Digital Commons Network^™

Combinational Dormancy Of Vicia Angustifolia Seed And Its Ecological Significance, Rui Zhang, Tingshan Li, Xiaowen Hu, Yanrong Wang

IGC Proceedings (1977-2023)

Combinational dormancy is a common phenomenon in seed of temperate legume species, however, less is known about its ecological role in an alpine environment (Hu et al. 2013). Vicia angustifolia is an annual herbaceous legume, widely distributed in the Qinghai-Tibet Plateau. The purpose of this study is to explore the seed dormancy characteristics of V. angustifolia and its ecological significance.

Traditional Syllabus Template Guidelines, Southwestern Oklahoma State University

HLC Assurance Argument Evidence

CETL provides support through this document to help faculty develop a traditional syllabus from the template. CETL also has two Teaching and Learning Coordinators who can help with the syllabus development.

Recent Disruptions In The Timing And Intensity Of Precipitation In Calakmul, Mexico, Sofia Mardero, Birgit Schmook, Zachary Christman, Sarah E. Metcalfe, Betsabé De La Barreda-Bautista

School of Earth & Environment Departmental Research

This study addresses changes in the timing and intensity of precipitation from 1982 to 2016 from three meteorological stations around Calakmul, Mexico, a landscape balancing biodiversity conservation and smallholder agricultural production. Five methods were used to assess changes in precipitation: the Mann-Kendall test of annual and wet season trends; a fuzzy-logic approach to determine the onset of the rainy season; the Gini Index and Precipitation Concentration Index (PCI) to evaluate the temporal distribution of precipitation; Simple Precipitation Intensity Index (SDII) to evaluate precipitation intensity; and the Rainfall Anomaly Index (RAI) to identify the deficit or surplus of rainfall compared with …

Clinical Characteristics Of Children With Epilepsy Managed At An Urban Hospital In Africa: A Retrospective Study, Pauline Samia, Arwen Barr, Subira B. Levi, Kirsten A. Donald, Jo M. Wilmshurst, Charles R. Newton

Paediatrics and Child Health, East Africa

Background: Most children with epilepsy reside in resource-limited regions such as sub-Saharan Africa, where the majority of studies have been conducted in rural areas with limited investigations. Medical records from children with epilepsy seen at an urban hospital in Kenya were examined to provide a comprehensive description of epilepsy in children from this hospital.
Methods: A retrospective observational study was conducted which involved reviewing medical records of 426 epilepsy patients (260 males and 166 females) aged 0 - 18 years, seen in Nairobi, Kenya between February 2011 and December 2014. Results: The most frequent age at presentation; documented in 29% …

Detection Of Pentachlorophenol In Fishery Water Using Surface-Enhanced Raman Spectroscopy, Zhang Luwen, Yu Wansong, Xia Sujie, Chen Yan, Wang Ke

Food and Machinery

A method for rapid determination of pentachlorophenol in fishery water was established by surface-enhanced Raman spectroscopy (SERS). The concentrated gold colloid was prepared to use as Raman substrate according to the classic method, and the optimal SERS enhancement effects were obtained by adjusting the pH of the system, optimizing the coagulants, nanoparticles volume and adsorption time. The method had a good linearity between the peak intensity and the pentachlorophenol concentration in the range of 0.2～4.0 μg/mL, and the detection limit was 0.5 μg/mL. The recovery ranged from 78.74% to 112.30%, and the relative standard deviation was between 6.1%～11.3%. The sensitivity …

Identification Of Nitrofuran Metabolites In Chicken By Using Surface-Enhanced Raman Spectroscopy Coupling With Principal Component Analysis-Linear Discriminant Analysis, Guo Hongqing, Liu Muhua, Yuan Haichao, Zhao Jinhui, Tao Jinjiang, Chen Jian, Xu Ning

Food and Machinery

Surface-enhanced Raman spectroscopy (SERS) using gold (Au) nanoparticles and NaCl solution as SERS enhanced substrate was applied to rapidly identify furaltadone metabolite (AMOZ) and nitrofurantoin metabolite (AHD) residues in chicken samples. The background interference was eliminated by using adaptive iterative re-weighted penalized least squares (air-PLS), and the spectra data was preprocessed by standard normalization. The samples of four groups, i.e. chicken extract containing AHD, AMOZ, AHD and AMOZ, and control, were marked in sequence, and the identification model was established by combining the principal component analysis and linear discriminant analysis (PCA-LDA). The experimental results showed that the correct discriminant rate …

The Effect Of Irradiation On Preservation Of The Solenocera Melantho During Storage, Hao Yunbin, Shao Honghong, Xiang Xingwei, Zhou Yufang, Xia Wenshui

Food and Machinery

To investigate the sterilization and preservation by radiation on the shrimp Solenocera melantho, the total number of colonies, TVB-N, pH value, amino acids, heavy metal content were measured. The results showed that 1 kGy irradiation dose could kill most of the microorganisms. The higher the irradiation dose was, the stronger the bactericidal effect did. Although the irradiation did not affect the TVB-N in the Solenocera melantho, but the TVB-N decreased with the increase of irradiation dose. The pH value of the irradiated shrimp decreased first and then rose, and the rising speed was higher than the unirradiated sample. The rate …

Lf-Nmr Combined With Electronic Nose To Analyze The Quality Changes Of Refrigerated Rainbow Trout Treated With Composite Preservative, Shen Qiuxia, Zhu Keyong, Li Mingyuan, Qian Yang, Xu Tongtong, Wu Lichuan, Yuan Yang

Food and Machinery

In order to study the effect of composite preservatives (chitosan, tea polyphenols and lemon juice) on the quality of rainbow trout fillets during storage, The fresh-keeping effects were listed as follows: texture, pH, TBA, TVB-N and the total number of colonies. LF-NMR and electronic nose technology were used to explore the changes of moisture content and volatile components during the storage. The results showed that the composite preservative group could better maintain the texture characteristics of fillets compared with the control group, and at the same time, it also could delay the TBA value, TVB-N value and total viable counts …

Morphology Controlled Preparations And Electrochemical Properties Of Znco2O4 Electrode Materials For Supercapacitors, Yue-Shen Zhou, Meng Li, Shuang Wu, Zhao-Lei Li, Yan-Min Gao

Journal of Electrochemistry

In this work, hydrothermal reaction and high temperature were used to grow ZnCo₂O₄ active materials on Ni foam. The crystal stuctures and surface morphlogies of four samples were investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The electrochemical performances were characterized by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) testing and electrochemical impedance spectroscopy (EIS) on an electrochemical station. It can be seen that active materials tended to form denser stuctures with an increasing amount of NH₄F in the solution system and four different morphologies of ZnCo_{2 …}

Electrochemical Behaviors Of Azopurine On Gold Electrodes, Ming-Xue Li, Hang Shi, Jia Liu, Meng Zhang, Jian-Zhang Zhou, De-Yin Wu, Zhong-Qun Tian

Journal of Electrochemistry

In this paper, we studied the electrochemical behaviors of azopurine on polished gold electrodes with cyclic voltammetry (CV). On the basis of analyzing scan rate and peak current, it was supposed that the redox process belonged to a reversible process controlled by adsorption in 0.2 mol·L^-1 PBS (pH = 4.0 ~ 10.0) solutions. The potentials of redox peaks moved more negatively with increasing pH value. This proved that the H⁺ proton has participcted in the electrochemical reaction. The further data analysis and the calculation of surface adsorption excess demonstrated that the reaction was a two-proton and two-electron process. …

Polyaniline Coated Hollow Sulfur Prepared Using Sublimate 2,4,6-Tri(Propan-2-Yl)-1,3,5-Trioxane As Template For Sulfur Electrode, Zhang-Feng Li, Xiao-Rui Wang, Wen-Sheng Tian, Jin-Ze Yang, Ping Zhang, Li-Ping Ma, Yang Chen, Xiao-Li Cui, Zhi-Yu Jiang

Journal of Electrochemistry

An advance method for preparing polyaniline-coated hollow sulfur material using sublimate material ADD(2,4,6-tri(propan-2-yl)-1,3,5-trioxane) as a template was developed for lithium-sulfur battery. At first, the smashed ADD particles were coated by a sulfur layer through the reaction of Na₂S₂O₃ with diluted HCl. Then polyaniline layer was coated again on the surface of sulfur layer through the reaction of aniline with (NH₄)₂S₂O₈. After being dried at 60 ^oC for 12 h, the ADD in such a composite evaporated totally, and resulted in the formation of polyaniline-coated hollow sulfur …

Transient Electrochemical Surface-Enhanced Raman Spectroscopic Study In Electrochemical Reduction Of P-Nitrothiophenol, Yun Ling, Jing Tang, Guo-Kun Liu, Cheng Zong

Journal of Electrochemistry

P-nitrothiophenol (PNTP) is one of the most common probe molecules studied by surface-enhanced Raman spectroscopy (SERS). The research in electrochemical reduction behavior of PNTP will help understanding the mechanism for the nitrobenzene reduction. In this paper, we used transient electrochemical surface-enhanced Raman spectroscopy (TEC-SERS) to study the SERS of PNTP with cyclic voltammetry and chronoamperometry on gold electrodes. The results show that the TEC-SERS provide a time resolution that equals the transient electrochemical methods, and we concluded that the reaction was so quick that we did not observe the spectral information of intermediate species described in the literatures with a …

Zif-67-Derived Ag/Co-Embedded N-Enriched Mesoporous Carbon For Oxygen Reduction Reaction, Zheng-Ling Di, Jing Zhu, Lei Dai, Wei Meng, Yue-Hua Li, Zhang-Xing He, Ling Wang

Journal of Electrochemistry

Nitrogen-doped porous carbon materials are considered as one of the most promising catalysts for oxygen reduction reaction (ORR). Herein, in order to further improve the activity of the nitrogen-doped porous carbon, Ag/Co bimetal is embedded into nitrogendoped porous carbon to form Ag/Co-embedded nitrogen-doped porous carbon material (AgCo@NC). The AgCo@NC was derived by the wet impregnation of Ag+ into ZIF-67 precursor, followed by chemical reduction and a subsequent pyrolysis process under Ar atmosphere at different temperatures (500 ℃, 600 ℃, 700 ℃). The morphologic characterization shows that the Ag/Co nanoparticles were successfully embedded in the mesoporous carbon framework with abundant nitrogen …

Quantitative Detection Of Levofloxacin Hydrochloride By Differential Pulse Stripping Voltammetry With Electrodeposited Bismuth Film Electrodes, Zi-Ying Guo, Zuo-Peng Li, Jiang Li, Jian-Guo Zhao, Feng Feng

Journal of Electrochemistry

In this study, differential pulse stripping voltammetry was developed for the quantitative detection of levofloxacin hydrochloride indirectly. Levofloxacin hydrochloride contains organic amine, which can be precipitated upon interaction with Zn(SCN)₄^2-. By means of differential pulse stripping voltammetry, the concentration of Zn²⁺ can be determined using an in-situ formed bismuth film electrode, which allows determining indirectly the amount of levofloxacine hydrochloride. The linearity equation, I = 1.1401c - 0.5309 with the correlative coefficient R = 0.9979, was presented in the experiment. The results showed that this approach is very sensitive, having a limitation of detection of 3.18 …

Hydrogen Production Of Microbial Electrolysis Cell Using Scrap Metal Net As Cathode And The Analysis Of Microbial Community Structure In Anode, Hong-Yan Dai, Hui-Min Yang, Xian Liu, Xiu-Li Song, Zhen-Hai Liang

Journal of Electrochemistry

In order to find high quality and low price hydrogen catalyst, a scrap metal net was used as single-chamber microbial electrolytic cell (MEC) cathode, and its hydrogen production performance was investigated at different applied voltages. Meanwhile, the microbial community structures of original aerobic activated sludge, MFC and MEC anode microbes were analyzed by 16S rDNA amplicon sequencing technology. As the applied voltage increased, the maximum current density was increased and the running time was shortened. At an applied voltage of 0.7 V, the hydrogen production and electrical energy efficiency obtained with scrap metal mesh cathode MEC were, respectively, 0.330±0.012 m …

Ionic Liquid Assisted Synthesis Of Porous Carbons From Rice Husk For Supercapacitors, Han-Fang Zhang, Feng Wei, Jian Sun, Meng-Ying Jing, Xiao-Jun He

Journal of Electrochemistry

It is still a challenge to prepare carbon materials with high specific surface area at low cost from renewable resources. Herein, the authors report an efficient approach to synthesize porous carbons (PCs) from rice husk with ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF₆)) as a template and an activation agent. The as-made PCs featured the high specific surface area up to 1438 m²·g^-1. As electrodes for supercapacitors, PCs showed a high specific capacitance of 256 F·g^-1 at 0.05 A·g^-1 in 6 mol·L^-1 KOH aqueous electrolyte and a good rate performance of 211 F·g …

The Effect Of Social Support On Single Mothers’ Subjective Well-Being And Its Implication For Counseling, Alif Muarifah, Dian Ari Widyastuti, Indah Fajarwati

Jurnal Kajian Bimbingan dan Konseling

The present study aimed to discover the effect of social support on single mothers’ subjective well-being. This study employed a correlational approach. One hundred fifty nine single-mothers in Bantul regency, Special Region of Yogyakarta, Indonesia were involved in this study, determined using quota sampling. The data were collected using social support and subjective well-being scales. Simple linear regression was used to analyze the data. The present study exhibited that social support significantly affects single mothers’ subjective well-being. This study can be used as a reference proving that social support is much needed by a single-mother to obtain subjective well-being. Therefore, …

The Development Of Peace Counseling Model (Pcm): Strategy Of School Counselor To Reduce Students’ Aggressive Behavior, Wahyu Nanda Eka Saputra, Yulia Ayriza, Irvan Budhi Handaka, Ediyanto Ediyanto

Jurnal Kajian Bimbingan dan Konseling

This study aimed to develop a counseling model to reduce students’ aggressive behavior, namely Peace Counseling Model (PCM). This counseling model uses the basic theory of peace education that is specifically implemented in counseling. This study adapted the research and development model formulated by Borg & Gall. The research used quantitative descriptive analysis. There was a strong agreement between experts and practitioners on the feasibility of the product being developed to be implemented by school counselor. The results of this study should be a reference to further research to test the effectiveness of PCM to reduce students’ aggressive behavior.

Socio-Ecological Interactions In The National Forests And Grasslands Of Central Oregon: A Summary Of Human Ecology Mapping Results, David Banis, Rebecca Mclain, Alicia Milligan, Krystle N. Harrell, Lee Cerveny

Occasional Papers in Geography

Occasional Papers in Geography Publication No. 8

In 2015, Portland State University, the US Forest Service’s Pacific Northwest Research Station, Deschutes National Forest (DNF), Ochoco National Forest (ONF), US Forest Service Region 6, and Discover Your Forest embarked on a collaborative project to understand spatial patterns of public use on the national forests and grasslands of Central Oregon and the ecosystem benefits attached to those places. At the time the project began, the DNF and ONF anticipated that they would be revising their forest/grassland plans in the near future. This human ecology mapping project generated socio-spatial data layers describing the …

Hybrid External Cavity Laser With An Amorphous Silicon-Based Photonic Crystal Cavity Mirror, Simone Iadanza, Chinna Devarapu, Alexandros Liles, Robert Sheehan, Liam O'Faoláin

Cappa Publications

The authors present results on the performance of a hybrid external cavity photonic crystal laser-comprising semiconductor optical amplifier, and a 2D photonic crystal cavity fabricated in low-temperature amorphous silicon. The authors demonstrate that lithographic control over amorphous silicon photonic crystal cavity-resonant wavelengths is possible, and that single-mode lasing at optical telecommunications wavelengths is possible on an amorphous silicon platform.

In Vitro Effectiveness Of Neem Oil (Azadirachta Indica A. Juss) Shampoo As Anti Head Lice (Pediculus Humanus Capitis), Norisca A. Putriana, Azizul Hakim, Patihul Husni, Taofik Rusdiana

Pharmacology and Clinical Pharmacy Research

Head lice (Pediculus humanus capitis), a parasite causing hair problem, often occurs in society.The study aimed to evaluate in vitroeffectiveness of shampoo formulation containing neem oil as an anti head lice. An experimental method was used to examine the formulation of shampoo, irritation test, testing the effectiveness of shampoo against head lice (Pediculicidal activity), and testing the effectiveness of shampoo against nits (Ovicidal activity). The effectiveness test employed an in vitromethod where neem oil shampoo were tested directly towards head lices and nits isolated from humans, then the mortality was observed. To recognize the safety of the shampoo, skin and …

Disrupting The Heteronormative Mindset In Teacher Preparation Through Inclusive Children's Literature, Denise I. Donahue

USF Tampa Graduate Theses and Dissertations

Because of discrimination that presents itself through bullying based on identity, and the lack of positive LGBTQIA+ representation within classroom lessons, there is a need for a higher quality of preparation for teachers in order to create inclusive environments.

All teachers, particularly new teachers, need to know how to effectively work with diverse learners to meet their needs academically, emotionally and socially. This includes preparing teachers to instruct students and work with families who include LGBTQIA+ members. LGBTQIA+ students are often marginalized, discounted, harassed or invisible. (Kosciw, Greytak, Zongrone, Clark, & Truong, 2018). There is a need for a higher …

Algorithms For Regular Synthesis Of Adaptive Systems Management Of Technological Objects Based On The Concepts Of Identification Approach, Husan Zakirovich Igamberdiev, Jasur Usmonovich Sevinov

Chemical Technology, Control and Management

Stable algorithms of adaptive control, estimation of controller parameters, synthesis of adaptive control of dynamic objects by the criterion of minimum dispersion, and synthesis of suboptimal adaptive-local control of dynamic objects based on predictive models are presented. Algorithms for the stable identification of dynamic control objects based on regularization and pseudoinversion methods based on a singular decomposition are presented. Based on the use of approximations in the form of a finite sum of Gaussian distributions, recurrent identification algorithms have been developed using multiple models and adapting their parameters. Stable algorithms are proposed for identifying the parameters of an object and …

Release Condition And Sustained-Release Behavior Simulation Of Grass Carp (Ctenopharyngodon Idella) Fish Oil Microcapsule Core Material, Liu Xiaoli, Wei Changqing, Xia Wenshui

Food and Machinery

With grass carp fish oil as core material, soybean protein isolate and chitosan as composite wall material, fish oil microcapsules were prepared by ultrasonic assisted homogenization and spray drying. In order to determine the release performance of core materials under different storage temperature, relative humidity and light intensity, the release kinetics of microcapsules under different storage conditions were investigated. The results indicated that release kinetic equations were significant and credible, with R² greater than 0.97. Moreover, the release mechanism parameters were fouls less than 1 under theconditions of 4~50 ℃ and 34% relative humidity, which belonged to the diffusion-limited …

Nutrient Analysis Of The Fine Wheat Bran Powder And Its Application In Bread Making, Lan Xiaoguang, Wang Ning, Wang Xufeng, Wang Fengling

Food and Machinery

The fine wheat bran powder was separated from wheat bran through grinding bran with cutting machine combined with spraying and screening. Analysis of its nutrient composition, the effects of the fine wheat bran powder on the nutrients of flour as well as its baking characteristics were studied by determining the dough rheological properties and baking experiments. The results showed that the protein and dietary fiber content of the fine wheat bran powder were up to 15.8% and 33.6%, respectively, which was rich in potassium, calcium, iron and other minerals. With the increasing of the fine wheat bran powder in the …

Research Progress On Extracting Chitin From Shrimp Shells By Ionic Liquids, Li Yan, Gao Jing, He Xiaoyan, Yan Laixi

Food and Machinery

In this paper, the extraction of chitin from shrimp shells with ionic liquids was reviewed in terms of the dissolution characteristics of chitin and shrimp shells in ionic liquids, and composition analysis and structure characterization of the chitin extract. Provide a theoretical basis for utilization of shrimp waste.

Crisis And Planning In Five European National Libraries, Ana R. Pacios

Library Philosophy and Practice (e-journal)

This study aimed firstly to provide a rough estimate of the effects of the economic crisis on five European national libraries (Austria, Denmark, Malta, Portugal and Spain). Secondarily it sought to establish the possible benefits for these libraries of having a strategic plan during that period. The approach consisted in an online survey targeting the directors of European national libraries with membership in the Conference of European National Librarians. The method was a questionnaire contained 14 structured questions under four major headings designed to gather information on the impact of the crisis, libraries’ response and the measures adopted. It also …

Effects Of Al-Doping On Properties Of Ni-Rich Cathode Materials Employing Different Aluminum Sources, Dan-Feng Wang, Yi-Xiao Li, Wei-Li Wang, Yong Yang

Journal of Electrochemistry

In order to investigate the effects of Al-doping on the structure, morphology and electrochemical performance of Ni-rich layered oxides, the NCA cathode materials with a nominal chemical formula of LiNi_0.8Co_0.15Al_0.05O₂ were prepared by two methods with different aluminum sources. One was the solid phase method: the precursor (Ni_0.84Co_0.16(OH)₂) prepared by co-precipitation was mixed with lithium and aluminum source (nano-Al₂O₃ or Al(NO₃)₃) thoroughly, and calcined at 780 ℃ for 15 h under an oxygen atmosphere. The other was the co-precipitation method: …

Study On Electro-Sorption Of Heavy Metals And Sulfamethoxazole On Activated Carbon Fibers, Wen-Jun Zhao, Bing-Xin Jia, Ya-Nan Zhang, Jiu-Nian Guan, Jiao Qu, Ying Lu

Journal of Electrochemistry

To study the optimal removal condition, adsorption mechanism and comparative analysis of the three typical cationic pollutants, i.e., Zn(II), anionic pollutant Cr(VI) and molecular pollutant sulfamethoxazole (SMX), using self-made upflowed electro-sorption device for adsorptions of above three pollutants by modified activated carbon fiber were researched. The activated carbon fiber (ACF) was modified by hydrochloric acid. The ACF morphology and structure before and after modification were characterized by SEM, BET and FTIR. The characterization results show that the modified ACF had fewer surface impurities than the modified surface and the gully is more obvious, the specific surface area was increased by …

Electrochemical Preparation And Photocatalytic Performance Of Lanio3/Tio2 Nanotube Arrays, Cheng Gong, Ze-Yang Zhang, Si-Wan Xiang, Lan Sun, Chen-Qing Ye, Chang-Jian Lin

Journal of Electrochemistry

The LaNiO₃/TiO₂ nanotube arrays were prepared by pulse electrodeposition combined with high temperature annealing. The LaNiO₃ nanoparticles modified on the TiO₂ nanotube arrays had small particle size (< 10 nm), uniform distribution and controllable loading. Some LaNiO₃ nanoparticles were deposited inside the TiO₂ nanotubes. The UV-visible absorption spectra displayed that the absorption band edge of LaNiO₃/TiO₂ nanotube arrays was obviously red-shifted as compared with that of TiO₂ nanotube arrays, and the visible light absorption was enhanced significantly. The photocatalytic degradation results of rhodamine B (RhB) under visible light showed that the LaNiO₃/TiO₂ nanotube arrays prepared …