检索结果-内蒙古大学图书馆

Sesquiterpenes from the Saudi Arabian Red Sea sponge Lamellodysidea herbacea

Phytochemistry Letters 2025年 67卷

作者： Tammam, Mohamed A. Tziveleka, Leto-Aikaterini Duarte, Carlos M. Ioannou, Efstathia Roussis, Vassilios Section of Pharmacognosy and Chemistry of Natural Products Department of Pharmacy National and Kapodistrian University of Athens Panepistimiopolis Zografou Athens 15771 Greece Department of Biochemistry Faculty of Agriculture Fayoum University Fayoum 63514 Egypt Marine Science Program Division of Biological and Environmental Sciences and Engineering King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia

Eleven sesquiterpenes (1–11), with the majority of them decorated with either a furan or a γ-lactone moiety in their carbocycle, were isolated from an organic extract of the marine sponge Lamellodysidea herbacea collected from the coral reefs in the vicinity of Thuwal in Saudi Arabia. Two of the isolated metabolites (1 and 2) are not previously described, whereas the linear furanosesquiterpene 11 is reported for the first time from a natural source. The structures and the relative configurations of the isolated metabolites have been determined through extensive analysis of their NMR and MS data. Compounds 1–11 were evaluated for their antibacterial and antioxidant activity but did not display any noteworthy activity. © 2025 Phytochemical Society of Europe

关键词： Dysideidae Lamellodysidea herbacea Red Sea Saudi Arabia Sesquiterpenes Sponge

来源：评论

学校读者我要写书评

暂无评论

Evaluation of formulated strigolactone analogs for Striga management in Kenyan agriculture

引用

Journal of Agriculture and Food Research 2025年 21卷

作者： Jamil, Muhammad Mutinda, Sylvia Wang, Jian You Barminga, Damaris Mwihaki, Agnes Navangi, Lynet Okiyo, Teresa O. Patil, Rohit H. Ngatia, Titus Mudavadi, Patrick Runo, Steven Al-Babili, Salim The BioActives Lab Biological and Environmental Science and Engineering King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Department of Biochemistry Microbiology and Biotechnology Kenyatta University Nairobi 43844 - 00100 Kenya Kenya Agricultural and Livestock Research Organisation Alupe Center Busia 399-50400 Kenya Kenya Agricultural and Livestock Research Organisation Kibos Center Kisumu Kenya UPL House Express Highway Bandra-East Maharashtra Mumbai 400 051 India UPL Kenya Leadership Team Nairobi 00100 Kenya Plant Science Program Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia

Striga hermonthica, an obligate root parasitic weed affecting cereal crops, poses a significant threat to global food security in Sub-Saharan Africa (SSA). Germination of Striga seed largely relies on signaling molecules released by the host roots, mainly strigolactones (SLs). Suicidal germination is an effective strategy for reducing Striga seed banks in infested soils by applying SL analogs in the absence of a host. However, the challenge remains in developing suitably formulated SL analogs for field application. In this report, we assessed the activity of two SL analogs, MP3 and Nijmegen-1, in both granular and liquid formulations in laboratory and greenhouse settings, and conducted mini-field and field trials to evaluate their effectiveness under farmers’ conditions, using maize as the host crop in Kenyan agriculture. We observed a significant induction of Striga seed germination reaching up to 56 % in laboratory germination bioassays and a reduction in Striga emergence by up to 77 % in greenhouse pot studies. In mini- and field trials in different infested fields, we recorded up to 80 % and 65 % reduction in Striga emergence, respectively. In conclusion, the formulated SL analogs demonstrate significant potential to reduce Striga infestation in maize fields in Kenya and are promising candidates for use by farmers due to their simplicity, ease of handling, stability, and effectiveness. © 2025 The Authors

关键词： Field trials Maize Methyl Phenlactonoate Nijmegen-1 Striga Strigolactones

来源：评论

学校读者我要写书评

暂无评论

Development of ceramic membranes from sugarcane bagasse ash for microfiltration of biodiesel production effluents

引用

Open Ceramics 2025年 22卷

作者： Pin, Clarissa Ferreira Brandler, Danieli Flores, Gabriela Cristina Perusin Kubiaki Levandoski, William Mateus Bruschi, Giovani Jordi Pelissaro, Deise Trevizan Dervanoski, Adriana Korf, Eduardo Pavan Pasquali, Gean Delise Leal Graduate Program in Enviromental Science and Technology Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil Departament of Civil Engineering Integrated Regional University of Alto Uruguai and Missões – Erechim/RS 99709-910 Brazil Departament of Environmental and Sanitary Engineering Federal University of Fronteira Sul Erechim/RS 99700-970 Brazil

Ceramic membranes have emerged as a promising solution for microfiltration processes, offering advantages such as cost-effectiveness, environmental benefits, and the utilization of abundant raw materials derived from agro-industrial solid waste. This study investigates the fabrication and performance of ceramic membranes composed of kaolin the varying proportions of sugarcane bagasse ash (SCBA - 40 wt % and 60 wt %), with focus on efficiency in treating biodiesel wastewater. The membranes were characterized (porosity, average pore diameter, and mechanical strength). The membrane containing 40 wt % SCBA - employed without any pre-treatment- exhibited the best overall performance, achieving porosity of 38.5 %, an pore diameter of 0.9 µm, and mechanical strength of 27 MPa, indicating a favorable balance between permeability and structural integrity. The best-performing membrane achieved removal efficiencies of color 83 % and turbidity 67 %. Microstructural analysis revealed a network of interconnected mesopores, which are particularly effective for the retention of colloidal and suspended contaminants. © 2025 The Authors

关键词： Agro-industrial solid waste Industrial effluent Membrane filtration

来源：评论

学校读者我要写书评

暂无评论

Advancing the 2030 agenda with community importance-performance perspective and public relations strategies for community-based sanitation

引用

Sustainable Futures 2025年 9卷

作者： Sofiyah, Evi Siti Sianipar, Imelda Masni Juniaty Rahman, Ari Rafida, Hanifa Athaya Suhardono, Sapta Lee, Chun-Hung Suryawan, I Wayan Koko Department of Environmental Engineering Faculty of Infrastructure Planning Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Department of International Relations Faculty of Social Science and Political Science Universitas Kristen Indonesia Jakarta 13630 Indonesia Environmental Sciences Study Program Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta 57126 Indonesia Department of Natural Resources and Environmental Studies College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan Center for Environmental Solution (CVISION) Universitas Pertamina Jalan Sinabung II Terusan Simprug Jakarta 12220 Indonesia Center for Interdisciplinary Research on Ecology and Sustainability College of Environmental Studies and Oceanography National Dong Hwa University Hualien 97401 Taiwan

This study addresses the critical challenge of achieving sustainable sanitation practices in the Komodo subdistrict, focusing on the role of community engagement and public relations strategies in advancing the 2030 Agenda for Sustainable Development. Sustainable sanitation is essential for public health, environmental protection, and overall community well-being, yet its implementation often faces barriers, including community resistance, lack of awareness, and inconsistent service quality. By employing Importance-Performance Analysis (IPA), this research evaluates community perceptions of key sanitation indicators, identifying both successful aspects and areas that require improvement to meet sustainability goals. The results reveal that indicators such as septic system adoption, desludging service quality, and efficient fecal sludge management are perceived as highly important and are critical to achieving sustainable outcomes. The study also underscores the pivotal role of public relations in fostering community collaboration, building trust, and enhancing engagement among stakeholders, demonstrating that effective communication strategies can significantly influence community acceptance and participation in sanitation initiatives. These findings suggest that prioritizing community-driven approaches and strengthening communication efforts can enhance the impact of sanitation programs, ensuring they are well-received and actively supported. This research contributes a framework for integrating public relations with community engagement in sanitation planning, offering a model that can be adapted for sustainable development initiatives in other regions. Future research should explore similar frameworks in diverse settings to further validate and refine strategies that promote sustainable sanitation at scale. © 2025 The Author(s)

关键词： 2030 agenda Community engagement Importance-performance analysis Public relations strategic communication Sustainable sanitation

来源：评论

学校读者我要写书评

暂无评论

DIFFUSION AND PARTITIONING OF HEXACHLOROBIPHENYL IN SEDIMENTS

引用

environmental science & TECHNOLOGY 1985年第12期19卷 1169-1176页

作者： DITORO, DM JERIS, JS CIARCIA, D Environmental Engineering and Science Program Manhattan College Bronx New York 10471 United States

The diffusion coefficient and partition coefficient of hexachlorobiphenyl (HCBP) in a sediment are determined by using a dual radio-tag experiment that extended over 2 years. Essentially constant coefficients were observed. An independent measurement of the diffusion coefficient for a nonsorbing chemical (tritiated water) allows an estimate to be made of the interstitial water-sediment partition coefficient. The result is in close agreement with that predicted from hydrophobic sorption correlations based upon sediment organic carbon and HCBP octanol-water partition coefficient. It also corresponds to the low particle concentration limit of the partition coefficients found when batch equilibrations of dilute suspensions of the same sediment were used. © 1985, American Chemical Society. All rights reserved.

关键词： Organic compounds

来源：评论

学校读者我要写书评

暂无评论

Enhanced carbon tetrachloride degradation by hydroxylamine in ferrous ion activated calcium peroxide in the presence of formic acid

引用

Frontiers of environmental science & engineering 2020年第2期14卷 75-85页

作者： Wenchao Jiang Ping Tang Zhen Liu Huan He Qian Sui Shuguang Lyu State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China Environmental Engineering and Science Program Department of Chemical and Environmental EngineeringUniversity of CincinnatiCincinnatiOH 45221-0071USA

Hydroxyl radicals(HO*)show low reactivity with perchlorinated hydrocarbons,such as carbon tetrachloride(CT),in conventional Fenton reactions,therefore,the generation of reductive radicals has attracted increasing *** study investigated the enhancement of CT degradation by the synergistic effects of hydroxylamine(HA)and formic acid(FA)(initial[CT]=0.13 mmol/L)in a Fe(il)activated calcium peroxide(CP)fenton *** degradation increased from 56.6%to 99.9%with the addition of 0.78 mmol/L HA to the CP/Fe(II)/FA/CT process in a molar ratio o f 12/6/12/*** results also showed that the presence of HA enhanced the regeneration of Fe(II)from Fe(III),and the production of HO*increased one-fold when employing benzoic acid as the HO****,FA slightly improves the production of HO*.A study of the mechanism confirmed that the carbon dioxide radical(C02·),a strong reductant generated by the reaction between FA and HO*,was the dominant radical responsible for CT *** complete CT dechlorination was achieved in the *** presence of humic acid and chloride ion slightly decreased CT removal,while high doses of bicarbonate and high pH inhibited CT *** study helps us to better understand the synergistic roles of FA and HA for HO·and C02·^-generation and the removal of perchlorinated hydrocarbons in modified Fenton systems.

关键词： Calcium peroxide Hydroxylamine Modified Fenton Reactive oxygen species Perchlorinated hydrocarbon

来源：评论

学校读者我要写书评

暂无评论

Improving the Performance of Asphalt Mixtures with Highly Acidic Aggregates in Central Vietnam Using Modifier Based on Styrene-Butadiene-Styrene and Rosin Resin

引用

Journal of Materials in Civil engineering 2025年第7期37卷

作者： Nguyen, Lan Ngoc Lee, Hosin David Bui, Lam Tung Kim, Young-Ik Truong, Van Quyet Nguyen, May Huu Nguyen, Du Van Dept. of Construction Materials Faculty of Construction Engineering Univ. of Transport and Communications No. 03 Cau Giay Hanoi100000 Viet Nam Dept. of Civil and Environmental Engineering Iowa Technology Institute The Univ. of Iowa Iowa CityIA52242 United States Research Dept. Hansoo Natech Co. Ltd. 6-20 Yuseong-daero 1205beon-gil Yuseong-gu Daejeon34104 Korea Republic of Civil and Environmental Engineering Program Graduate School of Advanced Science and Engineering Hiroshima Univ. 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima739-8527 Japan Faculty of Civil Engineering Univ. of Transport and Communications Campus in Ho Chi Minh City Ho Chi Minh City700000 Viet Nam

In Central Vietnam, the aggregate typically originates from highly acidic rocks containing a significant amount of silicon dioxide (SiO2), leading to poor adhesion quality with virgin asphalt binder. Hence, the asphalt mixture production usually needs to utilize adhesion promoters. Based on the chemical compositions of the sample aggregate (up to 72.3% SiO2), research has been conducted to introduce an adhesive agent called rubber modified compound (RMC-160), which is composed of styrene-butadiene-styrene (SBS) with petroleum hydrocarbon resin, treated clay and mineral oil. This article presents the research findings regarding the adhesion effectiveness of RMC-160-modified asphalt binder to high acid-based aggregate through laboratory and field tests, along with the mixture performance under both short-term oven aging (STOA) and long-term oven aging (LTOA). The test results exhibited remarkable effects, whereby the asphalt binder modified with RMC-160 additive significantly increased the adhesion level from Grade 2 to Grade 4, and the asphalt mixtures containing RMC-160 had lower rutting and higher cracking tolerance (CTIndex) under both the STOA and LTOA conditions. © 2025 American Society of Civil Engineers.

关键词： Silicon oxides

来源：评论

学校读者我要写书评

暂无评论

MEASUREMENT AND MODELING OF WESTERN WASHINGTON PRECIPITATION CHEMISTRY

引用

WATER AIR AND SOIL POLLUTION 1985年第1期26卷 71-84页

作者： VONG, RJ LARSON, TV COVERT, DS WAGGONER, AP 1.Environmental Engineering and Science Program Department of Civil Engineering University of Washington WA Seattle 98195 USA

Precipitation was collected and chemically analyzed for a 1 yr period at four sites in western Washington. Spatial and seasonal variabilities in concentrations were identified with the highest concentrations nearest emission sources and in the summer. Multiple correlations among measured species revealed five groupings which were interpreted as the influences of seasalt, metals from a Cu smelter, an urban factor, soil, and acidic sulfate aerosol. A simple washout model predicted that the Cu smelter was the major contributor to a budget for rainwater sulfate. Measurement uncertainties were estimated for each analyte.

关键词： Acid precipitation Air pollution monitoring Copper smelter Emission Sulfate Washington (western)

来源：评论

学校读者我要写书评

暂无评论

Sources of dissolved organic matter in initial rainwater and its photochemical activity

引用

Water Cycle 2025年

作者： Yanting Xi Sihan Fan Yixin Liu Danni Cui Zhicheng Liao Ziwei Guo Chaochao Lai Haodong Zhang Zhe Zhang Fengxia Han Huan He Bin Huang Xuejun Pan Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 China Faculty of Civil Engineering and Mechanics Kunming University of Science and Technology Kunming 650500 China Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed Kunming 650032 China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering (DCEE) University of Cincinnati OH 45221 USA

The dissolved organic matter in initial rainwater (RDOM), including soil-dissolved organic matter (SDOM) and water-soluble organic matter (WSOM) in the atmosphere, can potentially mediate the migration and transformation of contaminants in natural water. However, researches on its sources, characteristics, and impact of environmental factors are limited. This study aims to investigate the main sources of RDOM and its properties influenced by environmental factors (such as light exposure and temperature variation). The results revealed that RDOM was mainly composed of SDOM. Temperature (–5 o C, –20 o C, temperature alternating, 40 o C, 50 o C, 60 o C) induced the variation of SDOM components, altering its fluorescence characteristics, aromatic components, and hydrophobicity. And high temperature showed a more pronounced effect on SDOM components. However, temperature fluctuations had different impacts on the SDOM-mediated photodegradation of bisphenol A (BPA). Among them, only SDOM that had undergone freeze-thaw cycles exhibited a promotive effect on the photodegradation of BPA, with the most significant effect observed at –20 o C. Illumination (ultraviolet light (UV) and natural light (NL)) consumed the chromophoric groups of SDOM, disrupted its intricate electron transfer structure, and reduced the production of •OH and Triplet-state dissolved organic matter ( 3 DOM*). So, illumination, especially UV, significantly weakened its mediating effect on the photodegradation of BPA. Based on these findings above, RDOM through temperature increase and illumination potentially leads to an inhibition of the degradation rate of organic pollutants. Conversely, RDOM may exhibit an enhanced ability following a freeze-thaw process. This study is crucial for elucidating the environmental effects of RDOM.

关键词： Dissolved organic matter Initial rainwater Photochemical activity Photo modification Temperature changes

来源：评论

学校读者我要写书评

暂无评论

Magnetically separable silica-chitosan hybrids for efficient phosphate adsorption in aqueous solution

引用

Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Nuryono, Nuryono Sukamto, Sukamto Kunarti, Eko Sri Krisbiantoro, Philip Anggo Wan Abdullah, Wan Nazwanie Kamiya, Yuichi Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Gadjah Mada Bulaksumur Yogyakarta 55281 Indonesia of Life Science Hokkaido University Kita 10 Nishi 8 Kita-ku Sapporo 060-0810 Japan International Graduate Program of Molecular Science and Technology National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Molecular Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan Department of Chemical Engineering College of Engineering National Taiwan University Taipei 10617 Taiwan School of Chemical Science Universiti Sains Malaysia Gelugor Penang 11800 Malaysia Faculty of Environmental Earth Science Hokkaido University Nishi 5 Kita 10 Kita-ku Sapporo 060-0810 Japan

In the present study, magnetic silica-chitosan hybrid (NMP@SiO2/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic ... 详细信息

In the present study, magnetic silica-chitosan hybrid (NMP@SiO₂/CPTMS/Chi) was synthesized via a convenient and green sol-gel technique under room temperature, and the material was used as a highly efficient magnetic adsorbent for the removal of phosphate ions in water. While the magnetic properties of NMP from iron enable the material to be quickly separated via magnetic separation, the abundant active sites from the chitosan made the hybrid exhibit high adsorption capacity for phosphate ions. At pH 6, the removal of phosphate ions followed the pseudo-second-order (PSO) kinetic model with the adsorption rate constant (k₂) of 5.9 × 10^-3 mg g⁻¹ min⁻¹ and obeyed the Langmuir isotherm model with a maximum adsorption capacity (q_max) of 15.06 mg g⁻¹, outperforming most of the previously reported adsorbents. Stability tests and derivative thermogravimetry (DTG) analysis demonstrated that NMP@SiO₂/CPTMS/Chi remained stable even under strongly acidic conditions and possessed high thermal stability, respectively. The synergistic combination of high adsorption capacity, acid stability, thermal stability, and facile magnetic separation renders NMP@SiO₂/CPTMS/Chi a promising adsorbent for wastewater treatment and environmental remediation. Overall, this innovative material represents a significant advancement in phosphate removal, offering a sustainable and effective solution to address the global challenge of water pollution and protect aquatic ecosystems. © 2025 The Authors

关键词： Adsorption Chitosan Magnetic material Phosphate Silica Sol-gel

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：