Dark matter

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  • This book provides readers with a clear progress to theoretical and observational astrophysics. It is not surprising that astrophysics is continually growing because very sophisticated telescopes are being developed and they bring the universe closer and make it accessible. Astrophysics Book presents a unique opportunity for readers to demonstrate processes do occur in Nature.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Shedding new light on genetic dark matter

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  • Rất nhiều người chưa có nghiên cứu nhiều về vũ trụ học thường nhầm lẫn 2 khái niệm này, coi chúng là một. Thực chất vật chất tối (dark matter) và năng lượng tối (dark energy) là 2 khái niệm hoàn toàn độc lập từ lịch sử đên bản chất. Chúng ta sẽ nói trước tiên về vật chất tối (dark matter) Năm 1933, Fritz Zwicky phát hiện ra sự xuất hiện của loại vật chất này khi đo vận tốc của các thiên hà trong quần thiên hà Coma.

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  • The heroine of this book is nature’s simplest atom, the hydrogen atom. With one exception—the helium atom—hydrogen is the mother of all atoms and molecules. The hydrogen atom consists of a single electron and a single proton; the proton is the nucleus of the hydrogen atom and serves as the electron’s anchor. The universe is teeming with hydrogen: every cubic centimeter of dark interstellar space, essentially void of any other known matter,1 contains a few atoms of hydrogen

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  • The twentieth century elevated our understanding of the Universe from its early stages to what it is today and what is to become of it. Cosmology is the weapon that utilizes all the scientific tools that we have created to feel less lost in the immensity of our Universe. The standard model is the theory that explains the best what we observe. Even with all the successes that this theory had, two main questions are still to be answered: What is the nature of dark matter and dark energy? This book attempts to understand these questions while giving some of...

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  • Men engaged in Intelligence Services during a war divide their particular opponents into two classes. One consists of neutrals who go out of their way to help the enemy for the sake of gain; and for such men we have not much compassion should they fall upon misfortune. They are interfering in great matters with which they are not concerned, in order to make a little money. The other class is made up of men who, abandoning the opportunities of their own careers, go secretly away in the sacred service of their country, play a lone hand, and run the gauntlet of foreign laws. For...

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  • In this lesson we will consider techniques to interface to a TV screen or, for that matter, to any display that can accept a standard composite video signal. • It will be a good excuse to use new features of several peripheral modules of the PIC24 and review new programming techniques. • Our first project objective will be to get a nice dark screen (a well-synchronized video frame), but we will soon fill it up with several entertaining graphical applications.

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  • Bronchial anthracosis is defined as appearance of multiple dark anthracotic pigmentations on large airway mucosa with or without airway narrowing or obliteration. Since there has been vague and controversy regarding the relationship between bronchial anthracosis and pulmonary tuberculosis, we conducted this study to shed light on this matter. Materials and Methods: In this cross-sectional study, data was obtained from reviewing the files of 1,594 patients who underwent bronchoscopy in Afzalipour Hospital during 2003 to 2007.

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  • "I dare say 'tis a wild, foolish, dangerous thing; but I do it, nevertheless! As for my reasons, they are the strongest. First, I wish to do it. Second, you've all opposed my doing it. So there's an end of the matter!" It was, of course, a woman that spoke,--moreover, a young one. And she added: "Drat the wind! Can't we ride faster? 'Twill be dark before we reach the manor-house. Get along, Cato!" She was one of three on horseback, who went northward on the Albany post-road late in the afternoon of a gray, chill, blowy day in November, in the war-scourged year 1778. Beside...

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  • Blinded by the bomb-flash and numbed by the narcotic injection, he could not estimate the extent of his injuries, but he knew that he was dying. Around him, in the darkness, voices sounded as through a thick wall. "They mighta left mosta these Joes where they was. Half of them won't even last till the truck comes." "No matter; so long as they're alive, they must be treated," another voice, crisp and cultivated, rebuked. "Better start taking names, while we're waiting.

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  • NO MATTER HOW SELF-ASSURED WE ARE, in a fraction of a second, our lives can be utterly devastated. As in the biblical story of Jonah, the unknowable forces of trauma and loss can swallow us whole, thrusting us deep into their cold dark belly. Entrapped yet lost, we become hopelessly frozen by terror and helplessness. Early in the year 2005,1 walked out of my house into a balmy Southern California morning. The gende warmth and soft sea breeze gave a lift to my step.

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