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| 1 | Distribution of green algae micro-propagules and their function in the formation of the green tides in the coast of Qinhuangdao,the Bohai Sea, China显示文摘Since 2015, a novel green tide has been recurring in the coastal areas of Qinhuangdao at the western coast of the Bohai Sea in China, threatening the environment and ecosystem of the Beidaihe seaside holiday resort along the coast. Micro-propagules of the green algae including gametes, spores, micro-germlings and micro-vegetative fragments play an important role in the formation of green tides. They serve as a 'seed source' of green macroalgae, and their distributions could reflect and influence the 'algae source' of green tides. In this study,monthly surveys in the inshore and offshore areas of the Qinhuangdao coast were conducted from April to September 2016 and in January 2017 to investigate the tempo-spatial distribution patterns and the biomass variations of the green algae micro-propagules. The obtained results show that micro-propagules were mainly distributed in the inshore areas with a significantly decreasing abundance towards offshore areas. Their biomass was highest in July and August, and lowest in winter. The areas that were affected by the green tides showed a remarkably higher abundance of micro-propagules compared to other areas. These micro-propagules could serve as the 'seed' source of green tides. Their distribution patterns indicate that the green tide in the coastal areas of Qinhuangdao originated locally. | Hongbin Han Wei Song Zongling Wang Dewen Ding Chao Yuan Xuelei Zhang Yan Li | 2019 | Acta Oceanologica Sinica2019，38，8： | 8 |
| 2 | Magnetic labeling of natural lipid encapsulations wit ron-based nanoparticles显示文摘 | Dewen Ye Yan Li Ning Gu | 2018 | Nano Research2018，11，6： | 6 |
| 3 | Anti-rutting performance evaluation of modified asphalt binders: A review显示文摘Asphalt pavement inevitably suffers rutting distress induced by repeated loads under high temperatures, which can be effectively alleviated by the modification of asphalt binders.This paper summarized the asphalt modifiers for enhancing the performance of asphalt pavement at high temperatures in terms of the modifier type, additive amount and improving effect. Then, the anti-rutting performance evaluation methods of asphalt binder were introduced with details, including the ring and ball(R&B) test, the dynamic viscosity test, the zero/low shear viscosity(ZSV/LSV) test, the dynamic shear rheometer(DSR) test,the repeated creep and recovery(RCR) test, and the multiple stress creep and recovery(MSCR) test. Furthermore, the sensitivity of the evaluation method to asphalt modifier was analyzed using the normalization method. It was found that the indicators from the MSCR test could clearly reveal the influence of asphalt modifiers on high temperature performance of asphalt binder. But it still had some limitations affecting the accuracy of evaluation results, such as the number of creep-recovery cycles, the stress level and the recovery time. In addition, according to the rutting resistance improvement ratio(RRIR),the styrene-butadiene-styrene(SBS) modifier performed better in improving the rutting resistance of asphalt binder, compared with other modifiers when added within the usual dosage range. | Yan Li Peiwen Hao Chaozhi Zhao Jwnqiang Ling Tao Wu Dewen Li Jingwen Liu Bowei Sun | 2021 | Journal of Traffic and Transportation Engineering(English Edition)2021，8，3： | 4 |
| 4 | The contribution of attached Ulva prolifera on Pyropia aquaculture rafts to green tides in the Yellow Sea显示文摘Green tides caused by the unusual accumulation of high floating Ulva prolifera have occurred regularly in the Yellow Sea since 2007.The primary source of the Yellow Sea green tides is the attached algae on the Pyropia aquaculture rafts in the Subei Shoal.Ulva prolifera and Blidingia(Italic)sp.are the main species observed on Pyropia aquaculture rafts in the Subei Shoal.We found that U.prolifera has strong buoyancy and a rapid growth rate,which may explain why it is the dominant species of green tides that occur in the China's sea area of the Yellow Sea.The growth rate of floating U.prolifera was about 20%–31%d–1,which was much higher than Blidingia(Italic)sp.There were about 1.7×104 t of attached algae on the Pyropia aquaculture rafts in May 2012.We found that 39%of attached algae could float when the tide rose in the Subei Shoal,and U.prolifera accounted for 63%of the floating algae.Our analysis estimated that about 4000 t of attached U.prolifera floated into the surrounding waters of the Subei Shoal during the recycling period of aquaculture rafts.These results suggest that the initial floating biomass of large-scale green tides in the Yellow Sea is determined by the U.prolifera biomass attached to Pyropia aquaculture rafts,further impacting the scale of the green tide。 | Hongbin Han Shiliang Fan Wei Song Yan Li Jie Xiao Zongling Wang Xuelei Zhang Dewen Ding | 2020 | Acta Oceanologica Sinica2020，39，2： | 3 |
| 5 | Right anterior cingulate gyrus in encephalic region associated with integrating and processing Chinese words information in working memory: A functional magnetic resonance imaging study显示文摘BACKGROUND: Many experimental results have been found in previous studies on whether laterality of brain cingulate gyrus exists in processing Chinese words information. OBJECTIVE: To observe the function of right anterior cingulate gyrus and activation showed by MRI in processing Chinese words in a visual working memory judgment tasks, and evaluate the laterality of activated brain regions. DESIGN: Observation experiment. SETTING: The Medical Psychological Research Center, Second Xiangya Hospital of Central South University. PARTICIPANTS: Thirteen healthy volunteers (7 males and 6 females), aged (29±7)years ranging from 23 to 36 years old, participated in this fMRI study during August 2003 to Febuary 2004. They gave informed consent in accordance with guidelines set by Second Xiangya Hospital of Central South University. All subjects were native Chinese speakers and strongly right handed. METHODS: In this study, Chinese numeral words were used as test materials and test mode of Sternberg was used in cognitive task, it was aimed to investigate the encephalic region involved in the storage and processing of Chinese numerical information. ①The head of subject was fixed with dense foam pad. Visual working task was performed according to the requests. Verbal working task was that the subject saw target items for four numerals written in Chinese, presenting for 1.5 s and then, after a short time by blank for 3.0 s. The subject saw one numeral presenting for 1.5 s and had to press one button if it was one of the shown numbers and another button if it did not belong to the presented numbers. There were two visual working memory stimuli in each stimulation block. The experiment was conducted in a single run, which consisted of seven blocks of visual working memory tasks. Different Chinese numerals were displayed in each block to avoid any practice effect (The response rate of the whole working memory task was 50%). ②The activation of brain was scanned with a 1.5T MRI scanner (GE Signa Twinspeed) (slice thickness 5 mm, slice gap 1.5 mm, slice parallel to line between pars geniculate and splenium in corpus callosum from corona capitis to superior part of cerebellum, totally 16 to 18 layers). ③The obtained images were pre-processed and statistically analysed with SPM 99 software. The procedure included timeslice adjusted, realigned, nomalized and smoothed. According to experimental task, data from each subject were analysed to obtain t value of each voxel. Brain activation image was got by Student’s t test and statistic was presented by pseudo-color. Statistical parameter image was formed by overlapping brain activation image on three-dimensional structure image, and the threshold value was set at P < 0.05 with ten or more continous voxels (T ≥ 4.64, K ≥ 10 voxels). The brain activation images of all the subjects were calculated and overlapped into mean brain activation images. The regions with different activation density were found out. The activation voxels in regions-of-interest were checked to calculate a laterality index for each condition. The negative value indicated right hemisphere dominance. MAIN OUTCOME MEASURES: fMRI activation and laterality coefficient of Chinese numerial working task. RESULTS: Thirteen healthy subjects participated in the result analysis. ①fMRI activation of Chinese numerial working task: The results showed that the working memory task with Chinese words not only activated left cerebral cortex including left superior frontal gyrus (BA6/10), left middle frontal gyrus (BA9), left inferior frontal gyrus (BA45/9/47), but also activated right cerebral cortex including right middle frontal gyrus (BA10/46/8), right inferior frontal lobe (BA47). Specially, peak activation was located in right anterior cingulate gyrus (BA32) with an activation volume of 879 (voxels). It indicated that superior, middle and inferior frontal gyrus, bilateral Broca regions and anterior cingutate involved in the working memory of Chinese words. ②Asymmertry index : The asymmetry index was -0.47 for frontal lobe, +0.42 for temporal lobe, +0.14 for parietal lobe and -1.00 for occipital lobe. It indicated that the right frontal lobe, left temporal lobe, left parietal lobe and right occipital lobe were more involved in the Chinese numerial working task. CONCLUSION: Brain activation in processing Chinese words in the visual working memory task broadly involves both the left and right hemisphere cortex. And right anterior cingulate gyrus (BA 32) plays an important role in integrating and processing intensive visuospatial ability. | Daxing Wu Lirong Yan Changlian Tan Dewen Hu Wai Cheong Carl Tam Yadong Liu Zongtan Zhou Xiang Wang Ding Liu Shuqiao Yao | 2006 | Neural Regeneration Research2006，1，5： | 2 |
| 6 | Combined apatite fission-track dating, chlorine and REE content analysis by LA-ICPMS显示文摘As one of the best established low temperature thermochronology techniques,apatite fission-track(AFT)analysis has proved an important tool for constraining a wide variety of upper crustal processes,e.g.,landscape evolution,hydrocarbon exploration and tectonics[1].The most common method employed for AFT analysis is the external detector method(EDM)[1]and this involves the thermal neutron irradiation of samples for determination of | Jianzhang Pang Dewen Zheng Yan Ma Ying Wang Ying Wu Jinglin wan Jingxing Yu Youjuan Li Yizhou Wang | 2017 | Science Bulletin2017，62，22： | 2 |
| 7 | Brain activation regions in schizophrenia patients performing the game piece memory task显示文摘BACKGROUND:Go,a traditional Chinese chess-like game,requires many unknown functions of the brain including attention,imaging,problem solving and processing of spatial working memory. To date,it remains uncertain whether the intellectual activities required to play Go are related to the frontal lobe. OBJECTIVE:To investigate various patterns of brain region activity while schizophrenic patients and normal subjects engaged in memorizing piece placement in the Chinese game of Go.Spatial working memory was measured in order to validate whether the prefrontal lobe participates in this memory process. DESIGN,TIME AND SETTING:Non-randomized,concurrent control trial was performed at Second Xiangya Hospital of Central South University,between May and December 2004. PARTICIPANTS:A total of nine Chinese schizophrenic patients with no brain or bodily diseases and not undergoing electroshock treatment,who were in accordance with the DSM-Ⅳcriteria for schizophrenia,as well as thirteen healthy staffs and students with matched age,sex,and education were included.Patients and control subjects had no neurological disorders or mental retardation.In addition,all participants were right-handed. METHODS:The cognitive task for functional magnetic resonance imaging was a block design experiment.Both groups were asked to remember the placement of pieces in the Chinese game of Go on a computer screen.A brain activation map was analyzed in SPM99. MAIN OUTCOME MEASURES:Brain responses were compared with regard to activation region size,volume,and asymmetry indices. RESULTS:Compared with the control group,the reaction time was significantly delayed in schizophrenics performing the working memory task(P<0.05).When performing the tasks, normal subjects showed significant activation of the bilateral dorsolateral prefrontal lobe with left dominance;the asymmetry indices were:frontal lobe,+0.32;temporal lobe,0.58;parietal lobe, 0.41;and occipital lobe,-0.34.On the other hand,schizophrenics showed right dominance and had a broader activation region of the prefrontal lobe(asymmetry indices:frontal lobe,-0.10; temporal lobe,+0.38;parietal lobe,+0.24;and occipital lobe,0.00).When comparing the normal group subtracted with the schizophrenic group,no significant lateralization was found in the frontal lobes but significant activation was found in the left anterior central gyrus,left middle frontal gyrus and in both sides of the cingulate gyrus.Comparing the schizophrenic group subtracted with the normal group,there was significant right lateralization of the frontal lobe and abnormally activated regions on both sides of the anterior central gyrus,middle frontal gyrus,left inferior frontal gyrus, right medial frontal gyrus and the right insular lobe. CONCLUSION:Different brain activation regions are involved in memorizing the placement of pieces in Chinese Go between schizophrenia and healthy subjects.Schizophrenics showed right dominance and border activation range,indicating that the prefrontal cortex plays an important role in memory information processing and resource allocation when remembering piece placement in the game of Go. | Daxing WU Huifang Yin Lirong Yan Changlian Tan Dewen Hu Shuqiao Yao | 2009 | Neural Regeneration Research2009，4，2： | 1 |
| 8 | ^(40)Ar/^(39)Ar Geochronology of Weathering Process in the Tu-Ha Basin,Northwest China显示文摘The Asian interior contains the most regionally extensive areas of mid-latitude deserts and semi-deserts in the word,and its timing and forcing mechanisms of aridification has attracted much attention.The Tu-Ha Basin is one of the major hyperarid areas in the northwestern China;however,the initiation and history of aridification of this basin have been poorly understood. | YANG Jing CHEN Wen ZHENG Dewen YANG Li ZHANG Yan LIU Xinyu | 2015 | Acta Geologica Sinica(English Edition)2015，89，6： | 1 |
| 9 | Distributions of surface sediments surrounding the Antarctic Peninsula and its environmental significance显示文摘We analyzed grain size composition to provide information on the types and distributions as well as depositional varieties of marine surface sediments from the area surrounding the Antarctic Peninsula. The samples retrieved from the study area contain gravel, sand, silt and clay. As suggested by bathymetry and morphology, the study area is characterized by neritic, hemipelagic and pelagic deposits. The glacial-marine sediments can be divided into two types, residual paratill and compound paratill, which are primarily transported by glaciers and as ice-rafted debris. Ocean current effects on deposition are more obvious, and the deposit types are distributed consistently with terrain variations. | WANG Chunjuan CHEN Zhihua LI Chunshun DU Dewen YAN Shijuan ZHU Zhiwei | 2014 | Advances in Polar Science2014，25，3： | 1 |
| 10 | Oral biomaterials for intestinal regulation显示文摘Intestinal diseases have always been a highly focused concern since recorded.Although endless efforts have been devoted,the underlying pathogenesis of alimentary canal disease remains mysterious and effective therapies are still in development.Intriguingly,the emerging of biomedical engineering has sprung up to unveil the enigmas of alimentary canal diseases,thus ameliorating the therapies and relieving the sufferings of patients.In this review,we present a comprehensive and deep-going perception into therapies of digestive disease with the assistance of biomaterials,involving the constructions of biomaterials and their mechanisms in digestive disease therapy.This review aims at conveying fundamentals of biomaterials in treating alimentary canal diseases,a critical analysis of their current applications and challenges,and a perspective on their future development.It is believed that this review will facilitate the communications between material science and medical fields. | Cheng Zhao Lijun Cai Hanxu Chen Hui Tan Dewen Yan | 2021 | Engineered Regeneration2021，2，1： | 1 |
| 11 | Vacancy engineering induced reaction kinetics enhancement of cobalt metaphosphate for pH-universal hydrogen evolution显示文摘Developing efficient pH-universal hydrogen evolution reaction(HER)catalysts is critical in the field of water electrolysis,however,which is severely hampered by the sluggish kinetics in alkaline media.Herein,a ruthenium(Ru)incorporation induced vacancy engineering strategy is firstly proposed to precisely construct oxygen vacancy(V_(O))-riched cobalt-ruthenium metaphosphate(CRPO)for high-efficiency pH-universal HER.The V_(O) modifies the electronic structure,improves the superficial hydrophilic and gas spillover capacity,it also reduces the coordination number of Ru atoms and regulates the coordination environment.Theoretical calculations indicate that Ru tends to adsorb H_(2)O and H^(*),whereas V_(O) tends to adsorb OH^(-),which greatly promotes the H_(2)O adsorption and the dissociation of HO-H bond.Ultimately,CRPO-2 exhibits remarkable HER performance,the mass activity is about 18.34,21.73,and 38.07 times higher than that of Pt/C in acidic,neutral,and alkaline media,respectively,at the same time maintain excellent stability.Our findings may pave a new avenue for the rational design of electrocatalysts toward pH-universal water electrolysis. | Yuting Chen Tian Meng Zhicai Xing Yueying Yan Yang Yang Bohan Yao Dewen Wang Xiurong Yang | 2024 | Nano Research2024，17，5： | 0 |
| 12 | Atomic-level coupled RuO_(2)/BaRuO_(3) heterostructure for efficient alkaline hydrogen evolution reaction显示文摘The slow water dissociation is the rate-determining step that slows down the reaction rate in alkaline hydrogen evolution reaction(HER).Optimizing the surface electronic structure of the catalyst to lower the energy barrier of water dissociation and regulating the binding strength of adsorption intermediates are crucial strategy for boosting the catalytic performance of HER.In this study,RuO_(2)/BaRuO_(3)(RBRO)heterostructures with abundant oxygen vacancies and lattice distortion were in-situ constructed under a low temperature via the thermal decomposition of gel-precursor.The RBRO heterostructures obtained at 550℃ exhibited the highest HER activity in 1 M KOH,showing an ultra-low overpotential of 16 mV at 10 mA cm^(-2)and a Tafel slope of 33.37 m V dec^(-1).Additionally,the material demonstrated remarkable durability,with only 25 mV of degradation in overpotential after 200 h of stability testing at 10 mA cm^(-2).Density functional theory calculations revealed that the redistribution of charges at the heterojunction interface can optimize the binding energies of H*and OH*and effectively lower the energy barrier of water dissociation.This research offers novel perspectives on surpassing the water dissociation threshold of alkaline HER catalysts by means of a systematic design of heterogeneous interfaces. | Yueying Yan Tian Meng Yuting Chen Yang Yang Dewen Wang Zhicai Xing Xiurong Yang | 2024 | Journal of Energy Chemistry2024，88，1： | 0 |
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