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Cancer Therapy with Phytochemicals: Present and Future Perspectives 被引量:3
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作者 Muobarak J.Tuorkey 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2015年第11期808-819,共12页
Recently, a wide range of food-derived phytochemical compounds and their synthetic derivatives have been proposed for cancer treatment. Unfortunately, data available in related literature focus on the anti-cancer prop... Recently, a wide range of food-derived phytochemical compounds and their synthetic derivatives have been proposed for cancer treatment. Unfortunately, data available in related literature focus on the anti-cancer properties of compounds derived from edible plants, while very little is known about those derived from non-edible plants. And thus, the underlying mechanisms of their anti-cancer effects are yet to be elucidated. This review collates the available data on the anti-cancer activities of six phytochemical-derived compounds from edible and non-edible plants, i.e. 展开更多
关键词 CELL Cancer Therapy with Phytochemicals Present and future perspectives NF
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Therapeutic strategies for gastroenteropancreatic neuroendocrine neoplasms: State-of-the-art and future perspectives 被引量:1
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作者 Elettra Merola Andrea Michielan +7 位作者 Umberto Rozzanigo Marco Erini Sandro Sferrazza Stefano Marcucci Chiara Sartori Chiara Trentin Giovanni de Pretis Franca Chierichetti 《World Journal of Gastrointestinal Surgery》 SCIE 2022年第2期78-106,共29页
Although gastroenteropancreatic neuroendocrine neoplasms(GEP-NENs)have always been considered rare tumors,their incidence has risen over the past few decades.They represent a highly heterogeneous group of neoplasms wi... Although gastroenteropancreatic neuroendocrine neoplasms(GEP-NENs)have always been considered rare tumors,their incidence has risen over the past few decades.They represent a highly heterogeneous group of neoplasms with several prognostic factors,including disease stage,proliferative index(Ki67),and tumor differentiation.Most of these neoplasms express somatostatin receptors on the cell surface,a feature that has important implications in terms of prognosis,diagnosis,and therapy.Although International Guidelines propose algorithms aimed at guiding therapeutic strategies,GEP-NEN patients are still very different from one another,and the need for personalized treatment continues to increase.Radical surgery is always the best option when feasible;however,up to 80%of cases are metastatic upon diagnosis.Regarding medical treatments,as GEP-NENs are characterized by relatively long overall survival,multiple therapy lines are adopted during the lifetime of these patients,but the optimum sequence to be followed has never been clearly defined.Furthermore,although new molecular markers aimed at predicting the response to therapy,as well as prognostic scores,are currently being studied,their application is still far from being part of daily clinical practice.As they represent a complex disease,with therapeutic protocols that are not completely standardized,GEP-NENs require a multidisciplinary approach.This review will provide an overview of the available therapeutic options for GEP-NENs and attempts to clarify the possible approaches for the management of these patients and to discuss future perspectives in this field. 展开更多
关键词 Gastroenteropancreatic neuroendocrine neoplasms Therapeutic strategies Radical surgery Medical treatments OVERVIEW future perspectives
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Optical coherence tomography angiography of the optic nerve head, current situation and future perspective
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作者 Khalil Ghasemi Falavarjani Srinivas R.Sadda 《Eye Science》 CAS 2016年第3期124-126,共3页
The circulation of the optic nerve head is derived from two sources;the prelaminar,laminar and retrolaminar circulation are mainly arise from the posterior ciliary artery circulation,whereas the nerve fiber layer over... The circulation of the optic nerve head is derived from two sources;the prelaminar,laminar and retrolaminar circulation are mainly arise from the posterior ciliary artery circulation,whereas the nerve fiber layer over the optic disc is fed by central retinal artery(1,2).A variety of optic neuropathies with ischemic,glaucomatous,inflammatory and hereditary etiologies may affect the 展开更多
关键词 WANG current situation and future perspective Optical coherence tomography angiography of the optic nerve head
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3D printing for ultra-precision machining:current status,opportunities,and future perspectives
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作者 Tao HE Wai Sze YIP +9 位作者 Edward Hengzhou YAN Jiuxing TANG Muhammad REHAN Long TENG Chi Ho WONG Linhe SUN Baolong ZHANG Feng GUO Shaohe ZHANG Suet TO 《Frontiers of Mechanical Engineering》 SCIE CSCD 2024年第4期1-28,共28页
Additive manufacturing,particularly 3D printing,has revolutionized the manufacturing industry by allowing the production of complex and intricate parts at a lower cost and with greater efficiency.However,3D-printed pa... Additive manufacturing,particularly 3D printing,has revolutionized the manufacturing industry by allowing the production of complex and intricate parts at a lower cost and with greater efficiency.However,3D-printed parts frequently require post-processing or integration with other machining technologies to achieve the desired surface finish,accuracy,and mechanical properties.Ultra-precision machining(UPM)is a potential machining technology that addresses these challenges by enabling high surface quality,accuracy,and repeatability in 3D-printed components.This study provides an overview of the current state of UPM for 3D printing,including the current UPM and 3D printing stages,and the application of UPM to 3D printing.Following the presentation of current stage perspectives,this study presents a detailed discussion of the benefits of combining UPM with 3D printing and the opportunities for leveraging UPM on 3D printing or supporting each other.In particular,future opportunities focus on cutting tools manufactured via 3D printing for UPM,UPM of 3D-printed components for real-world applications,and post-machining of 3D-printed components.Finally,future prospects for integrating the two advanced manufacturing technologies into potential industries are discussed.This study concludes that UPM is a promising technology for 3D-printed components,exhibiting the potential to improve the functionality and performance of 3D-printed products in various applications.It also discusses how UPM and 3D printing can complement each other. 展开更多
关键词 ultra-precision machining 3D printing additive manufacturing future perspectives start-of-the-art-review
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Building on the backbone of CD47-based therapy in cancer:Combination strategies,mechanisms,and future perspectives 被引量:3
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作者 Zi-Han Ye Wei-Bang Yu +2 位作者 Mu-Yang Huang Jun Chen Jin-Jian Lu 《Acta Pharmaceutica Sinica B》 SCIE CAS CSCD 2023年第4期1467-1487,共21页
Described as a“don't eat me”signal,CD47 becomes a vital immune checkpoint in cancer.Its interaction with signal regulatory protein alpha(SIRPa)prevents macrophage phagocytosis.In recent years,a growing body of e... Described as a“don't eat me”signal,CD47 becomes a vital immune checkpoint in cancer.Its interaction with signal regulatory protein alpha(SIRPa)prevents macrophage phagocytosis.In recent years,a growing body of evidences have unveiled that CD47-based combination therapy exhibits a superior anti-cancer effect.Latest clinical trials about CD47 have adopted the regimen of collaborating with other therapies or developing CD47-directed bispecific antibodies,indicating the combination strategy as a general trend of the future.In this review,clinical and preclinical cases about the current combination strategies targeting CD47 are collected,their underlying mechanisms of action are discussed,and ideas from future perspectives are shared. 展开更多
关键词 CD47 Combination strategies Bispecific antibodies Clinical data Preclinical data CANCER MECHANISMS future perspectives
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Design and construction of super-long span bridges in China: Review and future perspectives 被引量:10
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作者 Wei HUANG Minshan PET +1 位作者 Xiaodong LIU Ya WEI 《Frontiers of Structural and Civil Engineering》 SCIE EI CSCD 2020年第4期803-838,共36页
Super-long span bridges demand high design requirements and involve many difficulties when constructed,which is an important indicator to reflect the bridge technical level of a country.Over the past three decades,a l... Super-long span bridges demand high design requirements and involve many difficulties when constructed,which is an important indicator to reflect the bridge technical level of a country.Over the past three decades,a large percentage of the new long-span bridges around the world were built in China,and thus,abundant technological innovations and experience have been accumulated during the design and construction.This paper aims to review and summarize the design and construction practices of the superstructure,the substructure,and the steel deck paving of the long-span bridges during the past decades as well as the current operation status of the existing long-span bridges in China.A future perspective was given on the developing trend of high-speed railway bridge,bridge over deep-sea,health monitoring and maintenance,intellectualization,standard system,and information technology,which is expected to guide the development direction for the construction of future super long-span bridges and promote China to become a strong bridge construction country. 展开更多
关键词 long-span bridges steel box girder design technology construction technology review and future perspectives
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Few-layer MoS2 saturable absorbers for short-pulse laser technology: current status and future perspectives [Invited] 被引量:11
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作者 R.I.Woodward R.C.T.Howe +4 位作者 G.Hu F.Torrisi M.Zhang T.Hasan E.J.R.Kelleher 《Photonics Research》 SCIE EI 2015年第2期30-42,共13页
Few-layer molybdenum disulfide(MoS2) is emerging as a promising quasi-two-dimensional material for photonics and optoelectronics, further extending the library of suitable layered nanomaterials with exceptional opti... Few-layer molybdenum disulfide(MoS2) is emerging as a promising quasi-two-dimensional material for photonics and optoelectronics, further extending the library of suitable layered nanomaterials with exceptional optical properties for use in saturable absorber devices that enable short-pulse generation in laser systems. In this work, we catalog and review the nonlinear optical properties of few-layer MoS2, summarize recent progress in processing and integration into saturable absorber devices, and comment on the current status and future perspectives of MoS2-based pulsed lasers. 展开更多
关键词 MO current status and future perspectives Invited Few-layer MoS2 saturable absorbers for short-pulse laser technology
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Future of Percutaneous Coronapy Intervention From an Asian Perspective
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作者 Yean-Leng LIM 《South China Journal of Cardiology》 CAS 2002年第1期1-3,共3页
关键词 future of Percutaneous Coronapy Intervention From an Asian perspective
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Pediatric stricturing Crohn's disease
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作者 Alessandro Boscarelli Matteo Bramuzzo 《World Journal of Gastroenterology》 SCIE CAS 2024年第12期1651-1654,共4页
Crohn’s disease(CD)is a chronic inflammatory disease of the digestive tract.The incidence of pediatric CD is increasing and is currently 2.5-11.4 per 100000 world-wide.Notably,approximately 25%of children with CD dev... Crohn’s disease(CD)is a chronic inflammatory disease of the digestive tract.The incidence of pediatric CD is increasing and is currently 2.5-11.4 per 100000 world-wide.Notably,approximately 25%of children with CD develop stricturing CD(SCD)that requires intervention.Symptomatic stricturing diseases refractory to pharmacological management frequently require non-pharmacological interventions.Non-pharmacological therapeutic strategies include endoscopic balloon dilatation,stricturoplasty,and surgical resection of the strictured seg-ment.However,strictures tend to recur postoperatively regardless of treatment modality.The lifetime risk of surgery in patients with childhood SCD remains at 50%-90%.Thus,new and emerging strategies,advanced diagnostic tools,and minimally invasive approaches are under investigation to improve the outcomes and overall quality of life of pediatric patients with SCD. 展开更多
关键词 Stricturing Crohn’s disease PEDIATRICS INSIGHTS future perspectives
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Latest updates on structure and recommendations of cardiac rehabilitation programs in chronic heart failure
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作者 Christos Kourek Alexandros Briasoulis +2 位作者 Dimitrios E Magouliotis John Skoularigis Andrew Xanthopoulos 《World Journal of Clinical Cases》 SCIE 2024年第8期1382-1387,共6页
Chronic heart failure(HF)is a clinical syndrome with high morbidity and mor-tality worldwide.Cardiac rehabilitation(CR)is a medically supervised program designed to maintain or improve cardiovascular health of people ... Chronic heart failure(HF)is a clinical syndrome with high morbidity and mor-tality worldwide.Cardiac rehabilitation(CR)is a medically supervised program designed to maintain or improve cardiovascular health of people living with HF,recommended by both American and European guidelines.A CR program con-sists of a multispecialty group including physicians,nurses,physiotherapists,trainers,nutritionists,and psychologists with the common purpose of improving functional capacity and quality of life of chronic HF patients.Physical activity,lifestyle,and psychological support are core components of a successful CR program.CR has been shown to be beneficial in all ejection fraction categories in HF and most patients,who are stable under medication,are capable of participating.An individualized exercise prescription should be developed on the basis of a baseline evaluation in all patients.The main modalities of exercise training are aerobic exercise and muscle strength training of different intensity and frequency.It is important to set the appropriate clinical outcomes from the beginning,in order to assess the effectiveness of a CR program.There are still significant limitations that prevent patients from participating in these programs and need to be solved.A significant limitation is the generally low quality of research in CR and the presence of negative trials,such as the rehabilitation after myocardial infarction trial,where comprehensive rehabilitation following myocardial infraction had no important effect on mortality,morbidity,risk factors,or health-related quality of life or activity.In the present editorial,we present all the updated knowledge and recommendations in CR programs. 展开更多
关键词 Cardiac rehabilitation Heart failure Outcomes Exercise protocols PRESCRIPTION future perspectives LIMITATIONS
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Is it possible to foot reflexology for infants with sensorineural hearing loss?
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作者 Min Ai Hang-Hang Zhang +3 位作者 Jun-Bang Feng Chuan-Ming Li Wen-Jing Wang Meng-Die Hu 《World Journal of Clinical Cases》 SCIE 2025年第2期1-4,共4页
Foot reflexology is a non-invasive and safe complementary therapy that works by massaging the reflex zones of the feet and exerts systemic or whole-body regulation through meridian nerve conduction.This therapy is com... Foot reflexology is a non-invasive and safe complementary therapy that works by massaging the reflex zones of the feet and exerts systemic or whole-body regulation through meridian nerve conduction.This therapy is commonly used in the treatment of various conditions such as autism and Parkinson's disease.However,there is limited reporting on the use of foot reflexology therapy for infants with sensorineural hearing loss(SNHL).Currently,there is no definitive conclusion on how foot reflexology therapy can influence hearing.This editorial holds some guiding significance regarding this clinical issue.The aim is to present physiological evidence of how foot reflexology therapy can impact infants with SNHL,thereby enhancing clinician’s awareness of foot reflexology in treating infants with SNHL. 展开更多
关键词 Foot reflexology Sensorineural Hearing Loss future perspectives LIMITATIONS Neural conduction
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Artificial intelligence for early detection of pancreatic adenocarcinoma: The future is promising 被引量:2
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作者 Antonio Mendoza Ladd David L Diehl 《World Journal of Gastroenterology》 SCIE CAS 2021年第13期1283-1295,共13页
Pancreatic ductal adenocarcinoma(PDAC) is a worldwide public health concern. Despite extensive research efforts toward improving diagnosis and treatment, the 5-year survival rate at best is approximately 15%. This dis... Pancreatic ductal adenocarcinoma(PDAC) is a worldwide public health concern. Despite extensive research efforts toward improving diagnosis and treatment, the 5-year survival rate at best is approximately 15%. This dismal figure can be attributed to a variety of factors including lack of adequate screening methods, late symptom onset, and treatment resistance. Pancreatic ductal adenocarcinoma remains a grim diagnosis with a high mortality rate and a significant psychological burden for patients and their families. In recent years artificial intelligence(AI) has permeated the medical field at an accelerated pace, bringing potential new tools that carry the promise of improving diagnosis and treatment of a variety of diseases. In this review we will summarize the landscape of AI in diagnosis and treatment of PDAC. 展开更多
关键词 Pancreatic adenocarcinoma Artificial intelligence Neural network future perspectives Early diagnosis Improved performance
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Progress and prospects of mining with backfill in metal mines in China 被引量:5
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作者 Gaili Xue Erol Yilmaz Yongding Wang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2023年第8期1455-1473,共19页
Mining is the foundation of modern industrial development.In the context of the“carbon peaking and carbon neutrality”era,countries have put forward the development strategy of“adhering to the harmonious coexistence... Mining is the foundation of modern industrial development.In the context of the“carbon peaking and carbon neutrality”era,countries have put forward the development strategy of“adhering to the harmonious coexistence of humans and nature.”The ongoing progress and improvement of filling mining technology have provided significant advantages,such as“green mining,safe,efficient,and low-carbon emission,”which is crucial to the comprehensive utilization of mining solid waste,environmental protection,and safety of re-mining.This review paper describes the development history of metal mine filling mining in China and the characteristics of each stage.The excitation mechanism and current research status of producing cementitious materials from blast furnace slag and other industrial wastes are then presented,and the concept of developing cementitious materials for backfill based on the whole solid waste is proposed.The advances in the mechanical characteristics of cemented backfill are elaborated on four typical levels:static mechanics,dynamic mechanics,mechanical influencing factors,and multi-scale mechanics.The working/rheological characteristics of the filling slurry are presented,given the importance of the filling materials conveying process.Finally,the future perspectives of mining with backfill are discussed based on the features of modern filling concepts to provide the necessary theoretical research value for filling mining. 展开更多
关键词 mining with backfill cementitious materials mechanical characteristics slurry properties future perspectives
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Magnesium-based biomaterials as emerging agents for bone repair and regeneration:from mechanism to application 被引量:19
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作者 Hang Zhou Bing Liang +2 位作者 Haitao Jiang Zhongliang Deng Kexiao Yu 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2021年第3期779-804,共26页
Magnesium(Mg)is the fourth most abundant element in the human body and is important in terms of specific osteogenesis functions.Here,we provide a comprehensive review of the use of magnesium-based biomaterials(MBs)in ... Magnesium(Mg)is the fourth most abundant element in the human body and is important in terms of specific osteogenesis functions.Here,we provide a comprehensive review of the use of magnesium-based biomaterials(MBs)in bone reconstruction.We review the history of MBs and their excellent biocompatibility,biodegradability and osteopromotive properties,highlighting them as candidates for a new generation of biodegradable orthopedic implants.In particular,the results reported in the field-specific literature(280 articles)in recent decades are dissected with respect to the extensive variety of MBs for orthopedic applications,including Mg/Mg alloys,bioglasses,bioceramics,and polymer materials.We also summarize the osteogenic mechanism of MBs,including a detailed section on the physiological process,namely,the enhanced osteogenesis,promotion of osteoblast adhesion and motility,immunomodulation,and enhanced angiogenesis.Moreover,the merits and limitations of current bone grafts and substitutes are compared.The objective of this review is to reveal the strong potential of MBs for their use as agents in bone repair and regeneration and to highlight issues that impede their clinical translation.Finally,the development and challenges of MBs for transplanted orthopedic materials are discussed. 展开更多
关键词 Magnesium-based biomaterials Bone reconstruction Orthopedic applications future perspectives Clinical transformation
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PERSPECTIVES ON FUTURE EFL COMMUNICATIVE ENVIRONMENTS BY E-MAlL AND INTERNET IN CHINESE UNIVERSITIES 被引量:2
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作者 Wang Qi Northwest Normal University 《Chinese Journal of Applied Linguistics》 2000年第4期10-14,共5页
E-mail-assisted language teaching is at the fore-front of the advances in educational tools in EFLteaching.But is it possible to create EFL communica-tive environment by E-mail and Internet in Chineseuniversities?Can ... E-mail-assisted language teaching is at the fore-front of the advances in educational tools in EFLteaching.But is it possible to create EFL communica-tive environment by E-mail and Internet in Chineseuniversities?Can we totally adopt CA by E-mail andInternet in Western countries into Chinese universi-ties?It is evident that Completely transferring it toChinese educational context is irrational and will ulti-mately fail.Thus,success depends on reconciling E-mail-assisted EFL teaching with traditional Chineseapproaches.This paper is designed to make perspec-tives on this reconciliation,and presents some disad-vantages of using E-mail and Internet in teaching. 展开更多
关键词 EFL In perspectiveS ON future EFL COMMUNICATIVE ENVIRONMENTS BY E-MAlL AND INTERNET IN CHINESE UNIVERSITIES
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Recent antibacterial agents from biomass derivatives:Characteristics and applications 被引量:1
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作者 Nissa Nurfajrin Solihat Alif Faturahman Hidayat +11 位作者 R.A.Ilyas Senthil Muthu Kumar Thiagamani Nur Izyan Wan Azeele Fahriya Puspita Sari Maya Ismayati Mohammad Irfan Bakshi Zaharaddeen N.Garba M.Hazwan Hussin Witta Kartika Restu Wasrin Syafii Harits Atika Ariyanta Widya Fatriasari 《Journal of Bioresources and Bioproducts》 EI CSCD 2024年第3期283-309,共27页
Enhancing awareness of personal cleanliness and antibacterial resistance has intensified the antibacterial substance request on consumable products. Antibacterial agents that have been commercialized nowadays are prod... Enhancing awareness of personal cleanliness and antibacterial resistance has intensified the antibacterial substance request on consumable products. Antibacterial agents that have been commercialized nowadays are produced from inorganic and non-renewable substances. This provides several drawbacks, particularly against health and environmental issues. Therefore, many scientists work on substituting fossil-fuel-based antibacterial agents with natural ones such as from biomass. Biomass derivatives, natural abundances of biopolymers in the world, amount to major compounds including polysaccharides (cellulose, hemicellulose, and chitosan) and polyphenol (tannin and lignin) substances which are capable to combat the growth of Gram-positive bacteria and Gram-negative bacteria. To date, no report focuses on a deep understanding of antibacterial properties derived from biomass and the internal and external factors effects. This work provides that gap because comprehensive knowledge is necessary before applying biomass to the products. The potency of biomass derivatives as antibacterial additives is also summarized. Basic knowledge of antibacterial characteristics to the application in products is highlighted in this review. Besides, the discussion about challenges and future perspectives is also delivered. 展开更多
关键词 ANTIBACTERIAL APPLICATION Biomass derivatives CHALLENGE future perspectives
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Superhydrophobic coatings for corrosion protection of magnesium alloys 被引量:20
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作者 Wenhui Yao Liang Wu +3 位作者 Guangsheng Huang Bin Jiang Andrej Atrens Fusheng Pan 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2020年第17期100-118,共19页
Magnesium(Mg)alloys show great potential to be extensively applied in practice owing to their superior properties,while the poor corrosion resistance does undoubtedly restrict their applications.Superhydrophobic coati... Magnesium(Mg)alloys show great potential to be extensively applied in practice owing to their superior properties,while the poor corrosion resistance does undoubtedly restrict their applications.Superhydrophobic coatings with good repellency to corrosive solutions can significantly decrease the interaction between the corrosive species and the substrate,so that they are receiving a lot of attention to improve the corrosion resistance of Mg alloys.Various strategies have been introduced to develop a superhydrophobic coating on Mg alloys,which were reviewed to elucidate the current research status to provide a clue or thinking for beginning researchers.Further,the existing issues of superhydrophobic coating were discussed,especially for their real applications in practice,mainly owing to their poor mechanical stability.Based on the existing issues,the future study was discussed to improve the stability of hierarchical structures and entrapped air pockets,impart the superhydrophobic coating self-healing property to repair the damaged area during service,provide double protection by incorporation of corrosion inhibitors,or even introduce slippery liquid-infused porous surfaces with lubricant layer to provide better corrosion protection for Mg alloys. 展开更多
关键词 Superhydrophobic coating Corrosion protection Magnesium alloy Synthesis method Existing issues future perspective
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Micro-arc oxidation of magnesium alloys:A review 被引量:15
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作者 Wenhui Yao Liang Wu +7 位作者 Jingfeng Wang Bin Jiang Dingfei Zhang Maria Serdechnova Tatsiana Shulha Carsten Blawert Mikhail L.Zheludkevich Fusheng Pan 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第23期167-189,共23页
Magnesium(Mg)and its alloys present great potential to be extensively applied in different applications.However,the relatively poor resistance to corrosion and wear significantly restricts their applications in practi... Magnesium(Mg)and its alloys present great potential to be extensively applied in different applications.However,the relatively poor resistance to corrosion and wear significantly restricts their applications in practice.As one of strategies of surface treatment,micro-arc oxidation(MAO)process attracts a lot of attention,since it does not use neither expensive equipment,nor complicated manipulation.This review systematically discusses MAO mechanism and some typical models,which still need to be further developed to provide a better understanding and guide for future researchers.Subsequently,main influencing factors of MAO process are analyzed in detail.Further,some popular applications of MAO coatings are respectively reviewed,including biomedical application,decoration,thermal control,corrosion and wear resistance,and industrial applications in practice.The existing issues and future perspectives are finally discussed to further accelerate extensive applications of Mg alloys. 展开更多
关键词 Micro-arc oxidation Magnesium alloys REVIEW Main MAO applications Existing issues and future perspective
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3D Printing of Biodegradable Polymer Vascular Stents:A Review 被引量:1
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作者 Weijian Hua Weiliang Shi +4 位作者 Kellen Mitchell Lily Raymond Ryan Coulter Danyang Zhao Yifei Jin 《Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers)》 2022年第2期1-15,共15页
Biodegradable polymer vascular stents(BPVSs)have been widely used in percutaneous coronary interventions for the treatment of coronary artery diseases.The development of BPVSs is an integrated process that combines ma... Biodegradable polymer vascular stents(BPVSs)have been widely used in percutaneous coronary interventions for the treatment of coronary artery diseases.The development of BPVSs is an integrated process that combines material design/selection,manufacturing,and performance characterization.Three-dimensional(3D)printing technology is a powerful tool for polymer stent fabrication.Current review studies have focused primarily on the material and structural design of polymer stents but have failed to comprehensively discuss different 3D printing approaches and stent characterization techniques.In this paper,we address these shortcomings by discussing 3D printing methods and their application in BPVSs.First,some commonly used 3D printing methods(including material extrusion,vat polymerization,and powder bed fusion)and potential 3D printing strategies(including material jetting and binder jetting)for fabricating BPVSs are discussed;furthermore,the main post-treatments are summarized.Then,techniques to characterize the morphology,mechanical properties,and biological prop-erties of the printed BPVSs are introduced.Subsequently,representative commercial BPVSs and lab-grade BPVSs are compared.Finally,based on the limitations of stent printing and characterization processes,future perspec-tives are proposed,which may help develop new techniques to fabricate more customized stents and accurately evaluate their performance. 展开更多
关键词 Biodegradable polymer vascular stents 3D printing approaches MORPHOLOGY Mechanical properties Biological properties future perspectives
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Obstacles open the door—Negative shocks can motivate individuals to focus on opportunities 被引量:2
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作者 Jin Feng Wenxia Zhou +1 位作者 Shuoyu Li Mengyi Li 《Frontiers of Business Research in China》 2019年第4期399-415,共17页
By responding to the call for research on negative career shocks and future time perspective,this study regarded internal social capital as a tool of resource retention which shifts attention to negative career shocks... By responding to the call for research on negative career shocks and future time perspective,this study regarded internal social capital as a tool of resource retention which shifts attention to negative career shocks’positive effects.We test a moderated mediation model which illustrates the effect of negative career shocks on focus on opportunities—positive dimension of occupational future time perspective.Results revealed that internal social capital acts as the mediator between negative career shocks and focus on opportunities,and organizational embeddedness moderats the mediation effect.The relationship is stronger when individuals are highly embedded in organizations. 展开更多
关键词 Career shocks future time perspective Focus on opportunities Internal social capital Organizational embeddedness
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