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Hydro-mechanical response with respect to the air ventilation for water filtration in homogeneous soil

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Journal of Mountain Science 2019年第11期16卷 2562-2576页

作者： Wei-lin LEE Yih-Chin TAI Chjeng-Lun SHIEH Kuniaki MIYAMOTO yu-feng lin Department of Hydraulic and Ocean Engineering National Cheng-Kung UniversityTainan 701TaiwanChina Graduate School of Life and Environmental Sciences University of TsukubaIbaraki 305-8577Japan

When water penetrates into soil,interstitial air can become trapped by the infiltrating *** the effect of air ventilation could cause deviations in the predicted pore water pressure and the associated effective *** study aims at the effect of air ventilation on the coupled hydro-mechanical responses in homogeneous soil during infiltration.A schematic concept of infiltration conditions(open-and closed-valve)in homogeneous soil is proposed for investigating their impacts on the pore water pressure and effective *** of vertical soil column filled with Ottawa sand(ASTM C77820/30)were designed for two types of air ventilation(namely,open and closed infiltration).The evolution of pore water pressure at the cylinder bottom was recorded,and served as a benchmark problem for evaluating the coupled hydro-mechanical *** with the commercial software,GeoStudio,was employed for the dynamic behaviors of pore-water and-air pressures as well as the evolving effective *** was found in both the experiments and numerical investigations that the infiltration condition plays a crucial role for the ascending rate of pore water pressure as well as the associated effective *** results illustrate the inevitable impacts of the air ventilation conditions on the mechanical properties of the soil during infiltration.

关键词： Water infiltration Air ventilation Schematic concept Soil column experiment Unsaturated soil mechanism GeoStudio

Observation of Resistive Switching Memory by Reducing Device Size in a New Cr/CrO_x/TiO_x/TiN Structure

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Nano-Micro Letters 2015年第4期7卷 392-399页

作者： Debanjan Jana Subhranu Samanta Sourav Roy yu feng lin Siddheswar Maikap Thin Film Nano Tech. Lab. Department of Electronic Engineering Chang Gung University

The resistive switching memory characteristics of 100 randomly measured devices were observed by reducing device size in a Cr/Cr Ox/Ti Ox/Ti N structure for the first *** electron microscope image confirmed a viahole size of 0.4 lm.A 3-nm-thick amorphous Ti Oxwith 4-nm-thick polycrystalline Cr Oxlayer was observed.A small 0.4-lm device shows reversible resistive switching at a current compliance of 300 l A as compared to other larger size devices(1–8 lm)owing to reduction of leakage current through the Ti *** device-to-device uniformity with a yield of[85%has been clarified by weibull distribution owing to higher slope/shape *** switching mechanism is based on oxygen vacancy migration from the Cr Oxlayer and filament formation/rupture in the Ti *** read pulse endurance of[105cycles,good data retention of 6 h,and a program/erase speed of 1 ls pulse width have been obtained.

关键词： CrOx TiOx Resistive switching memory Slope/shape factor Device size

Preparation and Characterization of Carbon Nanotubes-Coated Cordierite for Catalyst Supports

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Journal of Natural Gas Chemistry 2006年第3期15卷 211-216页

作者： Jianmei Wang Rong Wang Xiujin yu Jianxin lin feng Xie Kemei Wei National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou University Fuzhou 350002 China

The carbon nanotubes-coated cordierite （CNTs-cordierite） was fabricated by pyrolysis of ethine on cordierite with iron catalyst, which was penetrated into the cordierite substrate by vacuum impregnation. The cordierite substrate, carbon naontubes, and CNTs-cordierite were characterized by SEM, TEM/HREM, BET, and TGA. The results show that the carbon nanotubes were distributed uniformly on the surface of cordierite. A significant increase in BET surface area and pore volume was observed, and a suitable pore-size distribution was obtained. On the CNTs-cordierite, carbon nanotubes penetrated into the cordierite substrate, which led to a remarkable stability of the CNTs against ultrasound maltreatment. Growth time is an important factor for thermostability and texture of the sample. The mass increased but the purity decreased with the growth time, which caused the exothermic peak shift to low temperature, and the corresponding full width half maximum （FWHM） of the peak in DTG increased.

关键词： carbon nanotube cordierite pyrolysis ethine catalyst support

Assessment of damage to buildings and farms during the 2011 M 9.0 earthquake and tsunami in Japan from remote sensing data

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Chinese Science Bulletin 2011年第20期56卷 2138-2144页

作者： GUO HuaDong CHEN yu feng Qiang lin QiZhong WANG Fei Center for Earth Observation and Digital Earth Chinese Academy of SciencesBeijing 100094China

At 13:46 on March 11,2011(Beijing time),a great earthquake of magnitude of 9.0 occurred off the Pacific coast of northeastern Japan(Tohoku Region).After the earthquake,the Center for Earth Observation and Digital Earth(CEODE),Chinese Academy of Sciences,quickly launched a major disaster emergency response to assess the *** this paper,we have extracted buildings and farms in the heavily devastated area that includes Iwate,Miyagi,and Fukushima Prefectures,based on multi-spectral remote sensing *** have assessed building damage by overlaying seismic intensity and building *** addition,we have assessed the extent of building and farm damage caused by the tsunami through the establishment of a tsunami impact assessment model that is based on terrain and distance from the *** results were partially verified by high-resolution images obtained after the *** results show that about 76% of buildings in Miyagi Prefecture were affected by seismic intensity 6 and above,with 24% of the buildings and 12% of the farms destroyed by the *** huge losses were echoes at lesser amounts in Fukushima and *** results provide the support of basic data,which can be further developed by economic and social aspects of the disaster assessment.

关键词：影响评估模型遥感数据建筑物大地震海啸农场数据损坏日本

New triterpenoid sapoin from Ardisia gigantifolia Stapf.

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Chinese Chemical Letters 2010年第4期21卷 449-452页

作者： Gong, Qiang Qiang Mu, Li Hua Liu, Ping Yang, Shi lin Wang, Bo feng, yu lin Gen Hosp PLA Dept Clin Pharmacol Beijing 100853 Peoples R China JiangXi Univ Tradit Chinese Med Nanchang 330006 Peoples R China

One new triterpenoid sapoin with two known triterpenoid sapoins:3β-O-{α-L-rhamnopyranosyl-(1→3)-[β-D-xylopyranose-(1→2)]-β-D-glucopyranosyl-(1→4)-α-L-arabinopyranosyl}-3β-hydroxy-13β,28-epoxy-oleanan-16-oxo-30-al(1),3β-O-{α-L-rhamnopyranosyl-(1→3)-[(β-D-xylopyranosyl-(1→2)]-β-D-galactopyranosyl-(1→4)-[(β-D-glucopyranosyl-(1→2)]-α-L-ara-binopyranoside}-16α-hydroxy-13,28-epoxy-oleanane(2) and cyclamiretin A 3β-O-α-L-rhamnopyranosyl-(l→3)-[P-D-xylopyranosyl-(1→2)]-β-D-glucopyranosyl-(1→4)-[β-D-glucopyranosyl-(...

关键词： Ardisia gigantifolia Stapf. Myrsinaceae Triterpenoid sapoin

A new sulfated triterpenoid from the bark of Zygophyllum fabago L.

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Chinese Chemical Letters 2010年第9期21卷 1100-1102页

作者： yu lin feng Bin Xie He Ran Li Qiong Ming Xu Xiao Juan Zhang yue Sheng Wang Shi lin Yang National Pharmaceutical Engineering Centre for Solid Preparation in Chinese Herbal Medicine Nanchang 330006 China Jiangxi University of Traditional Chinese Medicine Nanchang 330006 China College of Pharmacy. Soochow University. Suzhou 215123. China

A new sulfated triterpenoid,3β,24-dihydroxyurs-20-ene-24-O-sulphonyl-28-oic acid（fabagoin.1） was isolated from the barks of Zygophyllum fabago *** structure was elucidated on the basis of spectroscopic data.

关键词： Zygophyllum fabago L. Sulfated triterpenoid Fabagoin

Synthesis, Purification and Characterization of Amphiphilic and Microphase Separated Graft Copolymer Polystyrene-g-Poly(ethylene oxide)

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Chemical Research in Chinese Universities 1992年第3期8卷 278-286页

作者： QIU Yong-xing, yu Xiao-jie, feng lin-xian and YANG Shi-lin (Department of Polymer Science and Engineering, ZheJiang University, Hangzhou)

The present paper covers the poly (ethylene oxide) macromer with vinyl benzyl terminal group (PEO-VB) prepared by deactivation of the alkoxide function of mono-functional 'living' PEO chains with vinyl benzyl chloride (VBC). The obtained macromers were subjected to careful purification and detailed characterization. A new kind of amphiphilic polystyrene-g-poly(ethylene oxide) (PS-g-PEO) with both mi-crophase separated and PEO side chains was synthesized from radical copolymerization of PEO-VB macromer with styrene monomer. An improved purification method, referred as 'selective dissolvation', was established for the isolation of graft copolymers from the grafting products, and the purity and yield of the purified copolymers were satisfactory. The well-defined structure of the purified copolymers was confirmed by IR, 1H NMR and GPC. The bulk composition of the graft copolymers was determined by a well-established first derivative UV spectrometry. Various experimental parameters controlling the copolymerization were also studied. The results indicate that the feed ratio of macromer to styrene (M/S) was the most important factor in determining the composition of the copolymers. Thus a series of PS-g-PEO with a wide range of bulk compositions were obtained simply by adjusting the value of M/S. As clearly indicated by transmission electron microscopy, this amphiphilic graft copolymers may readily form microphase separated structures.

关键词： Poly(ethyiene oxide) macromer Polystyrene-g-poly(ethylene oxide) Pu-rification of graft copolymer Amphiphilic and microphase separated structure Biocom-patible polymer

Initial computed tomography findings of invasive pulmonary aspergillosis in non-hematological patients

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Chinese Medical Journal 2012年第17期125卷 2979-2985页

作者： XU Si-cheng QIU Li-hua LIU Wen-ya feng yu-lin Intensive Care Unit Radiology Center First Affiliated Hospital Xinjiang Medical University Urumqi Xinjiang 830054 China CT Unit Radiology Center First Affiliated Hospital Xinjiang Medical University Urumqi Xinjiang 830054 China Huaxi MR Research Center (HMRRC) Department of Radiology Huaxi MR Research Center (HMRRC) Department of Radiology Department of Respiratory Medicine West China Hospital Sichuan University Chengdu Sichuan 610041 China

Background The computed tomography （CT） findings of invasive pulmonary aspergillosis （IPA） are unclear in non- hematological patients. The present study was a retrospective evaluation of CT images in non-hematological patients with IPA. Methods All adult patients who met the 2008 European Organization for Research and Treatment of Cancer/Mycoses Study Group （EORTC/MSG） criteria for proven or probable IPA were included during a 5-year study at our institutions. Initial CT findings in our cohort were retrospectively reviewed by two independent thoracic radiologists blinded to patient demographics and clinical outcomes. The presence, pattern, and distribution of abnormalities were recorded. Results Twenty-three non-hematological patients with pathologically confirmed IPA were included in our study. Areas of ground-glass opacities were present in 14 patients （61%）, which were bilateral in 10 patients and unilateral in four. This pattern mainly involved the middle and upper lung zones. Air-space consolidation was identified in 12 patients （52%）, and the areas were distributed along the bronchus or subpleura in most cases. Other findings, including five small nodules （22%）, three macronodules （13%）, and one halo sign （4%）, were less common. Conclusions CT findings of IPA in non-hematological patients frequently manifested as acute bronchopneumonia, and ground-glass opacities and air-space consolidations were the most common CT findings of IPA in these patients.

关键词： invasive pulmonary aspergillosis fungal lung disease immunosuppression computed tomography scan

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ADAM33 in asthma

Acta Pharmacologica Sinica 2003年第12期 162-163页

作者： SU Zhi-Guang, WEN Fu-Qiang, feng yu-lin Lab of Pulmonary Medicine, West China Hospital, Sichuan University, Chengdu 610041. China

Asthma is characterized by variable airway obstruction. airway hyperresponsiveness, and airway inflammation and remodeling. It is the most common chronic disease of childhood, affecting an estimated 155 million individuals in the world, and the global market for asthma medication is worth $5.5 billion per annum. Studies of the epidemiology and heritability of allergy

关键词： ADAM33 in asthma as in gene