Abstract Antimony sulfide (Sb 2 S 3 ) is a promising photoelectric material because of its wide bandgap approximately 1.7 eV for next‐generation solar cells, high optical absorption coefficient, and green earth‐abundant constituents. Different to traditional cubic structure photovoltaic materials, Sb holds one‐dimensional crystal thin film with [hk1] preferred orientation shows one‐order‐higher carrier transport mobility. However, all the reported films exhibited [hk0] on CdS‐based...

With the continuous development of global economy, public-private partnership (PPP) model is increasingly used in field project management. Through in-depth cooperation between government and social capital, PPP achieves optimal allocation resources reasonable sharing risks, brings new solutions to infrastructure construction improvement public services, a win-win situation. This article analyzes main characteristics through literature review method, discusses advantages management, focuses...

Hydraulic measures are widely used to improve coal seam permeability, but not all hydraulic have a positive effect on permeability in soft seams, and the permeability-enhancing of seams is clear. To further study mechanism compare punching reaming this takes Changping Mine, China, as its case study. A comparative analysis was conducted influence range gas extraction enhancement. The following conclusions were mainly drawn: mathematical calculation model established for strength impact...

In order to explore the influence of water on chain reaction characteristics gas explosion, 20 L explosion ball experiment and homogeneous constant volume combustion reactor CHEMKIN 17.0 simulations were carried out. The response under four different contents was tested simulated. effects pressure, free radicals, reactants compared analyzed. research results show that inhibition enhanced with increase fraction in initial mixture; temperature, catastrophic gases such as CO, concentration...

In addition to the problem of torque and space optimization, heat magneto-rheological brake generated by friction during vehicle cruising is also a major problem. Because fluids are normally immersed in rotating disc or discs electromagnetic casing, there still between even without applying magnetic field cruising. The may seriously affect braking capacity brake. leads consumption fuel. order overcome this problem, new mechanism designed paper. consists three parts. They two-way overrunning...

In this paper, FLUENT was used to simulate the effect of inlet velocity on flow field a spherical closed device, gas explosion under different conditions in explosive and incident Babao coal mine goaf. Results suggest that when is not evenly mixed, high local pressure occurs reaction unstable. Time taken for reach maximum uniform mixing generally shorter than non-uniform mixing, temperature pressures are typically higher those condition mixing. Residual CH4 after simulated increases with an...

In order to study the effect of water and CH4 concentration on gas explosion, a 20L spherical explosive device was used carry out water-containing explosion experiment, simulation carried with CHEMKIN-PRO, mechanism analyzed from perspective free radicals energy. The results showed that upper limit maximum pressure temperature decreased significantly increase content. higher CH4, more obvious inhibitory pressure, optimal As content increase, residual increases after O2 decreases, CO produced...

The bicycle is a healthy and sustainable transport mode due to its emission-free characteristics. To increase use, it fundamental provide bicycle-friendly environments. better monitor environments, this study proposed the concept of bicycling environment quality (BEQ), which was defined by perceived satisfaction conflict level. Data collection conducted at 19 road segments in five sites located Beijing, China. Then, speed-related acceleration-related behavior indicators (BBIs) were extracted...

In order to address the issue that large complex aircraft panels machining can't meet demand for precision efficient and greenhouse machining, problem induced process engineering limited scope, technology integrated with edge trimming, port opening, perforation skin thickness is researched combined analysis of deformation, then achieved, efficiency quality advanced, chemical empoison avoided. The research results show advanced application manufacturing drives development aeronautical...

Compared with split lifting by floating crane, the float-over is less time-consuming and has larger capacity, especially suitable for large medium sized offshore platforms. Float-over installation process of a deepwater semisubmersible platform topside analyzed in this paper. And multi-floating coupling calculation carried out typical loading conditions mating between column top structure. The motion response leg unit position barge received. results show that float movement condition meets...

Cyber attacks on enterprises and organizations have increased dramatically recently. Endpoint monitoring systems are widely deployed in to stop these attacks. System audit logs the critical data resource of endpoint monitoring, containing trustworthy comprehensive records for forensic investigation behavior analysis. However, analyzing understanding system is challenging due massive volume low semantics events. This paper proposes LogMiner, a log reduction approach based pattern mining. The...

The Measurement test business scheduling work is very complicated because of the cooperation with various people and large amount data need to be considered. In order change traditional manual management way relief from complex analysis massive data, this paper analyzes flow combined experience, introduces a high degree information sharing effective use resources system. With system, staff can create plan based on historical arrange on-site including times, places persons involved, see...

A design and implementation of expert system fault diagnosis dry-mixed mortar based on Profibus fieldbus large-scale PLC is proposed in this paper.Firstly, the control principle algorithm, hardware choice integration are introduced.Secondly, by analyzing composition, structure performance drymixed system, types, range, causes were investigated.Finally, after comparing traditional theories modern ones, using Fault Tree Analysis was established.

This paper presents the frame of RISMS (Road Integrated Safety Management System); RISMS's two major concepts which are System (SMS) and Response (SRS) defined; The content, platform, function, achieving way, application technique consist business system technical primarily designed; Business model road integrated safety management, emergency management organization proposed; is composed hardware-supporting-platform, data-base, coordinated service applied platform constructed; thought...