Table of Content

15 June 2018, Volume 3 Issue 6

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On Meromorphic Solutions to Fermat Type Functional Equations

Duan Jiangmei

2018, 3(6):  1-5. 

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In this paper, we investigated if there exist meromorphic solutions to the functional equation f 7(z)+ g7(z)+ h7(z)= 1 and
obtained some results.

Insect Intelligent Identification and Real-time Monitoring System in Erhai Wetland

Luo Guilan1, Yang Zizhong2, Zhang Mei1, Wu Shilong1, Zhang Qian1, An Dong1

2018, 3(6):  6-12. 

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In order to identify and monitor the hidden insects in the Erhai wetland, this paper, with the help of the Internet designed
an intelligent insect recognition and real- time monitoring system based on the multifeature insect recognition algorithm. The
information of insect characteristics was collected by infrared radiation sensors, ultrasonic sensors, sound sensors, color sensors and
image sensors. Under the control of the single chip computer, the characteristic data was transmitted to the cloud server through the
network. Then the intelligent recognition was realized by analyzing the characteristics such as life, sound and color. Performance tests
show that: compared with image edge detection and correlation feedback method, it has some advantages in time and space complexity,
and the method is feasible.

Research on Pedestrian Detection Method Based on Improved DPM Model

Zhang Yaxu, Long Hui,Yun Lijun

2018, 3(6):  13-18. 

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In order to improve the accuracy of pedestrian detection in complex environment, the paper proposed a pedestrian detection
method based on improved DPM model. When the feature is extracted, to reduce the dimension of the normalized feature, the reduced
dimension method is used instead of the principal component analysis, and the gradient direction of the image unit is discretized into 9
intervals. The pedestrian is divided into several modules based on body parts, and the features of pedestrian and each modules are
extracted. Then, the root model and module model are obtained by classifier training for pedestrians and modules respectively. Finally,
the Cascade method is used instead of the traditional dynamic programming method for pedestrian detection. The results show that
with the method of simulation in Matlab environment, the recognition rate is significantly improved compared with the traditional
detection method based on HOG feature, and compared with the original DPM method, it improves the detection speed to a certain
extent without reducing the recognition rate.

A Research on C Program Design of CDIO Education Model in Science and Engineering

Zhang Xiaoling, Zhao Yuqin, Su Peng, Yang Jian

2018, 3(6):  19-23. 

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C programming design is an important basic course to cultivate computer application ability of science and engineering
students. Combined with the concept of CDIO education model, the paper analyzed the current situation of the curriculum reform from
the aspects of syllabus, teaching plan, teaching model and assessment mechanism. It is suggested that the CDIO education model can
effectively improve the training effect on the students of the science and engineering in application-oriented undergraduate colleges.

An Analysis and Research on the Senior High School Entrance Examination Mathematics Test Papers of
the Last Five Years in Eight Prefectural Cities of Yunnan Province

Fan Yiqing, Li Yapeng, Zhang Chaoyuan

2018, 3(6):  24-30. 

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Based on the 2015 edition of Junior Middle School Students' Academic Proficiency Examination Program in Yunnan
Province（trial implementation）, the changes and adjustment of mathematics test papers in the senior high school entrance examination
are compared and analyzed from 2013 to 2017 in eight prefectural cities of Yunnan province including Dali, Chuxiong, Wenshan,
Baoshan, Lijiang, Nujiang, Diqing, Lincang. In order to put forward helpful suggestions for students to prepare in the senior high school
entrance examination, the structure, content and proposition principles of mathematics test papers are studied.

A Preliminary Statistical Analysis of the Astronomical Meteorological Conditions in Mountainous Areas
in the East Coast of Erhai Lake in Dali: the Characteristics of the Atmospheric Season from 2016 to 2017

Wang Jingxing1, Liu Yu1, Song Tengfei1, Li Zhongmu2, Zhang Xuefei1, Li Xiaobo1

2018, 3(6):  30-33. 

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In August 2016, a meteorological station was established in Dacheng village, on the east bank of Dali Erhai lake, in order
to find the excellent astronomical observatory site in Dali. Up to September 2017, meteorological data more than one year has been
accumulated, and the wind speed, wind direction, temperature and humidity in meteorology can be preliminarily analyzed. It is
concluded that this site has distinct dry season and rainy season characteristics. Among them, the period from July to September is the
rainy season and the average humidity in each period（dawn，dusk，day，night）is over 75%. In February, the drought was the most
severe. The humidity in the day is within 70% from November to April. The humidity curve showed a significant decrease in June,
indicating that the moisture content of the period had obvious local climate anomalies. Due to the small annual average wind speed and
wind direction stability, significant seasonal periodicity and little light pollution at night, etc, a preliminary determination can be made
that the site is suitable for both teaching and scientific research for astronomical observation.

Comparative Study of Data Processing Methods for Dispersion Experiment

Xu Jianguo，Cai Jianchun，Ji Xin

2018, 3(6):  34-36. 

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In order to fit the dispersion curve with the measured data, the coefficients are determined by the least square solutions to
the overdetermined equations of Cauchy's formula, these coefficients are compared with the nonlinear least square fitting measured
data in Origin Software. The results show that both are maintaining consistency in the experimental errors.

Application and Practice of Engineering Problem Design in Teaching Reform of Power Electronics
Technology Curriculum

Sun Xiugui, Zhang Hongbin, Peng Jianrong, Sun Jiangbo

2018, 3(6):  37-41. 

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Power electronics technology is a modern technology to transform and control power, which is an important foundation and
approach for smart grid building. It is an urgent problem to solve how to cultivate talents suitable for electrical engineering, especially
for the current grid building within limited course time. By using the method of engineering design in the teaching of power electronics
technology, the scores of the students were obviously improved. Simultaneously, by applying Bloom education target classification on
the effect evaluation of both theoretical and experimental teaching reforms, the results were satisfactory. Through the application of
engineering design, good teaching effects have been achieved both in cultivating students' interest and practical ability and in
cultivating students' innovative thinking and broadening the horizons of their knowledge and so on.

An Investigation of Non-aqueous Phase Chemical Vapor Generation-Atomic Fluorescence Spectrometry
Technology

Wen Xiaodong, Lei Zirong, Chen Luqiong, Hu Kan

2018, 3(6):  42-47. 

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Objective: The paper is to innovatively investitgate the application of non-aqueous phase chemical vapor generation
（CVG）in atomic fluorescence spectrometry（AFS）. Methods: The types of elements and non-aqueous media suitable for the system
were studied, and the experimental conditions were optimized, and the analytical performance index system was established. Results:
Seven elements including mercury（Hg）, arsenic（As）, antimony（Sb）, bismuth（Bi）, cadmium（Cd）, stannum（Sn）and tellurium
（Te）had been successfully determined in non-aqueous phase CVG-AFS system after transferring from solution to non-aqueous phase
medium via different extraction methods, with good analytical performance for large part of the elements. Conclusion: Non-aqueous
phase CVG-AFS technology has good feasibility and analytical performance. This work provides a good basis for the later application
of non-aqueous phase CVG technology in other instrumental analysis methods.

A Study on the Influence of FeOx Doping into CeO2 Nanocrystal on Selective Oxidative Chlorination
of Methane

He Jieli, Yan Ya, Yang Rong, Li Jingwei*

2018, 3(6):  48-54. 

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Objective: The paper is to study the influence of FeOx doping into CeO2 nanocrystal on the crystal structure, morphology
and the catalytic performance on oxidative chlorination of methane. Methods: Crystal structure of materials was detected by XRD, and
the morphology was observed by TEM and HRTEM. Catalytic performance on the oxidative chlorination of methane over CeO2 and
FeOx - CeO2 nanorods at different reaction temperatures was investigated, and the apparent activation energy was also calculated.
Results: The unit cell of CeO2 nanocatalysts contracted slightly after doping with FeOx. The morphology of FeOx-CeO2 nanorods had a
trend of changing into cube after reaction. However, for FeOx-CeO2 nanocubes, the morphology and size were almost unchanged. For
CeO2 nanorods, the apparent activation energy was dropped from 106 kJ/mol to 84 kJ/mol after doping with FeOx. Conclusion: CeO2
and FeOx probably formed solid solution. The catalytic performance on the oxidative chlorination of methane was improved for CeO2
nanocatslysts after doping with FeOx.

Effect of K+ on the Visible Light Photocatalytic Activity of AgInS2

Liu Zhangyou, Dong Xingxing, Yan Ya*

2018, 3(6):  55-60. 

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Objective: The paper is to explore the effect of K+ on the visible light photocatalytic activity of AgInS2. Methods:
K-AgInS2 with different molar ratios of K+ to In3+ was prepared by using the low temperature liquid phase method. XRD, XPS, SEM,
UV-Vis DRS, and PL were used to characterize the products. Rhodamine B（RhB）was selected as the model contaminant, 1 000 W
halogen lamp was used as the light source（λ>420 nm）, the effects of different ratios of K+ on the photocatalytic activities of AgInS2
were explored. Results: Visible light photocatalytic activity of AgInS2 was enhanced when appropriate amount of K+ was introduced
into AgInS2. The optimum ratio of K+ to In3+ was 12:5, K-AgInS2 with the optimal ratio showed the highest visible light photocatalytic
activity. Conclusion: The effects of K+ on the visible light photocatalytic activity of AgInS2 were non-linear, and the visible light
photocatalytic activity of AgInS2 increased and then decreased with the introduction of K+.

A Comparison on the Content Determination of Total Amino Acids, Flavonoids and Saponins in
Trichosanthis Fructus and Its Steamed Products

Zou Chuncai, Zong Qianni, Zhang Wenzhi, Yan Haiyan*

2018, 3(6):  61-64. 

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Objective: The paper is to investigate the changes of the contents of total amino acids, flavonoids and saponins before and
after steaming in Trichosanthis Fructus. Methods: Respectively with L- arginine, quercetin and oleanolic acid as the reference
substance, UV-VIS spectrophotometry was used to determine the contents in 568, 445, 551 nm wavelength of total amino acids,
flavonoids and saponins in Trichosanthis Fructus and its steamed products. Results: Contents of total Amino Acid, Flavonoids and
total saponin in Trichosanthis Fructus and its steamed products were 1.190%, 0.980%, 0.013%, 0.010%，24.260%, and 25.850%.
There existed significant difference in Trichosanthis Fructus（P＜0.01 or P＜0.05）. Conclusion: The contents of total amino acids,
flavonoids and saponins in Trichosanthis Fructus has changed obviously after steaming.

A Comparative Study on Reducing Sugar and Total Sugar in Trichosanthis Fructus and Its Steamed
Products

Yan Haiyan, Zong Qianni, Zou Chuncai , Zhang Na

2018, 3(6):  65-68. 

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Objective: The paper is to determine the contents of reducing sugar and total sugar in Trichosanthis Fructus and its
steamed products by UV-VIS spectrophotometry, and to study the content changes of reducing sugar and total sugar in Trichosanthis
Fructus and its steamed products. Mehtods: With D-glucose anhydrous as standard, the reducing sugar contents in Trichosanthis
Fructus and its steamed products was determined by using 3,5- two nitro salicylic acid（DNS）colorimetric method at the wavelength
of 540 nm, the total sugar contents in Trichosanthis Fructus and its steamed products was determined by using Phenol sulfuric acid
color method at the wavelength of 487 nm. Results: When the reducing sugar was determined, the D-glucose anhydrous had a good
linear relationship with the absorbance in the range of 0.04-0.20 mg（r=0.999 1）, the average recovery was 99.8%, RSD was 0.78％.
When the total sugar was measured, the D-glucose anhydrous had a good linear relationship with the absorbance in the range of 0.005-
0.080 mg（r=0.999 5）; the average recovery was 98.3% , RSD was 1.98% . The contents of reducing sugar and total sugar in
Trichosanthis Fructus before and after steaming were 5.54%, 8.07%, 6.71% and 11.51% respectively. Compared with before steaming,
the content of reducing sugar and total sugar increased, and the difference had statistic significance（P＜0.01）. Conclusion: The
contents of reducing sugar and total sugar in Trichosanthis Fructus increased after steaming.

Experimental Study on the Effect of Fluoride Toothpaste on Remineralization
of Artificial Root Caries in vitro

Cui Xia , Tao Yongfu, Chen Hongfan, Mao Jinhui, Lan Hai*

2018, 3(6):  69-72. 

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Objective：The paper is to study the remineralized effects on root caries of different kinds of fluoride toothpaste and
fluoride- free toothpaste contained NaF concentration10, 20 and 40 mg/L. Methods：The tissue block of artificial body root was
prepared from bovine incisor, "open window" and put them in 37 ℃ demineralization solution for 96 hours to form artificial root caries.
Six samples were randomly divided into each group. The demineralized samples were pH-cycled through for 8 days with 6 cycles per
day. The samples were evaluated by using polarized light microscope（PLM）. Results：Fluoride toothpaste group showed varying
degrees of mineral deposition, and the deposition band width order was as follow: Darlie＞Cnice＞Colgate. The deposition band width
order of fluoride-free toothpaste with NaF was as follow: 40 mg/L＞20 mg/L＞10 mg/L. Conclusion：The remineralization effect of
Darlie in fluoride toothpaste was the best, and the remineralization of fluoride-free toothpaste with 40 mg/L NaF was the best.

A Study on the Effects of the Active Compounds of Geranium strictipes on the Growth and Acid
Production of Cariogenic Bacteria in Vivo

Wang Limei1, Yang Xiaozhen2, Lan Hai2*

2018, 3(6):  73-75. 

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Objective：To investigate the effects of four active compounds of Geranium strictipes on the growth and acid production of
two kinds of cariogenic bacteria. Methods：Firstly, respectively determine the minimum inhibitory concentration (MIC) and the
minimum bactericidal concentration (MBC) of the active compounds of Geranium strictipes on two kinds of cariogenic bacteria. Then the
influence of active compounds of Geranium strictipes on the growth and acid production of two kinds of cariogenic bacteria were
determined. Results：The MIC of gallic acid, gallicin, catechins, ellagic acid on Streptococcus mutans respectively were 4.000, 4.000,
1.000, 1.000 g/L , while the MBC of gallic acid, gallicin, catechins, ellagic acid on Streptococcus mutans respectively were 8.000, 8.000,
2.000, 2.000 g/L ; The MIC of gallic acid, gallicin, catechins, ellagic acid on Actinomyces viscosus respectively were 4.000, 2.000,
0.500, 0.500 g/L , while the MBC of gallic acid, gallicin, catechins, ellagic acid on Actinomyces viscosus respectively were 8.000, 4.000,
1.000, 1.000 g/L. The active compounds of Geranium strictipes could inhibit the acid production of two kinds of cariogenic bacteria.
Conclusion：4 active compounds of Geranium strictipes can affect the growth and metabolism of two kinds of cariogenic bacteria，and
effectively inhibit the acid production.

Determination and Applied Research of Ruthenium in Ruthenium（Ⅲ）-Sodium Tungstate-Methyl
Violet-PVA Associating System

Yu Jiang1，2，Zhao Xia2*

2018, 3(6):  76-78. 

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The ion- associated complex formed by ruthenium, sodium tungstate and methyl violet in the presence of surfactant
polyvinyl alcohol has a maximum absorbance at 580 nm. A sensitive method for determination of Ru（Ⅲ）was developed based on this
reaction. The apparent molar absorption coefficient ε was 1.966×108 L·mol-1·cm-1,with a linear range was 2.0~4.5 ng/25 mL. Other
ions in samples did not interfere the determination of ruthenium（Ⅲ）, and this method had excellent selectivity. The method has been
applied to the determination of trace ruthenium in metallurgical samples, and the results are satisfactory.

Ecological Characteristics of Actinomycetes Community in Walnut Rhizosphere at
Different Succession Stages

Wang Chuanqi1,2, Xiao Wen2, Yan Lihong3, Ma Rui1,2, Yang Xiaoyan3*

2018, 3(6):  79-83. 

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In order to uncover the community structure of rhizosphere actinomycetes and its ecological functioning characteristics at
different tree age, the spatial displacement was applied to study the community structure of rhizosphere actinomycetes at walnuts of
different tree ages in Yangbi county, Yunnan province. Furthermore, the bacteriostatic activity of rhizosphere actinomycetes community
against the Staphylococcus aureus, Escherichia coli and Penicillium were also tested. The results showed that accompanied by the tree
age increased, both of the detection rate and species richness of rhizosphere actinomycetes strains declined. The number of active
strains showed an upward trend, but there was no significant difference in its bacteriostasis activity. Generally, the succession of
actinomycetes community structure in rhizosphere would go along with the growth of walnut tree. An ecological functioning shift caused
by the different types of antimicrobial activity substances produced by actinomycetes, this would provide the potential resources for
novel antibiotics.

The Impact of Nest Trees Pruning on the Egrets Breeding Activity

Shen Jianxin, Li Ruxue, Xu Fang, Zhang Shuxia*

2018, 3(6):  84-89. 

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Human disturbance on wildlife is frequently mentioned as one of the principal issues of concern in biodiversity
conservation, and it is extremely important to identify accurately what human activities adversely impact the wildlife. Nest trees
pruning destroyed the egret breeding sites, and it is unknown how the egrets responded to the destroyed nest trees. A follow-up survey
was taken to compare the community composition, duration time of breeding activity, and nest space segregation between old and new
colony sites in Dali, Yunnan, China. It was found out that a sole black-crown night heron Nycticorax nycticorax population newly
occurred; the duration time of breeding activity was prolonged. For the mixed- species colony, the nest niche breadth figures in
horizontal, vertical direction and the distance to trunk of black-crown night heron increased, while which of the latest arrived cattle
egret Bubulcus ibis decreased. The results showed the egrets in new colony site faced bigger breeding pressure, which made the
breeding efficiency decreased. It was suggested that the pruning to the egrets nesting trees should be done cautiously and avoid drastic
pruning.

A Study on the Daytime Wintering Behavior of the Common Coot（Fulica atra）at Erhai Lake

Xu Fang, Liu Taixiang, Shi Xianghuan, Zhang Shuxia*

2018, 3(6):  90-94. 

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A transient scanning method was used to observe the time distribution and activity rhythm of wintering behavior of the
Common Coot（Fulica atra）in 2016 at Erhai Lake, Yunnan. The data of 177 times scanning showed that the most important behavior
in winter for Common Coot was feeding, which accounted for（63±19）% of daylight hours. The second important behavior was resting,
which accounted for（14±17）% of daylight hours. Swimming accounted for（11±11）%，preening accounted for（9±9）%，alerting and
others type of behavior accounted for very few of daylight hours. Surface feeding was the main foraging strategy for the Common Coot in
Erhai Lake, accounting for（79±11）% of time spent feeding during daylight hours. The Common Coot in Erhai Lake exhibited two
resting peaks in daytime activity, namely at noon and dusk.

A Research on Sharing Mode of Campus Stadium Driven by Sharing Economic Model

Sun Huafei

2018, 3(6):  95-100. 

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The new mode of sharing economy revitalized many Chinese traditional industries. To solve the problems like the lack of
masses fitness land resources, the low utilization rate of campus stadium, the paper is to do a comprehensive investigation on the
utilization of campus stadiums in China. The research starts from the five elements of the economic mode in new period: the users,
trust, network, data and the value. On the existing issues, it puts forward some suggustions: the opening of campus venues should be
people-oriented and be scientifically guided by the big data; the win-win pattern driven by value should be established. The purpose
of this study is to promote the formation of the scientific sharing model of the campus stadiums and Gymnasiums in China, and to put
forward constructive suggestions for the health of the national fitness activities in China.