A crystal age

Xem 1-15 trên 15 kết quả A crystal age
  • George Griffith (full name George Chetwyn Griffith-Jones; (1857–1906)) was a prolific British science fiction writer and noted explorer who wrote during the late Victorian and Edwardian age. Many of his visionary tales appeared in magazines such as Pearson's Magazine and Pearson's Weekly before being published as novels. Griffith was extremely popular in the United Kingdom, though he failed to find similar acclaim in the United States, in part due to his revolutionary and socialist views.

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  • William Henry Hudson (August 4, 1841 – August 18, 1922) was an author, naturalist and ornithologist. Hudson was born in the Quilmes Partido in Buenos Aires Province, Argentina, son of settlers of U.S. origin. He spent his youth studying the local flora and fauna and observing both natural and human dramas on what was then a lawless frontier, publishing his ornithological work in Proceedings of the Royal Zoological Society, initially in an English mingled with Spanish idioms. He settled in England during 1869.

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  • The protracted struggle between science and the classics appears to be drawing to a close, with victory about to perch on the banner of science, as a perusal of almost any university or college catalogue shows. While a limited knowledge of both Greek and Latin is important for the correct use of our own language, the amount till recently required, in my judgment, has been absurdly out of proportion to the intrinsic value of these branches, or perhaps more correctly roots, of study.

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  • John Richard Jefferies (November 6, 1848 - August 14, 1887 ) was an English nature writer, essayist and journalist. He wrote fiction mainly based on farming and rural life. He was born at Coate, near Swindon, Wiltshire, the son of a farmer. From early in life he showed a great love of the countryside, but was temperamentally unsuited to follow his father as a farmer, and in 1866 he found employment as a newspaper reporter for the North Wiltshire Herald and the Swindon Advertiser. His birthplace and home is a museum open to the public.

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  • Ascorbic acid is often regarded as an antioxidantin vivo, where it protects against cancer by scavenging DNA-dam-aging reactive oxygen species. However, the detailed mech-anism of the action of ascorbic acid on genetic DNA is still unclear. We examined the effect of ascorbic acid on the higher-order structure of DNA through real-time observa-tion by fluorescence microscopy. We found that ascorbic acid generates a pearling structure in single giant DNA molecules, with elongated and compact regions coexisting along a molecular chain. ...

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  • The ÔMediterraneanÕ variant of glucose-6-phosphate dehydrogenase (G6PD) deficiency is due to the C563CT point mutation, leading to replacement of Ser with Phe at position 188, resulting in acute haemolysis triggered by oxidants. Previous work has shown increased formation of altered aspartate residues in membrane proteins during cell ageing and in response to oxidative stress in normal erythrocytes. These abnormal residues are specifically recognized by the repair enzyme L-isoaspartate (D-aspartate) protein O-methyltransferase (PCMT; EC ...

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  • Oocyte membrane localization of vitellogenin receptor coincides with queen flying age, and receptor silencing by RNAi disrupts egg formation in fire ant virgin queens Hsiao-Ling Lu, S. B. Vinson and Patricia V. Pietrantonio Department of Entomology, Texas A&M University, College Station, TX, USA Keywords insect ovary; insect reproduction; oocyte development; RNA interference; social insects Correspondence P. V. Pietrantonio, Department of Entomology, Texas A&M University, College Station, TX 77843-2475, USA Fax: +1 979 845 6305 Tel: +1 979 845 9728 E-mail: p-pietrantonio@tamu.

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  • Apoptotic neuronal cell death is the cardinal feature of aging and neurode-generative diseases, but its mechanisms remain obscure. Caspases, members of the cysteine protease family, are known to be critical effectors in central nervous system cellular apoptosis. More recently, the calcium-dependent proteases, calpains, have been implicated in cellular apoptotic processes. Indeed, several members of the Bcl-2 family of cell death regulators, nuc-lear transcription factors (p53) and caspases themselves are processed by calpains. ...

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  • Tham khảo sách 'the black star passes', giải trí - thư giãn, truyện ngắn phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • It was 2538 years After the Year of the Son of Man. For six centuries mankind had been developing machines. The Ear-apparatus was discovered as early as seven hundred years before. The Eye came later, the Brain came much later. But by 2500, the machines had been developed to think, and act and work with perfect independence. Man lived on the products of the machine, and the machines lived to themselves very happily, and contentedly. Machines are designed to help and cooperate. It was easy to do the simple duties they needed to do that men might live well. And men had created them.

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  • Tham khảo sách 'the ultimate weapon', giải trí - thư giãn, truyện ngắn phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • An overview of the results of our association studies on candi-date genes for human longevity performed in Italian centenarians will be presented. Many genes gave negative results but others showed a positive or negative association with human longevity. Among the last ones a particular attention will be paid to the genes involved in inflammation (IL-6, IL-10, TGFbeta, TLR-4,PPARgamma2), Insulin/IGF-1 signalling pathway and lipid metabolism (Apolipoproteins, CEPT).

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  • A generic sample normalization method applicable in relative comparison of mRNAs quantified with real-time polymerase chain reaction (PCR) is proposed. The method was applied in samples obtained from tomato seeds after osmopriming and aging treatments and from untreated seeds at early imbibition stage, when seeds had not completed germination.

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  • Hydrogenated amorphous silicon, a new form of a common element, is a semiconductor that has come of age. Its scientific attractions include a continuously adjustable band gap, a usable camer lifetime and diffusion length, efficient optical transitions, and the capability of employing either nor p-type dopants. Furthermore, it can be fabricated very easily as a thin film by a technology that not only inherently escapes the expenst: of crystal perfection but also requires significantly smaller amounts of raw materials....

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  • You add shading in layers by working from light to dark, while rendering a highly detailed human eye with a combination of three graduated shading techniques - hatching, crosshatching, and squirkling. Eyes are the most expressive facial feature. The shapes and sizes of people’s eyes can help identify their gender, age, and cultural origin. In a portrait, the eyes alone can often identify who the person is. The eye in this project belongs to a beautiful young lady named Melissa, who is the daughter of my friend Crystal Basta....

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