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291.
A spotted bat ( Euderma maculatum ) was picked up at the headquarters of Browns Park National Wildlife Refuge, Moffat County, Colorado, on 29 August 1981. 相似文献
292.
Dennis D. Austin Robert A. Riggs Philip J. Urness David L. Turner John F. Kimball 《西北部美国博物学家》2011,49(1)
Trends in age-specific, eviscerated carcass weights were determined for hunter-harvested yearling and two-year-old buck mule deer. Carcass weights declined over an 11-year period from two areas of similar management, but with independenly collected data sets. Carcass weights also declined between the opening and second weekends of the hunt. Management implications are discussed. 相似文献
293.
Stomach contents of 650 clouded salamanders ( Aneides ferreus ), collected monthly throughout the year from Curry County, Oregon, were examined. Samples from three age classes were involved: (1) 489 adults, (2) 131 juveniles, and (3) 30 hatchlings. Foods did not vary by sex, but did vary by age and by season. Hatchlings ate small items, particularly mites, springtails, flies, and small beetles. Juveniles fed mainly on flies, isopods (sowbugs), beetles, mites, and centipedes in winter; beetles, ants, and isopods in spring; ants and beetles in summer; and isopods, beetles, and ants in fall. Adults ate isopods and beetles as their major foods in winter, spring, and fall and isopods, ants, beetles, and earwigs in summer. Four species were exceedingly important as foods for these salamanders: an unidentified isopod, the snout beetle ( Trachyphloeus bifoveatus ), the European earwig ( Forficula auricularia ), and an ant ( Lasius alienus ). 相似文献
294.
Estimates of site potential for ponderosa pine based on measured site indexes in 416 stands are compared between seven habitat types and one community type. No significant differences in mean site index are found between the habitat types studied. The habitat types are classified into high or moderate site potential classes based on mean site indexes. 相似文献
295.
Nine species of mites of the genus Proctolaelaps were collected in flowers or phoretic in the nares of hummingbirds in Trinidad. Previously named species P. kirmsei , P. glaucis , and P. belemensis are redescribed, and six new species are described: P. jurgatus , P. mermillion , P. rabulatus , P. contumex , P. certator , and P. contentiosus . Proctolaelaps belemensis cyanocompsae is raised to specific status. Host plants are given for all species except P. mermillion , which was collected only from a hummingbird host. New World flower-inhabiting Proctolaelaps are grouped into two hypothetically monophyletic lineages, the kirmsei -group and the belemensis -group, on the basis of adult morphology. A key to the nine Trinidadian species is given. 相似文献
296.
Dwarf mistletoe-pandora moth interaction and its contribution to ponderosa pine mortality in Arizona
The interaction between Southwestern dwarf mistletoe, Arceuthobium vaginatum subspecies cryptopodum , infestation and defoliation by the pandora moth, Coloradia pandora pandora , on the Kaibab Plateau in Arizona was evaluated. Heavy defoliation of ponderosa pine, Pinus ponderosa , in 1979 and 1981 resulted in mortality of individual trees in areas of heavy dwarf mistletoe infestation. Postmortem evaluation of ponderosa pines indicated that dead trees had a significantly higher dwarf mistletoe rating than did nearby paired live trees. Of 25 tree pairs evaluated, only two live trees had higher dwarf mistletoe ratings than the paired dead tree. Mean dwarf mistletoe ratings were: live trees 2.9, dead trees 4.6 (6 class dwarf mistletoe rating system). Implications for management of the pandora moth are discussed. 相似文献
297.
298.
James T. Ziegenfuss Jr. Robert F. Munzenrider Joan Lartin-Drake 《Systemic Practice and Action Research》1998,11(6):575-597
Many health care organizations are currently engaged in changing the design of their health care services delivery system. The issues of cost containment, quality, and access are prominent. This paper reports on the impact of the implementation of a new organization design at one university hospital. The organization change effort (named HORIZONS) was a five year project funded in part by the Robert Wood Johnson Foundation and the Pew Charitable Trusts. In a changing health care environment, the project was undertaken with three goals in mind: (1) to maintain and enhance quality of patient care; (2) to improve the quality of working life; and (3) to accomplish this in a budget neutral manner. Initiated as a program to strengthen hospital nursing, the project became a patient-focused redesign effort encompassing both clinical and administrative affairs. The core ideas of the project approach included systems thinking, interactive planning and idealized design. This evaluation reports on the project's progress after six years. 相似文献
299.
Rachna S. Pandya Haining Zhu Wei Li Robert Bowser Robert M. Friedlander Xin Wang 《Cellular and molecular life sciences : CMLS》2013,70(24):4729-4745
Amyotrophic lateral sclerosis (ALS) is a fatal chronic neurodegenerative disease whose hallmark is proteinaceous, ubiquitinated, cytoplasmic inclusions in motor neurons and surrounding cells. Multiple mechanisms proposed as responsible for ALS pathogenesis include dysfunction of protein degradation, glutamate excitotoxicity, mitochondrial dysfunction, apoptosis, oxidative stress, and inflammation. It is therefore essential to gain a better understanding of the underlying disease etiology and search for neuroprotective agents that might delay disease onset, slow progression, prolong survival, and ultimately reduce the burden of disease. Because riluzole, the only Food and Drug Administration (FDA)-approved treatment, prolongs the ALS patient’s life by only 3 months, new therapeutic agents are urgently needed. In this review, we focus on studies of various small pharmacological compounds targeting the proposed pathogenic mechanisms of ALS and discuss their impact on disease progression. 相似文献
300.