期刊文献+
共找到1,985篇文章
< 1 2 100 >
每页显示 20 50 100
Narrative Thinking of Healthcare Providers in Medical Cases and Its Implications for Modern Medical Education
1
作者 YANG Xiaolin HUANG Qing 《Chinese Medicine and Culture》 2024年第4期271-280,共10页
In the realm of Chinese narrative medicine, narrative thinking holds equal significance to evidence-based thinking within clinical practice, making substantial contributions to patient safety and medical quality. Anci... In the realm of Chinese narrative medicine, narrative thinking holds equal significance to evidence-based thinking within clinical practice, making substantial contributions to patient safety and medical quality. Ancient Chinese medical theories advocate forging a narrative bond with patients, urging healthcare practitioners to utilize Dao Shu Jie He(道术结合 integration of Dao and techniques) and Yi Dao Yu Shu(以道驭术 guiding techniques with Dao) during diagnosis, treatment, and rehabilitation. In this context, Dao(道) in traditional Chinese medicine(TCM) corresponds to narrative thinking(叙事思维) while Shu(术) aligns with scientific thinking(科学思维) in evidence-based medicine. This study adopts “narrative Chinese medicine” within the “discourse system of Chinese narrative medicine” as its framework, centering on medical stories that exemplify the application of narrative thinking in ancient Chinese diagnosis and treatment. It delves into the narrative thinking encapsulated in Chinese medicine, such as Guan Wu Qu Xiang(观物取象 observing things and extracting information), Can He Er Xing(参合而行 final examination and decision by integrating the four diagnoses), Xing Shen Bing Zhi(形神并治 body-spirit treatment), Xin Shen Jian Li(心身兼理 mind-body balance) and Bian Zheng Lun Zhi(辨证论治 treatment based on pattern differentiation). The study endeavors to inspire contemporary medical educators and clinicians to acknowledge the value of narrative thinking in TCM and fully incorporate it into daily medical practice. 展开更多
关键词 Chinese narrative medicine Narrative traditional Chinese medicine Narrative thinking Medical cases Education Traditional Chinese medicine
下载PDF
The dynamics of multidimensional educational poverty
2
作者 Azaz Ali Ather Bukhari Hooi Hooi Lean +2 位作者 Waqar Ali Ather Bukhari Saqlain Raza Amber Pervaiz 《Data Science and Management》 2024年第4期314-322,共9页
Education is a cornerstone in promoting the overall welfare of individuals and plays a pivotal role in shaping their lives.As the developing world grapples with the multifaceted challenges of poverty,there is a growin... Education is a cornerstone in promoting the overall welfare of individuals and plays a pivotal role in shaping their lives.As the developing world grapples with the multifaceted challenges of poverty,there is a growing emphasis on evaluating poverty from a multidimensional perspective.Therefore,this study estimates the educational poverty index(EPI).To construct the EPI,Alkire and Foster’s methodology was used with data from the Pakistan Panel Household Survey.We also estimated the dynamics of educational poverty using logistic regression.The results show that the EPI declined from 0.24 in 2001 to 0.21 in 2010.Similarly,the intensity decreased from 0.42 to 0.30.However,the incidence of educational poverty increased from 0.58 to 0.69.At the provincial level,there was a reduction in educational poverty and intensity across all provinces.However,the rate of decline in the EPI and intensity was comparatively higher in Baluchistan than in other provinces.Most of the population belonged to the transitory poor category(0.47).Other dynamic factors such as the household head’s age,education,family size,disability,and land acres also play vital roles in moving into or out of poverty.Our study reveals numerous dimensions that can increase household educational poverty.The government should be vigilant while preparing the policy and must consider the multiple dimensions of a household to eradicate educational poverty. 展开更多
关键词 Educational poverty Chronic poor Transitory poor Pakistan panel household survey
下载PDF
Recent progress in the applications of presynaptic dopaminergic positron emission tomography imaging in parkinsonism
3
作者 Yujie Yang Xinyi Li +7 位作者 Jiaying Lu Jingjie Ge Mingjia Chen Ruixin Yao Mei Tian Jian Wang Fengtao Liu Chuantao Zuo 《Neural Regeneration Research》 SCIE CAS 2025年第1期93-106,共14页
Nowadays,presynaptic dopaminergic positron emission tomography,which assesses deficiencies in dopamine synthesis,storage,and transport,is widely utilized for early diagnosis and differential diagnosis of parkinsonism.... Nowadays,presynaptic dopaminergic positron emission tomography,which assesses deficiencies in dopamine synthesis,storage,and transport,is widely utilized for early diagnosis and differential diagnosis of parkinsonism.This review provides a comprehensive summary of the latest developments in the application of presynaptic dopaminergic positron emission tomography imaging in disorders that manifest parkinsonism.We conducted a thorough literature search using reputable databases such as PubMed and Web of Science.Selection criteria involved identifying peer-reviewed articles published within the last 5 years,with emphasis on their relevance to clinical applications.The findings from these studies highlight that presynaptic dopaminergic positron emission tomography has demonstrated potential not only in diagnosing and differentiating various Parkinsonian conditions but also in assessing disease severity and predicting prognosis.Moreover,when employed in conjunction with other imaging modalities and advanced analytical methods,presynaptic dopaminergic positron emission tomography has been validated as a reliable in vivo biomarker.This validation extends to screening and exploring potential neuropathological mechanisms associated with dopaminergic depletion.In summary,the insights gained from interpreting these studies are crucial for enhancing the effectiveness of preclinical investigations and clinical trials,ultimately advancing toward the goals of neuroregeneration in parkinsonian disorders. 展开更多
关键词 aromatic amino acid decarboxylase brain imaging dopamine transporter Parkinson’s disease PARKINSONISM positron emission tomography presynaptic dopaminergic function vesicle monoamine transporter type 2
下载PDF
One Novel Nortriterpenoid from the Mastic(Pistacia lentiscus)and Its Anti-Inflammatory Activity
4
作者 Yan Wu Xuerui An +3 位作者 Haofan Lv Zhiqiang Zhao Wei Liu Chunpeng Wan 《Phyton-International Journal of Experimental Botany》 2025年第1期199-207,共9页
A novel pair of oleanane nor-triterpenes,with compound 1 featuring a unique 18α-H structure,was isolated from mastic,and this compound represents a noteworthy new entity not previously reported in the literature.The ... A novel pair of oleanane nor-triterpenes,with compound 1 featuring a unique 18α-H structure,was isolated from mastic,and this compound represents a noteworthy new entity not previously reported in the literature.The absolute configurations of their structures were further determined using a combination of different analytical methods such as NMR,high-resolution mass spectrometry(HR-MS),ultraviolet(UV),infrared(IR)and single-crystal X-ray diffraction(SXRD).The compound actively mitigated inflammations by efficiently quenching nitric oxide(NO)synthesis within an ex vivo system using lipopolysaccharide activated murine macrophage RAW264.7 cells.Moreover,compound 1 exhibit a better IC50 concentration of 11.69±1.39µM,surpassing the efficacy of the positive control dexamethasone,which exhibited an IC50 of 23.21±1.17μM.While compound 2 also demonstrated inhibitory activity,its potency was comparatively weaker,with an IC50 of 26.18±2.66μM. 展开更多
关键词 MASTIC nor-triterpene 18α-H oleanane ANTI-INFLAMMATORY
下载PDF
Macroscopic perspective on phase transition behavior of natural single-crystal graphite under different pressure environments
5
作者 Xiaoshuang Yin Songyang Li +4 位作者 Lijuan Wang Peiyuan Liu Zhihai Cheng Huiyang Gou Liuxiang Yang 《Matter and Radiation at Extremes》 2025年第1期72-80,共9页
Comprehensive understanding of the direct transformation pathway from graphite to diamond under high temperature and high pressure has long been one of the fundamental goals in materials science.Despite considerable e... Comprehensive understanding of the direct transformation pathway from graphite to diamond under high temperature and high pressure has long been one of the fundamental goals in materials science.Despite considerable experimental and theoretical progress,current experimental studies have mainly focused on the local microstructural characterizations of recovered samples,which has certain limitations for hightemperature and high-pressure products,which often exhibit diversity.Here,we report on the pressure-induced phase transition behavior of natural single-crystal graphite under three distinct pressure-transmitting media from a macroscopic perspective using in situ two-dimensional Raman spectroscopy,scanning electron microscopy,and atomic force microscopy.The surface evolution process of graphite before and after the phase transition is captured,revealing that pressure-induced surface textures can impede the continuity of the phase transition process across the entire single crystal.Our results provide a fresh perspective for studying the phase transition behavior of graphite and greatly deepen our understanding of this behavior,which will be helpful in guiding further high-temperature and high-pressure syntheses of carbon allotropes. 展开更多
关键词 behavior TRANSITION phase
下载PDF
A Life-skills-based HIV/AIDS Prevention Education for Rural Students of Primary Schools in China:What Changed? What Have We Learned? 被引量:4
6
作者 WEI LIAO JING-MEI JIANG +2 位作者 BIN YANG XIN ZENG SU-SU LIAO 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2010年第5期409-419,共11页
Objective To evaluate a four-hour life-skills-based HIV/AIDS prevention curriculum among 5th grade students in rural primary schools of Hainan province.Methods The study included two stages.Stage one (September 2006-... Objective To evaluate a four-hour life-skills-based HIV/AIDS prevention curriculum among 5th grade students in rural primary schools of Hainan province.Methods The study included two stages.Stage one (September 2006-May 2007) was a pre-post-quasi experimental design;a total of 2 413 students aged 9 to 14 years from fifth grade classes of nine primary schools completed a baseline survey (1 720 students were in the intervention group,693 in the control group),and over 98% of them took part in a short survey.The experimental curriculum was provided to the intervention group.At stage two (September 2008),a cross-sectional questionnaire was administered to 6 923 students in 7th grade classes of eight middle schools in the same study sites.There were 1 437 students in the intervention group when the curriculum was conducted.Results Students tended to score higher in areas of HIV/AIDS related knowledge and attitudes,if they were younger than average,lived in the county seat,had access to the internet,and their parents had completed higher levels of education.Path analysis showed that,after controlling for characteristics such as family and community factors,the total effects of curriculum on knowledge in the short-term model increased remarkably compared with the baseline,and maintained major contributions to knowledge in the mid-term model.The positive effect of knowledge on attitudes was significantly improved in the short-term model as well.Conclusion A life-skills based curriculum can improve HIV/AIDS related knowledge and self-perceived level of life-skills among primary school students in rural areas in a short time,and these positive effects can still be observed at least 2 years post participation in the curriculum. 展开更多
关键词 ADOLESCENT HIV/AIDS prevention Life-skills education Effect evaluation Rural area Intervention research
下载PDF
Assessment of Personality Traits of Physical Education Teachers
7
作者 Erdal Demir Gulsah Sahin 《Journal of Sports Science》 2014年第3期154-160,共7页
The purpose of this study is to examine the relationship between the personality traits of physical education teachers working in secondary schools in Istanbul. The research was conducted in accordance with screening ... The purpose of this study is to examine the relationship between the personality traits of physical education teachers working in secondary schools in Istanbul. The research was conducted in accordance with screening model. The research group is formed by physical education teachers who are working in public and private secondary schools which are connected to the Ministry of National Education in Istanbul in 2012-2013 academic years. Among the participants, 36.8% is formed by female physical education teachers, and 63.2% is formed by male physical education teachers. PERI (personality inventory) short form is used. PERI is formed by five subcomponents: openness to experience, sense of responsibility, extroversion, coherence and emotional stability. Assessment instrument was applied to participants with the face-to-face technique by the researcher. Findings were obtained by using T Test, Kruskal-Wallis Test and Mann-Whitney U Test in the analysis of research data. Consequently, it is understood that physical education teachers had low scores on emotional stability personality traits and so they were not adequate. In openness to experience, extroversion, coherence and sense of responsibility subcomponents, it is understood that they had higher scores and they were adequate. Besides, there is no significant difference found between gender, school type and years of service variables and personality traits (P 〈 0.05). 展开更多
关键词 Physical education teacher PERSONALITY personality traits secondary school.
下载PDF
Developing Image of Higher Education Performance
8
作者 Uyu Wahyudin Ridwan El Hariri Deni Darmawan 《International Journal of Communications, Network and System Sciences》 2013年第9期407-413,共7页
The study focused on Pattern Analysis Relationships between Basic Element Institutional Excellence in Education with a focus of the study: What is the actual profile of the basic elements of excellence of educational ... The study focused on Pattern Analysis Relationships between Basic Element Institutional Excellence in Education with a focus of the study: What is the actual profile of the basic elements of excellence of educational institutions, influence leadership, strategic planning, as well as students and focus stakeholders, focus staffs and faculty in order to develop the image Parahyangan University (UNPAR) performance by reference to the Performance Excellence Criteria for Education. The method used a qualitative approach and quantitative approach [1] with two models using qualitative-quantitative approaches, namely: two-phase design, dominant-les dominant design, and mixed methodology design. Respondents and the information in this study are a lecturer and head of the University. 展开更多
关键词 PERFORMANCE INSTITUTION LEADERSHIP Managemengt STRATEGIC
下载PDF
Research and Practice of theoretical framework of College Basketball sports education curriculum system
9
作者 Xiangrong Zhang 《International Journal of Technology Management》 2013年第9期119-121,共3页
Education is the combination of basketball education and basketball activity. It is a kind of activity that basketball is as the core form, it is in order to enhance the skills of participants, technology, physical fi... Education is the combination of basketball education and basketball activity. It is a kind of activity that basketball is as the core form, it is in order to enhance the skills of participants, technology, physical fitness, and promote a comprehensive development of their physical and mental activity, meanwhile basketball is not only a comprehensive gaming activity, but also an integral part of modern competitive sports, in some way, basketball culture is belonging to a particular social and cultural patterns. The quality of the basketball culture can cultivate people' s sentiments in the teaching process, and develop human wisdom, so that people grasp different spatial abilities and skills with the laws and govern the movement of the body under the time, the paper analyzes Practice mode theoretical framework of the construction of the basketball sports college education curriculum system. 展开更多
关键词 Sports colleges basketball education curriculum theoretical framework RESEARCH PRACTICE
下载PDF
The Impact of Creative Group Teaching and Educational Booklet Methods on Interpersonal Communications among Midwives in Clinical Setting
10
作者 Shirazi Mandana Shariati Mohammad +3 位作者 Modarres Maryam Hosseini Dehshiri Afzal Sadat Hosseini Dehshiri Afzal Sadat Yunesian Masud 《International Journal of Clinical Medicine》 2016年第10期698-711,共14页
Group discussion teaching technique for small groups and encouragement of critical but constructive and creative thinking for finding new and efficient solutions can lead to provision of better health and medical serv... Group discussion teaching technique for small groups and encouragement of critical but constructive and creative thinking for finding new and efficient solutions can lead to provision of better health and medical services that is defined in clinical setting, as the clinical psychology finds a way for curing and education. The present study was conducted with the aim to compare the effects of creative group teaching and educational booklet on interpersonal skills of midwives in a clinical setting. The present study was conducted on 97 midwifery graduates working in hospitals in Kerman Province, in two groups of educational booklet (49 midwives) and educational workshop (48 midwives) who participated in a 3-day creative teaching workshop in summer 2015. Creative problem-solving teaching intervention group was taught through educational workshop method, including small group and team working, group discussion and mini lectures. Midwifery 1 intervention group was provided with an educational booklet validated by professors of Nursing and Midwifery School for independent and individual study by midwives working in Kerman Province hospitals. The two groups were matched in terms of personal details. Hospitals were randomly selected, and midwives were selected by quota sampling. Interpersonal communication skills of both groups were assessed before and after intervention, and two months later using Interpersonal Communication Skills Test. The results obtained were analyzed in SPSS-16 using descriptive statistics, including frequency and percentage, mean and standard deviation, and inferential statistics including U-Mann-Whitney, paired t, independent t, repeated measures ANOVA tests at significance level of P P P P P < 0.001). Both teaching methods improved midwives’ interpersonal communication skills. Therefore, standardized educational booklets which produce cost-effective similar results are recommended. 展开更多
关键词 EDUCATION Interpersonal Communication Clinical Psychology Clinical Medicine Problem-Solving
下载PDF
Diagnostic value of biomarkers for sepsis in adult patients in the emergency department: Don't forget the neutrophil-lymphocyte count ratio
11
作者 G Visveswari Bernadette Tan Qiao Min Fatimah Lateef 《Journal of Acute Disease》 2019年第2期45-52,共8页
Objective: To determine and compare the diagnostic efficiency of various biomarkers [C-reactive protein, neutrophil percentage, neutrophil-lymphocyte ratio (NLCR), lactate, procalcitonin, blood culture] in the identif... Objective: To determine and compare the diagnostic efficiency of various biomarkers [C-reactive protein, neutrophil percentage, neutrophil-lymphocyte ratio (NLCR), lactate, procalcitonin, blood culture] in the identification of septic patients in emergency department (ED), and to assess the predictive value of combination of markers. Methods: This was a prospective, single centre study conducted in the ED of an urban, tertiary care hospital. We included patients who were admitted to the ED with symptoms of a possible infection. Blood cultures and serum measurement of the biomarkers were collected from 131 patients. Patients were determined to be septic or non-septic, based on the systemic inflammatory response syndrome criteria and the diagnosis was made at the ED. Sensitivity, specificity, positive predictive value, negative predictive value and area under curves (AUC) were calculated. Results: A total of 126 patients, 61 with sepsis and 65 without sepsis were eventually included in the study. Neutrophil to lymphocyte ratio displayed the highest accuracy in diagnosing sepsis (AUC 0.735, 95% CI=0648-0.822, P<0.001). The best combination of markers in predicting sepsis was NLCR and white blood cell (AUC: 0.801, 95% CI=0.724-0.878, P<0.001). Conclusions: The results of this small study showed that NLCR outperforms other markers in diagnosing sepsis in ED. It is readily available, cost efficient, non invasive and independent. It may be insufficient to rely on this single marker to diagnose sepsis, so some other diagnostic utilities should be taken into account as one part of the overall assessment. Our study also showed that combination of NLCR and white blood cell provides the highest diagnostic accuracy. More large scale studies across different population groups will be needed to confirm this finding. 展开更多
关键词 Biomarkers Emergency department SEPSIS SYSTEMIC inflammatory response to infection NEUTROPHIL LYMPHOCYTE count RATIO
下载PDF
A comprehensive review on microchannel heat sinks for electronics cooling 被引量:1
12
作者 Zhi-Qiang Yu Mo-Tong Li Bing-Yang Cao 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第2期133-162,共30页
The heat generation of electronic devices is increasing dramatically,which causes a serious bottleneck in the thermal management of electronics,and overheating will result in performance deterioration and even device ... The heat generation of electronic devices is increasing dramatically,which causes a serious bottleneck in the thermal management of electronics,and overheating will result in performance deterioration and even device damage.With the development of micro-machining technologies,the microchannel heat sink(MCHS)has become one of the best ways to remove the considerable amount of heat generated by high-power electronics.It has the advantages of large specific surface area,small size,coolant saving and high heat transfer coefficient.This paper comprehensively takes an overview of the research progress in MCHSs and generalizes the hotspots and bottlenecks of this area.The heat transfer mechanisms and performances of different channel structures,coolants,channel materials and some other influencing factors are reviewed.Additionally,this paper classifies the heat transfer enhancement technology and reviews the related studies on both the single-phase and phase-change flow and heat transfer.The comprehensive review is expected to provide a theoretical reference and technical guidance for further research and application of MCHSs in the future. 展开更多
关键词 microchannel heat sink thermal management of electronics microscale heat transfer heat transfer enhancement
下载PDF
A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption 被引量:1
13
作者 Chunlin He Yun Liu +6 位作者 Mingwei Qi Zunzhang Liu Yuezhou Wei Toyohisa Fujita Guifang Wang Shaojian Ma Wenchao Yang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2024年第3期585-598,共14页
With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environmen... With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthesized from waste amidoxime resin for adsorbing Cr(Ⅵ). The waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow thermal decomposition. The static adsorption of PPR-Z conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-Z is mostly chemical adsorption and exhibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the concept of “treating waste with waste”. 展开更多
关键词 waste amidoxime resin mesoporous adsorbent H_(3)PO_(4)and ZnCl_(2)processing Cr(VI)adsorption electroplating wastewater
下载PDF
Cerebral and muscle tissue oxygenation during exercise in healthy adults: A systematic review 被引量:1
14
作者 Diego Orcioli-Silva Victor Spiandor Beretta +5 位作者 Paulo Cezar Rocha Santos Felipe Marroni Rasteiro Anita Brum Marostegan Rodrigo Vitorio Claudio Alexandre Gobatto Fulvia Barros Manchado-Gobatto 《Journal of Sport and Health Science》 SCIE CAS CSCD 2024年第4期459-471,F0003,共14页
Background:Near-infrared spectroscopy(NIRS)technology has allowed for the measurement of cerebral and skeletal muscle oxygenation simultaneously during exercise.Since this technology has been growing and is now succes... Background:Near-infrared spectroscopy(NIRS)technology has allowed for the measurement of cerebral and skeletal muscle oxygenation simultaneously during exercise.Since this technology has been growing and is now successfully used in laboratory and sports settings,this systematic review aimed to synthesize the evidence and enhance an integrative understanding of bloodflow adjustments and oxygen(O_(2))changes(i.e.,the balance between O_(2) delivery and O_(2) consumption)within the cerebral and muscle systems during exercise.Methods:A systematic review was conducted using PubMed,Embase,Scopus,and Web of Science databases to search for relevant studies that simultaneously investigated cerebral and muscle hemodynamic changes using the near-infrared spectroscopy system during exercise.This review considered manuscripts written in English and available before February 9,2023.Each step of screening involved evaluation by 2 inde-pendent authors,with disagreements resolved by a third author.The Joanna Briggs Institute Critical Appraisal Checklist was used to assess the methodological quality of the studies.Results:Twenty studies were included,of which 80%had good methodological quality,and involved 290 young or middle-aged adults.Different types of exercises were used to assess cerebral and muscle hemodynamic changes,such as cycling(n=11),treadmill(n=1),knee extension(n=5),isometric contraction of biceps brachii(n=3),and duet swim routines(n=1).The cerebral hemodynamics anal-ysis was focused on the frontal cortex(n=20),while in the muscle,the analysis involved vastus lateralis(n=18),gastrocnemius(n=3),biceps brachii(n=5),deltoid(n=1),and intercostal muscle(n=1).Overall,muscle deoxygenation increases during exercise,reaching a plateau in voluntary exhaustion,while in the brain,oxyhemoglobin concentration increases with exercise intensity,reaching a plateau or declining at the exhaustion point.Conclusion:Muscle and cerebral oxygenation respond differently to exercise,with muscle increasing O_(2) utilization and cerebral tissue increasing O_(2) delivery during exercise.However,at the exhaustion point,both muscle and cerebral oxygenation become compromised.This is characterized by a reduction in bloodflow and a decrease in O_(2) extraction in the muscle,while in the brain,oxygenation reaches a plateau or decline,potentially resulting in motor failure during exercise. 展开更多
关键词 Near-infrared spectroscopy HEMODYNAMIC Blood flow BRAIN Muscle metabolism
下载PDF
Regulation of 2-acetyl-1-pyrroline and grain quality in early-season indica fragrant rice by nitrogen and silicon fertilization under different plantation methods 被引量:1
15
作者 Yongjian Chen Lan Dai +7 位作者 Siren Cheng Yong Ren Huizi Deng Xinyi Wang Yuzhan Li Xiangru Tang Zaiman Wang Zhaowen Mo 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第2期511-535,共25页
Fragrant rice has a high market value,and it is a popular rice type among consumers owing to its pleasant flavor.Plantation methods,nitrogen(N)fertilizers,and silicon(Si)fertilizers can affect the grain yield and frag... Fragrant rice has a high market value,and it is a popular rice type among consumers owing to its pleasant flavor.Plantation methods,nitrogen(N)fertilizers,and silicon(Si)fertilizers can affect the grain yield and fragrance of fragrant rice.However,the core commercial rice production attributes,namely the head rice yield(HRY)and 2-acetyl-1-pyrroline(2-AP)content of fragrant rice,under various nitrogen and silicon(N-Si)fertilization levels and different plantation methods remain unknown.The field experiment in this study was performed in the early seasons of 2018 and 2019 with two popular indica fragrant rice cultivars(Yuxiangyouzhan and Xiangyaxiangzhan).They were grown under six N-Si fertilization treatments(combinations of two levels of Si fertilizer,0 kg Si ha^(−1)(Si0)and 150 kg Si ha^(−1)(Si1),and three levels of N fertilizer,0 kg N ha^(−1)(N0),150 kg N ha^(−1)(N1),and 220 kg N ha^(−1)(N2))and three plantation methods(artificial transplanting(AT),mechanical transplanting(MT),and mechanical direct-seeding(MD)).The results showed that the N-Si fertilization treatments and all the plantation methods significantly affected the HRY and 2-AP content and related parameters of the two different fragrant rice cultivars.Compared with the Si0N0 treatment,the N-Si fertilization treatments resulted in higher HRY and 2-AP contents.The rates of brown rice,milled rice,head rice,and chalky rice of the fragrant rice also improved with the N-Si fertilization treatments.The N-Si fertilization treatments increased the activities of N metabolism enzymes and the accumulation of N and Si in various parts of the fragrant rice,and affected their antioxidant response parameters.The key parameters for the HRY and 2-AP content were assessed by redundancy analysis.Furthermore,the structural equation model revealed that the Si and N accumulation levels indirectly affected the HRY by affecting the N metabolism enzyme activity,N use efficiency,and grain quality of fragrant rice.Moreover,high N and Si accumulation directly promoted the 2-AP content or affected the antioxidant response parameters and indirectly regulated 2-AP synthesis.The interactions of the MT method with the N-Si fertilization treatments varied in the fragrant rice cultivars in terms of the HRY and 2-AP content,whereas the MD method was beneficial to the 2-AP content in both fragrant rice cultivars under the N-Si fertilization treatments. 展开更多
关键词 fragrant rice 2-AP content head rice yield mechanical planting NITROGEN silicon
下载PDF
A spatiotemporal deep learning method for excavation-induced wall deflections 被引量:1
16
作者 Yuanqin Tao Shaoxiang Zeng +3 位作者 Honglei Sun Yuanqiang Cai Jinzhang Zhang Xiaodong Pan 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第8期3327-3338,共12页
Data-driven approaches such as neural networks are increasingly used for deep excavations due to the growing amount of available monitoring data in practical projects.However,most neural network models only use the da... Data-driven approaches such as neural networks are increasingly used for deep excavations due to the growing amount of available monitoring data in practical projects.However,most neural network models only use the data from a single monitoring point and neglect the spatial relationships between multiple monitoring points.Besides,most models lack flexibility in providing predictions for multiple days after monitoring activity.This study proposes a sequence-to-sequence(seq2seq)two-dimensional(2D)convolutional long short-term memory neural network(S2SCL2D)for predicting the spatiotemporal wall deflections induced by deep excavations.The model utilizes the data from all monitoring points on the entire wall and extracts spatiotemporal features from data by combining the 2D convolutional layers and long short-term memory(LSTM)layers.The S2SCL2D model achieves a long-term prediction of wall deflections through a recursive seq2seq structure.The excavation depth,which has a significant impact on wall deflections,is also considered using a feature fusion method.An excavation project in Hangzhou,China,is used to illustrate the proposed model.The results demonstrate that the S2SCL2D model has superior prediction accuracy and robustness than that of the LSTM and S2SCL1D(one-dimensional)models.The prediction model demonstrates a strong generalizability when applied to an adjacent excavation.Based on the long-term prediction results,practitioners can plan and allocate resources in advance to address the potential engineering issues. 展开更多
关键词 Braced excavation Wall deflections Deep learning Convolutional layer Long short-term memory(LSTM) Sequence to sequence(seq2seq)
下载PDF
Edaravone-loaded poly(amino acid) nanogel inhibits ferroptosis for neuroprotection in cerebral ischemia injury 被引量:1
17
作者 Yunhan Zhang Zhulin Zou +5 位作者 Shuang Liu Fangfang Chen Minglu Li Haoyang Zou Haiyan Liu Jianxun Ding 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2024年第2期89-101,共13页
Neurological injury caused by ischemic stroke is a major cause of permanent disability and death. The currently available neuroprotective drugs fail to achieve desired therapeutic efficacy mainly due to short circulat... Neurological injury caused by ischemic stroke is a major cause of permanent disability and death. The currently available neuroprotective drugs fail to achieve desired therapeutic efficacy mainly due to short circulation half-life and poor blood−brain barrier (BBB) permeability. For that, an edaravone-loaded pH/glutathione (pH/GSH) dual-responsive poly(amino acid) nanogel (NG/EDA) was developed to improve the neuroprotection of EDA. The nanogel was triggered by acidic and EDA-induced high-level GSH microenvironments, which enabled the selective and sustained release of EDA at the site of ischemic injury. NG/EDA exhibited a uniform sub-spherical morphology with a mean hydrodynamic diameter of 112.3 ± 8.2 nm. NG/EDA efficiently accumulated at the cerebral ischemic injury site of permanent middle cerebral artery occlusion (pMCAO) mice, showing an efficient BBB crossing feature. Notably, NG/EDA with 50 µM EDA significantly increased neuron survival (29.3%) following oxygen and glucose deprivation by inhibiting ferroptosis. In addition, administering NG/EDA for 7 d significantly reduced infarct volume to 22.2% ± 7.2% and decreased neurobehavioral scores from 9.0 ± 0.6 to 2.0 ± 0.8. Such a pH/GSH dual-responsive nanoplatform might provide a unique and promising modality for neuroprotection in ischemic stroke and other central nervous system diseases. 展开更多
关键词 Poly(amino acid)nanogel Controlled drug delivery Inhibition of ferroptosis NEUROPROTECTION Cerebral ischenia injury therapy
下载PDF
Review on laser directed energy deposited aluminum alloys 被引量:2
18
作者 Tian-Shu Liu Peng Chen +7 位作者 Feng Qiu Hong-Yu Yang Nicholas Tan Yew Jin Youxiang Chew Di Wang Ruidi Li Qi-Chuan Jiang Chaolin Tan 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2024年第2期84-131,共48页
Lightweight aluminum(Al)alloys have been widely used in frontier fields like aerospace and automotive industries,which attracts great interest in additive manufacturing(AM)to process high-value Al parts.As a mainstrea... Lightweight aluminum(Al)alloys have been widely used in frontier fields like aerospace and automotive industries,which attracts great interest in additive manufacturing(AM)to process high-value Al parts.As a mainstream AM technique,laser-directed energy deposition(LDED)shows good scalability to meet the requirements for large-format component manufacturing and repair.However,LDED Al alloys are highly challenging due to their inherent poor printability(e.g.low laser absorption,high oxidation sensitivity and cracking tendency).To further promote the development of LDED high-performance Al alloys,this review offers a deep understanding of the challenges and strategies to improve printability in LDED Al alloys.The porosity,cracking,distortion,inclusions,element evaporation and resultant inferior mechanical properties(worse than laser powder bed fusion)are the key challenges in LDED Al alloys.Processing parameter optimizations,in-situ alloy design,reinforcing particle addition and field assistance are the efficient approaches to improving the printability and performance of LDED Al alloys.The underlying correlations between processes,alloy innovation,characteristic microstructures,and achievable performances in LDED Al alloys are discussed.The benchmark mechanical properties and primary strengthening mechanism of LDED Al alloys are summarized.This review aims to provide a critical and in-depth evaluation of current progress in LDED Al alloys.Future opportunities and perspectives in LDED high-performance Al alloys are also outlined. 展开更多
关键词 additive manufacturing laser directed energy deposition(LDED) aluminum alloys PRINTABILITY aluminum matrix composite auxiliary fields mechanical properties
下载PDF
Fecal microbiota transplantation for treatment of non-alcoholic fatty liver disease:Mechanism,clinical evidence,and prospect 被引量:1
19
作者 Xiao-Xia Qiu Sheng-Li Cheng +4 位作者 Yan-Hui Liu Yu Li Rui Zhang Nan-Nan Li Zheng Li 《World Journal of Gastroenterology》 SCIE CAS 2024年第8期833-842,共10页
The population of non-alcoholic fatty liver disease(NAFLD)patients along with relevant advanced liver disease is projected to continue growing,because currently no medications are approved for treatment.Fecal microbio... The population of non-alcoholic fatty liver disease(NAFLD)patients along with relevant advanced liver disease is projected to continue growing,because currently no medications are approved for treatment.Fecal microbiota transplantation(FMT)is believed a novel and promising therapeutic approach based on the concept of the gut-liver axis in liver disease.There has been an increase in the number of pre-clinical and clinical studies evaluating FMT in NAFLD treatment,however,existing findings diverge on its effects.Herein,we briefly summarized the mechanism of FMT for NAFLD treatment,reviewed randomized controlled trials for evaluating its efficacy in NAFLD,and proposed the prospect of future trials on FMT. 展开更多
关键词 Non-alcoholic fatty liver disease Fecal microbiota transplantation Randomized controlled trial MECHANISM EFFICACY
下载PDF
Targeted regeneration and upcycling of spent graphite by defect‐driven tin nucleation 被引量:1
20
作者 Zhiheng Cheng Zhiling Luo +7 位作者 Hao Zhang Wuxing Zhang Wang Gao Yang Zhang Long Qie Yonggang Yao Yunhui Huang Kun Kelvin Fu 《Carbon Energy》 SCIE EI CAS CSCD 2024年第4期91-103,共13页
The recycling of spent batteries has become increasingly important owing to their wide applications,abundant raw material supply,and sustainable development.Compared with the degraded cathode,spent anode graphite ofte... The recycling of spent batteries has become increasingly important owing to their wide applications,abundant raw material supply,and sustainable development.Compared with the degraded cathode,spent anode graphite often has a relatively intact structure with few defects after long cycling.Yet,most spent graphite is simply burned or discarded due to its limited value and inferior performance on using conventional recycling methods that are complex,have low efficiency,and fail in performance restoration.Herein,we propose a fast,efficient,and“intelligent”strategy to regenerate and upcycle spent graphite based on defect‐driven targeted remediation.Using Sn as a nanoscale healant,we used rapid heating(~50 ms)to enable dynamic Sn droplets to automatically nucleate around the surface defects on the graphite upon cooling owing to strong binding to the defects(~5.84 eV/atom),thus simultaneously achieving Sn dispersion and graphite remediation.As a result,the regenerated graphite showed enhanced capacity and cycle stability(458.9 mAh g^(−1) at 0.2 A g^(−1) after 100 cycles),superior to those of commercial graphite.Benefiting from the self‐adaption of Sn dispersion,spent graphite with different degrees of defects can be regenerated to similar structures and performance.EverBatt analysis indicates that targeted regeneration and upcycling have significantly lower energy consumption(~99%reduction)and near‐zero CO_(2) emission,and yield much higher profit than hydrometallurgy,which opens a new avenue for direct upcycling of spend graphite in an efficient,green,and profitable manner for sustainable battery manufacture. 展开更多
关键词 battery recycling spent graphite targeted regeneration upcycling graphite
下载PDF
上一页 1 2 100 下一页 到第
使用帮助 返回顶部