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乙炔前驱体对含银的类金刚石碳薄膜结构和抗菌性能的影响

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生物医学工程研究 2024年第1期43卷 76-80页

作者：付涛林小雯李欣培 Hasan mb 西安博恩生物科技有限公司西安710077 西安交通大学生命科学与技术学院生物医学信息工程教育部重点实验室西安710049

本研究在磁控溅射镀膜气氛中添加乙炔,制备了含银的氢化类金刚石碳(DLC-Ag)薄膜,以抑制薄膜表面银析出。通过扫描电镜、电子能谱、色差和显微硬度测量、琼脂平板计数抗菌实验,考察其对膜层抗菌性能的影响。结果表明,乙炔流量升高时,薄... 详细信息

本研究在磁控溅射镀膜气氛中添加乙炔,制备了含银的氢化类金刚石碳(DLC-Ag)薄膜,以抑制薄膜表面银析出。通过扫描电镜、电子能谱、色差和显微硬度测量、琼脂平板计数抗菌实验,考察其对膜层抗菌性能的影响。结果表明,乙炔流量升高时,薄膜表面的银析出减少,黑度增加,硬度降低;银含量最低的试样(0.8 at%)也对大肠杆菌表现出良好的抗菌性能。

关键词：类金刚石碳银磁控溅射薄膜抗菌

Impacts of ozone on the biomass and yield of rice in open top chambers

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Journal of Environmental Sciences 2001年第2期13卷 233-236页

作者： Jin, mb Feng, ZW Zhang, FZ Chinese Acad Sci Ecoenvironm Sci Res Ctr Beijing 10085 Peoples R China

The impacts of different 03 concentration on the biomass and yield of rice were studied by using OTC-1 open-top chambers. Experimental treatments included the activated charcoal-filtered air. (CFA), 50 nl/L (CF50), 100 nl/L ( CF100) and 200 nl/L (CF200) concentrations of O-3. The O-3 treatments significantly decreased the total biomass per plant. The. elevated O-3 exposure resulted in a more decrease in the root growth than in the shoot growth. Assessments of yield characteristics at the final harvest revealed an O-3-induced decrease in the number of grains per plant, resulting from fewer ears per plant, fewer grains per ear and more unfilled grains per ear. The 1000 grain dry weight and the harvest index (HI) were not changed significantly under 50 nl/L or 100 nl/L O-3 exposure, but reduced by 17.0% and 4.8% by 200nl/L O-3 treatment, respectively. Compared to the CFA treatment, CF50, CF100 and CF200 treatments caused a 8.2%, 26.1%, 49.1% decrease of the grain yield per plant, and a 14.2%, 31.7%, 51.7% decrease of the total biomass per plant, respectively. Linear regression showed that the 7h - daily mean O-3 concentration exposure for 3 months ( July-September) and AOT40 ( cunulative exposure accumulation over threshold 40 nl/L) were well correlated with the relative grain yield. A yield loss of 10% was estimated to be at 46.9 nl/L O-3 for 7h-daily mean O-3 concentration exposure or at 12930nl/(L(.)h) O-3 for AOT40.

关键词： open-top chambers ozone rice biomass yield

SEMI－EMPIRICAL　QUANTUM　CHEMISTRY　STUDY　ON　ELECTROCHEMICAL　REDUCTION　OF　DIMETHYLGLYOXIMATONICKEL

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Chinese Chemical Letters 1996年第7期7卷 643-646页

作者： Chen, mb Gao, K Ni, YM CHINESE ACAD SCI INST ORGAN CHEMSHANGHAI 200032PEOPLES R CHINA TONGJI UNIV DEPT CHEMSHANGHAI 200092PEOPLES R CHINA

The mechanism of the electrochemical reduction of the nickel(Ⅱ) complex dimethylglyoxime and ammonia is studied by means of INDO,energy localization and electrostatic potential methods.

关键词： SEMI EMPIRICAL DIMETHYLGLYOXIMATONICKEL CHEMISTRY

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

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Chinese Physics B 2023年第12期32卷 325-331页

作者： Jimmi HervéTalla mbé Ulrich Chancelin Tiofack Demanou Christian Kenfack-Sadem Martin Tchoffo Research Unit of Condensed Matter Electronics and Signal ProcessingDepartment of PhysicsUniversity of DschangP.O.Box 67DschangCameroon African Institute for Mathematical Sciences P.O.Box 608LimbeCameroon

We theoretically study the effect of the quadratic coupling strength on optomechanical systems subjected to a continuous external force. Quadratic coupling strength originates from strong coupling between the optical and the mechanical degrees of freedom. We show that the quadratic coupling strength reduces the amplitude of the dispersion spectra at the resonance in both blue-and red-sideband regimes. However, it increases(decreases) the amplitude of the absorption spectrum in the blue-(red-)sideband regime. Furthermore, in both sideband regimes, the effective detuning between the pump and the cavity deviates with the quadratic coupling strength. Thereby, appropriate selection of the quadratic coupling strength results in an important magnification(in absolute value) of the group delay for both slow and fast light exiting from the optomechanical cavity.

关键词： slow and fast light optomechanical systems group delay quadratic coupling

Conformational Analysis of Two Diosgenyl Saponins

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Chinese Chemical Letters 1997年第9期8卷 785-788页

作者： Liu, MZ Li, C Yu, B Cheng, mb Feng, CL Hui, YZ CHINESE ACAD SCI SHANGHAI INST ORGAN CHEMSTATE KEY LAB BIOORGAN & NAT PROD CHEMSHANGHAI 200032PEOPLES R CHINA

Diosgenyl alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (1) and Diosgenyl alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranoside (2) were shown to be fascinating ''facial amphiphi... 详细信息

关键词： DYNAMICS CALCULATIONS MOLECULAR-DYNAMICS NMR GLYCOSIDES

Mansonella ozzardi parasitic infestation in the orbit

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International Journal of Ophthalmology(English edition) 2017年第10期10卷 1630-1632页

作者： Princeton Lee Aruna Dharmasena Katherine mb Ajdukiewicz Sajid Ataullah Department of Oculoplastic Lacrimal and Orbital SurgeryManchester Royal Eye Hospital Department of Infectious Disease & Tropical Medicine North Manchester General Hospital

Mansonella ozzardi, one of many filarial nematodes exclusively found in parts of Latin America, is one of two Mansonella sp which cause mansonelliasis, an infestation first described by Sir Patrick Manson, the founder... 详细信息

关键词： BRAZILIAN AMAZON ONCHOCERCA-VOLVULUS PERIPHERAL-BLOOD SKIN BIOPSIES IVERMECTIN MICROFILARIAE INFECTION PCR NEMATODA VECTORS

Thermo-Mechanical Properties Study of Stabilized Soil Bricks to Sugar Cane Molasses and Cassava Starch Binders

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Open Journal of Applied Sciences 2023年第2期13卷 240-260页

作者： Narcisse Malanda Jean Albin Nkaya Gilbert Ganga Ngambara Emamou Nondel Durvy Paul Louzolo-Kimbémbé Polytechnic National Superior School (ENSP) Marien Ngouabi University Brazzaville Republic of the Congo Superior Normal School (ENS) Marien Ngouabi University Brazzaville Republic of the Congo National Institute for Research in Engineering Sciences Innovation and Technology (INRSIIT) Brazzaville Republic of the Congo

The current study deals Swith thermo-mechanical properties of stabilized soil small bricks with the help of organic binders of sugar cane molasses and cassava starch. Different formulations of soil concrete have been suggested after the geotechnical characterization of samples of soil was taken. From these, it arises that the studied soil is the most plastically clay (of type A3) according to GTR classification. Samples made of small bricks and measured out at 4%, 6% and 8% of binders (molasses, starch or molasses + starch) have been warmed up to different temperatures (100°C, 150°C, 200°C and 250°C) for the rising of the thermic behavior under different conditions and submitted to crushing testings for the estimation of characteristic resistances to the compression. According to the mechanical behavior, we note an improvement of resistances for small bricks measured 4%, 6% and 8%, of molasses respectively of 32.44%, 32.06% and 23.43% against the value of reference for small bricks without molasses. In the same way, the binder (molasses + starch) also reveals an improvement of resistance to the compression of 13.27%, 26.17% and 26.17%. On the contrary, the stabilization with the starch binder did not bring a significative improvement. According to the thermic influence, the heating at 100°C of stabilized small bricks at 4%, 6% and 8% of molasses, reveals a significative improvement of resistances. Moreover, the stabilization with the starch reveals on the contrary a good behavior for heatings at 150°C and 250°C. In short, for the binder (molasses + starch), it is the heating at 200°C that shows some improvements of remarkable resistances. Different analyses of realized statistics also show the effectivity of obtained results. For all realized formulations, the measuring out at 6% of binders (molasses, or molasses + starch) seems as optimal in front of the best thermo-mechanical revealed properties.

关键词： Clay Molasses Cassava Starch Heating Compressed Soil Brick Mechanical Resistance

Molecular biology of Barrett's esophagus and esophageal cancer:role of p53

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World Journal of Gastroenterology 1998年第4期4卷 5-7页

作者： Alan G. Casson, mb ChB MSc FRCSC FACS

ＭｏｌｅｃｕｌａｒｂｉｏｌｏｇｙｏｆＢａｒｅｔ′ｓｅｓｏｐｈａｇｕｓａｎｄｅｓｏｐｈａｇｅａｌｃａｎｃｅｒ：ｒｏｌｅｏｆｐ５３ＡｌａｎＧ．Ｃａｓｓｏｎ，ＭＢＣｈＢＭＳｃＦＲＣＳＣＦＡＣＳＳｕｂｊｅｃｔｈｅａｄｉｎｇｓ... 详细信息

ＭｏｌｅｃｕｌａｒｂｉｏｌｏｇｙｏｆＢａｒｅｔ′ｓｅｓｏｐｈａｇｕｓａｎｄｅｓｏｐｈａｇｅａｌｃａｎｃｅｒ：ｒｏｌｅｏｆｐ５３ＡｌａｎＧ．Ｃａｓｓｏｎ，ＭＢＣｈＢＭＳｃＦＲＣＳＣＦＡＣＳＳｕｂｊｅｃｔｈｅａｄｉｎｇｓｅｓｏｐｈａｇｅａｌｎｅｏｐｌａｓ...

关键词： esophageal neoplasms/epidemiology adenocarcinoma Barrett’s esophagus p53 gene

Seasonal nutrient distribution in the Rupsha-Passur tidal river system of the Sundarbans mangrove forest,Bangladesh

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Ecological Processes 2014年第1期3卷 125-135页

作者： Shak mb Rahaman Sudhin K Biswas Md S Rahaman Alokesh K Ghosh Lipton Sarder SMS Siraj Sheikh S Islam Fisheries and Marine Resource Technology Discipline Khulna UniversityKhulna 9208Bangladesh Chemistry Department Comilla UniversityComilla 3500Bangladesh

Introduction:The Rupsha-Passur River System(RS)is one of the biggest and important river systems in the Sundarbans estuarine *** is the largest fresh water supplier into this mangrove forest.A comprehensive study was undertaken to evaluate the tidal and seasonal variations in nutrient concentrations(nitrate,phosphate,sulphate and ammonia)of the RS during October,2010(Post monsoon),February,2011(Dry winter)and August 2011(Monsoon).In-situ measurement and laboratory analysis were conducted to measure nutrients and other physico-chemical parameters at discrete water layers of five study points under different tidal ***:Following post monsoon,NH3–N concentration showed seasonal variation with increasing trend(0.0703 to 0.0803 mg/L)in dry winter and then significant dropping(0.013 to 0.019 mg/L)in monsoon *** field observation,no significant tidal variation in ammonia concentration was identified among the study *** monsoon and winter time observation recorded lower SO4 content(7.301 to 37.508 mg/L)at all the sampling stations while in monsoon period,most of the stations showed higher concentration up to 126.92 mg/*** to post monsoon season with comparatively higher PO4–P value(0.314 to 1.347 mg/L),winter and monsoon period sampling indicated low phosphate concentrations(0.045 to 0.5 mg/L)in the Rupsha-Passur *** of the study sites showed considerable tidal changes in phosphate value during post monsoon and monsoon season while only two stations went through tidal fluctuation in sulphate content during monsoon *** of NO3–N were found to fluctuate between 0.083 and 1.233 mg/L with no distinct seasonal distribution *** variation of NO3–N in the experimental sites was not so prominent during post monsoon period as of winter ***:Present study will serve as a basis for future hydrological and environmental studies in the world’s largest Sundarbans intertidal mangrove *** results i

关键词： Water quality Monsoon Aquatic Ecosystem Hydrodynamic environment Post monsoon