Archives 2005 - 2019

Kina slutar stödja Mugabe

published Sep 02, 2007 11:00   by admin ( last modified Sep 02, 2007 11:00 )
Robert Mugabe is to lose vital support from one of his few remaining allies on the world stage, China. One of the Zimbabwe president's oldest diplomatic friends, China yesterday told Lord Malloch Brown, the Foreign Office minister, that it was dropping all assistance except humanitarian aid.


Läs mer: China is to withdraw backing for Mugabe - Telegraph

Länk - FN struntar i Myanmar

published Sep 02, 2007 08:35   by admin ( last modified Sep 02, 2007 08:35 )
Their resoluteness should not be surprising. And there is nothing novel about the regime's response. But the resounding silence of the United Nations is hard to fathom. Secretary General Ban Ki Moon and his special envoy for Myanmar, Ibrahim Gambari, have had two months to reflect on a June warning about Burma sounded by the International Committee of the Red Cross. Not since it denounced the Rwanda genocide of 1994 has the Red Cross issued such a public condemnation of a government's behavior. Myanmar's autocratic military rulers have destroyed more villages in areas inhabited by ethnic minorities than have been razed in Darfur. Its partnership in the narcotics trade has helped spread addiction and HIV/AIDS infection to neighbors.


Läs mer: The UN's silence on Myanmar - International Herald Tribune

Länk - Mashups - lekmannen integrerar IT på egen hand

published Sep 02, 2007 08:32   by admin ( last modified Sep 02, 2007 08:32 )
Devising that sort of mash-up, which handles multiple data sources to produce a customized solution, is typically the province of a professional. But the new systems are designed, their creators say, so people with modest technical skills can tailor applications to their needs — while writing little or no code.


Läs mer: Do the Mash (Even if You Don’t Know All the Steps) - New York Times

Länk - Passiv rökning dödar katter

published Sep 02, 2007 08:32   by admin ( last modified Sep 02, 2007 08:32 )
...också!

“One reason cats are so susceptible to secondhand smoke is because of their grooming habits. Cats constantly lick themselves while grooming, therefore they lick up the cancer-causing carcinogens that accumulate on their fur,” MacAllister said. “This grooming behavior exposes the mucous membrane of their mouth to the cancer-causing carcinogens.” Malignant lymphoma is another type of cancer that cats that live with smokers have a higher risk of getting. This cancer occurs in the lymph nodes and cats are twice as likely to have this type of cancer compared to cats living in a non-smoking home. This form of cancer is fatal to three out of four cats within 12 months of developing the cancer.


Läs mer: Bark, bark, cough: Secondhand smoke a threat to pets | Science Blog

Länk - Hur man ställer frågor påverkar svaret

published Sep 02, 2007 08:13   by admin ( last modified Sep 02, 2007 08:13 )
In a different study (Strack & Mussweiler; pdf) asked one set of participants "Did Gandhi live to the age of 140?" The participants presumably all responded, "No." The second question was to estimate how long Gandhi lived. The average estimate was 67. The second group of participants was first asked "Did Gandhi live past the age of 9." Again, presumably everybody replied correctly. On the second question, they estimated on average that Gandhi lived to 50. There are many other examples. This is why experts will tell you that polls are next to meaningless unless you know the exact wording of the question. It's not subliminal mind control like in the movies, but manipulating people's decisions (or, at least their answers to surveys) is fairly easy.


Läs mer: Subliminal messaging | Science Blog

Länk - Wikileaks - global meddelarfrihet

published Sep 01, 2007 11:46   by admin ( last modified Sep 01, 2007 11:46 )
Wikileaks is developing an uncensorable Wikipedia for untraceable mass document leaking and participatory analysis. Our primary interests are oppressive regimes in Asia, the former Soviet bloc, Sub-Saharan Africa and the Middle East, but we expect to be of assistance to peoples of all countries who wish to reveal unethical behavior in their governments and corporations.


Läs mer: Wikileaks - Wikileaks

Länk - Sjöstjärnerobot som lär sig gå - snabbt

published Sep 01, 2007 06:17   by admin ( last modified Sep 01, 2007 06:17 )



Towards the end of the video, the robot conceptualizes itself, determining its own structure using sensors built into each joint. Then, it thinks of different ways that it might move - walk - from place to place.


Läs mer: Starfish Robot Stretching Video: Science Fiction in the News

Kvantdatorers begränsningar

published Sep 01, 2007 03:07   by admin ( last modified Sep 01, 2007 03:07 )
Intuitively, even though a quantum computer in some sense involves exponentially many paths or “parallel universes,” the single universe that happened on the answer can’t shout above all the other universes: “hey, over here!” It can only gradually make the others aware of its presence.


Läs mer: Shtetl-Optimized » Blog Archive » What Google Won’t Find

Hela parasitens DNA fanns inkopierad i värdens DNA

published Aug 31, 2007 12:44   by admin ( last modified Aug 31, 2007 12:44 )
...åtminstone allt man testat för. Man upptäckte det på ett ganska kul sätt. För att undvika att få kontaminering av parasiten Wolbachias DNA när man skulle ta fram DNA:t ur en fruktfluga, så dödade man parasitinfektionen med antibiotika. Men trots detta fanns Wolbachia-DNA:t kvar. Detta kan innebära att gener sprider sig på de mest märkliga sätt mellan livsformer...

"For several months, I thought I was just failing," says Clark. "I kept administering antibiotics, but every single Wolbachia gene I tested for was still there. I started thinking maybe the strain had grown antibiotic resistance. After months of this I finally went back and looked at the tissue again, and there was no Wolbachia there at all." Clark had cured the fly of the parasite, but a copy of the parasite's genome was still present in the fly's genome. Clark was able to see that Wolbachia genes were present on the second chromosome of the insect.


Läs mer: ScienceDaily: One Species' Entire Genome Discovered Inside Another's

Survival of the sickest

published Aug 31, 2007 12:19   by admin ( last modified Aug 31, 2007 12:19 )
Hittade en Slashdotkommentar om en bok som heter "Survival of the sickest" (ISBN 9780061177644). Den verkar intressant. Den tar upp det faktum att olika sjukdomar är olika farliga för oss beroende på hur den "tänker" sig att spridas vidare. Om man ska bli stucken av mygg, som malaria, ser den till att man blir orörlig och lätt att hitta för mygg. Om den ska sprida sig genom kontakt med många människor så blir den mild. Ur Slashdotkommentaren:

The book even went over some guidelines for predicting how lethal a disease would be, based on its mode of transmission: typically, we've thought that diseases get less lethal over time because that increases their ability to spread, but the book says it depends on the transmission path. Malaria wants -- inasmuch as a disease can want anything -- people to be very ill indeed, so that they spend lots of time not moving, giving mosquitoes a better chance of finding the people, while colds do want people to be as mildly sick as possible so they can maximize their distribution.

 A particularly neat case is cholera, which can be spread by human-human contact, or more usually by contamination of drinking water. In the latter case, the sicker the person, the better, because more bacteria will be voided by the person through diarrhea, while in the former case, milder infections spread more because there's longer-term contact with heath care personnel, meaning more chances to spread.

Watching cholera epidemics in South America, that's exactly what they observed: in countries that were poor, where there wasn't really any official health care, the disease became progressively more lethal over time, while in countries where infected people got immediate health care, the disease got less lethal over time.
(Styckeindelning av mig)

Läs mer: One Species' Genome Discovered Inside Another's

Mögligt hus och depression kan vara korrelerade

published Aug 31, 2007 07:36   by admin ( last modified Aug 31, 2007 07:36 )
Det är bara en slags preliminära data, då man inte mätt upp halter i husen. Men jag har ju tidigare bloggat om Peptider som strular med hjärnan och om Toxoplasma Gondi. Jag tror mycket kommer att länkas till aktivitet av virus och mikroorganismer. I detta fall tror man att det kan vara ett neurotoxin.

Not all the experts agree that there is any connection between mold and depression—despite this new research. Critics wish the study hadn’t relied on self reports. “Having professionals do the inspection and rate homes for dampness or moldiness is much better than having people self report,” says Pat Breysse, director of the division of environmental health engineering at the Johns Hopkins School of Public Health.


Läs mer: Study: A Moldy Home May Make You Sad - Newsweek Health - MSNBC.com

Länk - Stamceller lagar hjärta efter hjärtattack

published Aug 30, 2007 12:59   by admin ( last modified Aug 30, 2007 12:59 )
..på möss såklart, men med mänskliga stamceller:


When human heart muscle cells derived from embryonic stem cells are implanted into a rat after a heart attack, they can help rebuild the animal's heart muscle and improve function of the organ, scientists report in the September issue of Nature Biotechnology. The researchers also developed a new process that greatly improves how stem cells are turned into heart muscle cells and then survive after being implanted in the damaged rat heart. The findings suggest that stem-cell-based treatments might one day help people suffering from heart disease, the leading cause of death in most of the world.


Läs mer: Human stem cells fix broken hearted rats | Science Blog

Länk - Rena patentföretag i IT-branschen

published Aug 29, 2007 12:05   by admin ( last modified Aug 29, 2007 12:05 )
The companies are accused of violating a patent on automatic message routing held by Polaris IP. The patent has a long history in litigation, but all the cases have been settled out of court.


Läs mer: Amazon, Google, Yahoo, And Others Sued For Automating Their E-mail -- Patent Lawsuit

Länk - Fastighetsvärde i ett område starkt negativt korrelerat med fetma

published Aug 29, 2007 11:49   by admin ( last modified Aug 29, 2007 11:49 )
Neighborhood property values predict local obesity rates better than education or incomes, according to a study from the University of Washington being published online this week by the journal Social Science and Medicine. For each additional $100,000 in the median price of homes, UW researchers found, obesity rates in a given ZIP code dropped by 2 percent.


Läs mer: ZIP codes, property values predict obesity rates | Science Blog

Fem vetenskapsmän som skapade den moderna världen

published Aug 28, 2007 01:08   by admin ( last modified Aug 28, 2007 01:08 )
Det blir lätt en övervikt av fysiker när de främsta vetenskapsmännen ska koras. John Hawks har försökt sig på att göra en egen lista med intressanta namn. Han nämner:

1. R. A. Fisher - Genetik. Skapade också statistiska metoder som används idag för t ex läkemedelstest.

2. Louis Pasteur - pastörisering, vaccin och upptäckte metoder för att se kiralitet (spegelvända molekyler), vilket banande väg för att upptäcka DNA senare. Gjorde teori om att det finns mikroorganismer.

3. Leo Szilárd - Satte igång Manhattan-projektet. Gjorde den matematiska kopplingen mellan entropi och information

4. John von Neumann - skapade modeller för spelteori och en massa andra saker



So I decided to do something a little different: What five scientists have had the greatest impact on human life? Yes, Newton was great, but gravity goes on without him.
Den femte skall man själv nämna på hans blogg.

Läs mer: John Hawks Anthropology Weblog : 2007 08

Är kranvatten så jädra bra då?

published Aug 27, 2007 11:53   by admin ( last modified Aug 27, 2007 11:53 )
Det senaste holier than thou-greppet i miljödebatten är att kritisera vatten på flaska. Men det finns kanske trots allt en anledning att människor väljer att dricka vatten på flaska. Jag skulle vilja ha svar på följande fråga:

  • Hur mycket av de läkemedelsrester som pinkas ut har letat sig in i kranvattnet? Detta gäller tex estrogenliknade medel (se lista sist i denna bloggpost).

Jag har tidigare bloggat om:  Vad händer med mediciner i avloppen?

Åtminstone en person jag känner, en som inte direkt är så känslig av sig, avstår från kranvatten då kloret irriterar magen.

Det är helt OK att de som vill rädda världen från vattentransporter kör någon slags upplysningskampanj, med egna pengar, för att försöka minska användningen av buteljerat vatten.

Det är inte OK att förbjuda buteljerat vatten. Kostnaden ska tas ut på energipriset, som vanligt.

Det är ju synd om de som är känsliga för klor i magen. Men det är väl mer synd om de som det vänder sig i magen på bara de ser andra bära på vatten:



– Det vänder sig i magen när jag ser folk bära hem flaskvatten från affären, säger Anders Nordström, universitetslektor i naturgeografi vid Stockholms universitet.
Läs mer: Svenskt kranvatten tippas som nästa heta miljötrend

Den känsligheten är svårare att bota.

Och efter en snabb Google-sökning dyker detta upp:

Birth control pills, estrogen replacement drugs, ibuprofen, bug spray, sunscreen, mouthwash and antibacterial soap: all of these products could turn up in your next glass of tap water, according to the United States Geological Survey (USGS). Last summer, USGS scientists sampled 139 rivers and streams, finding hundreds of prescription and over-the-counter drugs and personal care products lingering in the nation’s water supply.


Läs mer: Drugging Our Water : We Flush It, Then We Drink It (by Melissa Knopper)

Och även boskapen bidrar:

Farm animals also are a source of pharmaceuticals entering the environment, through their ingestion of hormones, antibiotics and veterinary medicines. (About 40 percent of U.S.-produced antibiotics are fed to livestock as growth enhancers.) Manure containing traces of such pharmaceuticals is spread on land and can then wash off into surface water and even percolate into groundwater. Along with pharmaceuticals, personal care products also are showing up in water.


Läs mer: Pharmaceuticals In Our Water Supplies

Dessa substanser kommer väl också att förr eller senare leta sig ner i mineralvattnen, men det kommer att några år eller decennier (beorende på mineralvattnets geologiska filter).

Vaccin mot Alzheimers

published Aug 26, 2007 06:54   by admin ( last modified Aug 26, 2007 06:54 )
Alzheimers är nog en av de sjukdomar där man kan tänka sig att chansa lite i behandling. Och nu har man hittat ett vaccin som i alla fall verkar fungera på möss.

Come on, give it a shot!

The antibodies raised by the vaccine must reach the brain by traversing the organ’s protective blockade, the blood brain barrier. “Normally antibodies aren’t getting into the brain in any large quantities,” said Dr. Sigurdsson. “In this animal model—and also in Alzheimer’s disease—there’s a breakdown of the blood brain barrier. In addition, it is well established that neurons have receptors that can bind to and promote uptake of antibodies and our studies seem to indicate that sick neurons that are accumulating tau aggregates take up more antibodies than healthy neurons. The antibodies then end up at the site where they can interact with pathological tau protein in the neuron, and promote its clearance.”


Läs mer: Vaccine thwarts the tangles of Alzheimer's | Science Blog

Mindre än 1 mikrogram bly/liter blod leder fortfarande till 7 IQ-poäng mindre hos barn

published Aug 23, 2007 12:52   by admin ( last modified Aug 23, 2007 12:52 )
But recent medical evidence has shown that even with lead levels less than 10 mcg/dl, a child can lose roughly seven IQ points.


Läs mer: What the toy recall can't fix | FP Passport

Olyckligt uttalande

published Aug 23, 2007 12:37   by admin ( last modified Aug 23, 2007 12:37 )
Den socialdemokratiske riksdagsmannen Yilmaz Kerimo, själv med assyr-syriansk bakgrund, vill inte uttala sig om den aktuella händelsen. Men han låter förstå att de lokala partifunktionärerna gjorde fel. – Yttrandefriheten ska gälla så länge det framförda budskapet inte går emot partilinjen, säger Yilmaz Kerimo till Ekot.


Läs mer: S anklagas bryta mot yttrandefrihet - sr.se

Hittat via Ingerös blogg.

Affrèrement - samkönat partnerskap redan på medeltiden

published Aug 23, 2007 11:55   by admin ( last modified Aug 23, 2007 11:55 )
Enligt Science Blog så fanns det under fransk senmedeltid en möjlighet att leva tillsammans samkönat med delad ekonomi. Detta användes enligt Allan A. Tulchin (Shippensburg University) mest för bröder som ärvt t ex en gård och ville driva den gemensamt och leva där som när de var små. Men affrèrement användes också mellan människor som inte var släkt. Detta kan vara ett bra argument för de som kämpar mot konservativa åsikter om vilka parförhållanden som kan ha något slags lagligt skydd. Det bästa vore ju ändå om allting löstes med kontrakt, utan speciella lagar, tror jag.

The new “brothers” pledged to live together sharing ‘un pain, un vin, et une bourse’ – one bread, one wine, and one purse. As Tulchin notes, “The model for these household arrangements is that of two or more brothers who have inherited the family home on an equal basis from their parents and who will continue to live together, just as they did when they were children.” But at the same time, “the affrèrement was not only for brothers,” since many other people, including relatives and non-relatives, used it.

The effects of entering into an affrèrement were profound. As Tulchin explains: “All of their goods usually became the joint property of both parties, and each commonly became the other’s legal heir. They also frequently testified that they entered into the contract because of their affection for one another. As with all contracts, affrèrements had to be sworn before a notary and required witnesses, commonly the friends of the affrèrés.”

Tulchin argues that in cases where the affrèrés were single unrelated men, these contracts provide “considerable evidence that the affrèrés were using affrèrements to formalize same-sex loving relationships. . . . I suspect that some of these relationships were sexual, while others may not have been. It is impossible to prove either way and probably also somewhat irrelevant to understanding their way of thinking. They loved each other, and the community accepted that. What followed did not produce any documents.”




Läs mer: Are civil unions a 600-year-old tradition? | Science Blog