Observations on the detection of dimethyl- and diethyl-nitrosamines in foods with particular reference to alcoholic beverages

Simple polarographic and gas chromatographic methods commonly used for the detection of nitrosamines in model systems have been found to be inadequate when applied to a potable spirit. Although these methods indicated the possible presence of nitrosamines in the spirit, gas chromatography combined with mass spectrometry showed that compounds other than nitrosamines were responsible for the putative chromatographic peaks. After isolation by preparative gas chromatography, the compound responsible for the polarographic activity, interpreted as nitrosamine in the unconcentrated spirit, was shown to be furfural.     

Resistance to psychopathology in adolescent monkeys (Macaca fascicularis) reared with mothers and peers.

Extended S. J. Suomi's (1971) incarceration-separation procedure for the production of depressive behavior pathology to mother- and peer-reared, adolescent Java monkeys (2 males and 2 females) (Macaca fascicularis). In light of recent protein deprivation studies, an attempt to assess the extent of self-inflicted food deprivation was also made. Although there were significant differences in the amount of food consumed, no pathological behavior patterns developed. In general, the experimental manipulations appeared to be associated with increased social interest rather than with depression. Mother-peer-reared adolescents appear to be resistant to experimentally induced psychopathology. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Indices of employer prejudice toward disabled applicants.

A scale to measure prejudice toward disabled applicants for employment, based upon the multifactor stimuli method of Triandis, was developed. The scale was used with 2 samples, a group of 18 personnel directors and a group of 87 school administrators, who rated applicants for the position of accountant and 3rd grade school teacher. 6 types of disability, as well as absence of disability were included in the scale. All disabled groups were subject to expressed prejudice. The disabilities could be ranked in terms of the amount of prejudice expressed toward them. Competence and sociability were also influential in ratings, the former being more significant and complementary with disability. The method can be used to measure prejudice of various groups toward disabilities in various settings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Removal by ultra-violet lamp of ethylene and other hydrocarbons produced by bananas

A small, germicidal u.v. lamp was found to destroy ethylene produced by bananas. In addition to ethylene, the fruit produced ethane, propane, propene, isobutane, butane, butene-2 and isopentane, which were also destroyed by the u.v, lamp.     

Mechanical degradation of dilute solutions of high polymers in capillary tube flow

Experimental results on mechanical degradation in capillary tubes of polyisobutylene polymers in dilute solution are described. In laminar flow, degradation is independent of tube length, indicating that entrance effects are dominant. This shows that capillary experiments do not yield explicit information on the effect of shear stress on mechanical degradation. In turbulent flow, large entrance effects are also observed, but some degradation does take place in the fully developed flow region.     

A New Multideck Broadcast Audio Tape Cartridge Unit

A new system for handling magnetic tape is described. This system was developed over the past three years to answer problems of tape handling convenience and reliability. The result is a multiple cartridge tape recorder/player using reversible continuous loop cartridges. There are only two rotating parts in the mechanism and the electronics are solid-state and plug-in. This is the only multiple cartridge tape system which can operate as 6 complete tape recorders in one. This is also the first continuous loop which can be reversed as a reel-to-reel tape.     

The specification of distributed sensing and control

Logical Sensor System Specification (LSS) has been introduced as a convenient means for specifying multi-sensor systems and their implementations. In this article we demonstrate how control issues can be handled in the context of LSS. In particular, the Logical Sensor Specification is extended to include a control mechanism which permits control information to (1) flow from more centralized processing to more peripheral processes, and (2) be generated locally in the logical sensor by means of a micro-expert system specific to the interface represented by the given logical sensor. Examples are given including a proposed scheme for controlling the Utah/MIT dextrous hand.     

传感器模拟前端

那些有传感器信号路径设计需求的客户发现自己正处在十字路口,他们有两条路可以选择,一条简单,一条困难。目前,客户们大多利用传统的模拟手段来解决信号路径问题,但这通常需要数周甚至数月的设计时间。     

Predicting Vulnerabilities in Computer-Supported Inferential Analysis under Data Overload

Data overload is a condition where a practitioner, supported by artefacts and other practitioners, finds it extremely challenging to focus in on, assemble and synthesise the significant subset of data for the problem context into a coherent situation assessment, where the subset is a small portion of a vast data field. In order to predict vulnerabilities in intelligence analysis that might arise when traditional strategies for coping with data overload are undermined, we conducted an observational study in a simulated setting. Ten professional intelligence analysts analysed the causes and impacts of the Ariane 501 accident. When study participants performed a time-pressured analysis outside their base of expertise based on sampling reports from a large set, some made inaccurate statements in verbal briefings. Participants that made no inaccurate statements spent more time during the analysis, read more documents, and relied on higher-quality documents than participants who made inaccurate statements. All participants missed potentially available relevant information and had difficulty detecting and resolving data conflicts. Sources of inaccurate statements were: (1) relying upon default assumptions, (2) incorporating inaccurate information and (3) incorporating information that was considered accurate at one point in time. These findings have design implications and point to evaluation criteria for systems designed to address the data overload problem in intelligence analysis.