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(31) The sterilization efficiency of two quaternary phosphonium salts, BHP 1 and BHP 2, was evaluated by Maximum Probable Number.

(32) This discovery provides important data and evidence for establishing the climatic stratigraphic sequence and division and correlation of the Quaternary glacial period on the Qinghai-Tibet plateau.

(33) The bottom gravel of Quaternary system in Huainan and Huaibei mine districts of Anhui Province has been studied for the upper limit of coal mining.

(34) The Luannigou ore field riches with alluvial gold of Quaternary Period and is the favorable target for rock gold.

(35) The cationic quaternary ammonium salt bituminous emulsifier was synthesized with the method of a certain sort of hydroxybenzene, epichlorohydrin, and triethylamine mixed together.

(36) The paper gives an introduction of Li Siguang's academic thought and achievements in three aspects, on stratigraphic paleontology, Quaternary glaciology and geomechanics.

(37) The new polymer quaternary ammonium salt was synthesized from epoxy phenolic resin via ring-opening reaction with aqueous solution of triethylamine hydrochloride.

(38) What happened in the environmental evolution in the eastern Tibet Plateau shows that climate change, which reflected by quaternary moraine series, has long cycle and great breadth.

(39) The principle of the boundary theory of phase diagrams is introduced and an experimental method of determining the isopleth section of phase diagrams of quaternary alloy system is described.

(40) The quaternary ammonium salt polymer PDA was applied on dye fixation process for pigskin suede leather on the basis of dye fixation principle of quaternary ammonium salts.

(41) The primary cause is the alternation of cold-arid climate and warm-moist climate in Quaternary period and the induced change of soil-formation processes.

(42) The equilibrium phase diagram and the density-composition diagram of the quaternary system were plotted using experimental data.

(43) This quaternary system is a simple eutectic type, and no double salt or solid solution was found.

(44) Reportedly, the site is mainly underlain by alluvial deposits of Quaternary Age comprising sand and clay.

(45) In this work, anolyte of nickel was examined in order to check the effect of separation of cobalt from nickel using quaternary amine impreg- nated resins.

(46) The Mesozoic volcanic rock is developed and in sea section, the sediment of Quaternary period is huge-thick, with complicated types and gravel commonly.

(47) Finally, it is proved that under broadband noise the PSR system could transmit quaternary baseband PAM signal effectively.

(48) Quaternary loose and thicker deposits are widespread in Beihaitown, forming a fan-shaped peneplain in geomorphology.

(49) The upper structure layer is composed of the Cretaceous to the Quaternary, which shows a large slope dipping northwestward.

(49) Sentencedict.com is a sentence dictionary, on which you can find nice sentences for a large number of words.

(50) Industries based on brainwork or knowledge are called the quaternary industry.

(51) Based on TTL technique, the designed quaternary Schmitt circuit is simulated with PSPICE and is proved to have the ideal Schmitt function.

(52) The paper reported these fossil strata for research of quaternary system at the region.

(53) The application of smectite which is modified by quaternary ammonium compound cation surfactant, hexadecyltrimethylammonium (HDTMA) to industrial wastewater treatment has been studied.

(54) In the early Quaternary, medium, Populus gradually evolved into the most important building in desert riparian forest species.

(55) Design Syntax-directed translation of the expression generated quaternary type of algorithm, write code and debug on a machine to run through.

(56) In this paper, by drawing up the isopach maps of series in the Quaternary system, analysed the evalution of the tectogenesis of each epoch in the Quaternary period of the Dongting Basin.

(57) The groundwater in Qian an County includes the pore phreatic water, the pore confined water of the Quaternary period and up Tertiary cranny pore confined water.

(58) The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.

(59) The course change of Xijiang River and the formation of Lingyang Gorge are related to the neo-tectonic movements since Quaternary Period.

(60) The measurement of natural thermoluminescence of Quaternary sediment is a new method for oil and gas prospecting.