181 research outputs found

    Fast scan infrared detection and measuring instrument monthly progress report, oct. 1-31, 1964

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    Optics, scan, detector, and product design of fast scan infrared detection and measuring instrumen

    Design and development of a fast scan infrared detection and measurement instrument

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    Infrared microscope instrument measures and plots the infrared profile of semiconductor chips, transistors and integrated circuits. Infrared analyses yields information on electrical and physical properties, enabling manufacturing improvements in semiconductor performance and reliability. Operational performance and main sections of the instrument are given

    Design and develop fast scan infrared detection and measuring instrument. Phase IV - Experimental study

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    Fast scan infrared detection and measuring instrument to predict failure of power transistor

    Ammonia borane-based targets for new developments in laser-driven proton boron fusion

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    Nuclear fusion reactions involving protons and boron-11 nuclei are sparking increasing interest thanks to advancements in high-intensity, short-pulse laser technology. This type of reaction holds potential for a wide array of applications, from controlled nuclear fusion to radiobiology and cancer therapy. In line with this motivation, solid ammonia borane samples were developed as target material for proton-boron (pB) nuclear fusion. Following synthesis and shaping, these samples were tested for the first time in a laser-plasma pB fusion experiment. An investigation campaign focusing on surface chemical/physical analysis was carried out to characterize such samples in terms of composition of B and H, precursors of the pB fusion nuclear reaction, thus having a key impact on the yield of the generated nuclear products, i.e., alpha particles. A follow-up experiment used an 8 J, 800 fs laser pulse with an intensity of 2 x 10(19) W cm(-2) to irradiate the targets, generating similar to 10(8) alpha particles per steradian. The alpha particle energy range (2-6 MeV) and normalized yield per laser energy of up to (6 x 10(7) J/sr) are comparable with the best previous alpha particle yields found in literature. These results pave the way for a yet unexplored category of pB fusion targets

    A New Way to Link Development to Institutions, Policies and Geography

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    The paper aims to examine the role of institutions relative to economic policy and geography in explaining the differential level of development across countries over time. To that end, it attempts to construct a Development Quality Index (DQI) and an Institutional Quality Index (IQI) by using multivariate statistical method of principal components. It shows that (i) higher level of IQI along with economic policy and geography factors lead to a positive improvement in the level of DQI; and (ii) results remain robust for IQI and relatively robust for economic policy and geography even when it is compared across cross-section and panel data estimation for a set of 102 countries over 1980 to 2004. The results strongly indicate that institutions matter in the context of specific economic policy mixes and geography related factors illustrated by disease burden, etc. It demonstrates that relative influence of institutions varies across stages of development

    Broglio di Trebisacce (CS)

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    Scavo archeologico in convenzione con la Soprintendenza per i beni archeologici della Calabria; direzione scientifica in continuità dal 1990. Scavo stratigrafico di un insediamento protostorico con acropoli fortificata, di lunga durata (Bronzo medio - primo Ferro). Il sito, tra i meglio noti dell'Italia meridionale, è coinvolto nei traffici con l'Egeo e il Mediterraneo orientale. Progetto di studio multidisciplinare, in collaborazione con diversi enti e istituti di ricerca nazionali ed internazionali

    Intorno alla cronologia della prima età del ferro italiana, da H. Müller-Karpe a Chr. Pare.

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    Discussione delle sequenze di cronologia relativa ed assouta proposte per la prima età del ferro italiana, dall'opera di H. Müller-Karpe (1959) ad oggi. L'analisi delle datazioni assolute disponibili permette di avanzare una proposta cronologica complessiva
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