Monday, December 24, 2012

martamatali: humus arbores: candida carnation: Biology Syllabus ...

If you?re encountered with biology syllabus assessment in that case he/she really needs to fully grasp the exact objectives to make sure that he/she are able to comprehend the objective. There are 3 well-known objectives concerning learning the field of biology which generally are to have practical knowledge with understanding, ability to actually deal with important information and resolve issues in conjunction with learning experimental skillsets as well as inspections.

The actual Biology Syllabus entails of scientific phenomena specifics hence these particular 3 important objectives are crucial for the main assessment procedure. A few other reasons for assessment are to be capable of making predictions, address issues, manipulate data and locate ideal sources to get knowledge acquisition.

19 December 2012 | Reference and Education

Source: http://www.apodimosstudents.com/reference-and-education/biology-syllabus-so-what-does-the-subject-focused-on/

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Source: http://otvtekod.posterous.com/biology-syllabus-so-what-does-the-subject-foc

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Source: http://candida-carnation.blogspot.com/2012/12/biology-syllabus-so-what-does-subject.html

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Source: http://humus-arbores.blogspot.com/2012/12/candida-carnation-biology-syllabus-so.html

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Source: http://martamatali.blogspot.com/2012/12/humus-arbores-candida-carnation-biology.html

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Sunday, December 23, 2012

Paleo-ocean chemistry: New data challenge old views about evolution of early life

Dec. 23, 2012 ? A research team led by biogeochemists at the University of California, Riverside has tested a popular hypothesis in paleo-ocean chemistry, and proved it false.

The fossil record indicates that eukaryotes -- single-celled and multicellular organisms with more complex cellular structures compared to prokaryotes, such as bacteria -- show limited morphological and functional diversity before 800-600 million years ago. Many researchers attribute the delayed diversification and proliferation of eukaryotes, which culminated in the appearance of complex animals about 600 million years ago, to very low levels of the trace metal zinc in seawater.

As it is for humans, zinc is essential for a wide range of basic cellular processes. Zinc-binding proteins, primarily located in the cell nucleus, are involved in the regulation of gene transcription.

Eukaryotes have increasingly incorporated zinc-binding structures during the last third of their evolutionary history and still employ both early- and late-evolving zinc-binding protein structures. Zinc is, therefore, of particular importance to eukaryotic organisms. And so it is not a stretch to blame the 1-2-billion-year delay in the diversification of eukaryotes on low bioavailability of this trace metal.

But after analyzing marine black shale samples from North America, Africa, Australia, Asia and Europe, ranging in age from 2.7 billion years to 580 million years old, the researchers found that the shales reflect high seawater zinc availability and that zinc concentrations during the Proterozoic (2.5 billion to 542 million years ago) were similar to modern concentrations. Zinc, the researchers posit, was never biolimiting.

Study results appear online Dec. 23 in Nature Geoscience.

"We argue that the concentration of zinc in ancient marine black shales is directly related to the concentrations of zinc in seawater and show that zinc is abundant in these rocks throughout Earth's history," said Clint Scott, the first author of the research paper and a former UC Riverside graduate student. "We found no evidence for zinc biolimitation in seawater."

Scott, now a research geologist with the U.S. Geological Survey, explained that the connection between zinc limitation and the evolution of eukaryotes was based largely on the hypothesis that Proterozoic oceans were broadly sulfidic. Under broadly sulfidic conditions, zinc should have been scarce because it would have rapidly precipitated in the oceans, he explained.

"However, a 2011 research paper in Nature also published by our group at UCR demonstrated that Proterozoic oceans were more likely broadly ferruginous -- that is, low in oxygen and iron-rich -- and that sulfidic conditions were more restricted than previously thought," said Scott, who performed the research in the lab of Timothy Lyons, a professor of biogeochemistry and the principal investigator of the research project.

The research team argues that ferruginous deep oceans, combined with large hydrothermal fluxes of zinc via volcanic activity on the seafloor, maintained high levels of dissolved zinc throughout the oceans and provided a relatively stable marine reservoir of the trace metal over the past 2.7 billion years.

"The key challenge in understanding the early evolution of life is recognizing the environmental conditions under which that life first appeared and diversified," Lyons said. "We have taken a very direct approach that specifically tracks the availability of essential micronutrients, and, to our surprise, zinc supplies in ancient seawater were much higher and less variable than previously imagined.

"We can imagine for the first time," he quipped, "that zinc supplements were not on the shopping lists of our early eukaryotic ancestors, and so we better find another reason to explain the mysterious delay in their rise in the ocean."

Scott, who graduated with a doctoral degree in geological sciences from UCR in 2009, and Lyons were joined in the study by Noah J. Planavsky, a former UCR graduate student in Lyons' lab; Chris L. Dupont at the J. Craig Venter Institute, La Jolla, Calif.; Brian Kendall and Ariel D. Anbar at Arizona State University; Benjamin C. Gill at Virginia Polytechnic Institute and State University and also a former member of the Lyons lab; Leslie J. Robbins and Kurt O. Konhauser at the University of Alberta, Canada; Kathryn F. Husband and Simon W. Poulton at the University of Leeds, United Kingdom; Gail L. Arnold at the Max Planck Institute for Marine Microbiology, Germany; Boswell A. Wing at McGill University, Canada; and Andrey Bekker at the University of Manitoba, Canada.

The idea for the study was a direct consequence of the 2011 Nature paper by Planavsky, Scott, Lyons and others that challenged the hypothesis of broadly sulfidic oceans.

The international collaboration received funding for the study from numerous sources. In the U.S., funding came from the National Science Foundation, the NASA Astrobiology Institute and the Agouron Institute.

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Story Source:

The above story is reprinted from materials provided by University of California - Riverside. The original article was written by Iqbal Pittalwala.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Clint Scott, Noah J. Planavsky, Chris L. Dupont, Brian Kendall, Benjamin C. Gill, Leslie J. Robbins, Kathryn F. Husband, Gail L. Arnold, Boswell A. Wing, Simon W. Poulton, Andrey Bekker, Ariel D. Anbar, Kurt O. Konhauser, Timothy W. Lyons. Bioavailability of zinc in marine systems through time. Nature Geoscience, 2012; DOI: 10.1038/ngeo1679

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_environment/~3/DC5qaP7AZPY/121223152736.htm

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arunkumar25886: iormina hacienda: candida carnation: Biology ...

If you?re encountered with biology syllabus assessment in that case he/she really needs to fully grasp the exact objectives to make sure that he/she are able to comprehend the objective. There are 3 well-known objectives concerning learning the field of biology which generally are to have practical knowledge with understanding, ability to actually deal with important information and resolve issues in conjunction with learning experimental skillsets as well as inspections.

The actual Biology Syllabus entails of scientific phenomena specifics hence these particular 3 important objectives are crucial for the main assessment procedure. A few other reasons for assessment are to be capable of making predictions, address issues, manipulate data and locate ideal sources to get knowledge acquisition.

19 December 2012 | Reference and Education

Source: http://www.apodimosstudents.com/reference-and-education/biology-syllabus-so-what-does-the-subject-focused-on/

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Source: http://otvtekod.posterous.com/biology-syllabus-so-what-does-the-subject-foc

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Source: http://candida-carnation.blogspot.com/2012/12/biology-syllabus-so-what-does-subject.html

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Source: http://arunkumar25886.blogspot.com/2012/12/iormina-hacienda-candida-carnation.html

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Lightbank Aims To Change The VC Game As It Expands Its Investments Beyond Chicago

lightbankThere's a lot of talk about disruption in the venture capital world. We've?discussed?at length the shift that many VCs are making from simply writing a check to serving as a hands-on, end-to-end service driven by seasoned operators and former founders. Chicago-based Lightbank, the VC firm started by Groupon seed investors Eric Lefkofsky and Brad Keywell, have a similar approach but with one major difference: the firm's fund, which is around $200 million, is composed of mainly Keywell and Lefkofsky's personal money, not that of LPs (NEA has put a small amount in the firm, but is not considered an L.P.).

Source: http://feedproxy.google.com/~r/Techcrunch/~3/JQYoYRZw_oc/

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Article Submission And Press Release Enhances Link Popularity ...

Number of View: 16

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Article submission is an effective method one can use to increase the online presence of the website. It is such a method that will guarantee you with increased traffic and will help in making the website visible to more number of people. It is a very simple process that is followed in article submission. First one has to write an article and then upload it to various article directory sites which consist of different consolidated articles. The articles on getting selected are republished by various other directories and if chosen can be published and ranked on top.

Some Top Directory Site List and Article site List and Link Building Popularity for help web traffic with back-link?s support.

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The article submission service mainly consists of manually submitted works. It is important to submit well written articles and getting it submitted to as much directories as possible. It is a time consuming task so it becomes important to submit articles via good submission services so that less time is consumed. The problems that are faced like acceptance and denials are all handled by the article submission service.

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One can also utilize blog review services apart from the two services described above. The blog writers often search for feedback and comments about their written articles on their blogs. A large number of blogs will allow one to comment and also to leave a link connecting your site. But it is also important that the comment makes sense to the blog and one should not merely comment just to leave a link back to the website. It is necessary to read the blog carefully and then only leave a comment. Copying and pasting the same review on many blogs will result in spam.

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The estimated reading time for this post is 181 seconds

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Source: http://www.earningmaster.com/2012/12/23/article-submission-and-press-release-enhances-link-popularity/

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Egypt's disputed charter headed toward approval

CAIRO (AP) ? Egypt's Islamist-backed constitution headed toward likely approval in a final round of voting on Saturday, but the deep divisions it has opened up threaten to fuel continued turmoil.

Passage is a victory for Islamist President Mohammed Morsi, but a costly one. The bruising battle over the past month stripped away hope that the long-awaited constitution would bring a national consensus on the path Egypt will take after shedding its autocratic ruler Hosni Mubarak nearly two years ago.

Instead, Morsi disillusioned many non-Islamists who had once backed him and has become more reliant on his core support in the Muslim Brotherhood and other Islamists. Hard-liners in his camp are determined to implement provisions for stricter rule by Islamic law in the charter, which is likely to futher fuel divisions.

His liberal and secular opposition, in turn, faces the task of trying to organize the significant portion of the population angered by what they see as attempts by Morsi and the Brotherhood to gain a lock on political power. The main opposition group, the National Salvation Front, said it would now start rallying for elections for the next lawmaking, lower house of parliament, expected early next year.

"We feel more empowered because of the referendum. We proved that at least we are half of society (that) doesn't approve of all this. We will build on it," the Front's spokesman, Khaled Daoud, said. Still, he said, there was "no appetite" at the moment for further street protests.

Saturday's voting in 17 of Egypt's 27 provinces was the second and final round of the referendum. Though the constitution is widely expected to pass, the key questions will be over turnout and the margin of victory. Preliminary results from the first round a week ago showed only 32 percent turnout and a relatively low edge of 56 percent for the "yes" vote. Preliminary results from the second round are expected to emerge by early Sunday.

The new constitution would come into effect once official results are announced, expected in several days.

In a sign of disarray in Morsi's administration, his vice president and ? possibly ? the central bank governor resigned during Saturday's voting. Vice President Mahmoud Mekki's resignation had been expected since his post is eliminated under the new constitution. But its hasty submission even before the charter has been sealed and his own resignation statement suggested it was linked to Morsi's policies.

"I have realized a while ago that the nature of politics don't suit my professional background as a judge," his resignation letter, read on state TV, said. Mekki said he had first submitted his resignation last month but events forced him to stay on.

The status of Central Bank Governor Farouq el-Oqdah was murkier. State TV first reported his resignation, then soon after reported the Cabinet denied he has stepped down in a possible sing of confusion. El-Oqdah, in his post since 2003, has reportedly been seeking to step down but in recent weeks the administration was trying to convince him to stay on. The government is eager to show some stability in the economy as the Egyptian pound has been sliding and a much-needed $4.8 billion loan from the IMF has been postponed.

Over the past month, seven of Morsi's 17 top advisers and the one Christian among his top four aides resigned. Like Mekki, they said they had never been consulted in advance on any of the president's moves, including his Nov. 22 decrees, since rescinded, that granted himself near absolute powers.

Those decrees sparked large street protests by hundreds of thousands around the country, bringing counter-rallies by Islamists. The turmoil was further fueled with a Constituent Assembly almost entirely made up of Islamists finalized the constitution draft in the dead of night amid a boycott by liberals and Christians. Rallies turned violent. Brotherhood offices were attacked, and Islamists attacked an opposition sit-in outside the presidential palace in Cairo leading to clashes that left 10 dead.

The turmoil opened up a vein of bitterness that the polarizing constitution will do little to close. Morsi opponents accused him of seeking to create a new Mubarak-style autocracy. The Brotherhood accused his rivals of being former Mubarak officials trying to topple an elected president and return to power. Islamists branded opponents "infidels" and vowed they will never accept anything but "God's law" in Egypt.

Both rounds of voting saw claims by the opposition and rights groups of voting violations. On Saturday they said violations ranged from polling stations opening late to Islamists seeking to influence voters to say "yes." The official MENA news agency said at least two judges have been removed for coercing voters to cast "yes" ballots.

The opposition's talk of now taking the contest to the parliament elections represented a shift in the conflict ? an implicit gamble that the opposition can try to compete under rules that the Islamists have set. The Brotherhood's electoral machine has been one of its strongest tools since Mubarak's fall, while liberal and secular parties have been divided and failed to create a grassroots network.

In the first post-Mubarak parliament elections last winter, the Brotherhood and ultraconservative Salafis won more than 70 percent of seats in the lower chamber, which was later dissolved by a court order. The opposition is now betting it can do better with the anger over Morsi's performance so far.

The schism in a country that has for decades seen its institutions function behind a facade of stability was on display in Saturday's lines of voters.

In the village of Ikhsas in the Giza countryside south of Cairo, an elderly man who voted "no" screamed in the polling station that the charter is "a Brotherhood constitution."

"We want a constitution in the interest of Egypt. We want a constitution that serves everyone, not just the Brotherhood. They can't keep fooling the people," Ali Hassan, a 68-year-old wearing traditional robes, said.

But others were drawn by the hope that a constitution would finally bring some stability after nearly two years of tumultuous transitional politics. There appeared to be a broad economic split, with many of the middle and upper classes rejecting the charter and the poor voting "yes" ? though the division was not always clear-cut.

In Ikhsas, Hassan Kamel, a 49-year-old day worker, said "We the poor will pay the price" of a no vote.

He dismissed the opposition leadership as elite and out of touch. "Show me an office for any of those parties that say no here in Ikhsas or south of Cairo. They are not connecting with people."

In the industrial working class district of Shubra El-Kheima just north of Cairo, women argued while waiting in line over the draft charter.

Samira Saad, a 55 year old housewife, said she wanted her five boys to find jobs.

"We want to get on with things and we want things to be better," she said.

Nahed Nessim, a Christian, questioned the integrity of the process. "There is a lot of corruption. My vote won't count." She was taken to task by Muslim women wearing the niqab, which blankets the entire body and leaves only the eyes visible and is worn by ultraconservative women.

"We have a president who fears God and memorizes His words. Why are we not giving him a chance until he stands on his feet?" said one of the women, Faiza Mehana, 48.

The promise of stability even drew one Christian woman in Fayoum, southwest of Cairo, to vote "yes" ? a break with most Christians nationwide who oppose the draft. Hanaa Zaki said she wanted an end to Egypt's deepening economic woes.

"I have a son who didn't get paid for the past six months. We have been in this crisis for so long and we are fed up," said Zaki, waiting in line along with bearded Muslim men and Muslim women wearing headscarves in Fayoum, a province that is home to both a large Christian community and a strong Islamist movement.

The scene In Giza's upscale Mohandiseen neighborhood was starkly different.

A group of 12 women speaking to each other in a mix of French, Arabic and English said they were all voting "no."

"It's not about Christian versus Muslim, it is Muslim Brotherhood versus everyone else," said one of them, Shahira Sadeq, a Christian physician.

Kamla el-Tantawi, 65, said she was voted "against what I'm seeing" ? and she gestured at a woman nearby wearing the niqab.

"I lose sleep thinking about my grandchildren and their future. They never saw the beautiful Egypt we did," she said, harkening back to a time decades ago when few women even wore headscarves covering their hair, much less the black niqab.

Many voters were under no illusions the turmoil would end.

"I don't trust the Brotherhood anymore and I don't trust the opposition either. We are forgotten, the most miserable and the first to suffer," said Azouz Ayesh, sitting with his neighbors as their cattle grazed in a nearby field in the Fayoum countryside.

He said a "yes" would bring stability and a "no" would mean no stability. But, he added, "I will vote against this constitution."

___

Associated Press writers Maggie Michael in Fayoum, Egypt, and Aya Batrawy, in Cairo, contributed to this report.

.

Source: http://news.yahoo.com/egypts-disputed-charter-headed-toward-approval-215405068.html

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Medium Becomes A More Full-Featured Writing Platform, Adds Stats And Explains Lack Of Commenting

509783991_1618d787ae_zWe’ve told you a bit about the latest writing and blogging platform from Ev Williams’ new product, Medium, and the team has been incrementally adding things, and talent, to the service to make it a full-featured interactive service. It’s been fun watching it evolve, albeit in private, read-only beta, and you can start to see a fuller picture of what it can be. In an email to Medium users last night, the team shared some new functionality that will allow writers and readers to dive a bit deeper into the content that they see in front of them. The really interesting thing is that Medium discusses its thoughts on “commenting”, which I think you’ll find refreshing: Stats: As of this afternoon, you can see what kind of attention your posts are getting and how people are reacting to them. The goal of Medium is to enable and support quality, rather than just popularity, so our philosophy around stats is that we need to provide meaningful metrics. Medium stats provide feedback that normal web analytics don’t give you. Reader Interaction: One thing you may have noticed about Medium is its lack of comments at the bottom of pages?which seems to have become an unfortunately ubiquitous feature of the web. We believe that normal web comments don’t add a lot of value on average (at least of the type we’re looking to create). However, we do think there is value to be had in reader feedback and interactivity. So, we’re working on a way of allowing reader participation (on an optional basis) that offers something new and different that comments don’t. We hope to have it on the site (at least to test out) by mid-January. As far as stats go, the Medium dashboard is pretty simple and what you’d expect. Until now, as a writer, you’d only be notified if your post was added to a “Collection,” a way of someone re-sharing your piece. This gives you more of an idea of how many people actually read your story: But wait, there’s a stat called “reads,” which is different than “views.” This means that the team is working on a way to figure out how many people actually made it through your story and didn’t just click and glance. That’s huge for writers, and, at the end of the day, readers. Knowing what you’ve really read, or even close to it,

Source: http://feedproxy.google.com/~r/Techcrunch/~3/chbtEI9kUCo/

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