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作者： (加)masa

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Is Chloroplast Movement in Tobacco Plants Influenced Systemically after Local Illumination or Burning Stress?

作者： masa

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Journal of Integrative Plant Biology 2008年第10期50卷 1292-1299页

作者： Jan Nau Monika Rolencov Vladimíra Hlavkov Laboratory of Biophysics Department of Experimental Physics Palacky' University tr. Svobody 26 77146 Olomouc Czech Republic

Chloroplast movement has been studied in many plants mainly in relation to the local light, mechanical or stress effects. Here we investigated possible systemic responses of chloroplast movement to local light or burning stress in tobacco plants （Nicotisna tabacum cv. Samsun）. Chloroplast movement was measured using two independent methods： one with a SPAD 502 Chlorophyll meter and another by collimated transmittance at a selected wavelength （676 nm）. A sensitive periodic movement of chloroplasts was used in high or low （2 000 or 50 μmol/m2 per s photosynthetically active radiation, respectively） cold white light with periods of 50 or 130 min. Measurements were carried out in the irradiated area, in the non-irradisted area of the same leaf or in the leaf located on the stem below the irradiated or bumed one. No significant changes in systemic chloroplast movement in non-irradiated parts of the leaf and in the non-treated leaf were detected. Our data indicate that chloroplast movement in tobacco is dependent dominantly on the intensity and spectral composition of the incident light and on the local stimulation and state of the target tissue. No systemic signal was strong enough to evoke a detectable systemic response in chloroplast movement in distant untreated tissues of tobacco plants.

关键词： buming chloroplast movement irradiance systemic response tobacco.

Evaluation of Pencil Lead Based Electrodes for Electrocardiogram Monitoring in Hot Spring

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Computers, Materials & Continua 2021年第2期66卷 1411-1425页

作者： ratha Yeu Namhui ra Seong-A Lee Yunyoung Nam Department of ICT Convergence Rehabilitation Engineering Soonchunhyang UniversityAsan31538Korea Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea Department of Occupational Therapy Soonchunhyang UniversityAsan31538Korea Department of Computer Science and Engineering Soonchunhyang UniversityAsan31538Korea

Electrocardiogram(ECG)electrodes are conductive pads applied to the skin to measure cardiac ***/AgCl electrodes are the commercial product which widely used to obtain *** monitoring the ECG in a hot spring,Ag/AgCl electrodes must be waterproofed;however,this is time-consuming,and the adhesive may tear the skin on *** solving the problem,we developed the carbon pencil lead(CPL)electrodes for use in hot *** CPL and Ag/AgCl electrodes were connected to ECG100C’s *** Performance was evaluated in three conditions as following:hot spring water with and without bubble,and in cold *** each environment,the procedure was followed by three different protocols that are recording from the dry condition,hot spring water immersion with and without movement,post hot spring water *** dry and wet conditions,both electrodes can obtain the waveform of the ECG signal in which all PQRST waves were ***,the signal quality of both types of electrodes was different in water immersion with and without *** overall morphology obtained by Ag/AgCl electrodes was unstable higher than that of CPL electrodes in immersion without movement *** CPL electrodes provided better ECG waveform quality compared to Ag/AgCl electrodes in which the ECG signal had high waveforms distortion in water immersion with movement condition.

关键词： Carbon pencil lea ECG electrodes ECG monitoring hot spring water cold water hot spring water bubble

Thirteen-year growth response of ponderosa pine plantations to dominant shrubs(Arctostaphylos and Ceanothus)

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Journal of Forestry Research 2020年第4期31卷 1445-1451页

作者： Jianwei Zhang Matt D.Busse Gary O.Fiddler ed Fredrickson USDA Forest Service Pacific Southwest Research Station3644 Avtech ParkwayReddingCA 96002USA USDA Forest Service Pacific Southwest Region3644 Avtech ParkwayReddingCA 96002USA Thunder Road Resources 21169 Falling Leaf RdReddingCA 96003USA

Thirteen-year growth response of ponderosa pine to various manipulations of understory vegetation was studied to determine if a threshold of understory cover can be established for plantation productivity and whether nitrogen-fixing Ceanothus species benefit plantation growth compared to non N-fixing Arctostaphylos species,given their ability to improve site *** showed that completely controlling competing vegetation increased plantation growth,as was universally expected,but the effects of partial shrub control on plantation performance was *** did not find a benefit of nitrogenfixing shrubs on tree growth,as young plantation growth was slightly better in the non N-fixing plots compared to the N-fixing plots due to differences in shrub *** understory cover threshold for tree growth was not *** to the overriding effect of shrub competition,controlling herbaceous species had little effect on plantation growth even though it benefited tree seedling survival.A long-term value of N-fixing shrubs at these sites,if there is one,must be balanced by successful plantation establishment and rapid early growth.

关键词： Competing vegetation control Manzanita Nitrogen-fixing Ceanothus Pinus ponderosa growth Shrub cover

Histone methylation in Huntington's disease:are bivalent promoters the critical targets?

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Neural Regeneration Research 2018年第7期13卷 1191-1192页

作者： Nóra Zsindely László Bodai Department of Biochemistry and Molecular Biology University of Szeged

Huntington’s disease（HD）is a currently incurable,late onset,progressive,ultimately fatal neurological disorder（Bates et al.,2015）.We have recently published the results of comprehensive genetic interaction tests aimed at identification of histone methyltransferases and demethylases involved in HD pathogenesis in a Drosophila model of the disease（Song et al.,2018）.

关键词： Histone methylation in Huntington’s disease:are bivalent promoters the critical targets PRC HD MLL

Soundscape Dynamics at Anuran Reproductive Sites in Pannonian Biogeographical Region：Effects of Road Noise on Vocal Activity

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Asian Herpetological Research 2016年第1期7卷 34-40页

作者： András WEIPERTH ed SMITH Szilvia SIMIGLA Miklòs PUKY Yezhong TANG MTA Centre Jor Ecological Research Danube Research Institute H- 1113 Budapest Karolina ut 29 Hungary Department of Psychology University of Maryland College Park MD 20742 USA Chengdu Institute of Biology Chinese Academy of Sciences # 9 of Section 4 South Renmin Road Chengdu 610041 Sichuan China

The emerging field of soundscape ecology views ecosystems in terms of biophony, geophony and anthrophony. Soundscape ecology considers the effects of sound on fauna, and this research focuses on anuran breeding lek soundscapes. The sensitivity of anuran breeding leks to acoustic disturbances makes breeding leks an important venue for a comparative soundscape study. We made long-term（〉 24 h） sound recordings in three representative wetlands and short-term（〈 30 min） recordings in ten sites in the Pannonian Biogeographical Region of Hungary and around the Hungary and Slovakia border. Long-term soundscapes of the floodplain stretch, where there is relatively minor anthrophonical disturbance, showed an obvious circadian change in sound intensities. The site with moderate sound contamination exhibited a disturbed pattern of circadian sound variation, while the site with heavy traffic noise displayed an apparently random temporal soundscape. At different amphibian breeding sites during mating season, our short-term recordings were dominated by anuran calls, bird songs and wind noises, while insect calls and rain were present to a lesser degree. Our study indicates that vehicle traffic noise is a severe imposition to the natural soundscape, and suggests that soundscape monitoring can provide a reliable and sensitive index of environmental change for both short-term and long-term periods.

关键词： soundscape monitoring anuran breeding site biophony geophony anthrophony

Enzyme inhibitory activity of Dioscorea nipponica Makito hydroethanolic extracts of leaves and tubers in relation to their major secondary metabolites

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作者： ed McDonald.

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Food Bioscience 2022年第6期50卷 623-635页

作者： Aušra Adomėnienė Petras Rimantas Venskutonis Kaunas University of Technology Department of Food Science and TechnologyRadvilėnų pl.19KaunasLT-50254Lithuania

Different anatomical parts of Dioscorea nipponica Makito have been used in foods and folk medicines for their nutritional and pharmacological properties;however,the scientific data on enzyme inhibitory activities and phytochemicals in plant extracts remain rather *** information is important for expanding possible uses of plant origin preparations in *** study,using commonly applied assays,evaluated inhibitory activity of 70%ethanol extract of *** leaves and tubers against such physiologically important enzymes asα-amylase,α-glucosidase,acethylcholinesterase,and angiotensin-converting enzyme(ACE).Inhibition ofα-glucosidase and acethylcholinesterase required lower leaf extract concentrations as compared with other two *** IC50 values ofα-glucosidase andα-amylase inhibition were 66.08 and 438μg/mL,respectively,while the inhibition of ACE at 250–1250μg/mL was from 28.02±1.17%to 77.13±0.78%.The mode of inhibition ofα-glucosidase and acethylcholinesterase was evaluated by the kinetic *** and tuber extracts displayed a mixed-type non-competitive mode ofα-glucosidase *** composition of extracts was determined by UPLC-QTOF/MS and HPLC-UV *** extract was remarkably stronger enzyme inhibitor than tuber extract and it may be explained by the differences in the secondary metabolite ***,chlorogenic acids and quercetin glycosides,which are well-known enzyme inhibitors,were the main phytochemicals in the leaf extract,while steroidal glycosides,peptides and oligomeric sugars were the major constituents in the tuber *** is expected that new knowledge on *** will serve for its valorisation in developing new health beneficial ingredients for functional foods and nutraceuticals.

关键词： Yam α-Amylase α-Glucosidase Acethylcholinesterase Angiotensin-converting enzyme Phytochemicals

A Key Recovery System Based on Password-Protected Secret Sharing in a Permissioned Blockchain

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Computers, Materials & Continua 2020年第10期65卷 153-170页

作者： Gyeong-Jin ra Chang-Hyun Roh Im-Yeong Lee First Soonchunhyang University Asan-si31538Korea

In today’s fourth industrial revolution,various blockchain technologies are being actively researched.A blockchain is a peer-to-peer data-sharing structure lacking central *** a user wishes to access stored data,she/he must employ a private key to prove ownership of the data and create a *** the private key is lost,blockchain data cannot be *** solve such a problem,public blockchain users can recover the key using a wallet ***,key recovery in a permissioned blockchain(PBC)has been but little *** PBC server is Honest-but-Curious(HBC),and should not be able to learn anything of the user;the server should simply recover and store the *** server must also be resistant to malicious ***,key recovery in a PBC must satisfy various security ***,we present a password-protected secret sharing(PPSS)key recovery system,protected by a secure password from a malicious key storage server of a *** describe existing key recovery schemes and our PPSS scheme.

关键词： Password-protected secret sharing key recovery blockchain wallet security