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Evaluation of Ear and Facial Indices of Ibibio and Efik Female Children of Akwa Ibom and Cross River States, Nigeria

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Journal of Biosciences and Medicines 2024年第7期12卷 1-8页

作者： Nsikak Michael Umoh Kelechi Chinkata Uruakpa Eru Eru Mba Michael Effiong oku Theresa Isamoh Nnenna Williams Eric Agim Agaba Samson Omini Paulinus John Emah Gabriel Udo-Affah Department of Anatomical Sciences Faculty of Basic Medical Sciences College of Medical Sciences University of Calabar Calabar Nigeria

Background: The ear and face are indispensable and distinctive features for hearing and identification. Objectives: This study was designed to generate anthropometric data of the ear and facial indices of females of Efik and Ibibio children in Cross River and Akwa Ibom States, show morphological and aesthetic differences and ethnicity. Methods: A total of 600 female children (300 Efiks and 300 Ibibios) aged 2 to 10 years that met the inclusion criteria were chosen from selected primary schools in Calabar Municipality, Calabar South of Cross River State and from Uyo, Itu of Akwa Ibom State, Nigeria. Standardized measurements of face length, face width, ear length, and ear width were taken with a spreading caliper;the facial (proscopic) and ear (auricular) indices were determined. Results: Efik subjects presented a mean face length of 8.36 ± 0.06 cm, face width of 11.04 ± 0.04 cm, ear length of 4.92 ± 0.02 cm, and ear width of 3.06 ± 0.01 cm. Ibibio subjects had mean values for face length, face width, ear length, and ear width as 8.17 ± 0.05 cm, 10.75 ± 0.05 cm, 4.77 ± 0.03 cm, and 2.94 ± 0.02 cm respectively. The mean facial index and ear index for Efik subjects were 75.68 ± 0.31 and 62.16 ± 0.27 respectively;while the mean facial and ear indices for Ibibio subjects were 74.79 ± 0.36 and 61.80 ± 0.34 respectively. Statistical analysis demonstrated significant differences in face length, ear length, ear width and facial index, with the Efik subjects having higher values than Ibibio subjects (p Conclusion: The results showed hypereuryproscopic face as the prevalent face type among females of both ethnic groups, therefore can be of importance in sex, ethnic, and racial differentiation, and in clinical practice, aesthetics and forensic medicine.

关键词： Anthropometry Ear Facial Indices Identification Nigeria

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Effects of Au nanoparticle addition to hole transfer layer in organic solar cells based on copper naphthalocyanine and fullerene

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Progress in Natural Science:Materials International 2014年第3期24卷 179-183页

作者： Akihiko Nagata Takeo oku Tsuyoshi Akiyama Atsushi Suzuki Department of Materials Science The University of Shiga Prefecture

Organic solar cells based on copper naphthalocyanine(CuNc) and fullerene(C60) were fabricated, and their photovoltaic properties were investigated. C60 and CuNc were used as n-type and p-type semiconductors, respectively. In addition, the effect of Au nanoparticle addition on a hole transfer layer was investigated, and the power conversion efficiency of the devices was improved after blending the Au nanoparticles into the hole transport layer. Nanostructures of Au nanoparticles were investigated by transmission electron microscopy and X-ray diffraction. Energy levels of molecules were calculated by molecular orbital calculations, and the nanostructure and electronic properties were discussed.& 2014 Chinese Materials Research Society. Production and hosting by Elsevier B.V. All rights reserved.

关键词： Solar cell Copper naphthalocyanine Fullerene Au nanoparticle

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Fabrication and characterization of TiO2-based dye-sensitized solar cells

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Progress in Natural Science:Materials International 2011年第2期21卷 122-126页

作者： Takeo oku Nariaki KAKUTA Kengo KOBAyASHI Atsushi SUZUKI Kenji KIKUCHI Department of Materials Science The University of Shiga PrefectureShiga 522-8533Japan

Dye-sensitized solar cells TiO2with were *** phase composition and microstructures of the solar cells were examined by X-ray diffractometry and transmission electron microscopy,and the energy levels of the present solar cells were also *** results show that a solar cell mixed with xylenol orange and rose Bengal shows a higher conversion efficiency compared to solar cells with a single *** introduction of amorphous TiO2layers results in an improvement of the conversion efficiency.

关键词： solar cell TiO2 dye porphyrin microstructure

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Fabrication,nanostructures and electronic properties of nanodiamond-based solar cells

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Progress in Natural Science:Materials International 2010年第1期20卷 38-43页

作者： Akihiko NAGATA Takeo oku Kenji KIKUCHI Atsushi SUZUKI yasuhiro yAMASAKI Eiji OSAWA Department of Materials Science The University of Shiga Prefecture Orient Chemical industries Co.Ltd. Department of New Business8-1 Sanra-Higashi-MachiNeyagawaOsaka572-8581Japan 3. NanoCarbon Research Institute Ltd.3-15-1 TokidaUedaNagano386-8567Japan

Nanodiamond-based solar cells were fabricated and the photovoltaic properties were ***(C60)and fullerenol(C60(OH)10-12)were used as n-type semiconductors,and diamond nanoparticles and metal phthalocyanine derivative were used as p-type *** nanostructures of the solar cells were investigated by transmission electron microscopy and X-ray diffracometry,and the electronic property was discussed.

关键词： solar cell nanodiamond C60 phthalocyanine

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Formation and characterization of phthalocyanine dimer/C60 solar cells

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Progress in Natural Science:Materials International 2011年第1期21卷 27-30页

作者： Akihiro TAKEDA Akira MINOWA Takeo oku Atsushi SUZUKI Kenji KIKUCHI yasuhiro yAMASAKI Department of Materials Science The University of Shiga Prefecture2500HassakaHikoneShiga 522-8533Japan Orient Chemical Industries Co.Ltd.Department of New Business8-1Sanra-Higashi-MachiNeyagawaOsaka 572-8581Japan

Organic solar cells withμ-oxo-bridged gallium phthalocyanine dimer(GaPc dimer) and fullerene were produced by an evaporation method.A device based on the GaPc dimer provided a conversion efficiency of 4.2×10-3%,which is better compared to a device based on phthalocyanine *** effect was discussed with a molecular orbital calculation,and the crystalline phases of the present solar cells were investigated by X-ray *** improvement of the efficiency was discussed on the basis of the experimental results.

关键词： phthalocyanine dimmer fullerene solar cell

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Gastroprotective effect of the aqueous leaf extract of Guiera senegalensis in Albino rats

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Asian Pacific Journal of Tropical Medicine 2013年第10期6卷 771-775页

作者： Akuodor GC Essien AD David-oku E Chilaka kC Akpan JL Ezeokpo B Ezeonwumelu JOC Department of Pharmacology College of Medical SciencesUniversity of Calabar Department of Biochemistry of Medical SciencesUniversity of Calabar Department of Pharmacology and Therapeutic College of Health SciencesNnamdi Azikiwe University Department of Pharmacology and Therapeutic Faculty of Clinical MedicineEbonyi State University School of Pharmacy Kampala International University

Objective:To evaluate the effect of aqueous leaf extract of Guiera senegalensis(***)on gastric mucosal damage using different ulcer ***:Considering the above claims,the present study was undertaken to validate the gastroprotective potential of the aqueous leaf extract of this plant against ethanol,water immersion and Aspirin induced ulcer ***:The leaf extract(50,100 and 200 mg/kg,p.o.)significantly(Pys ***:The results obtained,provide strong evidence of antiulcer activity of the leaf extract of *** and support the traditional uses of the plant for the treatment of ulcer.

关键词： Guiera senegalensis Aqueous extract Ethanol Aspirin Stress induced gastric ulcers

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A Modified Averaging Composite Implicit Iteration Process for Common Fixed Points of a Finite Family of k-Strictly Asymptotically Pseudocontractive Mappings

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Advances in Pure Mathematics 2011年第4期1卷 204-209页

作者： Donatus Igbokwe oku Ini Department of Mathematics University of Uyo Uyo-Nigeria

The composite implicit iteration process introduced by Su and Li [J. Math. Anal. Appl. 320 (2006) 882-891] is modified. A strong convergence theorem for approximation of common fixed points of finite family of k-stric... 详细信息

关键词： Implicit Iteration Process k-Strictly Asymptotically Pseudo-Contractive Maps Fixed Points

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Antimalarial potency of the leaf extract of Aspilia africana(Pers.) ***

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Asian Pacific Journal of Tropical Medicine 2012年第2期5卷 126-129页

作者： Akuodor Godwin Christian Amos Grace Mfon Essien Augustine Dick Essien David-oku Akpan Joseph Linus Ezeokpo Basil Chukwuma Department Pharmacology College of Medical SciencesUniversity of CalabarNigeria Department of Pharmacology and Toxicology National Institute for Pharmaceutical Research and Development(NIPRD)AbujaNigeria Department of Biochemistry College of Medical SciencesUniversity of CalabarNigeria Department of Pharmacology and Therapeutics Faculty of Clinical MedicineEbonyi State UniversityAbakalikiNigeria

Objective:To investigate the antimalarial activity of ethanol extract of Aspilin africana (***) ***:The ethanol extract of *** leaf(100-400 mg/kg) was screened for blood schizonticidal effect against chloroquine-sensitive Plasmodium berghei(P. berghei) in mice both in early and established models of antimalarial ***:The leaf extract exhibited significant(Py in 4-day early infection and in established infection tests with a considerable mean survival time comparable to that of standard drug,chloroquine(10 mg/kg).Conclusions:The findings show thai ethanol extract of *** leaf possesses potent antiplasmodial activity which justify the use in ethnomedicine and can be developed in malaria therapy.

关键词： Aspilia africana Herbal medicine Plasmodium berghei Mice

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Fabrication of Perovskite-Type Photovoltaic Devices with Polysilane Hole Transport Layers

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Materials Sciences and Applications 2017年第2期8卷 209-222页

作者： yasuhiro Shirahata Takeo oku Sakiko Fukunishi Kazufumi Kohno Department of Materials Science the University of Shiga Prefecture Shiga Japan Frontier Materials Laboratories Osaka Gas Chemicals Co. Ltd. Osaka Japan

Perovskite-type photovoltaic devices with polysilane hole transport layers were fabricated by a spin-coating method. In the present work, poly(methyl phenylsilane) (PMPS) and decaphenylcyclopentasilane (DPPS) were used as the hole transport layers. First, structural and optical properties of the PMPS and DPPS films were investigated, and the as-prepared PMPS and DPPS films were amorphous. Optical absorption spectra of the amorphous PMPS and DPPS showed some marked features due to the nature of polysilanes. Then, microstructures, optical and photovoltaic properties of the perovskite-type photovoltaic devices with polysilane hole transport layers were investigated. Current density-voltage characteristics and incident photon to current conversion efficiency of the photovoltaic devices with the polysilane layers showed different photovoltaic performance each other, attributed to molecular structures of the polysilanes and Si content in the present hole transport layers.

关键词： Polysilane Hole Transport Layer Perovskite Photovoltaic Device

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Fabrication and Characterization of Phthalocyanine-Based Organic Solar Cells

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Materials Sciences and Applications 2014年第5期5卷 278-284页

作者： Makoto Iwase Atsushi Suzuki Tsuyoshi Akiyama Takeo oku Department of Materials Science The University of Shiga Prefecture Shiga Japan

Organic solar cells using poly (copper phthalocyanine), copper tetrakis (4-cumylphenoxy) phthalocyanine, copper phthalocyanine and titanyl phthalocyanine were fabricated and characterized. Photovoltaic properties of the solar cells with inverted structures were investigated by optical absorption, current density-voltage characteristic and incident photon to current conversion efficiency. These phthalocyanines absorbed light with wavelength longer than 500 nm. A carrier transport mechanism is proposed based on the energy level diagram.

关键词： Organic Solar Cells Phthalocyanine Copper Poly Phthalocyanine

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