Search Results - "Liljestrand, L"

Separation of the Energy Absorption and Overvoltage Protection in Solid-State Breakers by the Use of Parallel Varistors by Magnusson, Jesper, Saers, Robert, Liljestrand, Lars, Engdahl, Goran

“…Hybrid and solid-state breakers offer new possibilities in the power grid by enabling faster switching, and by simplifying dc breaking. However, they consists…”
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The triple oxygen isotope composition of Precambrian chert by Liljestrand, Frasier L., Knoll, Andrew H., Tosca, Nicholas J., Cohen, Phoebe A., Macdonald, Francis A., Peng, Yongbo, Johnston, David T.

“…•The O-isotope composition of minerals provides information about the minerals life-history.•For chert, there is a significant contribution from alteration by…”
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Building Resilience Among Nursing Students by Liljestrand, Rebecca L, Chandler, Genevieve E, Devine, Christine A, Pérez, Jennifer Rivera, Mchenga, Nellipher Lewis, Kalmakis, Karen A

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Isotopically anomalous organic carbon in the aftermath of the Marinoan snowball Earth by Liljestrand, Frasier L., Laakso, Thomas A., Macdonald, Francis A., Schrag, Daniel P., Johnston, David T.

“…Throughout most of the sedimentary record, the marine carbon cycle is interpreted as being in isotopic steady state. This is most commonly inferred via…”
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Plant species, not climate, controls aboveground biomass O2:CO2 exchange ratios in deciduous and coniferous ecosystems by Gallagher, Morgan E., Liljestrand, Frasier L., Hockaday, William C., Masiello, Caroline A.

“…The oxidative ratio (OR) is the O2:CO2 ratio associated with photosynthesis, respiration, and other ecosystem gas exchange processes and can be reported on the…”
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Dependence of the chopping current level of a vacuum interrupter on parallel capacitance by Lindell, E., Liljestrand, L., Dullni, E.

“…The chopping current level of a vacuum interrupter is the mean amplitude of current before the natural current zero at which the arc extinguishes. The…”
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Calibrating the triple oxygen isotope signature of cultured diatoms by Liljestrand, Frasier L., Hania, Anxhela, Giordano, Mario, Johnston, David T.

“…The 18O/16O of precipitated silica in natural environments is posited to record the temperature of the ambient environment. Measurements of 17O/16O in silica…”
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Wind Energy Powers-That-Be Successor Generation in Globalization by Gertmar, L., Liljestrand, L., Lendenmann, H.

“…After a historic introduction, today's wind power technology is reviewed on a systems level, with some details, and with some brave suggestions for wind…”
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Bond Strengths of Inner and Outer Leads on TAB Devices by Liljestrand, L.-G

“…Chips with 43 leads mounted on three layer tapes were outer lead bonded to different substrates. The substrate materials were ceramics with Cu thick film,…”
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Accelerated Thermal Fatigue Cycling of Surface Mounted PWB Assemblies in Telecom Equipment by Liljestrand, L.-G., Andersson, L.-O.

“…Telecom equipment is subject to thermal cycles caused by both variations in temperature between day and night and variations in the telephone traffic. To…”
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The Optimal Choice of High Pin Count ASIC Packages by Gustafsson, K, Andersson, U, Ek, S, Liljestrand, L.-G

“…The choice of high pin count ASIC packages has a major impact on the total cost and performance of the whole packaging system. Six different types of ASIC…”
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Multiple re-strikes phenomenon when using vacuum circuit breakers to start refiner motors by Eichenberg, J.P., Hennenfent, H., Liljestrand, L.

“…15 kV class vacuum circuit breakers have become the most popular method of starting large chip refiner synchronous motors. Multiple re-strikes, can occur in…”
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The Application of Silica Δ'17 O and δ18O Towards Paleo-Environmental Reconstructions by Liljestrand, Frasier L

“…The oxygen isotope composition of silica provides a valuable record of the temperature at which it precipitated and the isotopic composition of the fluid with…”
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Plant species, not climate, controls aboveground biomass O 2 :CO 2 exchange ratios in deciduous and coniferous ecosystems by Gallagher, Morgan E., Liljestrand, Frasier L., Hockaday, William C., Masiello, Caroline A.

“…The oxidative ratio (OR) is the O 2 :CO 2 ratio associated with photosynthesis, respiration, and other ecosystem gas exchange processes and can be reported on…”
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Wear Resistance of Electroplated Nickel-Hardened Gold by Liljestrand, L.-G., Sjogren, L., Revay, L., Asthner, B.

“…Wear resistance and hardness of nickel-hardened gold electroplated at current densities between 1 and 16 A/dm 2 and containing between 0.2 and 2.5 wt% nickel…”
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All-Electric LNG Liquefaction Plants: Technical Challenges and Possible Concept Solutions by Sannino, A., Liljestrand, L., Rothman, B., Nestli, T., Kjall-Ohlsson, M., Holsten, P.-E.

“…This paper discusses technical challenges posed by large all-electric liquefaction plants, in which the plant refrigeration compressors are driven by electric…”
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A Study of Some Factors Influencing the Wear Resistance of Lubricated Gold Contacts by Liljestrand, L.-G.

“…Friction and wear tests have been performed on goldplated (2-3 \Omega m thick) contacts lubricated with three different lubricants: polyphenyl…”
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Experimental study of the current commutation in hybrid DC-breakers by Magnusson, Jesper, Bissai, Ara, Engdahl, Goran, Martinez, Juan A., Liljestrand, Lars

“…To interrupt a current in a DC system where the feeding voltage is higher than a few kilovolt is a challenge. One popular solution today is the hybrid…”
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Repetitive fast voltage stresses-causes and effects by Bengtsson, T., Dijkhuizen, F., Ming, L., Sahlen, F., Liljestrand, L., Bormann, D., Papazyan, R., Dahlgren, M.

“…In this article, we have seen how high-frequency system resonances, triggered by power electronic devices, may enhance both electrical and thermal stress on an…”
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Vacuum circuit breaker and transformer interaction in a cable system by Liljestrand, L, Lindell, E, Bormann, D, Roy, C, Dullni, E

“…Vacuum circuit breakers can cause repetitive transient overvoltages with steep fronts in some cases, depending on the combination of the system configurations…”
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