社会主义要有“资本市场”

‘资本市场’是包括证券交易场所在内的中、长期资金市场,在这个市场上进行的是货币和产权的交易。这个市场的作用,是通过产权的转让,把资金集中到经济效益最好的方向。作者认为,我国经济改革中出现的农民合股集资办企业,国营企业自有资金的出现,银行开始发放设备贷款、国家发行债券,部门、地区、企业之间的资金协作,共同指出了我国要不要有一个‘资本市场’的问题。

赵城金藏本《广弘明集》疑难字考释举例

通过对赵城金藏本《广弘明集》经文中那些形体变易难以辨识和书写讹误难以发现的疑难字进行考释与研究,论文认为赵城金藏本《广弘明集》卷三“光禄大夫刘向及子仍、歆等”之“仍”当为“伋”之形误,卷一六“自非淬德潜衍”之“淬”当为“沛”之形误,卷一八“吾常以为殊太徑■”之“■”疑为“鋌”字俗讹,卷三〇“浮光映■池”之“■”当为“寶”之俗讹,卷三〇“腾波■漂客”之“■”当为“濟”之俗讹。在此基础上,提出赵城金藏本《广弘明集》疑难字考释在研究赵城金藏经文用字、整理《广弘明集》文本等方面所具有的重要价值和意义。

CHIP FORMATION MODEL OF TITANIUM ALLOYS

The chip deformation of titanium alloys is typical shear localization from low cutting speed, which is general phenomenon in machining of difficult to cut material at high cutting speed. This paper investigates the chip formation process in machining titanium alloys, and puts forward a three stage model describing formation process of shear localized chip. This model explains how the shear localized chip segments initiate, become trapezoid and form serrated chips.

安徽个私经济第一镇——天长市秦栏镇

秦栏镇位于安徽省最东端,濒临高邮湖,伸入江苏腹地。处在天长市东南隅,东与江苏省高邮市、扬州市、仪征市毗邻,西与界牌镇、仁和、金集、渝兴接壤。紧靠宁镇扬,邻近苏锡常,位置独特,窗口作用显著,素有"安徽东大门"之称。

Migration and transfer of chromium in soil-vegetable system and associated health risks in vicinity of ferro-alloy manufactory

Study was carried out to analyze the distribution and migration patterns,soil-to-plant transfer and potential health risks of chromium in soil-vegetable system in areas near a ferro-alloy manufactory in Hunan province.The results show that soils near sewer outlet,sewer channel and in control area are averaged 2 239.5,995.33 and 104.9 mg/kg,respectively.The total Cr has a relative accumulation in soil depth of 200-400 mm near the sewer outlet,mainly enriches in the surface layer（0-200 mm） near the sewer channel and decreases gradually in unpolluted soils.The differential concentration level of enrichment between layers is little.The results also indicate that the three vegetables of celery,lettuce and Chinese cabbage are able to convert the potentially toxic Cr（Ⅵ） species into the non-toxic Cr（Ⅲ） species,and the chromium contents in the edible parts of the vegetables are averaged 11.95 mg/kg.The transfer factors of the three vegetables follow the order：Chinese cabbage lettuce celery.The estimated total daily intake of chromium substantially exceeds the dietary allowable value,which may pose health risks to local population.

Heavy metal distribution patterns and environmental quality assessment of the mariculture areas in Nanao,Shantou

The Fe, Zn, Mn and Pb concentrations in the seawater dissolved phase were investigated in the sea-surface microlayer （SML）, subsurface water （SSW） and bottom water （BW） samples collected at of three mariculture areas of the Nanao Island ocean zone. The results showed that the SML and the BW were important compartments for these heavy metals in the mariculture areas and the concentrations varied from 23.0 μg/L to 268.0 μg/L（Fe）, 11.0 μg/L to 82.2 μg/L（Zn）, 1.5 μg/L to 11.0 μg/L（Mn） and 6.0 μg/L to 40.5 μg/L（Pb） in SSW, while a clear enrichment is observed in the SML, where these ranged from 27.5 μg/L to 286.5 μg/L（Fe）, 13.5/lg/L to 89.0μg/L（Zn）, 3.0μg/L to 12.0 μg/L（Mn） and 7.0 μg/L to 46.0μg/L（Pb）. The enrichment factors were in the range of 1.07 - 1.39 which showed a slight enrichment. The average enrichment factors of Fe, Zn, Pb and Mn were 1.18, 1.13, 1.12 and 1.30, respectively. The average enrichment factors in shellfish, fish and gracilaria lemaneaformis farming areas were 1.26, 1.19 and 1.11, respectively, which showed that the surface activity was highest in the shellfish farming area. Furthermore, the heavy metals concentrations were lowest in the gracUaria lemaneaformis farming area. The results of single factor contamination index showed that the investigated areas were slightly contaminated with Zn, while the partial farming areas were seriously contaminated with Pd during a certain period of time.

“寸木寸金”之紫檀

据史料记载:紫檀木,出扶南,色紫,亦谓之紫檀。明代永乐初年,明成祖朱棣派郑和满载绫罗绸缎七下西洋布施,归来时为防风浪摇摆过大而翻船,便用产于东南亚的紫檀充当压舱物,于是不少紫檀木就这样被运回了中国。紫檀因其品质上乘倍受皇家珍视,皇上也不惜重金集天下之能工巧匠打造各种紫檀家具、饰物,遂开始大规模采伐。

葡萄采摘后园地管理技巧

近年来,随着清水县红堡、金集、郭川三乡镇葡萄栽植面积的逐年增加,葡萄产业已成为这三乡镇农民增收的又一大亮点。但对于采收后的园地管理,却是大部分果农比较容易忽视的问题。本文针对清水县三个葡萄主产区葡萄采收后粗放式的园地管理现状,摸索出了一套适合清水县葡萄采收后的园地技术管理措施。

陕西省洛南县许家台金矿地质特征及成因探析

许家台金矿地处华北南缘构造带南侧的小秦岭金矿集区内,介于洛南-栾川大断裂与太要大断裂之间,其板块构造环境相当于后弧岩浆带位置,主成矿期为燕山晚期陆内俯冲后弧伸展-塌陷期,矿床类型主要为石英脉型。成矿条件十分有利,南北宽45-195km,东西长度大于598km,矿集区面积大于9.8万平方公里。大致以巡马道一小河-朱阳断裂为界,其北部为金矿集区,已发现金矿床超过100处,探明储量达约650吨。

Resistivity Instability in Polysilicon Resistors Under Metal Interco-nnects and Its Suppression by Compensating Ion Implantation

The resistivity instability of the boron-doped polysilicon resistors being a line resistance element of ICs is within the range of several kΩ's,especially when our running the underneath metal interconnects.Polysilicon resistors have been fabricated under various processing conditions as well as some electrical and crystallographic characteristics have been obtained.It is shown the resistivity instability mainly results from the variational carrier mobility.By analyzing the Seto's model,the barrier height and trapped charge density are observed reducing under the Al over layer.Therefore,the resistance instability is also caused by both the charge trapping/detrapping occurring at polysilicon grain boundaries and the resultant variation in the potential barrier height.The formation of high-stability polysilicon resistors in the range of several kΩ's has been decided by compensating the ion implantation,which makes the charge trapping/detrapping at the grain boundary less susceptible to the hydrogen annealing.

Comparison of Absorption Capacity of Different Flue-cured Tobacco Cultivars for Six Kinds of Heavy Metals

[Objective] This study aimed to analyze the differences in absorption capacity of different flue-cured tobacco cultivars for chromium （Cr）, arsenic （As）, cadmium （Cd）, lead （Pb）, mercury （Hg） and copper （Cu）. [Method] With 4 flue-cured tobacco cultivars as the experimental materials, their absorption capacity for 6 kinds of heavy metals was compared by pot experiment. [Result] There were great differences in absorption capacity of different flue-cured tobacco cultivars for the six kinds of heavy metals. According to the absorption capacity of different flue-cured tobacco cultivars for the heavy metals, the six heavy metals could be classified into three categories. The first category included only Cd with average enrichment coefficient of 8.564; the second category included Hg with average enrichment coefficient of 0.753; and the third category included Cr, As, Pb and Cu with average enrichment coefficients below or equivalent to 0.114. [Conclusion] The absorption capacity of different flue-cured tobacco cultivars for heavy metals was grasped by this study, thereby providing reference data for screening of high-yielding and high-quality flue-cured tobacco cultivars.

Effect of additives on growth of ferronickel grains and metal-slag separation behavior

Na_(2)S,Na_(2)CO_(3),FeO,FeS and carbon were used to regulate the properties of slag or metal fractions,and their effects on metal growth and metal–slag separation behavior were investigated.The growth of ferronickel grains can be enhanced by adding these additives,and Na_(2)S was the most effective.Na_(2)S,Na_(2)CO_(3) and FeO mainly affected the properties of slag,while carbon and FeS affected the metal fraction.The onset temperature of metal–slag separation was 1297℃ for the sample without additive,which was decreased to 1123 and 1101℃ after adding 3.30 wt.%Na_(2)S and 4.47 wt.%Na_(2)CO_(3),respectively.The onset temperature of metal–slag separation was mainly controlled by the slag fraction.The average apparent activation energy of metal grain growth was 125.32 kJ/mol without additive,and it decreased obviously after adding different additives.Na_(2)S also had the most remarkable effect on the decrease in activation energy.

Zinc and copper bioaccumulation in fi sh from Laizhou Bay, the Bohai Sea

Abstract Zinc （Zn） and copper （Cu） concentrations were determined in the tissues （muscle, stomach, liver, gills, skin, and gonads） of five commercial fish species （mullet Liza haematocheilus, flathead Platycephalus indicus, mackerel Scomberomorus niphonius, silver pomfret Pampus argenteus, and sea bass Lateolabrax japonicus） from Laizhou Bay in the Bohai Sea. Metal bioaccumulation was highest in the metabolically active tissues of the gonads and liver. Bioconcentration factors for Zn were higher in all tissues （gonads 44.35, stomach 7.73, gills 7.72, liver 5.61, skin 4.88, and muscle 1.63） than the corresponding values for Cu （gonads 3.50, stomach 3.00, gills 1.60, liver 5.43, skin 1.50, and muscle 0.93）. Mackerel tissues accumulated metal to higher concentrations than did other fish species, but bioaccumulation levels were not significantly correlated with the trophic levels of the fish. Zn and Cu concentrations in the tissues were generally negatively correlated with fish length, except for a few tissues of sea bass. Risk assessment based on national and international permissible limits and provisional tolerances for weekly intake of Zn and Cu revealed that the concentrations of these two metals in muscle were relatively low and would not pose hazards to human health.

An Improved On-Chip CMOS Astable Multivibrator

An improved on-chip CMOS astable multivibrator is proposed, which overcomes the shortcomings of the traditional one that the signal duty-cycle is depending on model parameters, and generates stable clock signal with duty-cycle equaling 50%. The latch-up effect has been prevented on the improved circuit. It is extremely important that all the excellent performances of the improved astable multivibrator have been achieved with a dynamic power consumption equaling its predecessor one. The advantage of the structure has been verified by SPICE simulation.

A High-Performance Silicon Electro-Optic Phase Modulator with a Triple MOS Capacitor

We propose and analyze a novel Si-based electro-optic modulator with an improved metal-oxide-semiconductor （MOS） capacitor configuration integrated into silicon-on-insulator （SOl）. Three gate-oxide layers embedded in the silicon waveguide constitute a triple MOS capacitor structure, which boosts the modulation efficiency compared with a single MOS capacitor. The simulation results demonstrate that the Vπ Lπ product is 2. 4V · cm. The rise time and fall time of the proposed device are calculated to be 80 and 40ps from the transient response curve, respectively,indicating a bandwidth of 8GHz. The phase shift efficiency and bandwidth can be enhanced by rib width scaling.

Research on Mechanism of Diversified Investment and Financing in Building Ecological Cities

Ecological city is the advanced mode of harmonious development of city. Constant improvement is being made in the development of ecological city. However, building ecological city is an enormous project that calls for a huge amount of capital. The government fund is far from adequate. This paper probes into the fund issue and discusses in detail the mechanism of investment and financing in building ecological city from various aspects such as diversification of the investment subjects and the modes of financing.

Comparative study of various internal fixation methods for treating patellar fractures by three-dimensional photoelasticity

Objective: To compare the biomechanical basis of 3 different internal fixation methods: nitinol patellar concentrator (NT-PC), tension band and wire circle in treating patellar fractures. Methods: The epoxy resin three dimensional photoelasticity patellar models were made by precise moulding, and were fixated by nitinol patellar concentrator (NT-PC), tension band and wire circle respectively. The patellar models with frozen stress stripes were put into the polarized light field and the stress distributions were compared. As for the model fixated by NT-PC, by dividing layer, photographing and tracing, we used the iterative method to calculate the stress value of every internal node of the epoxy resin patellar model, and the character of stress was analyzed. Results: An overall stress field was yielded when the patellar model was fixated by NT-PC, and the stripes were more than that of tension band model and wire circle model, which have only few stress stripes in the fixated layers. Further analysis indicated that there were continuous fixated stresses in the facies articularis and distal pole of patella, and the character of stresses produced by NT-PC were mainly in longitudinal direction, then in transverse direction. The shearing stresses were small. Conclusion: The initiative and continuous memorial stress of NT-PC and its overall stress distribution character are the essence of NT-PC distinguished with tension band and wire circle in treating patellar fractures. The stress character produced by NT-PC is good for the stability of fracture site and prompts fracture healing.

Performance-driven Routing Tree Construction with Buffer Insertion and Wire Sizing

A new approach was proposed to construct a performance-driven rectilinear Steiner tree with simultaneous buffer insertion and wiresizing optimization (PDRST/BW) under a higher order resistance-inductance-capacitance (RLC) delay model. This approach is based on the concept of sharing-buffer insertion and dynamic programming approach combined with a bottom-up rectilinear Steiner tree construction. The performances include the timing delay and the quality of signal waveform. The experimental results show that our proposed approach is scalable and obtains better performance than SP-tree and graph-RTBW approaches for the test signal nets.

Information technology research and situation of corporate development financial management

to actively promote corporate financial management information technology is not only to explore effective ways to centralized management of enterprise funds, but also in strengthening corporate governance, deepening of enterprise reform. Standardizing the process of establishing a modern enterprise system is an important work. Especially with the deepening of the reform of state-owned enterprises and China＇ s accession to the WTO, and actively promoting financial management information technology, they not only help to strengthen internal financial management and financial monitoring. Thereby it can improve capital efficiency and achieve risk control, but also it has a very important practical significance and far-reaching strategic significance in enhancing the core competitiveness of Chinese enterprises to actively participate in international competition. This paper analyses the financial management of the enterprise information technology problems and also come up to speed up strategies of the corporate financial management information technology.