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Journal of Integrative Agriculture 2014年第1期13卷 134-139页

作者： HE Yu-yong MA pen LIU Xiao-lan WANG Ren-hua LU Wei College of Animal Science and Technology Jiangxi Agricultural University

An experiment was conducted to investigate the effect of different initial pH on the storage characteristics and shelf life of liquid diet. 45 polypropylene bags were allotted to treatments 1, 2 and 3 on average, 100 g diet and 200 g water were placed into each polypropylene bag, food-grade DL-lactic acid was added to each bag at a rate of 0.0 mL in treatment l, 1.2 mL in treatment 2 and 4.7 mL in treatment 3, air was artificially expelled from each bag prior to heat-sealing. All bags were placed into a cage, cooked with steam at 90~C for 30 rain under normal pressure, then taken out and stored from day 0 to 60 at room temperature. Results indicated that liquid diet in treatment 3 achieved the highest total sensory scores, the pH value had a tendency to decrease and the bacteria count had a tendency to increase in the liquid diet with the advancing of storage time with the advancing of storage time, lowering the initial pH of liquid diet decreased the bacteria count, the AFBl and ZEN concentrations and increased the starch gelatinization degree from day 30 to 60, liquid diet in treatment 3 had a lower （P〈0.01） bacteria count and a higher （P〈0.05） starch gelatinization degree at day 30 and 45 than liquid diet in treatment 1. In conclusion, lowering the initial pH of liquid diet with lactic acid to pH 4 could effectively improve the storage characteristics and shelf life of liquid diet.

关键词： initial pH storage characteristics shelf life liquid diet lactic acid

Full-field mapping of internal strain distribution in red sandstone specimen under compression using digital volumetric speckle photography and X-ray computed tomography

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Journal of Rock Mechanics and Geotechnical Engineering 2015年第2期7卷 136-146页

作者： Lingtao Mao Jianping Zuo Zexun Yuan Fu-pen Chiang State Key Laboratory of Coal Resources and Safe Mining China University of Mining & Technology (Beijing) Laboratory for Experimental Mechanics Research Stony Brook University Department of Mechanical Engineering Stony Brook University

It is always desirable to know the interior deformation pattern when a rock is subjected to mechanicalload. Few experimental techniques exist that can represent full-field three-dimensional （3D） straindistribution inside a rock specimen. And yet it is crucial that this information is available for fully understandingthe failure mechanism of rocks or other geomaterials. In this study, by using the newlydeveloped digital volumetric speckle photography （DVSP） technique in conjunction with X-ray computedtomography （CT） and taking advantage of natural 3D speckles formed inside the rock due to materialimpurities and voids, we can probe the interior of a rock to map its deformation pattern under load andshed light on its failure mechanism. We apply this technique to the analysis of a red sandstone specimenunder increasing uniaxial compressive load applied incrementally. The full-field 3D displacement fieldsare obtained in the specimen as a function of the load, from which both the volumetric and the deviatoricstrain fields are calculated. Strain localization zones which lead to the eventual failure of the rock areidentified. The results indicate that both shear and tension are contributing factors to the failuremechanism. 2015 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting byElsevier B.V. All rights reserved.

关键词： Red sandstone Strain localization Uniaxial compression Digital volumetric speckle photography(DVSP) X-ray micro-tomography

Contrast enhanced ultrasound in diagnosing liver lesion that spontaneously disappeared:A case report

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World Journal of Clinical Cases 2021年第21期9卷 5948-5954页

作者： Zong-Ding Wang Salameen Haitham Jian-Ping Gong Zi-Li pen Department of Surgery Fengjie People’s HospitalChongqing 400010China Department of Hepatobiliary Surgery The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China

BACKGRoUND Focal liver lesions(FLLs)are abnormal masses that are distinguishable from the surrounding liver parenchyma,solid or cystic and may be benign or *** are usually detected incidentally on abdominal *** classification of FLLs is very important as it directly determines the diagnosis and treatment of *** SUMMARY A 46-year-old male patient was admitted into the hospital with tarry stool,during the investigation of this issue an incidental FLL was *** further investigation of this“incidentaloma”computerized tomography and magnetic resonance imaging reached contradictory *** lesion was then further investigated using contrast-enhanced ultrasound(CEUS)with an initial diagnosis of idiopathic FLL was acquired and observation of the FLL over time need for final diagnosis,however in the follow up the FLL disappeared *** CEUSs value for characterization of FLLs is undeniable,especially when other methods produce inconsistent results,is undeniable but with its *** and how the FLL disappeared is not known,and can be only hypothesized it was a pseudolesion.

关键词： Liver Ultrasonography Tomography Contrast enhanced ultrasound Focal liver lesions Case report

基于CT的数字体散斑法测量物体内部三维变形场

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光学学报 2015年第3期35卷 111-120页

作者：毛灵涛 Fu-pen Chiang 袁则循中国矿业大学煤炭资源与安全开采国家重点实验室北京100083 纽约州立大学石溪分校机械系纽约117942300 中国矿业大学力学与建筑工程学院北京100083

提出了用于测量物体内部三维变形场的数字体散斑(DVSP)法。利用计算机断层扫描(CT)、磁共振成像(MRI)、激光扫描共焦显微镜(LSCM)或光学相干断层成像术(oCT)获取具有散斑特征的物体变形前后的三维立体图像,将其分别分割成若干具有相同... 详细信息

提出了用于测量物体内部三维变形场的数字体散斑(DVSP)法。利用计算机断层扫描(CT)、磁共振成像(MRI)、激光扫描共焦显微镜(LSCM)或光学相干断层成像术(oCT)获取具有散斑特征的物体变形前后的三维立体图像,将其分别分割成若干具有相同尺寸的子块体,对相对应的子块体进行第一步三维快速傅里叶变换,在频谱域进行数值干涉得到合成谱,对合成谱进行第二步三维快速傅里叶变换,得到含位移信息的扩展脉冲函数,通过求取峰值位置得到子块体的位移矢量,对所有变形前后相对应的子块体逐一进行上述两步三维快速傅里叶变换,就可以求出所有子块体的位移矢量,从而获得物体内部三维变形场。利用模拟生成的三维散斑体图像,通过数字实验,分析了散斑尺寸、数目、子块体尺寸、图像对比度和亮度对DVSP法精度与准确性的影响。利用DVSP法测量了红砂岩单轴压缩内部的三维应变场,由位移场及应变场分布可直观地揭示试件内部变形特征。

关键词：测量数字体散斑二步三维快速傅里叶变换三维变形场工业计算机断层扫描

Specifying Requirements of Real-Time System with Rules and Templates

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Wuhan University Journal of Natural Sciences 2000年第3期5卷 278-284页

作者： Wu Guo-qing Xiao Hai-feng Zheng pen Ying Shi State Key Lab of Computer Software Engineering Wuhan University Wuhan 430072 China

This paper presents a model specifying requirements of real-time systems. Different from existing researches, this model mainly uses rules and templates to represent hierarchical FSMs (Finite State Machine). In this model, one rule corresponds to one state transition of FSM and one template corresponds to one FSM. Rules and information with respect to a FSM can be written in a template. So templates include not only state diagrams, but also information that can not be described by FSM, such as performance requirements. The specification using this model consists of a collection of templates and it is easy for users to understand and to review. After introduced the related researches and principles of the model, this paper specifies requirements of a real-time system with this model, and discusses characters of this model in the end.

关键词： requirements specification model requirements specification real-time system finite state machine

Enhancement of the polynomial functions response surface model for real-time analyzing ozone sensitivity

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Frontiers of Environmental Science & Engineering 2021年第2期15卷 155-168页

作者： Jiangbo Jin Yun Zhu Jicheng Jang Shuxiao Wang Jia Xing pen-Chi Chiang Shaojia Fan Shicheng Long Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China Southern Marine Science and Engineering Guangdong Laboratory Sun Yat-Sen UniversityZhuhai 519000China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Graduate Institute of Environmental Engineering Taiwan UniversityTaipei 10673China Carbon Cycle Research Center Taiwan UniversityTaipei 10672China

Quantification of the nonlinearities between ambient ozone(o3)and the emissions of nitrogen oxides(Nox)and volatile organic compound(VoC)is a prerequisite for an effective o3 control *** Enhanced polynomial functions Response Surface Model(Epf-RSM)with the capability to analyze o3-Nox-VoC sensitivities in real time was developed by integrating the hill-climbing adaptive method into the optimized Extended Response Surface Model(ERSM)*** Epf-RSM could single out the best suited polynomial function for each grid cell to quantify the responses of o3 concentrations to precursor emission *** comparisons between Epf-RSM and pf-ERSM(polynomial functions based ERSM)were performed using out-of-sample validation,together with comparisons of the spatial distribution and the Empirical Kinetic Modeling Approach *** comparison results showed that Epf-RSM effectively addressed the drawbacks of pf-ERSM with respect to overfitting in the margin areas and high biases in the transition *** o3 concentrations predicted by Epf-RSM agreed well with Community Multi-scale Air Quality simulation *** case study results in the Pearl River Delta and the north-western area of the Shandong province indicated that the o3 formations in the central areas of both the regions were more sensitive to anthropogenic VoC in January,April,and october,while more Nox-sensitive in July.

关键词： Response surface model Hill-climbing algorithm ozone pollution Precursor emissions Control strategy

The short form of the SUR1 and its functional implications in the damaged brain

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Neural Regeneration Research 2022年第3期17卷 488-496页

作者： Iván Alquisiras-Burgos Javier Franco-Pérez Moisés Rubio-osornio penélope Aguilera Laboratorio de Patología Vascular Cerebral Instituto Nacional de Neurología y Neurocirugía“Manuel Velasco Suárez”CDMXMexico Laboratorio de Formación Reticular Instituto Nacional de Neurología y Neurocirugía“Manuel Velasco Suárez”CDMXMexico Laboratorio Experimental de Enfermedades Neurodegenerativas Instituto Nacional de Neurología y Neurocirugía“Manuel Velasco Suárez”CDMXMexico.

Sulfonylurea receptor(SUR) belongs to the adenosine 5′-triphosphate(ATP)-binding cassette(ABC) transporter family;however,SUR is associated with ion channels and acts as a regulatory subunit determining the opening or closing of the ***8 and Abcc9 genes code for the proteins SUR1 and SUR2,*** SUR1 transcript encodes a protein of 1582 amino acids with a mass around 140–177 k Da expressed in the pancreas,brain,heart,and other *** is well known that SUR1 assembles with Kir6.2 and TRPM4 to establish K_(ATP) channels and non-selective cation channels,***8 and 9 are alternatively spliced,and the resulting transcripts encode different isoforms of SUR1 and SUR2,which have been detected by different experimental ***,the use of binding assays to sulfonylureas and Western blotting has allowed the detection of shorter forms of SUR(-65 k Da).Identity of the SUR1 variants has not been clarified,and some authors have suggested that the shorter forms are ***,immunoprecipitation assays have shown that SUR2 short forms are part of a functional channel even coexisting with the typical forms of the receptor in the *** evidence confirms that the structure of the short forms of the SURs is fully functional and does not lose the ability to interact with the *** structural changes in short forms of SUR modify its affinity to ATP,regulation of its expression might represent an advantage in pathologies where ATP concentrations decrease and a therapeutic target to induce ***,the expression of SUR1 variants might be induced by conditions associated to the decrease of energetic substrates in the brain(*** stroke and epilepsy).In this review,we want to contribute to the knowledge of SUR1 complexity by analyzing evidence that shows the existence of short SUR1 variants and its possible implications in brain function.

关键词： brain edema epilepsy Parkinson's disease stroke sulfonylurea receptor 1 SUR1 traumatic brain injury TRPM4

Blind search for 21-cm absorption systems using a new generation of Chinese radio telescopes

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Research in Astronomy and Astrophysics 2017年第6期17卷 1-4页

作者： Hao-Ran Yu Ue-Li pen Tong-Jie Zhang Di Li Xuelei Chen Kavli Institute for Astronomy & Astrophysics Peking University Beijing 100871 China Canadian Institute for Theoretical Astrophysics University of Toronto Toronto M5S 3H8 ON Canada Dunlap Institute for Astronomy and Astrophysics University of Toronto Toronto M5S 3H4 ON Canada Canadian Institute for Advanced Research Program in Cosmology and Gravitation Toronto ON M5G 1Z8 Canada Perimeter Institute for Theoretical Physics Waterloo ON N2L 2Y5 Canada Department of Astronomy Beijing Normal University Beijing 100875 China National Astronomical observatories Chinese Academy of Sciences Beijing 100012 China Key Laboratory of Radio Astronomy Chinese Academy of Sciences Nanjing 210008 China Key Laboratory for Computational Astrophysics National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China

Neutral hydrogen clouds are known to exist in the Universe, however their spatial distributions and physical properties are poorly understood. Such missing information can be studied by the new generation of Chinese radio telescopes through a blind search of 21-cm absorption systems. We forecast the capabilities of surveys of 21-cm absorption systems by two representative radio telescopes in China - the Five-hundred-meter Aperture Spherical radio Telescope （FAST） and Tianlai 21-cm cosmology experiment （Tianlai）. Facilitated by either the high sensitivity （FAST） or wide field of view （Tianlai） of these telescopes, more than a thousand 21-cm absorption systems can be discovered in a few years, representing orders of magnitude improvement over the cumulative discoveries in the past half a century.

关键词： telescopes - surveys - cosmology observations

Effects of Land Use on Heavy Metal Accumulation in Soils and Sources Analysis

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Agricultural Sciences in China 2010年第11期9卷 1650-1658页

作者： BAI Ling-yu ZENG Xi-bai LI Lian-fang pen Chang LI Shu-hui Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment and Climate Change Ministry of Agriculture Beijing 100081 P.R.China Center of Research for Environment ＆ Resource Jilin Academy of Agricultural Sciences Changchun 136100 P.R.China

Heavy metal accumulation and its influential factors were studied in the different land use soils, which would provide a theoretical basis for controlling the content of heavy metals in soils. To identify the effects of land use on the accumulation of heavy metals in soils, 148 soil samples were collected from four land use patterns including greenhouse field, uncovered vegetable field, maize field, and forest field in Siping area of Jilin Province, China, and Cr, Ni, Cu, As, Cd, Pb, and Zn contents of those samples were determined with ICP and ICP-Mass. The result showed that there was a rather large difference in effects of the accumulation of Cr, Ni, Cu, As, Cd, and Zn in soils under different land use patterns, except Pb. Based on the assessment which compared with background concentrations in soil, the higher accumulation of heavy metals was found in greenhouse and uncovered vegetable field, much less in maize field and forest field. The mean contents of heavy metals in soils from high to low were arranged in order of greenhouse field, uncovered vegetable field, maize field, and forest field. Cd and Cu had relatively serious accumulation in soils compared to Cr, Ni, As, and Zn. The mean content of Cd in greenhouse field was 0.467 mg kg-x,which exceeded the grade II of the Chinese Soil Quality Criterion GB15618-1995 （6.5 〈pH〈7.5） for Cd standard of 0.3 mg kg^-1, while it was 5.2 times of Cd standard in the forest fields. The mean contents ofCr, Ni, Cu, As, Pb, and Zn in soils under four land use patterns were lower than the grade II of the Chinese Soil Quality Criterion. Compared with the soil cultivated years, the agricultural chemical compounds and manures application, especially the quality and quantity of applied fertilizer was one of the main reasons for leading to different accumulation of heavy metals in soils under the studied land use patterns. The accumulation of heavy metals, such as Cr, Ni, Cu, As, Cd, and Zn in soils was significantly affected by la

关键词： soil land use pattern heavy metal accumulation

Carbonate dissolution and deep-water paleoceanography of the South China Sea since the Middle Pleistocene

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Chinese Science Bulletin 2001年第22期46卷 1908-1912页

作者： LI Baohua ZHAo Quanhong CHEN Min-pen JIAN Zhinmin WANG Pinxian Nanjing Institute of Geology and Paleontology Chinese Academy of SciencesNanjing 210008China Laboratory of Marine Geology Tongji UniversityShanghai 200092China Institute of oceanography Taiwan UniversityTaipei 10617TaiwanChina

Based on the data of oxygen isotope, micro-paleontology and paleomagnetism, we set up the detailed chronology of Core 17957-2 from the southern South China Sea and discuss the change of carbonate dissolution over the last 800 ka. Down-core variation of carbonate content records the 'Pacific-type' cycle of higher glacial values and lower interglacial values, though the core lies above the modern lysocline. Carbonate dissolution indices indicate that several severe dissolution of CaCo3 happened during the transition from interglacial to glacial stages. Spectral analyses of these indices show that the carbonate dissolution periodicities are mainly made up of 500 ka and 100 ka. Compared with the cycles of carbonate dissolution of the Indian ocean, the long-term (500-ka) periodicity reflects the characteristic of the deep-water circulation of the oceans.

关键词： Pleistocene South China Sea carbonate dissolution deep-water paleoceanography.