance of the device – a first for a CNT-based solar cell.



Thin-film photovoltaic materials are better than conventional solar-cell materials (such as silicon) because they are lighter, more flexible and cheaper to make. They work by absorbing photons from sunlight and converting these into electron–hole pairs (or excitons). To generate electric current, an electron and hole must be rapidly separated before the two particles have a chance to come back together and be reabsorbed into the material. In solar cells, the exciton must quickly travel to another layer in the device (where the charge separation will occur) for the best light-absorption efficiencies.



Single-walled carbon nanotubes (SWCNTs) are ideal as thin-film photovoltaics because they absorb light across a wide range of wavelengths from the visible to the near-infrared and possess charge carriers (electrons and holes) that move quickly. However, most thin-film cells containing SWCNTs have so far suffered from limited current and voltage, and therefore poor power-conversion efficiencies.



Physics World: Making better solar cells with polychiral carbon nanotubes

Read more…

Ain't No Change!

There was a musical group named 'New Birth" back in the long ago times of the 70's.    They had a nice run of hits.  I mean, you probably don't hear them on the monopoly radio stations of today, that much. They didn't market as well, like say, Motown's Temptations.  They looked, I don't Know, dangerous!  War looked dangerous, but their audience included a lot of melanin challenged people aiming to be cool. Sly & And The Family Stone had a varied base.  But New Birth? Despite some good songs never attained "legendary" status. Which is a shame, because one tune of theirs, "Ain't No Change!" is dead on the money!  'People Talk About Revolution! People Talk About- Stick It to The Man!"  There is a two term President who happens to be Black. The Attorney General is Black! But young Black men and women are still being murdered by badge wearing thugs. Or "scared" civilians frightened by that hoodie Only them Others be wearing that!   Yep have finally obtained the highest office (visible) in the land, but the culture of the 'Us vs Them' hasn't changed!  All that was in the Past, why you be stirring up things, just get on with your life.   Which is another way of saying "Sssh! Be quiet! Just be patient! And think of Hebbin! " Ain't no Change! 

Read more…

Ferguson and Barney Fife...

Enough said: source, Facebook

Michael Brown should have finished his first week in college. I am not elevating him to apotheosis, just stating a fact. He was likely going to a community college, perhaps learning a skill as a technician. Or, he may have had higher aspirations and shoring up his study skills and academics in a less challenging setting. The problem is, we'll never know the answer.



Instead, he was gunned down, left in the streets for approximately four hours for apparently the lethal crime of jaywalking. Yes, Chief Barney Fife - over a municipality of approximately 21,000 citizens - released a video no less than the Department Of Justice advised he not release, publicly trying a dead teenager that can't object; alluding his video taped guilt of shop lifting cigars from an convenience store was the motive for stopping him (the incidents were separate events). Then, disavowed all knowledge of the story in his second televised interview (then suggesting his officer might have known after all), leaving shocked reporters figuratively with their mouths wide open at the level of their feet. Michael’s democratic governor was feckless and useless during public rebuke Saturday. Senators Claire McCaskill and Elizabeth Warren (D); Ted Cruz and Rand Paul (R) all decried the excessive force of the Missouri Police Department. The irony is this impressive display of militarism wasn't used at the Cliven Bundy Ranch where militia pointed weapons at Bureau of Land Management agents – a federal offense that ended in no dead bodies, an avoided standoff and the tax-evading $1.2 million dollar moocher still on his ranch.



Since the election of the country’s first African American president, we've seen the ugly side of this country that can be illustrated in this faux-related pattern recognition (attributed to Dr. Frances Cress Welsing, “The Isis Papers”):



AMERICA

A-M-E-R-I-C-A…

I-A-M-E-R-C-A…

I-A-M-R-E-C-A

I-A-M-R-A-C-E



“I AM RACE.”



The first African American president (representing a 2.3% probability of "other-than-white-male" since Washington to W) and attorney general are essentially being sued and presumably impeached – individually and/or respectively - for the crime of “president while black”; “attorney general while black” a clear escalation of the “uppity” charge in southern parlance:



Uppity: Taking liberties or assuming airs beyond one's place in a social hierarchy. Assuming equality with someone higher up the social ladder - Urban Dictionary

Michael Brown did the “right things,” though obviously no angel - what teenager is? He “pulled himself up by his own boot straps” which is the usual escape for “we’re NOT going to help you get to whatever your dreams are.” Now he’s the inspiration for the mantra “hands up; don’t shoot!” It is a hash tag; it is a movement in New York, Boston, New Orleans, Howard University and Austin. The veracity of it is currently being investigated as the identity of the officer that shot Michael Brown in the incident report – a public record – has finally been released days after his death – Darren Wilson.



Suddenly, jaywalking can result in lethal force applied to the walker. A video is produced supposedly showing Michael taking cigars from a convenience store. If that is a requisite for deadly force, then the four teenagers that kleptomaniac-ed sneakers as I was being frisked decades ago by the now defunct King's Department Store "defective detective" (inept of logical reasoning, devoid of courtesy and simple police procedure) all should have been shot on sight. The KKK is raising money for the officer that shot Mike Brown as they did for George Zimmerman. And like the case of Eric Garner (“I can’t breathe”) this goes before a Grand Jury, the majority-at-this-point-MAJORITY Grand Jury.

I am angry as an African American male...I am angry as the father of African American males that have never committed a misdemeanor or felony, working in education and engineering respectively to UPLIFT society. I am angry at a society that has made us targets for a rage that is disgusting. I am angry that the six shots - 2 in the head - to subdue Michael Brown for jaywalking were six more than the zero it took to bring Jeffrey Dahmer, James Holmes and Jared Lee Loughner into custody - all mass murderers and the first named a cannibal! They walked into a police office - they were not rolled into a morgue!



Carl Sagan once asked - regarding the environment and somewhat rhetorically: “what are conservatives conserving?



Answer: the status quo that reactionary minds usually defend. Note this description of the book by author Cory Robin, “The Reactionary Mind” (2011):



Late in life, William F. Buckley made a confession to Corey Robin. Capitalism is "boring," said the founding father of the American right. "Devoting your life to it," as conservatives do, "is horrifying if only because it's so repetitious. It's like sex." With this unlikely conversation began Robin's decade-long foray into the conservative mind. What is conservatism, and what's truly at stake for its proponents? If capitalism bores them, what excites them?

Tracing conservatism back to its roots in the reaction against the French Revolution, Robin argues that the right is fundamentally inspired by a hostility to emancipating the lower orders. Some conservatives endorse the free market, others oppose it. Some criticize the state, others celebrate it. Underlying these differences is the impulse to defend power and privilege against movements demanding freedom and equality.



Uppity…Jaywalking…Let’s see the birth certificate!” Then, when they actual see it in long form, not believing it…I want my country back!”…Uppity.



For the liberal/logical, science-based mind, the election of the first black president in the history of the republic was the “Moses moment”; the culmination of King’s “I Have a Dream” exploited by both liberal and conservative politicians and theologians. On the 2008 election, the recently departed Dr. Maya Angelou reflected: “America has finally grown up!” The only time I will ever disagree with the great lady: 150 years later, we're still fighting the Civil War, as if the outcome is still under contention.



For the conservative, reactionary mind, Barack Obama is “the other,” the usurper: Antichrist in some extreme conspiracies. He's faced continual, relentless opposition that has never been seen for any president and never will after his well-deserved retirement. His youth has been sapped by real and contrived crises; internal and external. He looks 80. He didn't need a Supreme Court to decide the count in the same state as his Governor Brother, but he was illegitimate from the aspect that he’d “left his place”; he got the nuclear codes and didn't start Armageddon; he had the audacity to order the kill shots for Somali pirates, Qaddafi and “The Boogie Man” Osama Bin Laden. Couple that with doubling the Dow Jones since the "Great Recession" of 2008; 40+ months of positive job growth, an unemployment rate of 6.2% and you as opposition have a distinct problem with "message." The reactionary opposition is an anti-government movement (that somehow got elected) with the laughable acumen in civics lower than second graders, and a congress with the low confidence score of 14% only means their schemes for “limited government” is about 86% - a successful score once your perspective is flipped.



The threats started in 2007 when he was Senator from Illinois…CANDIDATE, as also Herman Cain experienced in 2012. His first audacity was to win (2008), and then win again (2012) after the opposition meant his defeat even at sacrifice of the democratic republic. The acceleration of age is in the grey in his hair; the lines in his face. He has to balance the complete anarchy of Iraq spiraling out of control after executing the “Status of Forces Agreement” negotiated by his predecessor. He’s being sued in a carnival circus for not implementing the Affordable Care Act – based on a 1989 position paper by the conservative Heritage Foundation – FAST enough, the same act they voted to DE-fund 52 times and suggest impeachment for: following all that?



“I AM RACE.”



No less than the UN is publishing a study at the end of August on our compliance with the elimination of all forms of racism - I'm guessing our "grade" will be below a C-. The ugly underbelly of American bigotry/hierarchy is being exposed to the world via Facebook, Instagram, Twitter, all new mediums as transformative to political engagement as television was to world opinion on the brutality visited upon marchers in the Civil Rights Movement; the opposition to the Vietnam War generated at home. The militarization of policing in communities of color by Barney Fife with MRAPs, tear gas, and sub-machine guns with rubber bullets originated in '72; accelerated in '94, and especially after 9-11 with the "global war on terror," like the "war on drugs" designed as never-ending. In this regard, Barney doesn't shoot the floor inches from his toes and an eye-rolling, groaning Andy Griffith takes his one bullet - his substantial armory is for the battlefield. Otis – the Mayberry town drunk – still staggers in on Friday nights to let himself in his cell; he has nothing, NOTHING to worry about from MRAPs, machine guns, rubber bullets or tear gas…he’s not "the threat" Barney’s likely to react violently to. I don't know how long the global economy will tolerate this until the Dollar is replaced by the Yuan and Euro, and for our reaching back to an "Ozzie and Harriet" utopia that never existed - seals our irrelevance in the pages of history.



The wretchedness of racism is as evident in 2014 as was in 1914 or 1864. Renisha McBride, Michael Brown, Jonathan Ferrell, Trayvon Martin, Jordan Davis are the president and attorney general in effigy; they are accessible targets of Barney's et al delusional psychopathic hatred...they will eventually find other targets not based on melanin.

"We The People" all are.
Commander William Adama - Battlestar Galactica (Sci-Fi series)


First they came for the Socialists, and I did not speak out—
Because I was not a Socialist.

Then they came for the Trade Unionists, and I did not speak out—
Because I was not a Trade Unionist.

Then they came for the Jews, and I did not speak out—
Because I was not a Jew.

Then they came for me—and there was no one left to speak for me.



Martin Niemöller, US Holocaust Memorial Museum

Added:

Democracy Now!: Ferguson Protests Erupt Near Grave of Ex-Slave Dred Scott, Whose Case Helped Fuel U.S. Civil War

PBS: Dred Scott case: the Supreme Court decision

Read more…

      

         Sword and Sorcery is one of my favorite genres
         to illustration... of course, I could not resist doing
         my own hero. Meet Kotas, The Dragon. 
         He is a shape shifting King of a race of dragons.
         Lord Kotas is also an astute master in the mystic arts. 
         Influenced by Michael Moorcock's eternal
         champion series... This hero is my homage to that author.
              But I like my heroes to be triumphant
   and not so tragic like Elric, regardless this character is  featured
   in one my anthology books entitled... Immortal Fantasy.
         Above is the link to cover of Immortal Fantasy... 
        Hey, Kotas, even gets the cover in this premiere issue.
          Below is one of the several images 
          of the Dragon King in
           Aura - The art of Winston Blakely.
          All of this and more coming in October.
            
  
Read more…

native hoop science

I was crack'n on grandma, cause she had amongst her things some Indian trinkets. “She was always collecting stuff that caught her eye” I said. It was a small hoop with string like a spider's web and feathers, and coral and turquoise and fake bear claw jewelery. Hey, I didn't care, as far as I knew I was from Africa a thousand miles away and who ever heard of a black Indian anyway, I know I wasn't a Redman related to Eskimos or Mexicans.

I bought Grandma's house from my uncle, lived there many years. Small animals would come in and rain and cold. I was always patching up something. One night I awoke, there was a rustling in the box of grandma's old things. Animal, I thought. I disturbed the box, knocked the lid off. The dream catcher was ablaze, but no smoke, no smell. I grabbed it to throw it out the open window, it enlarged in my hand, became two rings, one in each hand. I looked up and standing there as big as a bear was an intruder. He drew a pistol, fired, I instinctively moved the ring in front of me. The bullet entered the ring in front of me and passed out the ring I held in my other hand, I was unharmed. He was startled, but determined to hurt me and continue his robbery. He lunged to over power me, again the hoop. He entered the front hoop, so quickly I placed the second hoop against the wall and the intruder was expelled through the wall into the yard. The look on his face as he ran into the car in the driveway and the mailbox and the ditch along the street. I didn't know what to think, must have been dreaming I thought. In my hand the small dream catcher. I said out loud, “Grandma! You didn't!?” chuckled to myself while I put the trinket back in the box.

Read more…

Iie Seppuku...



I had a wonderful birthday. I visited the American Museum of Natural History, the Hayden Planetarium and Central Park. I got many well-wishes on Facebook and other social media. This seemed a strange post so soon after one's 52nd birthday, but...

I lost a friend of my college youth in Winston-Salem: she was to have turned 50 in one week from August 14. A heart attack, so young...an adult male child and 12 year-old-daughter left behind.

We all lost Robin Williams and Lauren Bacall...an ironic, coincidence of "threes," until Wednesday, Trekkie's everywhere lost Arlene Martel -  T'Pring. I would be remiss not to mention the heartbreaking tragedy of Michael Brown in Missouri (I will speak more on that tomorrow). Robin sadly, chose to end his life abruptly, as another part of memories of my youth slips away.

As I thrilled at the action in "The Last Samurai," seppuku loomed large in one of the first scenes. Before the subject could experience pain (and thus show "dishonor" in facing death), his second-in-command (Kaishakunin). would "dispatch" him quickly - you can see how at the link. I sat in the theater, and wondered if the warrior class had masked what we'd now know as anxiety; depression; post-traumatic stress disorder and made it "noble," masking our fears of failure. Even in the armed services, we talk about the "noble sacrifice," sending soldiers, sailors and airmen to meat grinders without thought of treating them for the aftermath (if they survive) and reintegrating them into a populace hopefully less violent than the battlefield, though that sadly is slipping away from civil society.

I am reminded also of a dark time when my thoughts were invaded by depression, and what Robin Williams accomplished, I briefly contemplated. It was not cowardice, as some inane television pundits quipped like verbal Tourettes (at least with social media pressure, he apologized), but an almost calculated - albeit twisted - "logic" at the end of despair; made "noble," similar to the Samurai, even though the people that would survive your deed would be burdened with "why?" with no clear answers or ritual dogma to comfort them. In dark tunnels, you must continually reach for the light no matter how dim or (its candle perceived) far away, and cry out your pain - silence is a foreboding familiar that will crowd away all else but echos...echos...echos, that only get louder and eventually crowd out all else.

I am 52, not 25. Though I'd love to have my old body with its speed, its strength, its stamina and endurance the only thing I can pass on that I hope is of benefit is the wisdom to talk; to share with others how you're feeling, or in my case how I felt to my family. It's a mental/emotional check on my current condition and a guard against slipping into it again.

Like many engineers during the early 2000's, the industry downturn affected me deeply. I suddenly found myself without a definition. I tried many things; failed at many things until I found myself in the mirror I tended not to look deeply at: I, nerd...still had value and a contribution to give.

Now, with more years behind me than ahead of me, I face eventual oblivion working towards being the best ME I can be; doing what I am in this instance to do before I expire. Someone stated to me what's said at your wake and funeral is the narrative you've written on the papyrus of your life.

Robin Williams, Lauren Bacall, Arlene Martel, Michael Brown and Crystal Phelps have written quite beautiful poems of their existence. I hope to pen as well when my time eventually comes.

Until then, I'll try to stay as mentally and physically healthy as I possibly can and enjoy this life and opportunities given me.

I hope my words help others avoid their own dark place; their own seppuku considerations (Iie Seppuku - "no")...seek counsel; hug your loved ones passionately. They deserve your life lived with them to its fullest.

1-800-273-8255

Peace.
Read more…

Sidestepping Uncertainty...

This apparatus at the University of Rochester uses "compressive sensing" techniques to take minimal measurements of laser light's position, thus preserving the abilty to measure its momentum, too.
Gregory A. Howland

A novel way of measuring a photon’s location allows physicists to measure its momentum, too — a feat once thought impossible.



Quantum mechanics imposes a limit on what we can know about subatomic particles. If physicists measure a particle’s position, they cannot also measure its momentum, so the theory goes. But a new experiment has managed to circumvent this rule—the so-called uncertainty principle—by ascertaining just a little bit about a particle’s position, thus retaining the ability to measure its momentum, too.



The uncertainty principle, formulated by Werner Heisenberg in 1927, is a consequence of the fuzziness of the universe at microscopic scales. Quantum mechanics revealed that particles are not just tiny marbles that act like ordinary objects we can see and touch. Instead of being in a particular place at a particular time, particles actually exist in a haze of probability. Their chances of being in any given state are described by an equation called the quantum wavefunction. Any measurement of a particle “collapses” its wavefunction, in effect forcing it to choose a value for the measured characteristic and eliminating the possibility of knowing anything about its related properties.

A very GOOD video explanation of Quantum Mechanics at the link, an episode of "Instant Egghead." I promise your hat will still fit after viewing it.



Scientific American:
Particle Measurement Sidesteps the Uncertainty Principle, Clara Moskowitz

Read more…

Seeds and Carbon Nanotubes...

This illustration shows how a seed molecule on a platinum surface (left) will accumulated carbon atoms by growing upwards to create a single-walled carbon nanotube with a specific structure. (Courtesy: Juan Ramon Sanchez-Valencia)

The first effective technique for growing a batch of single-walled carbon nanotubes (SWCNTs) that all have the same molecular structure has been developed by scientists in Switzerland. The new process involves using "seed molecules" on a platinum substrate to grow SWCNTs with the desired structure. The breakthrough could be extremely important to those developing electronic devices based on SWCNTs because nanotubes with different structures can have very different electronic properties.



An SWCNT can be thought of as an atomically thin sheet of carbon that has been rolled up to form a tube about 1 nm thick, resembling a drinking straw. The carbon sheet always has the same honeycomb structure, which it shares with graphene. However, there are about a hundred different ways that the edges of the sheet can join together to make a tube, and this defines whether an SWCNT conducts electricity like a metal or a semiconductor. In the case of semiconducting nanotubes, the size of the electronic band gap also depends on how the edges are joined.



Electronic devices based on SWCNTs could, in principle, be used to create transistors and other components that are smaller, faster and more energy efficient than those based on silicon. But before that can happen, scientists have to come up with reliable ways of producing batches of SWCNTs with identical structures.



Physics World: Molecular seeds sprout identical carbon nanotubes

Read more…

Terahertz Pumping...

Source: Technology Review

TECHNOLOGY REVIEW: One of the more significant practical challenges currently occupying molecular biologists is to find better ways of identifying short strands of DNA. Called oligonucleotides, these strands of nucleotides are hugely useful in processes such as genetic testing, forensics and DNA amplification.



But identifying the strands is a somewhat laboured business. Almost every detection method relies on fluorescent dyes and markers that can be picked up by optical sensors providing a useful but indirect indication of the molecules that are present.



But molecular biologists would like a better system that measures the characteristics of the molecules involved and so provides direct evidence of the sequence of nucleotides. Indeed, various research teams are working on such systems, some with significant success.



Today, Andrey Chernev at St Petersburg Academic University in Russia and a few pals say they have invented an entirely new way of identifying oligonucleotides using terahertz radiation. “Our results demonstrate a new method for label-free, real-time oligonucleotide characterisation,” they say.



An oligonucleotide is a short single-stranded DNA or RNA molecule usually consisting of fewer than a hundred or so bases. The sequence of these bases determines the type of oligonucleotide. So the ideal detection mechanism would reveal this sequence.

Abstract

Our results demonstrate a new method for label-free, real-time oligonucleotide characterisation by their self-resonant modes, which are unique to their conformation and sequence. We anticipate that our assay will be used as a starting point for a more detailed investigation of the aforementioned mechanism, which can be used as a basis for oligonucleotide detection and analysis. Furthermore, this technique can be applied to improve existing modern genetics technologies.



Physics arXiv: DNA Detection By THz Pumping
Andrey L. Chernev, Nicolay T. Bagraev, Leonid E. Klyachkin, Anton K. Emelyanov, Michael V. Dubina

Read more…

Seeking Vision...

Dr. Z - MySciNet

I had the pleasure of meeting Dr. Z at the joint NSBP/NSHP conference in Austin, Texas. Also met Dr. Hakeem Oluseyi, who you see Saturdays on "Outrageous Acts of Science."



From MySciNet: Aziza Baccouche—Dr. Z, as she calls herself—has made a career connecting scientific research to the people it could affect, such as informing patients about medical developments and getting more minority students interested in science. Her medium is the screen, and she tells the stories of science through documentaries. But Baccouche, a Ph.D. physicist-turned-filmmaker, will likely never clearly see any of her finished products: She became legally blind at the age of 8, and ever since she's relied on her wits, passion for science, excellent memory, and what she calls her vision to achieve success.



"We know power is work over time, that strength is endurance over time. So I endured a lot of obstacles, but at the same time I created strength and vision and wisdom and endurance."



You may/may not get the following "warning":


As the meme says, "remain calm" and open her Ted Talk in You Tube. I assure you it's inspiring and worth it.

Tomorrow: Chaos Theory

Read more…

Chaos Theory...

Perhaps we should re-evaluate who was really "stupid"; the birds or the people who allowed the complete extinction of the birds to take place. Word Info

By Simon Powers, University of Lausanne

For hundreds of thousands of years humans lived in hunter-gatherer societies, eating wild plants and animals. Inequality in these groups is thought to have been very low, with evidence suggesting food and other resources were shared equally between all individuals. In fact, in the hunter-gatherer societies that still exist today we see that all individuals have a say in group decision making. Although some individuals may act as leaders in the sense of guiding discussions, they cannot force others to follow them.



But it seems that with the beginning of agriculture around 10,000 years ago, this changed. An elite class began to monopolise resources and were able to command the labour of others to do things, such as build monuments in their honour. So how was it that egalitarian societies, where all men were equal, transitioned into hierarchical societies where despots reigned? See: Raw Story

Once upon a time: hunter-gatherers in small bands had no leaders. We all ate a paleo-diet because that's all that there was - fast food chains hadn't been invented yet. We lived short lives, our vocabularies were limited, but we were ripped to shreds for our brief time in the sun. It was like a John Lennon song.



Then, along with agriculture, cities, finance, commerce, bread and reading, we birthed assholes. The bread made us fat and sedimentary, and since the saber tooth tigers died out - well before the Dodos - we had no natural predators that flexed our muscles or our minds. Couple that with remote controls, home computers, the Internet and flat screens with propaganda-as-news and [non] reality-TV and we were really screwed. The anus-class justified their existence by entrepreneurial genius; "divine right" ('cause, no one can argue with that), and suppression of anyone's rights other than their own. Most of them - like modern psychopaths - rose to prominence in positions of high authority, because they "sounded" like they knew what they were talking about even if they didn't. Keeping us divided through racism, sexism, xenophobia, etc. were and are tactics similar to the cynical observations of LBJ.

Nowadays, the royal anuses finance obfuscation on climate change (as their class previously did on the dangers of leaded gasoline and smoking); bribe politicians obviously addicted to crack cocaine, and buying elections. Speaking of lead, solving it may have remedied a myriad host of issues had the lying not taken place. But again, they excel at convincing everyone they have the answer to everything in simple soundbite philosophies spouted by their uneducated parrots in owned media to their under-educated minions, making John Steinbeck more prophet than author. A salient, poignant sign at the start of the Occupy Wall Street movement stated: "Satan runs Wall Street! One day, the poor will have nothing left to eat BUT the rich!" Never an advocate of cannibalism, but I observe in this case, they will at least be recycled into a usable compost contributing to new hunter-gatherer crops.

Despite Malcolm X's farm metaphor, it is the Dodos that have come home to roost. The birds were slaughtered for meat by the stupid humans that allowed them to perish. We obviously can't solve the problems in the Near East nor problems at our own borders, healthcare or funding the government at home, the Venn diagram intersection being their genesis from US policies that can be summed as "kicking the can down the road" and "whistling in the wind" without the calculation of blow back. Now, "eating our own" - usually, a political metaphor - is applied to the human species, and WHO will pen the image of our remains (at, if it comes to that, our demise)?
Read more…

Foreword Reviews: Another marketing tool

Independent (aka small-press) publishers and author-publishers tend to do a lot of marketing with as little $$ as possible. Sites like BSFS provide members with the opportunity to promote their work on this site. So, is there a marketing tool that all of the above could benefit from with minimal $$ outlay?

You betcha.

Foreword Reviews reviews books published by "indie" publishers (there seems to be some disagreement on exactly what "indie" means; for my purposes here, it means any means of publication <b>not</b> including any "major " print publishing house and/or "traditional" publisher regardless of publishing mode [includes ebooks]). The print magazine began publishing 15 years ago with librarians and independent booksellers as their target readership. They've since expanded into a strong online presence, and recently have expanded their target audience to include the general public. The print mag's design was recently renovated, and the website was redesigned within the last two months. 

Does your publisher know about Foreword Reviews? This would be a good time to ask. This would also be a good time to check out the FWR site for yourself. 

"Why do you go on so about this magazine/website?" you might ask. 

I do so because: FWR is a great resource for readers, writers and publishers; getting libraries to purchase one's book can mean better income for writers (depending on contract clauses) as (afaik) library editions cost more since they're made to take repeated use; and for a very selfish reason. I'm a freelance reviewer (fiction and non) for FWR, it's a good-paying gig, and I've had the opportunity to read some excellent books in doing so. Email me for the link to my FWR reviews if you're interested.

I just wanna read more great books, tbh. :-)

Read more…

Emerging From Plato's Cave...

Source: Link below

In his Allegory of the Cave, the Greek philosopher Plato described prisoners who have spent their entire lives chained to the wall of a dark cavern. Behind the prisoners lies a flame, and between the flame and prisoners parade objects that cast shadows onto a wall in the prisoners' field of view. These two-dimensional shadows are the only things that the prisoners have ever seen—their only reality. Their shackles have prevented them from perceiving the true world, a realm with one additional dimension to the world that they know, a dimension rich with complexity and—unbeknownst to the prisoners—capable of explaining all that they see. [1]



It could be time to bid the Big Bang bye-bye. Cosmologists have speculated that the Universe formed from the debris ejected when a four-dimensional star collapsed into a black hole — a scenario that would help to explain why the cosmos seems to be so uniform in all directions.



The standard Big Bang model tells us that the Universe exploded out of an infinitely dense point, or singularity. But nobody knows what would have triggered this outburst: the known laws of physics cannot tell us what happened at that moment.



In our Universe, a black hole is bounded by a spherical surface called an event horizon. Whereas in ordinary three-dimensional space it takes a two-dimensional object (a surface) to create a boundary inside a black hole, in the bulk universe the event horizon of a 4D black hole would be a 3D object — a shape called a hypersphere. When Afshordi’s team modelled the death of a 4D star, they found that the ejected material would form a 3D brane surrounding that 3D event horizon, and slowly expand.



The authors postulate that the 3D Universe we live in might be just such a brane — and that we detect the brane’s growth as cosmic expansion. “Astronomers measured that expansion and extrapolated back that the Universe must have begun with a Big Bang — but that is just a mirage,” says Afshordi. [2]



1. Scientific American: The Black Hole That Birthed the Big Bang
2. Nature: Did a hyper-black hole spawn the Universe?

Read more…