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1.
This study extends the literature on eating disorder symptomatology by testing, based on extant literature on objectification theory (B. L. Fredrickson & T. Roberts, 1997) and the role of sociocultural standards of beauty (e.g., L. J. Heinberg, J. K. Thompson, & S. Stormer, 1995), a model that examines (a) links of reported sexual objectification experiences to eating disorder-related variables and (b) the mediating roles of body surveillance, body shame, and internalization of sociocultural standards of beauty. Consistent with hypotheses, with a sample of 221 young women, support was found for a model in which (a) internalization of sociocultural standards of beauty mediated the links of sexual objectification experiences to body surveillance, body shame, and eating disorder symptoms, (b) body surveillance was an additional mediator of the link of reported sexual objectification experiences to body shame, and (c) body shame mediated the links of internalization and body surveillance to disordered eating. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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H. F. C. Hoevers M. P. Bruijn B. P. F. Dirks L. Gottardi P. A. J. de Korte J. van der Kuur A. M. Popescu M. L. Ridder Y. Takei D. H. J. Takken 《Journal of Low Temperature Physics》2008,151(1-2):94-99
Seven microcalorimeters with different geometries have been tested and their performance is compared. The study, for TiAu
TESs with a Cu absorber, indicates the presence of so-called constant voltage noise and internal thermal fluctuation noise.
The constant voltage noise is not changed by a normal metal pattern on the TES, or by a magnetic field. The energy resolution
of the detectors, having different heat capacities, is 2.5 and 5.0 eV (at 5.9 keV).
相似文献
4.
Uwe Dirks und Ernst H. Reimerdes 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1986,183(2):101-104
Zusammenfassung Es wurde die enzymatische Harnstoff-Bestimmung in Sprühmagermilchpulvern auf ein rechnergesteuertes photometrisches Analysensystem übertragen. Die einfach zu handhabende Probenvorbereitung verleiht dem Analysensystem einen hohen Grad an Rationalität. Die flüssigen Proben wurden direkt oder nach Ultrafiltration für die Harnstoff-Bestimmung eingesetzt. Die Wiederholbarkeit bei der Probenvorbereitung ausgedrückt als Variationskoeffizient betrug im Mittel 0,69%, die Standardabweichung bei aufeinanderfolgenden Testansätzen 0,115–0,135 bei einem durchschnittlichen Gehalt von 5,4–5,5 mg Harnstoff/100 ml Magermilch. Die Methode wurde an einem umfangreichen Probenmaterial von 147 Magermilchpulvern, die nach saisonalen (Januar bis Oktober) Kriterien ausgewählt wurden, erprobt. Es wurde auf diese Weise ein breiter Überblick über die jahreszeitabhängigen Harnstoffgehalte in Sprühmagermilchpulvern unterschiedlicher Herkunft erhalten. Die Harnstoffgehalte sind von Februar bis Mai nahezu konstant (0,25–0,26%), steigen von Juni bis Oktober aber auf Werte von 0,32% an.
Herrn Professor Dr. Dr. Andreas Lembke, Institut für Virusforschung und experimentelle Medizin, D-2420 Eutin-Siebek zum 75. Geburtstag gewidmet. 相似文献
A rapid computer aided method for the determination of urea in dairy products — skim milk powder
Summary The enzymatic determination of urea in spray-dried skim milk powders was transferred to a computer aided photometric analysing system. Sample preparation is optimal using ultrafiltration, but the direct use of a milk sample is also possible with this system. The precision including sample preparation as coefficient of variation was about 0.69%, the standard deviation of the assay was 0.115–0.135 at an average content of 5.4–5.5 mg urea per 100 ml skim milk. The method was tested on 147 spray-dried skim milk powders, which were of varying origin and collected at different times of the year (Jan.-Oct.). In this way a representative survey for the urea content of a great number of skim milk powders was possible. It was also shown, that the urea content is highly affected by season. It is very constant from February to May (0.25–0.26%), and rises from June to October up to nearly 0.32%.
Herrn Professor Dr. Dr. Andreas Lembke, Institut für Virusforschung und experimentelle Medizin, D-2420 Eutin-Siebek zum 75. Geburtstag gewidmet. 相似文献
5.
Stephanie Große-Wächter und Uwe Dirks 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1991,193(4):344-346
Zusammenfassung Vorgestellt wird eine HPLC-Methode zur Bestimmung von Aspartam und seinem Cyclisierungsprodukt Diketopiperazin in verschiedenen kakao-,emulgator- und verdickungsmittelhaltigen Dessert-Pulvern. Das Verfahren zeichnet sich durch gute Reproduzierbarkeit und hohe Wiederfindungsraten aus. Das Ausmaß der Bildung von Diketopiperazin bzw. des Abbaus von Aspartam nach der Zubereitung von Desserterzeugnissen unter Wärmeeinwirkung wird über HPLC ermittelt. In sauren Desserts (pH 3) auf Gelatinebasis wurde keine Bildung von Diketopiperazin festgestellt, während in kakao- und milchhaltigen Desserts von pH 6 ein 20–35%iger Abbau von Aspartam beobachtet wurde.
Determination of aspartame and its degradation product, diketopiperazine, in desserts by high-performance liquid chromatography. Investigations on heat stability of aspartame
Summary A high-performance liquid chromatography (HPLC) method is described to determine aspartame and its degradation product, diketopiperazine (DKP), in various cacao powder, emulsifier and thickening agents containing dessert powders with improved reproducibility and a high recovery rate. Moreover, the extent of the formation of DKP and the degradation of aspartame in heat-treated dessert products were investigated by means of HPLC. In acidified (pH 3) gelatin-based desserts no formation of DKP was observed at all, whereas in dessert products containing milk or cacao with pH 6, the degradation of aspartame rose to 20–35%.相似文献
6.
The ultramicrohardness of thin alloy films is determined by indentation experiments at very low loads. The indentation apparatus is briefly described. We measured the hardness of a number of pure metal films, either vapour deposited or magnetron sputtered. In addition, a detailed study was made of the composition dependence of the hardness of the six binary alloy systems of AgAuCu and AuCoNi. These films were prepared by high vacuum vapour deposition. The thickness of all the films was 1 μm.The hardness data were interpreted with the help of the metastable alloy phase diagram, e.g. as obtained by transmission electron microscopy. The results are discussed in terms of the blocking of the motion of dislocations, solid solution hardening, compound formation, grain size reduction due to alloying, and differences in atomic radii. 相似文献
7.
McLaren P.G. Swift G.W. Neufeld A. Zhang Z. Dirks E. Haywood R.W. 《Power Delivery, IEEE Transactions on》1994,9(3):1316-1324
This paper describes a development in relaying hardware and philosophy which has been made possible by DSPs and industrial grade PCs. Details are given of a prototype design capable of being assembled and configured by a utility and results of tests on this prototype using the RTDS at the Manitoba HVDC Research Centre are presented. The project is a joint effort between the University of Manitoba and Manitoba Hydro 相似文献
8.
Previous studies have indicated the existence of natriuretic factors of hormonal nature with the posterior pituitary gland as a possible site of origin. It was in this light that a series of experiments was designed to examine the posterior pituitary for such factors. Acetic acid extracts of porcine and bovine posterior pituitary lobe tissue were subjected to gel filtration on Sephadex G-25. Several fractions in the molecular size range of 1000 were obtained which possessed potent natriuretic activity as assayed in rats. The activity of these fractions maximally increased sodium excretion to 6-8 muequiv./min, a 10- to 40-fold increase above control, when administered intraperitoneally to hydropenic, conscious rats. However, oxytocin and vasopressin, present in the posterior pituitary are natriuretic. These hormones were measured by radioimmunoassay, and invariably only those fractions which contained vasopressin and (or) oxytocin possessed natriuretic activity. Moreover, the extent of the natriuresis could be accounted for by the vasopressin and (or) oxytocin content of the test fractions. The natriuretic property of this material was abolished by treatment with thioglycollate. Further purification of natriuretic fractions by ion exchange resins, thin-layer chromatography and isoelectric focusing failed to resolve natriuretic activity from vasopressin and oxytocin. Similar results were observed following analysis of fractions isolated by gel filtration of acetic acid extracts of ventral hypothalamus tissue. The natriuretic fractions isolated from hypothalamic tissue were indistinguishable from oxytocin and vasopressin. These experiments suggest that the natriuretic activity in neurohypophyseal extracts can be attributed to oxytocin and vasopressin. 相似文献
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RP Dirks ST Van Genesen JJ KrUse L Jorissen NH Lubsen 《Canadian Metallurgical Quarterly》1998,66(2):267-269
A pregnant patient at 38 weeks' gestation developed symptoms of local anaesthetic toxicity following intravenous regional anaesthesia (IVRA) for hand surgery, using a standard dose of lignocaine. Reports suggest that a number of factors, both physiological and pharmacological, combine to increase the likelihood of local anaesthetic (LA) toxicity in pregnancy despite employment of a conventional "safe" IVRA technique. It is suggested that for IVRA, pregnant patients are premedicated with a benzodiazepine, the tourniquet time is increased and the concentration of LA is decreased to reduce the risks of LA toxicity. 相似文献