敦煌文献“左南直北”考辨

在敦煌契约文献中,"左南直北"有两个意义:一是四处闲逛,不专心工作;二是不听话,不顺从。义为四处闲逛,不专心工作的"左南直北",与义为或南或北,比喻不专一、不固定的"南北"相关。义为不听话、不顺从的"左南直北",与义为相反、违背的"左"相关。当"左"表示相反、违背义时,"直"或作为状语修饰"北"。"直北"相当于"北";或"直"义同"左"义为相反、违背。

基于GIS的《读史方舆纪要》地名文化景观空间分布研究——以“南直隶”为例

明末清初顾祖禹《读史方舆纪要》是一本以地名为载体,记载历史自然地理与历史人文地理的巨著。文章以其中有关“南直”地区(相当今江苏、安徽、上海)记载的地名作为研究对象,运用GIS技术分析发现,区域内的差异反映了基于自然条件、交通条件与区位条件的不同而产生的文化景观。自然景观类地名主要集中在长江沿线和江南地区,反映该区域低山丘陵较多,河流水系发达的地貌景观;文化景观类地名集中在应天府及京杭大运河沿线,反映出该区域经济发达,人才辈出的人文特色,以及规划建设完备,功能区完善的城市风貌。该项研究有助于了解明代南直地区的地名文化景观的特色及其分布,这种方法也可以用于其他区域的历史地理景观研究。

明代南直地区具有自然人文景观特征的地名研究

明代南直地区是国家政权核心区域之一,其地名文化景观不但直接反映明代南直地区的政治、经济、文化、军事的发展建设情况,也能在一定程度作为明朝两百多年的历史缩影。具有自然景观特征的地名可分为地形水文、动植物、经济、军事、建筑、工程、姓氏等类,反映出南直水系发达、低山丘陵众多、植被多样性等自然景观特征;文化景观类地名则展现了南直地区在明代军事海防部署严密、商业贸易发达、人口众多、建筑密集和人文气息浓厚等文化景观特征。此项研究有利于还原当时南直地区的历史环境,对当下进行历史地名研究、保护历史文物、传承和发扬地方文化等都具有深远的意义。

Model and Practice of Vertical Greening in Nanchang City

Vertical greening is a new model to broaden urban green space in Nanchang City. Baded on the narration of the concept of vertical greening, all kinds of ways to carry out the vertical greening in Nanchang, as well as the available patterns, were explored by combining with the natural climatic conditions in Nanchang City, and then the current commonly used vertical greening plant varieties as well as their application value were introduced, which provided a new way of thinking for urban greening of Nanchang City.

Exploitation technology of pressure relief coalbed methane in vertical surface wells in the Huainan coal mining area

Exploitation technology of pressure relief coalbed methane in vertical surface wells is a new method for exploration of gas and coalbed methane exploitation in mining areas with high concentrations of gas, where tectonic coal developed. Studies on vertical surface well technology in the Huainan Coal Mining area play a role in demonstration in the use of clean, new energy resources, preventing and reducing coal mine gas accidents and protecting the environment. Based on the practice of gas drainage engineering of pressure relief coalbed methane in vertical surface wells and combined with relative geological and exploration en- gineering theories, the design principles of design and structure of wells of pressure relief coalbed methane in vertical surface wells are studied. The effects of extraction and their causes are discussed and the impact of geological conditions on gas production of the vertical surface wells are analyzed. The results indicate that in mining areas with high concentrations of gas, where tectonic coal developed, a success rate of pressure relief coalbed methane in surface vertical well is high and single well production usually great. But deformation due to coal exploitation could damage boreholes and cause breaks in the connection between aquifers and bore-holes, which could induce a decrease, even a complete halt in gas production of a single well. The design of well site location and wellbore configuration are the key for technology. The development of the geological conditions for coalbed methane have a significant effect on gas production of coalbed methane wells.

Two new species of the genus Cobitis Linnaeus(Teleostei:Cobitidae) from southern China

Two new species of the genus Cobitis from southern China,C.hereromacula from the Luohe River in Guangdong Province and C.baishagensis from the Nandujiang River in Hainan Province,are described and illustrated here.C.hereromacula can be distinguished from its congeners by possessing the following combination of characteristics;absence of the second and third pigmentary zones of Gambetta;13–16 oval blotches on the dorsum and 10–13 vertical,elongated triangular blotches below the midlateral line with more than 20 vertical dark brown bars between them;6–7 narrow rows of dark spots on the caudal fin;a vertical oval spot smaller than the eye diameter on the upper part of the caudal peduncle;pointed mental lobes of the lower lip pointed with a slightly filiform tip;one slender and long needle-shaped lamina circularis at the base of the first branched ray of the male pectoral fins.C.baishagensis can be distinguished from its congeners by the fourth Gambetta zone being covered by 10–12 transverse elongated blotches;4–5 narrow rows of dark spots on the caudal fin;a vertical blotch smaller than the eye diameter on the upper part of the caudal peduncle;males with a slender and long needle-shaped lamina circularis at the second branched pectoral fin ray in males;large scales with a slightly large focal zone;undeveloped mental lobes with a lower lip that does not end posteriorly in a filiform tip.

Distribution of Vertical Turbulent Mixing Parameter Caused by Internal Tidal Waves and Solitary Waves in the South Yellow Sea

Many observations show that in the Yellow Sea internal tidal waves (ITWs) possess the remarkable characteristics of internal Kelvin wave, and in the South Yellow Sea (SYS) the nonlinear evolution of internal tidal waves is one of the mechanisms producing internal solitary waves (ISWs), which is different from the generation mechanism in the case where the semidiurnal tidal current flows over topographic drops. In this paper, the model of internal Kelvin wave with continuous stratification is given, and an elementary numerical study of nonlinear evolution of ITWs is made for the SYS, using the generalized KdV model (GKdV model for short) for a continuous stratified ocean, in which the different effects of background barotropic ebb and flood currents are considered. Moreover, the parameterization of vertical turbulent mixing caused by ITWs and ISWs in the SYS is studied, using a parameterization scheme which was applied to numerical experiments on the breaking of ISWs by Vlasenko and Hutter in 2002. It is found that the vertical turbulent mixing caused by internal waves is very strong within the upper layer with depth less than about 30m, and the vertical turbulent mixing caused by ISWs is stronger than that by ITWs.

Seasonal variation in abundance, diel vertical migration and body size of pelagic tunicate Salpa fusiformis in the Southern Yellow Sea

Mass occurrence of Salpafusiformis June 2007. In order to investigate its population was observed in the Southern Yellow Sea in May and recruitment and environmental adaptation, temporal variation of abundance, diel vertical migration （DVM） and length frequency distribution of both aggregate and solitary forms were studied with samples collected from eight months during September 2006 to August 2007. S. fusiformis presented in six months other than September and October 2006, and average abundance of aggregate and solitary forms peaked in June and May, respectively. In December, aggregate forms were absent in the bottom layer and performed irregular DVM from surface to 50 m depth, while solitary forms was too scarce to perform diel vertical distribution analysis. Both aggregate and solitary forms presented reverse DVM in May and June. They migrated upwards during daytime and concentrated in surface layer at sunset. The bimodal distribution of aggregate forms was found in April and the average size was largest in this month. In other months, the smaller aggregate forms （1-5 ram） dominated in populations except for May, when the modal size ranged from 2 to 8 mm. The average size of solitary forms was largest in December, followed by April. The skewed nomal distribution of solitary forms was found in May and June, with the modal size of 2-7 mm and 5-13 ram, respectively.

The Impact of the World Trade Organization （WTO） Regime on Foreign Direct Investment （FDI） Flows to Vietnam： A Gravity Model Approach

Foreign direct investment （FDI） has taken an important role in Vietnam＇s development process since the launch of Renovation in 1986. After Vietnam＇s accession to the World Trade Organization （WTO）, a large amount of FDI capital flowed into the country, up to 143,950.3 million USD. Wherein, there was a switching of FDI capital from the manufacturing sector to the service one in tandem with a downward trend in the agriculture. Like the previous duration, Vietnam＇s FDI capital sources came mostly from Asia-Pacific region and European economies （net capital, technology exporters） probably caused by Vietnam＇s integration emphases on dynamic Asia-Pacific region. Geographical location of FDI was characterized by a concentration on the three main key economic regions： the Red River Delta （surrounding Ha Noi, Hai Phong, and Quang Ninh）, the Central region （surrounding Da Nang）, and the Southeast of the country （surrounding Ho Chi Minh City） owing to good infrastructure, abundance of skillful labor force, and large market size. By constructing a gravity model, using descriptive, quantitative methods and applying them to recent data set by Vietnam＇s authorities and the international organizations during the period from 1995 to 2011 of 18 Vietnam＇s major country partners, the author finds evidence broadly consistent with the prediction that the WTO has had a positive impact on FDI flows to Vietnam.

Freshening of the intermediate water of the South China Sea between the 1960s and the 1980s

Variation in intermediate water salinity in the South China Sea (SCS) between the 1960s and 1980s was studied using historical hydrographic data. The results demonstrate that the water was significantly fresher in the 1980s than in the 1960s, indicating that vertical mixing at intermediate water depth was reduced in the 1980s. This was partially because of the change of the SCS meridional overturning circulation (MOC) connecting local intermediate water with deep water. Data assimilation showed a 0.5Sv (1 Sv=10 6m 3/s) reduction in the strength of the MOC, which is about one third of the mean SCS MOC. Because the SCS MOC is linked to the Pacific Ocean, such an interdecadal variation in the intermediate water SCS may reflect anthropogenic climate change in the world ocean.

Clinicopathologic Analysis of 2,889 Nanchang-Area Patients with Colorectal Polyps

OBJECTIVE To study the clinicopathologic characteristics, changes in the nature and incidence of colorectal polyps in the Nanchang area, Jiangxi, Province. METHODS We retrospectively investigated the patients with colorectal polyps who were diagnosed by colonoscopy and pathology in our hospital from 1990 to 2004. The analysis involved the incidence, average patient age, polyp location and pathological types. We recorded the changes of the polyp clinicopathologic features by comparing the clinicopathologic types of colorectal polyps over fi ve-year periods. RESULTS Of the 21,853 patients who received a colonoscopy, 2,889(13.2%) were diagnosed with colorectal polyps. Their average age was 46.6±16.5 years, with a male to female ratio of 1.8:1. The males were older than females (47.1±17.5 vs. 45.5±14.5, P<0.05). Location of the polyps: 41% in the rectum, 27.7% in the sigmoid colon, 35.8% in the left side verus 23.1% in the right side (P<0.05). Patients with polyps located in the transverse and ascending colon were older than those with polyps in the rectum and sigmoid colon (P<0.05). Adenomatous polyps comprised the most common type (67%) and the rectum was the most common site for each type, especially juvenile and retention polyps. Juvenile polyps were found in the youngest patients(12±4.8, P<0.05) and the adenomatous in the oldest (52±14, P<0.05). The ratio of patients with polyposis comprised 1.2%, and patients with polyps accompanied with colorectal cancer comprised 6.1%. Examination of the changes in the incidence, the average patient age, and adenomatous type showed that they had all increased, but the frequency of infl ammatory and retention polyps decreased. CONCLUSION Colorectal polyps are a common problem. The frequency is greater in males compared to females and the rectum and sigmoid colon had the highest incidence. Most juvenile and retention polyps were found in young patients, but most adenomatous occurred in adults. In recent years, the incidence of colorectal polyps, the average patient age, and the adenomatous type have increased in the Nanchang area, but inflammatory and retention types decreased.

Assessment of Individual Direct Radiative Effects of Major Aerosol Species in East Asia

To assess individual direct radiative effects of diverse aerosol species on a regional scale, the air quality modeling system RAMS-CMAQ （Regional Atmospheric Modeling System and Community Multiscale Air Quality） coupled with an aerosol optical properties/radiative transfer module was used to simulate the temporal and spatial distributions of their optical and radiative properties over East Asia throughout 2005. Annual and seasonal averaged aerosol direct radiative forcing （ADRF） of all important aerosols and individual components, such as sulfate, nitrate, ammonium, black carbon （BC）, organic carbon （OC）, and dust at top-of-atmosphere （TOA） in clear sky are analyzed. Analysis of the model results shows that the annual average ADRF of all important aerosols was in the range of 0 to -18 W m-z, with the maximum values mainly distributed over the Sichuan Basin. The direct radiative effects of sulfate, nitrate, and ammonium make up most of the total ADRF in East Asia, being concentrated mainly over North and Southeast China. The model domain is also divided into seven regions based on different administrative regions or countries to investigate detailed information about regional ADRF variations over East Asia. The model results show that the ADRFs of sulfate, ammonium, BC, and OC were stronger in summer and weaker in winter over most regions of East Asia, except over Southeast Asia. The seasonal variation in the ADRF of nitrate exhibited the opposite trend. A strong ADRF of dust mainly appeared in spring over Northwest China and Mongolia.

An interdecadal change of tropical cyclone activity in the South China Sea in the early 1990s

Tropical cyclone （TC） genesis in the South China Sea （SCS） during 1979-2008 underwent a decadal variation around 1993. A total of 55 TCs formed in the SCS from May to September during 1994- 2008, about twice that during 1979-1993 （27）. During the TC peak season （July-September, JAS）, there were 43 TCs fi＇om 1994-2008, but only 17 during 1979-1993. For July in particular, 13 TCs formed from 1994-2008, but there were none during 1979-1993. The change in TC number is associated with changes of key environmental conditions in atmosphere and ocean. Compared to 1979-1993, the subtropical high was significantly weaker and was displaced more eastward during 1994-2008. In the former period, a stronger subtropical high induced downward flow, inhibiting TC formation. In the latter period, vertical wind shear and outgoing longwave radiation all weakened. Mid-level （850-500 hPa） humidity, and relative vorticity were higher. Sea surface temperature and upper layer heat content were also higher in the area. All these factors favor TC genesis during the latter period. The decadal change of TC genesis led to more landfalling TCs in Southern China during the period 1994-2008, which contributed to an abrupt increase in regional rainfall.

Foreign Direct Investments, Environmental Sustainability, and Strategic Planning： A Local Perspective

The present work constitutes further explorations on Foreign Direct Investments （FDI） and environmental quality linkages and a starting point in the strategic planning process in the metropolitan area of Bari （the main province of the Apulia region in southern Italy） in the context of transfrontier commercial cooperation. A panel data analysis is used to show either the existence of the relationships across FDI, economic and environmental variables or their nature across provinces and time （fixed or random effect model）. Model results suggest that diversification of policies across provinces would be more effective in the strategic planning process of a metropolitan city.

Compliance of Documentation Transfer Pricing Requirements in Foreign Direct Investment Enterprises in Vietnam

The increase of inter-boundary transactions brings a number of benefits for enterprises. However, even when benefits of transfer pricing are evident, multinational organizations still face legal challenges, including performing parts of transactions in another jurisdiction and motives of tax officials in investigating transfer pricing. This is especially true when countries do not want to lose benefits from tax collection. Therefore, many countries and organizations such as the Organization for Economic Cooperation and Development （OECD）, Pacific Association of Tax Administrators （PATA）, the European Union （EU）, and Vietnam have introduced requirements for transfer pricing documentation to prevent transfer pricing manipulation and maintain benefits from taxes. The aim of this research was to assess the compliance of those requirements of foreign direct investment （FDI） enterprises in Vietnam. This article which is a summary of our research includes the following sections： （1） OECD guidelines of transfer pricing documentation; （2） Vietnam regulations of transfer pricing documentation; （3） results of the research; and （4） discussion and conclusion.

Study on Transmission Planning of Cascade Hydropower Stations along Lancang River Basin

Most of the hydropower projects in Southwest China and the adjacent foreign regions will be put into operation between 2015 and 2020, which will bring some difficulties for reasonable accommodation and delivery of electric energy. In this paper the author studies the development scale, development schedule, accommodation and transmission schemes of the cascade hydropower stations along the Lancang River basin, one of the five large basins in China, based on the load characteristics of grids at both the sending end and the receiving end, the strategy of complementary utilization of thermal power and hydropower, the advanced transmission technologies, and the optimal economic performance. The study results show that, the cascade hydropower stations on the upper reaches of the Lancang River in Yunnan should mainly serve Guangdong Province, with proper planning of partly serving Yunnan Province during dry seasons. The transmission schemes should adopt UHVDC, UHVAC, and single-tower double-circuited HVDC transmission scheme according to the transmission capacity and distance.

The North-South Seismic Belt： Vertical Deformation Velocity Gradient Research

The vertical deformation gradient can reflect the rate of vertical change in unit distance,and the vertical deformation velocity gradient can reflect the strength of the earth's crust tectonic activities. In this paper,using long period leveling data combined with GPS data,the vertical deformation gradient values are calculated. Leveling data and GPS data are two different means of monitoring deformation,but the result is approximately the same vertical deformation gradient. The results show that the spatial distribution of the vertical deformation velocity gradient and tectonic distribution has an obvious correlation. The most significant gradient anomalies along the North-South Seismic Belt are Xianshuihe fault, Longmenshan fault and Xiaojiang-Zemuhe fault, while the second gradient anomalies in the northeastern Qinghai-Tibetan plateau are Zhuanglanghe fault and Lenglongling fault. The Menyuan M_S6. 4 earthquake in 2016 occurred in this abnormal area. However,according to the vertical deformation high gradient area distribution,there is also the possibility of an earthquake occurrence in the Tianzhu and Jingtai area.The area of convergence of three major fault zones is the strongest tectonically active region of the North-South Seismic Belt.

东北茶市面临“大洗牌”

江南的绿叶,能搅动东北人的精气神。早春二月,浙江永嘉的茶山,满园嫩绿的颜色。受今年天气早暖影响,春茶上市比往年来得早些。在茶人的眼里,那些尚且挂在枝头的绿叶,似乎已经飘荡出春茶的茗香。3月10日上午,哈尔滨南直茶叶批发市场的张发勇,早早地关注这一信息。作为从事茶叶生意十多年的他.

The vertical structure and seasonal changes of atmosphere ozone and temperature at Zhongshan Station over East Antarctica

The vertical structure of the atmospheric ozone and temperature as well as the seasonal variations is presented by using ozone sounding data at Zhongshan Station over East Antarctica from February, 2008 to February, 2009. The results show that the heights of thermal tropopause and ozone tropopause are mostly the same with yearly mean 7.9 and 7.4 km separately above the station. There is obvious seasonal variation in the pressure and temperature of the tropopause, manifested by the clear one-wave pattern with an opposite phase. As the turning point of the tropopause temperature is visible in autumn and faint in spring and winter, the tropopause height can be better confirmed by utilization of the changes of ozone. Seasonal variation of the tropospheric ozone of vertical distribution is not clear, relative to stratosphere. In the spring, ozone in the low level of stratosphere lost seriously. The minimum partial ozone in 14 km was 1.57 MPa only and the maximum partial ozone occurred in the up level stratosphere. In the rest of the season the ozone increases with height rising in the low level of stratosphere. The evidence shows that ozone lost in spring is closely related with low temperature of polar night and the process of PSC photochemical destruction ozone in the stratosphere. From the vertical characteristics and seasonal variation of ozone and temperature, it is meaningful to understand formation and development of Antarctic ozone deletion.

Comparison of guidelines on rectal cancer:exception proves the rule?

The standard of care for early or locally advanced rectal cancer is promoted by multiple clinical practice guidelines globally,but the considerable differences between the guidelines may cause confusion.We compared the latest updated clinical practice guidelines from five professional societies/authorities:National Comprehensive Cancer Network,American Society of Colorectal Surgeons,European Society of Medical Oncology,Chinese National Health Commission,and Chinese Society of Clinical Oncology.Key evidence is discussed for a better understanding of some seemingly contradictory recommendations.