The resilience of a floodplain vegetation landscape     

Shilpakar  Rajendra L.  Thoms  Martin C.  Reid  Michael A. 《Landscape Ecology》2021,36(1):139-157

Landscape Ecology - Floodplains are complex adaptive ecosystems that provide an array of ecosystem services. Despite the growing focus on resilience as a fundamental feature of floodplain...  相似文献   

Target cells for 1,25-dihydroxyvitamin D3 in intestinal tract, stomach, kidney, skin, pituitary, and parathyroid   总被引：21，自引：0，他引：21  

W E Stumpf  M Sar  F A Reid  Y Tanaka  H F DeLuca 《Science (New York, N.Y.)》1979,206(4423):1188-1190

After mature rats that had been fed on a vitamin D3-deficient diet were injected with tritium-labeled 1,25-dihydroxyvitamin D3, radioactivity became concentrated in nuclei of luminal and cryptal epithelium of the duodenum, jejunum, ileum, and colon; in nuclei of the epithelium of kidney distal tubules including the macula densa, and in podocytes of glomeruli; in nuclei of the epidermis including outer hairshafts and sebaceous glands; and in nuclei of certain cells of the stomach, anterior and posterior pituitary, and parathyroid. These results reveal cell types that contain receptors for 1,25-dihydroxyvitamin D3 or metabolites of this compound both in known or hypothesized target tissues and in tissues that were previously unknown to participate in vitamin D3 metabolism.  相似文献   

Ecological forecasts: an emerging imperative   总被引：1，自引：0，他引：1  

Clark JS  Carpenter SR  Barber M  Collins S  Dobson A  Foley JA  Lodge DM  Pascual M  Pielke R  Pizer W  Pringle C  Reid WV  Rose KA  Sala O  Schlesinger WH  Wall DH  Wear D 《Science (New York, N.Y.)》2001,293(5530):657-660

Planning and decision-making can be improved by access to reliable forecasts of ecosystem state, ecosystem services, and natural capital. Availability of new data sets, together with progress in computation and statistics, will increase our ability to forecast ecosystem change. An agenda that would lead toward a capacity to produce, evaluate, and communicate forecasts of critical ecosystem services requires a process that engages scientists and decision-makers. Interdisciplinary linkages are necessary because of the climate and societal controls on ecosystems, the feedbacks involving social change, and the decision-making relevance of forecasts.  相似文献   

Response: the myeloperoxidase gene in acute promyelocytic leukemia     

Weil SC  Reid MS  Nilles LA  Chisholm RL  Rosner GL  Swanson MS  Carrino JJ  Diaz MO  LE Beau MM 《Science (New York, N.Y.)》1989,244(4906):825-826

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The opioid peptide dynorphin, circadian rhythms, and starvation   总被引：2，自引：0，他引：2  

R Przew?ocki  W Lasón  A M Konecka  C Gramsch  A Herz  L D Reid 《Science (New York, N.Y.)》1983,219(4580):71-73

Dynorphin, an opioid peptide whose functions are unknown, is found in brain, pituitary, and peripheral organs. Specific radioimmunoassays were used to measure dynorphin in the hypothalamus and pituitary, during the day and at night, as a function of food and water deprivation. Immunoreactive dynorphin was increased in the hypothalamus and decreased in the pituitary at night. Water deprivation led to more than 50 percent reduction in daytime levels of pituitary dynorphin and concomitant increases in hypothalamic dynorphin.  相似文献   

The relationship between the rate of melatonin excretion and sleep consolidation for locomotive engineers in natural sleep settings     

Gregory D Roach  Kathryn J Reid  Sally Ferguson  Drew Dawson 《Journal of circadian rhythms》2006,4(1):8-5

Background  

The aim of the study was to examine the role that melatonin production plays in the regulation of sleep consolidation in a population of shiftworkers working and sleeping in their natural environments.  相似文献   

CD21 B cell populations are altered following subcutaneous scrapie inoculation in sheep     

Samantha L. Eaton  Mary-Jo Anderson  Scott Hamilton  Lorenzo Gonzlez  Jill Sales  Martin Jeffrey  Hugh W. Reid  Mara S. Rocchi  Francesca Chianini 《Veterinary immunology and immunopathology》2009,131(1-2):105-109

In order to gain a better understanding of the pathogenesis of scrapie in sheep an experimental model was developed to characterise immune system cells in the minutes following inoculation with scrapie-brain homogenate. Four 1-year-old susceptible (ARQ/ARQ) sheep were inoculated via the subcutaneous route at four different peripheral lymph node (LNs) drainage sites, at specific time points, prior to euthanasia of the sheep. The LNs were removed post-mortem at 30, 90, 180 and 300 min after inoculation. Flow cytometric triple-labelling was carried out on the LN cells and indicated that inoculation of scrapie-brain homogenate adjacent to a lymph node may delay or even inhibit the number of host CD21⁺ B cells expressed within the first 5 h. Immunohistochemistry was used to attempt detection of the abnormal form of prion protein (PrP^sc) in draining LNs adjacent to inoculation sites, with negative results at those time points.  相似文献   

Comparison of bacteriology and cytology of tracheal fluid samples collected by percutaneous transtracheal aspiration or via an endoscope using a plugged, guarded catheter.     

R M Christley  D R Hodgson  R J Rose  S W Reid  J L Hodgson 《Equine veterinary journal》1999,31(3):197-202

Cytological and bacteriological results from tracheal fluid samples obtained endoscopically using a telescoping, plugged catheter (TPC) were compared with results from samples collected by percutaneous transtracheal aspiration (PTA). The TPC technique and PTA were performed in random order on 9 healthy Standardbred geldings. Three weeks later the procedures were performed on the same horses in the reverse order. The presence of oropharyngeal contamination was determined by quantitative bacteriology and quantification of squamous epithelial cells (SEC)/ml sample. The relative numbers of macrophages, haemosiderophages, giant cells, neutrophils, lymphocytes and eosinophils did not differ between techniques. The number of SEC/ml was greater in samples with more colony forming units/ml indicating that quantification of SEC provides evidence of the probable degree of oropharyngeal contamination. Fifteen out of the 18 TPC samples were free of contamination, indicating that the TPC can provide adequate samples for bacteriology. The results also indicate that tracheoscopy sometimes results in oropharyngeal contamination of the trachea, but that this does not affect the results of the TPC sample.  相似文献   

Viral haemorrhagic septicaemia virus IVb experimental infection of rainbow trout,Oncorhynchus mykiss (Walbaum), and fathead minnow,Pimphales promelas (Rafinesque)     

L Al‐Hussinee  P Huber  S Russell  V LePage  A Reid  K M Young  E Nagy  R M W Stevenson  J S Lumsden 《Journal of fish diseases》2010,33(4):347-360

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Effects of Rough Rice Storage Conditions on the Amylograph and Cooking Properties of Medium-Grain Rice cv. Bengal     

A. A. Perdon  B. P. Marks  T. J. Siebenmorgen  N. B. Reid 《Cereal Chemistry》1997,74(6):864-867

Rough rice (cv. Bengal) was stored at four moisture contents (8.8, 10.7, 12.9, and 13.6% MC) and three temperatures (3, 20, and 37°C) for up to six months. The amylograph overall paste viscosity of the milled rice increased during storage. This increase was most apparent in all samples stored at 37°C. For rice stored at 20 and 37°C at all MC levels, a 30–50% increase in peak viscosity (PV) was observed during the first three months of storage. PV subsequently leveled off for rice stored at 12.9 and 13.6% MC but declined for samples stored at 8.8 and 10.7% MC. The final viscosities also increased during storage. The water-absorption ratio of the samples during cooking in excess water increased by an average of 15% over six months of storage. The amylograph and cooking properties were significantly affected (P < 0.05) by rough rice storage duration, temperature, MC, and their respective interactions.  相似文献