检索结果-内蒙古大学图书馆

Characterization and performances of hydrophobic polymer membrane modified with dragon’s blood resin

AIP Conference Proceedings 2023年第1期2613卷

作者： Aulia Chintia Ambarita Sri Mulyati Nasrul Arahman Muhammad Roil Bilad 1Doctoral School of Engineering Science School of Engineering Post Graduate Program Universitas Syiah Kuala Banda Aceh 23111 Indonesia 2Department of Chemical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh 23111 Indonesia 3Department of Chemical and Process Engineering Faculty of Integrated Technologies Universiti Brunei Darussalam Jalan Tungku Link-Gadong BE1401 Brunei

Hydrophobic membranes have limitations, which are the low permeation rate and susceptible to fouling, therefore membrane modifications are generally required. In this paper, hydrophobic polymer membrane modification has been studied by mixing dragon's blood resin (DBR) as bio additive. Two types of polymers were used, they were polyethersulfon (M-3 PES) and polyvinylidene Two types of polymers were used, they were polyethersulfon (M-3 PES) and polyvinylidene fluoride (M-3 PVDF) with a concentration of 14.5% polymer and 3% DBR. The results showed that M-3 PES had greater porosity, water uptake, pore size, and clean water flux than M3-PVDF. However, the antifouling performance of M-3 PVDF membrane tends to be better than M-3 PES, as well as its rejection. Both membranes tend to be stable even after repeated use.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Polyvinyl chloride microplastics and drought co-exposure alter rice growth by affecting metabolomics and proteomics

引用

Science of the Total Environment 2024年 955卷 177002页

作者： Khan, Kiran Yasmin Ali, Barkat Ghani, Hafiz Usman Cui, Xiaoqiang Luo, Xiaohan Ali, Zeshan Ahmed, Waqar Tan, Jinglu Lysenko, Vladimir Guo, Ya Key Laboratory of Advanced Process Control for Light Industry Ministry of Education Jiangnan University Wuxi214122 China Food Science Research Institute National Agricultural Research Centre Islamabad44000 Pakistan Hebei Medical University Shijiazhuang050000 China School of Environmental Science and Engineering/Tianjin Key Lab of Biomass Waste Utilization Tianjin University Tianjin300072 China Ecotoxicology Research Program Institute of Plant and Environmental Protection National Agriculture Research Center Islamabad44000 Pakistan Department of Biomedical Biological & Chemical Engineering University of Missouri ColumbiaMO65211 United States Southern Federal University Academy of Biology and Biotechnology Rostov-on-Don344041 Russia International Joint Research Center for Intelligent Optical Sensing and Applications at Jiangnan University Wuxi214122 China

Microplastics, interacting with drought stress, have become threat to crops by altering soil environment. Currently, the effect of combined microplastic and drought stress on crop growth remain poorly understood. In this work, the mechanism of multi-stress responses was investigated under the exposure of polvinylchloride microplastic (PV) and drought (D) individually and in combination (DPV) on rice varieties Hanyou73 and Q280 through proteomics and metabolomic analysis. All treatments negatively affect chlorophyll content, antioxidant enzyme activities, rice grain composition, metabolome and proteomic profiling of both rice varieties. Full rice grain yield was decreased under all treatments except PV treatment in which it was increased in both rice varieties. DPV treatment shows the lowest grain yield and more adverse effects on metabolome by affecting glycerophospholipid metabolism, tryptophan metabolism and alanine, aspartate and glutamate metabolism. Soluble sugar contents were decreased in H73 but in Q280 increased by 159 % under DPV and 123 % in PV treatment, compared to their control group. The results from metabolomics illustrate that glycerophospholipid metabolism is commonly altered in both rice types under all treatments. PV and drought alone and in combination induce extensive alterations in proteomics of rice leaves especially impacting proteins related to binding, translation and photosynthetic process. The results reveal that PV and DPV treatments highly distort the abundance of metabolites and proteins in both rice types, demonstrating that microplastic toxicity effects on rice plants become more severe when combined with drought stress. © 2024 Elsevier B.V.

关键词： Drought Metabolite Polyvinyl chloride microplastic Protein Rice

来源：评论

学校读者我要写书评

暂无评论

Improvement of heterologous protein productivity using recombinantYarrowia lipolyticaand cyclic fed‐batch process strategy

引用

Biotechnology and Bioengineering 2000年第3期59卷

作者： Ching Chuan Chang Dewey D. Y. Ryu Cheon Seok Park Jeong‐Yoon Kim Process Development Division Development Center for Biotechnology 81 Chang‐Hsing Street Taipei Taiwan Republic of China Biochemical Engineering Program Department of Chemical Engineering and Material Science University of California Davis California 95616 Department of Microbiology Chungnam National University Taejon Korea

A cyclic fed‐batch bioprocess is designed and a significant improvement of rice α‐amylase productivity of recombinant Yarrowia lipolytica is illustrated. A bioprocess control strategy developed and reported here entails use of a genetically stable recombinant cloned for heterologous protein, use of optimized media for cell growth and enzyme production phases, and process control strategy enabling high cell‐density culture and high α‐amylase productivity. This process control can be achieved through maintaining a constant optimal specific cell growth rate at a predetermined value (i.e., 0.1 h −1 ), controlling medium feed rate commensurate with the cell growth rate, and maintaining a high cell‐density culture (i.e., 60–70 g/L) for high productivity of cloned heterologous protein. The volumetric enzyme productivity (1,960 units/L · h) achieved from the cyclic fed‐batch process was about 3‐fold higher than that of the fed‐batch culture process (630 units/L · h). © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 59:379–385, 1998.

关键词： recombinant Yarrowia lipolytica heterologous protein expression improvement of rice α‐amylase productivity cyclic fed‐batch culture bioprocess control strategy

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “A comprehensive review on atmospheric water harvesting technologies: From thermodynamic concepts to mechanism and process development”

引用

Journal of Water process engineering 2024年 59卷

作者： Hasan Nikkhah Wan Mujiburahman Bin Wan Azmi Ali Nikkhah Amir Mohammad Najafi Mohsen Mesbahi Babaei Chua Siew Fen Alireza Nouri Abdul Wahab Mohammad Ang Wei Lun Ng Law Yong Ebrahim Mahmoudi Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi 43600 Malaysia Department of Chemical and Biomolecular Engineering University of Connecticut Storrs USA Department of Mechanical and Aerospace Engineering University at Buffalo Buffalo USA Department of Chemical Engineering Sharif university of Technology Tehran Iran School of Chemical Petroleum and Gas Engineering Iran University of Science and Technology (IUST) Tehran Iran Chemical and Water Desalination Engineering Program College of Engineering University of Sharjah Sharjah 27272 United Arab Emirates Lee Kong Chian Faculty of Engineering and Science Universiti Tunku Abdul Rahman Jalan Sungai Long Bandar Sungai Long Kajang Selangor Malaysia

来源：评论

学校读者我要写书评

暂无评论

Recent advancements in the targeted delivery of Gemcitabine: Harnessing nanomedicine for enhanced cancer therapy

引用

OpenNano 2023年 13卷

作者： Pourmadadi, Mehrab Aslani, Ali Hassan, Dilawar Sani, Ayesha Rahdar, Abbas I． Medina, Dora Abdouss, Majid Romanholo Ferreira, Luiz Fernando Department of Biotechnology School of Chemical Engineering College of Engineering University of Tehran Tehran Iran Department of Chemistry Amirkabir University of Technology Tehran Iran Tecnologico de Monterrey School of Engineering and Sciences Atizapan de Zaragoza Estado de Mexico 52926 Mexico Department of Physics Faculty of Sciences University of Zabol Zabol 538-98615 Iran Tecnologico de Monterrey Institute of Advanced Materials for Sustainable Manufacturing Nuevo Leon Monterrey 64849 Mexico Graduate Program in Process Engineering Tiradentes University (UNIT) Av. Murilo Dantas 300 Farolândia Aracaju-Sergipe 49032-490 Brazil Institute of Technology and Research (ITP) Tiradentes University (UNIT) Av. Murilo Dantas 300 Farolândia Aracaju-Sergipe 49032-490 Brazil

Gemcitabine (GEM) is a chemotherapeutic drug widely used for treating pancreatic cancer and other cancers. Despite its efficacy, GEM is associated with adverse side effects and tumor resistance, hampering its therapeutic outcomes. To address these challenges, innovative strategies have emerged to enhance GEM delivery. This comprehensive review explores various distribution systems, including polymer-based platforms, liposomes, and inorganic nanoparticles, highlighting their unique characteristics for improving GEM efficacy in cancer treatment. Additionally, we discuss the promising approach of codelivery with genes and present several methods for augmenting GEM's chemotherapeutic properties. Our findings shed light on novel insights and provide recommendations for overcoming the limitations associated with GEM, guiding researchers and clinicians toward more effective cancer therapies. © 2023 The Authors

关键词： Co-delivery Inorganic nanoparticles Lipid-based nanoparticles Polymeric nanoparticles

来源：评论

学校读者我要写书评

暂无评论

Computer aided environmental analysis of a large-scale production of chitosan micro-beads modified with thiourea and magnetite

引用

IOP Conference Series: Materials Science and engineering 2019年第1期519卷

作者： F Bertel G Cogollo S Meramo-Hurtado A González-Delgado Nanomaterials and Computer Aided Process Engineering Research Group (NIPAC) Chemical Engineering Department Faculty of Engineering University of Cartagena Av. Del Consulado Calle 30 No. 48-152 Cartagena Colombia. Engineering PhD. Program University of Cartagena Av. Del Consulado Calle 30 No. 48-152 Cartagena Colombia.

In this work, environmental assessment of a large-scale production of chitosan micro-beads modified with thiourea and magnetite was performed using Waste Reduction Algorithm (WAR). This methodology evaluates eight impact categories, four toxicological and four atmospherics. Initially, the simulation of production process of micro-beads was realized. Then, WAR GUI software, which is based on WAR algorithm, was employed to quantify potential environmental impacts (PEI) generation and output rate for this process under 4 different cases. The synthesis of micro-beads was analysed using computer-aided process engineering, this is related to the fact that there is no bibliography reported for the industrial scale-up, simulation and environmental evaluation of this type of process Results shows that photochemical oxidation potential is the evaluated category which emits the biggest output rate of PEI, contributing in all cases with more than 49% of the total rate. In general terms, the process has a negative generated PEI which means that the process has a convenient environmental performance. This leads to the conclusion that the process is environmentally beneficial because it consumes environmental impacts.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The growth of local microalgae in synthetic and agricultural wastewater for aquaculture feed application

引用

AIP Conference Proceedings 2023年第1期2682卷

作者： Jannatulhawa Jasni Nazlina Haiza Mohd Yasin Mohd Sobri Takriff 1Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia. 2Department of Biological Sciences and Biotechnology Faculty of Science and Technology Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia 3Chemical and Water Desalination Program College of Engineering University of Sharjah United Arab Emirates.

Microalgae's high protein content makes them an attractive feedstock for aquaculture feed applications. However, an economical and effective mass cultivation is essential for greater feasibility in microalgal-based aquaculture applications. Therefore, in this research the utilization of wastewater for microalgal cultivation using two local species of Chlamydomonas sp. UKM6 and Scenedesmus sp. UKM9 were discussed with particular attention to the feasibility of utilizing POME as microalgal growth medium for the production of bulk biomass. The growth rate for Chlamydomonas sp. UKM6 and Scenedesmus sp. UKM9 grown in Bold's Basal Media (BBM) were found higher (0.2829, 0.4045 day-1) than in POME (0.160, 0.255 day-1). Their biomass were then applied as zooplankton enrichment feed for Daphnia magna and then subsequently for feeding fish larvae. The result shown that enriched Daphnia using Scenedesmus sp. UKM9 microalgae promotes better growth, survival and fecundity of fish larvae (P>0.05) than the control diet using dried yeast. Thus, this research indicating the feasibility of culturing microalgae using wastewater as a means to reduce the cost of production is possible and therefore can be applied in aquaculture feed industries.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Ultrasound-assisted dilute acid medium of oil palm residues toward morphological and thermal properties

引用

AIP Conference Proceedings 2024年第1期3132卷

作者： Sylvia Madusari Yazid Bindar Tirto Prakoso Noor Ida Amalina Ahamad Nordin Saidatul Shima Jamari Faculty of Chemical and Process Engineering Technology College of Engineering Technology University Malaysia Pahang 26300 Gambang Kuantan Pahang Malaysia Production Technology of Plantation Crop Program Politeknik Kelapa Sawit Citra Widya Edukasi 17520 West Java Indonesia Department of Chemical Engineering Institut Teknologi Bandung 40132 West Java Indonesia Department of Bioenergy and Chemurgy Engineering Institut Teknologi Bandung Kampus Jatinangor 45363 West Java Indonesia

Biomass is widely recognized as an essential source of renewable energy. The most abundant organic resources in the plantation field are oil palm frond (OPF) and trunk (OPT). These lignocellulose biomaterials are rich in renewable biobased products. The recalcitrance of oil palm biomass directly linked with the cellulose, hemicellulose, and lignin structure remains a challenge. The pretreatment process is still a consideration because the recalcitrant lignocellulose structure prevents depolymerization from releasing the appropriate substrate to a new approach. This study is aimed to characterize the oil palm frond and trunk pretreated by a combination of ultrasonication with a dilute sulfuric acid medium. This study considers the morphological and thermal characteristics intending to explore their future potential application. The procedure in this research was that the raw OPF and OPT were weighed and transferred into a 1000 ml beaker containing a low acid concentration of H2SO4 in the ratio of 1: 25. The deionized water (DW) was used as a control. The mixture was stirred and incubated in an ultrasonic bath for 30 minutes at an ultrasonic frequency of 40 kHz and an ambient temperature of 80°C. The operating time and power were set at the start of the pretreatment. The ultrasonicated materials were characterized by Scanning Electron Microscope (SEM) and Thermogravimetric Analysis (TG-STA). The results demonstrated that the yield percentages of OPT's ultrasound-assisted low sulfuric acid (ULSA) are about 10% higher than the deionized water pretreatment. SEM results showed that the ULSA pretreatment of OPF and OPT revealed a significant disruption of their surface structures. The DTG analysis revealed that the maximum temperature degradation of ULSA pretreatment is shifted to a higher temperature than the raw material, which is 273.43℃ for OPF and 265.15 for OPT to 314.43℃ for ULSA-OPF (SOPF) and 318.88℃ ULSA-OPT (SOPT). The thermogravimetric data indicates that the U

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study of passenger vessels design in Berau Regency, East Kalimantan, Indonesia for public transportation

引用

IOP Conference Series: Earth and Environmental Science 2020年第1期557卷

作者： S D Utami H Haripamudya S B Kurniawan Department of Marine Engineering Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Sukolilo Surabaya 60111 Study Program of Ship Design and Construction Department of Shipbuilding Politeknik Perkapalan Negeri Surabaya Sukolilo Surabaya 60111 Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia

Globalization had increased global economic activity, including production, trade and distribution activities in developing countries, especially in Asia. The increasing of trade traffic and cargo transportation in archipelago country like Indonesia, requires the utilization of sea lanes. This study was aimed to present the suitability of ship design to be passengers transportation in Berau Regency, East Kalimantan, Indonesia. The proposed design should be in accordance with the conditions of Berau which has 6 districts crossed by the river which still lack of transportation facilities. This research proposed an optimal ship design that can be used as a reference for renewable ships in Berau waters. This study produced a watershed design analysis concept as part of the reference and boundary dimensions of the ship. The obtained main size of the ship using linear regression method was total length of 12.5 meters, 3 meters wide, 1.5 meters high, and 0.6 meters full of water. Resistance analysis using the Savitsky method showed the engine capacity of 2x150 pk with a service speed of 25 knots. Maximum speed of 30 knots with a distance of 57.32 mill can be reached with 2 hours service speed and 1 hour 40 minutes at a maximum speed of 30 knots with the resistance value 12.8 kN. The total estimated budget for the production of this ship was Rp 1.773.656.800. This design may be adopted as an integrated reference for the procurement of transportation facilities for passenger ships, especially in the Berau river.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Valorising fermentation effluent rich in short-chain fatty acids and sugars for biohydrogen via photofermentation by Rhodobacter sphaeroides KKU-PS1

引用

IOP Conference Series: Earth and Environmental Science 2019年第1期268卷

作者： Muhammad Alif Fitri Hanipa Peer Mohamed Abdul Jamaliah Md Jahim Mohd Sobri Takriff Alissara Reungsang Research Centre for Sustainable Process Technology (CESPRO) Faculty of Engineering and Built Environment (FKAB) UKM Bangi 43600 Selangor Malaysia Chemical Engineering Program Faculty of Engineering and Built Environment (FKAB) Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor Malaysia Department of Biotechnology Faculty of Technology KhonKaen University Khon Kaen 40002 Thailand

Growing fermentative chemical production will increase effluents from industrial fermentations containing short-chain fatty acids and residual sugars, which are exploitable for biohydrogen through photofermentation. Previous studies have concentrated on single substrates and photofermentation study using fermentation effluent from bio-succinate production containing residual sugars and short-chain organic acids has yet to be reported to the best of authors' knowledge. Rhodobacter sphaeroides KKU-PS1 grown on succinate was used for hydrogen production from medium containing mixture of substrates mimicking final effluent from bio-based succinate production. Prior to that, hydrogen producibility test with succinate-only medium was carried out. Photofermentation from succinate by this strain yielded 1217 ml H2/l of maximum cumulative hydrogen with maximum hydrogen rate of 6.7 ml H2/l/h, comparable to malate which was previously reported as best single substrate for the strain. Hydrogen production profiles using mixed substrates was well-fitted by modified Gompertz model with maximum cumulative hydrogen and maximum hydrogen production rate of 1005 ml H2/l and 4.1 ml H2/l/h, respectively. Only glucose, xylose and succinate followed modified Gompertz model for substrate consumption. Instantaneous succinate consumption compared to extended lag time of 100h for consumption of both sugars indicated higher affinity towards short-chain fatty acid utilization during initial growth phase. Xylose showed highest overall substrate consumption signifying its importance for hydrogen generation, which continued after stationary growth phase started reaching a total of 91.9% consumption. Significant remaining substrate levels other than xylose suggested that the process was not inhibited by limited substrates. The study highlighted potential of fermentation effluents containing mixed substrates for biohydrogen, with further optimization needed.

关键词：

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：