In order to research the bond properties between corroded reinforcement bars and concrete,reinforcement bars with different diameters and different types and concrete with different strength levels were treated specia...In order to research the bond properties between corroded reinforcement bars and concrete,reinforcement bars with different diameters and different types and concrete with different strength levels were treated specially with all soaking and impressed current method,and the bond properties were measured with the pull-out test.The comparative analysis of the bond properties of corroded reinforcement bars was carried out.The results showed that the types of reinforcement bars and concrete had great influence on the bond strength.The corrosion and volume expansion of reinforcement bars made concrete in tensile condition,which tended to produce cracks in parallel reinforced direction.The typical bond failure of plain reinforcement bars was pull-out,while the typical bond failure of ribbed reinforcement bars was split.The bond strength between corroded reinforcement bars and concrete increased with the increase of concrete strength.The bond strength of plain and ribbed reinforcement bars showed a decreasing trend after the first increase with the increase of the extent of corrosion.Through the test,the coefficients of the bond strength of plain and ribbed reinforcement bars were given,respectively.展开更多
The world was shocked by the devastating earthquake of May 12th in Sichuan province, but the world has also been moved by the courage, selflessness and humanity shown in the country’s massive rescue operations in the...The world was shocked by the devastating earthquake of May 12th in Sichuan province, but the world has also been moved by the courage, selflessness and humanity shown in the country’s massive rescue operations in the terrifying aftermaths of the quake. The impressive relief operations will leave a profound and far-reaching in uence on the nation’s reform and opening-up e orts.展开更多
In this study,artificial neural networks(ANNs)were implemented to determine design parameters for an impressed current cathodic protection(ICCP)prototype.An ASTM A36 steel plate was tested in 3.5%NaCl solution,seawate...In this study,artificial neural networks(ANNs)were implemented to determine design parameters for an impressed current cathodic protection(ICCP)prototype.An ASTM A36 steel plate was tested in 3.5%NaCl solution,seawater,and NS4 using electrochemical impedance spectroscopy(EIS)to monitor the evolution of the substrate surface,which affects the current required to reach the protection potential(Eprot).Experimental data were collected as training datasets and analyzed using statistical methods,including box plots and correlation matrices.Subsequently,ANNs were applied to predict the current demand at different exposure times,enabling the estimation of electrochemical parameters(limiting voltage values)that can be used to optimize a self-regulating ICCP system.The obtained electrochemical parameters were then used,through Particle Swarm Optimization(PSO),to fine-tune an ANN-based proportional-integral-derivative(PID)controller for the ICCP system.展开更多
Objective:To explore the application effect of digital intraoral scanning impression technique in oral implant restoration for periodontitis patients and analyze its impact on patients’Visual Analogue Scale(VAS)score...Objective:To explore the application effect of digital intraoral scanning impression technique in oral implant restoration for periodontitis patients and analyze its impact on patients’Visual Analogue Scale(VAS)scores.Methods:A total of 80 periodontitis patients who received implant restoration in our hospital from May 2023 to May 2025 were selected as research subjects.They were randomly divided into an observation group and a control group using a random number table method,with 40 cases in each group.The observation group used the digital intraoral scanning impression technique to obtain impressions,while the control group used the traditional silicone rubber impression technique.The impression-taking time,the number of prostheses try-ins,implant survival rate,periodontal health indicators(probing depth,gingival index,bleeding index),and VAS scores(pain during treatment and comfort after restoration)were compared between the two groups.Results:The observation group was superior to the control group in terms of impression-taking time,the number of prostheses try-ins,and implant survival rate(p<0.05).Six months after restoration,the improvement in periodontal health indicators in the observation group was significantly better than that in the control group(p<0.05).In addition,the pain VAS score of the observation group during treatment was lower than that of the control group,and the comfort VAS score after restoration was higher than that of the control group(p<0.05).Conclusion:Digital intraoral scanning impression technology can effectively enhance the efficiency and success rate of implant restoration in periodontitis patients,improve periodontal health,alleviate patients’discomfort during treatment,and increase post-restoration comfort,demonstrating high clinical application value.展开更多
Simons In the 29th Olympic Games,Amedcan swimmer Michael Phelps sought to navigate uncharted territory.He has widely known in the last Olympics and for his second straight Olympics,the 23-year-old Phelps won eight gol...Simons In the 29th Olympic Games,Amedcan swimmer Michael Phelps sought to navigate uncharted territory.He has widely known in the last Olympics and for his second straight Olympics,the 23-year-old Phelps won eight gold medals to surpass the record seven that fellow-American swimmer Mark Spitz won in 1972.The Olympic Games will be a worldwide game,and展开更多
Monovalent anions,with relatively low charge density,exhibit weak bond energy with Zn^(2+)ions,which facilitates the solubility of Zn salts and the regulation of solvation structures.In this study,zinc bis(aminosulfat...Monovalent anions,with relatively low charge density,exhibit weak bond energy with Zn^(2+)ions,which facilitates the solubility of Zn salts and the regulation of solvation structures.In this study,zinc bis(aminosulfate)(Zn(NH_(2)SO_(3))_(2))with a monovalent anion,NH_(2)SO_(3)^(-),was synthesized and dissolved in different ratios of dimethyl sulfoxide(DMSO)and H_(2)O as electrolytes for Zn-ion batteries(ZIBs).From the perspective of game theory,the influences of DMSO and H_(2)O on the solvation structure and electrochemical performance of the Zn(NH_(2)SO_(3))_(2)based electrolytes has been meticulously discussed.Computations and spectra analysis indicate that DMSO molecules are reluctant to penetrate the primary solvation structure of Zn^(2+)ions.Indeed,increasing DMSO in electrolytes can induce a transition from solvent-separated ion pairs(SSIP)to contact ion pairs(CIP),resulting in an enrichment of anions in the primary solvation structure.This alteration can significantly suppress parasitic reactions,enhance nucleation density,and refine the deposition morphology during the Zn plating process,leading to superior cyclic stability and high coulombic efficiency(CE)of Zn//Cu and Zn//Zn cells.However,the enrichment of anions in the primary solvation structure also inhibits the activity of Zn^(2+)ions,amplifies the polarization effect,and engenders a sluggish ionization dynamics,resulting in the low energy conversion efficiency of the battery.These findings underscore the influence of the anion ratio within the primary solvation structure on electrochemical properties of electrolytes for ZIBs,which may be a pivotal determinant in the Zn deposition process.展开更多
Katherine Mansfield utilizes impressionistic techniques in her famous short story“The Garden Party”,namely,light and color,impressions of the moment,and subjective reality.The employment of light and color contribut...Katherine Mansfield utilizes impressionistic techniques in her famous short story“The Garden Party”,namely,light and color,impressions of the moment,and subjective reality.The employment of light and color contributes to create atmosphere,and contrast the brilliance of the Sheridans’garden with the dim,muted tones of the workers’cottages,thereby revealing class disparity.Through fleeting impressions of the moment,the narrative crystallizes transient experiences that display deeper truths about beauty,privilege,and suffering.Most importantly,Mansfield’s emphasis on subjective perception illustrates how reality is refracted through individual consciousness.The integration of such impressionistic techniques not only shapes the story’s impressionistic style,but also helps it better present the themes like moral awareness,social inequality,and life and death.展开更多
This study analyzed how impressions are formed online depending on the type of social media and the implications that may come from the over-disclosure of information. Using a Qualtrics survey, 97 participants viewed ...This study analyzed how impressions are formed online depending on the type of social media and the implications that may come from the over-disclosure of information. Using a Qualtrics survey, 97 participants viewed the profile of a female teaching assistant on Twitter and Facebook. While there was little difference between the two social media, the use of self-disclosure on Twitter seemed slightly more inappropriate for sharing personal information.展开更多
Newspapers and magazines were primary media for Sino-Western cultural exchange in the early 19th century.The Chinese Repository,a monthly periodical founded by American missionary Elijah Bridgman in 1832,reported on C...Newspapers and magazines were primary media for Sino-Western cultural exchange in the early 19th century.The Chinese Repository,a monthly periodical founded by American missionary Elijah Bridgman in 1832,reported on Chinese social life as well as legal cases,system,and penalty.These reports served as a crucial window for the West to observe 19th-century Chinese criminal practices and significantly shaped Western perceptions of Chinese penal systems.Analysis of the periodical’s reports and reviews reveals a predominantly critical and negative Western view on China,arising from the collective Western impressions of China at the time and the identities and experiences of The Chinese Repository’s main contributors.The Western impressions of China formed during this period of time have had lasting negative impacts on Western legal demands towards China.Studies on the negative Western impressions of the Chinese view of legal penalty with a case study of The Chinese Repository offer valuable insights into the current Sino-Western legal cultural exchanges and dissemination.展开更多
This paper focuses on advanced analysis techniques and design considerations of DC interference generated by HVDC electrodes during normal bipolar and temporary monopolar operations on neighboring metallic utilities, ...This paper focuses on advanced analysis techniques and design considerations of DC interference generated by HVDC electrodes during normal bipolar and temporary monopolar operations on neighboring metallic utilities, with a special emphasis on buried gas and oil pipelines. This study examines the level of pipeline corrosion, the safety status in the vicinity of exposed appurtenances and the impact of DC interference on the integrity of insulating flanges and impressed current cathodic protection (ICCP) systems. Computation results obtained for different soil models show that different soils can lead to completely different DC interference effects. The results and conclusions presented here can be used as a reference to analyze the severity of DC interference on pipelines due to proximate HVDC electrodes.展开更多
Few records of the impressed tortoise （Manouria impressa） are available from Myanmar and most are based on historic accounts, old museum specimens, and shells obtained from villagers and wildlife traffickers. We her...Few records of the impressed tortoise （Manouria impressa） are available from Myanmar and most are based on historic accounts, old museum specimens, and shells obtained from villagers and wildlife traffickers. We herein report the observation of a living M. impressa in the Hukaung Valley Wildlife Sanctuary of northern Myanmar. Our observation extends the known distribution of M. impressa in Myanmar approximately 850 km northwards from previously reported populations in the Rakhine Hills of Magway Region.展开更多
Cathodic protection is an effective electrochemical technique for preventing corrosion of metallic structures, for large structures like piles network impressed current cathodic protection (ICCP) system is usually pre...Cathodic protection is an effective electrochemical technique for preventing corrosion of metallic structures, for large structures like piles network impressed current cathodic protection (ICCP) system is usually preferred. The main aim of this study is to obtain the optimum protection potential that would provide a full cathodic protection for steel piles net-work immersed in sea water at Al-Zubair harbor. The effect of one immeasurable factor (path of anode (χ1)) and two measurable factors (position of anode (χ2) and voltage of power supply (χ3)) on protection potential are studied. Each factor has three different levels (high, medium, and low). Twenty-seven experiments were conducted based on a full factorial design of experiments. The results show that, a sufficient protection for three cathodes can be provided through the electrical circuit connecting them within the appropriate geometric shape.The protection potential is icreased with increasing the voltage of power supply and decreasing of distance between the anode and cathodes (piles network).展开更多
In her writing,Willa Cather absorbed the techniques of the impressionist painters,striving to present human perception and fo-cus their individual impression on a fleeting moment to provide the fragments of impression...In her writing,Willa Cather absorbed the techniques of the impressionist painters,striving to present human perception and fo-cus their individual impression on a fleeting moment to provide the fragments of impression upon which the whole can be constructed.展开更多
基金Supported by National Science and Technology Support Program(No.2012BAJ16B05)Program for Liaoning Excellent Talents in University(No.LJQ2011061)
文摘In order to research the bond properties between corroded reinforcement bars and concrete,reinforcement bars with different diameters and different types and concrete with different strength levels were treated specially with all soaking and impressed current method,and the bond properties were measured with the pull-out test.The comparative analysis of the bond properties of corroded reinforcement bars was carried out.The results showed that the types of reinforcement bars and concrete had great influence on the bond strength.The corrosion and volume expansion of reinforcement bars made concrete in tensile condition,which tended to produce cracks in parallel reinforced direction.The typical bond failure of plain reinforcement bars was pull-out,while the typical bond failure of ribbed reinforcement bars was split.The bond strength between corroded reinforcement bars and concrete increased with the increase of concrete strength.The bond strength of plain and ribbed reinforcement bars showed a decreasing trend after the first increase with the increase of the extent of corrosion.Through the test,the coefficients of the bond strength of plain and ribbed reinforcement bars were given,respectively.
文摘The world was shocked by the devastating earthquake of May 12th in Sichuan province, but the world has also been moved by the courage, selflessness and humanity shown in the country’s massive rescue operations in the terrifying aftermaths of the quake. The impressive relief operations will leave a profound and far-reaching in uence on the nation’s reform and opening-up e orts.
文摘In this study,artificial neural networks(ANNs)were implemented to determine design parameters for an impressed current cathodic protection(ICCP)prototype.An ASTM A36 steel plate was tested in 3.5%NaCl solution,seawater,and NS4 using electrochemical impedance spectroscopy(EIS)to monitor the evolution of the substrate surface,which affects the current required to reach the protection potential(Eprot).Experimental data were collected as training datasets and analyzed using statistical methods,including box plots and correlation matrices.Subsequently,ANNs were applied to predict the current demand at different exposure times,enabling the estimation of electrochemical parameters(limiting voltage values)that can be used to optimize a self-regulating ICCP system.The obtained electrochemical parameters were then used,through Particle Swarm Optimization(PSO),to fine-tune an ANN-based proportional-integral-derivative(PID)controller for the ICCP system.
文摘Objective:To explore the application effect of digital intraoral scanning impression technique in oral implant restoration for periodontitis patients and analyze its impact on patients’Visual Analogue Scale(VAS)scores.Methods:A total of 80 periodontitis patients who received implant restoration in our hospital from May 2023 to May 2025 were selected as research subjects.They were randomly divided into an observation group and a control group using a random number table method,with 40 cases in each group.The observation group used the digital intraoral scanning impression technique to obtain impressions,while the control group used the traditional silicone rubber impression technique.The impression-taking time,the number of prostheses try-ins,implant survival rate,periodontal health indicators(probing depth,gingival index,bleeding index),and VAS scores(pain during treatment and comfort after restoration)were compared between the two groups.Results:The observation group was superior to the control group in terms of impression-taking time,the number of prostheses try-ins,and implant survival rate(p<0.05).Six months after restoration,the improvement in periodontal health indicators in the observation group was significantly better than that in the control group(p<0.05).In addition,the pain VAS score of the observation group during treatment was lower than that of the control group,and the comfort VAS score after restoration was higher than that of the control group(p<0.05).Conclusion:Digital intraoral scanning impression technology can effectively enhance the efficiency and success rate of implant restoration in periodontitis patients,improve periodontal health,alleviate patients’discomfort during treatment,and increase post-restoration comfort,demonstrating high clinical application value.
文摘Simons In the 29th Olympic Games,Amedcan swimmer Michael Phelps sought to navigate uncharted territory.He has widely known in the last Olympics and for his second straight Olympics,the 23-year-old Phelps won eight gold medals to surpass the record seven that fellow-American swimmer Mark Spitz won in 1972.The Olympic Games will be a worldwide game,and
基金supported by the National Natural Science Foundation of China(51972187 and 22279068)the Natural Science Foundation of Shandong Province(ZR2023ME182)the Fundation of Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Anhui University of Technology)(GFST2024KF03)。
文摘Monovalent anions,with relatively low charge density,exhibit weak bond energy with Zn^(2+)ions,which facilitates the solubility of Zn salts and the regulation of solvation structures.In this study,zinc bis(aminosulfate)(Zn(NH_(2)SO_(3))_(2))with a monovalent anion,NH_(2)SO_(3)^(-),was synthesized and dissolved in different ratios of dimethyl sulfoxide(DMSO)and H_(2)O as electrolytes for Zn-ion batteries(ZIBs).From the perspective of game theory,the influences of DMSO and H_(2)O on the solvation structure and electrochemical performance of the Zn(NH_(2)SO_(3))_(2)based electrolytes has been meticulously discussed.Computations and spectra analysis indicate that DMSO molecules are reluctant to penetrate the primary solvation structure of Zn^(2+)ions.Indeed,increasing DMSO in electrolytes can induce a transition from solvent-separated ion pairs(SSIP)to contact ion pairs(CIP),resulting in an enrichment of anions in the primary solvation structure.This alteration can significantly suppress parasitic reactions,enhance nucleation density,and refine the deposition morphology during the Zn plating process,leading to superior cyclic stability and high coulombic efficiency(CE)of Zn//Cu and Zn//Zn cells.However,the enrichment of anions in the primary solvation structure also inhibits the activity of Zn^(2+)ions,amplifies the polarization effect,and engenders a sluggish ionization dynamics,resulting in the low energy conversion efficiency of the battery.These findings underscore the influence of the anion ratio within the primary solvation structure on electrochemical properties of electrolytes for ZIBs,which may be a pivotal determinant in the Zn deposition process.
文摘Katherine Mansfield utilizes impressionistic techniques in her famous short story“The Garden Party”,namely,light and color,impressions of the moment,and subjective reality.The employment of light and color contributes to create atmosphere,and contrast the brilliance of the Sheridans’garden with the dim,muted tones of the workers’cottages,thereby revealing class disparity.Through fleeting impressions of the moment,the narrative crystallizes transient experiences that display deeper truths about beauty,privilege,and suffering.Most importantly,Mansfield’s emphasis on subjective perception illustrates how reality is refracted through individual consciousness.The integration of such impressionistic techniques not only shapes the story’s impressionistic style,but also helps it better present the themes like moral awareness,social inequality,and life and death.
文摘This study analyzed how impressions are formed online depending on the type of social media and the implications that may come from the over-disclosure of information. Using a Qualtrics survey, 97 participants viewed the profile of a female teaching assistant on Twitter and Facebook. While there was little difference between the two social media, the use of self-disclosure on Twitter seemed slightly more inappropriate for sharing personal information.
基金Supported by the National Social Science Fund General Project titled“The Millard’s Review and the Study of Sino-American Legal Civilization Exchange in the First Half of the 20th Century”.
文摘Newspapers and magazines were primary media for Sino-Western cultural exchange in the early 19th century.The Chinese Repository,a monthly periodical founded by American missionary Elijah Bridgman in 1832,reported on Chinese social life as well as legal cases,system,and penalty.These reports served as a crucial window for the West to observe 19th-century Chinese criminal practices and significantly shaped Western perceptions of Chinese penal systems.Analysis of the periodical’s reports and reviews reveals a predominantly critical and negative Western view on China,arising from the collective Western impressions of China at the time and the identities and experiences of The Chinese Repository’s main contributors.The Western impressions of China formed during this period of time have had lasting negative impacts on Western legal demands towards China.Studies on the negative Western impressions of the Chinese view of legal penalty with a case study of The Chinese Repository offer valuable insights into the current Sino-Western legal cultural exchanges and dissemination.
文摘This paper focuses on advanced analysis techniques and design considerations of DC interference generated by HVDC electrodes during normal bipolar and temporary monopolar operations on neighboring metallic utilities, with a special emphasis on buried gas and oil pipelines. This study examines the level of pipeline corrosion, the safety status in the vicinity of exposed appurtenances and the impact of DC interference on the integrity of insulating flanges and impressed current cathodic protection (ICCP) systems. Computation results obtained for different soil models show that different soils can lead to completely different DC interference effects. The results and conclusions presented here can be used as a reference to analyze the severity of DC interference on pipelines due to proximate HVDC electrodes.
文摘Few records of the impressed tortoise （Manouria impressa） are available from Myanmar and most are based on historic accounts, old museum specimens, and shells obtained from villagers and wildlife traffickers. We herein report the observation of a living M. impressa in the Hukaung Valley Wildlife Sanctuary of northern Myanmar. Our observation extends the known distribution of M. impressa in Myanmar approximately 850 km northwards from previously reported populations in the Rakhine Hills of Magway Region.
文摘Cathodic protection is an effective electrochemical technique for preventing corrosion of metallic structures, for large structures like piles network impressed current cathodic protection (ICCP) system is usually preferred. The main aim of this study is to obtain the optimum protection potential that would provide a full cathodic protection for steel piles net-work immersed in sea water at Al-Zubair harbor. The effect of one immeasurable factor (path of anode (χ1)) and two measurable factors (position of anode (χ2) and voltage of power supply (χ3)) on protection potential are studied. Each factor has three different levels (high, medium, and low). Twenty-seven experiments were conducted based on a full factorial design of experiments. The results show that, a sufficient protection for three cathodes can be provided through the electrical circuit connecting them within the appropriate geometric shape.The protection potential is icreased with increasing the voltage of power supply and decreasing of distance between the anode and cathodes (piles network).
文摘In her writing,Willa Cather absorbed the techniques of the impressionist painters,striving to present human perception and fo-cus their individual impression on a fleeting moment to provide the fragments of impression upon which the whole can be constructed.
