The GEM-based neutron detector has flourished in the past decade. However almost all detectors work flow-gas mode, and long-term performances of may be unstable due to dynamic changes atmospheric pressure ambient temperature. In this paper, a sealed ceramic was developed at China Spallation Neutron Source (CSNS) its sensitive area 100 mm * mm. characterizations were presented discussed, which i...

Laboratory experiments were conducted by applying 1,2-dibromo-3-chloropropane (DBCP) to sealed vials of soil infested with Meloidogyne javanica. A minimum initial concentration of 0.25 mug of DBCP/g of oven-dry soil killed all nematodes within 35 days. A concentration of 1.0 mug/g killed all nematodes within 28 days. The rate of degradation of this chemical was determined by treatment of steame...

Small hive beetles (Aethina tumida Murray) can lay eggs cryptically through the cappings of sealed bee brood cells. However, honey bees (Apis mellifera L.) can detect this activity and respond by removing cell cappings and contents (hygienic behaviour). We were interested in identifying conditions that regulate this syndrome of stimulus and response. Beetle oviposition rate (proportion of cells...

In this paper, we study mergers in sealed-bid asymmetric auctions. By asymmetric, we mean that bidders are drawing values out of extreme value distributions with di erent means. We develop an algorithm to nd numerical solutions of the system of di erential equations for the inverse bidding functions at equilibrium. The equilibrium inverse bidding functions are found to have a singularity, a cri...

OBJECTIVE The microbial composition was investigated in root canals of dogs' teeth with periapical lesions induced by 2 different methods: open versus sealed canals. STUDY DESIGN Teeth from Group I (n = 16) were left open for a week, then sealed with composite resin for 120 days. The teeth from Group II (n = 16) were left open for the same period. Microbiological samples from the root canals ...