检索结果-内蒙古大学图书馆

Thermomagnetic Anomalies by Magnonic Criticality in Ultracold Atomic Transport

Physical Review Letters 2024年第16期133卷 163402页

作者： Yuta Sekino Yuya Ominato Hiroyuki Tajima Shun Uchino Mamoru Matsuo Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) Nonequilibrium Quantum Statistical Mechanics RIKEN Hakubi Research Team RIKEN Cluster for Pioneering Research (CPR) Wako Saitama 351-0198 Japan RIKEN Cluster for Pioneering Research (CPR) Astrophysical Big Bang Laboratory (ABBL) Wako Saitama 351-0198 Japan Waseda Institute for Advanced Study Department of Physics School of Science Faculty of Science and Engineering CAS Center for Excellence in Topological Quantum Computation Advanced Science Research Center Wako Saitama 351-0198 Japan

We investigate thermomagnetic transport in an ultracold atomic system with two ferromagnets linked via a magnetic quantum point contact. Using the nonequilibrium Green’s function approach, we show a divergence in spin conductance and a slowing down of spin relaxation that manifest in the weak effective-Zeeman-field limit. These anomalous spin dynamics result from the magnonic critical point at which magnons become gapless due to spontaneous magnetization. Our findings unveil untapped dynamics in ultracold atomic systems, opening new avenues in thermomagnetism.

关键词： Cold gases in optical lattices Magnons Magnetic insulators Magnetic tunnel junctions Nonequilibrium Green's function Spin wave theory

来源：评论

学校读者我要写书评

暂无评论

Metal ratio and bimetal nanoarchitectonics of ammonia-based fluoride complex induced nickel hydroxide and manganese oxide composites as active materials of an energy storage device

引用

Journal of Energy Storage 2024年 80卷

作者： Hsu, Chuan-Chih Yu, You Zher Wu, Chung-Hsien Lee, Pin-Yan Chen, Hung-Ming Husain, Sadang Kongvarhodom, Chutima Hsiao, Yu-Cheng Lin, Lu-Yin Division of Cardiovascular Surgery Department of Surgery School of Medicine College of Medicine Taipei Medical University Taiwan Division of Cardiovascular Surgery Department of Surgery Taipei Medical University Hospital Taiwan Department of Chemical Engineering and Biotechnology National Taipei University of Technology Taipei Taiwan Gingen Technology Co. LTD. Rm. 7 10F. No.189 Sec. 2 Keelung Rd. Xinyi Dist. Taipei11054 Taiwan Department of Physics Faculty of Mathematics and Natural Science Lambung Mangkurat University Banjarmasin70124 Indonesia Department of Chemical Engineering King Mongkut's University of Technology Thonburi 126 Pracha-u-thit Toong-kru Bangkok10140 Thailand Department of Chemical Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Cell Physiology and Molecular Image Research Center Wan Fang Hospital Taipei Medical University Taipei11696 Taiwan International PhD Program in Biomedical Engineering College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan Stanford Byers Center for Biodesign Stanford University CA94305-5428 United States Graduate Institute of Biomedical Optomechatronics College of Biomedical Engineering Taipei Medical University Taipei11031 Taiwan

Nickel and manganese compounds are widely applied as efficient battery-type active materials for energy storage devices, due to high theoretical capacities and abundant redox states for generating redox reactions to store charges. Morphology plays significant roles on energy storage ability. Structure directing agent (SDA) is widely reported to have ability for modulating configurations of active materials and to achieve excellent surface properties. In this work, it is the first time to use NH4BF4 and NH4HF2 as structure directing agents for synthesizing nickel manganese compounds derived from ZIF67 as active materials of energy storage devices. Bimetallic compounds are composed of nickel hydroxide and manganese oxide, which presents the favorable two-dimensional flower-like structure with high surface area and abundant redox states. The largest specific capacitance (CF) of 1358.2 F/g corresponding to the capacity of 226.4 mAh/g are achieved for the bimetallic compound synthesized using the Ni to Mn precursor ratio of 1 to 1 (NiMn11). The energy storage device assembled using NiMn11 and reduced graphene oxide on Ni foams presents a maximum energy density of 11.45 Wh/kg at the power density of 0.35 kW/kg, and excellent long-term stability with the CF retention of 85.6% and Coulombic efficiency of 87.5% after 10,000 cycles. © 2023

关键词： Fluorine compounds

来源：评论

学校读者我要写书评

暂无评论

Design of experiments as a strategy for modulating the colloidal stability, physico-chemical properties and drug-delivery potential of small mesoporous silica nanoparticles

引用

Advanced Powder Technology 2023年第10期34卷

作者： Lestari, Windy Ayu Saputra, Ozi Adi Díaz-García, Diana Wahyuningsih, Sayekti Gómez-Ruiz, Santiago Wibowo, Fajar Rakhman Magister Program in Chemistry Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta57126 Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Surakarta57126 Indonesia COMET-NANO Group Departamento de Biología y Geología Física y Química Inorgánica Universidad Rey Juan Carlos Calle Tulipán s/n Madrid MóstolesE-28933 Spain Institute of Chemistry Taiwan International Graduate Program Sustainable Chemical Science and Technology Academia Sinica Taipei115 China Department of Chemical Engineering National Taiwan University Taipei10617 China

The synthesis of highly stable small mesoporous silica nanoparticles (SMSN) in colloid dispersions is still challenging for biomedical applications. This study is focus on the successfully synthesis and formulation of porous, highly dispersed and colloidal stable SMSN via the soft–templating method. This study reports how the differences in synthesis variables, namely, temperature, amount of triethylamine (TEA) and/or cetyltrimethylammonium bromide (CTAB) influence the morphology and textural properties of SMSN. The analysis of the particle size, surface area, pore size, pore volume, zeta potential, and colloidal stability (represent by absorbance decreasing rate) show that temperature is the most influential factor governing the preparation of SMSN. The optimal conditions found for the synthesis of these nanoparticles were 50 °C, using a molar ratio between TEA and CTAB (3.5971: 1). Therefore, our study shows interesting insights on the effect of each variable to control the morphology and properties of small MSN for the design of this kind of nanoparticulated systems, therefore, giving valuable data to be considered for the future construction of tailor-made effective drug carrier materials. © 2023 The Society of Powder Technology Japan

关键词： Synthesis (chemical)

来源：评论

学校读者我要写书评

暂无评论

Hypoglycemic activity of curcuma mangga val. Extract via modulation of GLUT4 and ppar-γ mrna expression in 3T3-L1 adipocytes

引用

Journal of Experimental Pharmacology 2020年 12卷 363-369页

作者： Pujimulyani, Dwiyati Yulianto, Wisnu Adi Setyowati, Astuti Arumwardana, Seila Kusuma, Hanna Sari Widya Sholihah, Ika Adhani Rizal, Rizal Widowati, Wahyu Maruf, Ali Faculty of Agroindustry University of Mercu Buana Yogyakarta Yogyakarta 55753 Indonesia Biomolecular and Biomedical Research Center Aretha Medika Utama Bandung 40163 Indonesia Biomedical Engineering Study Program Department of Electrical Engineering Faculty of Engineering University of Indonesia Jakarta 16424 Indonesia Medical Research Center Faculty of Medicine Maranatha Christian University Bandung 40164 Indonesia Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular Implants Bioengineering College Faculty of Medicine Chongqing University Chongqing 400030 China

Background: There would be over 600 million people living with diabetes by 2040 as predicted by the World Health Organization. Diabetes is characterized by raised blood sugar and insulin resistance. Insulin regulates the influx of glucose into the cell by upregulating the glucose transporter type 4 (GLUT4) expression on the plasma membrane. Besides, PPAR-γ also controls the metabolism of glucose in adipose tissues. Curcuma mangga Val., denoted as C. mangga, is a native Indonesian medicinal plant that has many beneficial effects, including an antidiabetic potential. Purpose: In this research, we aimed to disclose the hypoglycemic activity of ethanol extract of C. mangga (EECM) in 3T3-L1 fibroblasts-derived adipocyte cells in regulating glucose uptake as confirmed by the GLUT4 and PPAR-γ gene expression. Methods: The uptake of glucose was determined using radioactive glucose, while the gene expression of GLUT4, PPAR-γ, and β-actin was quantified using mRNA segregation and real-time quantitative reverse transcription-polymerase chain reaction (RT-qPCR). Results: We discovered that EECM interventions (200 and 50 μg/mL) increased glucose uptake in lipid-laden 3T3-L1 cells by 14.75 and 8.86 fold compared to the control noninsulin, respectively (p < 0.05). At the same doses, they also increased GLUT4 mRNA expression by 8.41 and 11.18 fold compared to the control non-insulin, respectively (p < 0.05). In contrast, EECM interventions (200 and 50 μg/mL) showed lower levels of PPAR-γ mRNA expression compared to the control metformin, indicating the anti-adipogenic potentials of EECM. Conclusion: EECM showed hypoglycemic activity in lipid-laden 3T3-L1 cells by improving glucose ingestion into the cells, which was mediated by increased GLUT4 expression and downregulated PPAR-γ expression. © 2020 Pujimulyani et al.

关键词： 3T3-L1 adipocytes Curcuma mangga Val Glucose uptake GLUT4 PPAR-γ

来源：评论

学校读者我要写书评

暂无评论

Design ethnomathematics mobile module to improve mathematics thinking ability

引用

AIP Conference Proceedings 2023年第1期2614卷

作者： Ratri Rahayu Henry Suryo Bintoro Alif Catur Murti Mathematics Education Study Program Teacher Training and Education Faculty Universitas Muria Kudus PO.BOX 53 Gondangmanis Bae Kudus Indonesia Informatics Engineering Study Program Faculty of Engineering Universitas Muria Kudus PO.BOX 53 Gondangmanis Bae Kudus Indonesia

The aims of this study are (1) analyzing the need for teaching materials in the form of mobile modules in mathematics learning; (2) produce a draft outline of the ethnomathematics mobile module. The subjects of this study were the principal, mathematics teacher, seventh-grade students of Junior High School in Kudus, Indonesia. Data obtained from literature studies and field surveys include questionnaires, interviews, and FGD. The data analysis technique used is data triangulation with stages: reduction, data presentation, and conclusions based on data descriptions. The results showed that (1) students’ mathematical thinking skills are still low, teachers have not used application-based media, teachers have not developed ethnomathematical-based media, students need learning media that can improve mathematical thinking skills and make students interested in learning mathematics; (2) the ethnomathematics component of the mobile module is divided into 3 main parts, namely the introduction, the core, and the end. The introductory section includes the initial login page, instructions for use, and information regarding basic competencies. The core section contains the content of learning activities that contain ASEP (apperception), JAYA (cultural bridge), SITI (material description), EDI (self-evaluation). The last part contains motivational sentences.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effect of reaction time on the synthesis of PLA from L-lactide using Candida rugosa lipase and 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) solvent through ring-opening polymerization (ROP)

引用

AIP Conference Proceedings 2022年第1期2493卷

作者： Retno Dhita Anjarsari Catia Angli Curie M. Arif Darmawan M. Yusuf Arya Ramadhan, Misri Gozan Bioprocess Engineering Program Department of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok 16424 Indonesia

Polylactic Acid (PLA) is a thermoplastic that is used commonly in biomedical applications. It is known for its eco-friendliness, biocompatibility, biodegradability and is made of renewable materials. PLA is usually produced from L-lactide polymerization by the ring-opening polymerization (ROP) method, assisted by a metal-based catalyst. However, metal-based catalyst may leave harmful residue for medical purpose, so non-metal catalyst is needed. Enzyme is one of the best alternatives, especially lipase. The present study carried out the PLA synthesis via the ROP pathway using Candida rugosa lipase in [BMIM][PF6] solvent. The ROP was conducted at 80°C using 5% (w/w) CRL at various reaction time. The longest reaction time used, which was 4 days, lead to highest NMR-estimated number average molecular weight (Mn).

关键词：

来源：评论

学校读者我要写书评

暂无评论

Mini-Review: The potential of raffinose as a prebiotic

引用

IOP Conference Series: Earth and Environmental Science 2022年第1期980卷

作者： A A Anggraeni Culinary Science Study Program Faculty of Engineering Universitas Negeri Yogyakarta Indonesia

Prebiotics are dietary fiber components that cannot be digested by the human gastrointestinal tract but can be selectively fermented by bacteria in the gastrointestinal tract. Therefore, prebiotics provides health effects for humans. The specificity of prebiotics is determined by the bacteria that are specifically capable of fermenting the prebiotic substrate. The characteristics of prebiotic substrate need to be investigated in-vitro and in-vivo to determine the function and effectiveness of the substrate as a prebiotic. The prebiotic production process must be able to keep the prebiotic components stable. Raffinose is an oligosaccharide that has potential as a prebiotic. This article will discuss raffinose chemical structure, degrading enzymes, and health benefits as a prebiotic. Raffinose consists of 3 monomers, namely α-D-galactose, α-D-glucose, and α-D-fructose. Substrates containing raffinose-family oligosaccharides (RFOs) are the source of raffinose. Those substrates can be degraded to raffinose by the α-1,6-galactosidase. Raffinose can increase the growth of lactic acid bacteria, suppress the growth of pathogenic bacteria, increase short-chain fatty acids (SCFA), reduce constipation, inhibit the formation of putrefactive compounds from protein, and reduce the risk of cardiovascular diseases.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Volatolomics in healthcare and its advanced detection technology

引用

Nano Research 2022年第9期15卷 8185-8213页

作者： Wenwen Hu Weiwei Wu Yingying Jian Hossam Haick Guangjian Zhang Yun Qian Miaomiao Yuan Mingshui Yao School of Aerospace Science and Technology Xidian UniversityXi’an 730107China Interdisciplinary Research Center of Smart Sensors School of Advanced Materials and NanotechnologyXidian UniversityXi’an 730107China Faculty of Chemical Engineering and Russell Berrie Nanotechnology Institute Technion-Israel Institute of TechnologyHaifa 3200002Israel Department of Thoracic Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China Stomatology Hospital School of StomatologyZhejiang University School of MedicineClinical Research Center for Oral Diseases of Zhejiang Province Key Laboratory of Oral Biomedical Research of Zhejiang ProvinceCancer Center of Zhejiang UniversityHangzhou 310006China The Eighth Affiliated Hospital Sun Yat-sen UniversityShenzhen 518033China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 310006China Institute for Integrated Cell-Material Sciences Kyoto University Institute for Advanced StudyKyoto UniversityKyoto 606-8501Japan

Various diseases increasingly challenge the health status and life quality of human *** emitted from patients has been considered as a potential family of markers,volatolomics,for diagnosis/*** are two fundamental issues of volatolomics in *** one hand,the solid relationship between the volatolome and specific diseases needs to be clarified and *** the other hand,effective methods should be explored for the precise detection of *** comprehensive review articles had been published in this ***,a timely and systematical summary and elaboration is still *** this review article,the research methodology of volatolomics in healthcare is critically considered and given out,at ***,the sets of volatolome according to specific diseases through different body sources and the analytical instruments for their identifications are systematically ***,the advanced electronic nose and photonic nose technologies for volatile organic compounds(VOCs)detection are well *** existed obstacles and future perspectives are deeply thought and *** article could give a good guidance to researchers in this interdisciplinary field,not only understanding the cutting-edge detection technologies for doctors(medicinal background),but also making reference to clarify the choice of aimed VOCs during the sensor research for chemists,materials scientists,electronics engineers,etc.

关键词： volatolomics electronic nose disease diagnosis sensor artificial olfaction volatile organic compounds

来源：评论

学校读者我要写书评

暂无评论

Application of green architecture concepts in Wanakota apartments

引用

AIP Conference Proceedings 2022年第1期2453卷

作者： A. Andiyan Abdul Gani Alfarizi Architecture Study Program Faculty of Science and Engineering Universitas Faletehan Bandung Indonesia

The shrinking land in urban areas and the worsening world climate crisis have created a new residential development problem. One way to maximize land designated for residential use is to build vertical housing, such as constructing flats and apartments that can accommodate more residents in a limited area. However, it also creates new problems because the use of energy required for a building will be extensive. The application of Green Architecture is an effort to reduce energy use for buildings and reduce the negative impact of buildings on the environment. one helpful reference is applying green architectural concepts. The apartment Wanakota is designed using the green building concept with the Indonesian Green Building Council (GBCI). Wanaka means City Forest, and trees inspire this name as trees. This tree is not only an aesthetic enhancer but as a CO2 absorber and oxygen supplier in the environment.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The effects of fermentation duration on chemical properties, physical properties, and organoleptic of Butterfly Pea Kombucha

引用

AIP Conference Proceedings 2023年第1期2634卷

作者： Rina Rifqie Mariana Soenar Soekopitojo Monita Putri Rusadi Culinary Education Study Program Faculty of Engineering Universitas Negeri Malang. Semarang 5 Malang East Java Indonesia

Kombucha tea is a traditional fermented beverage product of tea and sugar solution using kombucha starter culture (Acetobacter xylinum and some types of yeast) that has some health effects, among others, as an antioxidant, antibacterial, endurance improvement, and others. This study aimed to determine the impact of time fermentation on the chemical properties (capacity of antioxidants, sugar content, alcohol content, and pH value), the physical properties (colour), and the organoleptic properties of butterfly pea kombucha tea. This research used explorative and descriptive methods. The treatment was fermentation time: 0-day, 3 days, 6 days and 9 days against chemical, physical, and organoleptic properties of the butterfly pea kombucha. The research design used the Completely Randomized Design (CRD) with two repetitions for each treatment. The data were analyzed using ANOVA with a further DMRT test. This study showed that the duration of fermentation affects the antioxidant capacity, sugar content, pH and alcohol content, the colour's physical properties, and the organoleptic properties of butterfly pea kombucha. The results showed that 9 days of the time fermentation had the highest value of colour brightness (L) 20.3875, reddish (a+) 20.195, antioxidant of 42.77600 ppm, alcohol content 0.735% and had a taste organoleptic value of 3.98, and the colour hedonic score of 4.16. Meanwhile, 0-day fermentation had the highest value of a blue colour level (b-) of 2.76, the sugar content of 14.600 %, and had highest aroma organoleptic value of 3.9. A fermentation time of 9 days was not recommended for production.

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：