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A Review on the Advancement of Renewable Natural Fiber Hybrid Composites: Prospects, Challenges, and Industrial Applications

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Journal of Renewable materials 2024年第7期12卷 1237-1290页

作者： mohammed mohammed jawad K.Oleiwi Aeshah m.mohammed Anwar ja’afar mohamad jawad Azlin F.Osman Tijjani Adam Bashir O.Betar Subash C.B.Gopinath Center of Excellence Geopolymer&Green Technology(CEGeoGTech) Universiti Malaysia PerlisArau02600Malaysia Faculty of Chemical Engineering Technology Universiti Malaysia Perlis(UniMAP)Arau02600Malaysia Department of materials Engineering University of TechnologyBaghdad10070Iraq Department of Chemical materials University of Bagdad College of Education for Pure Science Ibn-AlhaithamBaghdad10001Iraq Department of Computer Techniques Engineering Al-Rafidain University CollegeBaghdad10001Iraq Faculty of Electronics Engineering Technology Universiti Malaysia PerlisKampus Uniciti Alam Sg.ChuchuhPerlis02100Malaysia Research Center(NANOCAT) University of MalayaKuala Lumpur50603Malaysia Institute of Nano Electronic Engineering Universiti Malaysia PerlisPerlis01000Malaysia Center for Global Health Research Saveetha Medical College&HospitalSaveetha Institute of Medical and Technical Sciences(SIMATS)Tamil Nadu602105India

Naturalﬁbre(NFR)reinforced functional polymer composites are quickly becoming an indispensable sustainable material in the transportation industry because of their lightweight,lower cost in manufacture,and adaptability to a wide variety of ***,the major difﬁculties of using theseﬁbres are their existing poor dimensional stability and the extreme *** assessing the mechanical properties(mP)of composites,the interfacial bonding(IB)happening between the NFR and the polymer matrix(Pm)plays an incredibly signiﬁcant *** compared to NFR/syntheticﬁbre hybrid composites,hybrid composites(HC)made up of two separate NFR are less prevalent;yet,these hybrid composites also have the potential to be valuable materials in terms of environmental issues.A new dimension to theﬂexibility of composites reinforced with NFR is added by the cost-effective manufacture of hybrid composites utilising *** purpose of this study is to offer an over-view of the keyﬁndings that were presented on hybrid *** emphasis was focused on the factors that inﬂuence the performance of the naturalﬁber composites,diverse approaches to enhancing mP,physical,electri-cal,and thermal characteristics of the *** study in polymer science gains interest for applications in con-struction and automotive industries.

关键词： Renewable naturalﬁber hybrid composites sustainability nanomaterial greener material

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Sensitivity to Combustible Gas for ZnO Thin Films

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Journal of materials Science & Technology 1997年第4期13卷 302-305页

作者： Tan, GL Wu, ja Wu, XJ Dept. of materials Science and Engineering Zhejiang University Hangzhou 310027 China

A fine polycrystalline ZnO thin film with 0.3 similar to 0.6 mu m grain size was obtained by sol-gel process and a consequential heat treatment at 500 degrees C. The process of preparing ZnO thin film was analysed. The sensitivity and conductivity of ZnO thin films as combustible gas (CO, CH4, H-2) sensor as well as the influence of catalyst and pH value of the precursor on its sensitivity were studied in detail. The structure characteristics of ZnO thin film by different process were investigated by X-ray diffraction, thermal analysis and photoelectron spectrometer. The atomic ratio of Zn to O on the surface of ZnO thin film was found to be 1.14:1 measured from XPS result. The conductivity of the thin film increases greatly when doped with Al3+ ion but decreases while doped with Na+ ion.

关键词： Zinc oxide

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山楂叶总黄酮通过miR-21a-5p对血管紧张素Ⅱ诱导的心肌细胞肥大的影响

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中国临床药理学杂志 2024年第15期40卷 2182-2186页

作者：田林燕朱冉代聚平王佳佳张斌南阳医学高等专科学校内科教研室河南南阳473000 南阳医学高等专科学校临床实训室河南南阳473000 南阳医学高等专科学校第一附属医院心血管内科河南南阳473000 南阳医学高等专科学校第一附属医院病理科河南南阳473000

目的探讨山楂叶总黄酮对血管紧张素Ⅱ(AngⅡ)诱导的心肌肥大的影响,及其可能作用机制。方法将H9c2细胞分为对照组(正常培养),模型组(100 nmol·L^(-1)AngⅡ处理24 h),低、中、高剂量实验组(先给予100 nmol·L^(-1)AngⅡ处理24 h后,再分... 详细信息

目的探讨山楂叶总黄酮对血管紧张素Ⅱ(AngⅡ)诱导的心肌肥大的影响,及其可能作用机制。方法将H9c2细胞分为对照组(正常培养),模型组(100 nmol·L^(-1)AngⅡ处理24 h),低、中、高剂量实验组(先给予100 nmol·L^(-1)AngⅡ处理24 h后,再分别给予25、50、100 mg·L^(-1)的山楂叶总黄酮处理24 h),anti-miR-NC、anti-miR-21a-5p组(分别转染anti-miR-NC、anti-miR-21a-5p后,给予100 nmol·L^(-1)AngⅡ处理24 h),miR-NC+高剂量组和miR-21a-5p+高剂量组(分别转染miR-NC、miR-21a-5p mimics,再给予100 nmol·L^(-1)AngⅡ+100 mg·L^(-1)山楂叶总黄酮各处理24 h)。用CCK-8法和流式细胞术检测细胞活力和凋亡情况,用实时荧光定量聚合酶链反应法检测miR-21a-5p的表达水平,用蛋白质印迹法检测环氧化酶-2(COX2)/前列腺素E2(PGE2)的表达水平。结果对照组、模型组和高剂量实验组的细胞活力分别为1.03±0.09、0.51±0.05和0.93±0.08,凋亡率分别为(7.69±0.61)%、(23.04±1.82)%和(9.43±0.71)%,miR-21a-5p表达水平分别为1.00±0.09、2.43±0.18和1.09±0.08,COX2蛋白相对表达水平分别为0.42±0.03、0.85±0.08和0.40±0.04,PGE2蛋白相对表达水平分别为0.34±0.03、0.75±0.07和0.35±0.03,模型组的上述指标与高剂量实验组和对照组相比,在统计学上差异均有统计学意义(均PmiR-NC组、anti-miR-21a-5p组、miR-NC+高剂量组和miR-21a-5p+高剂量组的细胞活力分别为0.52±0.04、1.12±0.08、0.94±0.09和0.57±0.04,凋亡率分别为(23.04±1.82)%、(9.86±0.73)%、(9.47±0.64)%和(24.96±1.94)%,miR-21a-5p表达水平分别为1.00±0.10、0.43±0.04、1.00±0.09和2.12±0.18,COX2蛋白相对表达水平分别为0.86±0.05、0.39±0.04、0.41±0.03、0.78±0.07,PGE2蛋白相对表达水平分别为0.74±0.06、0.38±0.07、0.36±0.02、0.71±0.05,anti-miR-21a-5p组的上述指标与anti-miR-NC组比较,miR-21a-5p+高剂量组的上述指标与miR-NC+高剂量组比较,在统计学上差异均有统计学意义(均PmiR-21a-5p和COX2/PGE2通路的表达,从而抑制AngⅡ诱导的心肌肥大。

关键词：山楂叶总黄酮心肌肥大血管紧张素Ⅱ 细胞增殖凋亡

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Effect of ultrasound on reverse leakage current of silicon Schottky barrier structure

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Journal of Semiconductors 2016年第12期37卷 5-11页

作者： O.Ya Olikh K.V.Voitenko R.m.Burbelo ja m.Olikh Faculty of Physics Taras Shevchenko National University of Kyiv V Lashkaryov Institute of Semiconductor Physics National Academy of Sciences of Ukraine

The influence of ultrasonic loading on reverse current-voltage characteristics of mo/n-n＋-Si structures has been investigated. The research of leakage current variation has been carried out for various ultrasonic wave frequencies （4.1 and 8.4 mHz）, intensities （up to 0.8 W/cm2） and loading temperatures （130-330 K）. The observed reversible acoustically induced increase in reverse currents was as large as 60%. It has been found that dominant charge transfer mechanisms are the thermionic emission （at high temperature） and the phonon-assisted tunneling （at low temperature）. The ultrasound loading affects both processes due to the decrease of Schottky barrier height and binding energy of the electron on the trap.

关键词： Schottky contact leakage current ultrasound influence

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Growth characteristics and pathogenic consequences of predominant entomopathogenic Yukon soil fungi mortierella alpina and Penicillium expansum,and effectiveness of met52®,against larvae of the winter tick,Dermacentor albipictus

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Studies in Fungi 2019年第1期4卷 101-110页

作者： Yoder ja Krieger m Oakley m Trotter J Schmelzer P Niksic A Rodell Bm Klever LA Department of Biology Wittenberg UniversitySpringfieldOH45501USA Champagne and Aishihik First Nations Haines JunctionYTY0B 1L0CAN Oakley Veterinary Services HainesAK99827USA

Water activity-temperature relationships are reported for Yukon soil-isolated strains of mortierella alpina and Penicillium expansum that are natural enemies to larvae(infestation stage)of the winter tick Dermacentor *** fungal strains are psychrotrophs,characterized by low thermal growth ranges,consistent with their occurrence in Yukon *** contrast to ***,*** is more temperature sensitive,has a higher requirement,and is more virulent to tick *** and Biological Control Officers should note that for tick population control these *** and *** strains grow and sporulate well under moderate temperature and humid *** experiments used met52®Bioinsecticide as a positive control,and this is the first study that demonstrates the effectiveness of this commercial product against winter tick larvae.

关键词： Alaska biological control Canada elk tick horse tick moose tick temperature water activity

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Coastal landscape evolution tracked from late Holocene wave-cut benches in the Sinan Archipelago,Southwest Korea

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Geoscience Frontiers 2020年第1期11卷 293-301页

作者： Sung-ja Choi Bokchul Kim Yong Sik Gihm Sanghoon Kwon Geology Division Korea Institute of Geoscience and Mineral ResourcesDaejeon34132Republic of Korea Department of Earth System Sciences Yonsei UniversitySeoul03722Republic of Korea School of Earth Sciences The Ohio State UniversityColumbusOH43210USA

Glacio-isostatic adjustment(GIA)and tectonic activity are important factors in the formation of marine *** Holocene wave-cut benches in the eastern part of the West Sea of Korea,also called the Yellow Sea,can be divided into two steps:531 cm above sea level(ASL)for the upper bench(T2)and 464-481 cm ASL for the lower bench(T1).Sediments on the benches a re classified into four units,and are interpreted to be beach deposits acco rding to gravel shape,textu re,and seaward *** ove rlying sediment indicates that T2 was formed at approximately 530 cm ASL before 2900 yr BP,and T1 at approximately 460-480 cm ASL before 1520 yr *** Holocene(4000-2000 yr BP)relative sea level(RSL)curves based on GIA models are inconsistent with the wave-cut bench *** T1 and T2 benches to the RSL curves of the West Sea,the upper and the lower benches were uplifted by approximately 5-8 m and 4-7 m,*** the area is several hundred kilometers away from plate boundaries,the high frequency of earthquakes in the West Sea may have induced the uplift of wave-cut benches during the last 2000 *** indicate that the west coast of the Korean Peninsula(KP)should no longer be considered an area of subsidence,but be assigned to a regime of uplift during the late Holocene.

关键词： West Sea of Korea Yellow Sea Late Holocene Wave-cut benches Beach sediment Uplift Tectonics

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Real-time measurements of Secondary Organic Aerosol from the Photooxidation of Naphthalene using Single Particle mass Spectrometry

Real-time Measurements of Secondary Organic Aerosol from the...

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十一届全国气溶胶会议暨第十届海峡两岸气溶胶技术研讨会

作者： ang Chen Robert m.Healy Shouming Zhou John C.Weng yer Insitute of Earth Environment Chinese Academy of Sciences Department of Chemistry and Environmental Research Institute University College Cork

Naphthalene is the most abundant polycyclic aromatic hydrocarbon detected in urban air and has recently been identified as an important precursor for the formation of secondary organic aerosol（SOA） in the atmosphere. In this work, a series of simulation chamber experiments has been performed on the photooxidation of naphthalene under a variety of reaction conditions. The decay of naphthalene was monitored using in situ FTIR spectroscopy and the formation and evolution of SOA was followed using a scanning mobility particle sizer. An Aerosol Time-of-Flight mass Spectrometer（ATOFmS） was used to determine the chemical composition of the SOA in real-time. In experiments using NOx as the hydroxyl radical precursor, the single particle mass spectra were found to change slowly over a period of hours. The positive ion mass spectra initially contained hydrocarbon fragments typical of aromatic species which are tentatively attributed to ring-retaining oxidation products such as naphthol and nitronaphthalene. After 3-4 hours the intensity of the hydrocarbon fragments was significantly reduced and the negative ion mass spectra displayed characteristic features of oxidized organic aerosol and nitrates. Interestingly, some of these peaks continued to increase after the lights were turned off, suggesting that particle phase processing was maintained, even under dark conditions. The results from these experiments indicate that ATOFmS can be used to monitor chemical changes in SOA in real-time and is a potentially useful tool for investigating aerosol formation and ageing.

关键词： Secondary Organic Aerosol Naphthalene online single particle mass spectrometer

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Developments in diagnosis and treatment of paediatric septic arthritis

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World Journal of Orthopedics 2022年第2期13卷 122-130页

作者： Cornelia m Donders Anne J Spaans Herbert van Wering Christiaan ja van Bergen Department of Orthopaedic Surgery Meander Medical CentreAmersfoort 3813 TZNetherlands Department of Orthopaedic Surgery Sint MaartenskliniekNijmegen 6574 NANetherlands Department of Paediatrics Amphia HospitalBreda 4818 CKNetherlands Department of Orthopedic Surgery Amphia HospitalBreda 4818 CKNetherlands

Acute septic arthritis in children is an orthopaedic emergency.A delay in diagnosis and inappropriate treatment can result in devastating damage to the joint with lifelong disability as a *** clinical presentation can be a diagnostic challenge,especially in young children.A recent systematic review showed that joint tenderness and fever are important signals of septic *** is helpful in detecting the presence of a joint *** radiographs may show bone changes but magnetic resonance imaging is the most reliable imaging study for detecting concomitant *** diagnosis of acute septic arthritis is highly suggestive when pus is aspirated from the joint,in case of a positive culture or a positive gram stain of the joint fluid,or if there is a white blood-cell count in the joint fluid of more than 50000/*** aureus is the most commonly cultured *** systematic reviews have identified the most effective drainage techniques,including needle aspiration,arthroscopy and arthrotomy,depending on the affected *** the drainage procedure it is important to monitor the clinical and laboratory *** drainage procedures may be necessary in select cases.

关键词： Septic arthritis Paediatric Children Analysis Treatment Drainage

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Decadal Changes in Climatological Intraseasonal Fluctuation of Subseasonal Evolution of Summer Precipitation over the Korean Peninsula in the mid-1990s

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Advances in Atmospheric Sciences 2011年第3期28卷 591-600页

作者： Wonmoo KIm Jong-Ghap JHUN Kyung-ja HA masahide KImOTO School of Earth and Environmental Sciences/Research Institute of Oceanography Seoul National University151-742Korea Divison of Earth Environmental System Pusan National University609-735Korea Atmosphere and Ocean Research Institute University of Tokyo277-8564Japan

Decadal changes in the subseasonal evolution and the phase-locked climatological intraseasonal fluctuation of summertime rainfall over the Korean Peninsula before and after the mid-1990s are *** activity and the migration speed of the monsoon rain band over the East Asian region are altered in the recent decade,resulting in the drier conditions in late spring and the earlier onset of *** early August when a climatological monsoon break was clear in the earlier decade,the precipitation has increased dramatically with a meridional *** response to the enhanced convection over the South China Sea and southeastern China provides a favorable condition for more precipitation in early August through the changes in moisture transport and tropical cyclone passage.

关键词： decadal change intraseasonal fluctuation East Asian summer monsoon

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Entomopathogenic fungi isolated from Yukon soil against unfed larvae of the winter tick,Dermacentor albipictus

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Studies in Fungi 2019年第1期4卷 123-134页

作者： Dobrotka CJ Krieger m Oakley m Trotter J Rodell Bm Stein KL Klever LA Fisher KA Yoder ja Department of Biology Wittenberg UniversitySpringfieldOH45501USA Champagne and Aishihik First Nations Haines JunctionYTY0B 1L0CAN Oakley Veterinary Services HainesAK99827USA

Fungal composition of Yukon soil samples consisted of 29 soil saprobes common to acidified forest,subarctic *** of the fungi identified are psychrotrophs,capable of growth at both 4℃ and 20℃.Of these,a total of 17 fungi were found to be entomopathogenic by winter tick(Dermacentor albipictus)larval bioassays:Aspergillus flavus,Beauveria,namely ***,mucor,Paecilomyces yielded>~70%larval mortality and the remainder,mostly mortierella and Penicillium,averaged~40%larval *** where elk(Cervus elaphus canadensis)are observed had an overall greater quantity,and diversity of entomopathogenic soil fungi than sites where elk are not *** diversity of fungi at elk-inhabited sites is likely a product of warmer soil microclimate(hillsides where elk are seen,lose snow earlier than other areas),animal presence,and increased nutrient *** conclude that Yukon soils contain fungi that naturally regulate populations of *** fungi are archived at the Wittenberg University Fungus Collection,Springfield,OH,USA.

关键词： Biological control mycoflora moose tick elk tick horse tick Canada Alaska

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