2k W固态短波发射机主要用于广播播音方面,播音时间一般较长,在各个广播电台之间的信号转播中有着重要的作用,为相关领域的工作程序简化、工作效率和质量的提升做出了贡献。然而在实际应用过程中,容易由于2 k W固态短波发射机自身发射...2k W固态短波发射机主要用于广播播音方面,播音时间一般较长,在各个广播电台之间的信号转播中有着重要的作用,为相关领域的工作程序简化、工作效率和质量的提升做出了贡献。然而在实际应用过程中,容易由于2 k W固态短波发射机自身发射功率的影响使信号的正常传输不能够正常进行,阻碍了广播电台的正常运行。本文通过分析2 k W固态短波发射机发射功率的相关影响因素提出相应的解决对策,以期加强对这一设备的认识。展开更多
Six main public domain water quality models which are presently available for Rivers and streams are being captured in this article. These main models could produce important results if they are used in the correct ma...Six main public domain water quality models which are presently available for Rivers and streams are being captured in this article. These main models could produce important results if they are used in the correct manner, because they are different in terms of assumptions, strength and weaknesses, processes they represent, modeling capability and data in-put requirements. The Model review discussed includes, water quality analysis simulation program (WASP7), simulation catchment (SIMCAT), quality simulation along Rivers (QUASAR), and the temporal overall model for catchment (TOMCAT), QUAL2KW, QUAL2EU. The models are described individually according to a consistent set of criteria-conceptualization, model capability, model strengths, limitations, input data and how it utilized. The outcome showed that TOMCAT and SIMCAT are important in ASSESSING effect of point sources in a very simple way. The QUAL2KW, unlike the QUAL2EU where macrophytes play a major interaction, it can convert algal death to carbonaceous Bio-chemical Oxygen Demand (CBOD), thereby making it more suitable. In addition to the extensive requirement of data, it is expensive and time consuming to set up these complex models such as QUASAR and WASP7. Therefore, one model cannot be used for all the required functionalities. Choosing a model would depend on a specific application, financial cost and time availability. This article may be of help in choosing a suitable model for a specific water quality problem.展开更多
文摘2k W固态短波发射机主要用于广播播音方面,播音时间一般较长,在各个广播电台之间的信号转播中有着重要的作用,为相关领域的工作程序简化、工作效率和质量的提升做出了贡献。然而在实际应用过程中,容易由于2 k W固态短波发射机自身发射功率的影响使信号的正常传输不能够正常进行,阻碍了广播电台的正常运行。本文通过分析2 k W固态短波发射机发射功率的相关影响因素提出相应的解决对策,以期加强对这一设备的认识。
文摘Six main public domain water quality models which are presently available for Rivers and streams are being captured in this article. These main models could produce important results if they are used in the correct manner, because they are different in terms of assumptions, strength and weaknesses, processes they represent, modeling capability and data in-put requirements. The Model review discussed includes, water quality analysis simulation program (WASP7), simulation catchment (SIMCAT), quality simulation along Rivers (QUASAR), and the temporal overall model for catchment (TOMCAT), QUAL2KW, QUAL2EU. The models are described individually according to a consistent set of criteria-conceptualization, model capability, model strengths, limitations, input data and how it utilized. The outcome showed that TOMCAT and SIMCAT are important in ASSESSING effect of point sources in a very simple way. The QUAL2KW, unlike the QUAL2EU where macrophytes play a major interaction, it can convert algal death to carbonaceous Bio-chemical Oxygen Demand (CBOD), thereby making it more suitable. In addition to the extensive requirement of data, it is expensive and time consuming to set up these complex models such as QUASAR and WASP7. Therefore, one model cannot be used for all the required functionalities. Choosing a model would depend on a specific application, financial cost and time availability. This article may be of help in choosing a suitable model for a specific water quality problem.
