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Journal Radiomir

Journal Radiomir

You can free and without registration download magazines Radiomir 2002-2013.,
for each year - all issues from January to December: No. 1 January, No. 2 February, No. 3 March, No. 4 April, No. 5 May, No. 6 June, No. 7 July, No. 8 August, No. 9 September, No. 10 October , No. 11 November, No. 12 December. The archive of journal issues is regularly supplemented.

Contents of Radiomir magazines 2002-2013

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Magazine Radiomir free download. Choose the year you need 2002-2013:

Journal Radiomir 2002 (archive for the year)

Journal Radiomir 2003 (archive for the year)

Journal Radiomir 2004 (archive for the year)

Journal Radiomir 2005 (archive for the year)

Journal Radiomir 2006 (archive for the year)

Journal Radiomir 2007 (archive for the year)

Journal Radiomir 2008 (archive for the year)

Journal Radiomir 2009 (archive for the year)

Journal Radiomir 2010 (archive for the year)

Journal Radiomir 2011 (archive for the year)

Journal Radiomir 2012 (archive for the year)

Journal Radiomir 2013 (archive for the year)

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Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

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Random news from the Archive

Nitroglycerin May Cause Migraines and Abnormal Cardiovascular Reactions 18.12.2019

In addition to the recognized migraine-provoking effects of nitroglycerin, a study reports abnormal cardiovascular regulation of this compound in patients with migraine.

Nitroglycerin is a potent vasodilator and is known to cause migraine attacks in migraine patients. Due to its vasodilating properties, nitroglycerin is used in cardiovascular studies to test for cardiovascular changes in blood pressure measurements secondary to venous pooling. For example, nitroglycerin is used to test baroreflex function in individuals with vasovagal syncope, which is common in migraine patients.

Scientists at the Leiden University Medical Center assessed cardiovascular parameters using photoplethysmography (blood pressure, heart rate, stroke volume, cardiac output, peripheral resistance) before (-10 min), during intravenous nitroglycerin administration (20 min) and after nitroglycerin administration (10 min.) They compared the differences between migraine patients who had nitroglycerin-induced attacks and healthy controls. The presence of vasovagal syncope was also taken into account.

Ten healthy participants and 16 patients with migraine were included in the study. Thirteen of 16 patients (81,3%) had migraine attacks after nitroglycerin infusion, versus none in the control group. Vasovagal syncope was not provoked. Patients with migraine showed a higher heart rate in response to nitroglycerin infusion. In a subgroup analysis of patients with migraine divided into patients with early attacks (those who had attacks <270 minutes after NTG infusion) or late attacks (at >270 minutes), stroke volume and cardiac output were reduced in both cases within migraine group compared to the healthy control group, with a more pronounced reduction in the early-onset migraine group.

The authors interpret these data with caution as the study was underpowered with a small sample size. Dr. van Oosterhout said, "The increased systemic circulatory response to nitroglycerin in migraine suggests that the systemic vasculature is more susceptible to its (vasodilating) effects." And adds: "Sensitivity to nitric oxide (NO) may be increased, possibly due to higher perivascular concentrations of NO synthase." Finally, although none of the participants had vasovagal syncope, the authors do not rule out a common susceptibility to migraine attacks and vasovagal syncope, as some patients in this study also experienced vasovagal syncope in life.

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