郴州地区肠球菌耐药性变迁情况分析

目的分析郴州地区肠球菌耐药性的变化情况,更好地指导临床用药。方法收集郴州地区各医院1996～1997年检出的158株和2006～2007年检出的312株肠球菌,并做药敏试验,使用χ2检验肠球菌耐药性的变化情况。结果2006～2007年的肠球菌比1996～1997的肠球菌对氯霉素(χ2=14.582)、红霉素G(χ2=38.724)的耐药率增升明显,P均<0.05。而对万古霉素、青霉素、氨苄西林、庆大霉素、呋喃妥因、左氧氟沙星的耐药性无明显改变。结论10年后肠球菌的耐药性发生了变化,对一些抗生素的耐药率均有增升。因此,临床上使用抗生素类药物时应参考药敏试验结果合理用药。

On the social-cultural changes of English and Chinese words from ＂jiayou＂

Word is the most active factor in the research of culture connotations and it is essential in understanding the culture of target language. This article not only attempts to analyze non-equivalence in semantic and cultural connotation of words between Chinese and English words from cross-cultural perspective, but also highlights the profound understanding of the relation of culture, and language is the best way to avoid cross-cultural barriers and obstacles. Finally, by elaborating the loan words between two different cultures, the paper maintains the cultural integration out of respect, appreciation and acceptance is the embodiment of human social and cultural development of human society and the vitality of the cultural changes.

Strained Si-Channel Heterojunction n-MOSFET

The process parameters are adjusted and the process procedure is simplified on the basis of precursor's work and the strained Si channel SiGe n MOSFET is fabricated successfully.This n MOSFET takes the strained Si layer(which is deposited on the relaxed SiGe buffer layer) as current channel and can provide a 48 5% improvement in electron mobility while keeping the gate voltage as 1V.

Biology and Culture

Human beings do not live in nature, they live in culture. Contrary to biological evolution, which is based on genetic inheritance, cultural change is transmitted by instruction. Simple beginnings of culture have been observed in various animals. However, the much advanced human culture became possible by its transmission by language, and by its being cumulative. The concept of cultural change as a progressive process, popular by 18th and 19th centuries thinkers, is nowadays rejected, and the uniqueness of each culture stressed. Although, there are some similarities between biological evolution and cultural change, important differences between these processes are emphasized. The rapid rate of cultural change （especially its technological aspect）, as compared to the rate of biological evolution, is noted. In addition, some cultural changes led to new phenomena, which in a time of crisis can be annulled. The possible consequences of the different rate of these two processes for humans as individuals, and for their societies are discussed.

Time Evolution,Dynamical Quantum Fluctuation and High-Order Squeezing Feature in Polariton System——Ⅰ

We have set up a new reduced model Hamiltonian for the polariton system, in which the nonlinear interaction contains the rotating term k l （ a ＋ b ＋ ab＋） and the attractive two-mode squeezed coupling - k2 （ a ＋ b＋ ＋ ab ） . The dynamical evolution of this system has been solved and the nonclassical features relevant to the second-order and high-order squeezing have been obtained in an analytical form. For the first time, in contrast to the existing result, we have confirmed for the phonon field that the attractive two-mode squeezed interaction will not only result in the second-order and high-order squeezing in X-component with the time evolution, but also in time average. Furthermore, the phenomena of collapse and revival of inversion will occur as well in the time evolution of the average number of photon and phonon, as also in the second-order and high-order squeezing of photon field, particularly, in the high-order squeezing of phonon field.

Mineralogical Characteristics of Yellow- Red Soils Derived from Granite

Mineral constituents and their weathering in yellow-red soils derived from granite in middle and lower reaches of the Yangtze R iver were studied. Light minerals in fractions greater than silt contained over 80% quartz and feldspar, and heavy ones contained more than 60% various iron minerals and about 30% mica and hornblende. Kaolinite was the main clay mineral, the content of which was about 300 -400 g/ kg. Quartz was weathered very weakly, Ca-feldspar was weathered over 65%, and about 25% of Na-feldspar was weathered. The vermiculitisation of mica was relativly obvious, > 50% of mica being weathered to vermiculite. Weatherable minerals were also obviously weathered, the weathering being about 60%. Soil vermiculite was evolved through the process of mica→hydromica→vermiculite-chlorite→vermiculite, which was closely related to leaching situation and oxidic condition.

Winds of Change in Saudi English Textbooks： A Cultural Perspective

The paper investigates Saudi English textbooks in order to trace the ways in which culture was dealt with in the English curriculum in the last 33 years. To this end, the three textbooks which were published one after another for the third-grade secondary school students in the last three decades were analyzed. The paper finds that in the first book published in 1982, the writer introduced only those cultural elements from outside Saudi Arabia, which could be subordinated to the self-enclosed cohesive Saudi national culture that rested and was shaped on and around the faith of Islam. The same cultural pattern is maintained in the second book published in 1998, but in the third book published in 2013, a huge number of western and multicultural elements were accommodated without any attempt to assimilate them to Saudi national culture. The paper concludes that in these textbooks, culture was taken either as Parsons＇s ＂system＂--pattern-maintaining national culture-or as Rothkopf＇s and Friedman＇s ＂pattern-breaking＂ western culture, but it was seldom treated as Bauman＇s ＂matrix＂.

Cultural Psychology： An Interdisciplinary Perspective

Cultural Psychology emerged as an interdisciplinary subfield roughly in the 1980s/1990s. With about thirty years of momentum, this discipline has grown from little more than a special interests group to a topic to which multiple institutions and journals have been dedicated. This paper presents an outline of the discipline of Cultural Psychology from an American interdisciplinary perspective. The pitfalls of General Psychology （research methodology, politicization, and an essentialist hermeneutic） and Anthropology （an epistemological gap in the four fields approach, psychophobia, and the role of the researcher in cultural change） are addressed, in turn. Cultural Psychology provides an alternative to these pitfalls by drawing on the strengths of each discipline to address both theoretical and empirical problems. Cultural Psychology urges for a critical reflection on the social structure and history of its own discipline, resulting in a broader academic canon and a more nuanced understanding of interdisciplinary relations within the human sciences.

Fuel load and flight ranges of blackcaps Sylvia atricapilla in northern Iberia during autumn and spring migrations

Fuel accumulation, mainly as fatty acids, is one of the main characteristics of migratory, birds. Studying to what extent each population or species manages fuel load and how it varies along routes of migration or between seasons （autumn and spring migrations） is crucial to our understanding of bird migration strategies. Our aim here was to analyse whether migratory blackcaps Sylvia atrieapilla passing through northern Iberia differ in their mean fuel loads, rate of fuel accumulation and ＇ potential＇ flight ranges between migration seasons. Blackcaps were mist netted for 4 h-periods beginning at dawn from 16 September to 15 November 2003 - 2005, and from 1 March to 30 April 2004 - 2006 in a European Atlantic hedgerow at Loza, northern Iberia. Both fuel load and fuel deposition rate （this latter assessed with difference in body mass of within-season recaptured individuals） were higher in autumn than in spring. Possible hypotheses explaining these results could be seasonal-associated variations in food availability （likely lower during spring than during autumn）, the fact that a fraction of the migrants captured in spring could breed close to the study area and different selective pressures for breeding and wintering

Game of Property Rights and System Change

Governments＇ protection and support are very important for rural enterprises during their birth and development. But, in fact, governments own the rights to control the operation of rural enterprises to a large extent. Govemments encourage and lead the reform of property rights of rural enterprises. Why governments are willing to give up vested interests, and actively promote the reform of property rights of rural enterprises？ This seems to be the key to explain the reform of property rights of rural enterprises. This paper puts forward the hypothesis, uses mathematical models and statistical analyses, and adopts relevant data to verify the needs of governments for fiscal targets, and the rationality of their behavior actively encourages and promotes reconstruction during the reform for maximizing their interests.

Climate Refugee and Disappearing States： In Need for a New Legal Regime？

Climate change brings unprecedented challenges to both the international community as well as international law. For example, extreme weather conditions might cause States to disappear and force its populations to migrate. These phenomenon creates new challenges for current international law. First, under current legal frameworks, there is no provision regarding the disappearance of a State due to climate change. Second, for people who are forced to migrate due to climate change whether caused internally or internationally, current legal framework is also unclear to whether they could be classified as refugees and to what extent should they be protected. Despite these uncertainties, people of these endangered States cannot be left to fend themselves simply because there is a legal vacuum. This paper proposes a way forward for to meet this challenge and urge the international community to use this opportunity to refine the currently existing legal regime in order to solve the various challenges posed by climate change.

The Ecosystem Service Function of Shandong Xiajin Yellow River Ancient Mulberry Trees System and Its Effect on Regional Ecosystem

The Shandong Xiajin Yellow River Ancient Mulberry Trees System is a model of desertification control in the floor area in the Luxibei Plain,and of sustainable development.The current study about ancient mulberry trees in Xiajin county is mainly qualitative representation,lack of quantitative research.In addition,the relevant important ecological functional assessment should not only confine to quantitative assessment which illustrate the current condition,but also analyze the eco-service changes,derived from ecosystem structure develop,from the time dimension.Based on quantitative eco-service assessment of the ancient mulberry tree group,this paper intend to conduct a comprehensive analysis of ecological functions of ancient mulberry group focuses on the perspective of system structure and function evolution.Quantitative evaluation results show that the system has significant eco-efficiency in water conservation,reducing sediment loss,adjust atmosphere,etc.On timescale,thanks to mulberry cultivation,ecosystem structure and services have also undergone a corresponding change.In ecosystem structure：Planting pioneer trees such as mulberries and other species which can tolerate hostile site conditions,improves the micro-environment.This makes it possible for other crops to grow.The mixed forests and the combination of forestry and agriculture protect biodiversity.What＇s more,they make the structure of the ecosystems more robust,giving full play to their functions.In terms of ecosystem services：ecosystem services of Xiajin Yellow River Ancient Mulberry Trees have shown diversified development.And its main function has transferred from supply products to leisure and entertainment functions.

Climate change and contrasting plasticity in timing of a two-step migration episode of an Arctic-nesting avian herbivore

Greenland white-fronted geese Anser albifrons flavirostris wintering in Britain and Ireland migrate over the sea for 700-1200 km to stage 3-5 weeks in Iceland in spring, continuing a similar distance over the sea and Greenland Ice Cap to West Greenland breeding grounds. During 1969 to 2012, the geese advanced the mean departure date from Ireland by 15 days, during which time also they attained threshold fat stores earlier as well as departing in fatter condition. Over that period, Iceland spring-staging geese shifted from consuming underground plant storage organs to grazing managed hayfields, which provide fresh grass growth despite sub-zero temperatures, when traditional natural foods are inaccessible in frozen substrates. In 2012 and 2013, geese arrived three weeks earlier to Iceland, in fatter condition and accumulated fat significantly slower than in 1997-1999 and 2007. Although geese accumulated sufficient fat stores earlier in Iceland in 2007, 2012 and 2013, they departed around the same date as in 1997-1999, prolonging spring staging by three weeks. Plasticity in winter departure dates is likely due to improved winter feeding conditions （enabling earlier departure in better condition） and a novel predictable food resource in Iceland. Greenland white-fronted geese attained threshold fat stores in Iceland earlier, but remained rather than departing earlier to Greenland. Despite arriving earlier in Iceland, arrival dates on the breeding areas have not changed since the 1880s, presumably because of relatively constant cool springs and heavy snowfall in West Greenland during recent years [Current Zoology 60 （2）： 233-242, 2014].

Improving the quantification of waterfowl migration with remote sensing and bird tracking

Accurately quantifying waterfowl migration patterns is pertinent to monitor ecosystem health and control bird-borne infectious diseases. In this review, we summarize the current understanding of the environmental mechanisms that drive waterfowl migration and then investigate the effect of intra- and inter-annual change in food supply and temperature(e.g., climate change) on their migration patterns. Recent advances in remote sensing and animal tracking techniques make it possible to monitor these environmental factors over a wide range of scales and record bird movements in detail. The synergy of these techniques will facilitate substantial progress in our understanding of the environmental drivers of bird migration. We identify prospects for future studies to test existing hypotheses and develop models integrating up-todate knowledge, high-resolution remote sensing data and high-accuracy bird tracking data. This will allow us to predict when waterfowl will be where, in response to shortand long-term global environmental change.

Global structure and seasonal variations of the migrating 6-h tide observed by SABER/TIMED

Ten years of SABER/TIMED temperature data are used to analyze the global structure and seasonal variations of the migrating 6-h tide from the stratosphere to the lower thermosphere. The amplitudes of the migrating 6-h tide increase with altitudes. In the stratosphere, the migrating 6-h tide peaks around 35°N/S. The climatologically annual mean of the migrating 6-h tide clearly shows the manifestation of the(4, 6) Hough mode between 70 and 90 km that peaks at the equator and near 35°N/S. Above 90 km, the 6-h tide shows more than one Hough mode with the(4, 6) mode being the dominant one. The migrating 6-h tide is stronger in the southern hemisphere. Annual, semiannual, 4-, and 3-month oscillations are the four dominant seasonal variations of the tidal amplitude. In the stratosphere and stratopause, the spring enhancement of the 6-h tide at middle latitudes is the most conspicuous feature. From the mesosphere to the lower thermosphere, the tidal amplitude at low latitudes is gradually in the scale of that at middle latitudes and exhibits different temporal variations at different altitudes and latitudes. Both ozone heating in the stratosphere and the background atmosphere probably affect the generation and the seasonal variations of the migrating 6-h tide. In addition, the non-linear interaction between different tidal harmonics is another possible mechanism.

Hydrological changes and settlement migrations in the Keriya River delta in central Tarim Basin ca. 2.7–1.6 ka BP: Inferred from ^(14)C and OSL chronology

Over one hundred artifacts, including shards, chopped wood, bronze and iron ware debris as well as footprints, have been discovered during archaeological investigations at and around the central Taklamakan Desert Yuansha Site (38°52′N, 81°35′E). Dating (14C and OSL) and landform study show that the present-day dry Keriya River once sustained an oasis human settle- ment in 2.6 ka BP, historically falling into the Spring and Autumn Period (716-475 BCE) of Chinese history. The chronology and archaeological interpretations also show that some 400 years later, the local Keriya River channel had shifted 40 km southeast to sustain a Western Han (206 BCE-25 CE) Wumi settlement at the Karadun site. In the meantime, river-channel migration had allowed reoccupation of a site west of Yuansha City around 1.9 ka BP (abandoned again by 1.6 ka BP). The remains' chronology shows that this site was affiliated to Wumi culture and Eastern Han (24-220 CE) dynasty rule. Palaeoclimatic records indicate that the migrations of the river and oasis settlers between 2.7 and 1.6 ka BP were coeval with Central Asian climate changes. Yuansha City was built just after the end of 2.8 ka BP glacier advances in western China, suggesting that release of more water during the subsequent glacier recession may have facilitated oasis development such that Iron Age European peoples could settle in the Tarim Basin. As shown from analysis of archeological remains, not only at Yuansha but also in other ancient cities in the Tarim such as Loulan and Jingjue (Niya), conditions around 1.6 ka BP were dry enough to cause oasis decline. Thus, the results reported here enhance our knowledge about environmental changes and their effects on human activities and cultural evolution in western China and will stimulate further interdisciplinary studies of landscape and oasis history in the Tarim Basin.

Electrical Characteristics and Reliability of Ultra-Thin Gate Oxides (<2nm) with Plasma Nitridation

MMT （modified magnetron typed） plasma nitridation and NO anneal are used to treat ultra-thin gate oxides in MOSFETs （metal-oxide-semiconductor field effect transistors）. Dual-peak and single-peak N distributions are formed after nitridation. The dual-peak N distribution shows excellent electrical properties and superior reliability in terms of drain current,channel carrier mobility, and TDDB characteristics. The results indicate a means to extend silicon oxynitride as a promising gate dielectric for developing ultralarge scale integrated （ULSI） technology.

The dynamical contact order:Protein folding rate parameters based on quantum conformational transitions

Protein folding is regarded as a quantum transition between the torsion states of a polypeptide chain.According to the quantum theory of conformational dynamics,we propose the dynamical contact order(DCO) defined as a characteristic of the contact described by the moment of inertia and the torsion potential energy of the polypeptide chain between contact residues.Conse-quently,the protein folding rate can be quantitatively studied from the point of view of dynamics.By comparing theoretical calculations and experimental data on the folding rate of 80 proteins,we successfully validate the view that protein folding is a quantum conformational transition.We conclude that(i) a correlation between the protein folding rate and the contact inertial moment exists;(ii) multi-state protein folding can be regarded as a quantum conformational transition similar to that of two-state proteins but with an intermediate delay.We have estimated the order of magnitude of the time delay;(iii) folding can be classified into two types,exergonic and endergonic.Most of the two-state proteins with higher folding rate are exergonic and most of the multi-state proteins with low folding rate are endergonic.The folding speed limit is determined by exergonic folding.

The function and significance of newly created ethnic minority writing systems during cultural transition: Taking the Hani, Lisu, and Naxi ethnic minorities as examples

New writing systems for several of China’s minority languages were developed and implemented during a unique period in Chinese history.Throughout the different stages of modern Chinese history,these writing systems have had various societal functions and uses,including the improvement of education and literacy for China’s ethnic minorities.In the new era,the societal functions of these newly created systems have been weakened by the large-scale influence from both outside and within minority environment.Nevertheless,the newly created writing systems have undeniable value and significance,and they continue to serve positive functions that cannot be fulfilled by other writing systems.

Strain-tunable electronic and transport properties of MoS2 nanotubes

Using density functional theory calculations, we have investigated the mechanical properties and strain effects on the electronic structure and transport properties of molybdenum disulfide （MoS2） nanotubes. At a similar diameter, an armchair nanotube has a higher Young＇s modulus and Poisson ratio than its zigzag counterpart due to the different orientations of Mo-S bond topologies. An increase in axial tensile strain leads to a progressive decrease in the band gap for both armchair and zigzag nanotubes. For armchair nanotube, however, there is a semiconductor-to-metal transition at the tensile strain of about 8%. For both armchair and zigzag nanotubes, the effective mass of a hole is uniformly larger than its electron counterpart, and is more sensitive to strain. Based on deformation potential theory, we have calculated the carrier mobilities of MoS2 nanotubes. It is found that the hole mobility is higher than its electron counterpart for armchair （6, 6） nanotube while the electron mobility is higher than its hole counterpart for zigzag （10, 0） nanotube. Our results highlight the tunable electronic properties of MoS2 nanotubes, promising for interesting applications in nanodevices, such as opto-electronics, photoluminescence, electronic switch and nanoscale strain sensor.