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1.
In southern Middle America, highland Maya bonesetters are called on to treat many cases of bodily injury. While Guatemalan Maya bonesetters vary greatly in their techniques and specialties, they prioritize manual treatment modalities, using their hands to address problems in clients' bodies. For bonesetters, the hands achieve direct knowledge of the suffering body, enabling them to work and securing the trust of those they treat. Nonetheless, Maya bonesetters face opposition from physicians who argue that bonesetters are untrained in Western trauma techniques and can inflict irreparable harm on people. This article examines how Maya bonesetters work in an environment hostile to their craft and explores some important vectors of bodily and ideological engagement between Maya bonesetting and Guatemalan biomedicine. [Maya bonesetters, manual medicine, embodied knowledge]  相似文献   

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Although in contemporary methods and (insofar as we are justified in using the term at all) in the contemporary psychology of foreign-language learning, the concepts of "active" and "passive" are widely used with reference to aspects of learning, to methods, habits, and models, these concepts are actually quite vague. This raises the necessity of systematically examining the main problems associated with maintaining a distinction between "active" and "passive" in language acquisition.  相似文献   

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Rita Lindenfield 《CMAJ》1965,92(14):752-755
Today, with increasing emphasis on teaching programs, members of the teaching faculty are prone to lose sight of the implications of such programs for the patients, the trainees and the staff. But the effects, for good or ill, are there. For example, what does it mean to a patient to be interviewed in front of a group of students? What effect does the frequent turnover of trainess have on patients? Trainees, for their part, have a desire to succeed, but simultaneously they experience the frustration born of lack of knowledge. They want to help, but how? Staff not only carry a responsibility to teach; they must also evaluate. Indeed for each group there are special problems and for each group special compensations. Only as teaching staffs recognize these special problems—and these special compensations—can they discharge their responsibilities in a way that does justice to education in the truest sense of the word.  相似文献   

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ObjectiveThis update will address 3 areas specifically that are essential to improving cardiovascular outcomes for women.MethodsThe current literature has been reviewed and three important areas of cardiovascular care in women are highlighted. First is that even though women and men share many traditional risk factors for ischemic heart disease, several of these risk factors affect women disproportionately when it comes to CVD risk and events. There are also unique sex-specific risk factors for women and risk factors that are more common in women than in men. Adverse outcomes of pregnancy and hypertensive disorders of pregnancy are associated with an increased long-term risk of CVD and events. At menopause, cardiovascular risks increase, and lipids become unfavorable. Second is that diagnostic testing for ischemic heart disease presents different specificities and sensitivities between men and women and testing should be determined according to what is best and safest for women. Third is that currently, menopause hormone therapy is approved by the U.S. Food and Drug Administration for the treatment of vasomotor and genitourinary symptoms, prevention of osteoporosis, and estrogen replacement in the setting of surgical menopause, hypogonadism, or premature ovarian insufficiency. It is not recommended for the primary or secondary prevention of CVD and not recommended for women with high atherosclerotic CVD risk.ResultsCardiovascular disease (CVD) remains the most common cause of death in women in the United States despite tremendous improvements in cardiovascular care for men and women. The prevention of CVD in women with early detection and implementation of preventive therapies before atherosclerotic CVD develops is critical to improving outcomes for women.  相似文献   

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It is unclear what the contribution of prenatal versus childhood development is for adult cognitive and sensory function and age-related decline in function. We examined hearing, vision and cognitive function in adulthood according to self-reported birth weight (an index of prenatal development) and adult height (an index of early childhood development). Subsets (N = 37,505 to 433,390) of the UK Biobank resource were analysed according to visual and hearing acuity, reaction time and fluid IQ. Sensory and cognitive performance was reassessed after ~4 years (N = 2,438 to 17,659). In statistical modelling including age, sex, socioeconomic status, educational level, smoking, maternal smoking and comorbid disease, adult height was positively associated with sensory and cognitive function (partial correlations; pr 0.05 to 0.12, p < 0.001). Within the normal range of birth weight (10th to 90th percentile), there was a positive association between birth weight and sensory and cognitive function (pr 0.06 to 0.14, p < 0.001). Neither adult height nor birth weight was associated with change in sensory or cognitive function. These results suggest that adverse prenatal and childhood experiences are a risk for poorer sensory and cognitive function and earlier development of sensory and cognitive impairment in adulthood. This finding could have significant implications for preventing sensory and cognitive impairment in older age.  相似文献   

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This article examines the role language ideologies played in the changing instructional and social organization of Khmer literacy classes in Long Beach, California. Language and language use in classrooms have been carefully examined over the years, but analysis of how language attitudes influence pedagogical theory and practice has been largely neglected. This article reveals one way in which language ideologies engage with local theories of learning to shape not only pedagogies informing instruction but also social relations within classes.  相似文献   

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We studied the learning capacities and anticipatory behaviour in a “sit-and-wait” predatory fish, the Atlantic halibut, Hippoglossus hippoglossus. In Experiment 1 two groups of halibut received series of light flashes (conditioned stimulus, CS) that started before delivery of food (unconditioned stimulus, US) and persisted until after food delivery, i.e. delay conditioning. Control groups received unpaired CS and US presentations. The anticipatory behaviour of delay conditioned halibut consisted mainly of take-offs towards the surface shortly after onset of the CS. In Experiment 2 six groups of halibut were trained in three trace conditioning procedures: Two groups with 20 s, two groups with 60 s and two groups with 120 s trace interval. Learning was evident in the 20 and 60 s trace groups and in one of the 120 s trace groups. In contrast to delay conditioning the anticipatory behaviour of trace conditioned halibut was characterized by subtle movements near the tank floor with orientation towards the CS. The cautious responses of halibut after trace conditioning differed markedly from what is observed in other fish species and are suggested to reflect a “sit-and-wait” foraging strategy that requires the predator to remain undetected until the prey is within lunging range.  相似文献   

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The following critical ethnography interrogates what it means for urban students to learn in multicultural ways, given the oppressive historical and present contexts of their newly desegregated urban district. By retelling events that occurred in the district and the classroom, I present a picture of urban students who are willing to learn and engage in classroom activities when the activities do not threaten their emotional safety. Although their actions are understandable, the students' conscious decisions to disengage from school stifles learning opportunities that would allow them to empathize and connect with other students as a move toward individual and group empowerment. Using critical race theory, I problematize the possibilities for successful multicultural classrooms in urban districts with complex legacies of injustice and racial hostility.  相似文献   

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Several studies have shown the potential use of Ilex paraguariensis in developing products with the aim to protect biological systems against oxidative stress-mediated damages. In the same way, technological studies have demonstrated the feasibility of obtaining dry products, by spray-drying process, from aqueous extracts of I. paraguariensis in laboratory. The present work was designed to develop pellets by extrusion/spheronization process, from an I. paraguariensis spray-dried powder. The pellets were characterized with respect to their chemical, physical, and technological properties, and the thermal and the photostability of the main polyphenol constituents were investigated. The pellets exhibited adequate size, shape, and high process yield (78.7%), as well as a good recovery of the total polyphenols (>95%) and a good dissolution in water (89.44 to 100.05%). The polyphenols were stable against light when conditioned in amber glass bottles; unstable against heat when the samples were conditioned either in open glass bottles or in hermetically sealed glass bottles and demonstrated to be hygroscopic and sensible to the temperature, especially when stored in permeable flasks. These findings pointed to the relevance of reducing the residual moisture content of pellets as well as of conditioning them in opaque humidity tight packages under low temperatures. The feasibility of obtaining pellets from an I. paraguariensis spray-dried powder using extrusion/spheronization technique was, for the first time, demonstrated. This finding represents a novelty for the herbal products in both pharmaceutical and food fields.  相似文献   

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Background. Multiple therapeutic combinations have been tested to determine the optimal regimen(s) for Helicobacter pylori eradication, leading to very different results depending on the geographical area. Our goal was to evaluate the efficacy of a "quadruple" therapy with omeprazole, tetracycline, bismuth and metronidazole in our area.
Materials and Methods. We investigate 106 consecutive patients with active peptic ulcer disease (duodenal, gastric or both) and Helicobacter pylori infection. One-week therapy with omeprazole 20 mg b.i.d., tetracycline hydrochloride 500 mg q.i.d., colloidal bismuth subcitrate 120 mg q.i.d., and metronidazole 250 mg t.i.d was prescribed. Between the days 30 and 40 after treatment ended follow-up endoscopy was performed. Eradication was defined as both negative urease test and histology. Between days 90 and 360 a 13C urea breath test was performed in 100 patients.
Results. Of the 106 patients in the study, 91 had duodenal ulcer, 12 had gastric ulcer, and 3 had both. Side effects were observed in 25% of the cases. Eradication was achieved in 87.7% (93/106; CI 79.9–93.3). Healing was obtained in 95.2% (100/105; CI 89.2–98.4); 97.8% (CI 92.4–99.7) in those eradicated and 75% (CI 42.8–94.5) in non-eradicated ( p < .01).
Conclusions. Quadruple therapy with omeprazole, tetracycline, bismuth subcitrate and metronidazole achieves healing rates up to 95–100%. The 87.7% eradication rate obtained suggests that the regimen we used is a reasonable therapeutic alternative in our area.  相似文献   

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Turnip yellow mosaic virus (TYMV) is a plant pathogenic virus transmitted mainly through its host Brassica spp. TYMV is originated from Europe. Its infection cases have been reported in Australia, Brazil, Turkey, and Japan. Symptoms similar to those of TYMV infections were also reported in Korea in 2012. In this study, we developed RT-PCR primer pairs that were highly sensitive for detecting TYMV. The developed RT-PCR primer pairs offered about 10–100 times stronger detection sensitivity compared to primer pairs previously used in Korea. As a result, a 491 bp TYMV-specific band was identified. The specific band was confirmed to be TYMV based on sequencing results and phylogenetic analysis. The RT-PCR primer pairs developed in this study can be used to rapidly and precisely diagnose TYMV in agricultural products such as Chinese cabbage and other crops infected by TYMV.

Electronic supplementary material

The online version of this article (doi:10.1007/s12088-015-0557-1) contains supplementary material, which is available to authorized users.  相似文献   

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In northern Việt Nam the felling of Cupressus for wood and incense has resulted in the decimation of wild cypress populations. Ever since specimens of Cupressus from Việt Nam were first sent to Paris in 1905, they have been inappropriately referred to a variety of names including Cupressus funebris, Cu. torulosa, and synonyms of Callitropsis lusitanica. This taxonomic disarray was somewhat ameliorated in 1994 when a new species—Cu. tonkinensis—was proposed. Unfortunately, the morphological differences between Cu. tonkinensis and similar species were not clearly articulated. As a result, Cu. tonkinensis has generally been ignored or treated as a synonym of Cu. torulosa. These two species can be distinguished by the presence of dimorphic leaves in Cu. tonkinensis and their absence in Cu. torulosa as well as several continuous morphological characteristics including the frequency of resin glands (greater in Cu. tonkinensis) on ultimate segments, and the size of the ovulate cone (smaller in Cu. tonkinensis). The natural habitat occupied by Cu. tonkinensis in a principal coordinates plot of nine monthly climate variables and 40 soil variables is remote from other species. Cupressus tonkinensis habitat is statistically distinct from Cu. chengiana, Cu. gigantea, and Cu. torulosa, but statistically indistinguishable from the habitats of Cu. funebris.  相似文献   

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