检索结果-内蒙古大学图书馆

2018 International Conference on Civil and Hydraulic engineering, IConCHE 2018

作者： Ren, Lei Wang, Manman Cai, Huayang Hu, Zhan Yang, Qingshu Hartnett, Michael School of Marine Engineering and Technology Sun Yat-sen University China Ocean Networks Canada Canada School of Marine Science Sun Yat-sen University China College of Engineering and Informatics National University of Ireland Galway Ireland

A good understanding of the water body movement in Strait of Georgia is of great importance and significance for a variety of economic and environmental applications. Circulation of surface currents in this region is influenced by a variety of factors such as tide, wind and river discharge. Hourly maps of surface currents are obtained through combining the radial currents from more than two stations. In order to explore performance of High Frequency (HF) CODAR radar system, currents observed by HF radars were compared with ADCP (Acoustic Doppler Current Profile) measurements. Results indicated that surface current data from HF radars generally had similar trend as the ADCP data. © Published under licence by IOP Publishing Ltd.

关键词： Doppler effect

来源：评论

学校读者我要写书评

暂无评论

Developing Univariate Neurodegeneration Biomarkers with low-rank and sparse subspace decomposition

arXiv

引用

arXiv 2020年

作者： Wang, Gang Dong, Qunxi Wu, Jianfeng Su, Yi Chen, Kewei Su, Qingtang Zhang, Xiaofeng Hao, Jinguang Yao, Tao Liu, Li Zhang, Caiming Caselli, Richard J. Reiman, Eric M. Wang, Yalin Ulsan Ship and Ocean College Ludong University Yantai China School of Computing Informatics and Decision Systems Engineering Arizona State University TempeAZ United States Banner Alzheimer’s Institute Banner Good Samaritan Pet Center PhoenixAZ United States School of Information and Electrical Engineering Ludong University Yantai China Shandong Province Key Lab of Digital Media Technology Shandong University of Finance and Economics Jinan China Department of Neurology Mayo Clinic Arizona ScottsdaleAZ United States

Cognitive decline due to Alzheimer’s disease (AD) is closely associated with brain structure alterations captured by structural magnetic resonance imaging (sMRI). It supports the validity to develop sMRI-based univariate neurodegeneration biomarkers (UNB). However, existing UNB work either fails to model large group variances or does not capture AD dementia (ADD) induced changes. We propose a novel low-rank and sparse subspace decomposition method capable of stably quantifying the morphological changes induced by ADD. Specifically, we propose a numerically efficient rank minimization mechanism to extract group common structure and impose regularization constraints to encode the original 3D morphometry connectivity. Further, we generate regions-of-interest (ROI) with group difference study between common subspaces of Aβ+ AD and Aβ− cognitively unimpaired (CU) groups. A univariate morphometry index (UMI) is constructed from these ROIs by summarizing individual morphological characteristics weighted by normalized difference between Aβ+ AD and Aβ− CU groups. We use hippocampal surface radial distance feature to compute the UMIs and validate our work in the Alzheimer’s Disease Neuroimaging Initiative (ADNI) cohort. With hippocampal UMIs, the estimated minimum sample sizes needed to detect a 25% reduction in the mean annual change with 80% power and two-tailed P = 0:05 are 116, 279 and 387 for the longitudinal Aβ+ AD, Aβ+ mild cognitive impairment (MCI) and Aβ+ CU groups, respectively. Additionally, for MCI patients, UMIs well correlate with hazard ratio of conversion to AD (4:3, 95% CI=2:3 – 8:2) within 18 months. Our experimental results outperform traditional hippocampal volume measures and suggest the application of UMI as a potential UNB. Copyright © 2020, The Authors. All rights reserved.

关键词： Biomarkers

来源：评论

学校读者我要写书评

暂无评论

Natural-based polymers for wastewater treatment

引用

AIP Conference Proceedings 2022年第1期2454卷

作者： Mohamad Faiz Mohd Amin Mohd Sukhairi Mat Rasat Muhammad Iqbal Ahmad Nur Shahidah Aftar Ali Khalida Muda Nur Syamimi Zaidi Shahrul Ismail Mohd Faidz Mohamad Shahimin Mohamad Asyraf Mohd Amin Mohammed Abdus Salam 1Faculty of Earth Science UMK Jeli Campus Jeli Kelantan Malaysia 2Faculty of Bioengineering and Technology UMK Jeli Campus Jeli Kelantan Malaysia 3Department of Water and Environmental Engineering School of Civil Engineering Universiti Teknologi Malaysia Johor Malaysia 4Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu Terengganu Malaysia 5Faculty of Environmental Technology (FTK) Universiti Malaysia Perlis Kampus Alam UniMEP Pauh Putra Perlis Malaysia 6Verdastro Snd Bhd Kawasan Perindustrian Gebeng Kuantan Malaysia 7Department of Environmental Science and Disaster Management Faculty of Science Noakhali Science and Technology University Noakhali Bangladesh

Natural and synthetic polymers have been long used in wastewater treatment. In this study, two positive charge polymers (natural and synthetic) were selected. These polymers were than tested for its ability to treat the wastewater with polymer dosages ranging from 1-20 mg/L. Both synthetic and natural have almost similar performance in turbidity removal. The highest removal rate of 90% was obtained at a dose of 20 mg/L. The removal of humic acid in demineralized water and wastewater was compared. Humic acid removal at 70% was reached in demineralized water, and 30% in wastewater. The removal of COD and phosphate is also reported.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Flammability and Mechanical Properties of Arenga Pinnata Fibre/PET Reinforced Epoxy for Fire Retardant Composites

引用

IOP Conference Series: Materials Science and engineering 2020年第1期864卷

作者： M. J. Suriani C.M. Ruzaidi D.S. Nair Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Terengganu Malaysia Center of Excellence Geopolymer & Green Technology (CEGeoGTech) School of Materials Engineering Universiti Malaysia Perlis (UniMAP) 02600 Jalan Kangar Perlis

The aim of this paper is to study the effect of magnesium hydroxide burning rate, mechanical properties and surface morphology analysis of Arenga pinnata fibre hybrid with polyester yarn (APF/PET) reinforced epoxy composite with the addition of magnesium hydroxide as flame retardant. The composites were prepared with different amount of fibres (i.e. 0%, 20%, 35% and 50% by weight percent) and two constant material of 5% which are the magnesium hydroxide and the polyester yarn with epoxy resin as the matrix. With the incorporation of the flame retardant the horizontal burning rate of APF/PET reinforced epoxy decreased with the amount of 35% APF. The fibre loading increased to 50% as the mechanical properties of the hybrid composite decreased which due to the lack of interfacial bonding between the fibres and matrix. Surface morphology studies through scanning electron microscopy showed the similar distribution of Arenga pinnata fibres and matrix with less adhesion which reduce the mechanical properties of the hybrid composites.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Design, Synthesis and Evaluation the Bioactivites of Novel Quinazoline Derivatives as Immune Checkpoint Inhibitors

SSRN

引用

SSRN 2023年

作者： Vo, Tam Thuy Lu Hoang, Van-Hai Dung, Phan Thi Phuong Nguyen, Tiep K. Ngo, Son Tung Nguyen, Yen Thi Kim Nguyen, Thanh Xuan Hien, Tran Thi Thu Hoang, Tham H. Thi Do, Yen Seo, Ji Hae Tran, Phuong-Thao Department of Biochemistry Keimyung University School of Medicine Daegu42601 Korea Republic of Faculty of Pharmacy and Nursing Tay Do University 68 Lo Hau Thanh My Can Tho900000 Viet Nam Faculty of Pharmacy PHENIKAA University Hanoi12116 Viet Nam PHENIKAA University Yen Nghia Hadong Hanoi12116 Viet Nam Hanoi University of Pharmacy 13-15 Le Thanh Tong Hanoi100000 Viet Nam Laboratory of Biophysics Institute for Advanced Study in Technology Ton Duc Thang University Ho Chi Minh City72915 Viet Nam Faculty of Pharmacy Ton Duc Thang University Ho Chi Minh City72915 Viet Nam Research Institute of Pharmaceutical Sciences College of Pharmacy Seoul National University 1 Gwanak-ro Gwanak-gu Seoul08826 Korea Republic of Department of Neurosurgery Viet-Duc University Hospital Hanoi100000 Viet Nam Vietnam University of Traditional Medicine 2 Tran Phu Ha Dong Hanoi100000 Viet Nam Center for Biomedical Informatics Vingroup Big Data Institute 458 Minh Khai Street Hai Ba Trung Hanoi100000 Viet Nam College of Engineering and Computer Science VinUniversity Vinhomes Ocean Park Gia Lam Hanoi100000 Viet Nam

Indoleamine 2,3-dioxygenase (IDO1) has emerged as a critical immune checkpoint with profound implications in numerous types of cancer. Dysregulation of IDO1 has prompted considerable interest in IDO1 as a target in immuno-oncology therapy. Herein, we report novel quinazoline derivatives specifically designed to target IDO1. Based on the active site of apo-IDO1 and a clinical trial cadidate, linrodostat, we designed novel, selectively targeting cancer cell derivatives with micromolar IC50 values. Via docking study, we confirm the robust binding affinity of these quinazoline compounds to apo-IDO, firmly establishing their potential as IDO1 targeted agents. We also uncover that these compounds suppress immuno-oncology target PD-L1 in addition to IDO1. Intriguingly, compound V-d emerges as a stand out, triggering cell death through caspase-dependent and caspase-independent manners. More importantly, V-d presents it ability to hinder tumor sphere formation and re-sensitized cisplatin-resistant A2780 cells to cisplatin treatment. These findings suggest that compound V-d emerges as a promising lead candidate for the future development of immuno anticancer agents. Our study offers exciting prospects for enhanced cancer therapy. © 2023, The Authors. All rights reserved.

关键词： Oncology

来源：评论

学校读者我要写书评

暂无评论

Potential of oil palm trunk starch as flocculant for contaminant of emerging compound removal

引用

IOP Conference Series: Earth and Environmental Science 2021年第1期842卷

作者： M F Mohd Amin M S Mat Rasat M I Ahmad N S Aftar Ali K Muda N S Zaidi S Ismail M F Mohamad Shahimin M A Mohd Amin M A Salam Faculty of Earth Science UMK Jeli Campus Jeli Kelantan Malaysia Faculty of Bioengineering and Technology UMK Jeli Campus Jeli Kelantan Malaysia Department of Water and Environmental Engineering School of Civil Engineering Universiti Teknologi Malaysia Johor Malaysia Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu Terengganu Malaysia Faculty of Environmental Technology (FTK) Universiti Malaysia Perlis Kampus Alam UniMEP Pauh Putra Perlis Malaysia Verdastro Sdn Bhd Kawasan Perindustrian Gebeng Kuantan Malaysia Department of Environmental Science and Disaster Management Noakhali Science and Technology University Noakhali Bangladesh

In this preliminary study, a natural flocculant is developed from an oil palm trunk. The flocculant further tested for its ability in turbidity and COD removal with additional of atrazine in wastewater and demineralised water matrix. At the optimum dosage of 20mg/L, the developed cationic OPT starch able to remove around 95% turbidity and 85% COD. In addition, the cationic OPT starch also show the ability to remove spiked atrazine from both water matrixes to the maximum range of 55-85%. In conclusion, the developed oil-palm based flocculant show great potential for real-world application with added cost-effective benefits.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Behaviour of Geomagnetic storm, horizontal geomagnetic field and solar wind parameters during solar flare and CMEs event.

引用

Journal of Physics: Conference Series 2021年第1期1768卷

作者： S N A Syed Zafar S N Hazmin M H Jusoh A N Dagang M A M Adzni R Umar East Coast Enviromental Research Institute Universiti Sultan Zainal Abidin 21300 Kuala Nerus Terengganu Malaysia. School of Fundamental Science Universiti Malaysia Terengganu 21300 Kuala Terengganu Terengganu Malaysia. Faculty of Electrical Engineering Universiti Teknologi Mara Shah Alam Selangor Malaysia Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia

Space weather is driven by solar activities by pulling out the variety of phenomenon such as solar flare and coronal mass ejection (CMEs). It been discovered the CMEs and solar flares have causes disturbance at near-Earth space. This paper is to examined the behaviour of geomagnetic storm, horizontal geomagnetic field and several solar wind parameters during solar flare and CMEs event at minimum of solar cycle of 24. Observational result found that association of strongest solar flare and CMEs have declined the geomagnetic storm until -150nt at 8th September 2017. Following to this, the H component reading also slightly decreased at three magnetometer location respectively. Solar flare and CMEs released the energetic particles that could disturbed the radio communications at the Earth and electronic equipment. Therefore, it was required to study and understanding the solar flare and CMEs event.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Development of mangrove zonation pattern map using object based image analysis (OBIA) for dense mangrove cover 39

Development of mangrove zonation pattern map using object ba...

引用

39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018

作者： Maimunah Ishak, Daeng Siti Abd Wahab, Ahmad Khairi Che Hasan, Rozaimi Hidayat Jamal, Mohamad Center for Coastal and Ocean Engineering Universiti Teknologi Malaysia Jalan Sultan Yahya Petra Kuala Lumpur54100 Malaysia School of Civil Engineering Faculty of Engineering Universiti Teknologi Malaysia Johor Bahru Johor81310 Malaysia Razak Faculty of Technology and Informatics Universiti Teknologi Malaysia Jalan Sultan Yahya Petra Kuala Lumpur54100 Malaysia

Tolerability to the specific ranges of environmental parameters form a limiting factor to the mangrove species distribution. This characteristic is translated into the formation of mangrove zones in a mangrove forest. Mapping the mangrove zonation pattern is a challenging task especially when the mangrove cover is thick and dense. The aim of this study is to identify and map the mangrove zonation pattern at Pulau Kukup, Johor using a high resolution WorldView-2 satellite data and Object Based Image Analysis (OBIA) system, SPRING 5.2. Mangrove extent was extracted from multispectral and panchromatic images using region growing segmentation method. Several thresholds were used to identify the best-fit segmentation parameters. Eleven plots of 100m transects were established in the study area to sample the representative mangrove trees. The type of mangrove species, tree height, Diameter at the Breast Height (DBH), elevation, and coordinate location were collected during the field survey based on Point-Centre-Quadrate Method (PCQM). The general characteristics of mangrove tree were investigated and sampled from 186 mangrove trees. Rhizophora apiculata and *** were found dominating the outer part of the mangrove island facing the seaward area. From the field analyses, the relative density of Rhizophora apiculata and *** are 41.9% and 16.7% respectively. The mangrove coordinate locations were then recorded and used as a reference point for classification process using the Bhatacharyya distance. Three multispectral band combinations were tested for classification. Classified map with the highest accuracy level (94.05%) was constructed using the band combination 7 (near infrared-1), 6 (red-edge) and 5 (red) for the study area. From the study, it was found that the application of OBIA technique in mangrove mapping had successfully classified the dense mangrove cover. It concluded that the OBIA technique offers an alternative way to map the dense mangrove dist

关键词： Mapping

来源：评论

学校读者我要写书评

暂无评论

Sea turtle nest conservation-exploitation prey-predator model: Case study of Terengganu

引用

AIP Conference Proceedings 2021年第1期2355卷 040001页

作者： Muhammad Afiq Ahmad Khairuddin Ummu Atiqah Mohd Roslan Mohd Hafiz Mohd Mohd Uzair Rusli Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Management Science Research Group Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia School of Mathematical Sciences Universiti Sains Malaysia 11800 Penang Malaysia Sea Turtle Research Unit (SEATRU) Institute of Oceanography and Environment Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia

Research on sea turtle conservation effort which is often linked with exploitation cases has been provided by many literatures, especially at the nesting stage which significantly effects the birth rate of the species. Moreover, there are numerous activities that have been done which contributes to conservation or exploitation of the sea turtle eggs from the nest such as sanctuary beaches, awareness programs, tendering system or even illegal trading issues exist in Terengganu. Most of previous studies focused only on sea turtle biological point of view. However, the mathematical model focusing both efforts are not sufficient, and if there are any, will not portray the direct impact of conservational nor exploitation effect of the sea turtle nests in precise manner. Hence, in this paper, we intend to formulate model from classical Lotka-Volterra 2-species system with logistic growth and population density, we will find its stability attributes and proceed with experimenting different value of conservation effort and exploitation activity parameters respectively. The finding results from this paper may contribute significantly to the sea turtle population management, especially in Terengganu.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Corrosion Inhibition and Antifouling Performance of Epoxy Coating Functionalized with PEDOT: PSS-Cerium Doped Zinc Oxide Hybrid Composites

引用

IOP Conference Series: Materials Science and engineering 2020年第1期864卷

作者： W.R.W. Abdullah N.F. Ibrahim S.N.S.M. Arifin C.M. Ruzaidi M.G.M. Sabri Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Center of Excellence Geopolymer & Green Technology (CEGeoGTech) School of Materials Engineering Universiti Malaysia Perlis (UniMAP) 02600 Jalan Kangar Perlis Faculty of Science and Marine Environment Universiti Malaysia Terengganu 21030 Kuala Nerus Terengganu Malaysia Institute of Tropical Biodiversity and Sustainable Development Universiti Malaysia Terengganu 21030 Kuala NerusTerengganu Malaysia

Steel corrosion and biofouling have adverse impacts on various high-end engineering applications including, in biomedical and maritime industries. Smart functional polymer coatings have been developed to simultaneously control corrosion and prevent biofouling problems on steels. In this study, translucent epoxy coatings loaded with 1, 3, and 5 wt% of functional hybrid composite (HC) microparticles were formulated. The HC particles contained cerium doped ZnO encapsulated in conductive poly(3,4-ethylene dioxythiophene) polystyrene sulfonate (PEDOT: PSS) polymer at mixing ratio of 3:1. The effects of HC composition towards the corrosion inhibition and antifouling properties of the coating were evaluated. The microstructure and composition analyses were performed by using SEM and EDX techniques. The anticorrosion performance of the coating films deposited on stainless steel (SS 316 L) substrates was evaluated by using the Potentiodynamic Polarization (PP) technique. The antifouling characteristics of the coatings were investigated by performing the antimicrobial susceptibility test and a series of photodegradation test in medium containing ~108 CFU/ml of bacteria under UV light in 180 minutes. The findings revealed that the presence of PEDOT:PSS-Ce doped ZnO HC increased the barrier properties of the epoxy matrix on SS 316 L against corrosion. The corrosion inhibition properties increased with increasing HC composition. The formulated coatings also exhibited antifouling effects against bacteria. The Gram positive-S. aureus exhibited susceptibility against the coating whereas the Gram negative – S. aureus showed resistant. The coatings demonstrated photocatalytic properties under UV light irradiation and capable of inactivating <99% of bacteria in less than 180 min. The epoxy coating functionalized with 5wt% HC exhibited the highest corrosion inhibition performance (corrosion rate of 0.0001 mm/year) and excellent antifouling effects against selected bacteria.

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：