Abstract: An earthquake alarm device mainly includes a housing, vertical vibration detecting system, a horizontal vibration system, a battery and an alarm set. There is a spring with a specific spring coefficient k and the spring is connected to a weight. Once the earthquake happens, it will activate one of both of the vertical and the horizontal vibration detecting system so that a warning voice or voices are created. It can be activated by other magnetic or electrical method. In addition, the sensitivity of the vertical and/or the horizontal vibration detecting can be adjusted. After the earthquake is gone, it will return to its original state automatically. It will not be affected by the location. So, it is very convenient and precise in use.

Abstract: An earthquake alarm device mainly includes a housing, vertical vibration detecting system, a horizontal vibration system, a battery and an alarm set. There is a spring with a specific spring coefficient k and the spring is connected to a weight. Once the earthquake happens, it will activate one of both of the vertical and the horizontal vibration detecting system so that a warning voice or voices are created. It can be activated by other magnetic or electrical method. In addition, the sensitivity of the vertical and/or the horizontal vibration detecting can be adjusted. After the earthquake is gone, it will return to its original state automatically. It will not be affected by the location. So, it is very convenient and precise in use.

Abstract: The present invention is directed to the use of certain ethoxylated compounds to increase the yield of green liquor semi-chemical pulping processes, the compound have the following structures: ##STR1##

Abstract: A process for making paper and linerboard, employing certain nonionic surface active agents to increase the yield of kraft pulping. The surface active agents having the structural formula ##STR1## where n is an integer from 8 to 12, and x is a positive integer from 1 to about 100, the surface active agent being present in the cooking liquor in an amount effective to increase the yield of pulp.

Abstract: The present invention is directed to the use of certain ethoxylated compounds to increase the yield of chemical pulping processes, the compound have the following structures: ##STR1## These ethoxylated compounds have molecular weights of from about 500 to about 30,000 the (CH.sub.2 CH.sub.2 O) comprising from about 20 to 80 percent of the compound; and a, b, and c are each at least 1. The compounds are surface active agents which are added to the cooking liquor. The wood chips are cooked from about one-half and ten hours at a temperature of from about 200 and 500 degrees Fahrenhelt in a liquor including sodium hydroxide, sodium sulfide, and the surface active agent. The wood plug would have a reject level of at least 5% when the chips are cooked in the absence of the surface active agent. The process provides a simultaneous reduction in the level of rejects and an increased yield of pulp.