| 词汇 | example_english_population |
| 释义 | Examples of populationThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Secondly, our results are restricted only to females and may not extrapolate to male populations. Posttraumatic stress disorder associated with exposure to criminal victimization in clinical and community populations. Regions with sizable urban populations appeared to maintain much less credible registers than regions with largely rural populations. Anything that worsens a population's economic well-being has the effect of increasing vulnerability to disease as well as to external pressures. Qualitative similarity of parasite communities was higher between host populations living in the localities not influenced by the sea. We were specifically interested in the shape of the exposure-prevalence function for both host populations. Indeed, in natural populations of cyprinids, and animals in general, there are few obvious symptoms of disease. Both of these will be affected by migration, movement and intermixing between human populations in endemic areas. A wider study including denser molecular sampling of populations and a re-evaluation of purported morphological differences will help to confirm this. They thus represent a perfect natural system of comparable populations. Using these methods, the resistance status of parasite populations can be analysed by testing representative numbers of individual nematode larvae or adults. In the general case of mobile heavies, the motion of all three populations (electrons, protons and heavies) becomes strongly coupled. High bruchid populations in treatments with parasitoid introduction were reduced by 50-75% compared to the control treatments without parasitoids. Clusters were identical to those used to assign populations to groups. To avoid passage in cell culture and the possible selection of atypical populations, the virus isolates were not plaque purified in cell culture. Our study contributes toward the understanding of several aspects of the natural history of bartonella infection in host populations. The estimates of the infection rate are also quite variable, but this could be explained by differences in the study populations. No other data are given about the populations being compared or the methodology of the research. Research in social epidemiology and medical sociology has consistently shown socio-economic differentials in health in general populations. The net result is that working and retired populations are becoming more similar and are increasingly subject to diverse life-chances. The final two sections in the book address the issues affecting grandparents among diverse populations and services and interventions. Information can be sparsely or coarsely distributed across populations of neurons depending upon the stimulation conditions. The simulations have been carried out for populations with two different growth rates. However, in tobacco-growing areas the tobacco-feeding form predominated in spring populations on peach, and was sometimes found on other secondary hosts. Results have varied with the termite species and strain of fungus tested, and the concentration of inoculum and its mode of delivery to termite populations. See table 1 for abbreviations of names of populations. Other forms of interclonal selection may also exist in the examined populations. Optimizing such a strategy requires the characterization of sand fly populations in target areas with regard to species composition and extant resistance, among other parameters. Problems with the mark-recapture technique for estimating the size of termite foraging populations are beyond the scope of this article. Levels of natural populations of larval parasitoids were measured by their parasitism rate. Proportional relationships may (or may not) occur when both populations grow exponentially until they reach their maximum abundance. When populations are small, effects of genetic drift are more important. Further studies are required to consider the more difficult problem of sustaining fly-free areas in open populations faced with re-invasion pressure. In many cases this is possible without the interference of explicit tasks, something that is particularly attractive when working with disordered populations. The focus of the third section is on bilingual language acquisition for special populations. On many occasions attempts have been made to explain differences in fertility levels between different populations in terms of different breastfeeding practices. A major contributing factor is, of course, aging populations. What should guide cross-cultural efforts in and among clinics, organizations, communities, and transnational populations? Targets do not markedly affect robust populations outside the deployment area. The presence of genetically diverse phylloxera with strong vine host associations suggests that populations of this insect may be comprised of host 'specialists'. Profiles of mucin-degrading enzyme activities were markedly different in planktonic and biofilm communities, indicating that these populations were metabolically distinct. Recall that the same picture-word pairs were utilized across the two participant populations. Therefore, a valid comparison of populations of speakers requires that the same head nouns and possessors types be used in all groups. Furthermore, possible separations among populations were examined using multivariate approaches. The populations used here appear to sample the material offered to them and then decide whether to accept (and stay) or reject. Therefore, an alternative method of estimating termite populations is needed. The percentage of genetic variation between regions, among populations within regions and within populations was determined for each enzyme. The proportion of genetic variation between regions, among populations within regions, and within populations was calculated for each enzyme (table 2). However, the present authors tentatively conclude that diving beetles may emigrate due to density-dependent effects when their populations reach certain but unknown threshold levels. The availability of alternative prey may have affected the quantities of slug consumed, but clearly did not prevent the beetles from reducing slug populations. At all sites, third instars were found throughout the year (fig. 1), indicating the presence of allochronic populations. Table 3 shows the number of distinct genotypes that were observed among the six populations. A large number of traps are required to accurately estimate the density of patchy populations. Competition between bacterial populations in a community causes a succession of microorganisms and may lead to the dominance of some species. However, mortality rates are still far from sufficient to keep host/prey populations under control and all investigated sites suffer from unabated outbreaks. Following inoculation, the system was left for 24 h to enable bacterial populations to adjust to these environmental conditions. The proportion of each individual's genotype that originated from one of the other populations was estimated using the assignment tests. Taken together they represent between 18 and 25 per cent of the rural populations of those provinces. However, this article focuses on the first main result of the longitudinal analysis : the differential mortality within industrial populations. The different interests of urban and rural populations became increasingly transparent. Worse, there seems no prima facie reason why abundant food should cause populations to stabilize (cf. pp. 205-6) : rather the reverse. Specifically, we compare headship succession and household formation rules among these three populations between 1789 and 1909. In all three populations, new heads were almost always the sons or grandsons of the previous head (72 to 79 per cent). In all three populations roughly four-fifths retained the same structure between registers. Herbivores differ in their abilities to build up large populations. The sterile insect technique has demonstrated its ability to reduce fruit fly populations, and consequently reduce damage to fruit. When the homogenization effect doesn't take place, higher values of variation among populations can be detected. Such situations also require populations to be relatively discrete with little external recruitment through immigration. We will see that all research populations are potentially vulnerable and in need of special protection. Her research explores a range of topics, including justice in healthcare, healthcare for aging individuals and populations, and the use of medically futile treatment. My point is not that the profession should refrain from robust advocacy of public policies that would clearly enhance the health and wellbeing of populations. Figure 7 answers the question by comparing the influence of sibling position on marriage in our three populations. While the magnitude of the effect varies, this volume effect has been documented in several different populations and over several time periods. The populations examined in this study also showed significant variability in larval growth rate (fig. 2a). When a species has a wide geographical distribution, its local populations in different regions may experience different selection pressures. The two populations showed similar responses to temperature with respect to development time and survival of immature stages. The fact that the two populations performed similarly in all biological aspects that were examined in this study suggests that they have a common origin. The occurrence of significant gene flow between populations provides interesting additional supporting evidence for their dispersal potential. Vagility of pest populations may result in difficulty predicting temporal and spatial pest outbreaks, and influence genetic resistance to chemical control. Each year winged aphids migrate into the area in early summer, and populations expand on adult cereal plants. Each of the seasonal factors increased the impact of the insecticide because they lowered the population's growth potential. There are a number of interesting features that distinguish these two populations at the haplotypic level. Others are part of larger organizations that focus on specific populations or legal problems. Expanding into the warmer waters, salp populations are increasing in the southern part of their range and replacing the krill. In addition, one might ask whether two sample populations have the same phase. Thus, bacterial populations are some combination of zoonotic, quasi-epidemic, and epidemic strains. Epidemiology and public-health planning correctly look at policies to apply to large populations. Public policies in societies with ageing populations can and do affect the allocation of important social resources over the life course. Datasets describing older adult populations necessarily become dated rather quickly and must be continually updated. The animals within them are therefore extremely vulnerable, mainly because the populations within them tend to be too small for safety. Similar patterns of non-syntenic disequilibrium are common in recently admixed human populations and often lead to false-positive signals when mapping complex traits. The reasons for this discrepancy are unclear, and may represent inherent differences in the populations studied. Distinctive breast cancer incidence and mortality patterns in well-defined populations may therefore inform etiologic understanding. The controversy may be the result of differences in study populations, in choice of bronchodilators, or in measured outcome variables between trials. Comparison with specific findings in the literature is difficult because of the vast differences in study objectives, patient populations studied, parameters evaluated, and analytical approach. Our observation that incidence rates estimated from both populations were of a similar magnitude supports the feasibility of this approach. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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