Quantifying Ventilation Effectiveness for Air Quality Control

Zhang, Y.; Wang, X.; Riskowski, G. L.; Christianson, Laura E.

doi:10.13031/2013.4681

Cited by 117 publications

(151 citation statements)

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“…In other words, LaNbO 4 and LaAl 11 O 18 were formed in-situ during sintering process. It's similar to the previous reports from Zhang et al 9) and Brito et al 22) Meanwhile, the amount of plate-like LaAl 11 18 . The results of SEM and EDS analysis were consistent with above XRD analysis in Fig.…”

Section: Resultssupporting

confidence: 90%

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Mechanical properties of La2O3 and Nb2O5 doped Al2O3 ceramics prepared by microwave sintering

Liang

et al. 2014

J. Ceram. Soc. Japan

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Section: Resultssupporting

confidence: 90%

“…9) Secondly, the cracks were deflected and diverge by the in-situ grown plate- O 18 , respectively, when x exceeded 7.5. Simultaneously, the relative density decreased with the increasing x (when x exceeded 7.5).…”

Section: )mentioning

confidence: 99%

Mechanical properties of La2O3 and Nb2O5 doped Al2O3 ceramics prepared by microwave sintering

Liang

et al. 2014

J. Ceram. Soc. Japan

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“…When G is finite, we can rigorously obtain the above results, which is described in Ref. 62. In the following, we will discuss such an approach assuming G g is finite (but G s can be finite or continuous).…”

Section: A Simple Formal Approachmentioning

confidence: 98%

Quantized topological terms in weak-coupling gauge theories with a global symmetry and their connection to symmetry-enriched topological phases

2013

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We study the quantized topological terms in a weak-coupling gauge theory with gauge group Gg and a global symmetry Gs in d space-time dimensions. We show that the quantized topological terms are classified by a pair (G, ν d ), where G is an extension of Gs by Gg and ν d an element in group cohomology H d (G, R/Z). When d = 3 and/or when Gg is finite, the weak-coupling gauge theories with quantized topological terms describe gapped symmetry enriched topological (SET) phases (ie gapped long-range entangled phases with symmetry). Thus, those SET phases are classified bywhere G/Gg = Gs. We also apply our theory to a simple case Gs = Gg = Z2, which leads to 12 different SET phases in 2+1D, where quasiparticles have different patterns of fractional Gs = Z2 quantum numbers and fractional statistics. If the weak-coupling gauge theories are gapless, then the different quantized topological terms may describe different gapless phases of the gauge theories with a symmetry Gs, which may lead to different fractionalizations of Gs quantum numbers and different fractional statistics (if in 2+1D).

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“…When the stress and strain caused under the explosive pressure act on the outer electrode and make it elastically deformed, changes in R B lead to changes in capacitance. (1,4,8,10) The inside and outside plates are placed asymmetrically, namely, the inside plate is on top of the outer plate, and the outside electrode is the circuit common ground. This structure can effectively supress environmental sensing effect.…”

Section: Cps Structure and Principlementioning

confidence: 99%

“…The two types of apparatus used to measure it are the internal copper post (copper ball) piezo gauge and internal electronic piezo gauge (IEPG). (1) The former was invented one century ago. It is directly put in the gun chamber and is capable of obtaining the maximum pressure by detecting only its distortion quantity.…”

Section: Introductionmentioning

confidence: 99%

Measuring Chamber Pressures of Different Caliber Artilleries Using a Capacitive Pressure Sensor

2011

Sensors and Materials

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In order to measure the chamber pressures of different caliber artilleries, a novel capacitive pressure sensor with an elastic pressure-sensitive element is presented in this paper. It uses a circuit cylinder as its stationary anode and the internal electronic piezo gauge shell as its moveable cathode with an electrode distance of 0.5 mm, and constructs a coaxial cylinder capacitor converter. The device principle and structure are given and the device mechanical and thermal characteristics are theoretically simulated using the finite element software ANSYS. Various physical properties were experimentally tested. Results show that the device possesses a very good temperature stability and its capacitance shows an approximately linear relationship with the subjected pressure. It has a sensitivity of 0.00753 Pf/MPa, and a pressure measurement range of 0-600 MPa, and can withstand an instantaneous high temperature of 3,000°C. By using the sensor shell as the device elastic sensitive element, its volume is reduced and its applications are extended; therefore, it can be used to measure the chamber pressures of various different caliber guns. In addition, its lower cost is helpful in promoting wide applications.

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Quantifying Ventilation Effectiveness for Air Quality Control

Cited by 117 publications

References 0 publications

Mechanical properties of La<sub>2</sub>O<sub>3</sub> and Nb<sub>2</sub>O<sub>5</sub> doped Al<sub>2</sub>O<sub>3</sub> ceramics prepared by microwave sintering

Mechanical properties of La<sub>2</sub>O<sub>3</sub> and Nb<sub>2</sub>O<sub>5</sub> doped Al<sub>2</sub>O<sub>3</sub> ceramics prepared by microwave sintering

Quantized topological terms in weak-coupling gauge theories with a global symmetry and their connection to symmetry-enriched topological phases

Measuring Chamber Pressures of Different Caliber Artilleries Using a Capacitive Pressure Sensor

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