检索结果-南通市图书馆

Theoretical study of structural and electronic properties of oligo(thiophene-phenylene)s in comparison with oligothiophenes and oligophenylenes

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2008年第1期19卷 123-126页

作者： H.Zgou s.m.Bouzzine s.Bouzakraoui m.Hamidi m.Bouachrine Unité de Recherche sur les macromolécules et modélisation Faculté des Sciences et TechniquesB.P.509 Boutalamine5200 ErrachidiaMorocco Unité de Chimie Théorique AppliquéeFaculté des Sciences et TechniquesB.P.509 Boutalamine5200 ErrachidiaMorocco Unité de Chimie Théorique Appliquée Faculté des Sciences et TechniquesB.P.509 Boutalamine5200 ErrachidiaMorocco Unité de Recherche sur les macromolécules et modélisation Faculté des Sciences et TechniquesB.P.509 Boutalamine5200 ErrachidiaMorocco

In this work, a quantum-chemical investigation on the structural and opto-electronic properties of oligo（thiophene-phenylene）（4TP） is carried out. The results are discussed in comparison with the properties of corresponding oligothiophene （8T） and oligophenylene （8P）. As the opto-electronic properties of this type of conducting polymers are governed by their electronic band gap, we shall also present a comparison among HOmO, LUmO and band gap energies of these three materials.

关键词： Conjugated polymers Oligothiophene Oligophenylene Oligo(thiophene-phenylene) DFT

Insights from an academic endeavor into central nervous system drug discovery

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第6期20卷 1717-1718页

作者： Lieve van Veggel An m.Voets Tim Vanmierlo Rudy schreiber BIOmED Biomedical Research Institute Faculty of Medicine and Life SciencesHasselt UniversityHasseltBelgium Department of Psychiatry and Neuropsychology Division of Translational NeuroscienceEuropean Graduate School of NeuroscienceSchool for Mental Health and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands section of Psychopharmacology Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtThe Netherlands University ms Center(UmsC) Hasselt-PeltBelgium

Historically,"big pharma"did most central nervous system drug discovery R&D ***,in modern times their"management reductionism"resulted in disappointing pipelines and pharma resided to(late)development,regulatory approval,and marketing(Thong,2015).This had significant consequences for financing and executing research,resulting in a larger role for funding by governments and patient-organizations and a shift of research to academia(mazzucato,2013).

关键词： academic approval consequences

Neurocircuit regeneration by extracellular matrix reprogramming

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2300-2301页

作者： shengzhang su Ian N.Levasseur Kimberly m.Alonge Department of medicinal Chemistry University of WashingtonSeattleWAUSA Department of Chemistry University of WashingtonSeattleWAUSA Department of medicine University of Washington Medicine Diabetes InstituteSeattleWAUSA

The brain's extracellular matrix(ECm),which is comprised of protein and glycosaminoglycan(GAG)scaffolds,constitutes 20%-40% of the human brain and is considered one of the largest influencers on brain cell functioning(soles et al.,2023).synthesized by neural and glial cells,the brain's ECm regulates a myriad of homeostatic cellular processes,including neuronal plasticity and firing(miyata et al.,2012),cation buffering(moraws ki et al.,2015),and glia-neuron interactions(Anderson et al.,2016).Considering the diversity of functions,dynamic remodeling of the brain's ECm indicates that this understudied medium is an active participant in both normal physiology and neurological diseases.

关键词： matrix programming

synergistic effect of seawater's parameters on the corrosion rate of the austenitic stainless steel 304

在线全文

学校读者我要写书评

暂无评论

Acta metallurgica sinica(English Letters) 2010年第3期23卷 161-170页

作者： s.Atashin m.Pakshir A.Yazdani Department of materials science and Engineering Shiraz University

In this article the corrosion rate of the austenitic stainless steel type 304, under the synergistic effect of environmental factors has been assessed via potentiodynamic polarization ***, velocity, pH and temperature are the factors which induce effects on the corrosion rate of the considered *** analysis is applied using the full two-level factorial experimental design method, which results in the contribution value of each parameter in changing the quantity of average corrosion rate in both individual and synergistic *** this quantitative analysis, qualitative analysis has been used to predict the variation *** two analyses show the important role of the synergistic action, which changes the variation direction of corrosion rate and the contribution percentage of each parameter in varying the value of corrosion *** both these analyses can show the magnitude and quality of each parameter＇s effect, which is remarkably valuable in marine applications.

关键词： stainless steel 304 Environmental parameters seawater corrosion synergistic effect

Transport Properties of Bi_2s_3 single Crystals

在线全文

学校读者我要写书评

暂无评论

Journal of materials science & Technology 2008年第5期24卷 757-760页

作者： H.T.shaban m.m.Nassary m.s.El-sadek Physics Department Faculty of ScienceSouth Valley Univ.QenaEgypt.

Bi2s3 single crystals were grown by using a modification of Bridgman method. measurements of the electrical conductivity, Hall effect and thermoelectric power （TEP） were preformed in two crystallographic directions （parallel and perpendicular to the c-axis）. The measurements showed that the electrical conductivity, Hall mobility, and seebeck coefficient have anisotropic nature. From these measurements some physical parameters were estimated and the crystals showed n-type of conduction mechanism. Also, values of the energy gap were found to be different in the two directions.

关键词： Bi2s3 Hall effect Thermoelectric power Electrical conductivity

A mild, configurable, flexible CoNi-LDH（v）/Zn battery based on H-vacancy-induced reversible Zn2+ intercalation

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 498-508页

作者： Xinyue Cheng Dingsheng Wu Hao Gao Qingqing Wang Pengfei Lv sam s.Yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University school of mechanical Engineering Korea University

Flexible Zn-based batteries have attracted increasing research interest as essential components of wearable energy storage ***,the advancement of flexible aqueous Zn-based batteries based on Co-Ni layered double hydroxide （CoNi-LDH） as the cathode material is hampered by their poor cycling stability and the corrosiveness of alkaline ***,CoNi-LDH nanosheets enriched with H vacancies (CoNi-LDH（v）) were constructed on a flexible carbon cloth （CC） substrate via electrochemical deposition and *** Zn-based battery comprising CoNi-LDH（v）@CC as the cathode exhibited highly reversible conversion reactions and stable operation in 3 m ZnsO4electrolyte （pH=4）.The battery delivered an excellent specific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling stability（53.9%,900 cycles）,and high discharging *** abundant H vacancies served as active sites for the reversible intercalation of Zn2+and the extravasation of NO3-generated channels and space for Zn2+transport and storage,together enabling an excellent Zn2+storage ***,a sandwich-structured solid-state CoNi-LDH（v）@CC//Zn@CC battery was fabricated and was found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencapsulated battery powered a digital watch under various deformation conditions and operated stably for 80 ***,the flexible battery displayed outstanding customizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** proposed engineering strategy contributes to the realization of textiles with truly wearable energy-storage devices.

关键词： CoNi/Zn battery H vacancies mild aqueous electrolyte Tailorable battery Wearable energy storage device

Transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Applied mathematics and mechanics(English Edition) 2025年第1期46卷 177-192页

作者： m.NAVEED m.ImRAN T.AsGHAR Z.ABBAs Department of mathematics Division of Science and TechnologyUniversity of Education Department of mathematics The Islamia University of Bahawalpur

This paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. The influence of magnetic fields is also inspected in terms of their physical characteristics. To depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAm).The effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词： hybrid nanofluid oscillating curved stretchable sheet gyrotactic microorganism Cattaneo-Christov heat and mass flux chemical reaction analytical solution O368

Exercise preconditioning alleviates ischemia-induced memory deficits by increasing circulating adiponectin

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： meifeng Zheng Borui Zhang sonata s Y Yau Kwok-Fai so Li Zhang Haining Ou Department of Rehabilitation medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of CNs Regeneration(ministry of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina state Key Laboratory of Brain and Cognitive science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and synaptogenesis,and has been widely used for functional rehabilitation after *** this study,we determined whether exercise training before disease onset can alleviate the severity of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 days of treadmill exercise training before surgery for middle cerebral artery *** found that this exercise pre-conditioning strategy effectively attenuated brain infarct area,inhibited gliogenesis,protected synaptic proteins,and improved novel object and spatial memory *** analysis showed that circulating adiponectin plays a critical role in these preventive effects of *** activation of adiponectin receptors by Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary,our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory function middle cerebral artery occlusion prefrontal cortex synaptic proteins treadmill exercise

Effect of Water Concentration on the Characterization of sprayed Cd_(0.5)Zn_(0.5)s Films

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第6期28卷 237-240页

作者： sur s Öztürk Z Öztaş.m Bedir m Özdemir Y Department of Engineering Physics University of GaziantepGaziantepTurkey Chemical and Process Engineering Department Yalova UniversityYalovaTurkey

Cd_(0.5)Zn_(0.5)s film samples are prepared by a spray pyrolysis technique using aqueous solutions of CdC_(l2),ZnC_(l2),sC(NH2)2 and deionized water,which are atomized using compressed air as the carrier gas onto glass substrates with different water(H2O)concentrations.H2O is used as the *** prepared films are characterized by means of XRD and UV−VIs *** results reveal that the structures and properties of the films are greatly affected by the H2O *** in a certain range of concentrations promotes the formation of the Cd_(0.5)Zn_(0.5)s films and improves the properties of the films.

关键词： spectroscopy pyrolysis