检索结果-南通市图书馆

Cut stumps vs broken stumps:Does it make any difference in the maintenance of plant and lichen biodiversity in Central European mountain forests?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Forest Ecosystems 2024年第4期11卷 457-468页

作者： Monika Staniaszek-Kik Jan Zarnowiec damian Chmura Department of Geobotany and Plant Ecology University of Lodz90-237LodzPoland Institute of Nature Protection and Engineering University of Bielsko-BialaWillowa Str 243-309Bielsko-BiałaPoland

Fxcessive forest exploitation significantly contributes to land degradation and the creation of human-made *** are sometimes ignored in studies on the biodiversity of coarse woody *** investigated whether the type of stump,*** stumps(naturally created)and cut stumps(formed during forestry operations)had an impact on the species composition and species diversity as well as due to this fact they can be characterized by plant *** research covered 728 spruce stumps(287 broken and 441 cut stumps)that were inhabited by lichens,liverworts,mosses and vascular plants in mountain forest belt(Karkonosze Mts.,Poland).The following types of microhabitats were included in the research:the upper surface and the lateral surface of a stump with both bark and *** are statistically significant compositional differences between the two types of stumps,which was demonstrated by ordination analyses and indicator species *** to the generalized linear models,the probability of occurrence increases in cut stumps in case of liverworts and vascular plants and also along the decomposition *** generalized linear mixed-effects model showed that there was a higher species richness of liverworts,mosses and vascular plants on the cut stumps and less drier but the reverse situation was in *** generalized additive models for their cover showed similar *** all of the taxonomic groups were affected by altitude both in terms of species composition and total cover on the *** concluded that cut stumps are an important type of deadwood for biodiversity and provide a convenient habitat,especially for many lichens and bryophytes.

关键词： Coarse woody debris Spruce stumps Epixylic flora Plant indicators

Treatment strategy and therapy based on immune response in patients with gastric cancers

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第8期16卷 2393-2395页

作者： damian Jacenik Jakub Fichna Department of Cytobiochemistry Faculty of Biology and Environmental ProtectionUniversity of LodzLodz 90-236Poland Department of Biochemistry Medical University of LodzLodz 92-215Poland

In this editorial,we highlight the significance of a retrospective study“Analysis of the impact of immunotherapy efficacy and safety in patients with gastric cancer and liver metastasis”performed by Liu et *** authors utilized data collected from gastric cancer(GC)patients and assessed immunotherapy effectiveness and survival *** found significant differences in treatment *** immunotherapy seems to be a beneficial strategy for advanced GC patients,strati-fication of the data based on metastasis status may further improve treatment strategies.

关键词： Gastric cancer Metastasis Immunotherapy Treatment strategy

A dual-beam piezo-magneto-elastic wake-induced vibration energy harvesting system for high-performance wind energy harvesting

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第1期67卷 221-239页

作者： MA XiaoQing ZHANG Hang MARGIELEWICZ Jerzy GĄSKA damian WOLSZCZAK Piotr LITAK Grzegorz ZHOU ShengXi School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Research&Development Institute in Shenzhen Northwestern Polytechnical UniversityShenzhen 518057China Faculty of Transport and Aviation Engineering Silesian University of TechnologyKrasińskiego 8Katowice 40-019Poland Department of Automation Lublin University of TechnologyNadbystrzycka 36Lublin 20-618Poland

Wind-induced vibration energy harvesting has a great potential for utilizing wind energy to supply power for low-powered *** improve the working performance of energy harvesters effectively,a suitable structural design is *** paper proposes a dual-beam piezo-magneto-elastic wake-induced vibration energy harvesting system to enhance the functional performance of aeroelastic energy harvesters in environments with variable wind *** system contains two piezoelectric beams coupled by magnets(forming upstream and downstream energy harvesters),and each beam is attached with a foam cylinder.A corresponding dynamic model is provided,and output characteristics are obtained at different wind *** and experimental verification indicate that both upstream and downstream energy harvesters can realize efficient energy *** the wind speed exceeds a certain critical value,the amplitudes of the system’s displacement and voltage are *** wind speed threshold value is approximately 1.25 m/*** the wind speed and magnet spacing are 10.2 m/s and 20 mm,respectively,the output power of the system reaches 4.9×10^(−4)***,the wind speed threshold value of the proposed system can be adjusted by an equivalent nonlinear restoring force.

关键词： dual-beam structure piezoelectric energy harvester theoretical model nonlinear dynamics

Modifying the progression of Parkinson's disease through movement interventions:multimodal quantification of underlying mechanisms

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第8期19卷 1651-1652页

作者： Manuel Bange damian Marc Herz Dumitru Ciolac Gabriel Gonzalez-Escamilla Sergiu Groppa Section of Movement Disorders and Neurostimulation Department of NeurologyFocus Program Translational Neuroscience(FTN)University Medical Center of the Johannes Gutenberg-University MainzMainzGermany

Introduction:Parkinson’s disease(PD)is the most common neurodegenerative movement *** pathological hallmark is the progressive loss of dopaminergic neurons of the substantia nigra pars compacta,which is accompanied by widespread alterations in the structu re and function of distributed brain *** r,these processes cause a variety of motor symptoms such as bradykinesia,rigidity,tremor,gait disorders,or difficulties in fine motor control(Bange et al.,2022).

关键词： alterations movement

Removal of As(V)in the presence of Cr(VI)in contaminated water from the Bajio region of Mexico using ferrihydrite-functionalized graphene oxide(GOFH):A case study

在线全文

学校读者我要写书评

暂无评论

Emerging Contaminants 2024年第3期10卷 134-144页

作者： D.R.Joya-Cardenas J.P.Rodríguez-Caicedo M.A.Corona-Rivera N.Saldana-Robles C.E.damian-Ascencio A.Saldana-Robles Graduate Program in Biosciences University of GuanajuatoIrapuato36500Mexico Facultad de Ingenierías y Tecnologías Instituto XeriraUniversidad de SantanderBucaramanga680003Colombia Chemical Engineering Unit Academic Multidisciplinary Region Altiplano UAMRA.Autonomous University of San Luis PotosíMatehualaSan Luis Potosí78000Mexico Department of Agricultural Engineering University of GuanajuatoIrapuato36500Mexico Department of Mechanical Engineering University of GuanajuatoSalamanca36800Mexico Mechanical Engineering Department Virginia TechBlacksburgVA24061USA

The presence of heavy metals such as arsenic(As)and chromium(Cr)can be considered one of the most toxic heavy *** study aims to develop and evaluate a graphene oxide(GO)based material functionalized with ferrihydrite for the removal of As(V)in the presence of Cr(VI).The adsorbent ferrihydrite-functionalized graphene oxide(GOFH)was characterized by SEM,FTIR,XRD,XPS,surface charge,BET and *** adsorption capacities for As(V)and Cr(VI)were 160 and 66 mg g^(-1)respectively at pH 4 and 298 K,fitting the Langmuir *** binary systems,GOFH adsorbed As(V)with an adsorption capacity of 137 mg g^(-1)in the presence of 20 mg L^(-1)Cr(VI)at room *** analysis revealed an exothermic and spontaneous ***,GOFH effectively removed several coexisting anions from groundwater,including SO_(4)^(2-),CO_(3)^(2-)and Cl^(-).This work evidences the potential of GOFH for competitive adsorption of priority pollutants from complex *** GOFH material represents a technically and economically viable technology for application in groundwater decontamination,as it requires inexpensive precursors and ambient conditions during synthesis and operation.

关键词： Competition Ions Contamination Groundwater Adsorption capacity

Evolution of liver transplantation in the metabolic dysfunctionassociated steatotic liver disease era: Tracking impact through time

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Transplantation 2024年第4期14卷 84-94页

作者： Karina Sato-Espinoza Perapa Chotiprasidhi Estefanía Liza Zuly Placido-damian Javier Diaz-Ferrer Division of Gastroenterology and Hepatology Department of MedicineMayo ClinicRochesterMN 55902United States Hepatology Service Department of Digestive DiseasesHospital Nacional Edgardo Rebagliati MartinsLima 15072Peru Medicine Faculty Universidad San Martin de PorresLima 02002Peru Gastroenterology Service Clinica InternacionalLima 02002Peru

Liver transplantation(LT)for metabolic dysfunction-associated steatotic liver disease(MASLD)is increasing globally due to rising rates of obesity and metabolic syndrome,posing significant *** patients typically present with advanced age,higher body mass index(BMI),and metabolic com-orbidities such as diabetes,hypertension,and *** pre-transplant evaluations are crucial for assessing surgical risks and preparing patients for *** patients with higher BMI may experience longer operative times,potentially affecting intraoperative *** the months following LT,MASLD recipients face persistent challenges,including a higher incidence of metabolic syndrome and cardiovascular events compared to non-MASLD ***,survival rates at 1-,3-,and 5-years post-LT do not markedly differ from other etiologies,indicating comparable surgical *** outcomes in MASLD patients undergoing LT demands a multidisciplinary approach from pre-transplant assessment to post-transplant *** must address metabolic comorbidities,manage cardiovascular health,and monitor steatosis recurrence,which can be exacerbated by obesity and *** approach aims to mitigate long-term graft complications and mortality risks,ultimately enhancing transplant success and patient *** research is essential to refine these approaches and meet the evolving challenges posed by MASLD as a leading indication for LT worldwide.

关键词： Liver transplantation Metabolic dysfunction-associated steatotic liver disease Alcohol liver disease Hepatitis C Hepatitis B Hepatocellular carcinoma

High Strain-Rate and Shock Response of Carbon SupercompositeTM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Composite Materials 2024年第3期14卷 132-145页

作者： Suman Babu Ukyam Raju P. Mantena damian L. Stoddard Arunachalam M. Rajendran Department of Mechanical Engineering University of Mississippi Mississippi USA

This study focuses on assessing the dynamic behaviors of carbon SupercompositeTM laminates when subjected to high strain-rates and air blast loads, using a shock tube for testing. The investigation aims to understand the response of these advanced materials under extreme conditions, which is crucial for applications in aerospace, military, and other high-performance industries. SupercompositeTM (CZE) prepreg, made up of a 3K plain weave carbon fabric with milled carbon fibers as interlaminar reinforcements impregnated with epoxy, is used to create SupercompositeTM (CZE) laminates. A woven carbon composite (CBE) laminate was also created using 3K plain weave Carbon/Epoxy (CBE) prepreg. Both types of laminates were designed and fabricated using the autoclave process. The dynamic behaviors of CZE and CBE laminate under transverse compression loads were evaluated using a modified Split Hopkinson Pressure Bar (SHPB). The study found that the 3D reinforcement with milled carbon fibers significantly affected the dynamic behavior of the CZE laminate. Stereo imaging videos, captured using two SHIMADZU high-speed video cameras in shock tube experiments, recorded the time history of back surface deflection. The plate specimens exhibited low deflections without any visible damage. The experimentally observed center point deflections of the CZE plates decayed sooner than those of the CBE laminates, indicating an improvement in damping due to the presence of 3D reinforced milled carbon fibers. This research shows that optimized utilization of milled carbon fibers as 3D reinforcement can withstand high stress in the thickness direction and higher energy absorption when subjected to impact and high strain-rate loading.

关键词： SupercompositeTM GOM Software 3D Reinforcement Milled Carbon Fibers Split Hopkinson Pressure Bar (SHPB) Air-Blast Loads

An oxygenating colloidal bioink for the engineering of biomimetic tissue constructs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bio-Design and Manufacturing 2024年第3期7卷 240-261页

作者： Seol-Ha Jeong Jarno Hiemstra Patrick V.Blokzijl Rebeca damian-Ferrara Danilo Martins dos Santos Jéssica H.L.da Fonseca Min-Ho Kang Jihyun Kim Dilara Yilmaz-Aykut Mei L.L.Cham-Pérez Jeroen Leijten Su Ryon Shin Division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolBostonMA 02139USA Leijten Lab Department of Developmental BioEngineeringFaculty of Science and TechnologyTechnical Medical CentreUniversity of TwenteDrienerlolaan 57522 NB EnschedeThe Netherlands Nanotechnology National Laboratory for Agriculture(LNNA) Embrapa InstrumentaçãoSao CarlosSao Paulo 13560-970Brazil Department of Biomedical-Chemical Engineering The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea Department of Biotechnology The Catholic University of Korea43 Jibong-roBucheon-siGyeonggi-do 14662Republic of Korea

Ensuring a sufficient oxygen supply is pivotal for the success of bioprinting applications since it fosters tissue integration and natural *** in oxygen concentration among diverse tissues necessitates the precise recreation of tissue-specific oxygen levels in imprinted constructs to support the survival of targeted *** oxygen-releasing biomaterials,such as oxygen-generating microparticles(OMPs),have shown promise for enhancing the oxygen supply of microenvironments in injured tissues,whether this approach is scalable for large tissues and whether tissue-specific bioinks with varying OMP concentrations remain printable remain *** study addresses this critical gap by introducing an innovative class of engineered oxygenated bioinks that combine colloidal-based microgels with *** report that incorporating nanosized calcium peroxide(nCaO_(2))and manganese oxide nanosheets(nMnO_(2))into hydrophobic polymeric microparticles enables precise modulation of oxygen release while controlling hydrogen peroxide ***,the fabrication of oxygenating and cytocompatible colloidal gels is achieved using an aqueous two-phase *** study thoroughly evaluates the fundamental characteristics of the resulting bioink,including its rheological behaviors,printability,shape fidelity,mechanical properties,and oxygen release ***,this study demonstrates the macroscopic scalability and cytocompatibility of printed constructs produced via cell-laden oxygenating colloidal *** showcasing the effectiveness of extrusion-based bioprinting,this study underscores how it can be used to fabricate biomimetic tissues,indicating its potential for new *** findings presented here advance the bioprinting field by achieving scalability with both high cell viability and the possibility of mimicking specifically oxygenated *** work thereby offers a promising avenue for the development of functional tissues with e

关键词： 3D bioprinting Bioink Colloidal gels Extrusion printing Oxygen-generating microparticle

Britanin–a beacon of hope against gastrointestinal tumors?

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Oncology 2024年第4期15卷 523-530页

作者： Agnieszka Kajdanek damian Kołat Lin-Yong Zhao Mateusz Kciuk Zbigniew Pasieka Żaneta Kałuzińska-Kołat Department of Biomedicine and Experimental Surgery Medical University of LodzLodz 90-136LodzkiePoland Department of Functional Genomics Medical University of LodzLodz 90-752LodzkiePoland Department of General Surgery&Laboratory of Gastric Cancer State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Gastric Cancer Center West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Molecular Biotechnology and Genetics University of LodzLodz 90-237LodzkiePoland

Britanin is a bioactive sesquiterpene lactone known for its potent anti-inflammatory and anti-oxidant *** also exhibits significant anti-tumor activity,suppressing tumor growth in vitro and in *** current body of research on Britanin includes thirty papers predominantly related to neoplasms,the majority of which are gastrointestinal tumors that have not been summarized *** drive academic debate,the present paper reviews the available research on Britanin in gastrointestinal *** also outlines novel research directions using data not directly concerned with the digestive system,but which could be adopted in future gastrointestinal *** was found to counteract liver,colorectal,pancreatic,and gastric tumors,by regulating proliferation,apoptosis,autophagy,immune response,migration,and *** confirmed in pancreatic,gastric,and liver cancer,its most commonly noted molecular effects include nuclear factor kappa B and B-cell lymphoma 2 downregulation,as well as Bcl-2-associated X protein ***,it has been found to induce the Akt kinase and Forkhead box O1 axis,activate the AMP-activated protein kinase pathway,elevate interleukin-2 and peroxisome proliferator-activated receptor-γlevels,reduce interleukin-10,as well as downregulate matrix metalloproteinase-9,Twist family bHLH transcription factor 1,and *** also inhibits Myc–HIF1αinteraction and programmed death ligand 1 transcription by interrupting the Ras/RAF/MEK/ERK pathway and mTOR/P70S6K/4EBP1 *** research should aim to unravel the link between Britanin and acetylcholinesterase,mast cells,osteolysis,and ischemia,as compelling data have been provided by studies outside the gastrointestinal *** the cytotoxicity of Britanin on noncancerous cells is significantly lower than that on tumor cells,while still being effective against the latter,further in-depth studies with the use of animal models are *** compound exhi

关键词： Britanin Sesquiterpene lactones Chemotherapeutics Gastrointestinal tumors In vitro In vivo