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A Comparative study on generalized Manev potential and Newtonian potential in perturbed restricted four-body problem

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Applied Mathematics(A Journal of Chinese Universities) 2023年第1期38卷 44-57页

作者： Jagadish Singh Omale solomon Okpanachi Department of Mathematics Faculty of Physical SciencesAhmadu Bello UniversityZariaNigeria Department of Engineering and Space Systems National Space Research and Development Agency(NASRDA)Obasanjo Space CentreAbujaNigeria

The motion of a test particle within the context of the restricted four-body problem(R4BP)driven by a new kind of potential,called the generalized Manev potential,with perturbations in the Coriolis and centrifugal forces is considered in this *** system possesses eight libration points which were distributed on its plane of motion in different manner from those of the usual Newtonian *** the case of the perturbed R4BP under Newtonian potential,where two of these librations are stable,all of them are unstable in linear sense under Manev *** found that a gradual perturbation in the centrifugal force causes the trajectories of motion to drift inward but the Coriolis force was proven to have no effect on the location of the libration points of the *** first order Lyapunov characteristic exponents,the dynamical behavior of the system is found *** experimented with a high velocity stellar system(82 ***)to establish the applicability of the model in astrophysics.

关键词： generalized Manev potential Coriolis force centrifugal force stability chaotic 82 G.Eridani

Cytomorphological Analysis of Keratinocytes in Oral Smears from Tobacco Users and Oral Squamous Cell Carcinoma Lesions—A Histochemical Approach

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International Journal of Oral Science 2010年第1期2卷 45-52页

作者： Suneet Khandelwal Monica Charlotte solomon Jaipur Dental College Jaipur Highway Department of Oral Pathology Manipal College of Dental SciencesManipal University

Aim To analyse the cytomorphological features of kerati- nocytes in smears obtained from the oral mucosa of tobacco users and from oral squamous cell carcinoma lesions. Methodology Oral smears were obtained from clinically, normal appearing mucosa of oral squamous cell carcinoma patients （n=20） and from the mucosa of smokers （n=20）, and apparently healthy individuals （n=20） were used as controls. The smears were histochemically stained and cytomorphological assessment of the keratinocytes was carried out. One-way ANOVA （Analysis of Variance） was used for comparing the parameters among multiple groups and Tukey-HSD test was used to compare the mean values between groups. Results The mean nuclear area of keratinocytes from the mucosa of tobacco users was 46 ± 2.57 and that of the oral squamous cell carcinoma lesion was 81.54±4.31. While there was a significant （P=0.001） reduction in the cellular area of keratinocytes from oral squamous cell carcinoma lesion when compared with those from oral smears of tobacco users. Conclusion Cytomorphometric analysis of keratinocytes can serve as a useful adjunct in the early diagnosis of oral squamous cell carcinomas.

关键词： exfoliative cytology cytomorphometry Feulgen stain tobacco users oral cancer

Potential hybrid feedstock for biodiesel production in the tropics

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Frontiers in Energy 2016年第3期10卷 329-336页

作者： solomon GIWA Oludaisi ADEKOMAYA Collins NWAOKOCHA Department of Agricultural and Mechanical Engineering College of Engineering and Environmental Studies Olabisi Onabanjo UniversityIbogun Campus Ifo 234039 Nigeria

Recently, mixture of different oils at various proportions have been used as feedstock for biodiesel production. The primary aim is to improve fuel properties which are strongly influenced by the fatty acid composition of the individual oil that makes up the feedstock mix. The tropics are renowned for abundant oil-bearing crops of which palm kernel oil （PKO） from palm seed and groundnut oil （GNO） are prominent. This present paper investigated biodiesel production from hybrid oil （HO） of PKO （medium carbon chain and highly saturated oil） and GNO （long carbon chain and highly unsaturated oil） at 50/ 50 （v/v） blending. The principal fatty acids （FAs） in the HO are oleic （35.62%） and lauric acids （24.23%） with 47.80% of saturated FA and 52.26% of unsaturated FA contents. The chemical conversion of the oil to methyl ester （ME） gave 86.56% yield. Fuel properties of hybrid oil methyl ester （the HOME） were determined in accordance with standard test methods and were found to comply with both ASTM D6751 and EN 14214 standards. The oxidative stability, cetane number and kinematic viscosity （KV） of HOME were observed to be improved when compared with those of GNO methyl ester from single parent oil, which could be accredited to the improved FA composition of the HO. The KV （3.69 minE/s） of HOME obtained in this paper was remarkably low compared with those reported in literature for most biodiesels. This value suggests better flow, atomization, spray and combustion of this fuel. Conclusively, the binary blend of oils can be a viable option to improve the fuel properties ofbiodiesel feedstock coupled with reduced cost.

关键词： groundnut oil palm kernel oil methyl ester,fuel properties tropics fatty acid composition

Woody plant diversity,structure and regeneration in the Ambo State Forest,South Gondar Zone,Northwest Ethiopia

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Journal of Forestry Research 2017年第1期28卷 133-144页

作者： solomon Melaku Melese Belayneh Ayele Department of Forestry College of AgricultureWolloUniversityP.O.Box 1145DessieEthiopia Department of Natural Resources Management Bahir DarUniversityP.O.Box 1551Bahir DarEthiopia

For this study in the Ambo State Forest on woody plant diversity, structure and regeneration, 70 quadrats, each 25 m by 25 m, were selected using a systematic random sampling technique and intervals of 100 m along a transect line. For assessing seedlings and saplings, two 2 × 10 m sub quadrats were set upon opposite sides of each main quadrat. Data on species diversity, abundance, structure, basal area, density, frequency and regeneration status were collected and analyzed using standard procedures and programs. Of 58 woody plant species identified, 69 % were trees, 16 % were shrubs, 12 % were tree/shrubs and 4 % were climbers. Fabaceae was the most speciesrich family comprising 17 species. The Shannon-Weiner diversity index was 2.73, and evenness was 0.67. The population structure in the cumulative diameter class frequency distribution revealed an interrupted and inverted J-shape with a very high decrease in higher diameter class. Acacia lahai （49 %） was the most important woody species with the highest importance value index. To maintain balanced structure, enhanced regeneration and protecting the forest from selective cutting are recommended.

关键词： Ambo Forest Diversity Structure -Importance value index Regeneration status

Perceptions and attitudes of local people towards participatory forest management in Tarmaber District of North Shewa Administrative Zone, Ethiopia: the case of Wof-Washa Forests

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Ecological Processes 2017年第1期6卷 168-183页

作者： solomon Ayele Tadesse Demel Teketay Department of Natural Resources Management College of Agriculture and Natural Resource SciencesDebre Berhan UniversityP.O.Box 445Debre BerhanEthiopia Department of Crop Science and Production Botswana University of Agriculture and Natural ResourcesPrivate Bag 0027GaboroneBotswana

Introduction:Since the last few decades,the government of Ethiopia has introduced and adopted participatory forest management(PFM)in different regions of the ***,there is a lack of research dealing with perceptions and attitudes of local people towards PFM in Wof-Washa Forests(WWF).The aim of this study was to evaluate the perceptions and attitudes of local people towards PFM implemented in *** hypothesized that the perceptions and attitudes of local people towards PFM differ with socio-economic variables,such as sex,age,level of education,family size,occupation type,annual income,length of duration of local residence,livestock,and land ***:A structured questionnaire comprised of close-and open-ended questions was developed and administered to a total of n=64 households to collect information on the perceptions and attitudes of local people towards PFM in *** statistics and multiple linear regressions were used to analyze and interpret the ***:The results revealed that socio-economic variables had significant effects on the perceptions towards“the prevalence of the problems with the existing PFM system”(39%variance explained),“the concept of PFM”(30%variance explained),and“the presence of PFM practice”(11%variance explained).Majority of the respondents accepted the PFM program introduced in WWF in order to protect and manage the *** study also revealed that socio-economic variables had significant effects on the attitudes towards“managing forests via participatory approach”(16%variance explained),“having the responsibility to protect the WWF”(40%variance explained),and“accepting the PFM practice”(54%variance explained).However,the findings suggested that there were some respondents who were yet unsure to fully accept the concept and practice of ***:Creating public awareness about PFM is crucial to alleviate the problems of deforestation and reduce the unsustainable use of the *** socio-economic var

关键词： Deforestation Respondents Socio-economic variables Structured questionnaire Wof-Washa Forests

Cloud data auditing with designated verifier

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Frontiers of Computer Science 2014年第3期8卷 503-512页

作者： solomon Guadie WORKU Chunxiang XU Jining ZHAO School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu 611731 China

An auditing scheme is a good way to prove owner＇s data outsourced to the cloud are kept intact, and a scheme capable of giving public verifiability service is a good option that some researchers have managed to build for the last few years. However, in a public auditing scheme everybody does verification of data and a possibility of leaking some secrete information to the public verifiers is an issue that data owners are unhappy with this scenario. For example, the data owner does not want anybody else to know he has the data stored in the cloud server. Motivated by the issue of privacy associated with public auditing system, we proposed a designated verifier auditing （DVA） scheme based on Steinfeld et al.＇s universal designated verifier （DV） signature scheme. Our DVA scheme authorizes a third party auditor with private verification capability. It provides private verification because the scheme involves private key of the verifier. Moreover, we present the batch auditing scheme to improve auditing efficiency. Through rigorous security analysis we showed that our scheme is provably secure in the random oracle model assuming that the computational Diffie-Hellman （CDH） problem is hard over the group of bilinear maps.

关键词： cloud data storage designated verifier data privacy storage correctness cloud computing

Views and attitudes of local people towards community versus state forest governance in Tehulederi District, South Wollo, Ethiopia

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Ecological Processes 2019年第1期8卷 29-48页

作者： Birhan Ali Woldie solomon Ayele Tadesse Sustainable Natural Resources Management Association(SUNARMA) P.O.Box 11Debre BerhanEthiopia Department of Natural Resources Management College of Agriculture and Natural Resource SciencesDebre Berhan UniversityP.O.Box 445Debre BerhanEthiopia

Introduction:Restoring the degraded sites with vegetation cover is an optimal solution to mitigate environmental *** from the 1980s,donor-assisted land rehabilitation activities were taking place in Tehulederi District,South Wollo,***,majority of the forests were destroyed;part of the problem was associated with the top-down approach of forest *** challenge is,therefore,to find a system of management that can enhance the combined effect of both the community and the *** community forestry(i.e.a forest development activity which is practiced and managed collectively by the community members on their communal land)is one such *** objectives of the study were to(1)examine the views and attitudes of local people towards community versus state forests governance and(2)evaluate the management practices implemented in the community versus state forestry and their implications on the forest status and the livelihood of local ***:A structured questionnaire consisting of closed-and open-ended questions was developed to collect quantitative data from randomly selected ***,key informant interviews and focus group discussions were conducted to gather qualitative *** statistics and multiple linear regression were used to analyze and interpret the quantitative *** data obtained through key informant interviews and focus group discussions were synthesized and narrated using a qualitative ***:Several socioeconomic variables significantly affected the views and attitudes of local people towards community versus state forests ***,local people had positive views and attitudes towards the community *** 83%of the respondents agreed to accept and practice community *** contrast,about 70%of the respondents had negative views and attitudes towards the state *** positive views and attitudes of local people towards the community forestr

关键词： Environmental disaster Focus group discussion Forest utilization and management Household survey Key informant interview Sustainable forestry

The African Moringa is to change the lives of millions in Ethiopia and far beyond

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Asian Pacific Journal of Tropical Biomedicine 2016年第4期6卷 355-356页

作者： solomon Habtemariam Pharmacognosy Research Laboratories and Herbal Analysis Services UK

Dear Editor,I vividly recall one of my medicinal plant collection trips in the southern regions of Ethiopia back in *** collecting few plants of interest,we were asking the locals to show us medicinal plants of import... 详细信息

关键词： Moringa African branches lives minutes millions collection medicinal usage collecting

Assessment of genetic variation in tomato (Solanum lycopersicum L.) inbred lines using SSR molecular markers

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Journal of Genetics and Genomics 2008年第6期35卷 373-379页

作者： solomon Benor Mengyu Zhang Zhoufei Wang Hongsheng Zhang State Key Lab of Crop Genetics and Germplasm Enhancement College ofAgriculture Nanjing Agricultural University Nanjing 210095 China Department of Agrobiodiversity Institute of Crop Science University of Kassel 34109 Kassel Germany and Leibniz Institute of Plant Genetics and Crop Plant Research （IPK） Corrensstr. 3 06466 Gatersleben Germany

A study was conducted to determine the genetic diversity of 39 determinate and indeterminate tomato inbred lines collected from China, Japan, S. Korea, and USA. Using 35 SSR polymorphic markers, a total of 150 alleles were found with moderate levels of diversity, and a high number of unique alleles existing in these tomato lines. The mean number of alleles per locus was 4.3 and the average polymorphism information content （PIC） was 0.31. Unweighted Pair Group Method with Arithmetic Mean （UPGMA） clustering at genetic similarity value of 0.85 grouped the inbred lines into four groups, where one USA cultivar formed a separate and more distant cluster. The most similar inbred lines are from USA, both with determinate type, whereas the most different lines are from USA （Us-16） and Japan （Ja-2） with determinate and indeterminate growth habit, respectively. Clustering was consistent with the known information regarding geographical location and growth habit. The genetic distance information reported in this study might be used by breeders when planning future crosses among these inbred lines.

关键词： Solanum lycopersicum L SSR markers genetic diversity growth characterization