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  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 1989
    In:  Journal of Travel Research Vol. 28, No. 1 ( 1989-07), p. 39-40
    In: Journal of Travel Research, SAGE Publications, Vol. 28, No. 1 ( 1989-07), p. 39-40
    Abstract: This study examined what impact, if any, the Yellowstone National Park fires of 1988 will have on future visitation to the park. Both on- and off-site surveys suggested that visitation levels to Yellowstone in both near and long term are likely to remain about the same or increase.
    Type of Medium: Online Resource
    ISSN: 0047-2875 , 1552-6763
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1989
    detail.hit.zdb_id: 2036634-6
    SSG: 14
    SSG: 3,2
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  • 2
    In: The Holocene, SAGE Publications, Vol. 4, No. 1 ( 1994-03), p. 89-100
    Abstract: Changes in the distribution of sub-alpine tree species in western North America have been attributed to climatic change and other environmental stresses. These changes include tree-line fluctuations throughout the Holocene and recent invasion of sub-alpine meadows by forest. Most palaeoecological studies suggest that the tree-line was higher during a period of warmer climate approximately 9000 to 5000 BP and lower during the last 5000 years, with short periods of local tree-line advance. Recent advances in sub-alpine tree distribution can be compared with weather records, allowing an examination of relationships between tree advance and climate at a finer resolution. In general, recent sub-alpine forest advances in western North America, based on studies representing three climatic zones (maritime, Mediterranean and continental), have been associated with climatic periods favouring tree germination and growth, although factors such as fire and grazing by domestic livestock have had an impact in some areas. Limitations to tree establishment (e.g., winter snow accumulation, summer drought) vary in relative importance within each climate zone, as do predicted consequences of anthropogenic climatic change. Recent increases in establishment of sub-alpine trees may continue if climatic change alleviates the limitations to tree establishment important in each climatic zone. However, factors such as topography and disturbance may modify tree establishment on a local scale.
    Type of Medium: Online Resource
    ISSN: 0959-6836 , 1477-0911
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1994
    detail.hit.zdb_id: 2027956-5
    SSG: 14
    SSG: 3,4
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 1991
    In:  The Holocene Vol. 1, No. 1 ( 1991-03), p. 50-61
    In: The Holocene, SAGE Publications, Vol. 1, No. 1 ( 1991-03), p. 50-61
    Abstract: Basal area growth trends were determined for ponderosa pine (Pinus ponderosa) in the Sierra Nevada, California, USA, to: (1) evaluate long term growth patterns, and (2) determine if there has been any recent change in the frequency of growth changes outside the expected range of natural variability. Ponderosa pine was sampled in 56 stands with the sample divided equally between sites with and without documentation of symptomatic ozone injury. Basal area increment growth was calculated, temporal growth patterns were evaluated for each tree using time series analysis techniques, and changes in growth trends were summarized for each site by decade. There were several regional growth trends during this century, including a large number of growth decreases in the 1920s and a large number of increases in the 1930s. Many trends were synchronous within stands but were less frequently synchronous between stands. There were significant growth reductions since 1950 in some stands in the southern Sierra. These growth reductions occurred in areas with the highest levels of ozone exposure and needle injury. There was no evidence, however, of significant numbers of recent growth reductions for the entire Sierra Nevada region. Some sites had growth changes possibly associated with stand dynamics, management practices, and pathogens.
    Type of Medium: Online Resource
    ISSN: 0959-6836 , 1477-0911
    RVK:
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1991
    detail.hit.zdb_id: 2027956-5
    SSG: 14
    SSG: 3,4
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2000
    In:  NIR news Vol. 11, No. 2 ( 2000-04), p. 10-12
    In: NIR news, SAGE Publications, Vol. 11, No. 2 ( 2000-04), p. 10-12
    Type of Medium: Online Resource
    ISSN: 0960-3360 , 1756-2708
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2000
    detail.hit.zdb_id: 2273669-4
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 1991
    In:  The Occupational Therapy Journal of Research Vol. 11, No. 2 ( 1991-03), p. 93-105
    In: The Occupational Therapy Journal of Research, SAGE Publications, Vol. 11, No. 2 ( 1991-03), p. 93-105
    Abstract: The long tradition of experiments that compare the relative benefits of competition and cooperation is relevant to research and theory development in occupational therapy. In this study, three-subject groups structured for competition were compared to three-subject groups structured for cooperation in terms of subsequent productivity (task accomplishment). Thirty-six males (8 to 17 years old) residing in a treatment facility for non-psychotic psychosocial disorders participated in both competitive and cooperative dice games after random assignment to counterbalanced orders. After each dice game, subsequent group productivity was assessed by counting the number of correctly modeled pieces in a tinker toy task. Results did not support the hypothesis that a cooperative experience would enhance subsequent group productivity. On the contrary, a Mann-Whitney U test approached statistical significance (U = 38.5, p = .053) in favor of the group productivity of the post-competition condition. Suggestions are made for future study of the possible advantages and disadvantages of competition and cooperation.
    Type of Medium: Online Resource
    ISSN: 0276-1599
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1991
    detail.hit.zdb_id: 2221257-7
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  • 6
    Online Resource
    Online Resource
    SAGE Publications ; 2008
    In:  Toxicologic Pathology Vol. 36, No. 1 ( 2008-01), p. 117-132
    In: Toxicologic Pathology, SAGE Publications, Vol. 36, No. 1 ( 2008-01), p. 117-132
    Abstract: Laser scanning cytometry (LSC) is a powerful tool for qualitative and quantitative analysis of tissue sections in preclinical drug development. LSC combines the strengths of flow cytometry with tissue architecture retention. This technology has been used predominantly with immunofluorescent techniques on cell culture and tissue sections, but recently LSC has shown promise in evaluating chromogenic immunohistochemistry (IHC) and histochemical products in paraffin-embedded and/or frozen tissue sections. Inverted light scatter measurements or a combination of inverted scatter and fluorescence allows automated determination of cell/nuclear counts (e.g., proliferation labeling indices), cell area (e.g., cellular hypertrophy), stromal elements, and labeling intensity (e.g., cytoplasmic/organellar proteins) in chromogen-labeled IHC or histochemical stained sections that correlates well with standard manual quantification methods. Segmentation with autofluorescence or dual immunolabeling facilitates capture of labeling data from specific cell populations. LSC evaluation of HE-stained sections is accomplished using autofluorescence/eosin fluorescence and inverse scatter. A standardized fluorescent approach with archivability, a lack of fluorescence quenching (photobleaching), and amenability to evaluation of multiple markers in a section has been demonstrated using Qdot® nanocrystals. Examples of LSC use in chromogenic IHC, routine histopathology, and Qdot® labeling will be reviewed, and advantages and disadvantages of this technology will be discussed.
    Type of Medium: Online Resource
    ISSN: 0192-6233 , 1533-1601
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2008
    detail.hit.zdb_id: 2056753-4
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  • 7
    Online Resource
    Online Resource
    SAGE Publications ; 2008
    In:  HSS Journal®: The Musculoskeletal Journal of Hospital for Special Surgery Vol. 4, No. 2 ( 2008-09), p. 143-148
    In: HSS Journal®: The Musculoskeletal Journal of Hospital for Special Surgery, SAGE Publications, Vol. 4, No. 2 ( 2008-09), p. 143-148
    Abstract: As a consequence of newly elevated standards for normal vitamin D levels, there is a renewed interest in vitamin D insufficiency and deficiency ( 〈 32 and 〈 20 ng/ml, respectively) in the orthopedic patient population. This study tests the hypothesis that vitamin D insufficiency is comparably prevalent among both high- and low-energy fracture patients. A retrospective analysis of the medical records for 44 orthopedic trauma in-patients with non-vertebral fractures was conducted from June 1, 2006 to February 1, 2007. The obtained data included a 25-hydroxyvitamin D level, age, gender, and reason for admission; high-energy vs. low-energy fracture. Vitamin D insufficiency, 25(OH)D 〈 32 ng/ml, was found in 59.1% of the patients. Significantly, more women (75%) than men (40%) were vitamin D insufficient among all fracture patients and specifically among high-energy fractures, 80% women insufficient vs. 25% men insufficient. In women, both high- and low-energy fractures present with vitamin D insufficiency (80% of high-energy fractures and 71.4% of low-energy fractures). In men, the mean vitamin D level was lower for low-energy fractures (16 ng/ml) compared to high-energy fractures (32 ng/ml). In addition, men with low-energy fractures were significantly older than men with high-energy fractures and women with low-energy fractures were also older. Statistically, more vitamin D insufficiency is seen in women and our results are consistent with the gender difference seen in the general population. Even among younger men who sustain a high-energy fracture, 25% are vitamin D insufficient. Women with fractures regardless of age or fracture energy level have low vitamin D levels. Levels of 25(OH)D should be measured in all orthopedic trauma patients and the American Society for Bone and Mineral Research and National Osteoporosis Foundation currently recommend that vitamin D levels should be corrected.
    Type of Medium: Online Resource
    ISSN: 1556-3316 , 1556-3324
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2008
    detail.hit.zdb_id: 2210985-7
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  • 8
    Online Resource
    Online Resource
    SAGE Publications ; 1988
    In:  Exceptional Children Vol. 55, No. 2 ( 1988-10), p. 147-158
    In: Exceptional Children, SAGE Publications, Vol. 55, No. 2 ( 1988-10), p. 147-158
    Abstract: This article examines the instructional and political validity of current educational policy regarding categorical programs for low-achieving elementary school students. A widely recognized problem in the categorical organization of services for these students is fragmentation at all levels. Attempts to reduce that fragmentation by unifying the categorical programs must address three issues each in the realms of instructional and political validity. Among the instructional validity issues are questions about the, similarities and differences between learning disabled and remedial students in instructional levels, learning rates, and “learning styles.” Data from two studies suggest that the similarities in instructional level and learning rates are greater than the differences. The political issues requiring resolution before implementation of a unified system are protection and equitable distribution of resources, participation in decision making, and protection of jobs. Benefits of a unified system and issues that policy makers must address are discussed.
    Type of Medium: Online Resource
    ISSN: 0014-4029 , 2163-5560
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1988
    detail.hit.zdb_id: 2066308-0
    SSG: 5,2
    SSG: 5,3
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  • 9
    Online Resource
    Online Resource
    SAGE Publications ; 1997
    In:  Journal of Near Infrared Spectroscopy Vol. 5, No. 3 ( 1997-06), p. 167-173
    In: Journal of Near Infrared Spectroscopy, SAGE Publications, Vol. 5, No. 3 ( 1997-06), p. 167-173
    Abstract: Wet chemical measurements and near infrared spectra of dry ground leaf samples were analysed to test a multivariate regression technique for estimating component spectra. The technique is based on a linear mixture model for log(1/ R) pseudoabsorbance derived from diffuse reflectance measurements. The resulting unmixed spectra for carbohydrates, lignin and protein resemble the spectra of extracted plant carbohydrates, lignin and protein. The unmixed protein spectrum has prominent absorption peaks at wavelengths that have been associated with nitrogen bonds. It therefore appears feasible to incorporate the linear mixture model in whole leaf models of photon absorption and scattering so that effects of varying nitrogen and carbon concentration on leaf reflectance may be simulated.
    Type of Medium: Online Resource
    ISSN: 0967-0335 , 1751-6552
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1997
    detail.hit.zdb_id: 2021280-X
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  • 10
    Online Resource
    Online Resource
    SAGE Publications ; 2020
    In:  Journal of Investigative Medicine High Impact Case Reports Vol. 8 ( 2020-01), p. 232470962095221-
    In: Journal of Investigative Medicine High Impact Case Reports, SAGE Publications, Vol. 8 ( 2020-01), p. 232470962095221-
    Abstract: Immunoglobulin G4–related disease (IgG4-RD) is a chronic fibrosing inflammatory systemic disorder that has been recognized relatively recently in the medical literature. Little is known about the exact disease pathogenesis and epidemiology. IgG4-RD may be asymptomatic or may have minimal symptoms or involve multiple organs with overt symptoms. The different phenotypes of IgG4-RD can lead to delayed or incorrect diagnosis. We report the case of a 66-year-old male with coal worker’s pneumoconiosis who presented with progressive kidney disease and was diagnosed with tubulointerstitial nephritis due to IgG4-RD. The patient was noted to have progressive kidney disease, skin involvement, worsening interstitial lung disease, complete vision loss in the left eye, and retroperitoneal fibrosis. Serologic workup revealed elevated inflammatory markers, IgG4 and IgG1 levels, and hypocomplementemia. A tissue biopsy helped us establish a definitive diagnosis of IgG4-RD and initiate treatment with glucocorticoids to prevent further progression of kidney disease and other end-organ damage.
    Type of Medium: Online Resource
    ISSN: 2324-7096 , 2324-7096
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2710326-2
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