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Simultaneous imaging and measurement of tensile stress on cornea by using a common-path optical coherence tomography system with an external contact reference

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Chinese Optics Letters 2008年第12期6卷 910-912页

作者： utkarsh Sharma Jin.u.Kang Beckman Institute for Advanced Science and Technology university of Illinois at urbana-Champaign405 north Mathews Avenue Urbana Department of Electrical and Computer Engineering Johns Hopkins university 3400 N.Charles StreetBaltimore

The objective of this study is to demonstrate that tensile stress resulting due to applied force on cornea can be accurately measured by using a time-domain common-path optical coherence tomography （OCT） system with an external contact reference. The unique design of the common-path OCT is utilized to set up an imaging system in which a chicken eye is placed adjacent to a glass plate serving as the external reference plane for the imaging system. As the force is applied to the chicken eye, it presses against the reference glass plate. The modified OCT image obtained is used to calculate the size of contact area, which is then.u.ed to derive the tensile stress on the cornea. The drop in signal levels upon contact of reference glass plate with the tissue are extremely sharp because of the sharp decline in reference power levels itself, thus providing us with an accurate measurement of contact area. The experimental results were in good agreement with the numerical predictions. The results of this study might be useful in providing new insights and ideas to improve the precision and safety of currently used ophthalmic surgical techniques. This research outlines a method which could be used to provide high resolution OCT images and a precise feedback of the forces applied to the cornea simultaneously.

关键词： Simultaneous imaging and measurement of tensile stress on cornea by using a common-path optical coherence tomography system with an external contact reference

Seismic ground motion variations resulting from site conditions

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Geodesy and Geodynamics 2014年第2期5卷 9-15页

作者： Silacheva n Kulbayeva u Kravchenko n LLC Institute of Seismology

Amplification of seismic ground motions in the territory of Almaty city is evaluated by using different methods. The pattern and probable causes of ground motion variations in different engineering-geological conditions are characterized. An expeditious application of these techniques within a complex methodical approach for Almaty city microzonation is considered.

关键词： ground motion variations spectral ratio methodical approach

Swine flu pandemic:a global concern

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Asian Pacific Journal of Tropical Medicine 2010年第1期3卷 81-82页

作者： Asad u Khan Interdisciplinary Biotechnology unit AMU Aligarh 202002 India

Recently WHO has again declared Influenza pandemic due to the outbreak of H1n1 which has infected over 254,206 people in 80 countries,with 625 *** lab has started working on the proteome analysis of H1n1,2009 out brea... 详细信息

关键词： Influenza A Virus Swine

Size Dependent Physical Properties of nanostructured α-Fe_2O_3 Thin Films Grown by Successive Ionic Layer Adsorption and Reaction Method for Antibacterial Application

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Journal of Materials Science & Technology 2015年第1期31卷 1-9页

作者： A.u.ubale M.R.Belkhedkar nanostructured Thin Film Materials Laboratory Department of PhysicsGovt.Vidarbha Institute of Science and Humanities Department of Physics Shri Shivaji College

Thin films of nanostructured α-FeOwith thickness of 1 56,203 and 251 nm were deposited by successive ionic layer adsorption and reaction(SILAR) method onto glass substrates using FeCl-6HO and naOH as cationic and anionic *** X-ray diffraction studies revealed that,α-FeOthin films are nanocrystalline in nature with rhombohedral *** morphological properties were investigated by field emission scanning electron and atomic force *** optical studies showed that α-FeOexhibits direct as well as indirect optical band gap *** electrical resistivity of α-FeOat 305 K decreases from 11.76×102 to9.46 × 10~2 Ω cm as film thickness increases from 156 to 251 *** thermo-emf measurements confirmed that α-FeOexhibits n-type *** nanocrystalline α-FeOexhibits antibacterial character against Staphylococcus aureus and its efficiency increases from 37.50%to 87.50%depending on crystallite size.

关键词： Thin films nanostructures AFM(atomic force microsc

SBA-16负载金属氧化物催化剂合成、表征及催化CO氧化反应活性（英文）

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催化学报 2015年第8期36卷 1237-1241页

作者： n.K.Renuka K.Anas C.u.Aniz 卡利卡特大学化学系印度南方化学公司研发部

将V2O5,CeO2和CuO分散到提取自稻米壳的SBA-16上,考察了其催化CO氧化反应活性,并采用X射线衍射、扫描电镜、透射电镜、程序升温还原和紫外漫反射光谱对所制催化剂进行了表征.结果表明,掺杂CuO的介孔氧化硅是一种有前景的催化剂,其CO转... 详细信息

将V2O5,CeO2和CuO分散到提取自稻米壳的SBA-16上,考察了其催化CO氧化反应活性,并采用X射线衍射、扫描电镜、透射电镜、程序升温还原和紫外漫反射光谱对所制催化剂进行了表征.结果表明,掺杂CuO的介孔氧化硅是一种有前景的催化剂,其CO转化率可达98%以上.

关键词：稻米壳灰介孔氧化硅 SBA-16 金属氧化物催化剂一氧化碳氧化

Sawdust Short Fiber Reinforced Epoxidized natural Rubber: Insight on Its Mechanical, Physical, and Thermal Aspects

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Journal of Renewable Materials 2020年第12期8卷 1633-1645页

作者： O.S.Dahham n.Z.noriman H.Jaya R.Hamzah M.u.umar I.Johari Advanced Polymer Research Faculty of Chemical Engineering TechnologyUniversiti Malaysia Perlis(UniMAP)02600 Pauh Putra CampusPerlisMalaysia School of Housing Building and Planning Universiti Sains MalaysiaMindenPenang11800Malaysia JV Heritage Conservation&Technology Research Group(HEVEG) Penang11800Malaysia School of Civil Engineering Engineering CampusUniversiti Sains MalaysiaNibong TebalPenang14300Malaysia

In this work,Epoxidized natural rubber/sawdust short fiber(EnR-50/SD)composites at different fiber content(5,10,15 and 20 phr)and size(fine size at 60–100μm and coarse size at 10–20 mm)were prepared using two-roll mill and electrical-hydraulic hot press machine *** characteristics,water uptake,tensile,morphological,physical,and thermal properties of the composites were *** indicated that the scorch time and cure time became shorter whereas torque improved as SD content *** the decline of tensile strength and elongation at break values,modulus,hardness and crosslinking density have shown enhancements with the increasing of SD *** water uptake percentage of all samples has shown an increasing as SD content ***,the low SD content,particularly fine size have presented lower water *** temperature of weight%loss(5 and 50 wt%loss)of 5 phr SD(low content)have recorded higher temperature compared to 20 phr SD(high content)in the rubber composites,which indicated higher thermal *** fine size of SD has recorded better overall properties than SD coarse size at same loading in the rubber composites.

关键词： Epoxidized natural rubber sawdust short fiber cure characteristics tensile properties thermal stability

Amberlyst-15 catalyzed synthesis of alkyl/aryl/heterocyclic phosphonates

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Chinese Chemical Letters 2011年第8期22卷 895-898页

作者： u.M.Rao Kunda V.n.Reddy Mudumala C.S.Reddy Gangireddy B.R.nemallapudi K.n.Sandip S.R.Ciran.u. Department of Chemistry Sri Venkateswara UniversityTirupati 517502.India Bio-Organic Division BARCMumbaiIndia

A novel and efficient procedure for the synthesis of alkyl phosphonates through one pot condensation of alkyl halide and trialkyl /aryl phosphite in the presence of Amberlyst-15 as catalyst under solvent free conditions was *** demonstrated several advantages such as good yields of products,simple operation,convenient separation and inexpensive catalyst.

关键词： Dialkyl/aryl alkyl phosphonates Amberlyst-15

Wild Brassica and Its Close Relatives in Turkey,the Genetic Treasures

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Horticultural Plant Journal 2021年第2期7卷 97-107页

作者： Ali A.Donmez Zubeyde ugurlu Aydın Xiaowu Wang Molecular Plant Systematic Laboratory(MOBIS) Department of BiologyFaculty of ScienceHacettepe UniversityAnkara 06800Turkey Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China

Brassica taxa occur naturally and are also cultivated in *** to their economic importance,several cultivars have been extensively cultivated in certain regions of the *** extensive cultivation for vegetable production of the other species of the genus,Brassica juncea has very limited *** native species of Brassica are known from restricted locations in Turkey with only a few *** them,Brassica elongata is distributed all over the Central and Eastern parts of the country and it prefers unfertile soils on *** the current data about the Brassica taxa would lead to new initiatives for Brassica research dealing with both the genetic structure and the origin of the *** characters of the genera closely related to Brassica have been discussed under the relevant ***,an overview for the Turkish Brassiceae tribe,both native and cultivated,has been presented and the relevant identification keys have been supplied for updating.

关键词： Brassica Brassiceae cultivation native Turkey

nucleon Effective Mass in Asymmetric nuclear Matter within Extended Brueckner Approach

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Chinese Physics Letters 2012年第4期29卷 47-50页

作者： GAn Sheng-Xin ZuO Wei u.Lombardo Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 Graduate School of Chinese Academy of Sciences Beijing 100049 Department of Physics and Astrophysics Catania UniversityVia Santa Sofia 64I-95123Italy

The on-shell properties of the nucleon effective mass in asymmetric nuclear matter are investigated in the framework of an extended Brueckner-Hartree-Fock (BHF) *** proton and n.u.ron effective masses in n.u.ron-rich nuclear matter are predicted by including both the effect of ground state correlations and the threebody force (TBF) rearrangement *** this framework,the n.u.ron effective mass is predicted *to be larger than the proton one in n.u.ron-rich nuclear matter,i.e.,m*n ≥ m**** effect of ground state correlations turns out to be dominated at low densities and it leads to a strong enhancement of the effective *** TBF rearrangement contribution becomes predominant over the effect of ground state correlations at high densities and it reduces remarkably the absolute magnitude of the isospin splitting of the n.u.ron and proton effective masses in n.u.ron-rich matter at high densities.

关键词： rearrangement absolute Hartree