Journal of Jishou University(Natural Sciences Edition)

Select

On Graham's Problem Concerning the Sum of the Aliquot Parts

LE Mao-Hua

journal6 2002, 23 (1): 1-3.

Abstract （1551）

PDF（pc）（1255KB）（1377）

Save

Let n be a positive integer satisfying n＞1 and s(n)=[n/2],where s(n) is the sum of the aliquot parts of n.Further let ε(n) denote the number of dirts of n.Further let ε(n) denote the number of distinct prime factors of n and p1，p2，…，pω(n) denote its prime factors with p1＜p2＜…＜pω(n).In this paper we prove that if 2｜n,then n=2;if n is odd and ω(n)≤2,then n is a power of 3;if n is odd and ω(n)≤3,then p1=3 or p1=5,p2=7 and 11≤p3≤31；if n is odd and ω(n)=4，then p1=3 or p1=5,7≤p2≤13,11≤p3≤17 and 13≤p4≤23.The above-mentioned results partly solve a problem posed by Graham.

Reference | Related Articles | Metrics | Comments（0）

Select

Wavelet Transform Based on Analytic Signal and Its Application

WU Jin-Pei, WU Wei-Wei

journal6 2002, 23 (1): 4-7.

Abstract （2112）

PDF（pc）（675KB）（1420）

Save

Wavelet transform based on analytic signal is proposed, with its properties discussed. By this method, the energy of the signal in a certain frequency subband, which may change with time, can be calculated out like Wigner distribution. The outcome of the transform can be visualized easily, overcoming the drawbacks of common wavelet transform. Three examples are given, which include its application on time-frequency analysis, denoising and fault diagnosis.

Reference | Related Articles | Metrics | Comments（0）

Select

XAFS and XRD Studies of Mechanically Alloyed Fe_100-xCu_x

YIN Shi-Long, ZHANG Jia-Wei, WEI Shi-Qiang

Journal of Jishou University(Natural Sciences Edition) 2002, 23 (1): 8-12.

Abstract （2328）

PDF（pc）（601KB）（1410）

Save

The structures of the mechanically alloyed Fe_100-xCu_x (x=0,20,30,40,60,70,100) after milling for 80 hours were investigated by X-ray absorption fine structure (XAFS) and X-ray diffraction (XRD).When the weight ratio of the balls to the powder was 40:1,for the Fe_100-xCu_x (x≥40) alloys,the XRD results show that diffraction peaks of α-Fe disapeared,and only the diffraction peaks with fcc-like structure were observed.The fcc-like lattice parameter increases with Fe concentration.On the contrary,for the Fe_100-xCu_x (x＜30) alloys,only the diffraction peaks with bcc-like structure were observed.The bcc-like lattice parameter decreases with Cu concentration.The XAFS results show that the local structure evolution of Fe atoms was different from that of Cu atoms.The local structures around Fe atoms had been greatly changed and its disorder evidently increased,but the Cu atoms maintain the original structure geometry.So,mechanically alloyed Fe_100-xCu_x is not a homogeneous supersaturated solid solution and consists of Fe-rich and Cu-rich regions.

Reference | Related Articles | Metrics | Comments（0）

Select

Some Ecological Characteristics of Burmoniscus Ocellatus

CHEN Guo-Xiao, CHEN Jun, LIAO Chong-Hui, LI Jian-Xiong

journal6 2002, 23 (1): 13-16.

Abstract （2246）

PDF（pc）（470KB）（1376）

Save

Based on data of the soil animals survey in many year, the ecological characters of B.ocellatus are analyzed and described in present paper.The distribution of population density is concerned with the shadow below the forest, moisture and the thickness of the defoliation.The dynamics of population is related to the rainfall.If the rainfall were too little or too much, its population would be reduced.Its decomposition of the deadwoods and defoliation has remarkable influence on the energy transformation of the forest ecosystems.

Reference | Related Articles | Metrics | Comments（0）

Select

Image Coding Scheme Based on Wavelet Transform

ZHU Gui-Hua

journal6 2002, 23 (1): 17-20.

Abstract （1825）

PDF（pc）（691KB）（1307）

Save

As a new type of multiresolution frequency transform theory, wavelet transform has been widely used in applied mathematics、physical and i
nform science. In image processing, especially in image compression, recently last ten years, investigations and applications of image compression with wavelet transforms are very active. By analyzing construction and vanishing moment properties of biorthogonal wavelets, we propose a very simple method by the solution of linear equations, so that a new wavelet construction method that contains parameters is presented. For various wavelet parameters, and based on properties, we discuss performance of quality and computation of restoration image by means of wavelets in this paper. When wavelet coefficients are simple integers, simulation experiment shows that the new method can retain both high compression performance and very good fast computational feature.

Reference | Related Articles | Metrics | Comments（0）

Select

Sufficiency for the Existence of Rm-EDGE CUT

OU Jian-Ping , ZHANG Fu-Ji

journal6 2002, 23 (1): 21-23.

Abstract （1912）

PDF（pc）（665KB）（1372）

Save

Rm-edge cut is such an edge cut that separates a connected graph into a disconnected one with no component having order less than m. Let G be a connected graph with order at least 2m. Write c(G) for the circumference of graph G, i.e., the length of the longest cycle in G. It is proved in this paper that graph G contains Rm-edge cuts if c(G) ≥m+1. The lower bound of c(G) is sharp to some extent.

Reference | Related Articles | Metrics | Comments（0）

Select

Global Existence of Solutions to Nonlinear HyperbolicEquations With Viscosity

LIU Fa-Gui

journal6 2002, 23 (1): 24-28.

Abstract （2184）

PDF（pc）（1564KB）（1357）

Save

For Cauchy problem of nonlinear hyperbolic equation with viscosity,the global existence of solutions is obtained by introducing the entropy-entropy flux in the sense of Lax, and by using of the mothod of compensated compactness, the convergence of L∞ bounded approximating solutions is proved.

Reference | Related Articles | Metrics | Comments（0）

Select

The Growth of Solutions of Some Non-Homogeneous Linear Differential Equations

WANG Jun

journal6 2002, 23 (1): 29-31.

Abstract （2466）

PDF（pc）（1193KB）（1185）

Save

Studying the growth of solutions of where is a non-constant polynomial,the following result is obtained:any solution of the above equation is of infinite order,and its hyper order is positive integer no greater than deg Q；thus improves some result given by Yang L Z.

Reference | Related Articles | Metrics | Comments（0）

Select

The Molecular Progress on the Study of Plant Self-Incompatibility

XU Guo-Hua, LI Chang-Qing, ZHANG Shao-Ling

journal6 2002, 23 (1): 32-37.

Abstract （2788）

PDF（pc）（576KB）（2168）

Save

There are two kinds of self-incompatibility (SI) in plant. One is sporophytic SI, the other is gametophytic SI. Here the latest progress in the area of genetic control and molecular mechanisms are elucidated.

Reference | Related Articles | Metrics | Comments（0）

Select

On the Sources of Cybernetics

XU Sheng-Jiang

journal6 2002, 23 (1): 38-43.

Abstract （1812）

PDF（pc）（624KB）（1655）

Save

In the science sources of cybernetics,automation is the basic propulsive force;its theoretical enlightenment mainly comes from biology;the technology is established in micro-current engineering;methodology of science guides people rightly.And at last,N.Wiener has accomplished the establishment of cybernetics by synthesizing the achievements of all aspects above.

Reference | Related Articles | Metrics | Comments（0）

Select

The Research on Damping Vibration Controlled in Electrorheological Fluids

ZHOU Xiao-Qing, WU Yun-Wen

journal6 2002, 23 (1): 44-47.

Abstract （2066）

PDF（pc）（1275KB）（1417）

Save

Based on the principle that viscosity changes as electric field intensity in electrorheological fluids,movement of damping vibration controlled is brought about in electric field of direct current in electrorheological fluids,and the law is investigated by using disturbance method.The quantitative relation of damping vibration and electric field of direct current is obtained.

Reference | Related Articles | Metrics | Comments（0）

Select

Study on the Jellification Properties of the Ficus Pumila (L.) Gum

YAN Wen-Bin, YAO Mao-Jun, PENG Qing-Jing

journal6 2002, 23 (1): 48-50.

Abstract （2156）

Save

The factors which affect the jellification of the ficus pumila (L.) Gum,such as pH,temprature and the influence of the Ca2+ are studied in this paper.It confirms the pH range ,the most suitable temperature to maintain the most proper colloidal state,and the influence of Ca2+ in different pH on the jellification of the ficus pumila (L.) Gum.

Reference | Related Articles | Metrics | Comments（0）

Select

The Investigation and Study on Resources of Medicinal Ferns in Wulingshan Region,China

CHEN Gong-Xi, CHEN Jiang-Gui, YI Shan-Xin, LIU Shi-Biao, LI Hu-Ming

journal6 2002, 23 (1): 51-54.

Abstract （2063）

PDF（pc）（169KB）（1488）

Save

Wulingshan region is located at 27°28′ to 30°05′N and 107°02′ to 111°35′E,from 189.4 m to 2 370 m above sea level and covers an area of Ca.100 000 km2.In this paper,some investigations and studies on resources of medicinal ferns in Wulingshan region have been reported.The result shows: (1) The flora is rich,there are 214 species belonging to 41 families and 80 genera of medicinal ferns in the region,the dominated taxa are Polypodiaceae,Dryopteridaceae,Athyriaceae,Pteridaceae,Selaginellaceae and Selaginella,Pteris,Asplenium,Polystichum,Lepisorus,Pyrrosia,Dryopterisl;(2) The geographic elements are complicated and East Asia element takes the largest proportion;(3) The plants are distributed unevenly ,most of species at the belt of lower-middling altitude (≤1 500 m);(4) There are six medicinal types,namely Antibacterial type,Anti-parasite type,Digestive system ailment medicine type,Respiratory system ailment medicine type,Urinary system ailment medicine type and External wound medicine type.Based on estimation of capacity of available resource,there are 79 species can be used directly,100 species can be used restrainedly and 35 species must be cons
erved grimly.In view of actual situation on medicinal fern natural resources of Wulingshan region,we think that we must exploit as quickly as possible on one side,and on the other side,we must launch scientific research on the resources.

Reference | Related Articles | Metrics | Comments（0）

Select

On Quasi-projective System

ZHAN Jian-Ming

journal6 2002, 23 (1): 55-56.

Abstract （2087）

PDF（pc）（703KB）（1209）

Save

Let S be a monoid,A is quasi-projective S -system if for every S -epimophism f:A→B and S-homomorphism g:A→B,there exists a S-homomorphism h:A→A such that fh=g.The properties of quasi-projective S -system are studied and two main results are obtained:(1) S is a(semi) perfect monoid if and only if for every (f.g.) right S-system have a quasi-projective cover S -system;(2) S is a right hereditary monoid if and only if every projective S -systemis quasi-projective.

Reference | Related Articles | Metrics | Comments（0）

Select

ASP and Its Application in Management Information System Based on Internet/Intranet

ZHONG Jia-Ming, TAN Li

journal6 2002, 23 (1): 57-60.

Abstract （1631）

PDF（pc）（608KB）（1628）

Save

Starting with analyzing the ASP'S working principles,its advantages and the design for its applied program,this paper,in accordance with Management Information System Based on web,discusses how to make use of ASP to solve the following issues: accession of Database,Distribution,the users' Identification Certificate.

Reference | Related Articles | Metrics | Comments（0）

Select

Experimental Studies on the Thermal Performance of All-Glass Evacuated Tubular Solar Water Heaters

SONG Ai-Guo

journal6 2002, 23 (1): 61-65.

Abstract （1845）

PDF（pc）（632KB）（1519）

Save

The thermal performance of all-glass evacuated tubular solar water heaters is analyzed by a large number of experimental data.Results show that mass area ratio (MAR) is a primary factor to average daily efficiency and instantaneous efficiency curve of tubular solar water heaters is not straight line.

Reference | Related Articles | Metrics | Comments（0）

Select

Parameter Estimation for Thermodynamic Model of Solution by Using of Genetic Algorithm

DONG Jun-Fang, ZENG Ying, LIN Jin-Qing

journal6 2002, 23 (1): 66-68.

Abstract （1989）

PDF（pc）（473KB）（1326）

Save

Genetic algorithm was used to estimate the parameters of thermodynamic model of solution,and a modified genetic algorithm was proposed by modifying the strategy of mutation and the mode of competition.DMF+water+1-propanol VLE system was taken as an example,and the results were compared with those of PWELL method.It is found that the optimization ability of genetic algorithm is much more powerful than that of POWELL method not only in binary composition system but also trinary composition system.

Reference | Related Articles | Metrics | Comments（0）

Select

The Adsorption of 2,4-binitro-phenol in Aqueous Solutions by Polyamide

XIE Zu-Fang, XIA Jin-Hong

journal6 2002, 23 (1): 69-73.

Abstract （2070）

PDF（pc）（602KB）（1374）

Save

The properties,optimal conditions and influencing factors for polyamide resin to adsorb 2,4-binitro-phenol from aqueous solutions have been investigated.The results show that polyamide has a better adsorption capability,and that the pH value is the main factor affecting adsorption;the initial rate of 2,4-binitro-phenol adsorption on polyamide is faster,and the middle rate is second-order with respect to its concentration.The adsorption process in solution exhibits Freundlich behavior and is mainly physical adsorption.The 2,4-binitro-phenol adsorbed on the resin can be eluted by 1% ammoniac solution quickly.

Reference | Related Articles | Metrics | Comments（0）

Select

Graft Copolymerization of Propyl Methacrylate Onto Sweet Patato Starch Initiated by Potassium Permangate-Acid

FU Wei-Chang, GU Ren-Yong, PENG Qing-Jing, HUANG Cheng

journal6 2002, 23 (1): 74-76.

Abstract （1732）

PDF（pc）（369KB）（1492）

Save

The graft copolymerization of propyl methacrylate onto sweet patato starch was carried out using patassium permangate-acid as initiator.The effect of various conditions on the graft polymerization was studied.The results show that when the concentration of the monomer is 1.0 mol/L,the concentration of the initiator is 1.5 mmol/L,the reaction temperature is 40～50 ℃,the reaction time is 1.5 h,high efficient grafting(EG%) can be achieved.

Reference | Related Articles | Metrics | Comments（0）

Select

Study on Treatment of Phosphor Wastewater With Chlorine Dioxide

PENG Qing-Jing, WANG Ji-Hui, ZHAO Xin, GAN Hai-Ming

journal6 2002, 23 (1): 77-79.

Abstract （1871）

PDF（pc）（295KB）（1619）

Save

Some factors inflnencing the effect of the treatment of phosphor wastewater with chlorine dioxide was studied.The experimental results showed that chlorine dioxide could oxidize phosphor and cyanide in wastewater.Under proper reaction condition,the oxidation yield of phosphor was 100%,and the oxidation yield of cyanide was over 90%.The first standard in GB 4283-84 could be attained after wastewater was treated with chlorine dioxide and lime.

Reference | Related Articles | Metrics | Comments（0）

Select

Analysis of Heterosis and Fertility of Combinations of Indica With Japonica and WCVs With Indica or Japonica

HU Yi-Hong, JIANG Xiao-Cheng, XIAO Hui-Hai, WANG Zhi

journal6 2002, 23 (1): 80-82.

Abstract （1716）

PDF（pc）（310KB）（1394）

Save

The F1 heterosis and fertility of combinations of LH422 or 02428 with Indica or Japonica and combinations of Indica with Japonica were inspected in this test.The results showed that F1 of M-201/Nihonmasari had a quite stronger heterosis on tillers per plant and grains weight per plant,F1 of WCVs with Indica or Japonica were of higher heterosis and of stronger fertility and would promote the rice output obviously, and LH422 had a stronger tendentiousness to Japonica,but 02428 has also a strong tendentiousness to Indica.

Reference | Related Articles | Metrics | Comments（0）

Select

Influence of Treadmill Training and Acute Exhaustive Exercise on Ca²⁺- ATPase Activity in Mitochondria of Different Types of Muscle in Rats

WEI Yuan, LUO Gui-Zhen, LIN Shi-Mei, XU Shi-De

journal6 2002, 23 (1): 83-85.

Abstract （2186）

PDF（pc）（425KB）（1655）

Save

Thirty Wistar male rats were randomly divided into 3 groups : quiet group (A) ;exhaustive exercise group (B) ;training and exhaustive exercise group (C).Ca²⁺-ATPase activity in mitochondria of different types of muscle were determined .The results showed : 1) Ca²⁺-ATPase activity in mitochondria of the white muscle was higher than that of the red muscle at rest ;2) After exhaustive exercise,Ca²⁺-ATPase activity in mitochondria of the white muscle decreased but that of the red muscle incrased;3) The change of Ca²⁺-ATPase activity in mitochondria of the white muscle was larger through five weeks training .The above data suggest that the progressively increase load training takes positive effect only for the white muscle.

Reference | Related Articles | Metrics | Comments（0）

Select

The Research of Matrix Decomposition by Plus and Multiplication Operation

CHEN Huan-Ran

journal6 2002, 23 (1): 86-88.

Abstract （1922）

PDF（pc）（1474KB）（1552）

Save

In this paper,it is studied that a matrix is represented into the forms of sum or product of some simple or special matrix.

Reference | Related Articles | Metrics | Comments（0）

Select

A New Method to Determine Hidden Note Number in Neural Network

ZHANG Qing-Liang, LI Xian-Ming

journal6 2002, 23 (1): 89-91.

Abstract （2154）

PDF（pc）（667KB）（2852）

Save

This paper puts forward a new method to determine hidden note number in neural network.This method is with little computational quantity and is convenient and valuable in application.

Reference | Related Articles | Metrics | Comments（0）

Select

Stably Finite Rings，Rings Satisfying the Rank Condition,and Grothendieck Group

LI Xian-Ming, LI Qi-Sheng

journal6 2002, 23 (1): 92-93.

Abstract （1804）

PDF（pc）（921KB）（1392）

Save

In this paper,some new characterizations for stably finite rings or rings satisfying rank condition are given by using its Grothendieck group,then some well known conclusions are proved by using new method.

Reference | Related Articles | Metrics | Comments（0）

Select

Accounting Treatment to Liability Security for Other Enterprises

LIU Gu-Jin

journal6 2002, 23 (1): 94-96.

Abstract （1956）

PDF（pc）（694KB）（1667）

Save

According to the conservatism of conducting accounting treatment,it is suggested in this paper that the contingent assets be defined separately if the debtor can clear his debts;otherwise,the contingent assets should not be defined,but should be reported in the notes of balance sheet.It is also suggested to establish subject of “ contingent asset",accounting the mortgage security assets and the hypothecate security assets on the date of balance sheet,which will be converted into money,sold off at reduced prices,or sold off by the debtor ,for he is unable to clear his debts.The content of the subject will be listed alone in the balance sheet so as to be distinguished from other asset items.By this way,accounting treatment to contingent liabilities formed by all kinds of security pattern can be conducted.

Reference | Related Articles | Metrics | Comments（0）

Select

On the Euler's Factor and Its Order of Odd Perfect Numbers

LE Mao-Hua

journal6 2002, 23 (2): 1-2.

Abstract （1952）

PDF（pc）（737KB）（1671）

Save

Let n be an odd perfect number,and let π,α denote the Euler's factor and its order of n respectively.In this paper we prove that if every non-Euler q of n satisfies q≡3(mod 4),then π≡α(mod 8).

Reference | Related Articles | Metrics | Comments（0）

Select

Computation of Bistatic RCS of Cylinders Filled WithLarge Loss Dielectric by Moment Method

DONG Wen-Feng, FU Wen-Bin, LIU Jian-Hao, ZHOU Jian

journal6 2002, 23 (2): 3-6.

Abstract （1906）

PDF（pc）（894KB）（1704）

Save

Numerical computation of bistatic RCS is carried out by moment method for some infinite long cylinders filled with large loss dielectric (LLD) used in radar anti-stealthy technology and design of microwave dark rooms, in case of TM incident of wave. The simulation shows that the scattering is weak for materials with large permittivity and low loss. The electromagnetic parameters of filled dielectric have obvious effect on the scattering of the cylinders when ka0 is small, however, the effect becomes weaker with the increase of the angle between the cylinder to the two stations. When ka0 is large, the influence of electromagnetic parameters of the filled dielectric to RCS is weak, while the scattering energy gradually concentrates to the backward direction.

Reference | Related Articles | Metrics | Comments（0）

Select

Design of a Multi-Media Whiteboard System on Internet

LI Li-Ming, CAI Li-Jun, HU Jin, SHI Rong-Hua, LI Fang-Jun

journal6 2002, 23 (2): 7-11.

Abstract （2409）

PDF（pc）（570KB）（1563）

Save

According to the application of the whiteboard in CSCW，a multi-media share whiteboard system on Internet is designed，which，aiming at the safety strategy required by the whiteboard，provides relevant safety service and presents approaches to realization of system information and object.

Reference | Related Articles | Metrics | Comments（0）

Select

Allergy of Huwen Analgesic Peptide (HWAP-1)

LIANG Hai-Ying, ZHANG Xiao-Yuan, LIANG Song-Ping

journal6 2002, 23 (2): 12-14.

Abstract （2351）

PDF（pc）（397KB）（1324）

Save

HWAP-1 was studied on allergy by whole body allergic test and skin part allergic test.The results showed that HWAP-1 did not cause whole body allergic and skin part allergic.

Reference | Related Articles | Metrics | Comments（0）

Select

Disposal of Chromium (VI) in Waste Water by Titania Compound Adsorbent

LU Xiu-Guo, LIANG Shu-Xuan, YU Bo-Qu

journal6 2002, 23 (2): 15-18.

Abstract （2046）

PDF（pc）（452KB）（1424）

Save

The experimental study using a titania compound adsorbent to dispose the chromium in waste water is compared with using the active carbon. The result shows,if the content of the chromium in waster water is 80 mg/L and the adsorbent is titania, the removal rate of chromium will reach 99.5%, which is obviously higher than using active carbon adsorbent; what's more, the desorption rate of chromium can reach 99.6%, and the adsorbent can be used again after regeneration.

Reference | Related Articles | Metrics | Comments（0）

Select

The Observation of to Normal Distribution of Population

CHEN Bi-Hong

journal6 2002, 23 (2): 19-23.

Abstract （1734）

PDF（pc）（844KB）（1343）

Save

The simplest model in statistics,the observation of normal distribution of population is analysed in this paper，by using the theory of observation process.Though the problem has been solved，some new conclusions are given in this paper.According to the viewpoint of observation process，it is important not to concern with estimating value，but with the knowledge distribution about observed object，or posterior probability distribution，which is used to make decision.But in the process of making decision，there may be some process equivalent to estimation.This point is used to do analysis，and thus some conclusion which is not found before is drawn to give a foundation to further analysis.

Reference | Related Articles | Metrics | Comments（0）

Select

Application of Virtual Reality in Micro-Accelerometer Design

XIE Shao-Rong, LUO Jun, ZHAO Xin, LU Gui-Zhang

journal6 2002, 23 (2): 24-27.

Abstract （2033）

PDF（pc）（184KB）（1353）

Save

The design method with virtual reality is specially propitious to develop micro-structure parts, similarly micro_accerlerometer. In this paper, the corresponding implementation steps of designing virtual micro-accelerometer are given. The virtual environment based on micro computer is established. The micro-accelerometer working in the virtual environment shows that the idea of design method for micro-accelerometer with virtual reality is feasible and the implementation steps are correct.

Reference | Related Articles | Metrics | Comments（0）

Select

On the Anti-Symmetric Solution of Linear Matrix Equations

JIANG Li-Qun, MO Hong-Min, LIU Luo-Fei

journal6 2002, 23 (2): 28-30.

Abstract （2208）

PDF（pc）（724KB）（1390）

Save

The anti-symmetric solutions of linear equations AX=C and AXB=C are considered.The necessary and sufficient conditions for the consistency of the equations with an anti-symmetric condition on solutions are derived using the full-rank decomposition,generalized inverse and generalized singular-value decomposition.

Reference | Related Articles | Metrics | Comments（0）

Select

High Sensitive SO₂^-4 Ion-Selective Electrode

DUAN You-Gou

journal6 2002, 23 (2): 31-33.

Abstract （1971）

PDF（pc）（482KB）（1718）

Save

A PVC membrance SO₂^-4ion-electrode made up of a electroactive substance and plasticiser,was reported in this paper.The electroative substance was composed of 2-Aminperimidine and SO₂^-4.The plasticiser was made up of DBP.The experiment made clear that the ion-electrode had good selectivity and high sensitivity about SO₂^-4.The electrode gave a linear response range from 5.0×10^-7 mol·L^-1 to 1.0×10^-1mol·L^-1.This electrode has been used for determining SO₂^-4 in water.The result was satifactory.

Reference | Related Articles | Metrics | Comments（0）

Select

Treatment of the Electrolytic Mangan Wastewater byIron Chipping Microelectrolysis

OuYang-Yu-Zhu , SHEN Yang, LI Qing-Ping, LI Jian-Hua, XU Jing-Ming

journal6 2002, 23 (2): 34-37.

Abstract （2006）

PDF（pc）（147KB）（1749）

Save

The electrolytic mangan wastewater was processed by iron chipping.The factors of iron chipping amount, reaction time and the influence of wastewater pH on the purgation ratio of Cr⁶⁺,Mn²⁺ were investigated. The results show that under usual temperature when amount of iron chipping is 15%, wastewater pH is 4.00, reaction time is 120 min, Cr⁶⁺,Mn²⁺ and total chromium purgation ratio were 99.7% and 99.2%.when it was used to practice the treatment electrolytic mangan wastewater, purgation ratio of Cr⁶⁺,Mn²⁺ was 99.45% and 95.53%.

Reference | Related Articles | Metrics | Comments（0）

Select

The GC/MS Testing of Essential Oil and the Valeriana in Xiang-e-yu-qian Areas

GU Li

journal6 2002, 23 (2): 38-42.

Abstract （1902）

PDF（pc）（692KB）（1513）

Save

GC/MS has been used to test the chemical components of essential oil of the perfume plants of Valeriana such as Valeriana pseudofficinais C.Y.Cheng et H.B.Cheng,V.faurieri Briq and V.steeenoptena in the areas of Xiang-e-yu-qian.The conclusion has been drawn that the essential oil of perfume plants is of high content of main chemical components and of effective components. The three kinds of Valeriana plants are excellent ones.

Reference | Related Articles | Metrics | Comments（0）

Select

On Cultural Choice for the Development of Traditional Ethnic Sports

LONG Pei-Lin

journal6 2002, 23 (2): 43-45.

Abstract （1950）

PDF（pc）（272KB）（1713）

Save

As a kind of traditional ethnic sport among different nationalities in Hunan-Hubei-Chongqing-Guizhou border region,long-feet-horse(something like stilts) has become a part of P.E. teaching and national sports competition. After analysing its modernized transformation,the difference between tradional ethnic sports and modern sports has been discovered.This thesis provides theoretical refference for modernizing development of traditional ethnic sports under new social condition and new cultural choice.

Reference | Related Articles | Metrics | Comments（0）

Select

Integral Operator Solving Process of Abstract Kinetic Equation With a Parameter and Reflecting Boundary Condition

YU De-Jian, LIU Xiao-Ping

Journal of Jishou University(Natural Sciences Edition) 2002, 23 (2): 46-51.

Abstract （1883）

PDF（pc）（2144KB）（1180）

Save

Some kind of abstract Volterra linear integral operators is studied in order to solve the boundary value problems of abstract kinetic equation. The solving process is named as integral operator solving process, thus it is fended provide a new, simple and immediate solving process of the boundary value problems of abstract kinetic equations. In the paper we solve the boundary value problems of abstract kinetic equation with a parameter and reflecting boundary condition by the integral operator solving process.

Reference | Related Articles | Metrics | Comments（0）

Select

On the First Power Mean of Dirichlet L-FunctionsWith the Weight of Kloostermann Sums

GAO Li

journal6 2002, 23 (2): 52-55.

Abstract （2113）

PDF（pc）（1832KB）（1201）

Save

By using estimation of the classical kloostermann sum,estimation of the trigonomitric sum and the analytic method to study the first power mean of Dirichlet L-functions with the weight of general Kloostermann sum,a sharp asymptotic formula is given:∑x≠x0｜S(m,n,x,q)｜2｜L(1,x)｜=φ2(q)∑′∞n=1(r2(n))/(n2)+O(q3/2+ε).

Reference | Related Articles | Metrics | Comments（0）

Volumn Content