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Multiple Antibiotic Resistance and Heavy Metal Resistance Profile of Bacteria Isolated from Giant Freshwater Prawn (Macrobrachium ros.n.ergii) Hatchery

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Agricultural sciences in China 2009年第6期8卷 740-745页

作者： s W Lee M najiah W Wendy A Zahrol M nadirah Department of Fishery and Aquaculture Faculty of Agrotechnology and Food Science Universiti Malaysia Terengganu

In this article, antibiogram and heavy metal resistance profile of bacteria isolated from giant freshwater prawn （Macrobrachium ros.n.ergii） hatchery in Malaysia are described. Although giant freshwater prawn was introduced into Malaysia s.n.e the 1980s, there was.n. database information on antibiogram and heavy metal resistance profile of bacteria from giant freshwater prawn （34. ros.n.ergii） hatchery in Malaysia. Therefore, this study was carried out to determine the effectiveness of antibiotic and heavy metal resistance profile to control bacterial diseases in M. ros.n.ergii hatchery. The results can provide valuable information for local M. ros.n.ergii post-larval producer. Antibiotic s.n.itivity test was carried out by disk-diffusion method against 15 types of antibiotics as follows： oxolinic acid （2 μg）, ampicillin （10μg）, erythromycin （15μg）, furazolidone （15 μg）, lincomycin （15μg）, amoxicillin （25 μg）, colistin sulphate （25 μg）, doxycycline （30μg）, florfenicol （30 μg）, flumequine （30 lag）, nalidixic acid （30μg）, tetracycline （30μg）, oleandomycin （15μg）, fosfomycin （50μg）, and spiramycin （100 μg）, whereas heavy metal resistance profile of the pres.n. bacterial isolates was determined by 2-fold agar dilution technique. In this study, 5 types of bacteria were successfully isolated; they were Aeromonas spp. （n = 77）, Escherichia coli （n = 73）, Edwardsiella spp. （n = 62）, salmonella spp. （n = 75）, and Vibrio spp. （n = 43）. The result showed that furazolidone was the most effective antibiotic to control the bacteria isolated in this study, approximately 89.7% of the bacterial isolates were s.n.itive to this antibiotic. Multiple antibiotic resistance （MAR） index indicated that the hatchery water source and M. ros.n.ergii post-larval and sediment tanks were at high-risk exposure to the tested antibiotic. Furthermore, all the tested heavy metals （Cd2＋, Cr6＋, Hg2＋, and Cu2＋） failed to inhibit the growth of the bacterial isolates. Therefore, it indicated that the water

关键词： Macrobrachium ros.n.ergii hatchery antibiotic heavy metal MAR index

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Characterization of ion irradiated silicon surfaces ablated by laser-induced breakdown spectroscopy

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Chinese Physics B 2018年第8期27卷 505-510页

作者： T Iqbal M Abrar M B Tahir M seemab A Majid s Rafique Department of Physics Faculty of Sciences University of Gujrat Hafiz Hayat Campus Department of Physics Hazara University Mansehra Department of Physics University of Engineering and Technology (UET)Lahore Pakistan

Low energy metallic ions, generated by a Q-switched nd：YAG laser （1064-nm wavelength, 10-mJ energy, 9-nm 12-ns-pulse width, 1011 W/cm2 intensity） irradiated on a silicon substrate to modify various properties, such as electrical, morphological, and structural modifications. Thoms.n.parabola technique is used to calculate the energy of these metallic ions whereas the electrical conductivity is calculated with the help of Four-point probe. Interestingly circular tracks forming chain like damage trails are produced via these energetic ions which are carefully examined by optical microscopy. It is observed that excitation, ionization, and cascade collisions are responsible for surface modifications of irradiated samples. Four-point probe analysis revealed that the electrical conductivity of substrate has reduced with increas.n. trend of atomic number of irradiated metallic ions （A1, Ti, Cu, and Au）. The x-ray diffraction analysis elucidated the crystallographic changes leading to reduction of grain size of n-type silicon substrate, which is also associated with the metallic ions used. The decreas.n. trend of conductivity and grain size is due to thermal stresses, scattering effect, structural imperfections, and non-uniform conduction of energy absorbed by substrate atoms after the ion irradiation.

关键词： ablation Thoms.n.parabola technique four-point probe

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Five Experimental Tests on the 5-Qubit IBM Quantum Computer

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Journal of Applied Mathematics and Physics 2018年第7期6卷 1460-1475页

作者： Diego García-Martín Germán sierra Instituto de Fisica Teórica (IFT) UAM-CsIC Universidad Autónoma de Madrid Cantoblanco Madrid Spain

The 5-qubit quantum computer prototypes that IBM has given open access to on the cloud allow the implementation of real experiments on a quantum processor. We pres.n. the results obtained in five experimental tests performed on these computers: dense coding, quantum Fourier transforms, Bell’s inequality, Mermin’s inequalities (up to n=5) and the construction of the prime state . These results serve to assess the functioning of the IBM 5Q chips.

关键词： Quantum Computation Quantum Informatio

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Detecting the pres.n.e of natural forests us.n. airborne laser scanning data

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Forest Ecosystems 2023年第6期10卷 668-680页

作者： Marie-Claude Jutras-Perreault Terje Gobakken Erik næsset Hans OleØrka Faculty of Environmental sciences and natural Resource Management Norwegian University of Life SciencesNMBUP.O.BoxNO-1432ÅsNorway

Centuries of forest exploitation have caused significant loss of natural forests in Europe,leading to a decline in populations for many *** prevent further loss in biodiversity,the norwegian government has set a target of protecting 10%of the forested ***,recent data from the national Forest Inventory(nFI)reveals that less than 2%of norway's forested area consists of natural *** identify forests with high conservation value,we used vertical and horizontal variables derived from airborne laser scanning(ALs)data,along with nFI plot *** study aimed to predict the pres.n.e of natural forests across three counties in southeastern norway,us.n. three different definitions:pristine,near-natural,and semi-natural *** forests are scarce,and their underrepres.n.ation in field reference data can compromise the accuracy of the *** address this,we assessed the potential gain of including additional field data specifically targeting natural forests to achieve a better balance in the ***,we examined the impact of stratifying the data by dominant tree species on the performance of the *** results revealed that semi-natural forests were the most accurately predicted,followed by near-natural and pristine forests,with Matthews correlation coefficient values of 0.32,0.24,and 0.17,*** additional field data did not improve the ***,stratification by species improved the accuracy of predictions for near-natural and semi-natural forests,while reducing accuracy for pristine *** use of horizontal variables did not improve the *** study demonstrates the potential of ALs data in identifying forests with high conservation *** provides a basis for further research on the use of ALs data for the detection and conservation of natural forests,offering valuable insights to guide future forest preservation efforts.

关键词： natural forest ALs naturalness Vertical variables Horizontal variables Biodiversity Forest condition Ecosystem services

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男性前列腺特异性抗原升高的简略双参数前列腺MRI特征

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国际医学放射学杂志 2018年第1期 93-94页

作者： C.K.Kuhl n.Krmer s.n.belung A.Heidenreich s.schrading 张俊峰 Department of Diagnostic University of Aachen

摘要目的在前列腺特异性抗原(PsA)升高且活检结果为阴性的男性病人中,明确简略双参数MRI诊断临床显著性前列腺癌的准确性,并与多参数MRI进行比较。确定双参

关键词： MRI 多参数双参数前列腺特异性

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Confirmation/Observation of Hindered E2 strengths in ^(16,18)C

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原子核物理评论 2009年第S1期26卷 70-74页

作者： H. J. Ong n. Imai D. suzuki H. Iwasaki H. sakurai T. Onishi M. suzuki s. Ota s. Takeuchi T. nakao Y. Togano Y. Kondo n. Aoi H. Baba B. shawn Y. Ichikawa M. Ishihara T. Kubo K. Kurita T. Motobayashi T. nakamura T. Okumura Y. Yanagisawa RCnP Osaka University KEK Department of Physics University of Tokyo RIKEn nishina Center RIKEN Cns University of TokyoRIKEN Campus Department of Physics Rikkyo University Department of Physics Tokyo Institute of Technology

The lifetime of the first excited 2+ state in 18C was measured us.n. an upgraded recoil shadow method to determine the electric quadrupole transition. The measured mean lifetime is 18.9±0.9(stat)±4.4(syst)ps,which corresponds to a B(E2; 2+1→0+gs) value of (4.3± 0.2±1.0) e2fm4,or about 1.5 Weisskopf units. The mean lifetime of the first 2+ state in 16C was remeasured to be about 18 ps,about four times shorter than the value reported previously. This discrepancy was explained by incorporating the γ-ray angular distribution measured in this work into the previous measurement. The observed transition strengths in 16,18C are hindered compared to the empirical transition strengths,indicating that the anomalous hindrance observed in 16C persists in 18C.

关键词： neutron-rich nuclei lifetime measurement B(E2)

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Effect of Varying the PECVD Microwave Power in s.n.:H Deposition on the Effective Lifetime in silicon

Effect of Varying the PECVD Microwave Power in SiNx:H Deposi...

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第十五届国际光伏科学与工程大会

作者： Daniel n.Wright Erik s.Marstein s.Ponce-Alcántara C.Del Canizo Arve Holt section for Renewable Energy Institute for Energy Technology N-2027 Kjeller Norway Instituto de Energía solar Universidad Politécnica de Madrid ETSI Telecomunicación-Ciudad Universitaria s/n.28040MadridSpain

This paper describes a study of the dependence of carrier lifetimes in mono- and multicrystalline (mc) silicon (si) on the microwave (MW) plasma excitation power used during plasma enhanced chemical vapour deposition of hydrogenated si nitride films. In as-deposited films, the effective lifetime (τ) was relatively low. However, τ increased when the MW power was increased. After annealing, τ increased significantly, especially for higher MW powers. A near doubling of the bulk lifetime of mc-si was observed at a MW power of 150W. The role of hydrogen in the observed passivation is discussed.

关键词： silicon nitride PECVD Passivation Lifetime Annealing

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Wavefront阵列机—从概念到实现

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计算机工程与科学 1988年第4期 69-83页

作者： s.Y.Kung s.C.Lo s.n.Jean J.n.Hwang 刘滨海 University of southern California

一、引言利用通用巨型机进行实时信号和图象处理,额外的系统管理开销使其处理速度降低

关键词：阵列机容错技术处理单元结点数据驱动 sIMD 计算技术奇点 Wavefront 局部存贮器阵列处理机概念思维形式

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Effect of Rolling Reduction on Microstructure and Mechanical Properties of Mg-9Gd-3Y-0.5Zr Alloys

Effect of Rolling Reduction on Microstructure and Mechanical...

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中国材料大会2012

作者： s.Q. Li W.n. Tang R.s. Chen E.H. Han W. Ke state Key Laboratory for Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences

ISBN: (纸本)9783037856086;3037856084

Rolling process.n. has been carried out on samples cut from the extruded Mg-9Gd-3Y-0.5Zr seamless tubes. Effects of rolling reduction, 5%, 20% and 70% per pass, on its microstructure and mechanical properties were investigated. The results showed that the strength and ductility varied with increas.n. rolling passes at different rolling reduction. The strength of the alloy rolled by 5% reduction per pass gradually improved with increas.n. rolling passes, and its ductility remained basically constant. However, when 20% reduction per pass was applied, the strength and ductility of the alloy after rolling increased at first and then decreased a little after the accumulative strain higher than 52%. Moreover, as reduction reached 70% per pass, macro-cracks were induced when rolling at 420℃, while the samples were rolled at a high temperature of 500℃ and a larger reduction of 70% per pass exhibited the mechanical properties comparable to those fabricated by 5% and 20% reduction. This indicated that a relatively higher productivity via rolling as well adequate mechanical properties can reach for the large scale of industrial products.

关键词： Mg-Gd-Y alloy Rolling Reduction per pass Microstructure Mechanical properties Ageing

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Optical actuation of a micromechanical photodiode via the photovoltaic-piezoelectric effect

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Microsystems & nanoengineering 2021年第2期7卷 167-175页

作者： A.Rampal R.n.Kleiman Department of Engineering Physics McMaster UniversityHamiltonONL8S 4L7Canada Pres.n. address:CircuitMind Inc 185 Spadina AvenueTorontoONM5T 2C6Canada

Radiation pressure and photothermal forces have been previously used to optically actuate micro/nanomechanical structures fabricated from semiconductor piezoelectric materials such as gallium ars.n.de(GaAs).In these materials,coupling of the photovoltaic and piezoelectric properties has.n.t been fully explored and leads to a new type of optical actuation that we call the photovoltaic-piezoelectric effect(PVPZ).We demonstrate this effect by electrically measuring,via the direct piezoelectric effect,the optically induced strain in a novel torsional *** micron-scale torsional res.n.tor is fabricated from a lattice-matched s.n.le-crystal molecular beam epitaxy(MBE)-grown GaAs photodiode *** find that the strain depends on the product of the electro-optic responsivity and piezoelectric constant of *** photovoltaic-piezoelectric effect has important potential applications,such as in the development of configurable optical circuits,which can be used in neuromorphic photonic chips,process.n. of big data with deep learning and the development of quantum circuits.

关键词： res.n.tor piezoelectric effect

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