检索结果-南通市图书馆

Hydrochemical Dynamic Characteristics and Evolution of Underground Brine in the Mahai Salt Lake of the Qaidam Basin Qinghai-Tibet Plateau

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2018年第5期92卷 1981-1990页

作者： HU shuya ZHAO Quansheng WANG Guangcai ZHANG Jianwei FENG Juan Department of Environmental Science and Engineering Qingdao University School of Water Resources and Environment China University of Geosciences

The mineral rock salts present in the Mahai Salt Lake of the Qaidam basin exhibit high solubilities in water. In addition, the multicomponent underground brine exhibits a high salinity and is easily precipitated. In the natural state, brine transport in the brine layer is extremely slow, and the brine is in a relatively stable chemical equilibrium state with the rock salt media. However, during mining, both the seepage and the chemical fields fluctuate significantly, thereby disrupting the equilibrium and leading to variations in the chemical composition and dynamic characteristics of the brine. Therefore, we selected underground brine from the Mahai Salt Lake, collecting a total of 183 brine samples over three stages of mining（i.e., the early stage of underground brine extraction, the initial stage of mining, and the later stage of mining）. Using a range of analytical techniques, the chemical dynamics of the underground brine water and its evolution were systematically studied. We found that evaporation and enrichment were the main mechanisms of underground brine evolution in the Mahai Salt Lake, with cation exchange and mineral dissolution/precipitation being key factors in determining the dynamic characteristics and evolution of the brine.

关键词： Hydrochemical dynamics evolution exploitation process underground brine Mahai Salt Lake Qinghai-Tibet Plateau

Estimation of the Reflection of Internal Tides on a Slope

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2020年第3期19卷 489-496页

作者： WANG shuya CAO Anzhou CHEN Xu LI Qiang SONG Jinbao MENG Jing Key Laboratory of Physical Oceanography Qingdao Collaborative Innovation Center of Marine Science and Technology(CIMST)Ocean University of Chinaand Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China Ocean College Zhejiang UniversityZhoushan 316021China Graduate School at Shenzhen Tsinghua UniversityShenzhen 518055China College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China

Reflection occurs when internal tides impact on a steep continental slope. Separating reflected internal tide signals from incident ones is crucial to develop the parameterization of internal tide-driven turbulent mixing on the continental slopes. In this study, the performances of three different methods for estimating internal tide reflections are examined by using two different cases. The Hilbert transform-based method is found to be more suitable than two other methods for both cases considered in this study. The two other methods are effective for westward-propagating mode-1 internal tides impacting a slope, but inappropriate in the case where internal tides radiate from a Gaussian ridge impact the slope because of their inaccurate estimation of incident internal tides in the latter case. Such inaccurate estimation further influences the extraction of reflected signals and calculation of the reflected and cross term of energy fluxes. In addition, it should be noted that, due to the use of filtering, the method based on Hilbert transform may result in slight bias when assessing the incident and reflected signals near topographic features.

关键词： internal tide reflection continental slope Hilbert transform energy flux filtering

Enhanced singlet oxygen generation by hybrid Mn-doped nanocomposites for selective photo-oxidation of benzylic alcohols

在线全文

学校读者我要写书评

暂无评论

Nano Research 2020年第6期13卷 1668-1676页

作者： Zhi-Jun Li shuya Li Andrew Hunter Davis Elan Hofman Gyu Leem Weiwei Zheng Department of Chemistry Syracuse UniversitySyracuseNY13244USA Department of Chemistry State University of New York College of Environmental Science and ForestrySyracuseNY13210USA The Michael M.Szwarc Polymer Research Institute SyracuseNY13210USA

Transition-metal ions doped nanocrystals(NCs),specifically Mn-doped NCs,hold great potential in the field of photocatalysis,especially,to improve photocatalytic performance for singlet oxygen(1O2)***,we report the design of a novel Mn-doped NC-based nanocomposites,specifically,silica-coated Mn-doped CdS/ZnS NCs decorated with Pt NCs(denoted as Mn-NCs@SiO2-Pt),which enhance photocatalytic 1O2 *** to the long-lived Mn excited state(on the order of ms),the energy-transfer between Mn-NCs and molecular oxygen is facilitated with the assistance of the Pt NCs adhered to the Mn-NC@SiO2 ***,the Mn-NCs@SiO2-Pt composites,integrate the advantages of Mn-doped NCs,a protective silica layer,and Pt NCs to exhibit excellent catalytic activity and selectivity for the selective oxidation of primary benzylic alcohols to aldehydes through an 1O2 engaged oxidation process under visible-light *** work paves the way for enhancing catalytic performance via facilitated energy transfer relaxation by utilizing the long-lived excited-state of Mn2+dopant ions in nanocomposites.

关键词： doped nanocrystals energy transfer photocatalysis singlet oxygen selective oxidation

Direct contact moxibustion promotes apoptosis of gastric cancer cells in rats by regulating intestinal flora

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2021年第6期41卷 943-952页

作者： PAN Lijia MA shuya WEN Jing ZHANG Xiaoqi XING Haijiao JIA Chunsheng College of Acupuncture and Moxibustion Hebei University of Chinese MedicineShijiazhuang 050200China

OBJECTIVE:To examine whether direct contact moxibustion(DCM)can prevent and treat gastric cancer(GC)by regulating intestinal flora in ***:Male Wistar rats were randomly divided into normal group,normal+DCM control group,model group,and model+DCM *** cancer rats were induced by N-methyl-N-nitro-N-nitrosoguanidine(MNNG,20 mg/mL)by *** the same time,the model rats and normal rats were given DCM at Zusanli(ST36),Weishu(BL21),and Zhongwan(CV12)for 16 *** treatment,gastric tissues were collected to analyze the pathological changes and the apoptosis of gastric mucosa *** addition,the cecal stool was taken and analyzed by 16 s r RNA ***:Gastric cancer-like pathological changes and different abundance of the intestinal flora were found in the model *** promoted mucosa tissue apoptosis and regulated the abnormal changes of the intestinal microflora caused by MNNG;DCM also inhibited the growth of Ruminococcaceae and Prevotellaceae flora and promoted the growth of probiotic ***,DCM made the composition and abundance of intestinal microflora in the GC rats tending to the normal ***:DCM stimulating Zusanli(ST36),Weishu(BL21),and Zhongwan(CV12)promoted the apoptosis of gastric mucosa and delayed the progression of gastric cancer,possibly by decreasing Ruminococcaceae and Prevotellaceae bacteria(bacteria that produce short-chain fatty acids in the intestine)and promoting the growth of probiotic Akkermansia.

关键词： moxibustion methylnitronitrosoguanidine stomach neoplasms gastrointestinal microbiome

在线全文

学校读者我要写书评

暂无评论

党参铺膜施肥移栽联合作业机的设计与试验

农机化研究 2025年第4期47卷 192-196页

作者：王一珺郑书雅康清华赵建托刘鹏霞甘肃省农业机械化技术推广总站兰州730046

针对党参等根茎类中药材移栽种植机械化程度低等问题,分析了国内外各根茎类作物移栽机的工作方法及结构特点,设计了一种党参半自动移栽设备,实现深耕、施肥、移栽(人工辅助放苗)、覆膜为一体的联合作业。以中药材党参为参考进行田间测试... 详细信息

针对党参等根茎类中药材移栽种植机械化程度低等问题,分析了国内外各根茎类作物移栽机的工作方法及结构特点,设计了一种党参半自动移栽设备,实现深耕、施肥、移栽(人工辅助放苗)、覆膜为一体的联合作业。以中药材党参为参考进行田间测试,从而掌握移栽机的性能及结构特点,为根茎类中药材移栽机实现国产研发推广提供参考。

关键词：党参铺膜施肥移栽联合作业机

Enrichment process of lanthanum as a nonessential trace element in leaf cells of lettuce(Lactuca sativa L.)

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2022年第12期40卷 1969-1976,I0006页

作者： Mengzhu Cheng Xin Wang Yue Ben shuya Zhang Lihong Wang Qing Zhou Xiaohua Huang National and Local Joint Engineering Research Center of Biomedical Functional Materials Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China Center for Plant Cell Biology Institute of Integrative Genome Biologyand Department of Botany and Plant SciencesUniversity of CaliforniaRiversideCA92521USA State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China

Rare earth elements(REEs)as nonessential trace elements are enriched in living organisms and threaten their *** early detect and reduce REE enrichment in living organisms,scientists are focused on clarifying the enrichment process of REEs in living organisms and its ***,the enrichment process of REEs in edible plant cells has remained ***,by using interdisciplinary methods and techniques,the enrichment process of lanthanum(La(Ⅲ))in the leaf cells of lettuce(Lactuca sativa L.)was investigated.(1)When La(Ⅲ)exposure dose is 0.5-5μmol/L,La(Ⅲ)is enriched outside the plasma membrane(PM).In this zone,La(Ⅲ)is bound to vitronectin-like protein(VN)to form La-VN complexes;(2)When La(Ⅲ)exposure dose is 5-20μmol/L,besides the zone outside the PM,La(Ⅲ)is also enriched on the PM and bound to arabinogalactan proteins(AGPs)to form La-AGPs complexes;(3)When La(Ⅲ)exposure dose is 20-140μmol/L,besides the zone outside and on the PM,La(Ⅲ)is enriched inside the PM;(4)When La(Ⅲ)exposure dose is 60-140μmol/L,malondialdehyde content(an important indicator of invisible damage)significantly ***,as La(Ⅲ)exposure dose increases,La(Ⅲ)gradually migrates from outside the PM to the PM and inside the PM,enriching in these zones in *** enriched La(Ⅲ)will cause invisible damage to lettuce leaf cells and even enter human bodies along food *** results provide references for investigating the enrichment process of REEs in plants and its environmental risks,and finding strategies to early detect and reduce REE enrichment in plants.

关键词： Nonessential trace element Lanthanum exposure Lettuce leaf cell Enrichment process Vitronectin-like protein Arabinogalactan proteins

Reteplase versus alteplase for acute ischaemic stroke within 4.5 hours(RAISE):rationale and design of a multicentre,prospective,randomised,open-label,blinded-endpoint,controlled phase 3 non-inferiority trial

在线全文

学校读者我要写书评

暂无评论

Stroke & Vascular Neurology 2024年第5期9卷 568-573页

作者： shuya Li Hong-Qiu Gu Hongguo Dai Guozhi Lu Yongjun Wang Department of Neurology and Department of Clinical Trial CenterBeijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Emergency Linfen Central HospitalShanxi ProvinceChina Department of Neurology Keshiketeng Banner Traditional Chinese Medicine Mongolian Medical HospitalThe Inner Mongolia autonomous regionChina

Background and purpose Reteplase is the third generation of alternative thrombolytic *** hypothesis that reteplase will be non-inferior to alteplase in achieving excellent functional outcome at 90 days among eligible patients with acute ischaemic *** and design Reteplase versus alteplase for acute ischaemic stroke within 4.5hours(RAISE)trial is a multicentre,prospective,randomised,open-label,blinded endpoint(PROBE),controlled phase 3 non-inferiority trial.A total of 1412 eligible patients will be randomly assigned to receive either reteplase at a dose of 18 mg+18mg or alteplase 0.9mg/kg at a ratio of 1:*** independent data monitoring committee will review the trail’s progress and safety *** outcomes The primary efficacy outcome of this study is proportion of individuals attaining an excellent functional outcome,defined as modified Rankin Scale(mRS)0–1 at 90 *** secondary efficacy outcomes encompass favourable functional outcome defined as mRS 0–2,major neurological improvement on the National Institutes of Health Stroke Scale,ordinal distribution of mRS and Barthel Index score of at least 95 points at 90 *** primary safety outcomes are symptomatic intracranial haemorrhage at 36 hours within 90 *** The RAISE trial will provide crucial insights into the selection of thrombolytic agents for stroke *** registration number NCT05295173.

关键词： centre endpoint random

Tailoring crystal plane of short-process regenerated LiFePO_(4) towards enhanced rate properties

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第12期99卷 458-465页

作者： shuya Lei Jiexiang Li Lei Hu Dongbin Qiao Wei Sun Peng Ge Yue Yang School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Central South UniversityChangsha 410083HunanChina Guangxi Huayou Resources Recycling Technology Co. LtdYulin 537006GuangxiChina Huayou New Energy Technology Co. LtdQuzhou 324000ZhejiangChina

Captured by the environmental and economic value,the recycling of spent lithium iron phosphate(LFP)batteries has attracted numerous ***,hydrometallurgical method still suffers from complex process,and hydrothermal method is limited by morphology control,ascribed to the strong polarity of ***,supported by ethanol as crystal surface modifier,the regular(010)orientation and short b-axis are effectively tailored for regenerated *** Li-storage cathode,the capacities of as-optimized LFP could reach up to 157.07 mA h g^(-1)at 1 C,and the stable capacity of 150.50 mA h g^(-1)could be remained with retention of 93.48%after 400 cycles at 1 *** at 10 C,their capacity could be still kept about 119.3 m A h g^(-1).Assisted by the detail analysis of adsorption energy,the clear growth mechanism is proposed,the lowest adsorbing energy(-4.66 eV)of ethanol on(010)crystal plane renders the ordered growth along(010)crystal *** this,the work is expected to shed light on the tailoring mechanism of internal plane about regenerated materials,whilst providing effective strategies for highperformance regenerated LFP.

关键词： Spent lithium-ion battery LiFePO_(4) Regeneration Crystal orientation Electrochemical performance

Artificial intelligence empowering research on loneliness, depression and anxiety-Using Covid-19 as an opportunity

在线全文

学校读者我要写书评

暂无评论

Journal of Safety Science and Resilience 2023年第4期4卷 396-409页

作者： Qijian Zheng Feng Liu shuya Xu Jingyi Hu Haixing Lu Tingting Liu School of Computer Science and Technology East China Normal University3663 Zhongshan North RoadShanghai200062China New York University Shanghai No.567Yangsi West RoadPudong DistrictShanghai200126China School of Psychology and Cognitive Science East China Normal University3663 Zhongshan North RoadShanghai200062China Shanghai Key Laboratory of Mental Health and Psychological Crisis Intervention School of Psychology and Cognitive ScienceEast China Normal University3663 Zhongshan North RoadShanghai200062China Faculty of Economics and Management East China Normal University3663 Zhongshan North RoadShanghai200062China

The COVID-19 pandemic has had a profound impact on public mental health,leading to a surge in loneliness,depression,and *** these public psychological issues increasingly become a factor affecting social *** researchers explore ways to address these issues,artificial intelligence(AI)has emerged as a powerful tool for understanding and supporting mental *** this paper,we provide a thorough literature review on the emotions(EMO)of loneliness,depression,and anxiety(EMO-LDA)before and during the COVID-19 ***,we evaluate the application of AI in EMO-LDA research from 2018 to 2023(AI-LDA)using Latent Dirichlet Allocation(LDA)topic *** analysis reveals a significant increase in the proportion of literature on EMO-LDA and AI-LDA before and during the COVID-19 *** also observe changes in research hotspots and trends in both ***,our results suggest that the collaborative research of EMO-LDA and AI-LDA is a promising direction for future *** conclusion,our review highlights the urgent need for effective interventions to address the mental health challenges posed by the COVID-19 *** findings suggest that the integration of AI in EMO-LDA research has the potential to provide new insights and solutions to support individuals facing loneliness,depression,and *** we hope that our study will inspire further research in this vital and revelant domin.

关键词： COVID-19 Loneliness Depression Anxiety EMO-LDA AI-LDA Computational affection