Assessment of of phosphorus fertilizer wastes production impact on subterranean water quality (Gomel chemical plant, Republic of Belarus)

Relevance. Phosphate raw materials processing at the Gomel chemical plant over a period of more than 50 years has led to accumulation of millions of tons of phosphogypsum dumps. They are a source of subterranean water contamination by sulfates, phosphates and other chemical compounds. Therefore, there is the need in current estimation of the scale and extent of aquifers contamination, taking into account the geological and hydrogeological conditions that influence the migration of contaminants. Aim. Assessment of hydrogeological parameters affecting distribution of contaminants in subterranean water and the degree of aquifers contamination. Objects. Aquifers and impermeable horizons. Methods. Methods for assessment of hydrogeological parameters, methods for determining the chemical composition of subterranean water. Results. The paper assesses a technogenic effect, produced by dumps of Gomel chemical plant. It reviews a subterranean water monitoring local network within the Gomel chemical plant influence area. The hydrogeological parameters of aquifers of the upper hydrodynamic zone are quantitatively assessed, given that this zone undergoes the strongest anthropogenic impact. The study of subterranean water quality ends up with three classes of contamination: high, moderate and insignificant. Sulphates, nitrogen ammonium, phosphorus phosphate are identified as major contaminants. The authors find a spatial pattern of subterranean water contaminants differentiation that tends to develop both horizontally and vertically. As a result of the study, areas and sources of high groundwater contamination are determined and mapped. A conclusion is drawn on the necessity of further control over the subterranean water conditions and contamination development in time and space

Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

无线传感器网络，作为全球未来十大技术之一，集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术，可实时感知、采集、处理、传输网络分布区域内的各种信息数据，在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议，并针对大规模的无线传感器网络设计了一种树状路由协议，它根据节点地址信息来形成路由，从而简化了复杂繁冗的路由表查找和维护，节省了不必要的开销，提高了路由效率，实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR（AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位：工学硕士院系专业：信息科学与技术学院通信工程系_通信与信息系统学号：2332007115216

The Austrian Party System between 1945 and 1955

Katedra mezinárodních vztahůDepartment of International RelationsFakulta sociálních vědFaculty of Social Science

The Austrian Party System between 1945 and 1955

Katedra mezinárodních vztahůDepartment of International RelationsFakulta sociálních vědFaculty of Social Science

Locomotive operation mode - the basis for developing the requirements for the energy storage device on railway transport

Increasing the efficiency of cargo transportation by rail is not only one of the main directions of the company JSC “Russian Railways” but also one of the main tasks of our country in order to achieve sustainable economic growth. Electric rolling stock is the largest consumer of electric energy in the company, that’s why its effective and failure-free operation is the way to solve the set tasks. The paper deals with studies related to the operation modes of a freight electric rolling stock of direct current for the purpose of determining the requirements for electric energy storage device, since it is the electric rolling stock that determines the daily schedule of electric load. The order of the analysis of experimental trips of freight electric locomotives of a direct current on the basis of cartridges of recorders of traffic parameters installed on the locomotive is determined. On the basis of the analysis of conducted trips, the main requirements for the energy storage device were obtained with a single running of electric DC rolling stock, namely the average duration of the operation modes of the electric locomotive, the maximum, minimum, and average values of voltage and current, the average value of the electric energy returned to the contact network, time of charge/discharge, and the useful energy intensity of the electric energy storage device. The studies were carried out with the support of the Russian Foundation for Basic Research for the project No 17-20-01148 ofi_m_RZD/17

Remodeling of Actin Filaments by Cofilin

see attachmen