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51.
PETER G. HARRIS 《International Journal of Dairy Technology》1982,35(3):104-108
A survey of 8,749 people was conducted in Great Britain to determine the percentage of those who limited or avoided consumption of cow's milk for reasons other than financial. Those who limited or avoided cow's milk consumption were further questioned to determine whether their reasons were perceived by them to relate to allergy/lactose intolerance. Of the sample population 1.47% limited or avoided cow's milk consumption for reasons that might possibly be related to allergy/lactose intolerance . 相似文献
52.
PETER W. VOISEY 《Journal of texture studies》1971,2(2):129-195
Abstract. The use of electronic instruments to record force and deformation in objective texture measurements is reviewed to point out that much equipment is available for that purpose and to indicate some of the problems associated with its use. Electronic transducers are universally applicable to texture measuring systems and can give precise measurements with a high degree of resolution. Several examples of modernized texture instruments are described to demonstrate different methods of approach. Special purpose or ‘universal units’ can be developed. It is concluded that force and deformation can be recorded by electronic techniques in any textural test but that the interpretation of the data is the major problem. 相似文献
53.
ANTENNAL AND BEHAVIORAL RESPONSES OF GRAPEVINE MOTH <Emphasis Type="Italic">Lobesia botrana</Emphasis> FEMALES TO VOLATILES FROM GRAPEVINE 总被引:2,自引:0,他引:2
Tasin M Anfora G Ioriatti C Carlin S De Cristofaro A Schmidt S Bengtsson M Versini G Witzgall P 《Journal of chemical ecology》2005,31(1):77-87
Grapevine moth Lobesia botrana is the economically most important insect of grapevine Vitis vinifera in Europe. Flower buds, flowers, and green berries of Chardonnay grapevine are known to attract L. botrana for oviposition. The volatile compounds collected from these phenological stages were studied by gas chromatography—mass spectrometry, and the antennal response of L. botrana females to these headspace collections was recorded by gas chromatography—electroantennography. The compounds found in all phenological stages, which consistently elicited a strong antennal response, were pentadecane, nonanal, and -farnesene. In a wind tunnel, gravid L. botrana females flew upwind to green grapes, as well as to headspace collections from these berries released by a piezoelectric sprayer release device. However, no females landed at the source of headspace volatiles, possibly due to inappropriate concentrations or biased ratios of compounds in the headspace extracts. 相似文献
54.
PETER R. SEGATTO 《Journal of the American Ceramic Society》1960,43(5):278-281
A rapid method for the determination of boron in borosilicate glasses by neutron transmission has been developed. The glass sample is dissolved in 48% HF, placed in a polyethylene cell which is located near a Ra-Be neutron source. The neutron source and sample cell are embedded in a parafEn moderator. The attenuation of the neutron flux, which can be related to the boron concentration in the cell, is monitored with a BF3 enriched B10 proportional counter. Boron determinations can be made in approximately 40 minutes with an accuracy of ±%. Owing to the low sensitivity (approximately 1 mg.) the major disadvantage of the method is the large sample size necessary. The method, however, is well suited for use as a quality control procedure. 相似文献
55.
56.
Abstract. Different methods used to measure pea tenderness are reviewed. Objective estimation of crop maturity, pea tenderness and quality has concerned researchers for many years. Chemical and mechanical methods have been used, and several instruments developed. There is a high degree of correlation between methods which also appear to agree with sensory analysis. For grading peas to establish the price paid to the grower, accuracy and economy under commercial conditions is of prime importance. Some methods are unsuitable on this basis, and presently used instruments and the manner in which they are operated require improvement. 相似文献
57.
CRITERIA USED BY RESEARCH AND DEVELOPMENT ENGINEERS IN THE SELECTION OF AN INFORMATION SOURCE. 总被引:1,自引:0,他引:1
INVESTIGATED THE CRITERIA EMPLOYED BY ENGINEERS IN THE SELECTION OF VARIOUS TECHNICAL INFORMATION CHANNELS IN PROBLEM-SOLVING ENDEAVORS. FOCUSES ON THE RELATIONSHIPS OF CERTAIN CRITERIA IDENTIFIED IN PAST RESEARCH TO SUCH FACTORS AS FREQUENCY OF CHANNEL UTILIZATION AND THE RATE AT WHICH ENGINEERS ACCEPT OR REJECT TECHNICAL INFORMATION RECEIVED FROM SPECIFIC CHANNELS. A DIRECT RELATIONSHIP IS FOUND BETWEEN PERCEIVED ACCESSIBILITY OF INFORMATION CHANNELS AND SEVERAL OBJECTIVE MEASURES OF UTILIZATION, WHEREAS NO DEFINITE SUPPORT IS FOUND FOR THE HYPOTHESIS THAT THE CHANNELS PERCEIVED HIGHEST IN TECHNICAL QUALITY ARE THOSE USED MOST FREQUENTLY. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
58.
MEASURED VISUAL IMAGERY UNDER SENSORY RESTRICTION AND UNDER RHYTHMIC PHOTIC STIMULATION TO TEST THE HYPOTHESIS THAT HIGH VISUAL-IMAGERY INDIVIDUALS WOULD BE MORE SUSCEPTIBLE TO HYPNOSIS. SUPPORT FOR THE HYPOTHESIS WAS OBTAINED PRIMARILY FROM IMAGERY MEASURES THAT INSTRUCTED 784 STUDENTS TO TRY TO SEE CERTAIN SPECIFIED IMAGES. LITTLE SUPPORT WAS OBTAINED USING LESS PRESCRIPTIVE MEASURES TAPPING FREE, SPONTANEOUS IMAGERY. THE DIMENSIONS OF IMAGERY AND POSSIBLE SEX DIFFERENCES IN VISUAL IMAGERY WERE STUDIED. (29 REF.) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
59.
Hall effect sensors were used to determine residence time distributions for diced carrot particles in 4% Colflo 67 carrier fluid. Four sensors at either end of a 3.2 m long 2 in. IDF tube viscometer allowed residence times to be measured for carrot particles incorporating a ceramic magnet. Mean particle residence times were greater than mean bulk residence time for 8 mm diced carrots, whereas 15 mm carrots showed trials in which particles travelled faster than the bulk fluid. Increasing concentration of 15 mm diced carrots from 3.25, 6.30, 9.16 to 11.85% w/w resulted in decreasing mean particle residence times from 17.6, 17.0, 15.9 to 14.3 s, with minimum residence times of 16.4, 16.2, 14.8 and 13.4 s, respectively. This sensing technique operates through stainless steel, providing applications for UHT foods containing particles. In addition, the technique was not affected by high particle concentration, and will operate for any distribution of particle size, shape or type. 相似文献
60.
The functionality of butterfat can be improved by fractionation, a process that can be considered as enrichment of butterfat with long-chain saturated fatty acids. Model hard fractions were produced by adding tripalmitin to butterfat, in ratios from 0.9:0.1 through 0.1:0.9. The model system had very similar thermal behavior and mechanical properties to true fractions. The phase behavior of tripalmitin/butterfat mixtures was determined. Such butterfat fractions have potential as a moisture barrier in edible films and coatings. Tripalmitin-enriched butterfat is an alternative to hard butterfat fractions in some applications. 相似文献