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Structural elucidation of mulberry leaf oligosaccharide and its selective promotion of gut microbiota to alleviate type 2 diabetes mellitus

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Food Science and Human Wellness 2024年第4期13卷 2161-2173页

作者： Tenggen Hu Yuanshan Yu Jijun Wu Yujuan Xu Gengsheng Xiao Kejing An Erna Li Sentai Liao Yuxiao Zou Sericultural&Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional FoodsMinistry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China Huagongliya(Foshan)Technology ind.stry co. Ltd.Foshan 528313China Heyuan Branch Guangdong Laboratory for Lingnan Modern AgricultureHeyuan 517001China Zhongkai University of Agriculture and Engineering Guangzhou 510225China

Two oligosaccharide fractions(MLO 2-1 and 2-2)were purified from enzymatic hydrolysate of mulberry leaf *** results of simulated digestion showed that MLO 2-2 was a digestible oligosaccharide,which co.ld be degraded by human digestive juice;while MLO 2-1 possessed the non-digestible property in the upper gastrointestinal tract and performed the function by regulating the gut ***,MLO 2-1 was selected for the further *** structure of MLO 2-1 was elucidated as follow:α-T-Glcp-(1→3)-β-Glcp-(1→5)-α-Araf-(1→5)-α-Araf-1→5)-α-Araf-(1→3)-α-(2-OAc)-*** in vitro fecal fermentation results showed that MLO 2-1 co.ld modulate the co.position of gut ***,MLO 2-1 was effectively metabolized by fecal bacteria to produce lactate and short chain fatty acids,especially acetate and *** specific metabolic pathways of MLO 2-1 by gut microbiota were further *** microbiota analysis revealed that MLO 2-1 selectively promoted the growth of Ligilactobacillus murinus,a co.mensal bacterium presented a reduced level in T2DM *** experiments ind.cated that MLO 2-1 and *** exhibited hypoglycemic *** results demonstrated that MLO 2-1 might alleviate T2DM by selectively accelerating the proliferation of ***.

关键词： Mulberry leaf oligosaccharide Characterization Gut microbiota Lactobacillus murinus Hypoglycemic activity

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Study on metal reco.ery process and kinetics of oxidative leaching from spent LiFePO_(4)Li-batteries

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Chinese Journal of Chemical Engineering 2024年第4期68卷 94-102页

作者： Xiaoming Zhang Wen Xie Xiaolei Zhou Wenjie Zhang Jiawei Wen Xin Wang Guoyong Huang Shengming Xu co.lege of New Energy and Materials China University of PetroleumBeijing 102249China State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of PetroleumBeijing 102249China Beijing Spacecrafts Beijing 100094China Ganfeng Lithium Group co. Ltd.Xinyu 338000China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Beijing Key Laboratory of Fine Ceramics Tsinghua UniversityBeijing 100084China

A green environmental protection and enhanced leaching process was proposed to reco.er all elements from spent lithium iron phosphate(LiFePO_(4)) lithium *** order to reduce the influence of Al impurity in the reco.ery process,NaOH was used to remove *** impurity removal,the spent LiFePO_(4) cathode material was used as raw material under the H_(2)SO_(4) system,and the pressure oxidation leaching process was adopted to achieve the preferential leaching of *** E-pH diagram of the Fe-P-Al-H_(2)O system can determine the stable region of each element in the reco.ery process of spent LiFePO_(4)*** the optimal co.ditions(500 r·min^(-1),15 h,363.15 K,0.4 MPa,the liquid-solid ratio was 4:1 ml·g^(-1)and the acid-material ratio was 0.29),the leaching rate of Li was 99.24%,Fe,Al,and Ti were 0.10%,2.07%,and 0.03%,*** Fe and P were precipitated and reco.ered as FePO_(4)·2H_(2)*** kinetic analysis shows that the process of high-pressure acid leaching of spent LiFePO_(4) materials depends on the surface chemical *** the life cycle assessment(LCA)of the spent LiFePO_(4) whole reco.ery process,eight midpoint impact categories were selected to assess the impact of reco.ery *** results can provide basic environmental information on production process for recycling ind.stry.

关键词： Spent LiFePO_(4)Li-batteries Oxidative leaching Kinetic study Life cycle assessment

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Study on green power supply modes for heavy load in Remote Areas

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Global Energy Interco.nection 2024年第4期7卷 475-485页

作者： Yu Li Yixi Cuomu Yiming Gao Guoqin Lv Weiwei Lin Sirui Li Changchun Zhou State Grid Xizang Electric Power co. Ltd.Lhasa 850010Tibet Autonomous RegionP.R.China Global Energy Interco.nection Development and co.peration Organization Beijing 100031P.R.China State Grid Fujian Power Eco.omic Research Institute Fuzhou 350012P.R.China Eind.oven University of Technology Eindhoven.5621 AENetherlands

In this study,the present situation and characteristics of power supply in remote areas are *** studying the cases of power supply projects in remote areas,the experience is analyzed and described,and the applicability of related technologies,such as grid-forming storage and power load management,is studied,including grid-co.nection technologies,such as grid-forming co.verters and power load *** this basis,three power-supply modes were *** application scenarios and advantages of the three modes were co.pared and *** on the local development situation,the temporal sequences of the three schemes are described,and a case study was *** study of the heavy-load power supply mode in remote areas co.tributes to solving the problem of heavy-load green power co.sumption in remote areas and promoting the further development of renewable energy.

关键词： Remote area Renewable energy Grid-forming storage Power load management Power supply mode

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Research on Travel Preferences of Wheelchair Users in Barrier-Free Environments and Improvement Strategies for Adaptive Urban Roads

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景观设计学（中英文） 2024年第4期12卷 26-45页

作者： Qiling CHEN Yanan HAN Ziai ZHOU Mingrui MAO Beijing UrbanXYZ Technology co. Ltd.Beijing 100027

The co.struction of a barrier-free environment is an important measure that guarantees the safety,right-of-way,and interests of the disabled,the elderly,and other mobility disadvantaged *** is also an ind.spensable part of the low-carbon urban transportation and a necessary way to protect the rights of mobility disadvantaged groups in green *** this paper,the researchers co.ducted life log surveys on the travels of 10 wheelchair users residing in Beijing with IoT Inspector,a self-developed,wheelchairmountable intelligent sensing *** users’travel preferences and reasons were then analyzed using the image and textual data from the *** with a mapping workshop,a co.parative analysis was performed on the bumpiness of sidewalk paving *** study found that wheelchair travelers’preferred non-motor lanes over sidewalks;substandard curb ramps,unleveled tree pools,limited access widths,and bumpy pavement were the main problems faced by wheelchair users in sidewalk *** addition,the study explores the inclusive needs and challenges of non-motorized right-of-way for new transportation means at urban planning and traffic management *** on multi-sourced data,this paper discusses the possibility of assessing urban barrier-free environment and representing a narrative of the needs of mobility disadvantaged groups,so as to provide practical experience and technical support to the improvement strategies of adaptive roads.

关键词： Inclusive Landscapes Barrier-free Environment Mobility Disadvantaged Group Multi-sourced Data Spatial Data Wheelchair Users Mapping Right-of-Way

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Recent advances in functional utilisation of environmentally friendly and recyclable high-performance green bioco.posites: A review

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Chinese Chemical Letters 2024年第4期35卷 73-85页

作者： Guiyang Zheng Xuelian Kang Haoran Ye Wei Fan Christian Sonne Su Shiung Lam Rock Keey Liew Changlei Xia Yang Shi Shengbo Ge co.Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Textile Science and Engineering&Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi'an Polytechnic UniversityXi'an 710048China Department of Bioscience Arctic Research Centre(ARC)Aarhus UniversityFrederiksborgvej 399PO Box 358DK-4000 RoskildeDenmark Sustainability Cluster School of EngineeringUniversity of Petroleum&Energy StudiesDehradunUttarakhand 248007India Higher Institution Centre of Excellence(HIco.) Institute of Tropical Aquaculture and Fisheries(AKUATROP)Universiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Center for Transdisciplinary Research Saveetha Institute of Medical and Technical SciencesSaveetha UniversityChennai 600072India NV Western PLT Georgetown 10400PenangMalaysia Aerospace Kaitian Environmental Technology co. Ltd.Changsha 410000China Hunan Hongsen Novel Material Technology co. Ltd.Yiyang 413407China

Humans have relied on biomass for survival and development since the Stone Age. All aspects of human needs for materials are co.ered by tools, fuel, and buildings. Nowadays, metals and petroleum-based materials are widely used in highly developed ind.stries. Unfortunately, environmental co.tamination and the loss of natural resources have led to the reemergence of biomass resources as efficient and sustainable energy sources. Notably, simple and direct applications can no longer meet the demand for functionalization, high performance of materials and co.struction materials. Therefore, it is imperative to modify biomass and co.bine its utilisation to produce functionalization and high performance materials. For example, co.struction materials with superior mechanical properties and water resistance can be produced by reinforcing fibres to facilitate crosslinking. Water-oil separation or adsorption effects of hydrogels and aerogels are determined by the porosity and lightness of biomass, bioco.posite co.ductor is prepared by chimaeric co.ductive material. Here, we review the approaches that have been taken to devise an environmentally friendly yet fully recyclable and sustainable functionalised bioco.posites from biomass and its potential directions for future research.

关键词： Bioco.posite Renewable Sustainability Advanced functional material Pollution mitigation

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Effect of dry-wet cycles on dynamic properties and microstructures of sandstone:Experiments and modelling

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International Journal of Mining Science and Technology 2024年第5期34卷 655-679页

作者： Hai Pu Qingyu Yi Andrey P.Jivkov Zhengfu Bian Weiqiang Chen Jiangyu Wu State Key Laboratory of Intelligent co.struction and Healthy Operation and Maintenance of Deep Earth Engineering China University of Mining and TechnologyXuzhou 221116China Key Laboratory of Xinjiang co.l Resources green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China Department of Solids and Structures School of EngineeringUniversity of ManchesterManchester M139PLUK School of Environment Science and Spatial Informatics China University of Mining and TechnologyXuzhou 221116China Department of Civil and Environmental Engineering Rice UniversityHouston 77005USA State Key Laboratory of High Performance Civil Engineering Materials Jiangsu Research Institute of Building Science Co.Ltd.Nanjing 210008China Department of Materials University of OxfordOxford OX13PHUK

Underground pumped storage power plant(UPSP)is an innovative co.cept for space recycling of abandoned *** realization requires better understanding of the dynamic performance and durability of reservoir *** paper co.ducted ultrasonic detection,split Hopkinson pressure bar(SHPB)impact,mercury intrusion porosimetry(MIP),and backscatter electron observation(BSE)tests to investigate the dynamical behaviour and microstructure of sandstone with cyclical dry-wet damage.A co.pling FEM-DEM model was co.structed for reappearing mesosco.ic structure *** results show that dry-wet cycles decrease the dynamic co.pressive strength(DCS)with a maximum reduction of 39.40%,the elastic limit strength is reduced from 41.75 to 25.62 *** sieved fragments obtain the highest crack growth rate during the 23rd dry-wet cycle with a predictable life of 25 cycles for each rock *** pore fractal features of the macropores and micro-meso pores show great differences between the early and late cycles,which verifies the co.putational statistics analysis of particle *** numerical results show that the failure patterns are governed by the strain in pre-peak stage and the shear cracks are *** dry-wet cycles reduce the energy transfer efficiency and lead to the discretization of force chain and crack fields.

关键词： Underground pumped storage power plant Dry-wet cycles Split Hopkinson pressure bar Macro and micro properties FEM-DEM co.pling model Damage characterization

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Mechanical behaviors of warm and ice-rich frozen soil stabilized with sulphoaluminate cement

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Journal of Mountain Science 2024年第1期21卷 335-345页

作者： WANG Honglei ZHANG Hu ZHANG Jianming ZHANG Qi YIN Zhenhua State Key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China School of Civil Engineering and Transportation Northeast Forestry UniversityHarbin 150040China National Key Laboratory of green and Long-Life Road Engineering in Extreme Environment CCCC First Highway Consultants Co.LtdXi'an 710065China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing 100081China

The warm and ice-rich frozen soil is characterized by high unfrozen water co.tent, low shear strength and large co.pressibility, which is unreliable to meet the stability requirements of engineering infrastructures and foundations in permafrost regions. In this study, a novel approach for stabilizing the warm and ice-rich frozen soil with sulphoaluminate cement was proposed based on chemical stabilization. The mechanical behaviors of the stabilized soil, such as strength and stress-strain relationship, were investigated through a series of triaxial co.pression tests co.ducted at -1.0℃, and the mechanism of strength variations of the stabilized soil was also explained based on scanning electron microsco.e test. The investigations ind.cated that the strength of stabilized soil to resist failure has been improved, and the linear Mohr-co.lomb criteria can accurately reflect the shear strength of stabilized soil under various applied co.fining pressure. The increase in both curing age and cement mixing ratio were favorable to the growth of co.esion and internal friction angle. More importantly, the strength improvement mechanism of the stabilized soil is attributed to the formation of structural skeleton and the generation of cementitious hydration products within itself. Therefore, the investigations co.ducted in this study provide valuable references for chemical stabilization of warm and ice-rich frozen ground, thereby providing a basis for in-situ ground improvement for reinforcing warm and ice-rich permafrost foundations by soil-cement co.umn installation.

关键词： Permafrost regions Frozen soil Mechanical behavior Chemical stabilization Ground improvement Ground modification

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Dendrobium officinale polysaccharide attenuates type 2 diabetes in mice model by modulating gut microbiota and alleviating intestinal muco.al barrier damage

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Food Science and Human Wellness 2024年

作者： Xiaoxia Chen Chun Chen Changyang Ma Wenyi Kang Junlin Wu Xiong Fu Guangzhou Wondfo Health Science and Technology co.， ltd. National R&D Center for Edible Fungus Processing Technology， Henan University Guangdong Province Key Laboratory for green Processing of Natural Products and Product Safety Guangzhou Institute of Modern ind.strial Technology 4. Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center) SCUT-Zhuhai Institute of Modern ind.strial Innovation， School of Food Science and Engineering， South China University of Technology

The purpose of this study was to investigate the hypoglycemic effect and mechanism of Dendrobium officinale polysaccharide (DOP) on type 2 diabetes mellitus (T2DM) mice established by high-fat diet and streptozotocin. The results showed that DOP improved glyco.ipid metabolism and serum inflammation levels， and inhibited intestinal-derived lipopolysaccharide (LPS) translocation， suggesting that inhibiting LPS-mediated intestinal barrier damage may be a key target for DOP to alleviate T2DM. Interestingly， the study found that DOP reduced intestinal inflammation and oxidative stress levels， significantly up-regulated the mRNA expression of tight junction proteins Claudin-1， Occludin and Zonula occluden-1 (ZO-1)， and ameliorated intestinal epithelial damage. In addition， DOP strongly inhibited the intestinal pathogenic bacteria and LPS-producing bacteria Helico.acter， Enteroco.cus and Desulfovibrio with a reduction rate of 95%， 73% and 9%， respectively， and promoted the proliferation of anti-inflammatory bacteria Bifidobacterium and Lactobacillus by 139% and 8%， respectively. Taken together， the hypoglycemic effect of DOP was related to the protection of intestinal muco.al barrier， and its underlying mechanism lied in its excellent anti-inflammatory and gut microbiota-modulatory effects， providing a theoretical basis for developing DOP as a novel prebiotic in functional food for diabetes.

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Structural and Luminescent Properties of Mg_(0.25-x)Al_(2.57)O_(3.79)N_(0.21):xMn^(2+)green-Emitting Transparent Ceramic Phosphor

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 533-540页

作者：郝留成 MIAO Xiaojun LI Kai ZHONG Jianying 涂兵田 YANG Zhangfu 王皓 Pinggao Group co. LtdPingdingshan 467001China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 430070China School of Materials Science and Engineering Anhui University of Science and TechnologyHuainan 232001China

A series of spinel-type Mg_(0.25-x)Al_(2.57)O_(3.79)N_(0.21):xMn^(2+)(MgAlON:xMn^(2+))phosphors were synthesized by the solid-state reaction *** transparent ceramic phosphors were fabricated by pressureless sintering followed by hot-isostatic pressing(HIP).The crystal structure,luminescence and mechanical properties of the samples were systematically *** transparent ceramic phosphors with tetrahedrally co.rdinated Mn^(2+)show strong green emission centered around 515 nm under blue light *** the Mn^(2+)co.centration increases,the crystal lattice expands slightly,resulting in a variation of crystal field and a slight red-shift of green emission *** weak absorption peaks in the transmittance spectra originate from the spin-forbidden ^(4)T_(1)(^(4)G)→^(6)A_(1) transition of Mn^(2+).The decay time was found to decrease from 5.66 to 5.16 ms with the Mn^(2+)*** present study co.tributes to the systematic understanding of crystal structure and properties of MgAlON:xMn^(2+)green-emitting transparent ceramic phosphor which has a potential application in high-power light-emitting diodes.

关键词： transparent ceramic phosphor green emission MgAlON photoluminescence

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Surface engineering of Li-and Mn-rich layered oxides for superior Li-ion battery

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Tungsten 2024年第1期6卷 259-268页

作者： Lu-Xiang Ma Tian-Dong Chen Chun-Xi Hai Sheng-De Dong Xin He Qi Xu Hang Feng AXin Ji-Tao Chen Yuan Zhou co.lege of Materials and Chemistry and Chemical Engineering Chengdu University of TechnologyChendu 610000China Qinghai Building and Materials Research co. LtdXining 810000China Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

The Li-and Mn-rich layered oxides(R-LNCM)are co.sidered as promising cathode materials for high-energy density lithium-ion batteries(LIBs).However,the interface side reaction aggravates the voltage and capacity fading between cathode material and electrolyte at high voltage,which severely hind.rs the practical application of LIB ***,lithium polyacrylate(LiPAA)as the bind.r and co.ting agent is applied to suppress the voltage and capacity fading of R-LNCM *** flexible LiPAA layers with high elasticity are capable of impeding cathode cracks on the particle surface via mechanical stress ***,superior voltage and capacity fading suppression on R-LNCM electrode is finally *** a result,LiPAA-R-LNCM cathode exhibits a remarkable specific capacity of 186 mA·h·g^(-1)with~73%retention at 1℃after ***,the co.responding average discharge potential is maintained to~3.1 V with only~0.4 V falling.

关键词： LiPAA interphase layer Interface side reaction Cathode cracks Capacity and voltage fading suppression Liand Mn-rich cathode

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