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Objective To explore the feasibility of retroviral-mediated Flt 3 ligand (FL) and thrombopoietin (Tpo) genes transferred into and expressed in a bone marrow stromal cell line HFCL by internal ribosome entry site（IRES）sequence. Methods IRES sequence, FL and Tpo cDNA were recombined with retroviral vector pLXSN by gene recombination technology. The recombinant plasmid was transferred into retrovirus

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Recent investigations-of the interaction between DNA and alkyltrimethyl ammonium bromides of various chain lengths are reviewed. Several techniques have been used such as phase map determinations, fluorescence microscopy, and electron microscopy. Dissociation of the DNA-surfactant complexes, by the addition of anionic surfactant, has received special attention. Precipitation maps for DNA-cationic

Some colors might have different connotations depending on people’s cultural backgrounds. When talking about evacuation, the color employed for exit signs and flashing lights plays a significant role because it is in charge of transmitting a message to the evacuees, either danger or safety. The aims of this study are to evaluate the influence of red and green emergency wayfinding systems on people

Peking drabbades i januari 2013 av en smogkatastrof av aldrig tidigare uppmätt slag. Incidenten, känd som ”Airpocalypse”, blev en världsnyhet och satte mer än någonsin tidigare fokus på stadens omfattande luftföroreningsproblem. Den här uppsatsen redogör för omfattningen av och orsakerna bakom luftföroreningarna i Peking, och visar att stadens luftkvalitet redan på 80-, 90-, och 00-talen på många In January 2013 Beijing was hit with a wave of smog the likes of which have never been recorded before. The incident, known as ”Airpocalypse”, quickly made news across the globe placing focus on the City's immense air quality problem. This paper investigates the extent of and the reasons behind Beijing's air pollution, and goes on to show that the air quality during the 80's, 90's

Efter det Stora språnget framåt svepte en svår hungersnöd över Kina. En längre period av ofördelaktigt väder och vänsterextrem politik gjorde att Henan drabbades extra hårt av svälten. Samtidigt som kannibalism härjade så genomdrev provinskommitténs förste sekreterare Wu Zhipu (吴芝圃) även insamlingen av det då största bidraget till den nationella spannmålsreserven någonsin. Det var Wus nit i att föThe economic policies of the Great Leap Forward led to a nationwide famine in the end of the 1950s. The starvation was especially severe in Henan due to a lengthy spell of unfavorable weather and leftist political policies. The situation was further aggravated by Henan's province committee's first secretary Wu Zhipu (吴芝圃) insisting on making the most ambitious contribution to the national

Lyapunov methods and density functions provide dual characterizations of the solutions of a nonlinear dynamic system. This work exploits the idea of combining both techniques, to yield stability results that are valid for almost all the solutions of the system. Based on the combination of Lyapunov and density functions, analysis methods are proposed for the derivation of almost input-to-state sta

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Lignans derived from Schisandra chinensis have attracted significant attention for their diverse pharmacological activities and clinical potential. This review presents a comprehensive analysis of the pharmacological properties of Schisandra chinensis lignans, including their antioxidant, anti-inflammatory, neuroprotective, hepatoprotective, antibacterial/viral, antidiabetic and anticancer effects

The minimal U(1)B−L extension of the Standard Model (B-L-SM) offers an explanation for neutrino mass generation via a seesaw mechanism; it also offers two new physics states, namely an extra Higgs boson and a new Z′ gauge boson. The emergence of a second Higgs particle as well as a new Z′ gauge boson, both linked to the breaking of a local U(1)B−L symmetry, makes the B-L-SM rather constrained by d