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  • 1
    Electronic Resource
    Electronic Resource
    A comparison, under controlled environmental conditions, of a Lolium multiflorum selection bred for high dry-matter content and non-structural carbohydrate concentration with a commercial cultivar (2002)
    Oxford, UK : Blackwell Science Ltd
    Grass and forage science 57 (2002), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The nutritional value of Italian ryegrass (Lolium multiflorum) selection 121, bred for a high dry-matter content and a high concentration of total non-structural carbohydrate (TNC), was compared with that of Westerwolds ryegrass (L. multiflorum ssp. Westerwoldicum) cv. Midmar in a controlled environment. The concentration of neutral-detergent fibre (NDF), acid-detergent fibre (ADF), acid-detergent lignin (ADL), nitrogenous compounds, minerals and in vitro digestibility were investigated as characteristics of nutritive value. The anatomical features of selection 121 and the Midmar cultivar were studied to determine possible structural differences. Thirty pots each of selection 121 and Midmar containing four plants per pot were arranged in a randomized block design in a controlled environment chamber. There were two temperature regimes during the study, the first being a warm regime (30 °C/20 °C) for 7 weeks followed by a cold regime(20 °C/7 °C) of a further 7 weeks. In the warm regime, the dry-matter (DM) content and the TNC concentration of selection 121 were 0·17 and 0·16 higher, respectively, than Midmar. The NDF concentration was significantly (P 〈 0·01) higher in Midmar than in selection 121. When grown under warm conditions, Midmar had significantly (P 〈 0·001) higher concentrations of Mg, K, Na and Mn than selection 121. In the cold regime, the DM content and TNC concentration of selection 121 were 0·25 and 0·22 higher, respectively, than Midmar. No significant differences in the anti-quality factors investigated were found between the two ryegrasses. In the cold regime, Midmar had significantly (P 〈 0·001 and P 〈 0·01) higher Ca, Mg, K, Na, Zn, Mn and P concentrations than selection 121. The results from this controlled environment study suggest that selection 121 is superior to Midmar in terms of the quality characteristics DM and TNC, and that these characteristics are not positively linked to anti-quality factors associated with forage species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2494.2002.00337.x
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  • 2
    Electronic Resource
    Electronic Resource
    Gate tunneling current in In0.53Ga0.47As junction field-effect transistors (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 60 (1992), S. 1588-1590 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Band-to-band tunneling leakage current is identified as the dominant source of dark current leakage at the gates of In0.53Ga0.47As/InP junction field-effect transistors (FETs) optimized for use in linear, optoelectronic integrated circuit applications. Both the temperature and voltage dependencies of the gate leakage in such devices is studied, and the results are in agreement with calculations based on the FET two-region model modified to include the effects of tunneling. Due to the fundamental nature of this leakage mechanism, and due to the fact that gate leakage induces shot noise, these results suggest that both low noise and high gain can be achieved by limiting the channel doping to ∼9×1016 cm−3 for FETs operated at a frequency of 1 GHz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107260
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  • 3
    Electronic Resource
    Electronic Resource
    Electrofusion of Protoplasts and Heterokaryon Survival in the Genus Medicago (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 101 (1988), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: To develop a system of clectrofusion for the genus Medicago, protoplast yields from 2 genotypes of M, sativa and 7 wild type1 accessions were determined. Protoplast extraction protocols from mesophyll cells, from suspension culture and from calls were evaluated. An alternating current of 10 volts an a frequency of 150 mhz was applied to tht1 protoplasts Ho align them in a pearl chain formation. A direct current pulse of 150 volts applied for 0.25 usec gave the highest number of protoplast fusions for material from mesophyll cells and suspension culture for both M. sativa and wild species. Over 20% of the protoplasts which occupied places in the “pearl chains” yielded fusion products. An average of 25% of the protoplasts treated with an electrical fusion pulse survived, started, to regenerate cell walls and to divide after a 12 days interval. This system can be used to produce new hybrids which, previously, could not be made in the genus Medicago.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1988.tb00279.x
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  • 4
    Electronic Resource
    Electronic Resource
    The Estimation of Flood-Response Times from Digital Catchment Data (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 14 (2000), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: The UK Flood Estimation Handbook describes a new approach to flood peak estimation and includes a volume which summarises developments in the rainfall-runoff method since its publication in the Flood Studies Report in 1975.One of the improvements has been the construction of a new unit hydrograph time-to-peak estimation equation. The handbook illustrates how information from digital datasets can be used to compute a number of catchment descriptors which, taking the place of information abstracted manually from Ordnance Survey maps, are introduced as independent variables. The new equation is obtained from an enlarged database consisting of 1822 rainfall-runoff events which incorporate a greater variety of catchments than were used in the Flood Studies Report.This paper (a) summarises the extent of the research, (b) outlines the steps involved, and (c) recommends an equation for estimating unit hydrograph time-to-peak from digital catchment data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.2000.tb00270.x
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  • 5
    Electronic Resource
    Electronic Resource
    Inflammatory pseudotumour (inflammatory myofibroblastic tumour) of the pancreas: a report of six cases associated with obliterative phlebitis (2001)
    Oxford, UK : Blackwell Science Ltd
    Histopathology 38 (2001), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To describe in detail an uncommon pancreatic condition, which generally presents with cholestasis and a mass lesion suspicious of malignancy, and which is characterized histologically by proliferation of fibrous tissue with associated moderate or marked inflammation, as well as obliterative phlebitis.〈section xml:id="abs1-2"〉〈title type="main"〉Methods and results:Out of a consecutive series of 23 pancreaticoduodenectomy specimens which on histological evaluation were found to contain no malignant tumour, six cases characterized by the features mentioned above were identified and investigated further. Poor circumscription, firm consistence, histology of dense sclerosis with scattered round cell infiltrates and associated obliterative phlebitis and often perineural accentuation of inflammation were the distinguishing features. On the basis of available histoloigical evidence, the term inflammatory pseudotumour perhaps remains the term best suited to designate this entity, since it sums up its two most distinctive features. However, the possibility that this lesion is in fact a neoplastic process with reactive inflammation (inflammatory myofibroblastic tumour) cannot be ruled out on the basis of the histology, and remains a serious consideration in view of the proven neoplastic nature of lesions with very similar histology arising elsewhere in the body. Importantly, none of the pancreatic lesions reported here recurred or progressed (five informative cases, median follow-up time 70 months).〈section xml:id="abs1-3"〉〈title type="main"〉Conclusions:Inflammatory pseudotumour (inflammatory myofibroblastic tumour) of the pancreas may closely mimic pancreatic adenocarcinoma clinically and radiologically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2559.2001.01056.x
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  • 6
    Electronic Resource
    Electronic Resource
    Chrysophanus Dispar (1869)
    [s.l.] : Nature Publishing Group
    Nature 1 (1869), S. 193-193 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] You ask for information about Chrysophanus Dispar. The statement that it has been met with in Kerry is not in itself improbable, and entomologists will be interested in having it confirmed; but when we find it said in the same paragraph that the insect is not uncommon in England, it will be ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/001193b0
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  • 7
    Electronic Resource
    Electronic Resource
    Detection of irradiated food (1989)
    [s.l.] : Nature Publishing Group
    Nature 340 (1989), S. 23-24 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Thermoluminescence (TL) is one of several phenomena being investigated to develop reliable methods for identifying irradiated foods. Repeated reports1'5 have claimed that herbs and spices them-selves exhibit TL; and this has been proposed as the basis for official testing in West Germany. Our ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/340023b0
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  • 8
    Electronic Resource
    Electronic Resource
    Plasma concentration of C-reactive protein is increased in Type I diabetic patients without clinical macroangiopathy and correlates with markers of endothelial dysfunction: evidence for chronic inflammation (1999)
    Springer
    Diabetologia 42 (1999), S. 351-357 
    Details
    ISSN: 1432-0428
    Keywords: Keywords Type I (insulin-dependent) diabetes mellitus ; acute-phase response ; C-reactive protein ; atherosclerosis ; inflammation ; vascular disease ; α1-acid glycoprotein ; fucosylation.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Moderately increased plasma concentrations of C-reactive protein are associated with an increased risk of cardiovascular disease. C-reactive protein, its relation to a low degree of inflammatory activation and its association with activation of the endothelium have not been systematically investigated in Type I (insulin-dependent) diabetes mellitus. C-reactive protein concentrations were measured in 40 non-smoking patients with Type I diabetes without symptoms of macrovascular disease and in healthy control subjects, and in a second group of Type I diabetic patients (n = 60) with normo- (n = 20), micro- (n = 20) or macroalbuminuria (n = 20). Differences in glycosylation of α1-acid glycoprotein were assayed by crossed affinity immunoelectrophoresis. Activation of the endothelium was measured with plasma concentrations of endothelial cell markers. The median plasma concentration of C-reactive protein was higher in Type I diabetic patients compared with healthy control subjects [1.20 (0.06–21.64) vs 0.51 (0.04–9.44) mg/l; p 〈 0.02]. The Type I diabetic subjects had a significantly increased relative amount of fucosylated α1-acid glycoprotein (79 ± 12 % vs 69 ± 14 % in the healthy control subjects; p 〈 0.005), indicating a chronic hepatic inflammatory response. In the Type I diabetic group, log(C-reactive protein) correlated significantly with von Willebrand factor (r = 0.439, p 〈 0.005) and vascular cell adhesion molecule-1 (r = 0.384, p 〈 0.02), but not with sE-selectin (r = 0.008, p = 0.96). In the second group of Type I diabetic patients, increased urinary albumin excretion was associated with a significant increase of von Willebrand factor (p 〈 0.0005) and C-reactive protein (p = 0.003), which were strongly correlated (r = 0.53, p 〈 0.0005). Plasma concentrations of C-reactive protein were higher in Type I diabetic patients without (clinical) macroangiopathy than in control subjects, probably due to a chronic hepatic inflammatory response. The correlation of C-reactive protein with markers of endothelial dysfunction suggests a relation between activation of the endothelium and chronic inflammation. [Diabetologia (1999) 42: 351–357]
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001250051162
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  • 9
    Electronic Resource
    Electronic Resource
    Induction of freezing tolerance in alfalfa cell suspension cultures (1985)
    Springer
    Plant cell reports 4 (1985), S. 15-18 
    Details
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of ABA, 2,4-D, kinetin and cold exposure on the cold hardiness of Medicago sativa L. cell suspensions were investigated. Cultures treated with 5×10−5 M ABA at 2°C for 4 weeks in the absence of kinetin showed a 50% survival after freezing to −12.5°C, whereas cultures grown at 25°C under normal conditions tolerated freezing to only −3°C. The optimum ABA treatment of 5×10−5 M for 4 weeks was effective only in combination with cold exposure. Of six cell lines tested, all showed different degrees of induced cold hardiness. The results suggest that ABA alone cannot induce freezing tolerance on alfalfa cell suspension cultures and that the deletion of kinetin and combination of low temperature and ABA is critical for the induction of cold hardiness in alfalfa cell suspension cultures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285495
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  • 10
    Electronic Resource
    Electronic Resource
    Messenger-RNA and protein changes associated with induction ofBrassica microspore embryogenesis (1991)
    Springer
    Planta 184 (1991), S. 161-165 
    Details
    ISSN: 1432-2048
    Keywords: Brassica (microspore embryogenesis) ; Embryogenesis (induction in microspores) ; Microspore embryogenesis ; mRNA in microspore embryogenesis ; Protein in microspore embryogenesis ; Stress and microspore embryogenesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Brassica napus L. microspores at the late uninucleate to early binucleate stage of development can be induced in vitro to alter their development from pollen to embryo formation. High temperatures or other stress treatments are required to initiate this redirection process. The critical period for induction of microspore embryogenesis is within the first 8 h of temperature-stress imposition. During this period, which precedes the first embryogenic nuclear division, the process regulating the induction and sustainment of microspore embryogenesis is activated. A number of mRNAs and proteins, some of them possibly heat-shock proteins, appear in microspores during the commitment phase of the induction process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01102414
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