Abstract: The present disclosure proposes method and apparatus for query-based table visualization. A query may be obtained. At least one search result for the query may be obtained. A table may be extracted from the at least one search result. At least one chart corresponding to the table may be generated based on the query and the table.

Abstract: A low-pressure casting unit capable of alternately using crucible type heat preservation furnaces, consisting of a low-pressure casting machine, a crucible type heat preservation furnace I, a crucible type heat preservation furnace II, a trolley transfer system, a heat preservation furnace lifting system, a control system, and a transversely moving guide rail, the heat preservation furnace lifting system being arranged at a bottom of the low-pressure casting machine, the heat preservation furnace lifting system lifting the crucible type heat preservation furnace I or the crucible type heat preservation furnace II up and down in the low-pressure casting machine, one side of the low-pressure casting machine being provided with a trolley transfer system in front and the trolley transfer system moving on the transversely moving guide rail.

Abstract: An embedded optical fiber radiation dose detector, includes: a first optical fiber probe, wherein a first end of the first optical fiber probe is connected to a first light intensity detector, and a second end of the first optical fiber probe is a detecting end, wherein a first fluorescent material is embedded in a terminal of the detecting end of the first optical fiber probe. Advantages are as follows: the optical fiber probes of the present invention have an embedded structure, wherein an optical fiber probe, whose core is hollow inside, is produced with a micro processing technology, and the fluorescent material is embedded therein, so as to significantly improve an efficiency of coupling radiation-generated fluorescent signals into the cores of the optical fibers, and significantly decreases a size of an optical fiber sensor.

Abstract: An embedded optical fiber radiation dose detector, includes: a first optical fiber probe, wherein a first end of the first optical fiber probe is connected to a first light intensity detector, and a second end of the first optical fiber probe is a detecting end, wherein a first fluorescent material is embedded in a terminal of the detecting end of the first optical fiber probe. Advantages are as follows: the optical fiber probes of the present invention have an embedded structure, wherein an optical fiber probe, whose core is hollow inside, is produced with a micro processing technology, and the fluorescent material is embedded therein, so as to significantly improve an efficiency of coupling radiation-generated fluorescent signals into the cores of the optical fibers, and significantly decreases a size of an optical fiber sensor.

Abstract: This invention relates to a hydrogen storage alloy electrode prepared from an active material comprising a magnesium based alloy and a Ni, P based metallic compound. The magnesium based alloy is coated while in powder form with a Ni, P based metallic compound and activated by heat. The hydrogen storage alloy electrode produced from this active material is able to absorb and desorb hydrogen even under normal temperature and pressure. The alkali battery assembled with the electrode prepared from the activated alloy material has high energy density and charge-discharge capacity and can be used in large scale electrical equipment, especially electrically operated vehicles.

Abstract: This invention relates to an electrode composed of an active material. This electrode comprises a composition of a hydrogen storage alloy powder possessed of relatively high electrochemical capacity with a formula of MmNi5-x-y-z AxByCz and a hydrogen storage alloy powder possessed of catalytic activity with a formula of D2-uE1-vFuGv wherein Mm is the mischmetal, A=Co, Cr, V; B=Mn, Sn, Be; C=Al, Ca, Mg, Zr, Nb; D=Mg, Al; E=Cu, Zn; F=Ca, Be; G=Sn, Bi; 0.ltoreq.x.ltoreq.0.5, O.ltoreq.y.ltoreq.l.5, 0.ltoreq.z.ltoreq.0.5, 0.ltoreq.u.ltoreq.1, 0.ltoreq.v.ltoreq.0.5. The internal pressure of the alkali battery assembled with this electrode can be effectively lowered, the capacity and the cycle life of the sealed battery are improved, the activation period of the battery is shortened to 3-5 times, thus the crucial technical problem about industrial mass production of this kind of alkali batteries is surmounted.

Abstract: This invention relates to an active material of hydrogen storage alloy electrode. The composition of the active material has a formula: Mm Ni.sub.5-x-y-z-u A.sub.x B.sub.y C.sub.z D.sub.u ; wherein Mm is mischmetal; A=Mn, Sn, or V; B=Cr, Co, Ti, Nb, Zr, or Si; C=Al, Mg, or Ca; D=Li, Na, or K; 0.ltoreq..times..ltoreq.0.95; 0.ltoreq. y.ltoreq. 1; 0.ltoreq. z.ltoreq. 0.7; and 0.1.ltoreq. u.ltoreq. 0.9. Alternatively, the composition may be of the formula: Ti.sub.2 Ni.sub.1-u Du; wherein D=Li, Na, or K; and 0.04.ltoreq. u.ltoreq. 0.9. This active material can relieve the alkali metal ions M.sup.+ continuously in charge-discharge process of the alkali batteries, increase the concentration of MOH within the battery, take effect in protecting the cathode and the anode validly, and improve the cycle life and the discharge capacity of the battery.