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Tailored wrinkles for tunable sensing performance by stereolithography

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Interdisciplinary Materials 2024年第3期3卷 414-424页

作者： Ruiyi Jiang Jie Pu Yuxuan Wang Jipeng chen Gangwen Fu Xue chen Jiayu Yang Jianghua Shen xing Sun Jun Ding Xi Xu Key Laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical UniversityNingboChina Frontiers Science Center for Flexible Electronics Institute of Flexible ElectronicsNorthwestern Polytechnical UniversityXi'anChina Research&Development Institute of Northwestern Polytechnical University in ShenzhenNanshan DistrictShenzhenChina Affiliated Hospital of Nanjing University of Chinese Medicine NanjingChina School of Aeronautics Northwestern Polytechnical UniversityXi'anChina Combustion Internal Flow and Thermal-Structure LaboratorySchool of AstronauticsNorthwestern Polytechnical UniversityXi'anChina Department of Materials Science and Engineering Faculty of EngineeringNational University of SingaporeSingapore

Conducting polymer hydrogel can address the challenges of stricken biocompatibility and ***,conventional conducting polymer hydrogels are often brittle and weak due to the intrinsic quality of the material,which exhibits *** property may cause a delay in sensor response time due to *** overcome these limitations,we have designed a wrinkle morphology three-dimensional(3D)substrate using digital light processing technology and then followed by in situ polymerization to form interpenetrating polymer network *** novel design results in a wrinkle morphology conducting polymer hydrogel elastomer with high precision and geometric freedom,as the size of the wrinkles can be controlled by adjusting the treating *** wrinkle morphology on the conducting polymer hydrogel effectively reduces its viscoelasticity,leading to samples with quick response time,low hysteresis,stable cyclic performance,and remarkable resistance ***,the 3D gradient structure augmented the sensor's sensitivity under minimal stress while exhibiting consistent sensing *** properties indicate the potential of the conducting polymer hydrogel as a flexible sensor.

关键词： 3D printing conducting polymer hydrogel flexible sensor micro-wrinkle structure

Acoustic characterization of hydrate formation and decomposition in clay-bearing sediments

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Petroleum Science 2024年第4期21卷 2830-2838页

作者： Yi-Jian Zhu Xiao-Mei Yang xing Huang Hao Li Xiao-Hui Wang Yi-Fei Sun Peng Xiao Chang-Yu Sun Guang-Jin chen State Key Laboratory of Heavy Oil Processing College of Chemical Engineering and Environment China University of Petroleum

Understanding the acoustic characteristics of hydrates in various sediments is crucial for hydrate resource detection and safe and efficient exploitation, as hydrate occurrence patterns vary greatly in different sediments. In this work, sediments with different bentonite contents, water saturations, and types were prepared to investigate the characteristics of P-wave velocity(reflecting the magnitude of hydrate saturation in the sediment) and amplitude(reflecting the degree of hydrate-sediment cementation) during hydrate formation and depressurization. During hydrate formation, the P-wave velocity and amplitude have similar trends. As clay content increases, the P-wave velocity increase rates quickened. On the other hand, the increased rate of P-wave velocity slows down with the increase of water saturation in the clay-bearing sediments. Comparing various types of sediment shows that the water absorption and swelling of bentonite reduce the pore space, speeding up the cementation of the hydrate with the sediment and increasing P-wave velocity at a faster rate. Correspondence between P-wave velocity and hydrate saturation is strongly related to sediment type, clay content, and water *** rapidly decreasing amplitude in the early stage of hydrate depressurization indicates that hydrate in clay-bearing sediments is weakly cemented to the sediments, which is prone to stratigraphic *** findings of this study offer guidance for hydrate resource assessments in clay-bearing sediments as well as geologic risk estimations during hydrate mining.

关键词： Gas hydrate Bentonite Illite P-wave velocity Amplitude

Advancing Energy Systems with In-Situ and Operando Surface-Enhanced Raman Scattering Spectroscopy

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CCS Chemistry 2024年第6期6卷 1403-1421页

作者： Haoming Bao Shi Xuan Leong Jaslyn Ru Ting chen Zhenhai Shi Suli chen Yan Lv Tianxi Liu In Yee Phang xing Yi Ling Key Laboratory of Synthetic and Biological Colloids Ministry of EducationInternational Joint Research Laboratory for Nano Energy CompositesSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122 School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingapore 637371

Surface-enhanced Raman scattering spectroscopy(SERS)has emerged as a powerful analytical technique to enable nanoscale investigations of energy *** mini-review focuses on the applications of in-situ and operando SERS in energy-related research,highlighting its unique capabilities and significant contributions to understanding energy storage and conversion *** first introduce the fundamental principles of SERS,key SERS-derived techniques,and commonly employed ***,we delve into the diverse applications of in-situ and operando SERS across various energy systems,encompassing photocatalytic and electrocatalytic systems,fuel cells,solar cells,and ***,we conclude with our perspective on the current challenges and prospects in this *** hope thismini-review serves as an essential overview to guide the design and implementation of in-situ and operando SERS studies of energy systems.

关键词： surface-enhanced Raman scattering spectroscopy in-situ operando energy systems photocatalysis electrocatalysis fuel cells solar cells batteries

The water-soluble TF3 component from Eupolyphaga sinensis Walker promotes tibial fracture healing in rats by promoting osteoblast proliferation and angiogenesis

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Journal of Traditional Chinese Medical Sciences 2024年第2期11卷 245-254页

作者： Binghao Shao xing chen Jin'ge Du Shuang Zou Zhaolong chen Jing Wang Huaying Jiang Ruifang Lu Wenlan Wang Chunmei Wang School of Life Sciences Beijing University of Chinese MedicineBeijing102488China School of Materia Medica Beijing University of Chinese MedicineBeijing102488China King's British Heart Foundation Center School of Cardiovascular and Metabolic Medicine and SciencesLondonSE59NUUK

Objective To determine the active components of Eupolyphaga sinensis Walker(Tu Bie Chong)and explore the mechanisms underlying its fracture-healing *** A modified Einhorn method was used to develop a rat tibial fracture *** of bone healing was assessed using radiological *** O/fast green and CD31 immunohistochemical staining were performed to evaluate the growth of bone cells and angiogenesis at the fracture *** blue and wound healing assays were used to analyze cell viability and *** Transwell assay was used to explore the invasion capacity of the *** formation assays were used to assess the angiogenesis capacity of human vascular endothelial cells(HUVECs).qRT-PCR was used to evaluate the changes in gene transcription *** Tu Bie Chong fraction 3(TF3)significantly shortened the fracture healing time in model rats.X-ray results showed that on day 14,fracture healing in the TF3 treatment group was significantly better than that in the control group(P=.0086).Tissue staining showed that cartilage growth and the number of H-shaped blood vessels at the fracture site of the TF3 treatment group were better than those of the control *** vitro,TF3 significantly promoted the proliferation and wound healing of MC3T3-E1s and HUVECs(all P2.and COL2A1 were significantly elevated following TF3 *** TF3 promotes fracture healing by promoting bone regeneration associated with the RUNX2 pathway and angiogenesis associated with the VEGFA pathway.

关键词： Tu Bie Chong Water-solube component Fracture Rats Osteoblast Angiogenesis

Ten-year observation of corneal densitometry and associated factors following small incision lenticule extraction

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 485-490页

作者： Xiao-Song Han Fei Xia Zhuo-Yi chen Pei-Jun Yao Dong-Mei Yang Jing Zhao xing-Tao Zhou Eye Institute and Department of Ophthalmology Eye&ENT HospitalFudan UniversityShanghai 200031China NHC Key Laboratory of Myopia(Fudan University) Key Laboratory of MyopiaChinese Academy of Medical SciencesShanghai 200031China Shanghai Research Center of Ophthalmology and Optometry Shanghai 200031China Shanghai Engineering Research Center of Laser and Autostereoscopic 3D for Vision Care(20DZ2255000) Shanghai 200031China

●AIM:To investigate the long-term changes of corneal densitometry(CD)and its contributing elements after small incision lenticule extraction(SMILE).●METHODS:Totally 31 eyes of 31 patients with mean spherical equivalent of-6.46±1.50 D and mean age 28.23±7.38y were ***-scale examinations were conducted on all patients preoperatively and during *** acuity,manifest refraction,axial length,corneal thickness,corneal higher-order aberrations,and CD were evaluated.●RESULTS:All surgeries were completed successfully without complications or adverse ***-year safety index was 1.17±0.20 and efficacy 1.04±*** value of 0–6 mm zones in central layer was statistically significantly lower 10y postoperatively,compared with preoperative values(0–2 mmΔ=-1.62,2–6 mmΔ=-1.24,P<0.01).There were no correlations between CD values and factors evaluated.●CONCLUSION:SMILE is a safe and efficient procedure for myopia on a long-term *** values get lower 10y postoperatively,whose mechanism is to be further discussed.

关键词： myopia small incision lenticule extraction corneal densitometry

Imbalance of Circulating Follicular Regulatory and Follicular Helper T Cell Subpopulations Is Associated with Disease Progression and Serum CYFRA 21-1 Levels in Patients with Non-small Cell Lung Cancer

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Current Medical Science 2024年第1期44卷 102-109页

作者： Tian-ci LIU Mo-han ZHENG xing-yue ZENG Rui KANG Ayibaota Bahabayi Bulidierxin Tuerhanbayi Song-song LU chen LIU Department of Clinical Laboratory Peking University People's HospitalBeijing 100044China School of Basic Medical Sciences Peking University Health Science CenterBeijing 100191China

Objective This study aimed to investigate the changes of follicular helper T(TFH)and follicular regulatory T(TFR)cell subpopulations in patients with non-small cell lung cancer(NSCLC)and their *** Peripheral blood was collected from 58 NSCLC patients at different stages and 38 healthy *** cytometry was used to detect TFH cell subpopulation based on programmed death 1(PD-1)and inducible co-stimulator(ICOS),and TFR cell subpopulation based on cluster determinant 45RA(CD45RA)and forkhead box protein P3(FoxP3).The levels of interleukin-10(IL-10),interleukin-17a(IL-17a),interleukin-21(IL-21),and transforming growth factor-β(TGF-β)in the plasma were measured,and changes in circulating B cell subsets and plasma IgG levels were also *** correlation between serum cytokeratin fragment antigen 21-1(CYFRA 21-1)levels and TFH,TFR,or B cell subpopulations was further *** The TFR/TFH ratio increased significantly in NSCLC *** CD45RA^(+)FoxP3^(int) TFR subsets were increased,with their proportions increasing in stages Ⅱ to Ⅲ and decreasing in stage ***-1^(+)ICOS+TFH cells showed a downward trend with increasing *** IL-21 and TGF-β concentrations were increased in NSCLC patients compared with healthy ***,plasma IgG levels,and CD45RA^(+)FoxP3^(int) TFR cells showed similar *** numbers and plasmablasts were positively correlated with CYFRA 21-1 in stages Ⅰ-Ⅲ and negatively correlated with CYFRA 21-1 in stage *** Circulating TFH and TFR cell subpopulations and plasmablasts dynamically change in different stages of NSCLC,which is associated with serum CYFRA 21-1 levels and reflects disease progression.

关键词： non-small cell lung cancer follicular helper T cells follicular regulatory T cells progression

Theoretical Exploration of Alloying Effects on Stabilities and Mechanical Properties ofγʹPhase in Novel Co–Al–Nb-Base Superalloys

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1238-1248页

作者： Guan-cheng Gu Zhao-Jing Han Ze-Yu chen Zhao-Xuan Li Sheng-Bao Xia Zheng-Ning Li Hua Jin Wei-Wei Xu xing-Jun Liu Shenzhen Research Institute of Xiamen University School of Aerospace EngineeringXiamen UniversityXiamen361005China Institute of Materials Genome and Big Data Harbin Institute of TechnologyShenzhen518055China

The new developedγ/γʹCo–Al–Nb-base alloys show great potentials as high-temperature ***,finding appropriate compositions to improve performance of alloys still poses a great challenge to the development of Co–Al–Nb-base *** by the lack of alloying effects on fundamental properties of criticalγʹphase,we systematically performed a theoretical investigation on the effect of alloying elements TM(TM:Ti,V,Cr,Zr,Mo,Ta,W,Re,and Ru)on phase stabilities and mechanical properties of L1_(2)-typeγʹ(Co,Ni)_(3)(Al,Nb).By analyzing the stability ofγʹphase with respect to its competitive B2.and D0_(19) phases,the results shown that Ti,V,and Cr enhance the L1_(2) stability and widen the L1_(2)–D0_(19) energy barrier,in which V yields the maximum *** analysis of electronic structure indicated that the alternation of valence electrons at fermi level would be the atomic origin for doping TM inγʹ*** calculated results of mechanical properties shown that V and Cr are expected to be optimal dopant for enhancing the strength and the ductility ofγʹ*** addition of Ta is also beneficial for enhancing the strength at the slight expense of ductility ofγʹ*** drawing the mechanical maps,the preferred composition range for the phases with desired properties is roughly demarcated in theory for the multi-addition of V/Cr and V/Ta inγʹ*** findings would be useful for optimizing the performance of novelγ/γʹCo–Al–Nb-base superalloys.

关键词： Co-Al-Nb-base superalloys γ/γʹdual-phase Phase stability Mechanical properties First-principle methods

Clinical characteristics of postoperative necrotizing enterocolitis in patients with congenital jejunoileal atresia and its risk factors

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World Journal of Pediatric Surgery 2024年第1期7卷 42-46页

作者： Xiaofeng Xiong Wei Lu Fuzhong xing Yuan Cai Jixin Yang Yuhang Yuan Jiexiong Feng Xuyong chen Department of Pediatric Surgery Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Department of Neonate Surgery Wuhan Children's HospitalHuazhong University of Science and TechnologyWuhanHubeiChina Department of Pediatric Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina

Objective To review postoperative necrotizing enterocolitis(NEC)in patients with jejunoileal atresia(JIA)and to explore the potential risk factors related to the concurrence *** Patients diagnosed with JIA who received surgical treatment from January 2016 to June 2021 were ***,viral infection of the fetus,transfusion within 48 hours before NEC,sepsis before JIA repair,pathological and anatomical classification of JIA,combined malformation,occurrence time of NEC after the operation,treatment,and prognosis of patients were *** were divided into NEC group and non-NEC group,and all patients were followed up for 3-6 months to observe for *** A total of 180 patients with JIA were included,of whom 12 were diagnosed with NEC after surgery and 1 patient with NEC died during *** average age,birth weight,gestational age,proportion of premature infants,proportion of preoperative infections,and pathological classification of JIA did not significantly differ between the two *** probability of patients with proximal jejunal atresia(PJA)in the NEC group(58.3%)was higher than that in the non-NEC group(22.6%)(p=0.011),and patients with PJA had longer parenteral nutrition time than patients without PJA(26.64±9.21 days vs 15.11±6.58 days,p<0.001).Conclusion PJA was more likely to be associated with concurrent NEC after surgery,which is a highly NEC-related risk factor inherent in JIA.

关键词： patients postoperative transfusion

Roles of concentration-dependent Cu doping behaviors on the thermoelectric properties of n-type Mg_(3)Sb_(1.5)Bi_(0.5)

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Journal of Materiomics 2024年第1期10卷 154-162页

作者： Xinxin Yang Heng Ni Xiaotong Yu Biao Cao Juanjuan xing Qiyong chen Lili Xi Jiandang Liu Jiye Zhang Kai Guo Jing-Tai Zhao School of Materials Science and Engineering Shanghai University99 Shangda RoadShanghai200444China Materials Genome Institute Shanghai University99 Shangda RoadShanghai200444China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefeiAnhui230026China School of Physics and Materials Science Guangzhou UniversityGuangzhou510006China Research Center for Advanced Information Materials(CAIM) Huangpu Research&Graduate School of Guangzhou UniversitySino-Singapore Guangzhou Knowledge CityHuangpu DistrictGuangzhou510555China Key Lab of Si-based Information Materials&Devices and Integrated Circuits Design Department of Education of Guangdong ProvinceChina School of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin541004China Guangxi Key Laboratory of Information Materials Guilin University of Electronic TechnologyGuilin541004China

Large Seebeck coefficients induced by high degeneracy of conduction band minimum,and low intrinsic lattice thermal conductivity originated from large lattice vibrational anharmonicity render Mg_(3)Sb_(2.as a promising n-type thermoelectric ***,we demonstrated unique concentration-dependent occupation behaviors of Cu in Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)matrix,evidenced by structural characterization and transport property *** is found that Cu atoms prefer to enter the interstitial lattice sites in Mg_(3)Sb_(2)host with low doping level(Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)+x%Cu,x2.3×10^(4)S/m at 300 K,increasing by 300%compared with that of the pristine *** figure of merit zT values in the whole measured temperature range are significantly improved by the synergetic improvement of power factor and reduction of thermal *** average zT∼1.07 from 323 K to 773 K has been achieved for the Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01)+0.3%Cu sample,which is about 30%higher than that of the Mg_(3.4)Sb_(1.5)Bi_(0.49)Te_(0.01) sample.

关键词： Mg_(3)Sb_(2) Cu doping Concentration-dependent occupation Thermoelectric properties Average zT