检索结果-南通市图书馆

Study of Rice Husks and Expanded Polystyrene Composites for Construction Applications

Open Journal of Civil Engineering 2024年第3期14卷 456-468页

作者： Edem Chabi Valéry Kouandété doko Sena Peace Hounkpè Paul Damien Amadji Emmanuel Olodo Laboratory of Rural Engineering School of Rural Engineering National University of Agriculture Ketou Benin Laboratory of Applied Energy and Mechanics (LEMA) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Department of Civil Engineering Higher National School of Public Works (ENSTP) National University of Sciences Technologies Engineering and Mathematics Abomey Benin

In the current context of environmental challenges, this study focuses on developing innovative and eco-friendly composites using rice husk and recycled expanded polystyrene. This dual-responsibility approach valorizes a by-product like rice husk, often considered waste, and reuses polystyrene, a plastic waste, thereby contributing to CO2 emission reduction and effective waste management. The manufacturing process involves dissolving recycled polystyrene into a solvent to create a binder, which is then mixed with rice husk and cold-compacted into composite materials. The study examines the impact of two particle sizes (fine and coarse) and different proportions of recycled polystyrene binder. The results show significant variations in the mechanical characteristics of the composites, with Modulus of Rupture (MOR) values varying from 2.41 to 3.47 MPa, Modulus of Elasticity (MOE) ranging from 223.41 to 1497.2 MPa, and Stiffness Coefficient (K) from 5.04 to 33.96 N/mm. These characteristics demonstrate that these composites are appropriate for various construction applications, including interior decoration, panel claddings, and potentially for furniture and door manufacturing when combined with appropriate coatings. This study not only highlights the recycling of agricultural and plastic waste but also provides a localized approach to addressing global climate change challenges through the adoption of sustainable building materials.

关键词： Rice Husk Recycled Expanded Polystyrene Eco-Friendly Composites Waste Valorization Sustainable Construction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Performance Evaluation of Novel Eco-Materials Composed of Millet Husks, Rice Husks, and Polystyrene

引用

Open Journal of Composite Materials 2024年第1期14卷 33-43页

作者： Paul Damien Amadji Edem Chabi Valéry Kouandété doko Céphas Houndedji Emmanuel Olodo Laboratory of Applied Energy and Mechanics (LEMA) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Laboratory of Rural Engineering School of Rural Engineering National University of Agriculture Kétou Benin

Managing agricultural waste and expanded polystyrene (EPS) poses significant environmental and economic challenges. This study aims to create composites from millet husks, rice husks, and recycled EPS, using a manufacturing method that involves dissolving the polystyrene in a solvent followed by cold pressing. Various particle sizes and two binder dosages were investigated to assess their influence on the physico-mechanical properties of the composites. The mechanical properties obtained range from 2.54 to 4.47 MPa for the Modulus of Rupture (MOR) and from 686 to 1400 MPa for the Modulus of Elasticity in Bending (MOE). The results indicate that these composites have potential for applications in the construction sector, particularly for wood structures and interior decoration. Moreover, surface treatments could enhance their durability and mechanical properties. This research contributes to the valorization of agricultural and plastic waste as eco-friendly and economical construction materials.

关键词： Bio-Based Composites Millet Husk Rice Husk Expanded Polystyrene Waste Valorization Sustainable Construction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development and Characterization of Particle Boards Based on Sorghum Husk

引用

Open Journal of Applied Sciences 2024年第9期14卷 2460-2470页

作者： Hamed Tidjani Tabe Gbian Edem Chabi Valéry Kouandété doko Kora Farid Carlos Yarou Emmanuel Olodo Laboratory of Applied Energy and Mechanics (LEMA) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Laboratory of Rural Engineering School of Rural Engineering National University of Agriculture Ketou Benin

This study tackles current environmental challenges by developing innovative and eco-friendly particle boards utilizing sorghum husk, combined with recycled expanded polystyrene (EPS). This dual eco-responsible approach valorizes sorghum husk, often deemed agricultural waste, and repurposes EPS, a plastic waste, thus contributing to CO2 emission reduction and effective waste management. The manufacturing process involves dissolving recycled polystyrene within a solvent to create a binder, which is then mixed with sorghum husk and cold-pressed into composite boards. The study explores the impact of two particle sizes (fine and coarse) and two different concentrations of the recycled EPS binder. Results demonstrate significant variations in the boards’ mechanical properties, displaying a range of Modulus of Rupture (MOR) from 0.84 MPa to 3.85 MPa, and Modulus of Elasticity (MOE) spanning from 658.13 MPa to 1313.25 MPa, influenced by the binder concentration and particle size. These characteristics suggest that the boards can be effectively used in various construction applications, including interior decoration, false ceilings, and potentially for furniture and door manufacturing when combined with appropriate coatings. This study not only exemplifies the valorization of plastic and agricultural wastes but also offers a practical, localized solution to global climate change challenges by promoting sustainable construction materials.

关键词： Eco-Material Bio-Sourced Material Sorghum Husk Particle Board Recycled Expanded Polystyrene Sustainable Construction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Physico-Mechanical Characteristics of Earth Bricks Stabilized with Cement and Padouk Sawdust Residues

引用

Open Journal of Applied Sciences 2024年第7期14卷 1788-1806页

作者： Gabin Alex Nouemssi Bennis Amine Martin Ndibi Mbozo’O Bonaventure Djeumako doko K. Valery Guy Edgar Ntamack LA2MP: Laboratory of Mechanics Materials and Photonics National School of Agro-Industrial Sciences ENSAI Ngaoundr Cameroun Department of Mechanical and Production Engineering National School of Agro-Industrial Sciences ENSAI Ngaoundr Cameroun LMTM: Laboratory of Mechanics Materials and Thermal National School of Mineral Industry ENIM Rabat Morocco LEMA: Laboratory of Energertic and Applied Mechanics University of Abomey-Calavi Cotonou Benin GMMA: Group of Mechanics Materials and Acoustics Department of Physics Faculty of Sciences-EGCIM Ngaoundr Cameroun

The objective of this work is to improve the physical and mechanical properties of stabilized earth blocks (BTC) used in construction in the Ndé department of Cameroon. To achieve this, two stabilizers, cement and sawdust, were used at varying percentages of 0%, 4%, 6%, and 8%. Physical characterization tests, including natural water content, specific weight, jar test, Protor, and Atterberg limits, were conducted. Additionally, mechanical tests, such as compression and three-point bending, were performed. The results show that as the amount of stabilizer increases, the density of BTC decreases. The samples with 8% sawdust have the highest density, while those without stabilizers have the lowest. Porosity decreases as sawdust and cement content increases, with smaller values observed in samples with 8% sawdust or cement. Our tests indicate that blocks stabilized with cement have slightly higher compressive strength than those stabilized with sawdust. However, the water absorption rate increases with higher sawdust content.

关键词： Earth block Cement Sawdust Physico-mechanical Characteristics Bangante West Cameroon

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Improvement of Glacial Lakes Detection under Shadow Environment Using ASTER Data in Himalayas, Nepal

引用

Chinese Geographical Science 2013年第2期23卷 216-226页

作者： CHEN Wenbo FUKUI Hiromichi doko Tomoko GU Xingfa Graduate School of Media and Governance Keio University Chubu Institute for Advanced Studies Chubu University Research Institute of Environment and Information Sciences Yokohama National University JSPS Research Fellow Institute of Remote Sensing Applications Chinese Academy of Sciences

The detection of glacial lake change in the Himalayas, Nepal is extremely significant since the glacial lake change is one of the crucial indicators of global climate change in this area, where is the most sensitive area of the global climate changes. In the Hima- layas, some of glacial lakes are covered by the dark mountains＇ shadow because of their location. Therefore, these lakes can not be de- tected by conventional method such as Normalized Difference Water Index （NDWI）, because the reflectance feature of shadowed glacial lake is different comparing to the ones which are located in the open flat area. The shadow causes two major problems： 1） glacial lakes which are covered by shadow completely result in underestimation of the number of glacial lakes; 2） glacial lakes which are partly iden- tified are considered to undervalue the area of glacial lakes. The aim of this study is to develop a new model, named Detection of Shadowed Glacial Lakes （DSGL） model, to identify glacial lakes under the shadow environment by using Advanced Space-borne Ther- mal Emission and Reflection Radiometer （ASTER） data in the Himalayas, Nepal. The DSGL model is based on integration of two dif- ferent modifications of NDWI, namely NDWls model and NDWIshe model. NDWI~ is defined as integration of the NDWI and slope analysis and used for detecting non-shadowed lake in the mountain area. The NDWIshe is proposed as a new methodology to overcome the weakness of NDWI~ on identifying shadowed lakes in highly elevated mountainous area such as the Himalayas. The first step of the NDWIshe is to enhance the data from ASTER 1B using the histogram equalization （HE） method, and its outcome product is named AS- TERho. We used the ASTERhe for calculating the NDWIhc and the NDWIshe. Integrated with terrain analysis using Digital Elevation Model （DEM） data, the NDWIshe can be used to identify the shadowed glacial lakes in the Himalayas. NDWIs value of 0.41 is used to identify the glacier lake （NDWI~ 〉 0.

关键词： glacial lake shadow environment DSGL model ASTER remote sensing Himalayas Nepal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interpretation of architectural identity through landmark architecture： The case of Prishtina, Kosovo from the 1970s to the 1980s

引用

Frontiers of Architectural Research 2017年第4期6卷 480-486页

作者： Teuta Jashari- Kajtazi arta Jakupi University of Prishtina "Hasan Prishtina" Faculty of Civil Engineering and Architecture Bregu i Diellit p.n. 10 000 Prishtina Kosovo

The period in Kosovo from the 1970s to the early 1980s is important yet insufficiently explored. The period is characterized by a liberal approach toward the development of the region. Such development of Kosovo was evident in all spheres of life, including architecture, which functions as an integral part of a society and its progress. This progress was ＂supported＂ with an intention to overpower the existing architectural environment and the overall identity of the region in some way. However, when this progress was realized wherein numerous buildings considered important were materialized, an intention to have the earlier and ＂original＂ spatial structures to be replaced became evident. In the case of Kosovo, the term ＂liberal＂ can be understood negatively and positively. From the architectural viewpoint, desi^Ins tend to follow technological advances and ＂trends＂ of the time. Consequently, the materialization of such buildings, which are surrounded by symbolisms related to different types of identity and leading toward regional modernism, is an important part to emphasize. The current study aims to consider important thoughts about architectural identity and its categories in general but specific to the context of Kosovo. The history of the region has a critical story of influences toward its formation. Although several philosophies were accepted by the mass, others produced the antidote of the actual input. This study considers theimportance of finding the best possible interpretation of Kosovo＇s architectural identity, such that Kosovo can be well known in the future as it was in the past.

关键词： Identity in architec-ture Modern regionalism CMtical regionalism European identity Architecturaltraditional

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

内源性CD34＋脂肪干细胞在提高人类脂肪移植效果持久性中的优势：一项异种移植模型

引用

中国美容整形外科杂志 2014年第4期25卷 I0016-I0016页

作者： Brian J. Philips Tara L. Grahovac Jolene E. Valentin Christopher W. Chung Jacqueline M. Bliley Melanie E. Pfeifer Sohini B. Roy Stephanie Dreifuss arta kelmendi-doko Russell E. Kling SudheerK. Ravuri Kacey G. Marra Vera S. Donnenberg Albert D. Donnenberg J. Peter Rubin 魏峰高景恒张晨美国宾夕法尼亚州匹兹堡匹兹堡大学整形外科与生物工程部匹兹堡大学癌症中心 McGowan再生医学研究中心《中国美容整形外科杂志》编辑部大连大学附属新华医院整形外科

背景与目的脂肪移植是一项很有前景的软组织填充增大技术，但移植疗效持久性存在高度不可预知性，而且影响移植成活率的因素尚未明确。因为具有分化的潜能和释放生长因子的能力，脂肪来源干细胞（adipose-derivedstemcells，ADSCs）可... 详细信息

背景与目的脂肪移植是一项很有前景的软组织填充增大技术，但移植疗效持久性存在高度不可预知性，而且影响移植成活率的因素尚未明确。因为具有分化的潜能和释放生长因子的能力，脂肪来源干细胞（adipose-derivedstemcells，ADSCs）可在移植修复过程中起关键作用。我们旨在确定ADSCs在人体脂肪中呈现的生物学特性是否与移植体积的体内效果保持存在关联。方法利用标准的离心分离技术对从8例人体受术者获取的脂肪抽吸物进行处理，然后将其注射至6周龄无胸腺裸鼠躯体两侧。测量移植物的质量和体积，于移植后8周进行包含针对血管的CD31^＋染色的组织学评估。从各供体脂肪抽吸物中分离获取基质血管细胞群（stromalvascularfraction，SVF），利用多参数流式细胞术对其表面标记物进行分析，并对其增值、分化能力和正常含氧量／低含氧量血管内皮细胞生长因子（vas—cularendothelialgrcwlhfactor，VEGF）的分泌情况进行实验研究。结果从不同供体中获取的SVF，其CD34^＋祖细胞含量百分率存在较大差异，其平均值为21．3％±15．O％（X±s）。SVF细胞的增殖速率和成脂潜能在不同供体间存在较为中等差异。在小鼠异种移植研究中，移植后8周体积保存的量约为36％～68％，总体平均值为52％±11％。SVF中CD34^＋祖细胞的含量与脂肪移植效果持久性方面存在较强的关联（P〈0．05）。结论在不同患者之间，其脂肪组织的内在生物学特性存在差异。特别是SVF中CD34^＋祖细胞的浓度可能是影响脂肪移植持久性的因素之一。

关键词：异种移植模型疗效持久性脂肪干细胞脂肪移植血管内皮细胞生长因子 CD34+ CD34^+祖细胞内源性

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Symptomatic subserosal gastric lipoma successfully treated with enucleation

引用

World Journal of Gastroenterology 2008年第38期14卷 5930-5932页

作者： Avdyl Selmon Krasniqi Faton Tatil Hoxha Besnik Xhafer Bicaj Shemsedin Isuf Hashani Shpresa Mehmet Hasimja Sadik Mal kelmendi Lumturije Hasan Gashi-Luci University Clinical Center of Kosova Prishtina 10000 Kosovo

Gastric lipomas are rare tumors, accounting for 2%-3% of all benign gastric tumors. They are of submucosal or extremely rare subserosal origin. Although most gastric lipomas are usually detected incidentally, they can cause abdominal pain, dyspeptic disorders, obstruction, invagination, and hemorrhages. Subserosal gastric lipomas are rarely symptomatic. There is no report on treatment of subserosal gastric lipomas in the English literature. We present a case of a 50-year-old male with symptomatic subserosal gastric lipoma which was successfully managed with removal, enucleation of lipoma, explorative gastrotomy and edge resection for histology check of gastric wall. The incidence of gastric lipoma, advanced diagnostic possibilities and their role in treatment modalities are discussed.

关键词： Stomach neoplasm Subserosal gastric lipoma Dyspeptic disorders Surgical treatment/enucleation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Association of human leukocyte antigen DQB1 and DRB1 alleles with chronic hepatitis B

引用

World Journal of Gastroenterology 2014年第25期20卷 8179-8186页

作者： Levent Doganay arta Fejzullahu Seyma Katrinli Feruze Yilmaz Enc Oguzhan Ozturk Yasar Colak Celal Ulasoglu Ilyas Tuncer Gizem Dinler Doganay Department of Gastroenterology Goz-tepe Teaching and Research HospitalMedeniyet University Department of Gastroen-terology Umraniye Teaching and Research Hospital Department of Molecular Biology and Genetics Istanbul Tech-nical University

AIM: To investigate the effect of human leukocyte antigen (HLA) DRB1 and DQB1 alleles on the inactive and advanced stages of chronic hepatitis B.

关键词： Chronic active hepatitis Cirrhosis Hepatitis B Human leukocyte antigen DQ Human leukocyte antigen DR

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Observation-Oriented Causal Discovery for Cultivation Abandonment of Rice Terraces: Focusing on an Effect of Cultural Endemism on Decision-Making in Toraja, Indonesia

引用

Agricultural Sciences 2016年第2期7卷 100-113页

作者： Ayako Oide Osamu Kozan Tomoko doko Wenbo Chen Center for Southeast Asian Studies Kyoto University Kyoto Japan Graduate School of Asian and African Area Studies Kyoto University Kyoto Japan Nature & Science Consulting Co. Ltd. Yokohama Japan Keio Research Institute at SFC Keio University Fujisawa Japan

Previous discussion about the factors of the expanding trend of abandoned cultivation had focused only on universal factors and lacked evaluation of the regionality of the phenomenon. This paper demonstrated the Toraja’s regional characteristics and the influence of cultural endemism on decision-making about abandoning cultivation by an observation-oriented approach. Based on a causal framework constructed by field observation and geospatial data generation, an adjustment for overt covariates using the multivariate logistic regression model to draw the causal effect from hidden covariates was examined in two rice terraces with different water systems, i.e. irrigated field and rain-fed field. The result of sub-group analysis revealed that decisions about abandoning cultivation in Toraja were greatly associated with disadvantageous factors for intensive farming, i.e. “number of adjacent fields” and “soil erosion” rather than advantageous factors, i.e. “area of field” and “distance to roads”. Moreover, the result of interaction analysis which controlled the effect of topography revealed the powerful effect of particular decision factors only in rain-fed rice terrace: the “distance to roads” factor’s fairly negative contribution on abandoning cultivation (Odds ratio = 9.94E - 01, P value = 2.03E - 11), as well as the “number of adjacent field” factor’s positive contribution on abandoning cultivation (Odds ratio = 1.13E+00, P value = 3.65E - 04). Given the evidence from the explanation of these results by customary laws and land inheritance system for each site, therefore, it could be concluded that the screening and detection of cultural endemism’s influence was achieved using the algorithm this paper proposes.

关键词： Cultivation Abandonment Decision-Making Rice Terrace Observation-Oriented Multivariate Logistic Regression Sub-Group Interaction InSAR Soil Erosion GIS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：