Positions are available for postdoctoral scientists to conduct novel research with the overall objective of developing practical applications of microbiology, immunology, and epidemiology for diagnosis and prevention of infectious diseases. Fellows will perform research in residence at the National Center for Infectious Diseases, which is headquartered at the Centers for Disease Control and Prevention in Atlanta, Georgia. Visit http://www.asm.org/Education/index.asp?bid=15497

Surface characterization and catalysis can significantly benefit from the application of generalized two-dimensional (2D) correlation analysis. This two-dimensional approach allows a better resolution of overlapping peaks, can reveal new features not readily observable in the raw spectra, gives clear evidence for spectral intensities that change as an effect of a perturbation applied to the system, and allows the establishment of time sequences for

Highly ordered Ni-MCM-41 samples with nearly atomically dispersed nickel ions were prepared reproducibly and characterized. Similar to the Co-MCM-41 samples, the pore diameter and porosity can be precisely controlled by changing the synthesis surfactant chain length. Nickel was incorporated by isomorphous substitution of silicon in the MCM-41 silica framework, which makes the Ni-MCM-41 a physically stable catalyst in harsh reaction conditions such

Doua cercetatoare din Romania au primit, in ultimii doi ani, bursa "For Women in Science". Premiul oferit de UNESCO va fi conferit si in acest an. In fiecare an, un juriu format din savanti de renume premiaza cinci cercetatoare eminente, fiecare dintre ele fiind reprezentanta unui continent. Diploma de excelenta este insotita de un premiu in valoare de 100.000 de dolari. Premiile initiate de UNESCO, "For Women in Science", fac

Ad Astra, asociatie a cercetatorilor romani, considera lansarea Registrului National al Expertilor in invatamantul superior si cercetare (RNE) ca fiind un pas important spre normalitate. Sunt binecunoscute disfunctionalitatile majore care au dominat in ultimii ani procesul de evaluare a proiectelor supuse spre finantare in cadrul programelor de cercetare ale Ministerului Educatiei si Cercetarii. Prin introducerea unor criterii obiective de eligibilitate

The influence of different ratios of colloidal (Cab-O-Sil, HiSil-915 and sodium silicate) and soluble (tetramethylammonium silicate) silica on the physicochemical properties (surface area, porosity, degree of structural order, thermal stability, density of free silanol group) of MCM-41 has been investigated. MCM-41 materials synthesized hydrothermally have been characterized by XRD, N2 physisorption, and IR spectroscopy. The results show that colloidal

1. Reprezentantii Ministerului Educatiei si Cercetarii - In "Evenimentul Zilei" "...Reprezentantii Ministerului Educatiei si Cercetarii (MEC) si cei ai Consiliului National al Cercetarii Stiintifice in Invatamintul Superior (CNCSIS) spun ca "orice evaluare este bine venita". "Noi am contribuit indirect la acest studiu, prin furnizarea datelor. Cunosc metodologia Shanghai, consacrata international. Nu ma pot pronunta

Studiul face o evaluare a universităţilor din România în scopul clasificării/ierarhizării acestora în anul 2004, prin prisma sistemului international de clasificare/ierarhizare a universităţilor Shanghai "Academic Ranking of World Universities". Rezultatele arată că vizibilitatea şi impactul internaţional ale universităţilor româneşti sunt date doar de câţiva actori (universităţi) de prestigiu, restul universităţilor având

Both Ni- and Co-MCM-41 may be used for the synthesis of single-wall carbon nanotubes (SWNT). We present a comparative investigation that demonstrates that smaller diameter SWNT with a narrower distribution of diameters are produced using Co-MCM-41. Temperature-programmed reduction and x-ray absorption spectroscopy were used to measure the reducibility and metal cluster growth of Ni- and Co-MCM-41 in He, H2 and under CO disproportionation reaction.

Web site-ul Ad Astra este intretinut prin eforturile membrilor si sponsorilor Ad Astra si este deschis gratuit publicului larg pentru diseminarea de informatii de interes general privitoare la invatamint si cercetare. Ad Astra isi rezerva dreptul de a selecta materialele prezentate pe site-ul nostru. Cele care nu indeplinesc standardele noastre privitoare la calitatea si interesul pentru comunitatea de cercetare, vor fi sterse fara nici o explicatie