724 research outputs found
Pass no Rude Remarks
No full textA warning against making rude remarks about others.https://egrove.olemiss.edu/kgbsides_uk/2509/thumbnail.jp
Theoretical and Experimental Study of LiBH4-LiCl Solid Solution
No full textAnion substitution is at present one of the pathways to destabilize metal borohydrides for solid state hydrogen storage. In this work, a solid solution of LiBH4 and LiCl is studied by density functional theory (DFT) calculations, thermodynamic modeling, X-ray diffraction, and infrared spectroscopy. It is shown that Cl substitution has minor effects on thermodynamic stability of either the orthorhombic or the hexagonal phase of LiBH4. The transformation into the orthorhombic phase in LiBH4 shortly after annealing with LiCl is for the first time followed by infrared measurements. Our findings are in a good agreement with an experimental study of the LiBH4-LiCl solid solution structure and dynamics. This demonstrates the validity of the adopted combined theoretical (DFT calculations) and experimental (vibrational spectroscopy) approach, to investigate the solid solution formation of complex hydrides
Halide substitution in Ca(BH4)(2)
No full textHalide substitution in Ca(BH4)2 has been investigated in ball milled mixtures of Ca(BH4)2 and CaX2 (X 1⁄4 F, Cl, Br) with different molar ratios. In situ synchrotron radiation powder X-ray diffraction measurements of Ca(BH4)2 + CaCl2 with 1 : 0.5, 1 : 1 and 1 : 2 molar ratios reveal that no substitution of Cl for BH4 occurs from the ball milling process. However, substitution readily occurs after the transitions from a- to b-Ca(BH4)2 and from orthorhombic to tetragonal CaCl2 upon heating above 250 C, which is evident from both contraction of the unit cell and changes in the relative Bragg peak intensities, in agreement with theoretical calculations. Rietveld analyses of the obtained b-Ca((BH4)1xClx)2 solid solutions indicate compositions from x 1⁄4 0 to 0.6, depending on the amount of CaCl2 in the parent mixtures. b-Ca((BH4)0.5Cl0.5)2 was investigated by differential scanning calorimetry and has a slightly higher decomposition temperature compared to pure Ca(BH4)2. No substitution with CaF2 or CaBr2 is observed
Thermodynamic Tuning of Calcium Hydride by Fluorine Substitution
No full textFluorine substitution in CaH2 has been studied by means of experimental and theoretical
methods. Samples with various compositions have been prepared by ball milling. In situ X-ray
diffraction analysis has been carried out as a function of temperature by synchrotron radiation
experiments. An increase of mixing has been observed during heating, suggesting that mixing is
thermodynamically favoured but it is kinetically hindered at low temperatures. Ab initio DFT
calculations have been performed to estimate the thermodynamic mixing properties of both
orthorhombic and cubic solid solutions. On the basis of ab initio results and literature
information, a thermodynamic assessment within the CALPHAD framework has been performed
and the pseudo binary CaH2-CaF2 phase diagram has been calculated. The formation of
orthorhombic and cubic terminal solid solutions in the CaH2-CaF2 system is predicted, in good
agreement with experimental findings
The effects of <i>Amauroderma rude</i> extracts on breast cancer cell survival and apoptosis.
No full text<p>(a) The breast cancer cell line MDA-MB231 were cultured in normal medium treated with different concentrations of <i>Amauroderma rude</i> extract as indicated for 24 hours. Even at low concentrations, <i>Amauroderma rude</i> extract could effectively induce tumor cell death. Cell counting indicated a significant effect of <i>Amauroderma rude</i> at the concentration of 50 µg/ml (left). n = 3, **p<0.01. Typical photos of cell death are shown (right). (b) MDA-MB231 cells were cultured in normal medium treated with <i>Amauroderma rude</i> extract (400 µg/ml) for different periods of time. Extensive cell death was detected after eight hours of treatment. (c) MDA-MB231 cells were cultured in normal medium treated with different concentrations of <i>Amauroderma rude</i> extract as indicated for or 48 hours, followed by apoptosis assay. Treatment with <i>Amauroderma rude</i> induced apoptosis.</p
RG 9015-034-001 Glenn Rude Photograph Collection, Action Photo Collection
No full textConstruction Work; Workers; Electric Line; Wate
RG 9015-034-001 Glenn Rude Photograph Collection, Action Photo Collection
No full textDelaware River Electric Transmission Line
RG 9015-034-001 Glenn Rude Photograph Collection, Action Photo Collection
No full textDelaware River Electric Transmission Line
RG 9015-034-001 Glenn Rude Photograph Collection, Action Photo Collection
No full textConstruction Work; Workers; Electric Line; Wate
Aes rude s rta Ljubljana
No full textThe author gives a brief description of the bronze pieces known as aes rude, proto-currency of the Roman Empire. Considering that trade functioned throughout the Adriatic circle, some of this material was found on Croatian territory, more precisely in Ljubač Bay. The Ljubač area is about 18 km north of Zadar. Today’s village is right beside the sea stretching around Ljubač Bay. The area has been inhabited since prehistory. The first settlement was on Ljubljana Point, about 4500 m from the main road leading to Ražanac. Prehistoric Illyrian necropolises (tumuli) are known, explored by Professor Dr Šime Batović. Although the area has not been sufficiently researched, we know that the grassy point had at least two settlements. Since the point rises towards its end and finishes in a hill of about 80 m, it is here that the main settlement developed and lasted until the Ottoman conquest. There have been many chance finds in this area when the soil was washed away after heavy rainfall.Autor ukratko objašnjava podrijetlo brončanih komada poznatih pod nazivom aes rude kao predmonetarni novac Rimskoga Carstva. S obzirom na trgovinu širom jadranskoga kruga, dio se tog materijala zadržao i na našem području, točnije u Ljubačkom zaljevu.
Ljubačko područje nalazi se oko osamnaest kilometara sjeverno od Zadra. Današnje mjesto nalazi se tik uz more, tvoreći naselje oko Ljubačkoga zaljeva. Cijeli je kraj naseljen od prapovijesti. Prva naseobina nalazila se na Ljubačkom rtu odnosno rtu Ljubljana, koji se od glavne ceste prema Ražancu pruža oko 4500 metara u more. Tamo su poznate prapovijesne nekropole (tumuli) iz ilirskoga doba, koje je istraživao prof. dr. sc. Šime Batović. Iako to nije dovoljno istraženo područje, vidljivo je da su na rtu, koji je bogat travom, egzistirale barem dvije naseobine. Rt mijenja visinu prema svojem kraju te završava na koti od oko osamdeset metara pa se upravo na tom mjestu nalazila glavna naseobina, koja je trajala sve do turskih osvajanja. Brojni su slučajni nalazi s toga područja zbog ispiranja terena nakon obilnih kiša
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