检索结果-南通市图书馆

Journal of Environmental Sciences 2010年第7期22卷 1080-1085页

作者： Ulrico J.López-Chuken scott d.young division of Environmental Sciences School of ChemistryUniversidad Autónoma de Nuevo León division of Agricultural & Environmental Sciences School of Biosciencesthe University of Nottingham

A controlled hydroponic experiment was undertaken to investigate Cd uptake in relation to the activity of Cd species in solution other than the free ion （Cd^2＋） by maintaining a constant Cd^2＋ activity under variable SO4^2- and Cl^- concentrations exposed to maize （Zea mays vat. Cameron） plants. The objectives of these experiments were：（1） to distinguish and quantify the different uptake rates of free and inorganic-complexed Cd from nutrient solution, and （2） to model the uptake of Cd by maize with a Biotic Ligand Model （BLM） in a system which facilitates the close examination of root characteristics. Results of the current experiments suggest that, in addition to the free ion, CdSO4^0 complexes are important factors in determining Cd uptake in nutrient solution by maize plants. Higher nominal SO4^2- concentrations in solution generally resulted in a greater Cd accumulation by maize plants than predicted by the Cd^2＋ activity. A better integration of the complete dataset for the 3 harvest times （6, 9 and 11 days after treatment） was achieved by including consideration of both the duration of Cd exposure and especially the root surface area to express Cd uptake. Similarly, the fit of the BLM was also improved when taking into account exposure time and expressing uptake in terms of root morphological parameters.

关键词： free ion activity model biotic ligand model root surface area Cd complexation metal exposure time hydroponics plant uptake

在线全文

学校读者我要写书评

暂无评论

地球化学模型在污染土壤中的初步应用研究

地球化学模型在污染土壤中的初步应用研究

Exploring the effects of coronary artery disease as a preexisting comorbidity on mortality in hospitalized septic patients:a retrospective observation study

2015年中国环境科学学会学术年会

作者：毛凌晨 scott d.young Elizabeth H.Bailey 上海理工大学环境与建设学院 University of Nottingham School of Bioscience United Kingdom LE125Rd

近年来,地球化学模型——WHAM 6.0开始在土壤元素的形态分析上得到应用。然而现有的研究中很少对这类研究的可行性进行分析讨论。应用地球化学模型软件WHAM 6.0对两组不同污染源土壤的理化性质、金属溶解度进行模拟,并与实测值进行比较... 详细信息

近年来,地球化学模型——WHAM 6.0开始在土壤元素的形态分析上得到应用。然而现有的研究中很少对这类研究的可行性进行分析讨论。应用地球化学模型软件WHAM 6.0对两组不同污染源土壤的理化性质、金属溶解度进行模拟,并与实测值进行比较分析,初步探讨了地球化学模型在污染土壤研究中的应用。结果表明,当输入变量为Zn与Cd的E-值(同位素可交换含量)时,模型能较好的预测其在土壤溶液中的浓度(Zn与Cd的RSd分别为0.33与0.42)。相对于中性土壤,模型对酸性土壤的预测效果较好。因此,WHAM 6.0更适用于预测富含有机质的酸性土壤,而对于含铁锰氧化物与石灰质较多的碱性土壤,金属溶解度的预测值普遍偏大。

关键词：地球化学模型腐殖酸矿物氧化物同位素可交换含量

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Emergency and Critical Care Medicine 2024年第2期4卷 47-51页

作者： Anmol Multani Greg Stahl Kerry Johnson scott Goade Robert d.Arnce College of Osteopathic Medicine Kansas City UniversityJoplinMOUSA department of data Improvement Freeman Health SystemJoplinMOUSA department of Mathematics Missouri Southern State UniversityJoplinMOUSA department of Pharmacy Freeman Health SystemJoplinMOUSA

Background:Sepsis has high prevalence and mortality rate,and it is imperative to identify populations at risk of poor sepsis *** patients with preexisting chronic comorbidities are shown to have worse sepsis *** identifying comorbidities with greater influence on sepsis progression,we can direct limited resources to septic patients with comorbidities and reduce health care *** comorbidities can impact the risk of developing sepsis and having worse *** artery disease(CAd)is a common comorbidity,especially in the elderly,and a leading cause of death *** wished to investigate the influence of CAd as a comorbidity on sepsis and hypothesized that preexisting CAd would increase mortality in hospitalized septic ***:We conducted retrospective observational study using patient data from Freeman Health System in Joplin,*** analyzed patient records from Freeman Health System database from January 1,2019,to June 30,*** patients were identified using the International Classification of diseases,Tenth Revision sepsis *** identify septic patients with preexisting CAd,we used International Classification of diseases,Tenth Revision codes for *** compared mortality rates for septic patients with and without ***:Two-sample proportion test was conducted to test the difference in mortality between septic patients with and without preexisting *** difference in mortality for the total population was−0.016(P=0.553).In the male and female subgroups,the differences in mortality were 0.0122(P=0.739)and−0.0511(P=0.208),*** differences in mortality in patients aged 40 to 64 years and 65 years and older were−0.0077(P=0.870)and 0.0007(P=0.983),*** statistical tests failed to find significant differences when comparing septic patients with and without preexisting *** was no significant difference in the age and sex ***:Our study showed that CAd alone was n

关键词： Comorbidity Coronary artery disease Inflammation Mortality rate in sepsis prognosis Sepsis

Promoting public health through the 2024 Compendium of Physical Activities:Strategies for adults,older adults,and wheelchair users

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 Sport and Health Science 2024年第6期13卷 739-742页

作者： Stephen d.Herrmann scott A.Conger Erik A.Willis Barbara E.Ainsworth Kansas Center for Metabolism and Obesity Research University of Kansas Medical CenterKansas CityKS 66160USA division of Physical Activity and Weight Management Department of Internal MedicineUniversity of Kansas Medical CenterKansas CityKS 66160USA department of Kinesiology Boise State UniversityBoiseID 83725USA Prevention Research Center University of North Carolina at Chapel HillChapel HillNC 27599USA College of Health Solutions Arizona State UniversityPhoenixAZ 85003USA School of Exercise and Health Shanghai University of SportShanghai 200438China

Physical activity(PA)is fundamentally linked to public health,^(1)providing benefits including chronic disease prevention and treatment,^(2)mental health,^(3)musculoskeletal health,^(4)and healthy aging,^(5)along with socioeconomic advantages.^(6)These benefits highlight the importance of promoting PA for all *** recent publication of the Compendium of Physical Activities(Compendium)serves as a valuable resource,^(7)offering an updated and expanded guide for adults(ages 19-59)with tailored energy cost values for diverse populations.

关键词： Activities prevention offering

Tailoring Classical Conditioning Behavior in TiO_(2) Nanowires:ZnO Qds-Based Optoelectronic Memristors for Neuromorphic Hardware

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第7期16卷 265-280页

作者： Wenxiao Wang Yaqi Wang Feifei Yin Hongsen Niu young-Kee Shin Yang Li Eun-Seong Kim Nam-young Kim School of Information Science and Engineering University of JinanJinan 250022People’s Republic of China RFIC Centre NDAC CentreKwangwoon UniversityNowon-guSeoul 139-701South Korea department of Electronics Engineering Kwangwoon UniversityNowon-GuSeoul 139-701South Korea School of Microelectronics Shandong UniversityJinan 250101People’s Republic of China department of Molecular Medicine and Biopharmaceutical Sciences Seoul National UniversitySeoul 08826South Korea

Neuromorphic hardware equipped with associative learn-ing capabilities presents fascinating applications in the next generation of artificial ***,research into synaptic devices exhibiting complex associative learning behaviors is still ***,an optoelec-tronic memristor based on Ag/TiO_(2) Nanowires:ZnO Quantum dots/FTO was proposed and constructed to emulate the biological associative learning *** implementation of synaptic behaviors,including long and short-term plasticity,and learning-forgetting-relearning behaviors,were achieved in the device through the application of light and electrical *** the optoelectronic co-modulated characteristics,a simulation of neuromorphic computing was conducted,resulting in a handwriting digit recognition accuracy of 88.9%.Furthermore,a 3×7 memristor array was constructed,confirming its application in artificial visual *** importantly,complex biological associative learning behaviors were emulated by mapping the light and electrical stimuli into conditioned and unconditioned stimuli,*** training through associative pairs,reflexes could be triggered solely using light ***-sively,under specific optoelectronic signal applications,the four features of classical conditioning,namely acquisition,extinction,recovery,and generalization,were elegantly *** work provides an optoelectronic memristor with associative behavior capabilities,offering a pathway for advancing brain-machine interfaces,autonomous robots,and machine self-learning in the future.

关键词： Artificial intelligence Classical conditioning Neuromorphic computing Artificial visual memory Optoelectronic memristors ZnO Quantum dots

2024 Wheelchair Compendium of Physical Activities:An update of activity codes and energy expenditure values

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第1期13卷 18-23页

作者： scott A.Conger Stephen d.Herrmann Erik A.Willis Tom E.Nightingale Joseph R.Sherman Barbara E.Ainsworth department of Kinesiology Boise State UniversityBoiseID 83725USA Kansas Center for Metabolism and Obesity Research The University of Kansas Medical CenterKansas CityKS 66160USA Center for Health Promotion and disease Prevention University of North Carolina at Chapel HillChapel HillNC 27599USA School of Sport Exercise and Rehabilitation SciencesUniversity of BirminghamBirmingham AL B152TTUK Centre for Trauma Sciences Research University of BirminghamEdgbastonBirmingham AL B152TTUK College of Health Solutions Arizona State UniversityPhoenixAZ 85003USA School of Exercise and Health Shanghai University of SportShanghai 200438China

Purpose:This paper presents an update of the 2011 Wheelchair Compendium of Physical Activities designed for wheelchair users and is referred to as the 2024 Wheelchair *** Wheelchair Compendium aims to curate existing knowledge of the energy expenditure for wheelchair physical activities(PAs).Methods:A systematic review of the published energy expenditure of PA for wheelchair users was completed between 2011 and May *** added these data to the 2011 Wheelchair Compendium data that was compiled previously in a systematic review through ***:A total of 47 studies were included,and 124 different wheelchair PA reported energy expenditure values ranging from 0.8 metabolic equivalents for wheelchair users(filing papers,light effort)to 11.8 metabolic equivalents for wheelchair users(Nordic sit skiing).Conclusion:In introducing the updated 2024 Wheelchair Compendium,we hope to bridge the resource gap and challenge the prevailing narratives that inadvertently exclude wheelchair users from physical fitness and health PAs.

关键词： disability Exercise MET Mobility

Recent progress and future research directions for electrochromic zinc-ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 220-232,I0007页

作者： Tae Gwang Yun Byungil Hwang Jun young Cheong department of Molecular Science and Technology Ajou UniversitySuwon 16499Republic of Korea School of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea Bavarian Center for Battery Technology(Bay Batt)and department of Chemistry University of Bayreuth95447 BayreuthGermany

In recent times,future energy storage systems demand a multitude of functionalities beyond their traditional energy storage *** line with this technological shift,there is active research and development of electrochromic-energy storage systems designed to visualize electrochemical charging and discharging *** conventional electrochromic-energy storage devices primarily integrated supercapacitors,known for their high power density,to enable rapid color ***,the low energy density of supercapacitors restricts overall energy storage capacity,acting as a significant barrier to expanding the application range of such *** this review,we introduce electrochromic zinc(Zn)-ion battery systems,which effectively overcome the limitation of low energy density,and provide illustrative examples of their applicability across diverse *** many recent research works are present for electrochromic Zn-ion batteries,little review has so far taken *** objective is to discuss on the current progress and future directions for electrochromic Zn-ion batteries,which are applicable for wearable electronics applications and energy storage *** review provides an initial milestone for future researchers in electrochromic energy storage and zinc-ion batteries,which will lead to a stream of future works related to them.

关键词： Electrochromic Zn-ion battery Flexible Transition metal oxide Conductive polymer

Hydrangea serrata extract exerts tumor inhibitory activity against hepatocellular carcinoma HepG2 cells via inducing p27/CdK2-mediated cell cycle arrest and apoptosis

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2024年第2期14卷 65-72,I0002-I0005页

作者： Ye-eun Kim Jeonghye Hwang Ki-young Kim Graduate School of Biotechnology Kyung Hee UniversitySeocheonGiheungYonginGyeonggi-do 446-701Republic of Korea department of Genetics and Biotechnology College of Life SciencesKyung Hee UniversitySeocheonGiheungYonginGyeonggi-do 446-701Republic of Korea

Objective:To examine the inhibitory effect of Hydrangea serrata extract against hepatocellular carcinoma HepG2 cells and its underlying ***:The effects of Hydrangea serrata extract on growth inhibition of tumor cells and spheroids were assessed using MTT and 3d culture *** real-time PCR and Western blot analyses were employed to investigate the changes in mRNA and protein expression levels of molecules related to cell cycle and ***:Hydrangea serrata extract effectively inhibited the growth of both tumor cells and *** extract also significantly upregulated p27 mRNA expression and downregulated CdK2 mRNA expression,leading to cell cycle ***,increased BAX/Bcl-2 ratio as well as caspase-9 and-3 were observed after treatment with Hydrangea serrata extract,indicating the induction of tumor cell ***:Hydrangea serrata extract has the potential to alleviate tumors by effectively modulating cell-cycle-related gene expressions and inducing apoptosis,thereby inhibiting tumor growth.

关键词： Hydrangea serrata Hepatocellular carcinoma Liver cancer Anticancer Cell cycle arrest Apoptosis

direct 4d printing of functionally graded hydrogel networks for biodegradable,untethered,and multimorphic soft robots

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第2期6卷 407-416页

作者： Soo young Cho dong Hae Ho Sae Byeok Jo Jeong Ho Cho department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Republic of Korea department of Mechanical Engineering Virginia TechBlacksburgVA 24061United States of America School of Chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single *** robotics can become one of the largest beneficiaries of these advances,through the design of a facile four-dimensional(4d)FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed ***,we present a simple binder jetting approach for the 4d printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiphase feeder *** graded cross-linking agents gradually form stable porous network structures within aqueous polymer particles,enabling programmable hygroscopic deformation without complex mechanical ***,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and untethered soft robot with stark stimulus *** biodegradability of the proposed 4d-printed soft robot further ensures the sustainability of our approach,with immediate degradation rates of 96.6%within 72 *** proposed 4d printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.

关键词： intelligent and sustainable additive manufacturing multi-material four-dimensional printing untethered soft robot multi-stimuli-responsive soft robot biodegradable soft robotics

dual in-situ observation of tribochemical and morphological evolution of single-layer WS_(2)and multi-layer WS_(2)/C coatings

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第7期12卷 1580-1598页

作者： Yuzhen LIU Jae-Ho HAN Shusheng XU young Chan JUNG dae-Eun KIM State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China department of Mechanical Engineering Yonsei UniversitySeoul03722Republic of Korea Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai 264000China Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering Yantai 264000China

The outstanding tribological performance of transition metal dichalcogenides(TMds)is attributed to their unique sandwich microstructure and low interlayer shear *** advantageous structure allows TMds to demonstrate exceptional friction reduction ***,the incorporation of TMds and amorphous carbon(a-C)in multi-layer structures shows excellent potential for further enhancing tribological and anti-oxidation *** carbon,known for its high ductility,chemical inertness,and excellent wear resistance,significantly contributes to the overall performance of these multi-layer *** gain an in-depth understanding of the tribological mechanism and evolution of TMds’multi-layer coatings,a dual in-situ analysis was carried out using a tribometer equipped with a 3d laser microscope and a Raman *** innovative approach allowed for a comprehensive evolution of the tribological,topographical,and tribochemical characteristics of both single-layer WS_(2)and multi-layer WS_(2)/C coatings in real *** findings from the dual in-situ tribotest revealed distinct failure characteristics between the single-layer WS_(2)coating and the multi-layer WS_(2)/C *** single-layer WS_(2)coating predominantly experienced failure due to mechanical removal,whereas a combination of mechanical removal and tribochemistry primarily influenced the failure of the multi-layer WS_(2)/C *** tribological evolution process of these two coatings can be classified into four stages on the basis of their tribological behavior:the running-in stage,stable friction stage,re-deposition stage,and lubrication failure *** stage represents a distinct phase in the tribological behavior of the coatings and contributes to our understanding of their behavior during sliding.

关键词： In-situ analysis multi-layer coating tribology tribochemistry