turn iphone notifications off at night
Báo cáo khoa học: Abortive translation caused by peptidyl-tRNA drop-off at NGG codons in the early coding region of mRNA potx
... translational reading frame giving premature termination at some out-of-phase ter- mination codon. However, this explanation does not seem to be valid. Another possibility would be drop- off of ... pausing at position +7 should also interfere with ribosome loading at the translational start site even if the effect could possibly be smaller. Alternat- ively, if the codon is rapidly translated at ... overnight at 37 °C in minimal medium [45] supplemented with all amino acids at recom- mended concentrations [8] and 100 lgặmL )1 ampicillin. These cultures were used to inoculate fresh medium at 37...
Ngày tải lên: 30/03/2014, 20:20
The Sky at Night Phần 1 pdf
... was aimed at Tempel 1 in 2005, Hubble was very much a part of the observational programme. But it was in “deep space” that The Sky at Night vii Introduction This new book, the Sky at Night series ... Sky at Night programmes, with Sir Patrick at the helm presenting the show, reminding us why we should step outside and look up at the night sky. There is a whole universe out there, and Sir Patrick ... 1990 and watching the telescope launched; that was a great moment, but a few weeks later it became painfully clear that something was wrong. The images were blurred. It was found that mirror...
Ngày tải lên: 05/08/2014, 14:20
The Sky at Night Phần 2 pps
... so that it keeps the same face turned towards Saturn all the time, just as our Moon behaves with respect to Earth. At western elon- gation the bright hemisphere is turned towards us, while at ... indicated that the material had not been “sprayed on”. There have been suggestions that it had been knocked off the more distant satellite Phoebe, which is a full 8,000,000 miles from Saturn ... landscape showed what were obvious drainage channels – but of liquid methane rather than water. Later analyses taken together with the results from fly-by encounters indicate that there is almost...
Ngày tải lên: 05/08/2014, 14:20
The Sky at Night Phần 3 doc
... plane of Saturn’s equator by almost 16°, and travellers will see the rings well displayed – while the inner satellites, including Titan, orbit almost in the equatorial plane so that seen from ... observational programmes concerns stars which may be attended by planets, and here its latest camera, Scuba – installed just before the Sky at Night team arrived – has been particularly informative. An ... are no craters at all. This must mean that these areas are young, and have been resurfaced in comparatively recent times. When Cassini flew past Enceladus on 17th of February 2005, at a range...
Ngày tải lên: 05/08/2014, 14:20
The Sky at Night Phần 4 ppt
... a hot, presumably silicate core, the overall density of the globe is less than that of water. It is often said that if you could drop Saturn into an ocean, it would float – but finding an ocean ... trapped by Saturn’s strong magnetic field and plunged down into the upper atmosphere, making it glow. Saturnian aurorae are brightest in high latitudes north and south because the rotational axis ... early history the situation was chaotic. At one time, Jupiter and Saturn may have been in a 2:1 resonance, Jupiter making two orbits round the Sun for every one of Saturn’s. Uranus has an unusual...
Ngày tải lên: 05/08/2014, 14:20
The Sky at Night Phần 5 ppsx
... tropical vegetation, there seemed no reason to doubt that there might be oceans, and that the climate was no more than tolerably hot. The probes of the 1960s and 1970s showed that this attractive ... that they were illuminations lit by the Venusians to celebrate the accession of a new Emperor, while others believed that there were electrical storms in the upper atmosphere, similar in nature ... relegated the programme to two o’clock in the morning. On the previous month he had forgotten to schedule the Sky at Night at all, with the result that the programme was transmitted a week late....
Ngày tải lên: 05/08/2014, 14:20
The Sky at Night Phần 6 pptx
... classes as ice giants). Its equatorial diameter is almost 75,000 miles, but its rapid rotation – less than 11 h – makes the equator bulge out so that in shape Saturn resembles a slightly squashed ... achievements to date. Cassini continued happily on its way, and regularly sent back data and images of Saturn and the satellites. Titan was a prime target. It was expected to be fascinat- ing, and ... extensive vegetation tracts on Mars, that Venus was partly covered by ocean, that the four Galilean satellites of Jupiter were barren and rocky, that Pluto was a bona-fide planet, and that many of...
Ngày tải lên: 05/08/2014, 14:20
Báo cáo y học: "Preliminary evidence for a change in spectral sensitivity of the circadian system at night" potx
Ngày tải lên: 10/08/2014, 09:20
Tài liệu GTO (GATE TURN OFF THYRISTOR ) pptx
... khả năng ngắt nhanh. Các linh kiện này gồm MTO (MOS Turn- Off Thyristor), ETO (Emitter Turn- Off Thyristor) vaø IGCT (Integrated Gate-Commutated Thyristor). Bảng B1.7: Các thông số cơ bản của ... 1.9 IGCT (INTEGRATED GATE COMMUTATED THYRISTOR) Cấu tạo và chức năng: Sự cải tiến công nghệ chế tạo GTO thyristor đã dẫn đến phát minh công nghệ IGCT. GCT –Gate –Commutated Thyristor là ... lại là nó tạo điều kiện để chuyển dòng điện từ cathode sang mạch cổng thực hiện hoàn toàn và nhanh chóng, cho phép ngắt đồng thời tất cả các cathode trong cấu hình linh kiện. Điểm không thuận...
Ngày tải lên: 13/12/2013, 11:15
national tv turn off week a dumb idea
... Right? Well, that's what people all across North America are doing every day. In fact, there is a full week dedicated to the cause: National T.V-Turnoff Week. National T.V-Turnoff week is nothing ... it comes down to it what do you really get out of knitting that you wouldn't get out of watching television? A sweater, maybe? Sure, you might just knit a sweater that you could wear on the odd ... But what do they know? Have they ever done any research to prove their theories? No, they haven't. But the people behind such propaganda as National T.V-Turnoff Week really do believe that...
Ngày tải lên: 21/03/2014, 22:10