Vomiting and wasting disease associated with hemagglutinating encephalomyelitis viruses infection in piglets in jilin, china

One coronavirus strain was isolated from brain tissues of ten piglets with evident clinical manifestations of vomiting, diarrhea and dyskinesia in Jilin province in China. Antigenic and genomic characterizations of the virus (isolate PHEV-JLsp09) were based on multiplex PCR and negative staining electron microscopy and sequence analysis of the Hemagglutinin-esterase (HE) gene. These piglets were diagnosed with Porcine hemagglutinating encephalomyelitis virus (PHEV)

Application of comprehensive geophysics in uranium exploration in the Hetaoba area of Duolun County, Inner Mongolia

Objective The Hetaoba area in Inner Mongolia has superior uranium metallogenic conditions.Grea tore-prospecting results have been achieved in the eastern part of the study area.However, breakthrough has not been made in the western area. Uranium mineralization is significantly controlled by faults and fractured zones. To identify the distributions of fault framework, structural fracture and alteration zones, and further to infer the favorable metallogenesis areas, geophysical data are provided to explore the uranium metallogenic potential. Methods Through the comprehensive applications of three geophysical methods, including audiomagnetotelluric surveys, soil radon measurements, and ground high-precision magnetic measurements, soil radon anomalies are delineated in the study area. The northwest fault F13 shows a northeast- and northwest-trending with a Chinese word "Tian" grid shape, while the southeast fault F12 presents a northeast-trending grid shape. The faults of F13 and F12 present nearly north-south and northwest trendings in the pinched zones.There are six structural alterated and fractured zones to be inferred. Results Based on the characteristics of uranium mineralization, it is inferred that the structural alteration and fracture zones of S1, S2, S3 and S4 are located at the intersection and pinched zone of faults, with a large scale. Multiple soil radon anomalies are distributed with an anomaly amplitude up to 35 000 Bq/m3, which are the favorable areas for metallogenesis. Conclusion After verification of the drilling results, the structural alteration, fracture zones and thick uranium ore bodies are discovered in the deep of borehole ZKH24. Many industrial uranium ore holes are discovered in the S2 structural alteration zone. Borehole ZKH7-1 has good ore findings, confirming the origin place of the uranium ore. The study indicates that the comprehensive application of the three geophysical methods has effective results in uranium ore exploration and can be promoted to uranium ore prospecting

Reinforcement Learning Based Power Control for Reliable Wireless Transmission

In this paper, we investigate a sequential power allocation problem over fast varying channels, aiming to minimize the expected sum power while guaranteeing the transmission success probability. In particular, a reinforcement learning framework is constructed with appropriate reward design so that the optimal policy maximizes the Lagrangian of the primal problem, where the maximizer of the Lagrangian is shown to have several good properties. For the model-based case, a fast converging algorithm is proposed to find the optimal Lagrange multiplier and thus the corresponding optimal policy. For the model-free case, we develop a three-stage strategy, composed in order of online sampling, offline learning, and online operation, where a backward Q-learning with full exploitation of sampled channel realizations is designed to accelerate the learning process. According to our simulation, the proposed reinforcement learning framework can solve the primal optimization problem from the dual perspective. Moreover, the model-free strategy achieves a performance close to that of the optimal model-based algorithm.Comment: This paper has been submitted to IEEE Internet of Things Journal (14 pages, 9 figures