April 2010
4 posts
A nevetés étvágyfokozó lehet →
A nevetés hatására csökken a leptin (étvégytalanságot okoz) és növekedik a ghrelin (étvágyfokozó) koncentrációja.
Colours In Cultures →
A networking művészete avagy: Hogyan építsünk... →
"Egyre több adat gyűlik össze arról, hogy a személyes kapcsolati hálónk sokkal inkább meghatározza a sorsunkat, semmint azt hinnénk. (…)
A hálózatok viselkedést meghatározó másik példájaként az önmagukról a közösségi portálokra (iwiw-re, Facebook-ra, myvip-re, stb.) mosolygó arcképet felrakó embereknek általában sok és mosolygó arcképű ember az ismerőse, és fordítva: a savanyúképűeket...
Twitter Genes: German Scientists Contribute to... →
February 2010
2 posts
During your lifetime you have 104,390 dreams,... →
‘The photic sneeze reflex’ avagy miért is... →
January 2010
2 posts
A világ legcsalfább madarai →
Ennek az észak-amerikai verébfajnak (Ammodramus caudacutus) a legcsalfábbak - hogy szépen fejezzük ki magunkat - a tojói: egy fészekaljra átlagban több mint 2.5 apa jut, minden harmadik fészekaljban pedig minden fiókának más az apja.
Minigekkó, átlátszó béka és társai: új fajokat... →
Ceruza végén is elfér ez a most felfedezett gekkó faj. Az equadori Cerro Pata de Pájaro esőerdeiben új kétéltű és hüllőfajokat fedeztek fel. A Föld azon kevés régiói közé tartozik ahol aránylag kis területen akár 20-30 békafajjal is találkozhatunk (vagyis mintegy két-háromszor több békafajjal mint ahány egy Közép-Európai országban él!).
December 2009
2 posts
Waiting for Synthia
“Waiting for Synthia - that has been the script for enthusiasts of synthetic life for the past two years, ever since genomics pioneer Craig Venter promised to unveil a living bacterial cell carrying a genome made from scratch in the lab. 2010 is the year for him to deliver.
Synthia is the popular name for a species containing a lab-built set of genetic instructions that are close to the...
November 2009
6 posts
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A genetically engineered bacterium makes a greener...
“One of the most promising alternatives to plastics made from oil is polylactic acid (PLA). It is biodegradable, safe enough to be used as food packaging, can be processed like existing thermoplastics into coloured or transparent material and can be manufactured from renewable resources such as maize and sugarcane.
At the moment PLA is usually made in two stages. First, a source of starch...
An Electronic Clue In The Mystery of DNA Repair
Source: http://www.technologyreview.com/blog/arxiv/24420/
“DNA repair machines may home in on the electrical signals created by mutations.
DNA is regularly damaged by ordinary wear and tear and the constant buffeting of ionising radiation. However, cells possess an extraordinary collection of molecular machines such as repair enzymes that rapidly identify the defects and repair them.
...
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Why humans can speak but chimps can't: Evolution... →
“Of the 20,000 genes in the human genome, few are more fascinating than FOXP2, a gene that underlies the faculty of human speech. All animals have an FOXP2 gene, but the human version’s product differs at just 2 of its 740 units from that of chimpanzees, suggesting that this tiny evolutionary fix may hold the key to why people can speak and chimps cannot.
The FOXP2 gene does not do a single...
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A gene for empathy - Torrice 2009 (1116): 3 -... →
“Some people can read your face and know you’ve had a bad day. Others seem oblivious. Now, researchers have pinpointed a genetic explanation for why some people are better empathizers than others.
Empathy is crucial for our everyday social interactions. Scientists have linked a variation, or polymorphism, in the gene that codes for the oxytocin receptor to autism, a disorder defined...
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The $4400 Genome -- Service 2009 (1105): 3 --... →
“Complete Genomics, a Mountain View, California-based biotechnology company sequenced three human genomes for about $4400 each, at least in the cost of reagents. The rapid fall in sequencing prices may give genomics an equivalent of Moore’s Law, which describes how the number of transistors on computer chips doubles every 18 months, steadily driving down the cost of computing power. In...
October 2009
29 posts
Did you know that fruit bats are the only...
Source: PLoS ONE: Fellatio by Fruit Bats Prolongs Copulation Time
Oral sex is widely used in human foreplay, but rarely documented in other animals. Fellatio has been recorded in bonobos Pan paniscus, but even then functions largely as play behaviour among juvenile males. The short-nosed fruit bat Cynopterus sphinx exhibits resource defence polygyny and one sexually active male often roosts with...
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Was our oldest ancestor a proton-powered rock? -... →
These vents form when water reacts with the mineral olivine, which is common in the sea floor - and would have been even more common early on, before the Earth’s crust thickened. The process produces a new mineral, serpentine, and releases hydrogen, alkaline fluids and heat. It also makes the rocks expand and crack, allowing more water to percolate down, sustaining the reaction. The...
The Past 5,000 Years Mark a New Epoch in Human... →
“A team led by University of Wisconsin-Madison anthropologist John Hawks estimated that positive selection just in the past 5,000 years alone -dating back to the Stone Age - has occurred at a rate roughly 100 times higher than any other period of human evolution. Many of the new genetic adjustments are occurring around changes in the human diet brought on by the advent of agriculture, and...
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QuickRoute - simple display of a GPS route on an... →
QuickRoute is a computer program for Windows that allows you to display a route from a GPS device, such as a GPS-clock, on an orienteering map saved as an image file. The main purpose of QuickRoute is to make it quick and simple to transfer your route from a GPS device onto a map.
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World's Smallest Computers Made of DNA and Other... →
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Creating Garmin Custom Maps in Five Easy Steps →
Running the latest beta software releases for Garmin Colorado, Oregon (200, 300, 400 and 550), andDakota devices, using paper maps with Garmin outdoor handhelds is easier than ever with Garmin Custom Maps. This unique feature allows users to combine Garmin map drawing technology with georeferenced map images, effectively putting a paper map inside your Garmin GPS.
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Fotók, megapixelek és gigabyte-ok
2003-ban készítettem az első digitális fotóimat. A 2003 év “fotótermése” még csak 272 MB-t foglalt az akkor soknak számító 8 GB-os merevlemezzel rendelkező asztali számítógépemen (mostmár az egyik Kingston USB memory stickem-nek van ugyanennyi GB-ja), hiszen a fotóim csak egy mindössze 2.1 megapixeles, kölcsönkért Canon Powershot A200-al készültek, amely flashcard-ra...
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Egy kis statisztika - twitter-rel a madarakért
EuroBirdwatch-os twitterezés statisztikája (24 órára):
507 Mobypicture megtekintés
319 Adevarul de Cluj I. újságcikk megtekintés
http://www.adevarul.ro/rss/articol/cluj-video-foto-cu-ochii-dupa-pasari-la-euro-birdwatch-2009.html
181 Adevarul de Cluj II. újságcikk megtekintés
http://www.adevarul.ro/rss/articol/cluj-eurobirdwatch-2009-in-direct-prin-intermediul-twitter.html
Twitteren eljutott...
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Sárgalábú sirály
2009. október 5, ~16.15 két sárgalábú sirály a román opera “jobb oldali” szobrán.
2009 október 6, ~7.20 újra két egyed.
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September 2009
33 posts
