期刊文献+

二次检索

题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

年份

学科

期刊

共找到8,841篇文章
< 1 2 250 >
每页显示 20 50 100
A STUDY ON THE MECHANISM AND CHARACTEROF THE INDUSTRIALAND SPATIAL TRANSFERENCE OF FDI IN CHINA
1
作者 LI Guo-ping, YANG Kai-zhong, HE Qi-chun, SUN Tie-shan (Department of Urban and Environmental Sciences, Peking University, Beijing 100871, P. R. China) 《Chinese Geographical Science》 SCIE CSCD 2001年第1期1-10,共10页
In the last two decades, China has become one of the areas that have the greatest potential in industrial production, thus it has ranked second only to USA in the flow of international capital. By the end of 1998, the... In the last two decades, China has become one of the areas that have the greatest potential in industrial production, thus it has ranked second only to USA in the flow of international capital. By the end of 1998, the real value of FDI (Foreign Direct Investment) in China has utilized has added up to $268.1 billion. The big flow of FDI has not only promoted the development of social economy, but also worsened the existing regional difference by choosing spatial location. Under this circumstance, China’s economy faces new restrictions and opportunities while adjusting its regional structure and industrial structure. So it is more and more important for us how to seize the opportunity, to seek the regularity of FDI in choosing location from the aspect of space, to set up relevant strategy to direct FDI at inland regions (areas deficient of capital), and to make appropriate policies, esp. the industrial and regional policies so as for FDI to exert positive influence and avoid negative influence on China and its regional economy and society. Based on the latest domestic and overseas materials and data of the FDI in China, combining with the investigation of the enterprises, this paper has systematically revealed the progress of development of the FDI in China and the developing conditions of the main enterprises directly invested by foreign capital since the reform and opening-up in China. The characters of FDI such as spatial concentration, transference as time goes on, change of the technical content and up-gradation of industrial structure and their forming mechanism have been studied. Then the basic conclusions have been made as follows. Firstly, FDI has been highly concentrated in space. But as time goes by, it has been transferring from coastal regions to inland ones, from big cities to their surrounding districts, and the degree of concentration is decreasing. Secondly, the technical content of the invested projects has gradually increased and the up-gradation of the industrial structure is obvious. Thirdly, the regional choice of the FDI in China is mainly affected by labor and other productive factors. The relative change of the cost of productive factors in different regions since the reform and opening-up is one of the main factors that have caused the spatial transference of the FDI in China. Fourthly, as people’s income increases and the accumulation of the capacity of the technique and labor advances, FDI whose aim is to get more market has increased and tended to transfer from coastal regions to inland ones. Fifthly, the changes of the industrial structure of the main areas and countries who have directly invested in China and the changes of inter-regional industries and regional policies in China are also the important factors that affect the industries directly invested by foreign capital and their spatial transference. 展开更多
关键词 FDI in China industrial transference spatial transference CHARACTER MECHANISM
下载PDF
Inhibition of long non-coding RNA TUG1 on gastric cancer cell transference and invasion through regulating and controlling the expression of miR-144/c-Met axis 被引量:21
2
作者 Ting-Ting Ji Xuan Huang +2 位作者 Jie Jin Sheng-Hua Pan Xiao-Ju Zhuge 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2016年第5期494-498,共5页
Objective: To discuss the expression of long noncoding RNA TUG1 (IneRNA-TUG1) in gastric carcinoma (GC) and its effects on the transferring and invading capacity of gastric carcinoma cells. Methods: Forty cases of car... Objective: To discuss the expression of long noncoding RNA TUG1 (IneRNA-TUG1) in gastric carcinoma (GC) and its effects on the transferring and invading capacity of gastric carcinoma cells. Methods: Forty cases of carcinoma tissue and para-carcinoma tissue were selected from GC patients who underwent surgical removal in Zhejiang Provincial Hospital of Chinese Traditional Medicine and Wenzhou Central Hospital from January, 2013 to December, 2014; the expressing level of IncRNA-TUG I in GC and para-C tissues was detected by applying the qRT-PCR technique. The correlation between IncRNA-TUG1 expression and patients' clinical data was classified and analyzed. SGC-7901 cells were transfected using IncRNA-TUG1 specific siRNA. Changes of the transferring and invading capacity of siRNA-transfected SGC-7901 cells were scratch-tested and transwell-detected. qRT-PCR was applied to detect the expression level of microRNA-144 after IncRNA-TUG1 was silenced. Changes of c-Met mRNA and protein expressions was detected by qRT-PCR and western -blot test. Results: The expression level of lneRNA-TUG1 in GC tissue was significant higher than that in para-C tissue (P<0.05) and the high expression level of IncRNA-TUG1 in GC tissue was significantly correlated with tumor lymph nodes metastasis and advance TNM phasing (/'<0.05). The transferring and invading capacity of SGC-7901 cells was highly inhibited after being transfected by IncRNA-TUG1 specific siRNA (P<0.05). The results of qRT-PCR and western -blot proved that the expression of microRNA-144 was significantly boosted and the expression level of c-Met mRNA and protein was inhibited after IncRNA-TUG1 was silenced (P<0.05). Conclusions: IncRNA-TUG1 shows an up -regulated expression in GC tissue and that bears a correlation with clinicopathological features of malignant tumor. IncRNATUGI can promote the transferring and invading capacity of GC by inhibiting the pathway of microRNA-144/c-Met. 展开更多
关键词 lneRNA-TUG1 Gastric carcinoma transference INVASION microRNA-144 C-MET
下载PDF
Preventing Hg Transference from Soil to Terrestrial Food Chain 被引量:3
3
作者 QINGCHANG-LE MOUSHU-SEN 《Pedosphere》 SCIE CAS CSCD 1993年第1期67-73,共7页
Hg in acid soil could be activited by liming and become available to plant, if excessive or insufficient amount of lime was applied. The changes of Hg activity in acid soil with different rates of CaCO3 amendment Were... Hg in acid soil could be activited by liming and become available to plant, if excessive or insufficient amount of lime was applied. The changes of Hg activity in acid soil with different rates of CaCO3 amendment Were studied by a pot experiment. To predict the adequate amount of lime application, a simple method using the pH (EDTA) as an indicator was suggested. The suitable range of lime application was the amount of lime addition when the pH of soil-EDTA system was.raised to 4.0-4.3. 展开更多
关键词 food chain MERCURY TERRESTRIAL transference
下载PDF
Slurry-like hybrid electrolyte with high lithium-ion transference number for dendrite-free lithium metal anode 被引量:2
4
作者 Hewei Xu Ying He +7 位作者 Zibo Zhang Junli Shi Pingying Liu Ziqi Tian Kan Luo Xiaozhe Zhang Suzhe Liang Zhaoping Liu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2020年第9期375-382,I0011,共9页
Lithium metal anode is regarded as the ultimate choice for next-generation energy storage systems,due to the lowest negative electrochemical potential and super high theoretical specific capacity.However,the growth of... Lithium metal anode is regarded as the ultimate choice for next-generation energy storage systems,due to the lowest negative electrochemical potential and super high theoretical specific capacity.However,the growth of lithium dendrite during the cycling process is still one of the most critical bottlenecks for its application.In this work,a slurry-like hybrid electrolyte is proposed towards the application for lithium metal anode,which is composed of a liquid electrolyte part and a nanometric silane-Al2O3 particle part.The hybrid electrolyte shows high ionic conductivity(3.89×10-3 S cm-1 at 25℃)and lithium-ion transference number(0.88).Especially,the resistance of hybrid electrolyte decreases compared to that of liquid electrolyte,while the viscosity of hybrid electrolyte increases.It is demonstrated that the hybrid electrolyte can effectively suppress the growth of lithium dendrite.Stable cycling of Li/Li cells at a current density up to 1 mA cm-2 is possible.The hybrid electrolyte helps to uniform the lithium ion flux inside the battery and partly comes from the formation of a rigid and highly conductive hybrid interfacial layer on the surface of lithium metal.This work not only provides a fresh way to stabilize lithium metal anode but also sheds light on further research for electrolyte optimization and design of lithium metal battery system. 展开更多
关键词 Hybrid electrolyte SLURRY ORGANIC-INORGANIC Lithium-ion transference number Lithium metal batteries
下载PDF
Hg Vertical Transference in Soil Water System *1 被引量:1
5
作者 GUOYIJUN MOUSUSEN 《Pedosphere》 SCIE CAS CSCD 1998年第2期187-191,共5页
Hg vertical transference in soil water system was studied by analyzing Hg vertical distribution in soil column after adding Hg and one of the two leacheates, deionized water or acid rain, into soil column. The result... Hg vertical transference in soil water system was studied by analyzing Hg vertical distribution in soil column after adding Hg and one of the two leacheates, deionized water or acid rain, into soil column. The results indicated that Hg was hardly transferable in purple soil. About 86%~88% of the total soil Hg was distributed in the top layer (0~2 cm) and no Hg was detected in the leakage when the purple soil column was leached by deionized water and simulated acid rain. But Hg was more movable in yellow soil with only about 20%~22% of the total soil Hg distributed in the top layer (0~2 cm), and about 17%~25% washed out from the soil column by deionized water and simulated acid rain. Increment in soil bulk density could reduce Hg leaching, thus the more the Hg kept in soil, the less the Hg leached into underground water. Deionized water and acid rain almost played the same role in leaching Hg. Bentonite was most efficient in preventing Hg from vertical transferring in the soil column. 展开更多
关键词 HG SOIL vertical transference
下载PDF
The Transference Number 被引量:1
6
作者 Kevin W.Gao Chao Fang +3 位作者 David M.Halat Aashutosh Mistry John Newman Nitash P.Balsara 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2022年第2期366-369,共4页
The performance of rechargeable batteries and other electrochemical systems depends on the rate at which the working ion(often a cation)is transported from one electrode to the other.The cation transference number is ... The performance of rechargeable batteries and other electrochemical systems depends on the rate at which the working ion(often a cation)is transported from one electrode to the other.The cation transference number is an important transport parameter that affects this rate.The purpose of this perspective is to distinguish between approximate and rigorous methods used in the literature to measure the transference number.We emphasize the fact that this parameter is dependent on the reference frame used in the analysis;care must be taken when comparing values obtained from different sources to account for differences in reference frames.We present data obtained from a well-characterized electrolyte.We compare rigorously determined transference numbers in two reference frames with values obtained by an approximate method.We conclude with a qualitative discussion of the relationship between the transference number and salt concentration gradients that are obtained when current is drawn through a battery。 展开更多
关键词 battery electrolytes concentrated solution theory ion transport reference frames transference number
下载PDF
STUDIES ON STRESS TRANSFERENCE MECHANISM OF STEEL FIBRE REINFORCED CONCRETE 被引量:1
7
作者 杨佑发 许绍乾 钟正华 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2001年第4期483-494,共12页
The stress transfer mechanism of steel fibre reinforced concrete is studied. The solutions for the stress and displacement were regarded as the superposition of ' the elementary solutions' and ' the improv... The stress transfer mechanism of steel fibre reinforced concrete is studied. The solutions for the stress and displacement were regarded as the superposition of ' the elementary solutions' and ' the improved solutions'. The elementary solutions were found by using two-dimensional elastic theory and the improved solutions were found by using the Love displacement function method. The calculated results indicate that the solutions possess good convergence. By comparing the three-dimensional solutions with the shear-lag solutions, evident difference may be found. 展开更多
关键词 steel fiber reinforced concrete stress transference elastic theory
下载PDF
Diagenetic and Catagenetic Transference of Noble Metal Elements in Lower Cambrian Black Rock Series, Southwest China 被引量:1
8
作者 LiShengrong GaoZhenmin ShenJunfeng 《Journal of China University of Geosciences》 SCIE CSCD 2004年第1期84-90,共7页
Some extraditional types—black rock series types of platinum group element (PGE), gold and silver mineralization occurrences were found in the Lower Cambrian in Guizhou and Hunan provinces of southwest China where PG... Some extraditional types—black rock series types of platinum group element (PGE), gold and silver mineralization occurrences were found in the Lower Cambrian in Guizhou and Hunan provinces of southwest China where PGE concentration reaches more than 800×10 -6. Sea floor hydrothermal fluid eruption was suggested to have been the main origin of the ore-forming materials. The whole process from the sedimentation to the redistribution of the ore-forming elements occurred on the conditions of intermediate to weak alkaline, weak reduction to weak oxidation. The temperature for the sedimentation and redistribution of the ore-forming elements was lower than 210 ℃. At such a low temperature, inert elements such as PGE, Au and Ag could quite easily be remobilized. 展开更多
关键词 transference of platinum group elements diagenetic and catagenetic periods black rock series China.
下载PDF
TRANSFERENCE AND ACCUMULATIVE PECULIARITY OF ENRICHED URANIUM IN ORGANISM
9
作者 朱寿彭 胡启跃 曹根发 《Nuclear Science and Techniques》 SCIE CAS CSCD 1993年第2期80-85,共6页
Studies show that 235UO2F2 was chiefly localized in kidneys, then in skeleton and liver. Its radioactivity in skeleton rose steadily while the concentration in kidneys and liver droped. 235UO2F2 was difficult to pass ... Studies show that 235UO2F2 was chiefly localized in kidneys, then in skeleton and liver. Its radioactivity in skeleton rose steadily while the concentration in kidneys and liver droped. 235UO2F2 was difficult to pass through the blood- testes barrier. With 1 to 6 h contact period, only 1.4-1.6 % 235UO2F2 was found in the intact skin, but 41-54 % in the abrasive skin. The dynamic retention of 235UO2F2 through intact or abrasive skins was also dominantly localized in kidneys, skeleton and liver. Accumulation of insoluble 235U3O8 in gastrointestinal tract was well described by a double- exponential- term expression. Values of retention were estimated for fast component T1= 0.34 d, and for relatively long term component T2= 4.05 d. 展开更多
关键词 transference Accumulation Enriched uranium Intact SKIN Abrasive SKIN TESTES
下载PDF
Transference Principles for the Series of Semigroups with a Theorem of Peller
10
作者 Simon Joseph Ahmed Sufyan +1 位作者 Hala Taha Ranya Tahir 《Advances in Pure Mathematics》 2019年第2期164-204,共41页
A general approach to transference principles for discrete and continuous sequence of operators (semi) groups is described. This allows one to recover the classical transference results of Calderon, Coifman and Weiss ... A general approach to transference principles for discrete and continuous sequence of operators (semi) groups is described. This allows one to recover the classical transference results of Calderon, Coifman and Weiss and of Berkson, Gilleppie and Muhly and the more recent one of the author. The method is applied to derive a new transference principle for (discrete and continuous) the sequence of operators semigroups that need not be grouped. As an application, functional calculus estimates for bounded sequence of operators with at most polynomially growing powers are derived, leading to a new proof of classical results by Peller from 1982. The method allows for a generalization of his results away from Hilbert spaces to -spaces and—involving the concept of γ-boundedness—to general spaces. Analogous results for strongly-continuous one-parameter (semi) groups are presented as well by Markus Haase [1]. Finally, an application is given to singular integrals for one-parameter semigroups. 展开更多
关键词 transference OPERATOR SEMIGROUP Functional Calculus Analytic BESOV Peller γ-Boundedness γ-Radonifying γ-Summing Power-Bounded OPERATOR
下载PDF
Cultural Transference of Plant and Animal Images in Shijing Translation
11
作者 ZHENG Jing-jing BI Hui-xue ZHENG Da-hua 《Journal of Literature and Art Studies》 2016年第7期736-743,共8页
As one of the Confucian classics, Shijing (i~) occupies a pivotal position in the development of Chinese culture. This paper makes a comparative study on the English translation of plant and animal images in Shijing... As one of the Confucian classics, Shijing (i~) occupies a pivotal position in the development of Chinese culture. This paper makes a comparative study on the English translation of plant and animal images in Shijing, trying to reveal the cultural connotations in them and to suggest some translation strategies for the correct transference of cultural implications in plant and animal images in the poems of this ancient book. 展开更多
关键词 Shijing translation cultural transference plant images animal images
下载PDF
Transference Kinetics of Radionuclide <sup>95</sup>Nb in the Aquatic Ecosystem
12
作者 Xiyue Zhao Lei Huang +1 位作者 Zhiqiang Cai Shouxiang Wang 《World Journal of Nuclear Science and Technology》 2014年第2期88-95,共8页
The dynamics of transportation, accumulation, diminishment and distribution of 95Nb in a simulated aquatic ecosystem was studied using the isotope-tracer technique, and a fitting equation was established by applicatio... The dynamics of transportation, accumulation, diminishment and distribution of 95Nb in a simulated aquatic ecosystem was studied using the isotope-tracer technique, and a fitting equation was established by application of a closed, five-compartment model. The results showed that when 95Nb was introduced into an aquatic system, it was transported and transformed via deposition in combination with other ions, and adsorption and absorption by aquatic organisms, resulting in redistribution and accumulation in different parts of the organisms. Following addition, the spe- cific activity of 95Nb in water decreased sharply within a short time, and then after reaching a certain value, it decreased more slowly. Sediment accumulated large amounts of 95Nb through the exchange of ions. Hyacinth (Eichhornia crassipes) also adsorbed a large amount of 95Nb in a short period of time. Snails (Bellamya purificata) and fish (Carassius auratus) were found to have a poor adsorption capacity of 95Nb. The amount of 95Nb found in the snail flesh was greater than that in the shell, and the 95Nb found in the fish was mainly distributed in the viscera. The amount of 95Nb in each individual component of the experimental system was affected over time. 展开更多
关键词 95Nb transference ENRICHMENT Distribution Water SEDIMENT Hyacinth SNAIL Fish
下载PDF
Chloride transference during electrochemical chloride extraction process 被引量:6
13
作者 YAO Wu & ZHAO Zheng Key Laboratory of Advanced Civil Engineering Materials (Tongji University),Ministry of Education of China,Shanghai 200092,China 《Science China(Technological Sciences)》 SCIE EI CAS 2010年第6期1466-1470,共5页
Chemical titration method and lab-made chloride probes were jointly adopted to investigate the effects of water-to-cement (W/C) ratio and the impressed current density on chloride transport for cement-based materials ... Chemical titration method and lab-made chloride probes were jointly adopted to investigate the effects of water-to-cement (W/C) ratio and the impressed current density on chloride transport for cement-based materials during electrochemical chloride extraction (ECE) process.The dissolution of bound chlorides and the effect of current density on dissolution were analyzed.The variations of chloride concentration at different depths and the chloride transference process were monitored.Test results show that W/C ratios adopted have slight influence on chloride extraction,while chloride extraction efficiency is mainly determined by the impressed current density.During ECE process a portion of bound chloride ions dissolved and the amount of bound chlorides released is directly proportional to current density. 展开更多
关键词 ELECTROCHEMICAL CHLORIDE EXTRACTION transference BOUND CHLORIDE current DENSITY
原文传递
Strategies to enhance Li^(+) transference number in liquid electrolytes for better lithium batteries 被引量:3
14
作者 Pan Zhou Xiaokun Zhang +1 位作者 Yong Xiang Kai Liu 《Nano Research》 SCIE EI CSCD 2023年第6期8055-8071,共17页
Growing market demand from portable electronics to electric automobiles boosts the development of lithium-ion batteries(LIBs)with high energy density and rate performance.However,strong solvation effect between lithiu... Growing market demand from portable electronics to electric automobiles boosts the development of lithium-ion batteries(LIBs)with high energy density and rate performance.However,strong solvation effect between lithium ions(Li^(+))and solvent molecules in common electrolytes limits the mobility of Li^(+)ions in electrolytes.Consequently,anions dominate the charge conduction in electrolytes,and in most cases,the value of Li^(+)transference number(T_(+))is between 0.2 and 0.4.A low T_(+)will aggravate concentration polarization in the process of charging and discharging,especially at high rate,which not only increases the overpotential but also intensifies side reactions,along with uneven deposition of lithium(Li)and the growth of lithium dendrites when lithium metal is used as anode.In this review,promising strategies to improve T_(+)in liquid electrolytes would be summarized.The migration of Li^(+)ions is affected directly by the types and concentration of lithium salts,solvents,and additives in bulk electrolytes.Besides,Li^(+)ions will pass through the separator and solid electrolyte interphase(SEI)when transferring between anodes and cathodes.With this in mind,we will classify and summarize threads of enhancing T_(+)from five aspects:lithium salts,solvents,additives,separators,and SEI based on different mechanisms,including covalently bonding,desolvation effect,Lewis acid-base interaction,electrostatic interaction,pore sieving,and supramolecular interaction.We believe this review will present a systematic understanding and summary on T_(+)and point out some feasible threads to enhance battery performance by enhancing T_(+). 展开更多
关键词 lithium batteries Li^(+)transference number rate performance STRATEGIES MECHANISMS
原文传递
A highly ionic transference number eutectogel hybrid electrolytes based on spontaneous coupling inhibitor for solid-state lithium metal batteries 被引量:3
15
作者 Linnan Bi Xiongbang Wei +5 位作者 Yuhong Qiu Yaochen Song Xin Long Zhi Chen Sizhe Wang Jiaxuan Liao 《Nano Research》 SCIE EI CSCD 2023年第1期1717-1725,共9页
Polymer-based solid electrolytes have been extensively studied for solid-state lithium metal batteries to achieve high energy density and reliable security.But,its practical application is severely limited by low ioni... Polymer-based solid electrolytes have been extensively studied for solid-state lithium metal batteries to achieve high energy density and reliable security.But,its practical application is severely limited by low ionic conductivity and slow Li+transference.Herein,based on the“binary electrolytes”of poly(vinylidene fluoride-chlorotrifluoroethylene)(P(VDF-CTFE))and lithium salt(LiTFSI),a kind of eutectogel hybrid electrolytes(EHEs)with high Li+transference number was developed via tuning the spontaneous coupling of charge and vacated space generated by Li-cation diffusion utilizing the Li6.4La3Zr1.4Ta0.6O12(LLZTO)dopant.LLZTO doping promotes the dissociation of lithium salt,increases Li+carrier density,and boosts ion jumping and the coordination/decoupling reactions of Li+.As a result,the optimized EHEs-10%possess a high Li-transference number of 0.86 and a high Li+conductivity of 3.2×10–4 S·cm–1 at room temperature.Moreover,the prepared EHEs-10%composite solid electrolyte presents excellent lithiumphilic and compatibility,and can be tested stably for 1,200 h at 0.3 mA·cm–2 with assembled lithium symmetric batteries.Likewise,the EHEs-10%films match well with high-loading LiFePO4 and LiCoO2 cathodes(>10 mg·cm–2)and exhibit remarkable interface stability.Particularly,the LiFePO4//EHEs-10%//Li and LiCoO2//EHEs-10%//Li cells deliver high rate performance of 118 mAh·g–1 at 1 C and 93.7 mAh·g–1 at 2 C with coulombic efficiency of 99.3%and 98.1%,respectively.This work provides an in-depth understanding and new insights into our design for polymer electrolytes with fast Li+diffusion. 展开更多
关键词 poly(vinylidene fluoride-chlorotrifluoroethylene)(P(VDF-CTFE)) Li6.4La3Zr1.4Ta0.6O12(LLZTO) ionic transference numbers eutectic solvent composite electrolytes solid state lithium metal battery
原文传递
Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats
16
作者 Yunting Xiang Xiangxin Xing +6 位作者 Xuyun Hua Yuwen Zhang Xin Xue Jiajia Wu Mouxiong Zheng He Wang Jianguang Xu 《Neural Regeneration Research》 SCIE CAS 2025年第5期1495-1504,共10页
Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected limb.However,differences among reconstruction strategies at the brain network lev... Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected limb.However,differences among reconstruction strategies at the brain network level have not been elucidated.This study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve transfer.Sprague–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper trunk.Resting-state brain functional magnetic resonance imaging was obtained 7 months after surgery.The independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the component.Alterations in intra-network resting-state functional connectivity were compared among the groups.Target muscle reinnervation was assessed by behavioral observation(elbow flexion)and electromyography.The results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural pathway.Nerve repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor representation.The thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve transfer.Brain areas related to cognition and emotion were enhanced after end-to-side nerve transfer.Our study revealed important brain networks related to different nerve reconstructions.These networks may be potential targets for enhancing motor recovery. 展开更多
关键词 brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity
下载PDF
Brachioradialis tendon transfer and palmaris longus tendon graft for thumb avulsion:A case report and review of literature
17
作者 Pierre Curings Sonia Ramos-Pascual +4 位作者 Kinga Michalewska Nicolas Gibert Lionel Erhard Mo Saffarini AlexisNogier 《World Journal of Clinical Cases》 SCIE 2025年第4期48-55,共8页
BACKGROUND Thumb replantation following complete traumatic avulsion requires complex techniques to restore function,especially in cases of avulsion at the level of the metacarpophalangeal joint(MCP I)and avulsion of t... BACKGROUND Thumb replantation following complete traumatic avulsion requires complex techniques to restore function,especially in cases of avulsion at the level of the metacarpophalangeal joint(MCP I)and avulsion of the flexor pollicis longus(FPL)at the musculotendinous junction.Possible treatments include direct tendon suture or tendon transfer,most commonly from the ring finger.To optimize function and avoid donor finger complications,we performed thumb replantation with flexion restoration using brachioradialis(BR)tendon transfer with palmaris longus(PL)tendon graft.CASE SUMMARY A 20-year-old left-handed male was admitted for a complete traumatic left thumb amputation following an accident while sliding from the top of a handrail.The patient presented with skin and bone avulsion at the MCP I,avulsion of the FPL tendon at the musculotendinous junction(zone 5),avulsion of the extensor pollicis longus tendon(zone T3),and avulsion of the thumb’s collateral arteries and nerves.The patient was treated with two stage thumb repair.The first intervention consisted of thumb replantation with MCP I arthrodesis,resection of avulsed FPL tendon and implantation of a silicone tendon prosthesis.The second intervention consisted of PL tendon graft and BR tendon transfer.Follow-up at 10 months showed good outcomes with active interphalangeal flexion of 70°,grip strength of 45 kg,key pinch strength of 15 kg and two-point discrimination threshold of 4 mm.CONCLUSION Flexion restoration after complete thumb amputation with FPL avulsion at the musculotendinous junction can be achieved using BR tendon transfer with PL tendon graft. 展开更多
关键词 Brachioradialis tendon transfer Flexor pollicis longus Palmaris longus tendon graft REPLANTATION Thumb amputation Thumb avulsion Case report
下载PDF
Imidacloprid-induced transference effect on some elements in rice plants and the brown planthopper Nilaparvata lugens (Hemiptera: Delphacidae)
18
作者 Samer Azzam Fan Yang Jin-Cai Wu Jin Geng Guo-Qing Yang 《Insect Science》 SCIE CAS CSCD 2011年第3期289-297,共9页
The widespread use ofimidacloprid against insect pests has not only increased the rate of the development of target pest resistance but has also resulted in various negative effects on rice plants and Nilaparvata luge... The widespread use ofimidacloprid against insect pests has not only increased the rate of the development of target pest resistance but has also resulted in various negative effects on rice plants and Nilaparvata lugens resurgence. However, the effect of imidacloprid on elements in rice plants and the transference of these element changes between rice and N. lugens are currently poorly understood. The present study investigated changes ofCu, Fe, Mn, Zn, Ca, K, Mg and Na contents in rice plants following imidacloprid foliar sprays in the adult female ofN./ugens that develops from nymphs that feed on treated plants and honeydew produced by females. The results indicated that imidacloprid foliar spray significantly increased Fe and K contents in leaf sheaths. Generally, Fe, Mn, K and Na contents in leaf blades were noticeably decreased, but Ca contents in leaf blades for ! 0 and 30 mg/kg imidacloprid treatments were significantly increased. The contents of most elements except K and Mg in the adult females and honeydew were significantly elevated. Multivariate statistical analysis showed that Fe, Mn and Na in leaf blades and Fe and Mn in leaf sheaths could be proportionally transferred to N. lugens. The relationship between most elements in adult female bodies and in the honeydew showed a positive correlation coefficient. There were significant differences in the contents of some elements in rice plants and N. lugens from different regions. 展开更多
关键词 ELEMENTS IMIDACLOPRID Nilaparvata lugens rice plant transference effect
原文传递
TRANSFERENCE OF TEACHING AND PRACTICE OF REVISION FROM CHINESE TO ENGLISH
19
作者 Xie Ze-rong Hunan Educational Institute 《Chinese Journal of Applied Linguistics》 1997年第1期75-79,共5页
Among the four language skills,writing is the most clifficult to master.For second language(L2)learners,learning to write well presents the greatest challenge.It is even harder.As an L2 learnerand teacher,I have on on... Among the four language skills,writing is the most clifficult to master.For second language(L2)learners,learning to write well presents the greatest challenge.It is even harder.As an L2 learnerand teacher,I have on one hand experienced such difficulties in English writing as misspelling,grammatical errors,illogical organisation,a lack of vocabulary and sentence variety and a lack ofcohesion and focus.On the other hand,many similarities between Chinese and English writingtechniques are found in both classical and modern Chinese literature,writing modes and methodology.Both Chinese and English use writing techniques like comparison-contrast,cause-effect,illustration,description,narration,analogy,pun,irony,euphemism,parallelism and onomatopoeia.In 展开更多
关键词 transference OF TEACHING AND PRACTICE OF REVISION FROM CHINESE TO ENGLISH work
原文传递
Hydrogen-bonded organic framework modified separator for simultaneously enhancing the safety and electrochemical performance of Ni-rich lithium-ion battery
20
作者 Chengyu Han Yu Cao +9 位作者 Ming Yang Yuhan Wang Di Tang Shaojie Zhang Yiran Jia Yiming Zhang Hern Kim Fusheng Pan Zhongyi Jiang Jie Sun 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第9期72-78,共7页
Nickel-rich layered oxide cathode(LiNi_(x)Co_(y)Mn_(1−x−y)O_(2),x>0.5,NCM)shows substantial potential for applications in longer-range electrical vehicles.However,the rapid capacity decay and serious safety concern... Nickel-rich layered oxide cathode(LiNi_(x)Co_(y)Mn_(1−x−y)O_(2),x>0.5,NCM)shows substantial potential for applications in longer-range electrical vehicles.However,the rapid capacity decay and serious safety concerns impede its practical viability.This work provides a hydrogen-bonded organic framework(HOF)modification strategy to simultaneously improve the electrochemical performance,thermal stability and incombustibility of separator.Melamine cyanurate(MCA),as a low-cost and reliable flame-retardant HOF,was implemented in the separator modification layer,which can prevent the battery short circuit even at a high temperature.In addition,the supermolecule properties of MCA provide unique physical and chemical microenvironment for regulating ion-transport behavior in electrolyte.The MCA coating layer enabled the nickel-rich layered oxide cathode with a high-capacity retention of 90.3%after 300 cycles at 1.0 C.Collectively,the usage of MCA in lithium-ion batteries(LIBs)affords a simple,low-cost and efficient strategy to improve the security and service life of nickel-rich layered cathodes. 展开更多
关键词 Hydrogen-bonded organic framework Modified separator Ni-richlayered oxide cathode Thermal runaway Li^(+)transference number
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部