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The construction and management of military academies key laboratory has its own characteristics and laws. Effectively construction and management of the key laboratory relying on military academy is a challenging task. According to the construction and management process of the key laboratory of military underground architectural engineering， the measures to strengthen military academy laboratory construction and management are discussed systematically and deeply from deepening the reform of experimental teaching，the serving ability for troops and society， the scientific research and technology innovation，the construction of laboratory team and the level of open operation and management. The practice shows that tlie military key laboratory is playing a key role in teaching，scientific research and serving for troops and society，and makes positive contribution to the subject development and personnel training. [ABSTRACT FROM AUTHOR]

Efficient separation of high-sulfur lead-zinc ore has always been a technical problem in mineral processing research. All the test samples came to a high-sulfur lead-zinc ore dressing plant in Guizhou,with Pb grade of 2.68%, Zn grade of 8.80%, and S grade of 17.46% . S mainly occurs in pyrite, with complex dissemination relationship and low liberation degree. Based on the p rinciple flowsheet of "lead selective flotation followed by zinc flotation", the optimal grinding fineness of lead roughing was determined by single factor test as 85 % passing 0.074 mm,and the collector of lead roughing was butyl xanthate +ethyl thiocarbamate. Optimization of reagent dosage for lead roughing and zinc roughing by orthogonal design, the results showed that the optimum reagent system of lead roughing was lime 2000 g/t,zinc sulfate 1200g/t,butyl xanthate+ ethyl thiocarbamate 35 g/ t+35 g/t, pine oil 30 g/t. The optimum reagent system of zinc roughing was lime 800 g/t, X-45 500 g/t,Butyl xanthate 120g/t, pine oil 20 g/t. Under t he best reagent regime, closed-circuit t est was carried out by using "one roughing-two scavenging-three cleanings for lead and one roughing two scavenging two cleanings for zinc" beneficiation process. Finally,lead concentrate with Pb grade of 58. 42% and Pb recovery of 80.92% was obtained, and zinc concentrate with Zn grade of 51.61% and Zn recovery of 92.60% was obtained. [ABSTRACT FROM AUTHOR]

The diagnostic value of multi-parameter magnetic resonance imaging ( MRI ) in the differential diagnosis of cystitis glandularis and bladder cancer and the pathological staging of bladder cancer was analyzed. Fifty cases of glandular cystitis and 50 cases of bladder cancer admitted to our hospital from February 2019 to February 2023 were studied, all of which were examined by MRI multi-parameter [high-resolution T2-weighted images (HR T2WI), diffusion-weighted imaging (DWI), dynamic strong magnetic resonance imaging (DCE-MRI)]. The intensity of HR T2WI, DWI and DCE-MRI signals in glandular cystitis and bladder cancer were analyzed. Taking pathological examination results as the diagnostic gold standard, the detection rate of correct pathological staging of single MRI parameter diagnosis and combined diagnosis of bladder cancer was analyzed, and Kappa coefficient was used to analyze the consistency of pathological results of single MRI parameter diagnosis and combined diagnosis of bladder cancer, and the diagnostic efficacy of combined MRI parameter diagnosis in the pathological staging of bladder cancer was calculated. Compared with glandular cystitis, high intensity of HR T2WI, DWI and DCE-MRI in bladder cancer was higher (P<0.05). Compared with HR T2WI and DCE-MRI, the correct stage diagnosis rate of T2WI+DWI+DCE-MRI was higher (P<0.05). T2WI + DWI + DCE-MRI diagnosis of bladder cancer staging and pathological results are highly consistent, Kappa value > 0.80. The sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of HR T2WI+DWI+DCE-MRI for the staging of bladder cancer T1 were 93.75%, 94.44%, 96.77%, 89.47%, 94.00%, respectively. The T2 staging was 91.67%, 94.74%, 84.62%, 97.30%, 94.00%, and the T3 staging was 100.00%, 93.48%, 57.14%, 100.00%, 94.00%, respectively. T4 stages were 100.00%, 93.75%, 40.00%, 100.00%, 94.00%, 臆T1 vs 逸T2 94.44%, 93.75%, 89.47%, 96.77%, 94.00, respectively. 臆T2 vs 逸T3 were 100.00%, 93.18%, 66.67%, 100.00% and 94.00%, respectively. MRI multi-parameter signal intensity can effectively identify cystitis glandularis and bladder cancer, and multi-parameter combined diagnosis can improve the diagnostic efficiency of pathological staging. [ABSTRACT FROM AUTHOR]

With the continuous exploitation and utilization of rich cassiterite resources, the resources of cassiterite gradually tend to be "poor, fine and miscellaneous". The recovery and utilization of fine cassiterite has become an important problem in the field of mineral processing. Flotation is an important technical means to achieve the effective recovery of fine cassite rite, and the flotation collector is an important factor to determine the flotation effect of cassiterite. In the process of ore grinding and pulp blending, there are some metal ions in the flotation pulp system due to medium wear, equipment corrosion, mineral dissolution, backwater utilization, artificial addition and other reasons, which promote or hinder the adsorption of collectors on the surface of cassiterite, and then affect the flotation of cassiterite. In this paper, the effects of several common metal ions on the collection performance of benzohydroxamic acid and fatty acid in cassiterite flotation and their mechanism a re systematically summarized. It provides arefe rence for under standing the influence of metal ions on cassiterite flotation behavior and using metal ions to regulate cassiterite flotation. [ABSTRACT FROM AUTHOR]