普通住宅楼排水系统一层与其它层分开设置浅议

普通住宅楼生活污水排水系统在使用过程中普遍存在着管道堵塞、污水在一楼住宅漫流、污染居室环境等现象。本文认为造成这种现象的主要原因是各层共用一根立管和排出管,应采用一层和其它层排水系统分开设置和加强管理等方法来解决。     

Using community outreach to promote integrated health care: A pilot project.

Although research has demonstrated the efficacy of psychological services for ameliorating physical conditions, consumers are often uninformed of the advantages of integrated health care. To begin to address this knowledge gap, the authors developed, offered, and assessed a 2-hr community outreach program, which included lectures highlighting the benefits of providing psychological services within general health care, a demonstration of stress-reduction techniques, and first-person accounts of the benefits of psychological health care. The preliminary results of the evaluation were positive. It is recommended that similar programs be disseminated in diverse communities. Suggestions for planning and conducting these types of programs are offered. Furthermore, strategies for improving the goals and content of workshops are offered, with a focus on the distinction between promotion of attitudinal change versus practical activism. Finally, implications for community outreach that is intended to inform the public of the value of psychological health care services are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reaching underserved HIV-positive individuals by using patient-centered psychological consultation.

HIV disease is spreading most rapidly among populations for which psychotherapy is not routinely utilized, such as individuals from African American, Hispanic, rural, and low socioeconomic backgrounds. To more effectively address barriers to care, the authors propose and implement an innovative model of consultation that allows patients to request and receive a psychological consultation concurrent with their HIV medical care. Psychological consultations from a 2-year period before and after model implementation are compared. Results indicate that this model increases consult utilization and holds much promise for reaching underserved individuals in HIV clinics. Implications for usage in other medical settings are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

楼房外墙渗水的施工维修

本文从对楼房外墙渗水的诸种现象分析入手,指出了渗水的原因及渗水对墙体的危害,并从施工维修角度提出了对外墙渗水的维修处理方法,可供施工维修参考.     

Development and evaluation of optimization-based air economizer strategies

This paper describes two new strategies for controlling air economizers. The model-based control strategy uses a model to estimate the load on the cooling coil for 100% outdoor air and minimum outdoor air and transitions dampers between these two positions to minimize the load. The optimization-based control strategy uses a cooling coil model and a one-dimensional optimization routine to determine the fraction of outdoor air that minimizes the coil load. A coil model based on the contact–mixture analogy was adopted for this study and validated with experimental data. Simulations were used to compare the new economizer control strategies with traditional strategies. Simulations evaluated the sensitivity of the annual and peak cooling loads to outdoor air and return air sensor errors and climatic conditions. Incorrect control decisions stemming from sensor errors reduce the achievable energy savings and lead to higher peak hourly loads. For a scenario representative of poorly maintained sensors, the lowest annual coil loads of the economizer strategies investigated are 3.0–40.3% higher than those achieved for the ideal scenario of optimization-based control and ideal sensors (i.e., no sensor errors), and the lowest peak hourly loads for those cases are 6.8–84.1% higher than those for the ideal scenario.     

Distributed fault diagnosis of heating,ventilation, and air conditioning systems

The problem of distributed fault detection and isolation (FDI) for heating, ventilation, and air conditioning (HVAC) systems has been addressed in this work. First, a linear model is identified for subunits of an HVAC system. Next, a local FDI (LFDI) framework is designed for each unit under consideration. A distributed FDI architecture is designed where the LFDI frameworks communicate to exchange information to achieve enhanced FDI in each unit. As a result, each LFDI framework functions as intended even in the presence of faults that affect multiple units. Effectiveness of the proposed distributed FDI framework is shown for various commonly occurring fault scenarios. © 2018 American Institute of Chemical Engineers AIChE J, 65: 640–651, 2019     

Emissions reduction data for grid-connected photovoltaic power systems

This study measured the pollutant emission reduction potential of 29 photovoltaic (PV) systems installed on residential and commercial building rooftops across the US from 1993 through 1997. The US Environmental Protection Agency (EPA) and 21 electric power companies sponsored the project. This article presents results of analyses of each PV system’s ability to offset electric utility power plant emissions of sulfur dioxide (SO₂), nitrogen oxides (NO_x), and carbon dioxide (CO₂). Each PV system’s performance was monitored and compared with hour-by-hour operating characteristics of the participating electric utilities in order to determine pollution offsets. The monthly mean and standard deviation offset are given for each pollutant, along with the coefficient of variation.     

Detection of multiple naturally occurring Salmonella serotypes from commercial broiler carcasses with conventional methods

Many laboratories sampling foods for Salmonella are interested only in presence or absence of Salmonella, so only one colony may be selected. The objectives of this study were to use two selective enrichment broths and two selective agar plating media for Salmonella recovery from naturally contaminated broiler carcass rinsates and evaluate these media combinations on Salmonella serotypes recovered from each carcass. Broiler carcasses (n = 52) from a commercial processing plant prior to chilling were rinsed with buffered peptone water and after incubation subcultured to gram-negative and tetrathionate, and after inoculation to Rappaport Vassiliadis broth which was incubated and then streaked onto plates of Brilliant Green Sulfa and Xylose-Lysine-Tergitol-4 agar. On 11/49 positive carcasses, both plating media yielded the same serotypes; for the other 38 positive samples different serotypes were found on the different plating media. Enrichment and plating media combinations influence the serotypes recovered and demonstrates bias even in a limited study such as this.