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Six Amino Acids among Natural Moisturizing Factors Responsible for Skin hydration: Improvement and Anti-Aging of Skin by Galactomyces Ferment Filtrate-PiteraTM Containing Skin Moisturizer

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Journal of Cosmetics, Dermatological Sciences and Applications 2024年第2期14卷 113-127页

作者： Kukizo Miyamoto Yoko Munakata Keisuke Fujii Wang Summer Ley Yang Suda Sudarsana Masutaka Furue Research and Development Kobe Innovation Center Procter and Gamble Innovation GK Kobe Japan Global Scientific Communications P & G Guangzhou Ltd. Guangzhou China Department of Dermatology Graduate School of Medical Sciences Kyushu University Fukuoka Japan

Background: Natural moisturizing factors (NMFs) are filaggrin-derived components in the cornified layer that are critical for maintaining healthy skin moisturization and barrier function. However, studies have reported conflicting findings on the relationship between NMF levels and aging, while few studies have investigated this relationship clinically. To fill this research gap, we determined the levels of major NMF components such as free amino acids, pyrrolidone carboxylic acid, and urocanic acids, and individually verified their relationships with skin hydration, barrier function, age, and skin aging. Purpose: The objective of this study was to clinically investigate the relationship between NMF components levels and skin aging in facial skin. The main NMF components were obtained from facial skin and quantified. We then selected NMF components showing strong relationships to skin hydration, and analyzed the relationships of the levels of these selected NMF components with signs of skin aging, namely, texture, pores, wrinkles, and dullness (L-value). We also examined the efficacy of treatment with a skin care formula (SK-II Facial Treatment Essence, called SK-II FTE hereafter) including Galactomyces ferment filtrate (GFF, PiteraTM) on the selected NMF component levels associated with skin hydration and barrier function, and the signs of skin aging of texture, pores, wrinkles, and dullness (L-value). Method: We conducted two clinical trials in this research. In Study 1, we measured 23 NMF components using tape-stripped cornified layer to quantify them via an HPLC method in 196 Asian females aged 20 to 59 (mean S.D., 38.6 9.4). Facial visual aging parameters [texture, pores, wrinkles, and dullness (L-value)], as well as elasticity (R7), skin hydration, and TEWL, were quantified using facial skin imaging and skin physical property measurement devices. Study 2 was performed to evaluate whether the facial application of SK-II FTE affects the NMF levels and skin aging parameters in 63 Asian female volunteers aged 2

关键词： NMF Amino Acid Visual Aging Parameter hydration Aging Texture Pore Wrinkle Dullness Galactomyces Ferment Filtrate PiteraTM SK-II Facial Treatment Essence

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Rational Design of Ruddlesden-Popper Perovskite Ferrites as Air Electrode for Highly Active and Durable Reversible Protonic Ceramic Cells

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Nano-Micro Letters 2024年第9期16卷 308-324页

作者： Na Yu Idris Temitope Bello Xi Chen Tong Liu Zheng Li Yufei Song Meng Ni Department of Building and Real Estate Research Institute for Sustainable Urban Development(RISUD)and Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057GuangdongPeople’s Republic of China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongPeople’s Republic of China

Reversible protonic ceramic cells(RePCCs)hold promise for efficient energy storage,but their practicality is hindered by a lack of high-performance air electrode materials.Ruddlesden-Popper perovskite Sr_(3)Fe_(2)O_(7−δ)(SF)exhibits superior proton uptake and rapid ionic conduction,boosting activity.However,excessive proton uptake during RePCC operation degrades SF’s crystal structure,impacting durability.This study introduces a novel A/B-sites co-substitution strategy for modifying air electrodes,incorporating Sr-deficiency and Nb-substitution to create Sr_(2.8)Fe_(1.8)Nb_(0.2)O_(7−δ)(D-SFN).Nb stabilizes SF’s crystal,curbing excessive phase formation,and Sr-deficiency boosts oxygen vacancy concentration,optimizing oxygen transport.The D-SFN electrode demonstrates outstanding activity and durability,achieving a peak power density of 596 mW cm^(−2)in fuel cell mode and a current density of−1.19 A cm^(−2)in electrolysis mode at 1.3 V,650℃,with excellent cycling durability.This approach holds the potential for advancing robust and efficient air electrodes in RePCCs for renewable energy storage.

关键词： Reversible protonic ceramic cells Air electrode Ruddlesden-Popper perovskite hydration Oxygen reduction reaction

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hydration Characteristics and Mechanical Properties of Cement-Based Materials Modified by Calcined Zeolite and Montmorillonite

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Journal of Renewable Materials 2023年第5期11卷 2191-2207页

作者： Lingling Qin Mengya Zhou Jiahao Yan Ping Duan Yingcan Zhu Wei Chen Zuhua Zhang Aiguo Wang Faculty of Materials Science and Chemistry Key Laboratory of Geological Survey and Evaluation of Ministry of EducationChina University of GeosciencesWuhan430074China Key Laboratory of Advanced Building Materials of Anhui Province Anhui Jianzhu UniversityHefei230022China Guangxi Key Laboratory of New Energy and Building Energy Saving Guilin University of TechnologyGuilin541004China Key Laboratory of Road Structure and Materials of Ministry of Transport Chang’an UniversityXi’an710064China Centre for Sustainable Agricultural Systems University of Southern QueenslandToowoombaQLD4350Australia State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan430070China Key Laboratory for Green&Advanced Civil EngineeringMaterials and Application Technology of Hunan Province College of Civil EngineeringHunan UniversityChangsha410082China

Montmorillonite and clinoptilolite zeolite were used as representative materials to prepare calcined clay-cement binary cementitious materials in order to study the effect of calcination treatment on the activation of clay minerals and the activity difference between layered and framed clays in this research.The influence of different calcined clay content(2%,4%,6%,8%,10%)on the fluidity,compressive strength,microstructure,phase change,and hydration heat of cement-based materials were analyzed.The calcined clay improves the fluidity of cement-based materials as compared with the uncalcined group.The addition of calcined montmorillonite(CMT)improves the development of mechanical strength,and the optimal compressive strength reaches 85 MPa at 28 days with 8%CMT.However,the activity of calcined clinoptilolite zeolite(CZL)is weak with few reaction sites,which slightly reduced the mechanical strength as compared to the blank sample.The addition of CMT changes the microscopic morphology of hydration products such as C-S-H and C-A-H,leading to the formation and transformation of ettringite in the early stage.It promotes the gradual polymerization of Si-O bonds into Si-O-Si bonds simultaneously,which accelerates the early hydration process.However,CZL acts mainly as a filling function in the cementitious system.In brief,CMT as an admixture can improve the mechanical properties of cement,but CZL has little effect.This work provides a guideline for the applications of calcined clay in cement,considering the influence of clay type on workability and mechanical strength.

关键词： Calcined clay cement montmorillonite clinoptilolite zeolite mechanical strength hydration

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hydration Lubrication in Biomedical Applications:From Cartilage to Hydrogels

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Accounts of Materials Research 2022年第2期3卷 213-223页

作者： Weifeng Lin Jacob Klein Department of Molecular Chemistry and Materials Science Weizmann Institute of ScienceRehovot 76100Israel

CONSPECTUS:In the course of evolution,nature has achieved remarkably lubricated surfaces,with healthy articular cartilage in the major(synovial)joints being the prime example,that can last a lifetime as they slide past each other with ultralow friction(friction coefficientμ=the force to slide surfaces past each other/load compressing the surfaceshydration lubrication has emerged as a new paradigm for boundary lubrication in aqueous media based on subnanometer hydration shells which massively reduce frictional dissipation.The vectors of hydration lubrication include trapped hydrated ions,hydrated surfactants,biological macromolecules,biomimetic polymers,polyelectrolytes and polyzwitterionic brushes,and close-packed layers of phosphatidylcholine(PC)vesicles,all having in common the exposure of highly hydrated groups at the slip plane.Among them,vesicles(or bilayers)of PC lipids,which are the most widespread lipid class in mammals,are exceptionally efficient lubricating elements as a result of the high hydration of the phosphocholine headgroups they expose.Such lipids are ubiquitous in joints,leading to the proposal that macromolecular surface complexes exposing PC bilayers are responsible for the remarkable lubrication o

关键词： hydration frictional exceptional

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Influence of nanosized magnesia on the hydration of borehole-sealing cements prepared using different methods

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International Journal of Coal Science & Technology 2023年第4期10卷 343-360页

作者： Quanle Zou Jinfei Zhan Xin Wang Zhen Huang State Key Laboratory of Coal Mine Disaster Dynamics and Control School of Resources and Safety EngineeringChongqing UniversityChongqing 400044China

Gas drainage is an efective technology for gas control in coal mines.A high borehole-sealing quality is the fundamental precondition for efcient gas drainage.The expansibilities of cement pastes used in borehole-sealing processes are critical for the borehole-sealing efect.Nanosized magnesia expansive agents are used to improve the expansibilities of cement pastes and improve the borehole-sealing efect.Nuclear magnetic resonance spectrometry and scanning electron microscopy were adopted to study the efects of nanosized magnesia on the hydration of borehole-sealing cements used with diferent preparation methods.The results showed that an increase in the mass fraction of the nanosized magnesia promoted cement hydration,and the mass fraction was positively correlated with the promotion efect.The use of diferent preparation methods did not change the water-phase distribution in the cement.When using the wet-mixing preparation method,nanosized magnesia promoted the induction,acceleration,and deceleration periods of hydration;when using the dry-mixing preparation method,the nanosized magnesia promoted the induction period of cement hydration,and the promotion efect was less obvious than that seen when using the wet-mixing method.When using the wet-mixing preparation method,the nanosized magnesia was uniformly dispersed,thus enlarging the surface area of the reaction,which provided more nucleation sites for the hydration products of the cement and therefore accelerated the hydration reaction.When using the dry-mixing preparation method,the nanosized magnesia powders were dispersed nonuniformly and aggregated.Under these conditions,only a few nanosized magnesia particles on the surfaces of the aggregated clusters took part in hydration,so only a small number of nucleation sites were provided for the hydration products of cement.This led to inconsistent hydration of cement pastes prepared using the dry-mixing method.The surface porosity of the cement prepared with the wet-mixing preparation method frst decreased and then

关键词： Borehole-sealing cement Nanosized magnesia Preparation method hydration Morphological analysis Nuclear magnetic resonance relaxation analysis

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A failure criterion for shale considering the anisotropy and hydration based on the shear slide failure model

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International Journal of Mining Science and Technology 2023年第4期33卷 447-462页

作者： Qiangui Zhang Bowei Yao Xiangyu Fan Yong Li Nicholas Fantuzzi Tianshou Ma Yufei Chen Feitao Zeng Xing Li Lizhi Wang Petroleum Engineering School Southwest Petroleum UniversityChengdu 610500China Department of Civil Geological and Mining EngineeringÉcole Polytechnique de MontréalMontreal H3T 1J4Canada State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400030China Department of Civil ChemicalEnvironmental and Materials EngineeringUniversity of BolognaBologna 40136Italy Department of Civil and Mineral Engineering University of TorontoToronto M5S 1A4Canada

A failure criterion fully considering the anisotropy and hydration of shale is essential for shale formation stability evaluation.Thus,a novel failure criterion for hydration shale is developed by using Jaeger’s shear failure criterion to describe the anisotropy and using the shear strength reduction caused by clay minerals hydration to evaluate the hydration.This failure criterion is defined with four parameters in Jaeger’s shear failure criterion(S_(1),S_(2),a andφ),three hydration parameters(k,ω_(sh)andσ_(s))and two material size parameters(d and l0).The physical meanings and determining procedures of these parameters are described.The accuracy and applicability of this failure criterion are examined using the published experimental data,showing a cohesive agreement between the predicted values and the testing results,R^(2)=0.916 and AAREP(average absolute relative error percentage)of 9.260%.The error(|D_(p)|)is then discussed considering the effects ofβ(angle between bedding plane versus axial loading),moisture content and confining pressure,presenting that|Dp|increases whenβis closer to 30°,and|D_(p)|decreases with decreasing moisture content and with increasing confining pressure.Moreover,|D_(p)|is demonstrated as being sensitive to S1and being steady with decrease in the data set whenβis 0°,30°,45°and 90°.

关键词： Shale Failure criterion Mechanical strength Shear slide failure Anisotropy hydration

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Effects of Water-cement Ratio and hydration Heat Regulating Materials on hydration Process of Early-age Cementitious Materials

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Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 88-96页

作者：赵海涛 XIANG Yu 徐文 CHEN Xiaodong ZHU Yue WU Haotian LIU Shibin College of Civil and Transportation Engineering Hohai UniversityNanjing 210098China College of Materials Science and Engineering Southeast UniversityNanjing 211189China China Communications Construction Company Urban Investment Holding Co.Ltd. Guangzhou 510623China Guizhou Electric Power Design Research Institute Guizhou 550008China

By means of low-field nuclear magnetic resonance(LF-NMR),the transverse relaxation time(T_(2))signals of physically bound water in cement paste were monitored to indicate water content change and characterize the early-age hydration process.With the curves of the T_(2)signals and hydration time obtained,the hydration process could be divided into four typical periods using the null points of the second derivative curve,and the influences of water-cement ratio(w/c)and hydration heat regulating materials(HHRM)on hydration process were analyzed.The experimental results showed that the hydration rate of pure cement paste in accelerated period presented a positive correlation with w/c.Compared to pure cement paste,the addition of HHRM extended all four periods,and led to a much faster hydration rate in initial period as well as a slower rate in accelerated period.Finally,according to the LFNMR test results,the early-age hydration model of cementitious materials was proposed considering w/c and HHRM content.

关键词： hydration water-cement ratio hydration heat regulating materials cementitious materials early age low-field nuclear magnetic resonance

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Properties and hydration Mechanism of Cementitious Materials Prepared from Calcined Coal Gangue

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Journal of Renewable Materials 2023年第3期11卷 1223-1236页

作者： Zhaopeng Wang Shaowu Jiu Hui Li Kaifeng Zhang Simeng Cheng School of Materials and Engineering Xi’an University of Architecture and TechnologyXi’an710055China

The preparation of cementitious materials by replacing part of the cement with activated coal gangue is of great significance to the cement industry in terms of carbon reduction and coal-based solid waste utilization.For this paper,cementitious material was prepared by firing activated coal gangue under suspension conditions and batching it with limestone powder using Inner Mongolia coal gangue as raw material.The optimal ratio was determined by testing the strength changes of the cementitious material at 3,7,and 28 days of hydration,and the hydration process and mechanism were explored by combining the pore structure,heat of hydration,chemical composition,phase composition,and microscopic morphological characteristics of the hydration products.The results showed that the active materials formulated from activated gangue and limestone powder can be used to prepare cementitious materials with good performance at the level of 30%–50%replacement of cement.The optimal ratio was 30%replacement of cement,and the mass ratio of calcined gangue to limestone powder was 2:1.The 3 days compressive strength of this ratio was 28.8 MPa,which was only slightly lower than that of cement.However,the 28 days compressive strength of samples reached 67.5 MPa,which was much higher than that of the reference cement.In the hydration of this cementitious material,not only does the activated coal gangue react with the Ca(OH)_(2)formed by hydration to form C–S–H gel,but CaCO3 also participates in the reaction to form a new phase of carbon aluminate,and the two effects together promote the development of the later strength of the samples.This paper can provide a reference for carbon reduction in the cement production process and comprehensive utilization of coal gangue.

关键词： Coal gangue carbon reduction hydration suspension calcination

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Wellbore stability model in shale formation under the synergistic effect of stress unloading-hydration

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Petroleum Exploration and Development 2023年第6期50卷 1478-1486页

作者： DING Yi LIU Xiangjun LIANG Lixi XIONG Jian LI Wei WEI Xiaochen DUAN Xi HOU Lianlang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China School of Science Southwest Petroleum UniversityChengdu 610500China

According to the transversely isotropic theory and weak plane criterion, and considering the mechanical damages due to stress unloading and hydration during drilling, a shale wellbore stability model with the influence of stress unloading and hydration was established using triaxial test and shear test. Then, factors influencing the wellbore stability in shale were analyzed. The results indicate that stress unloading occurs during drilling in shale. The larger the confining pressure and axial stress, the more remarkable weakening of shale strength caused by stress unloading. The stress unloading range is positively correlated with the weakening degree of shale strength. Shale with a higher development degree of bedding is more prone to damage along bedding. In this case, during stress unloading, the synergistic effect of weak structural plane and stress unloading happens, leading to a higher weakening degree of shale strength and poorer mechanical stability, which brings a higher risk of wellbore instability. Fluid tends to invade shale through bedding, promoting the shale hydration. hydration also can weaken shale mechanical stability, causing the decline of wellbore stability. Influence of stress unloading on collapse pressure of shale mainly occurs at the early stage of drilling, while the influence of hydration on wellbore stability mainly happens at the late stage of drilling. Bedding, stress unloading and hydration jointly affect the wellbore stability in shale. The presented shale wellbore stability model with the influence of stress unloading and hydration considers the influences of the three factors. Field application demonstrates that the prediction results of the model agree with the actual drilling results, verifying the reliability of the model.

关键词： shale drilling bedding stress unloading hydration shale strength wellbore stability

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hydration-Enhanced Lubricating Electrospun Nanofibrous Membranes Prevent Tissue Adhesion

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Research 2020年第1期2020卷 812-823页

作者： Liang Cheng Yi Wang Guoming Sun Shizhu Wen Lianfu Deng Hongyu Zhang Wenguo Cui Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Shanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of Medicine197 Ruijin 2nd RoadShanghai 200025China State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China College of Chemistry and Environmental Science Hebei UniversityBaoding 071002China Affiliated Hospital of Hebei University Baoding 071000China

Lubrication is the key to efficient function of human tissues and has significant impact on the comfort level.However,the construction of a lubricating nanofibrous membrane has not been reported as yet,especially using a one-step surface modification method.Here,bioinspired by the superlubrication mechanism of articular cartilage,we successfully construct hydration-enhanced lubricating nanofibers via one-step in situ grafting of a copolymer synthesized by dopamine methacrylamide(DMA)and 2-methacryloyloxyethyl phosphorylcholine(MPC)onto electrospun polycaprolactone(PCL)nanofibers.The zwitterionic MPC structure provides the nanofiber surface with hydration lubrication behavior.The coefficient of friction(COF)of the lubricating nanofibrous membrane decreases significantly and is approximately 65%less than that of pure PCL nanofibers,which are easily worn out under friction regardless of hydration.The lubricating nanofibers,however,show favorable wear-resistance performance.Besides,they possess a strong antiadhesion ability of fibroblasts compared with pure PCL nanofibers.The cell density decreases approximately 9-fold,and the cell area decreases approximately 12 times on day 7.Furthermore,the in vivo antitendon adhesion data reveals that the lubricating nanofiber group has a significantly lower adhesion score and a better antitissue adhesion.Altogether,our developed hydration-enhanced lubricating nanofibers show promising applications in the biomedical field such as antiadhesive membranes.

关键词： fibers hydration friction

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