小排量汽油机增压升级节油潜力的研究与分析

我国目前的增压汽油机逐渐向着小型化的趋势发展,这使得小排量汽油机不断增加。主要对小排量汽油机增压升级皆有潜力进行了研究和分析,在不改变发动机原有设计的情况下,对汽油机进行增压检测,通过试验了解小排量汽油机增压升级可达到的最大节油效果,希望本文的研究可以为同行提供一定的参考。     

浅谈SAAB9-3涡轮系统技术

涡轮增压是一种提高发动机的进气能力的技术,它采用专门的压气机将气体预先压缩再通入汽缸,这样,进入汽缸的气体质量将大大增加.同时,增压技术还能提高燃油经济性和降低尾气排放.萨博作为通用汽车最具个性化特色的品牌之一,则是第一家把源于航空领域的涡轮增压器应用到汽车产品上的汽车制造商.     

浅析涡轮增压发动机的性能及改进措施

随着人民物质生活水平的提高以及我国近两年的经济快速增长，汽车已不再是奢侈品而逐渐走入寻常百姓家。但普通的汽车发动机普遍存在燃油经济性偏低、效率低下而直接导致汽车尾气污染严重。根据我国的能源现状及环境压力，普通汽车发动机是既不经济又不环保，涡轮增压技术的出现很大程度上解决了这一难题，不仅提高了燃油效率还改善了汽车动力，但随之而出现的发动机“滞后响应”也影响了驾乘感受。本文重点介绍涡轮增压发动机的性能及针对“滞后响应”的改进措施。     

白鹤加压站压缩机采用变频电机驱动方式的可行性研究

介绍了上海白鹤加压站用于管道增压的离心压缩机驱动方式的选择。通过对加压站的供电现场条件调研和电机驱动、燃气轮机驱动的各项技术经济指标比较,最终选择采用变频电机驱动方式。     

冷却水塔的优化设计

本文主要从两方面探讨冷却水塔的优化设计：一是对冷却水塔内冷却水系统进行优化,改进后的冷却水系统能减少卧式壳管式冷凝器结水垢量甚至不结水垢;二是对冷却水塔通风机进行优化,用水轮机代替冷却水塔电动机,利用水轮机增压来推动风机工作,节省了冷却水塔电动机的耗能,达到节能目的。     

这些小恙别乘机啦

正近日,东方航空一架上海飞巴厘岛的航班在飞行中途紧急返航,原因是航班上一名旅客刚做完眼部手术,飞行中感到眼部不适。本着乘客健康为先的原则,机组在空中盘旋了两三个小时放油返航。据了解,大约20天前,该乘客做过眼部微创手术。航班起飞后,由于客舱增压,旅客眼压过高,眼部红肿,眼角有少量血迹渗出。     

上海供水企业确保用水高峰不断水

<正>据上海市气象局预测,上海今年夏季35℃高温日数为16至20天(常年为9天)。超过30℃的闷热天数也将比常年多。预计全市今年夏季高峰的用水量,比去年同期增长5%以上,供需状况不容乐观。对此,各自来水公司在用水高峰来到之前,已采取四大措施,确保居民用水无忧。①全面落实水厂、泵站设备更新改造计划,提前完成水厂、增压泵站、水库的检修,确保各种设施在高峰期间能满负荷供水。     

新车速递

↑奔驰CLS系列--戴姆勒·克莱斯勒在2月4号发售了梅赛德思·奔驰的CLS系列,包括CLS350、CLS500、CLS55AMG三种。CLS系列历来就追求内外一致的"感性美",而该系列的设计,也正是遵循这一准则。个性的头大灯以及车身流畅的线条都让CLS系列散发出迷人的气息,而内部的真皮以及木纹装饰都使得高贵感提升不少。引擎方面,CLS350采用新开发的3500cc V6DOHC 7速自动,CLS500则使用一贯的5000cc V87速自动,而CLS55AMG则会使用梅赛德思的超级增压版5000cc V8,并同时强化制动系统。国外折合含税价格CLS350为67万,CLS500为81万3千,CLS55AMG为110万人民币。     

老爹老妈为何不愿去敬老院

在北京，年近九旬的许老夫妇有两子两女，均十分孝顺，亲友和邻居都说两位老人有福气。但春节过后，为两位老人是否入住老人院的的问题，两老和子女们却闹得很不愉快。     

两本存折

是的，我也有两个秘密账户，两本秘密存折。两个账户，都无法得知最终的累积或剩余总数，两本存折，记载的数字每天都在变动，像高高悬在机场大厅的电动飞机时刻表，数字不停翻滚。     

Evaluation of a Sexual Abuse Prevention Workshop in a Multicultural,Impoverished Urban Area

Participants in the ESPACE sexual abuse prevention workshop were in grades 1 through 4 and attended three Montreal, Canada, public schools in low socioeconomic areas. The sample was culturally diverse, with half born outside of Canada. An evaluation was conducted to explore the effects associated with participating in the workshop and the effects of booster sessions conducted two years later. Outcomes included knowledge gained, the ability to offer behavioral responses to abusive situations, peer victimization, sense of safety, empathy, self-efficacy, and support. Results revealed that participants in this sample obtained low scores on measures of sexual abuse knowledge and that short booster sessions that elicit children's recall of the learned material might produce greater improvements.     

合理提高CNG汽车加气速度的几个关键环节

该文从气、车、站和运行管理等方面,综合分析研究了影响CNG汽车加气速度的因素,并提出一些建议和措施。     

我国小型LNG站发展的前景

该文介绍了我国液化天然气(LNG)工业的发展近况,对小型LNG接受站供气的经济可行性和技术可行性进行了探讨,并对大力发展小型LNG站提出了若干建议。     

液化石油气汽车加注站有关问题的探讨

探讨液化石油气汽车加注站的防火间距、地下贮罐、加注站与加油站的毗邻建站和安全管理措施。     

PRICE MATCHING AND THE DOMINO EFFECT IN A RETAIL GASOLINE MARKET

Using gasoline station price data collected eight times per day for 103 d for 27 stations in Guelph, Ontario, it is found that, consistent with an informal theory of competitive gasoline pricing, stations set prices to match a small number of other stations. However, these matched stations are not necessarily the closest. While retailers frequently respond to price changes within 2 h, many take considerably longer. Finally, while price decreases do ripple across the market like falling dominos, increases propagate across the city based more on geographic location and source of price control than on proximity to leaders of these increases. ( JEL L13, L40, L81)     

"Calling a state a state": feminist politics and the policing of violence against women in Brazil

This document reports on a 1990 case study of one of Brazil's 80 police stations established for the protection of women in response to feminist pressure to address excessively high levels of violence against women. These police stations, staffed by women to respond exclusively to complaints lodged by women, are an unusual institutional response to such violence. The study examines the station established in Salvador in 1986 to reveal which interests were served by the creation of the specialized stations. The first section of the article addresses the fact that Salvador's policewomen have gained little from the creation of the specialized stations and continue to suffer job-related sexual discrimination. Next, conceptions of gender identity among policewomen are analyzed, and the ideologies of "femininity" and "feminism" in the Brazilian context are discussed. The final section compares views on the abuse of women with views on police brutality and relays incidences when the policewomen beat male prisoners. It is argued that certain forms of violence are actually considered necessary to maintain social order and enact justice. It is concluded that all of the involved parties, the state, the feminists, the female citizenry, and Salvador's female police, benefit in part from the existence of the specialized police stations but that there are serious problems also, especially the fact that the policewomen involved are given little or no special training and no career incentives.     

城市加油站合理规划布局探讨——以杭州市区为例

城市加油站是完善城市道路交通系统的重要基础服务设施,该文结合国外城市加油站的发展规律和规划布局原则,通过对杭州中心城区(不含余杭、萧山)加油站布点的调查研究,分析杭州市市区加油站布局体系中存在的问题,并提出了相应的规划对策和建议。     

Community Radio and the Tōhoku Earthquake

This article illustrates issues that community radio stations in the stricken area of Northern Japan have faced, and discusses the necessity of social collaboration for supporting these radio stations. As of 1 December 2011, the Japanese Ministry of Internal Affairs and Communications had granted permission to operate special emergency‐broadcast FM stations, providing earthquake‐related information, to residents of 27 communities in the Tōhoku and North Kanto regions. Ten such community stations have used existing FM radio frequencies in their community for emergency broadcasting while 15 local governments set up newly established community‐based radio stations by themselves, relying on: conventional community radio stations nationwide; national and international non‐profit organizations; and voluntarily organized civic groups. Despite playing such an important role, community radio stations themselves have struggled to survive, not because of damage caused by the disaster, but as a result of the current social system based upon economic stability. Many of these stations have faced financial problems, such as losing advertising revenue and funding needed for equipment damaged by the disaster. It has become more difficult, particularly for the stations newly set up, to produce a variety of programs when the operation becomes prolonged. As the community radio plays a vital role as a lifeline to provide disaster‐related information to residents, we need to establish a supportive system in society that allows community radio to function as intended.     

Rates of Asymptomatic Nonurethral Gonorrhea and Chlamydia in a Population of University Men Who Have Sex With Men

ABSTRACT

Objective: To evaluate a text message (SMS) program as a booster to an in-person alcohol intervention with mandated college students. Participants: Undergraduates (N = 224; 46% female) who violated an on-campus alcohol policy over a 2-semester period in 2014. Methods: The SMS program sent drinking-related queries each Thursday and Sunday and provided tailored feedback for 6 weeks. Response rates to SMS drinking-related queries and the associations between weekend drinking plans, drinking-limit goal commitment, and alcohol consumption were examined. Gender differences were explored. Results: Ninety percent of SMS queries were completed. Weekend binge drinking decreased over 6 weeks, and drinking-limit goal commitment was associated with less alcohol consumption. Compared with women, men had greater reductions in alcohol consumption when they committed to a drinking-limit goal. Conclusions: Preliminary evidence suggests that an SMS program could be useful as a booster for helping mandated students reduce weekend binge drinking.     

建好加气站发展绿保汽车

介绍建设液化石油气汽车加气站的规范探讨、加气站类型、规模控制和参考间距。