Research status of comprehensive utilization of coal-based solid waste (CSW) and key technologies of filling mining in China: A review.

Coal-based solid waste (CSW) is the solid waste generated in the process of coal mining, washing and pyrolysis, which is an important industrial solid waste. The comprehensive utilization of CSW is a key link in the process of clean and efficient utilization of coal, and the use of CSW for coal mine filling mining is an important means of "harmless, resourceful and large-scale" utilization. In order to study the research status of comprehensive utilization of CSW and key technologies of filling mining in China, this paper combs and analyzes the current situation of comprehensive utilization of CSW from three parts, namely, physical and chemical properties of CSW, Industry-related policies, and ways and means of comprehensive utilization.

Experimental Study on the Diffusion Law of Coal-Based Solid Waste Slurry with Grouting Filling in the Gangue Voids of the Caving Zone.

Due to the concealment of the caving zone, it is difficult to detect and grasp the diffusion law of the slurry in the voids of the gangue pile. On the preparation of reasonable grouting filling materials, a large-scale three-dimensional gangue grouting filling test system has been established to detect the slurry pressure and resistivity inside the gangue pile and analyze the flow pattern of the slurry in the voids of the gangue pile. The research results show that the slump and bleeding rate of the filling slurry are significantly reduced with the increase of the fly ash content.

Efficient seawater desalination in lamellar nanochannel-based boridene filtration membrane.

With the progressively increasing demand for freshwater, the shortage of global freshwater resources has become one of the most serious events that all humans are facing now. The reverse osmosis (RO) technology that achieves freshwater from seawater is a promising strategy. However, current RO membranes suffer from the bottleneck of low efficiency.

Analysis of clinical characteristics of severe pertussis in infants and children: a retrospective study.

The incidence of pertussis shows an increasing trend in recent years, but some clinicians often lack sufficient understanding of the clinical characteristics and risk factors for severe pertussis, and more effective measures should be taken to reduce the incidence and mortality of pertussis in young infants METHODS: A retrospective study was conducted, and 184 infants and children with pertussis who had been hospitalized in the Department of Pediatrics of Beijing Ditan Hospital affiliated with Capital Medical University from January 2016 to December 2017 were included. Clinical data of the patients were collected and the clinical characteristics were statistically analyzed RESULTS: Among the 184 patients, 41.85% were infants < 3 months of age, and 65.

Epidemiological and clinical characteristics of 35 children with COVID-19 in Beijing, China.

Importance: Within the coronavirus disease 2019 (COVID-19) global pandemic, more attention is warranted for whether this new infectious disease has unique manifestations in children.

Objective: To retrospectively determine the epidemiological and clinical characteristics of 35 children with COVID-19 in Beijing, China.

Methods: We collected data for 35 children diagnosed with COVID-19 who were admitted to Beijing Ditan Hospital from January 2020 to June 2020, and analyzed their epidemiological characteristics, clinical manifestations, laboratory examinations, chest imaging findings, treatments, and outcomes.

Unique manifestations and risk factors of Jarisch-Herxheimer reaction during treatment of child congenital syphilis.

Objectives: The objective of this retrospective study was to summarise the clinical manifestations of, and to analyse the incidence and risk factors of, Jarisch-Herxheimer reaction (JHR) during the treatment of children with symptomatic congenital syphilis.

Methods: Clinical data of 60 children with clinically and laboratory diagnosed congenital syphilis, hospitalised in Beijing Ditan Hospital between January 2010 and November 2015, were collected and analysed.

Results: A total of 11 patients with congenital syphilis (11/60, 18.