Dating of sediment-hosted disseminated-type gold deposit by using ~(40)Ar/~(39)Ar laser probe: A case study of Changkeng large-scale gold deposit, China

Ore-forming age is one of the most important data in studying the genesis of mineral deposits. Dating of sedi-ment-hosted disseminated-type gold deposits, which areone of the most important types of gold deposits in theworld, is always a difficult task for ore geologists. Themajor reason is that most of the ores in this type deposit are of various siliceous and are composed of extremely fine-grained minerals, thus it will be very difficult to de-termine their ages by using conventional isotopi…     

Analysis of the Reliability of the Dissected Frame of Heavy Equipment

<正>Introduction The large-scale frame has many industrial applications. It is one of the most important components used in rolling, die forging, extrusion, and free forging. How-ever, once the frame can no longer perform its function, the whole press must be discarded[1]. The conversion of immense force and energy is accomplished within     

Assessing the meridional atmosphere and ocean energy transport in a varying climate

Assessing the meridional atmosphere and ocean energy transport is one of the most classical problems in climate research.The meridional energy transport plays a critical role in maintaining the equilibrium of the earth system.Although the principle to calculate the meridional energy transport is simple,many fundamental questions remain unsolved.For example,what are the intrinsic mechanisms to maintain the hemispherically antisymmetric structure in the total energy transport? How on earth does the meridional energy transport partition between the atmosphere and ocean and,is there really a so-called "Bjerknes compensation" relationship between them? This relationship would provide us deep insight into the coupling mechanisms between the ocean and atmosphere in global scale.In this review we try to come out some important problems that are deserved in-depth investigations in current climate studies.     

Editorial note

正Energy is one of the most important and challenging global issues faced by our society over the next50–100 years.It is of urgent need to develop reliable technologies to meet the world’s future energy demands efficiently and sustainably.As enabling components of the energy supply technologies,advanced materials hold the key for a new generation of renewable energy conversion and storage systems.This special issue aims to provide a     

PREPARATION OF VARIOUS TYPES OF PULP FROM OIL PALM LIGNOCELLULOSIC RESIDUES

INTRODUCTION Oil palm, Elaeis Guineensis, (Figure 1) is one of the most important plants in Malaysia. It produces palm oil and palm kernel oil, which is widely being used in food and other industries such as detergents and cosmetics. Malaysia is the world′s largest producer and exporter of the oil, so that the country′s economy is very much dependent on these oil products. Although oil from the palm tree is an excellent product for the country, residues from oil palm have not been used sufficiently. In this 10～15 years, development in new technologies for utilizing this lignocellulosic waste is categorized as one of the most important issues in science policy of Malaysia.     

The occurrence of the genus Marrella(Trilobitoidea) in Asia

An important discovery in the Kaili Biota has been made recently, and many interesting components from ChengjiangBiota and Burgess Shale Biota have been discovered. Among them Marrella, only known from mid-Middle Cambrian Burgess Shale Biotaof British Columbia, Canada, is one of the most important arthropods fossils. Because the Kaili Biota is older than the Burgess Shale Biota,the strange head shield of Marrella occurring in the Kaili Biota outside Laurentia ranges from mid-Middle Cambrian to early Middle Cam-brian and is significant for the reconstruction of palaeogeography and evolutionary study of early metazoa. In the present paper Marrellasp. is reported for the first time in Asia.     

Charge Pump for LCD Driver Used in Cell Phone

IntroductionDue to the fast growth of the mobilecommunication market,the competition in thisbusiness is very intense.The display still remainsas one of the most importantparts requiring driverICs with better performance and lower cost.Sincethe DC- DC converter is one of the most importantcomponents for achieving the requirement,thispaper aims at designing a sophisticated voltageconverter.　The most important advantage of charge pumpsas a voltage converter is their high efficiency andamenabi…     

综合利用水电站水库■流调节的数值解法(英文)

The Numerical Solution of the Flow Regulation of theWater Power Station of Multipurpose Utilization ReservoirChen ShouyuStream flow regulation is one of the most important technical measures indeveloping water resources and in controlling river system. To constructreservoirs on a river to regulate the runoff is an active way to reconstructthe natural water resources. In order to realize such an engineering measure,one must investigate the theory and method of flow regulation, so as to get…     

Finding of Neoproterozoic low-<Superscript>18</Superscript>O igneous rocks in the northern margin of the Dabie orogen

It has been one of the most intriguing questions in the earth sciences whether the snowball Earth event is genetically associated with mantle superwelling, supercontinent assemblage and breakup, and rift magmatism during the Neoproterozoic. In order to demonstrate the occurrence of significant interaction in energy and matter     

High speed railway promoting development of low carbon economy in China

Low-carbon Economy is a kind of economic developing mode which takes low energy consumption,low pollution and low discharge as its foundation. It is another important revolution of the human society after the agriculture civilization and industry civilization. It deals with various fields including low-carbon energy,low-carbon agriculture,low-carbon industry,low-carbon transportation and low-carbon life,etc. Among those,low-carbon transportation is one of the important contents. Since high speed railway uses electricity as driving force,it runs without discharging waste gas,and it is a kind of clean and green transportation with little dust and smoke black. Therefore,the study of the relationship between the high speed railway and low-carbon economy is becoming one of the important frontier problems that confronting the theoretic circle. With demonstration analysis and comparative analysis,this paper discusses the comparative advantages of high speed railway in terms of energy saving and environment protection,treatment of sound pollution,land saving and reduction of external cost(mainly pollution treatment cost) ,etc. compared with the other transportation modes and ordinary railway. Taking Beijing-Tianjin Intercity Railway as an example,the paper further demonstrates the distinctive advantages in respect of energy conservation and emission reduction. Besides,the paper also predicates the low-carbon effects after several high speed railways is put into operation in a few years. It is concluded that the development of high speed railways will meet the need of low-carbon economy and is significant for sustainable and steady development of economy and society.     

A Reader-Response Criticism towards "Trifles"

Susan Glaspell's Trifles is considered one of the most important feminist works in last century. This play is about a murder mystery that explores gender relationships, power between the sexes, and the nature of truth. In this article we are going to examine and explain the relationship between the text and the reader in the process of reading with the view of reader-response criticism.     

Recent progress in computational thermal radiative transfer

The equation describing the transfer of radiant energy in semitransparent media is radiative transfer equation. In three-dimensional semitransparent media, radiative intensity is a function of 7 dimensions, which can only be solved through the numerical method in most circumstances. Numerical simulation has become an important way in the study and application of the theory of thermal radiative transfer in semitransparent media. This paper reviews the recent progress of Chinese scholars in the field of computational thermal radiative transfer, and proposes some important subjects in this field for future study.     

Analysis on Mood ＆ Modality in English Listening Comprehension

The metafunction propounded by Halliday is one of the most important parts of functional grammar.This paper is to analyzehow the interpersonal function, such as mood and modality,is embodied in the listening materials and illustrate it by corresponding examples,with the intention of using functional grammar to guide the teaching of English listening and improving the students’listening skills.     

A robust photocatalyst for ~1O_(2-)mediated oxidation of cyclopentadiene based on silica-supported platinum (II) terpyridyl complex

The oxo-functionalization of hydrocarbons is the most important type of reaction in organic chemical productions. Among various oxidizing reagents, more and more studies have focused on the employment of molecular oxygen as oxidizing species in order to realize innova     

Cultivating Pragmatic Competence in English Vocabulary Teaching

vocabulary is one of the most important elements of the language.It is closely related with context and pragmatic.This paper intends to find out some effective method of vocabulary teaching under the pragmatic principles,exploring how to improve pragmatic competence of students in English vocabulary teaching.     

Assessment of wind energy potential in China

China wind atlas was made by numerical simulation and the wind energy potential in China was calculated. The model system for wind energy resource assessment was set up based on Canadian Wind Energy Simulating Toolkit （WEST） and the simulating method was as follows. First, the weather classes were obtained depend on meteorological data of 30 years. Then, driven by the initial meteorological field produced by each weather class, the meso-scale model ran for the distribution of wind energy resources according each weather class condition one by one. Finally, averaging all the modeling output weighted by the occurrence frequency of each weather class, the annual mean distribution of wind energy resources was worked out. Compared the simulated wind energy potential with other results from several activities and studies for wind energy resource assessment, it is found that the simulated wind energy potential in mainland of China is 3 times that from the second and the third investigations for wind energy resources by CMA, and is similar to the wind energy potential obtained by NREL in Solar and Wind Energy Resource Assessment （SWERA） project. The simulated offshore wind energy potential of China seems smaller than the true value. According to the simulated results of CMA and considering lots of limited factors to wind energy development, the final conclusion can be obtained that the wind energy availability in China is 700 - 1 200 GW, in which 600 - 1 000 GW is in mainland and 100 - 200 GW is on offshore, and wind power will become the important part of energy composition in future.     

Introduction to The Information Security Research Institute

Wuhan university is a key university directly under the administration of the Education Ministry of China. Information security is one of the most important disciplines at Wuhan University. The information security research institute is a research organization at the university which specializes in the research and technology development on information security.     

The effect of surface-free energy and microstructure on the condensation mechanism of water vapor

Obtaining high-water-yield drinking water in arid areas without consuming energy is still a global challenge.Since water vapor is ubiquitous, atmospheric water harvesting technologies are undoubtedly one of the most promising candidates. A typical water condensation process is analyzed in this paper(nucleation, self-growth,coalescence and sliding). The mechanisms of interactions between adsorbate and water vapor are discussed.The effect of surface-free energy and microstructure on water vapor co...