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  • 1
    Electronic Resource
    Electronic Resource
    Gas-phase inorganic chemistry: laser spectroscopy of calcium and strontium monocarboxylates (1990)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 3543-3547 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100372a034
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  • 2
    Electronic Resource
    Electronic Resource
    Magnitude and pattern of skeletal response to long term continuous and cyclic sequential oestrogen/progestin treatment (1994)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 101 (1994), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To investigate the magnitude and pattern of the changes in bone mass during five years of continuous and cyclic sequential oestrogen/progestin treatment.Design Prospective study of normal, early postmenopausal women, initially a double-blind, placebo controlled trial, subsequently an open, controlled investigation.Setting Clinical physiology unit of a general hospital.Subjects Sixty-eight normal, early postmenopausal women.Results 1. Continuous treatment resulted in significantly higher lumbar spine bone density than did sequential treatment (P 〈 0.001). Lumbar spine bone density was 19% and 15%, respectively, above that of untreated women after three years and onwards, and 10% and 6%, respectively, above the initial value; 2. Both regimens induced a more pronounced rise in lumbar spine bone density than in forearm bone mineral content (P 〈 0.001); 3. The spontaneous decline (without treatment) in lumbar spine bone density and forearm bone mineral content averaged 1.86% and 1.90% per year, respectively. 4. There was a significant bone loss from the lumbar spine during the last year of active treatment (P 〈 0.001). This would suggest that lumbar spine bone density rises to a certain level and subsequently declines. However, neither data pooled before computation nor data processed individually for each patient over five years allowed for any definite conclusions regarding the pattern of the long term skeletal response to combined oestrogen/progestin treatment.Conclusion Five years treatment with oestradiol/norethisterone resulted in a substantial gain in bone mass. The highest values were found in the axial skeleton with daily administration of 2 mg oestradiol and 1 mg norethisterone. It is likely that bone mass after an absolute rise begins to decline after about four years of treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1994.tb13618.x
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  • 3
    Electronic Resource
    Electronic Resource
    Partial characterization of trypsin inhibitors and N-terminal sequences of five trypsin isoinhibitors of Great Northern beans (Phaseolus vulgaris) (1993)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 41 (1993), S. 1544-1549 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00034a003
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  • 4
    Electronic Resource
    Electronic Resource
    COMPARISON OF INVERTASE AND PECTINESTERASE INACTIVATION IN PROCESSED TOMATO PULP (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food quality 17 (1994), S. 0 
    Details
    ISSN: 1745-4557
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The heat stability of pectinesterase (PE) and invertase in tomato pulp was investigated to examine the feasibility of using invertase inactivation to predict pectinesterase inactivation. Both invertase and PE were inactivated at 80C in macerated tomato pulp. Between temperatures of 65C to 75C invertase was less heat stable than PE. Results indicate that when temperatures above 80C are reached, almost instantaneously, it would be feasible to use invertase activity as measured by sucrose level to predict PE activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4557.1994.tb00153.x
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  • 5
    Electronic Resource
    Electronic Resource
    Isolation and partial characterization of a soybean cystatin cysteine proteinase inhibitor of coleopteran digestive proteolytic activity (1991)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 39 (1991), S. 1515-1520 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00008a030
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  • 6
    Electronic Resource
    Electronic Resource
    Screening of heat-stable trypsin inhibitors in dry beans and their partial purification from Great Northern beans (Phaseolus vulgaris) using anhydrotrypsin-Sepharose affinity chromatography (1992)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 40 (1992), S. 32-42 
    Details
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jf00013a007
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  • 7
    Electronic Resource
    Electronic Resource
    Field investigations of ammonia exchange between barley plants and the atmosphere. II. Nitrogen realiocation, free ammonium content and activities of ammonium-assimilating enzymes in different leaves (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 16 (1993), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The activities of glutamine synthetase (GS) and glutamate synthase (GOGAT) in different leaves of field-grown spring barley were measured during the reproductive growth phase in 2 consecutive years. Concurrently, the contents of soluble ammonium ions and free amides in the leaves were determined. The studies were carried out to investigate the relationship between variations in these parameters and emission of NH3 from the plant foliage. GS and GOGAT activities declined very rapidly with leafage. The decline in enzyme activities was followed by an increase in soluble ammonium ions and amides in the leaf tissues. During the same period, about 75% of leaf and stem nitrogen was reallocated to the developing ear. The amount of NH3 volatilized from the foliage during the reproductive growth phase amounted to about 1% of the reallocated nitrogen. The experimental years were characterized by very favourable conditions for grain dry matter formation and for re-utilization of nitrogen mobilized from leaves and stems. Ammonia volatilization occurring under conditions with declining GS and GOGAT activities and increasing tissue concentrations of NH4+ may be useful in protecting the plant from accumulation of toxic NH3 and NH4+ concentrations in the tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1993.tb00858.x
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  • 8
    Electronic Resource
    Electronic Resource
    Field investigations of ammonia exchange between barley plants and the atmosphere. I. Concentration profiles and flux densities of ammonia (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant, cell & environment 16 (1993), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The exchange of ammonia between the atmosphere and the canopy of spring barley crops growing at three levels of nitrogen application (medium N, high N and excessive N) was studied over two consecutive growing seasons by use of micrometeorological techniques. In most cases, ammonia was emitted from the canopy to the atmosphere. The emission started around 2 weeks before anthesis, and peaked about or shortly after anthesis. The volatilization of ammonia only took place in the daytime. During the night-time, atmospheric ammonia was frequently aborbed by the canopy. Occasionally, plants in the medium and high N treatments also absorbed ammonia from the atmosphere during the daytime. Daytime absorption of ammonia never occurred in the excessive N canopy. The loss of ammonia from the canopy amounted in both years to 0.5–1.5 kg NH3-N ha−1 and increased with the N status of the canopy. In agreement with the small losses of ammonia, the content of 15N-labelled nitrogen in the plants did not decline during the grain-filling period. The experimental years were characterized by very favourable conditions for grain dry matter formation, and for re-utilization of nitrogen mobilized from leaves and stems. Consequently, a very high part of the nitrogen in the mature plants was located in grain dry matter (80–84% in 1989; 74–80% in 1990). The efficient re-utilization of nitrogen may have reduced the volatilization of ammonia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.1993.tb00857.x
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  • 9
    Electronic Resource
    Electronic Resource
    Formation temperatures determined from stochastic inversion of borehole observations (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 101 (1990), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Bottom Hole Temperature (BHT) observations are generally influenced by drilling-induced thermal disturbances which must be corrected for. This paper presents a correction method based on a 1-D conductive finite element model and an inverse procedure for parameter estimation. While the technique may be applied to any section of the borehole this paper focuses on the correction of bottom hole temperatures.Model parameters are mud temperature during drilling and circulation at the depth of BHT observations, borehole radius, thermal parameters of mud and formation, and the equilibrium formation temperature. Data are one or more successive BHTs and their standard deviations.Prior to inversion the model parameters are assigned reasonable values and standard deviations that reflect the confidence in those values. A high level of confidence implies small standard deviations and vice versa.The process of inversion extracts the most likely values of all free parameters including the equilibrium formation temperature. Furthermore, the initial uncertainties in all parameters and data are propagated into uncertainties in the final parameter estimates. The formation temperature estimate is an unbiased estimate of the true formation temperature when the a priori parameter estimates and their standard deviations are consistent with the actual physical conditions in the borehole and the formation.The method on average yields 5–10 per cent higher equilibrium temperature estimates than does the Horner plot method and displays a strong consistency with temperature obtained during production tests. This is of importance to the understanding of terrestrial heat flow density patterns, and thermal structure of sedimentary basins, and to the modelling of hydrocarbon generation. The theory and results from the processing of 41 BHT series from 27 industrial wells in the North Sea Central Graben are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1990.tb05572.x
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  • 10
    Electronic Resource
    Electronic Resource
    Lactose Crystallization from Whey Permeate in an Ethanol-Water Mixture (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A 30% concentrated permeate of a whey ultrafiltration process was used for producing crystalline a-lactose monohydrate. Effect of pH (2.75–5.5 pH units) at solvent to solute ratio 10:1 v/w, agitation and seeding (0.004–0.02%) on rate of lactose crystallization were examined. Conditions which were favorable in terms of crystallized lactose yield, and time of crystallization were: pH 5.5, agitation with or without seeding and 22°C. The first-order reaction-rate constant for crystallization ranged from 0.0178 to 0.200 hr−1 depending on conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb14609.x
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