[en] After comparison for drilling construction equipments and technology, the selection of in-situ leaching of uranium drilling construction equipments (drilling, mixer & mud pump, mud circulation filter device (shaker), storage tank) is discussed in the premise of safety and environmental friendly. How to properly use equipments joint construction to optimize the technologies of drilling, well completion, logging, wash well, subsequent treatment, and guarantee drilling construction quality. To play a guiding role in project construction and development. (authors)

[en] Regarding of fragile environment, weak stability of ecosystem and few forest in some region of Mongolia, this paper explores the influence of in-situ leaching of uranium project on local environment and how to take active measures combined with new technology and ideas to protect and recover the environment a swell as dispose of the wastewater. It analyses the impact of traditional construction on the environment and the corresponding solutions from the aspect of prevention in process and later regulation, which will be instructive to the protection and recovery of regional environment. (authors)

[en] The pumping-injection running system of the expanding-test in In-situ leaching of uranium from the previous collect-prepare solution tank buffer system to the none collect-prepare solution tank buffer closed circulation system, analyzes focused on the advantages and disadvantages of both systems. Closed circulation system is environmental protection and energy-saving. The leaching agent of the pilot test was CO₂+O₂ & CO₂ was mainly added into the adsorption tower, which prior to the stock solution. This article focuses on the superiority of closed circulation system, and a detailed analysis of the relevant issues. (authors)

[en] CO₂+O₂ in-situ leaching uranium has been gradually applied in sandstone deposit in our country. This article according to the serious resin hardening problems exist in the hydrometallurgy process of CO₂+O₂ in-situ leaching uranium in Inner Mongolia, through comprehensive analysis, practice, put forward the cleaning method of hardening resin, not only alleviated the resin hardening problem, further optimization the project construction parameters, but also plays a guiding role in resin hardening of Hydrometallurgy process of CO₂+O₂ in-situ leaching uranium in our country. (authors)

[en] The uncertainty principle provides a nontrivial bound to expose the precision for the outcome of the measurement on a pair of incompatible observables in a quantum system. Therefore, it is of essential importance for quantum precision measurement in the area of quantum information processing. Herein, we investigate quantum-memory-assisted entropic uncertainty relation (QMA-EUR) in a two-qubit Heisenberg $\mathit{X}\mathit{Y}\mathit{Z}$ spin chain. Specifically, we observe the dynamics of QMA-EUR in a realistic model there are two correlated sites linked by a thermal entanglement in the spin chain with an inhomogeneous magnetic field. It turns out that the temperature, the external inhomogeneous magnetic field and the field inhomogeneity can lift the uncertainty of the measurement due to the reduction of the thermal entanglement, and explicitly higher temperature, stronger magnetic field or larger inhomogeneity of the field can result in inflation of the uncertainty. Besides, it is found that there exists distinct dynamical behaviors of the uncertainty for ferromagnetism $(\mathit{J}<\mathbf{0})$ and antiferromagnetism $(\mathit{J}>\mathbf{0})$ chains. Moreover, we also verify that the measuring uncertainty is dramatically anti-correlated with the purity of the bipartite spin system, the greater purity can result in the reduction of the measuring uncertainty, vice versa. Therefore, our observations might provide a better understanding of the dynamics of the entropic uncertainty in the Heisenberg spin chain, and thus shed light on quantum precision measurement in the framework of versatile systems, particularly solid states. (letter)

[en] By virtue of the quantum-memory-assisted entropic uncertainty relation (EUR), we analyze entanglement witness via the efficiencies of the estimates proposed by Berta (2010 Nat. Phys. 6 659) and Pati (2012 Phys. Rev. A 86 042105). The results show that, without a structured reservoir, the entanglement regions witnessed by these EUR estimates are only determined by the chosen estimated setup, and have no correlation with the explicit form of the initial state. On the other hand, with the structured reservoirs, the time regions during which the entanglement can be witnessed, and the corresponding entanglement regions closely depend on the choice of the estimated setup, the initial state and the state purity $p$. Concretely, for a pure state with $p=1$, the entanglement can be witnessed by both estimates, while for mixed states with $p=0.78$, it can only be witnessed using the Pati estimate. What is more, we find that the time regions incorporating the Pati estimate become discontinuous for the initial state with $|{\mathrm{\varphi <!--\; ??\; -->}}^{\mathrm{\prime <!--\; ???\; -->}}⟩=(|01⟩+|10⟩)/\sqrt{2}$, and the corresponding entanglement regions remain the same; however the entanglement can only be witnessed once by utilizing the Berta estimate. (letter)