More PM parts

The typical family vehicle built in North America contained 40 pounds of PM parts in the 2003 model year, up one pound from 2002. The 2004 model year should see 41.5 pounds of PM parts in the typical vehicle, a 3.8 per cent gain.This is a short news story only. Visit www.metal-powder.net for the latest metallurgy industry news     

Mothballed plant

Metal Powder Products has mothballed its Coldwater, Michigan, plant. The PM parts facility dates back to the 1960s.This is a short news story only. Visit www.metal-powder.net for the latest metallurgy industry news     

Making better PM products

A two-day seminar dealing with machinability of PM parts is to be held in Dearborn, Michigan, in early December. The meeting at the Hyatt Regency on December 3-4 is designed to provide delegates with in-depth knowledge and understanding of both the fundamental and practical aspects of machinability in PM parts. Among the topics to be covered are improving operations to make higher quality parts, reducing costs, increasing productivity and greater profits.This is a short news story only. Visit www.metal-powder.net for the latest powder metallurgy industry news.     

Stainless winners

According to American Metal Market, Ford is set to use a record number of PM stainless steel parts in new premium midsize saloons and sport wagons.This is a short news story only. Visit www.metal-powder.net for the latest powder metallurgy industry news.     

Making the swing even sweeter

Golf club maker Bobby Grace Putters, of Clearwater, Florida, is using PM tungsten-copper and pure tungsten weights in its putters to expand the sweet spot.This is a short news story only. Visit www.metal-powder.net for the latest powder metallurgy industry news.     

… as QMP offers new high-strength grades

Canadian-based QMP Metal Powders will be promoting a high-strength diffusion-bonded molybdenum steel powder at PM2003 in Valencia later this month. ATOMET DB49 is a newly developed grade that allows the manufacture of PM parts with a tensile strength of more than 850MPa using normal sintering conditions in belt furnaces equipped with a rapid cooling zone. The company will also be exhibiting their own polymeric HGS lubricating system that, they say, “drastically enhances the strength of green parts to the point where they can withstand the stresses applied by cutting tools during machining. QMP will also be showing off a new sponge-type iron powder, ATOMET 24, for high green strength applications that can be used to facilitate the production of more complex parts.This is a short news story only. Visit www.metal-powder.net for the latest powder metallurgy industry news.     

GKN puts positive spin on decline in sales

GKN put a positive spin on its PM businesses for the first half of 2003 despite a dip in sales to ?318 million ($512 million). The company attributed the decrease to the dollar’s decline against the Pound and the Euro. Sales levels remained stable in the face of reduced demand from markets in North America and Western Europe. The division is heavily dependent on U.S. automotive markets.This is a short news story only. Visit www.metal-powder.net for the latest metallurgy industry news     

Bad news transmission as a function of the definitiveness of consequences and the relationship between communicator and recipient.

There is ample evidence suggesting (e.g., A. Tesser & S. Rosen, 1975) that people are reluctant to transmit bad news. Research on rumors, on the other hand, suggests that people sometimes are less reluctant to transmit bad news. It is argued that differences between the 2 lines of research include the definitiveness of the consequences of the news and the relationship between communicator and recipient. The influence of these 2 factors on news transmission was investigated in 3 experiments. Results showed that bad news with indefinite consequences was transmitted more often than bad news with definite consequences and that both kinds of bad news were transmitted more often if the recipient was a friend rather than a stranger. Differences in feelings of moral responsibility to transmit the news largely accounted for both effects. The 2 factors did not affect the likelihood of good news transmission. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Being the best bearer of bad tidings.

Giving bad news is an unpleasant task, and the medical literature provides numerous guidelines for giving bad news well. However, what people mean by "giving bad news well" is less clear. What should be the goal when communicating bad news? The authors suggest that the goal of news-givers should be to guide recipients toward a desired response and the authors propose a theoretical framework, the Bad News Response Model, for delivering bad news that draws from research in health and social psychology. The model is applicable to all forms of bad news and specifies that three characteristics of the news (controllability, likelihood, and severity) influence which response (Watchful Waiting, Active Change, or Acceptance) will most often lead to the best quality of life for the recipient. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

长沙冬季PM2.5、PM10中金属元素的浓度及分布特征

选取长沙县某商业区、居住区、对照区三个区域,研究该区域内的PM_2.5、PM₁₀浓度及其金属元素贡献率,结果表明,空气中PM_2.5、PM₁₀浓度总体呈现商业区>居住区>对照区的趋势,PM_2.5中贡献率最大的5类金属元素为Na、Ca、K、Al和Mg,重金属中贡献率最大的为Cu和Mn;PM₁₀中为Na、Ca、Fe、Al和Mg,重金属中贡献率最大的为Cu和Zn。PM_2.5、PM₁₀中含量最低的重金属元素都为As。     

从PM2004看世界粉末冶金的发展现状

详细介绍了2004年粉末冶金世界大会的基本情况, 概述了国际粉末冶金工业现状, 并按照类别阐述了粉末冶金各技术领域以及材料产品, 如粉末烧结钢、粉末注射成形、粉末制备技术、粉末压制技术、粉末烧结理论与技术、粉末多孔材料、硬质合金、粉末轻金属、粉末零件后续处理加工技术、粉末冶金过程模拟与标准化以及粉末功能材料等的发展趋势。世界粉末冶金的发展现状和趋势表明粉末冶金技术是工业化集成技术, 而不仅仅是一种高技术。     

中国(大陆)粉末冶金零件行业2004年进展

本文介绍了中国（大陆）粉末冶金零件行业2004年的生产概况与市场动向。阐述了粉末冶金汽车零件的市场动态。分析了中国（大陆）粉末冶金零件行业面临的挑战。介绍了美国APMI International的PMT认证。     

Participant modeling with or without cognitive treatment for phobias.

To determine whether cognitive treatment would enhance the effectiveness of participant modeling (PM) treatment for phobias, 36 subjects phobic to dogs and cats were given either PM alone, PM with self-instructional training, PM with self-verbalizations ("thinking aloud"), or placebo treatment. The three PM treatments produced substantial and equivalent improvement in behavior at posttest, in contrast to the placebo group, which did not change. At follow-up, the combined PM/self instructional training group showed more phobic behavior and lower self-efficacy than the other PM groups. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Topographic organization of medial pulvinar connections with the prefrontal cortex in the rhesus monkey

The medial nucleus of the pulvinar complex (PM) has widespread connections with association cortex. We investigated the connections of the PM with the prefrontal cortex (PFC) in macaque monkeys, with tracers placed into the PM and the PFC, respectively. Injections of wheat germ agglutinin-horseradish peroxidase (WGA-HRP) placed into the PM resulted in widespread anterograde terminal labeling in layers III and IV, and retrograde cellular labeling in layer VI of the PFC. Injections of tracers centered on the central/lateral PM resulted in labeling of dorsolateral and orbital regions, whereas injections centered on caudal, medial PM resulted in labeling of dorsomedial and medial PFC. Since injections of the PM included neighboring thalamic nuclei, retrograde tracers were placed into distinct cytoarchitectonic regions of the PFC and retrogradely labeled cells in the posterior thalamus were charted. The results of this series of tracer injections confirmed the results of thalamic injections. Injections placed into areas 8a, 12 (lateral and orbital), 45, 46 and 11, retrogradely labeled neurons in the central/lateral PM, while tracer injections placed into areas 9, 12 (lateral), 10 and 24, labeled medial PM. The connections of the PM with temporal, parietal, insular, and cingulate cortices were also examined. The central/lateral PM has reciprocal connections with posterior parietal areas 7a, 7ip, and 7b, insular cortex, caudal superior temporal sulcus (STS), caudal superior temporal gyrus (STG), and posterior cingulate, whereas medial PM is connected mainly with the anterior STS and STG, as well as the cingulate cortex and the amygdala. These connectional studies suggest that the central/ lateral and medial PM have divergent connections which may be the substrate for distinct functional circuits.     

Estimating Reference Evapotranspiration Using Limited Weather Data

The FAO-56 Penman-Monteith combination equation (FAO-56 PM) has been recommended by the Food and Agriculture Organization of the United Nations (FAO) as the standard equation for estimating reference evapotranspiration (ET0). The FAO-56 PM equation requires the numerous weather data that are not available in the most of the stations. This paper examines the potential of FAO-56 PM equation in estimating the ET0 under humid conditions from limited weather data. For this study, full weather data sets were collected from six humid weather stations from Serbia, South East Europe. FAO-56 reduced-set PM ET0 estimates were in closest agreement with FAO-56 full set PM ET0 estimates at the most of locations. The difference between FAO-56 full set PM ET0 estimates and FAO-56 PM reduced-set ET0 estimates generally increases by increasing the number of estimated weather parameters. Overall results indicate that FAO-56 reduced-set PM approaches mostly provided better results compared to Turc equation, adjusted Hargreaves equation and temperature-based RBF network. This fact strongly supports using the FAO-56 PM equation even in the absence of the complete weather data set. The minimum and maximum air temperature data and local default wind speed value are the minimum data requirements necessary to successfully use the FAO-56 PM equation under humid conditions.     

Elevated positive mood: A mixed blessing for abstinence.

The present study, a secondary analysis of published data (B. Hitsman et al., 1999), assessed (a) the influence of initial positive mood (PM) on smoking cessation and (b) whether smokers low in PM benefited from fluoxetine versus placebo for cessation. Euthymic adult smokers (N = 103) received 10 weeks of cessation treatment. Analyses showed a Time × PM interaction, indicating that higher baseline PM predicted decreased abstinence during treatment but increased abstinence afterward, mediated by time to dropout. Dichotomous initial PM interacted with drug, suggesting a benefit of fluoxetine for low-PM smokers. Results indicate that lower pretreatment PM may inhibit long-term cessation. Smokers with lower baseline PM may benefit from treatment that increases PM. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于化学团聚铁矿烧结过程PM10/2.5/1.0脱除研究

铁矿烧结工序是钢铁工业最大的PM10/2.5/1.0排放源.提出基于化学团聚铁矿烧结过程PM10/2.5/1.0 脱除技术,研究了不同团聚剂种类及用量对其团聚效果的影响.结果表明,CMC(羧甲基纤维素钠)质量分数为0.05％,喷洒时间12min(720～1440 s区间)时,PM10、PM2.5、PM1.0颗粒数脱除效...     

铁矿烧结过程微细颗粒物（PM10/PM2.5）排放特性及研究进展

铁矿烧结工序是现代钢铁生产流程中必不可少的环节,但又是钢铁工业最大的微细颗粒物(PM10和PM2.5)排放源,占总排放量的40％左右.阐述了铁矿烧结过程PM10和PM2.5的排放特性,颗粒形貌及其物理化学性质;综述了国内外关于烧结过程微细颗粒物减排的最新研究进展,提出了烧结过程微细颗粒物减排研究的发展方向.     

Electrosynthesized non-conducting polymers as permselective membranes in amperometric enzyme electrodes: a glucose biosensor based on a co-crosslinked glucose oxidase/overoxidized polypyrrole bilayer

The sperm plasma membrane is segregated into functionally, biochemically, and structurally distinct domains yet the protein sorting pathways and assembly mechanisms that assemble these domains during spermiogenesis are incompletely understood. We previously characterized two structurally related size-variant, integral membrane proteins of 52 kDa (PM52) and 35 kDa localized to the periacrosomal plasma membrane of guinea pig cauda epididymal spermatozoa (Westbrook-Case et al., 1994). In this study we used light and electron microscopic immunocytochemistry to define the expression pattern and sorting pathway that establishes the domain-specific distribution of PM52 during spermiogenesis. The PM52 is first expressed in acrosome-phase spermatids and it localizes exclusively to the cytoplasmic lobe. Immunoelectron microscopy revealed that both cytoplasmic vesicles and the plasma membrane of the cytoplasmic lobe labeled with anti-PM52. During early stages of expression, PM52 appeared to be absent from the head region, but significant PM52 accumulation over the spermatid head was noted in late acrosomal phase spermatids. Throughout spermiogenesis PM52 extended posteriorly to the annulus, which represents a barrier preventing PM52 diffusion into the posterior tail. Following the migration of the annulus to the midpiece-principal piece junction, PM52 began to disappear from the flagellar region and at the completion of spermiogenesis most of the PM52 was restricted to the acrosomal segment. Spermatids and epididymal sperm PM52 exhibited identical sizes by SDS-PAGE and immunoblotting, indicating that they are not proteolytically modified during epididymal maturation. The PM52 antibodies were also used to screen a guinea pig testis cDNA library, and sequence determination of full-length PM52 clones demonstrated identity of a sperm membrane protein recently termed "sperad" (Quill and Garbers, 1996). Membrane barriers and potential mechanisms establishing the domain-specific residence of PM52 are discussed.