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| 1 | Thermoelectric interface materials:A perspective to the challenge of thermoelectric power generation module显示文摘The past years has observed a significantly boost of the thermoelectric materials in the scale of thermoelectric figure-of-merit,i.e.ZT,because of its promising application to harvest the widely distributed waste heat.However,the simplified thermoelectric materials'performance scale also shifted the focus of thermoelectric energy conversion technique from devices-related efforts to materials-level works.As a result,the thermoelectric devices-related works didn't get enough attention.The device-level challenges behind were kept unknown until recent years.However,besides the thermoelectric materials properties,the practical energy conversion efficiency and service life of thermoelectric device is highly determined by assembling process and the contact interface.In this perspective,we are trying to shine some light on the device-level challenge,and give a special focus on the thermoelectric interface materials(TEiM)between the thermoelectric elements and electrode,which is also known as the metallization layer or solder barrier layer.We will go through the technique concerns that determine the scope of the TEiM,including bonding strength,interfacial resistance and stability.Some general working principles are summarized before the discussion of some typical examples of searching proper TEiM for a given thermoelectric conversion material. | Weishu Liu Shengqiang Bai | 2019 | Journal of Materiomics2019,5,3: | 7 |
| 2 | The Electronic Transport Channel Protection and Tuning in Real Space to Boost the Thermoelectric Performance of Mg_(3+δ)Sb_(2-y)Bi_(y) near Room Temperature显示文摘The optimization of thermoelectric materials involves the decoupling of the transport of electrons and phonons.In this work,an increased Mg_(1)-Mg_(2) distance,together with the carrier conduction network protection,has been shown as an effective strategy to increase the weighted mobility(U=μm∗3/2)and hence thermoelectric power factor of Mg_(3+δ)Sb_(2-y)Bi_(y) family near room temperature.Mg_(3+δ)Sb_(0.5)Bi_(1.5) has a high carrier mobility of 247 cm^(2)V^(-1) s^(-1) and a record power factor of 3470μWm^(-1) K^(-2) at room temperature.Considering both efficiency and power density,Mg_(3+δ)Sb_(1.0)Bi_(1.0) with a high average ZT of 1.13 and an average power factor of 3184μWm^(-1) K^(-2) in the temperature range of 50-250℃ would be a strong candidate to replace the conventional n-type thermoelectric material Bi_(2)Te_(2.7)Se_(0.3).The protection of the transport channel through Mg sublattice means alloying on Sb sublattice has little effect on electron while it significantly reduces phonon thermal conductivity,providing us an approach to decouple electron and phonon transport for better thermoelectric materials. | Zhijia Han Zhigang Gui Y.BZhu Peng Qin Bo-Ping Zhang Wenqing Zhang Li Huang Weishu Liu | 2020 | Research2020,,1: | 5 |
| 3 | Effectiveness of flesh-moistening paste in psoriasis vulgaris patients with symptom pattern of blood stasis:a randomized and parallel-controlled trial显示文摘OBJECTIVE:To evaluate the efficacy and safety of flesh-moistening paste for treating psoriasis vulgaris in patients with blood stasis pattern in terms of Traditional Chinese Medicine(TCM).METHODS:Eudipleural rashes on both the left and right side of the same patients with psoriasis vulgaris,diagnosed via TCM as blood stasis pattern,were selected as the targeted skin lesions.A randomized,double-blind,parallel-controlled,multicenter controlled trial was conducted.The targeted skin lesions were categorized into either the treatment or control group.The treatment group used the flesh-moistening paste;the control group used a placebo.Both the paste and the placebo were topically applied twice daily for eight weeks.The patients were examined biweekly to evaluate the effects.The two groups were compared in terms of the psoriasis area and severity index(PASI)of the targeted skin lesions,which is scored according to erythema,desquamation,infiltration,area,pruritus,and improvement of skin barrier function.Adverse events were recorded during the study period.SPSS 21.0 was used to analyze the data.RESULTS:Fifty-six patients were enrolled between February 2016 and October 2017.Two were complicated by cardio-cerebrovascular disease and were excluded;thus,54 outpatients were finally enrolled in the study.Four dropped out during the study period:three failed to complete their follow-up visits for unknown reasons,and one exited due to an adverse event.The final trial comprised 50 of the 56 originally selected patients,with a 92.6%completion rate.After 8 weeks of treatment,the targeted skin lesion scores differed significantly(P<0.05).The PASI scores of the targeted skin lesions differed significantly beginning at week 6(P<0.05).The treatment group presented better results than those of the control group.Only one patient had an adverse reaction associated with the treatment.Improvements in skin barrier function differed significantly(P<0.05).CONCLUSION:The flesh-moistening paste demonstrated a reliable curative effect and safety for treating psoriasis vulgaris in patients with blood stasis patterns.The topical paste improved the barrier function of the skin lesions. | Guo Xinwei Lang Na Li Guanru Li Ping Qu Jianhua Zhou Dongmei Wang Ping Cang Zhang Deng BingXu Lou Weihai Xu Jingna Lan Haibing Liu Yumin Zhang Weishu Sun Liyun | 2020 | Journal of Traditional Chinese Medicine2020,40,6: | 4 |
| 4 | Numerical Simulation and Optimization of Staged Combustion and NO_x Release Characteristics in Precalciner显示文摘In order to study the combustion characteristics in a precalciner, the temperature and composition field in a typical Trinal-sprayed calciner were numerically analysed. The results obtained by simulation were compared to actual measurements and the simulated results were in good agreement with the measured ones. The results indicated that the aerodynamic flow field in the precalciner is satisfactory, and a symmetrical reflux occurs in the shrinkage zone of the precalciner because of air staging, which can increase the residence time of the solid particles. The temperature distribution in the furnace is uniform, and the average temperature is greater than 1200 K, which can satisfy the conditions for the pulverised coal combustion and raw material decomposition. The mass fraction distribution of oxygen, carbon monoxide, and carbon dioxide in the precalciner is closely related to the temperature distribution. The concentration of nitrogen oxides(NO_x) exhibits a trend of increasing, decreasing and then increasing, and finally tending to a stable level. Within a certain velocity range, the average temperature in the precalciner and the decomposition efficiency of the raw material increase as the flue gas velocity increases. When the flue gas velocity is 24 m/s, the overall performance of the precalciner is optimal. | WANG Weishu LIAO Yihan LIU Jun HUANG Zhihao TIAN Miao | 2019 | Journal of Thermal Science2019,28,5: | 4 |
| 5 | China’s SCI-Indexed Publications: Facts, Feelings, and Future Directions显示文摘Purpose:In relation to the boom in China’s SCI-indexed publications,this opinion piece examines this phenomenon and looks at future possible directions for the reform of China’s research evaluation processes.Design/Approach/Methods:This opinion piece uses bibliographic data for the past decade(2010–2019)from the Science Citation Index Expanded in the Web of Science Core Collection to examine the rise in China’s SCI-indexed publications.Findings:China has surpassed the U.S.and been the largest contributor of SCI publications since 2018.However,while the impact of China’s SCI publications is rising,the scale of this impact still lags behind that of other major contributing countries.China’s SCI publications are also overrepresented in some journals.Originality/Value:Reporting the latest facts about China’s SCI-indexed publications,this article will benefit the reform of China’s research evaluation system. | Weishu Liu | 2020 | ECNU Review of Education2020,3,3: | 3 |
| 6 | Enhanced thermoelectric performances of flexible PEDOT:PSS film by synergistically tuning the ordering structure and oxidation state显示文摘Flexible polymer thermoelectric thin film attracts wide attentions because it is compatible with the wearable electronics and e-skin.Herein,we reported an enhanced thermoelectric power factor of PEDOT:PSS from around 1 μWm^(-1) K^(-2) to 117 μWm^(-1) K^(-2) and high substrate-free strain of 20% through synergistically tuning the ordering structure and the oxidation state.An ionic liquid(EMImTCM)was used to decouple the ionic interaction between PEDOT and PSS,rearranging the morphology of structure that significantly benefit the mechanical flexibility and the electrical conductivity.The addition of Lascorbic acid was confirmed as effective dedoping additive of PEDOT polymer that changed the oxidation state and hence boosted the thermoelectric power factor without notable sacrifice of the mechanical flexibility.Moreover,the electrical conductivity of the corresponding film maintained electrically stable(ΔR/R_(0)<0.12%)under 1000 bending cycles which indicates the great bendability.Our work demonstrated the feasibility to controllably tailor the thermoelectric and mechanical performance of the PEDOT:PSS flexible polymer thermoelectric thin film. | Qikai Li Qing Zhou Long Wen Weishu Liu | 2020 | Journal of Materiomics2020,6,1: | 2 |
| 7 | Transmission electron microscopy study of Pb-depleted disks in PbTe-based alloys显示文摘 | Hengzhi Wang Qinyong Zhang Bo Yu Hui Wang Weishu Liu Gang Chen Zhifeng Ren | 2011 | Journal of Materials Research2011,,7: | 1 |
| 8 | Numerical study on the heat transfer characteristics of supercritical water in enhanced sub-channels in reactors显示文摘 | Wang Weishu Zhang Hongsheng Bi Qincheng Liu Jun | 2010 | Advanced Materials Research2010,,10: | 1 |
| 9 | High-quality Cymbidium mannii genome and multifaceted regulation of crassulacean acid metabolism in epiphytes显示文摘Epiphytes with crassulacean acid metabolism(CAM)photosynthesis are widespread among vascular plants,and repeated evolution of CAM photosynthesis is a key innovation for micro-ecosystem adaptation.However,we lack a complete understanding of the molecular regulation of CAM photosynthesis in epiphytes.Here,we report a high-quality chromosome-level genome assembly of a CAM epiphyte,Cymbidium mannii(Orchidaceae).The 2.88-Gb orchid genome with a contig N50 of 22.7 Mb and 27192 annotated genes was organized into 20 pseudochromosomes,82.8%of which consisted of repetitive elements.Recent expansions of long terminal repeat retrotransposon families have made a major contribution to the evolution of genome size in Cymbidium orchids.We reveal a holistic scenario of molecular regulation of metabolic physiology using high-resolution transcriptomics,proteomics,and metabolomics data collected across a CAM diel cycle.Patterns of rhythmically oscillating metabolites,especially CAM-related products,reveal circadian rhythmicity in metabolite accumulation in epiphytes.Genomewide analysis of transcript and protein level regulation revealed phase shifts during the multifaceted regulation of circadian metabolism.Notably,we observed diurnal expression of several core CAM genes(especially bCA and PPC)that may be involved in temporal fixation of carbon sources.Our study provides a valuable resource for investigating post-transcription and translation scenarios in C.mannii,an Orchidaceae model for understanding the evolution of innovative traits in epiphytes. | Weishu Fan Zheng-Shan He Mengqing Zhe Jing-Qiu Feng Le Zhang Yiwei Huang Fang Liu Jia-Lin Huang Ji-Dong Ya Shi-Bao Zhang Jun-Bo Yang Andan Zhu De-Zhu Li | 2023 | Plant Communications2023,4,5: | 1 |
| 10 | Effect of mixedgrain size on thermoelectric performance of Bi2Te3 compound显示文摘 | ZHAO Lidong ZHANG Boping LIU Weishu | 2009 | Journal of Applied Physics2009,105,02: | 1 |
| 11 | Rapid evolution of T2/S-RNase genes in Fragaria linked to multiple transitions from self-incompatibility to self-compatibility显示文摘The T2/RNase gene family is widespread in eukaryotes,and particular members of this family play critical roles in the gametophytic self-incompatibility(GSI) system in plants.Wild diploid strawberry(Fragaria)species have diversified their sexual systems via self-incompatible and self-compatible traits,yet how these traits evolved in Fragaria remains elusive.By integrating the published and de novo assembled genomes and the newly generated RNA-seq data,members of the RNase T2 gene family were systematically identified in six Fragaria species,including three self-incompatible species(Fragaria nipponica,Fragaria nubicola,and Fragaria viridis) and three self-compatible species(Fragaria nilgerrensis,Fragaria vesca,and Fragaria iinumae).In total,115 RNase T2 genes were identified in the six Fragaria genomes and can be classified into three classes(Ⅰ-Ⅲ) according to phylogenetic analysis.The identified RNase T2 genes could be divided into 22 homologous gene sets according to amino acid sequence similarity and phylogenetic and syntenic relationships.We found that extensive gene loss and pseudogenization coupled with small-scale duplications mainly accounted for variations in the RNase T2 gene numbers in Fragaria.Multiple copies of homologous genes were mainly generated from tandem and segmental duplication events.Furthermore,we newly identified five S-RNase genes in three self-incompatible Fragaria genomes,including two in F.nipponica,two in F.viridis,and one in F.nubicola,which fit for typical features of a pistil determinant,including highly pistil-specific expression,highly polymorphic proteins and alkaline isoelectric point(pI),while no S-RNase genes were found in all three selfcompatible Fragaria species.Surprisingly,these T2/S-RNase genes contain at least one large intron(>10 kb).This study revealed that the rapid evolution of T2/S-RNase genes within the Fragaria genus could be associated with its sexual mode,and repeated evolution of the self-compatible traits in Fragaria was convergent via losses of S-RNase. | Wu Chen Hong Wan Fang Liu Haiyuan Du Chengjun Zhang Weishu Fan Andan Zhu | 2023 | Plant Diversity2023,45,2: | 1 |
| 12 | Recent advances in thermoelectric nanocomposites显示文摘 | Weishu Liu Xiao Yan Gang Chen Zhifeng Ren | 2011 | Nano Energy2011,,1: | 1 |
| 13 | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides显示文摘 | Qian Zhang Qinyong Zhang Shuo Chen Weishu Liu Kevin Lukas Xiao Yan Hengzhi Wang Dezhi Wang Cyril Opeil Gang Chen Zhifeng Ren | 2011 | Nano Energy2011,,1: | 1 |
| 14 | Anionic entanglement-induced giant thermopower in ionic thermoelectric material Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K显示文摘Ionic thermoelectric(i-TE)technologies can power Internet of Things(IoT)sensors by harvesting thermal energy from the environment because of their large thermopowers.Present research focuses mostly on using the interactions between ions and matrices to enhance i-TE performance,but i-TE materials can benefit from utilizing different methods to control ion transport.Here,we introduced a new strategy that employs an ion entanglement effect.A giant thermopower of 28 mV K^(-1)was obtained in a quasi-solid-state i-TE Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K gel via entanglement between CF_(3)SO_(3)^(-)and CH_(3)SO_(3)^(-)anions.The anionic entanglement effect involves complex interactions between these two anions,slowing anionic thermodiffusion and thus suppressing bipolar effects and boosting p-type thermopower.A Au@Cu|Gelatin-CF_(3)SO_(3)K–CH_(3)SO_(3)K|Au@Cu i-TE device with a generator mode delivers a specific output energy density of 67.2 mJ m^(-2)K^(-2)during 2 h of discharging.Long-term operation. | Qikai Li Cheng-Gong Han Shuaihua Wang Cai-Chao Ye Xinbo Zhang Xiao Ma Tao Feng Yuchen Li Weishu Liu | 2023 | eScience2023,3,5: | 0 |
| 15 | Numerical simulation and response analysis of microspherical focused logging in inclined micro-fractured formation显示文摘Tight and unconventional reservoirs have become the focus with the progress of petroleum exploration and development.Micro-fractures in these reservoirs can effectively improve reservoir permeability,and well-developed micro-fractures can serve to directly improve productivity.Compared with the centered electrical well logging method,the Micro Spherical Focused Logging(MSFL)is more suitable for microfracture identification due to its high resolution and near borehole wall measuring method.In this study,an anisotropic model is used to depict micro-fractured formation.First,a forward model with microfractured formation,borehole,logging instrument and surrounding rock is established.Subsequently,MSFL responses under different micro-fracture porosity,resistivity,dip angle and borehole radius,are calculated based on the finite element method(FEM).Finally,the MSFL responses under different microfracture parameters are analyzed with the response laws clarified. | Nan Zeyu Fu Weishu Liu Zhiyuan | 2023 | Energy Geoscience2023,4,2: | 0 |
| 16 | Effectiveness and safety of different amifostine regimens:Preliminary results of a phase Ⅱ multicenter randomized controlled trial显示文摘Objective:The radioprotective effects of amifostine remain uncertain in patients with nasopharyngeal carcinoma(NPC),and adverse effects and cost limit generalization of its classical everyday regimen.This phase II multicenter randomized controlled trial aimed to explore whether amifostine could ameliorate the toxicities of NPC patients in the era of intensity-modulated radiotherapy(IMRT),and to compare different regimens of amifostine on effectiveness and safety.Methods:Patients with stage I–IVB NPC were involved prospectively from January 1st,2013.All patients received radical treatment based on IMRT.After a randomization stratified by their stage,these patients were allocated into 3 groups:the group treated without amifostine,the group treated with the everyday regimen of amifostine,and the group treated with the every-other-day regimen.The 3 groups of patients were compared on radiotherapy-related acute toxicities,treatment effects of NPC,and amifostine-related complications.This trial was registered on the clinicaltrials.gov(ID:NCT01762514).Results:Until August 31st,2017,totally 187 patients completed experimental intervention.Only amifostine of everyday regimen appeared to reduce the patient proportion of mucositis(79.1%vs.96.8%,P=0.002).Hypocalcemia was less common in patients treated without amifostine than in those treated with amifostine(22.6%vs.53.4%vs.41.8%,P=0.002).Neither complete remission rates nor the survivals were affected by amifostine.Conclusions:Amifostine of everyday regimen could reduce mucositis in NPC patients who received IMRT,though it also had the possibility to cause more hypocalcemia. | Hui Chang Wei Yi Xiaohui Wang Yalan Tao Xin Yang Chen Chen Wenwen Zhang Shu Zhou Songran Liu Xiaohui Li Shirong Ding Jing Li Gong Li Xunfan Shao Yimin Liu Weishu Song Yunfei Xia | 2018 | Chinese Journal of Cancer Research2018,30,3: | 0 |
| 17 | A general White–Box strategy for designing thermoelectric cooling system显示文摘Thermoelectric cooling(TEC)is critically important in thermal management of laser modules or chips and potentially for personalized thermoregulation.The formulae for efficiency in standard textbooks can only describe the performance of a TEC module with ideal thermal conditions,that is,fixed terminal temperatures,but are unable to deal with a real TEC system where heat transfer at its interfaces with the heat source and sink are finite and with thermal resistances.Here,we define the TEC system-level performance indices,that is,the maximum cooling power,temperature difference,and coefficient of performance,by introducing a set of explicit formulae.The external heat transfer conditions are taken into account as dimensionless thermal resistance parameters.With these formulae,the TEC system performances are evaluated elegantly with errors well within±5%over broad operating conditions.We further optimize the cooling power and the coefficient of performance in practical scenarios and establish a general White–Box design procedure for TEC systems,which enables a transparent design process and straightforward analysis of performance bottlenecks.A set of cooling experiments are performed to validate the analytical model and to illustrate the dependence of system design on realistic thermal conditions.By choosing the suitable TEC module parameter under given external heat transfer conditions,the cooling power can be improved by more than 100%.This work sheds some light on the integral design of TEC systems for broad applications to take full advantage of the advanced thermoelectric materials in the cooling field. | Kang Zhu Biao Deng Xin Qian Yupeng Wang Huan Li Peng Jiang Ronggui Yang Weishu Liu | 2022 | InfoMat2022,4,11: | 0 |
| 18 | Polaron interfacial entropy as a route to high ther moelectric perfor mance in DAE-doped PEDOT:PSS films显示文摘Enhancing the thermoelectric transport properties of conductive polymer materials has been a long-term challenge,in spite of the success seen with molecular doping strategies.However,the strong coupling between the thermopower and the electrical conductivity limits thermoelectric performance.Here,we use polaron interfacial occupied entropy engineering to break through this intercoupling for a PEDOT:PSS(poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonate))thin film by using photochromic diarylethene(DAE)dopants coupled with UV-light modulation.With a 10-fold enhancement of the thermopower from 13.5μV K^(-1) to 135.4μV K^(-1) and almost unchanged electrical conductivity,the DAE-doped PEDOT:PSS thin film achieved an extremely high power factor of 521.28μW m^(-1) K^(-2) from an original value of 6.78μW m^(-1) K^(-2).The thermopower was positively correlated with the UV-light intensity but decreased with increasing temperature,indicating resonant coupling between the planar closed DAE molecule and PEDOT.Both the experiments and theoretical calculations consistently confirmed the formation of an interface state due to this resonant coupling.Interfacial entropy engineering of polarons could play a critical role in enhancing the thermoelectric performance of the organic film. | Jiajia Zhang Caichao Ye Genwang Wei Liang Guo Yuhang Cai Zhi Li Xinzhi Wu Fangyi Sun Qikai Li Yupeng Wang Huan Li Yuchen Li Shuaihua Wang Wei Xu Xuefeng Guo Wenqing Zhang Weishu Liu | 2024 | National Science Review2024,11,3: | 0 |
| 19 | MAGED4B Promotes Glioma Progression via Inactivation of the TNF-α-induced Apoptotic Pathway by Down-regulating TRIM27 Expression显示文摘MAGED4B belongs to the melanoma-associated antigen family;originally found in melanoma,it is expressed in various types of cancer,and is especially enriched in glioblastoma.However,the functional role and molecular mechanisms of MAGED4B in glioma are still unclear.In this study,we found that the MAGED4B level was higher in glioma tissue than that in non-cancer tissue,and the level was positively correlated with glioma grade,tumor diameter,Ki-67 level,and patient age.The patients with higher levels had a worse prognosis than those with lower MAGED4B levels.In glioma cells,MAGED4B overexpression promoted proliferation,invasion,and migration,as well as decreasing apoptosis and the chemosensitivity to cisplatin and temozolomide.On the contrary,MAGED4B knockdown in glioma cells inhibited proliferation,invasion,and migration,as well as increasing apoptosis and the chemosensitivity to cisplatin and temozolomide.MAGED4B knockdown also inhibited the growth of gliomas implanted into the rat brain.The interaction between MAGED4B and tripartite motif-containing 27(TRIM27)in glioma cells was detected by co-immunoprecipitation assay,which showed that MAGED4B was co-localized with TRIM27.In addition,MAGED4B overexpression down-regulated the TRIM27 protein level,and this was blocked by carbobenzoxyl-L-leucyl-L-leucyl-L-leucine(MG132),an inhibitor of the proteasome.On the contrary,MAGED4B knockdown up-regulated the TRIM27 level.Furthermore,MAGED4B overexpression increased TRIM27 ubiquitination in the presence of MG132.Accordingly,MAGED4B down-regulated the protein levels of genes downstream of ubiquitin-specific protease 7(USP7)involved in the tumor necrosis factor-alpha(TNF-α)-induced apoptotic pathway.These findings indicate that MAGED4B promotes glioma growth via a TRIM27/USP7/receptor-interacting serine/threonine-protein kinase 1(RIP1)-dependent TNF-α-induced apoptotic pathway,which suggests that MAGED4B is a potential target for glioma diagnosis and treatment. | Can Liu Jun Liu Juntang Shao Cheng Huang Xingliang Dai Yujun Shen Weishu Hou Yuxian Shen Yongqiang Yu | 2023 | Neuroscience Bulletin2023,39,2: | 0 |
| 20 | Room-temperature thermoelectric materials: Challenges and a new paradigm显示文摘Room-temperature thermoelectric materials provide promising solutions for energy harvesting from the environment,and deliver a maintenance-free power supply for the internet-of-things(IoTs).The currently available Bi_(2)Te_(3) family discovered in the 1950s,still dominates industrial applications,however,it has serious disadvantages of brittleness and the resource shortage of tellurium(1×10^(-3) ppm in the earth's crust).The novel Mg_(3)Sb_(2) family has received increasing attention as a promising alternative for room-temperature thermoelectric materials.In this review,the development timeline and fabrication strategies of the Mg 3 Sb 2 family are depicted.Moreover,an insightful comparison between the crystal-linity and band structures of Mg_(3)Sb_(2) and Bi_(2)Te_(3) is drawn.An outlook is presented to discuss challenges and new paradigms in designing room-temperature thermoelectric materials. | Zhijia Han Jing-Wei Li Feng Jiang Jiating Xia Bo-Ping Zhang Jing-Feng Li Weishu Liu | 2022 | Journal of Materiomics2022,8,2: | 0 |