检索结果-内蒙古大学图书馆

Evaluating mechanism of banana pseudo-stem retting using seawater:A cost-effective surface pre-treatment approach

Journal of Bioresources and Bioproducts 2024年第3期9卷 322-335页

作者： Prince Hotor Ahmed H.Hassanin Osbert Akatwijuka Mohamed A.H.Gepreel Mitsuo Yamamoto Yukie Saito Ahmed Abdel-Mawgood Egypt-Japan University of Science and Technology Biotechnology ProgramAlexandria GovernorateNew Borg Al Arab 21934Egypt Alexandria University Department of Textile EngineeringAlexandria GovernorateBab Sharqi 5424041Egypt Egypt-Japan University of Science and Technology Material Science and EngineeringAlexandria GovernorateNew Borg Al Arab 21934Egypt Graduate School of Agricultural and Life Sciences The University of TokyoBunkyo-KuTokyo 113-8657Japan

Retting has been employed to extract natural fibers from agricultural wastes as a biological and cost-effective approach for *** its global abundance,banana pseudo-stem is a promising agro-waste for lignocellulosic fiber *** this study,fibers were extracted from the pseudo-stems after being pre-treated under four conditions using seawater at room temperature for up to 35 d Bacterial isolation from the fresh seawater sample and screening for ligninolytic ability were *** load as well as laccase and manganese peroxidase enzyme activity profile assay during the retting duration were *** transform infrared(FT-IR)and X-day diffraction(XRD)analyses were also examined for both pre-treated and untreated extracted *** results shows that six out of the eight bacterial isolates had the ability to degrade *** treatments(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)recorded the highest viable bacterial load of 9.24×102 and 4.46×102 CFU,respectively,on the 14th day of the retting ***,the highest laccase and manganese peroxidase enzymes activity was recorded for(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)treatments in the second to the third *** FT-IR spectra of the pre-treated fibers revealed relative reductions in peaks attributed to polysaccharides and other amorphous substances for all retting *** XRD diffractogram revealed that the crystallinity index(CI)of pre-treated fibers increased in all seawater retting treatment ***,the CI for fibers pre-treated under enzymatic conditions were enhanced even after five *** analysis for selected bacterial isolates showed homology to sequences of Bacillus velezensis,Shewanella sp.L8–5,and Citrobacter amalonaticus and Bacillus subtilis j8 *** these findings,it was suggested that physical,biological,and chemical actions were collectively involved in the seawater retting process of banana ps

关键词： Seawater retting Banana pseudo-stem Natural fiber Enzyme activity Colony forming unit

来源：评论

学校读者我要写书评

暂无评论

Cationization of Cellulose Dissolved in TEAOH/urea Solvent and its Preparation of Cellulose Beads: Effect of Added Amount of GTAC

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2022年第6期54卷 85-93页

作者： Kim, Younglae Jang, Minseok Cho, Byoung-Uk Department of Paper Science & Engineering College of Forest and Environmental Science Kangwon National University Korea Republic of Program of Paper Material Science & Engineering College of Forest and Environmental Science Kangwon National University Korea Republic of

To widen the applications, cationic cellulose beads were synthesized by adding glycidyltrimethylammonium chloride (GTAC) to cellulose fibers dissolved in a mixture of tetraethylammonium hydroxide and urea at room temperature for cationic modification, and dropping the cationic cellulose solution into an acetic acid solution. Herein, the effects of the added GTAC amount on the properties of cationic cellulose soultion and cellulose beads were investigated. It was observed that increasing the amount of GTAC increased the viscosity and surface tension of the cationically modified cellulose solution and increased the particle size of the cellulose beads. Furthermore, the zeta potential of the cellulose beads can be controlled by modifying the GTAC amount. © 2022 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Chemical modification

来源：评论

学校读者我要写书评

暂无评论

Development of Novel Ternary Alloy of CSiSn for Low-Cost Next Generation Photovoltaics

Development of Novel Ternary Alloy of CSiSn for Low-Cost Nex...

引用

11th Symposium on SiGe, Ge, and Related Compounds: materials, Processing, and Devices - In Memory of Qizhi Liu, held at the PRiME 2024 Meeting

作者： Banihashemian, S.F. Mahmoudi, M. Mosleh, A. Naseem, H.A. Department of Electrical Engineering University of Arkansas FayettevilleAR72701 United States Material Science & Engineering Program University of Arkansas FayettevilleAR72701 United States

ISBN: (纸本)9781623326630

The growing need for highly efficient solar cells calls for significant advancements in the development of a new material system to meet the needs of low-cost production. Current multi-junction solar cell alternatives are more costly to produce. This research showcases the development and analysis of a novel ternary material system, The CSiSn (CST) alloy, which shows potential for creating low-cost material with high absorption across solar spectrum. In this work, the following aspects regarding the CST material are investigated: 1) material modelling using density functional theory, 2) electronic band structure estimations, 3) low-temperature material growth technique via Plasma Enhanced Chemical Vapor Deposition (PECVD) system;4) advanced material and optical characterizations of CST alloys. Copyright © 2024 by The Electrochemical Society. All rights reserved.

关键词： Ternary alloys

来源：评论

学校读者我要写书评

暂无评论

Development of a novel quality control indicator for coffee roasting based on the digitalization of smell by a portable electronic nose 20

Development of a novel quality control indicator for coffee ...

引用

20th International Joint Conference on Computer science and Software engineering, JCSSE 2023

作者： Somaudon, Varanya Sakuldee, Pathapee Kerdcharoen, Teerakiat Materials Science and Engineering Program Mahidol University Faculty of Science Bangkok Thailand School of Science Material Engineering Mae Fah Luang University Chiang rai Thailand Mahidol University Faculty of Science Department of Physics Bangkok Thailand

ISBN: (纸本)9798350300505

Northern Thailand is home to several Arabica coffee-growing regions, including Mae-kampong, Teentok, Mae-lord, and Monngo Valleys, whose coffees are featured throughout this study. These coffees have distinct aromas and flavors due to their varied cultivation locations, which are influenced by unique climatic conditions. The purpose of this paper is to comprehend the aroma of coffees brought from various locations and roasted under the same conditions. Our lab-made electronic nose (e-nose) was used to digitalize and analyze the smell of coffee. In order to monitor the coffee scent throughout roasting and assess how similar the aromas of coffee samples taken from various locations are to one another, principal component analysis and hierarchical cluster analysis were used. It was found that our e-nose system is an effective tool for determining the geo-location of the coffee origin as well as for quality control of coffee production. © 2023 IEEE.

关键词： Electronic nose

来源：评论

学校读者我要写书评

暂无评论

ENHANCING IMPACT RESISTANCE AND VIBRATION PERFORMANCE OF COMPOSITE SANDWICH PANELS USING SHAPE MEMORY ALLOYS: A LITERATURE REVIEW AND IDENTIFICATION OF RESEARCH GAPS 50

ENHANCING IMPACT RESISTANCE AND VIBRATION PERFORMANCE OF COM...

引用

50th International Conference on Computers and Industrial engineering: Sustainable Digital Transformation, CIE 2023

作者： Thomas, K.K. Hassan, N.M. Bahroun, Z. Material Science and Engineering Program American University of Sharjah Sharjah United Arab Emirates Department of Industrial Engineering American University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9781713886952

Composite sandwich panels are widely used in aeros pace and civil applications due to their lightweight nature, strength, stiffness, corrosion resistance, and sound insulation properties. However, these panels often lack sufficient resistance to impact damage, resulting in reduced mechanical performance. Shape memory alloys (SMAs) have shown potential in improving the impact resistance of composite sandwich panels. SMAs can dissipate energy through phase transformations, leading to hysteresis loops in stress -strain diagrams during structural vibrations and impact loading. This paper presents a literature review of the use of SMAs in composite sandwich panels, focusing on their impact resistance and vibration performance. Various studies on incorporating SMA in composite panels have been analyzed, considering factors such as natural vibration, buckling behavior, impact resistance, energy absorption, and fracture behavior. The findings demonstrate that SMA can enhance the performance of composite sandwich panels, leading to improved impact resistance, reduced d eflection, increased contact forces, and enhanced energy absorption. However, the optimal configuration and parameters of SMA reinforcement in composite panels require further investigation. The review highlights current research trends and identifies gaps that can be addressed for further improvement in composite sandwich panels' performance. © 2023 Computers and Industrial engineering. All rights reserved.

关键词： Stress-strain curves

来源：评论

学校读者我要写书评

暂无评论

Low-velocity Impact Behavior of Sandwich Panels with Different Core Configurations: Numerical Study 50

Low-velocity Impact Behavior of Sandwich Panels with Differe...

引用

50th International Conference on Computers and Industrial engineering: Sustainable Digital Transformation, CIE 2023

作者： Charkaoui, Assil Hassan, Noha M. Bahroun, Zied Material Science and Engineering Program American University of Sharjah Sharjah United Arab Emirates Department of Industrial Engineering American University of Sharjah Sharjah United Arab Emirates

ISBN: (纸本)9781713886952

Sandwich panels with cellular cores are increasingly prominent in several industries like marine, aerospace, and automotive, owing to their exceptional stiffness and strength-toweight ratio. Their adaptability is further enhanced by the ability to tailor properties such as size, volume fraction, and unit cell geometry. This research investigates the response of sandwich panels to low-velocity impacts, focusing on two distinct core designs: rhombic and I-shaped unit cells, each with a core volume fraction of 15%. It also examines how the impact behaviour is influenced by varying the number of unit cells. The study employs finite element analysis using ABAQUS software to determine the energy absorption capacity and plastic strain in these panels. Findings reveal that changes in the unit cell configuration and number of unit cells significantly alter the panels' energy absorption characteristics. This approach of using numerical simulations offers a cost-effective alternative to extensive experimental testing, enabling the evaluation of various topologies and structures. © 2023 Computers and Industrial engineering. All rights reserved.

关键词： Finite element method

来源：评论

学校读者我要写书评

暂无评论

Effect of Impregnation of Liquid Sodium Silicate on Thermal Properties of Paper

引用

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2022年第6期54卷 60-67页

作者： Park, Gwon-Hui Kim, Younglae Cho, Byoung-Uk Department of Paper Science & Engineering College of Forest and Environmental Sciences Kangwon National University Korea Republic of Program of Paper Material Science & Engineering College of Forest and Environmental Sciences Kangwon National University Korea Republic of

Heat-resistant insulators are the core materials in fire doors and are directly related to people’s safety in a fire. Heverever, there needs to be a material that possesses heat resistance and insulation with reasonable production cost. To develop a core material for fire doors based on recycled paper, such as copy paper and linerboard, were impregnated with liquid sodium silicate and the effects of the sodium silicate content on the thermal properties of paper were investigated. It was observed that liquid soidum silicate can be used as a flame retardant when manufacturing fire door core materials. Imprenation of liquid sodium silicate delayed both glowing and burning temperatures along with an increased weight of residues after combustion over 750℃. Hence, it is possible to manufacture an incombustible material based on recycled papers by adding liquid sodium silicate and inorganic materials that do not themally decompose over 750℃. © 2022 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Impregnation

来源：评论

学校读者我要写书评

暂无评论

Compact solar-powered plasma water generator: enhanced on-site aged seed germination with the corona dielectric barrier discharger

Compact solar-powered plasma water generator: enhanced on-si...

引用

2024 American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE 2024

作者： Xiao, Yiting Tian, Yang Xiong, Haizheng Shi, Ainong Zhu, Jun Biological Engineering University of Arkansas Fayetteville72701 United States Program of Material Science and Engineering University of Arkansas Fayetteville72701 United States Department of Horticulture University of Arkansas Fayetteville72701 United States

ISBN: (纸本)9798331302214

Seed aging adversely affects agricultural productivity by reducing germination rates and seedling vigor, leading to significant costs for seed banks and companies due to the need for frequent seed renewals. This study demonstrates the use of plasma-activated water (PAW), generated by a solar-powered corona dielectric barrier discharger, to enhance germination rates in 23-year-old frozen stored spinach seeds. Treating seeds (strain 08-415) with PAW at 17kV for 15 minutes improved germination by 135% compared to untreated seeds and notably fostered early seedling growth. Through detailed analysis, beneficial PAW properties for seed development were identified, and a mechanism at the molecular level explaining the rejuvenation effects on aged seeds was proposed. This solar-powered micro-reactor represents a significant advancement in seed treatment technology, offering a sustainable solution to meet growing food demands while addressing environmental and resource sustainability challenges. © 2024 ASABE Annual International Meeting. All rights reserved.

关键词： Dielectric barrier discharge

来源：评论

学校读者我要写书评

暂无评论

Microstructure of 2D/2D Nanosheets Interface for Improved ORR Electrochemical Kinetics

引用

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2023年第1期29卷 1352-1353页

作者： Iqbal, Anum Hamdan, Nasser M. Material Science and Engineering Program American University of Sharjah Sharjah United Arab Emirates Physics Department American University of Sharjah Sharjah United Arab Emirates

来源：评论

学校读者我要写书评

暂无评论

Change of Electrical and Transport Properties of Nickel Oxide by Carrier Concentration and Temperature through First‑Principle Calculations

引用

Nanomanufacturing and Metrology 2023年第4期6卷 109-118页

作者： Nayem Md.Reza Shah Chang‑Dong Yeo Minyeong Choi Yang‑Ki Hong Jeong H.You Department of Mechanical Engineering Texas Tech UniversityLubbockTX 79409USA Department of Electrical and Computer Engineering and Material Science Ph.D.Program The University of AlabamaTuscaloosaAL 35487USA Department of Mechanical Engineering School of EngineeringUniversity of St.ThomasSt.PaulMN 55105USA

Nickel is typically used as one of the main components in electrical contact devices or *** oxide(NiO)is usually formed on the surfaces of electrodes and can negatively impact system performance by introducing electrical contact *** thermal,electrical,and transport properties of NiO,as a Mott insulator or a p-type semiconductor,can be altered by operating and environmental conditions such as temperature and stress/strain by *** this study,we inves-tigate the fundamental material properties of NiO through the first-principle ***,we obtain and compare the lattice parameter,magnetic moment,and electronic structure for NiO via the WIEN2K simulations with four different poten-tials(i.e.,GGA,GGA+U,LSDA,and LSDA+U).Then,using the WIEN2K simulation results with LSDA+U potential that produces a highly accurate bandgap for NiO,we calculate the electrical conductivity and electrical part of the thermal conductivity of nickel and NiO as a function of temperature and carrier concentration through the BoltzTraP *** simulation results revealed that the electrical conductivity relative to the relaxation time for NiO increases with the carrier concentration,while it shows a slightly decreasing trend with temperature under a fixed carrier *** contrast,the electrical part of the thermal conductivity shows an increasing trend considering carrier concentration and temperature.

关键词： Nickel oxide Magnetic moments Density of states Seebeck coefcient Electrical conductivity

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：