检索结果-南通市图书馆

Exploring innovative synthetic solutions for advanced polymer-based electrochromic energy storage devices:Phenoxazine as a promising chromophore

引用

Journal of Energy Chemistry 2024年第4期91卷 433-452页

作者： Catalin-Paul Constantin Mihaela Balan-Porcarasu gabriela Lisa “Petru Poni”Institute of Macromolecular Chemistry Electroactive Polymers&Plasmochemistry Laboratory41A Grigore Ghica Voda AlleyIasi 700487Romania “Gh.Asachi”Technical University Iasi Faculty of Chemical EngineeringBd.Mangeron 71Iasi 700050Romania

The current investigation offers an innovative synthetic solution regarding electrochromic(EC)and energy storage applications by exploring phenoxazine(POZ)***,three POZ-based polymers(polyimide,polyazomethine,and polyamide)were synthesized to ascertain the superior *** polyamide exhibited remarkable attributes,including high redox stability during 500 repetitive CVs,optical contrast of 61.98%,rapid response times of 1.02 and 1.38 s for coloring and bleaching,EC efficiency of 280 cm^(2)C^(-1).and decays of the optical density and EC efficiency of only 12.18%and 6.23%after 1000 ***,the energy storage performance of polyamide PA was tested,for which the following parameters were obtained:74.7 F g^(-1)(CV,scan rate of 10 mV s^(-1))and 118 F g^(-1)(GCD,charging current of 0.1 A g^(-1)).Then,the polyamide was tested in EES devices,which yielded the following EC parameters:an optical contrast of 62.15%,response times of 9.24 and 5.01 s for coloring and bleaching,EC efficiency of 178 cm^(2)C^(-1),and moderate decays of 20.25%and 23.24%for the optical density and EC efficiency after 500 *** energy storage performance included a capacitance of 106 F g^(-1)(CV,scan rate of 0.1 mV s^(-1))and 9.23 F g^(-1)(GCD,charging current of 0.1 A g^(-1)),capacitance decay of 11.9%after500 cycles,and 1.7 V retention after 2 ***,two EES devices connected in series powered a 3 V LED for almost 30 s.

关键词： Polymers Phenoxazine Electrochromic Energy storage Electrochromi cenergy storage devices

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Retinoic acid signaling acts as a rheostat to balance Treg function

引用

Cellular & Molecular Immunology 2022年第7期19卷 820-833页

作者： Govindarajan Thangavelu gabriela andrejeva Sara Bolivar-Wagers Sujeong Jin Michael C.Zaiken Michael Loschi Ethan G.Aguilar Scott N.Furlan Chrysothemis C.Brown Yu-Chi Lee Cameron McDonald Hyman Colby J.Feser Angela Panoskaltsis-Mortari Keli L.Hippen Kelli P.MacDonald William J.Murphy Ivan Maillard Geoffrey R.Hill David H.Munn Robert Zeiser Leslie S.Kean Jeffrey C.Rathmell Hongbo Chi Randolph J.Noelle Bruce R.Blazar Department of Pediatrics Center for ImmunologyUniversity of MinnesotaMinneapolisMNUSA Center for Immunobiology Vanderbilt University Medical CenterNashville TNUSA Department of Pediatrics University of WashingtonSeattleWAUSA Fred Hutchinson Cancer Research Center SeattleWAUSA Howard Hughes Medical Institute Immunology Program and Ludwig CenterSloan Kettering InstituteMemorial Sloan Kettering Cancer CenterNew YorkNYUSA Department of Microbiology and Immunology.Geisel School of Medicine at Dartmouth Norris Cotton Cancer CenterLebanonUSA Department of Immunology Queensland Institute of Medical Research(QIMR)Berghofer Medical Research Institute and School of MedicineUniversity of QueenslandBrisbaneQLDAustralia Departmentof Dermatology School of MedicineUniversity of California DavisSacramentoCAUSA Division of Hematology/Oncology Department of MedicineUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA Georgia Cancer Center Augusta UniversityAugustaGAUSA Department of Haematology Oncology and Stem Cell TransplantationFaculty of MedicineFreiburg University Medical CentreFreiburgGermany Boston Children's Hospital and the Dana-Farber Cancer Institute BostonMAUSA Department of Immunology St.Jude Children's ResearchHospitalMemphisTNUSA

Regulatory T cells(Tregs)promote immune homeostasis by maintaining self-tolerance and regulating inflammatory *** certain inflammatory conditions,Tregs can lose their lineage stability and *** studies have reported that ex vivo exposure to retinoic acid(RA)enhances Treg function and ***,it is unknown how RA receptor signaling in Tregs influences these processes in ***,we employed mouse models in which RA signaling is silenced by the expression of the dominant negative receptor(DN)RARαin all T *** the fact that DNRARαconventional T cells are hypofunctional,Tregs had increased CD25 expression,STAT5 pathway activation,mTORC1 signaling and supersuppressor ***,DNRARαTregs had increased inhibitory molecule expression,amino acid transporter expression,and metabolic fitness and decreased antiapoptotic *** function was observed when wild-type mice were treated with a pharmacologic pan-RAR ***,Treg-specific expression of DNRARαresulted in distinct phenotypes,such that a single allele of DNRARαin Tregs heightened their suppressive function,and biallelic expression led to loss of suppression and *** loss of Treg function was not cell intrinsic,as Tregs that developed in a noninflammatory milieu in chimeric mice reconstituted with DNRARαand wild-type bone marrow maintained the enhanced suppressive *** mapping suggested that maintaining Treg stability in an inflammatory milieu requires RA *** findings indicate that RA signaling acts as a rheostat to balance Treg function in inflammatory and noninflammatory conditions in a dose-dependent manner.

关键词： Retinoic acid Tregulatory cells Autoimmunity Metabolism mTORC1 STAT5

来源：

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

Decentralized control in active distribution grids via supervised and reinforcement learning

引用

Energy and AI 2024年第2期16卷 137-149页

作者： Stavros Karagiannopoulos Petros Aristidou gabriela Hug Audun Botterud Laboratory for Information and Decision Systems(LIDS) Massachusetts Institute of TechnologyCambridgeUSA EEH-Power Systems Laboratory ETH Zurichhysikstrasse 38092 ZurichSwitzerland Department of Electrical Engineering Computer Engineering&InformaticsCyprus

While moving towards a low-carbon, sustainable electricity system, distribution networks are expected to host a large share of distributed generators, such as photovoltaic units and wind turbines. These inverter-based resources are intermittent, but also controllable, and are expected to amplify the role of distribution networks together with other distributed energy resources, such as storage systems and controllable loads. The available control methods for these resources are typically categorized based on the available communication network into centralized, distributed, and decentralized or local. Standard local schemes are typically inefficient, whereas centralized approaches show implementation and cost concerns. This paper focuses on optimized decentralized control of distributed generators via supervised and reinforcement learning. We present existing state-of-the-art decentralized control schemes based on supervised learning, propose a new reinforcement learning scheme based on deep deterministic policy gradient, and compare the behavior of both decentralized and centralized methods in terms of computational effort, scalability, privacy awareness, ability to consider constraints, and overall optimality. We evaluate the performance of the examined schemes on a benchmark European low voltage test system. The results show that both supervised learning and reinforcement learning schemes effectively mitigate the operational issues faced by the distribution network.

关键词： Supervised learning Reinforcement learning Deep deterministic policy gradient Decentralized control Active distribution systems

来源：

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

Environmental changes affect picoplanktonic composition in Antarctic Peninsula ponds

引用

Advances in Polar Science 2024年第1期35卷 108-122页

作者： Micaela DÍAZ Leonardo LAGOMARSINO gabriela MATALONI Marianela BELTRÁN Marcela LIBERTELLI Paulina FERMANI Laboratorio de Ecología Acuática INTECH-UNSAM-CONICETChascomús 7130Argentina Facultad de Ciencias Naturales y de la Salud UNPSJBComodoro Rivadavia 9000Argentina Laboratorio de Biodiversidad Limnología y Biología de la Conservación3IA-UNSAM-CONICETBuenos Aires 1650Argentina Departamento de Biología de Predadores Tope Instituto Antártico ArgentinoBuenos Aires 1650Argentina Laboratorio de Microbiología Ambiental IBIOMAR/CESIMAR-CENPAT-CONICETPuerto Madryn 9120Argentina

Antarctic Peninsula is experiencing one of the largest global warming events *** water bodies generated by the melting of snow in summer are numerous,and they might act as sentinels of climate change due to their rapid response and ability to integrate catchment *** in climate can influence the structure of microbial communities which dominate these freshwaters ***,we characterize three ponds at Cierva Point(Antarctic Peninsula)by examining their physico-chemical and morphological characteristics and we explored how different factors modify the structure of the microbial *** studied the abundance and biomass of heterotrophic bacteria,picocyanobacteria and picoeukaryote algae during January and February of two consecutive summers(2017 and 2018).We found that ponds had different limnological characteristics,due to their location,geomorphological features and presence of the surrounding flora and ***-chemical parameters as well as microbial community differed between ponds,months and *** 2017,most ponds were oligo to mesotrophic *** larger accumulated rainfall(as a result of environmental changes on the Antarctic Peninsula)during 2018,particularly in February,causes nutrient runoff into water *** affects those ponds with the highest seabird circulation,such as gentoo penguin,increasing *** a result,picoplanktonic abundances were higher,and the community structure shifts to a largely heterotrophic bacteria dominated *** results suggest that these communities could act as sentinels to environmental changes,anticipating a future with mostly hypertrophic ponds.

关键词： microorganisms freshwater environments climate change Cierva Point

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Supplementation of vitamin E or a botanical extract as antioxidants to improve growth performance and health of growing pigs housed under thermoneutral or heat-stressed conditions

引用

Journal of Animal Science and Biotechnology 2024年第3期15卷 1101-1118页

作者： Ysenia V.Silva‑Guillen Consuelo Arellano Jeffrey Wiegert R.Dean Boyd gabriela E.Martinez Eric van Heugten Department of Animal Science North Carolina State UniversityRaleighNC 27695USA Department of Statistics North Carolina State UniversityRaleighNC 27695USA Department of Animal Science Texas A&M UniversityCollege StationTX 77843USA Animal Nutrition Research LLCAlvatonKY 42122USA.

Background Heat stress has severe negative consequences on performance and health of pigs,leading to significant economic *** objective of this study was to investigate the effects of supplemental vitamin E and a botanical extract in feed or drinking water on growth performance,intestinal health,and oxidative and immune status in grow-ing pigs housed under heat stress *** Duplicate experiments were conducted,each using 64 crossbred pigs with an initial body weight of 50.7±3.8 and 43.9±3.6 kg and age of 13-week and 12-week,***(n=128)were housed individually and assigned within weight blocks and sex to a 2×4 factorial arrangement consisting of 2 environments(thermo-neutral(21.2℃)or heat-stressed(30.9℃))and 4 supplementation treatments(control diet;control+100 IU/L of D-α-tocopherol in water;control+200 IU/kg of DL-α-tocopheryl-acetate in feed;or control+400 mg/kg of a botanical extract in feed).Results Heat stress for 28 d reduced(P≤0.001)final body weight,average daily gain,and average daily feed intake(-7.4 kg,-26.7%,and-25.4%,respectively)but no effects of supplementation were detected(P>0.05).Serum vitamin E increased(P<0.001)with vitamin E supplementation in water and in feed(1.64 vs.3.59 and 1.64 vs.3.24),but not for the botanical extract(1.64 vs.1.67 mg/kg)and was greater when supplemented in water ***(P=0.002).Liver vitamin E increased(P<0.001)with vitamin E supplementations in water(3.9 vs.31.8)and feed(3.9 vs.18.0),but not with the botanical extract(3.9 vs.4.9 mg/kg).Serum malondialdehyde was reduced with heat stress on d 2,but increased on d 28(interaction,P<0.001),and was greater(P<0.05)for antioxidant supplementation compared to *** proliferation was reduced(P=0.037)in the jejunum under heat stress,but increased in the ileum when vitamin E was supplemented in feed and water under heat stress(interaction,P=0.04).Tumor necrosis factor-αin jejunum and ileum mucosa decreased by heat stress(P<0.05)and was re

关键词： Botanical extract Growing pigs Heat stress Immune status Oxidative status Tocopherol Water

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Overcoming Adversity:The Severe COVID-19 Illness Experience

引用

Sociology Study 2024年第4期14卷 171-182页

作者： gabriela Aissa Suciu Adriana Baban Babes-Bolyai University Cluj-NapocaRomania

This viral outbreak of the novel SARS-CoV-2 has profoundly disrupted lives globally and has placed unparalleled burdens on individual physical and psychological *** is imperative to comprehend the psychological journey of COVID-19 patients to provide them with effective *** study aimed to explore the psychological illness experience of severe COVID-19 survivors from the first symptoms,to hospitalization,recovery,and post-discharge ***-structured interviews were conducted from November 2022 to April 2023,with 30 Romanian former COVID-19 *** analysis of transcribed interviews identified four major themes:(1)a distant threat;(2)the tipping point;(3)the turning point;and(4)readjustment and *** participants faced denial or uncertainty early on,misattributing symptoms and delaying seeking *** as a last resort brought anxiety,isolation,and closer confrontations with mortality *** symptoms improved,and participants received supportive care from both healthcare professionals and family members,hope and optimism *** health improvements and feelings of safety,lingering anxiety ***-discharge adjustment involved managing lasting effects and selectively resuming *** some of the participants,reflection afterward prompted greater self-understanding,empathy and connection,and motivation for *** results have implications for healthcare practitioners,policymakers,and researchers.

关键词： illness experience COVID-19 survivors psychological impact emotional impact pandemic

来源：

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

What is the effect of Tribulus terrestris on testicular morphology and sperm production?An experimental study in the rat model

引用

Asian Journal of Andrology 2024年第1期26卷 67-70页

作者： Marcello Henrique Araujo Da Silva gabriela Faria Buys-Goncalves Joao Henrique Duque Reis Estrada Francisco Jose Barcellos Sampaio Diogo Benchimol de Souza Urogenital Research Unit Rio de Janeiro State UniversityRio de Janeiro 20551-030RJBrazil

The objective of this study was to investigate whether treatment with Tribulus terrestris(Tt)has any impact on the testicular morphology and function in a rodent *** male rats were divided into a control group and a group receiving 100 mg kg^(-1) body weight of Tt *** 4o days of experiment,the animals were submitted to euthanasia;epididymal tail spermatozoa were collected;and spermatozoa concentration,motility,and viability were *** addition,testicles were collected and processed for histomorphometrical *** were compared using the Student's t-test and considered significant when P<*** concentration,motility,and viability showed no difference between the ***,testicular weight and volume,seminiferous tubule diameter,tunica propria surface density,seminiferous epithelium surface density,and intertubular compartment surface density were statistically similar between the ***,seminiferous epithelium height and tubular lumen surface density were augmented in animals treated with *** with Tt does not cause a major impact on testicular morphology,promoting only subtle *** difference on spermatozoa parameters was observed.

关键词： morphometry testicle Tribulus terrestris

来源：

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

Surgical site infection following pancreaticoduodenectomy in a referral cancer center in Mexico

引用

Hepatobiliary & Pancreatic Diseases International 2024年第5期23卷 502-508页

作者： Rodrigo Villaseñor-Echavarri Javier Melchor-Ruan Mercedes Aranda-Audelo gabriela Arredondo-Saldaña Patricia Volkow-Fernandez Maria del Carmen Manzano-Robleda Alejandro E Padilla-Rosciano Diana Vilar-Compte Department of Infectious Diseases Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico School of Medicine Universidad PanamericanaAugusto Rodin No.498Insurgentes MixcoacBenito JuárezMexico CityMexico Department of Digestive Tube and Hepatopancreatobiliary Tumors Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico Department of Infectious Diseases Hospital Manuel Gea GonzálezCalz.de Tlalpan 4800Belisario Domínguez Secc 16TlalpanMexico CityMexico Gastrointestinal and Endoscopy Department Instituto Nacional de CancerologíaAv.San Fernando 22Belisario Domínguez Secc 16TlalpanMexico CityMexico

Background: Pancreaticoduodenectomy is the standard treatment for resectable periampullary cancer. Surgical site infections(SSI) are common complications with increased morbidity. The study aimed to describe the prevalence, risk factors, microbiology, and outcomes of SSI among patients undergoing pancreaticoduodenectomy. Methods: We conducted a retrospective study in a referral cancer center between January 2015 and June 2021. We analyzed baseline patient characteristics and SSI occurrence. Culture results and susceptibility patterns were described. Multivariate logistic regression was used to determine risk factors, proportional hazards model to evaluate mortality, and Kaplan-Meier analysis to assess long-term survival. Results: A total of 219 patients were enrolled in the study;101(46%) developed SSI. Independent factors for SSI were diabetes mellitus, preoperative albumin level, biliary drainage, biliary prostheses, and clinically relevant postoperative pancreatic fistula. The main pathogens were Enterobacteria and Enterococci. Multidrug-resistance rate in SSI was high but not associated with increased mortality. Infected patients had higher odds of sepsis, longer hospital stay and intensive care unit stay, and readmission rate. Neither 30-day mortality nor long-term survival was significantly different between infected and non-infected patients. Conclusions: SSI prevalence among patients undergoing pancreaticoduodenectomy was high and largely caused by resistant microorganisms. Most risk factors were related to preoperative instrumentation of the biliary tree. SSI was associated with greater risk of unfavorable outcomes;however, survival was unaffected.

关键词： Surgical site infection Pancreaticoduodenectomy Pancreatic cancer Endoscopic biliary drainage Biliary prosthesis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Potential of Applying Artificial Intelligence to Hot Metal Logistics Management

引用

China's Refractories 2024年第3期33卷 37-41页

作者： Maria gabriela Garcia CAMPOS Paul van BEURDEN Tata Steel IJmuiden 1970 CAThe Netherlands

The steel industry,known for its complexity and the need to reduce CO_(2)emissions,is adopting advanced digitalization tools to move towards a more sustainable,integrated,and agile operating *** twins with artificial intelligence-based optimization and scheduling models can improve decision-making in logistics,refractory maintenance,and energy *** incorporating advanced AI algorithms into this decision support system,the hot metal route scenarios can be evaluated,resulting in minimized hot metal temperature losses and increased scrap *** paper integrated digital twins with reinforcement learning algorithms to investigate the logistics of torpedoes and hot metal *** considered important input parameters such as the ladles and torpedoes'thermal state and location,refractory thickness,hot metal volume and temperature,and crane *** incorporating advanced AI algorithms into this decision support system,energy-efficient scenarios can be evaluated,increasing scrap utilization and resulting in a possible reduction of 15°C in hot metal temperature losses.

关键词： hot metal logistics energy efficiency artificial intelligence

来源：

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

Improving the training abilities of ophthalmic educators: the Ophthalmology Foundation’s initiatives

引用

Annals of Eye Science 2024年第1期9卷 1-3页

作者： Karl Golnik Yip Chee Chew gabriela Palis Meenakshi Swaminathan Department of Ophthalmology at the University of Cincinnati CincinnatiOHUSA. Department of Ophthalmology and Visual Sciences Khoo Teck Puat HospitalSingaporeSingapore Ophthalmology Department Hospital Italiano de Buenos AiresBuenos AiresArgentina Capstone Clinic ChennaiIndia Sri Ramachandra Medical College ChennaiIndia

Our goal as medical educators is for our students to learn what they need to know and competently perform ophthalmic *** addition,the students need to have good communication skills and behave professionally and ethically(1,2).Most medical educators are not taught how to teach but rather learn by role-modeling their *** can be good or bad depending on the mentor!In addition,the amount of knowledge and numbers of surgical procedures is ever increasing and yet,in most countries,the amount of time to train and become competent is not ***,our goal of creating competent ophthalmologists is ever more challenging.

关键词： Ophthalmology Foundation teaching skills feedback

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：