检索结果-南通市图书馆

新闻界 2008年第4期 64-66页

作者：程德安西南政法大学新闻传播学院重庆401120

在产品缺陷的报道中往往涉及专业知识,对记者的报道不应苛求。报道者无实际恶意,适当履行了职责,就不应认定为存有过失。不允许媒体"出错",实际上是剥夺了媒体发现过错的权利。

关键词：名誉过失宽容缺陷报道

Enrichment regularity of tight sandstone reservoirs in Jurassic Shaximiao formation in Yingshan area, Northeast Sichuan

在线全文

学校读者我要写书评

暂无评论

Enrichment regularity of tight sandstone reservoirs in Juras...

2020年中国地球科学联合学术年会

作者： Wang Youzhi Zhu Simiao cheng dean Wang Haiyan Mao Cui Exploration and Development Research Institute of Daqing Oilfield Company Ltd School of Geosciences Northeast Petroleum University

The Yingshan gas field is located in the lower tectonic belt, northeast of the Sichuan Basin, and the main exploration formation is the Xujiahe of the upper Triassic. With the continuous discovery of large-scale reserves in the Shaximiao Formation, Sichuan Basin, the exploration and development of tight oil and gas has commenced[1].

关键词： Enrichment regularity of tight sandstone reservoirs in Jurassic Shaximiao formation in Yingshan area Northeast Sichuan

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

台北屋顶中国台北

世界建筑导报 2021年第3期36卷 10-13页

作者：无 PAUIYAN archiland(摄影) dean cheng(摄影) 平田晃久建筑设计事务所昌瑜建筑师事务所不详

台北屋顶位于台北市购物区,是一座12层的集体住宅。台湾人设计出各式各样的居间区,以适应湿热的气候。你可以巧妙地利用贯穿整个城市的道路扩建面的简单环境,看到人们享受吃饭聊天。台湾人既拥有丰富的生活方式,又充满21世纪的新鲜感,... 详细信息

台北屋顶位于台北市购物区,是一座12层的集体住宅。台湾人设计出各式各样的居间区,以适应湿热的气候。你可以巧妙地利用贯穿整个城市的道路扩建面的简单环境,看到人们享受吃饭聊天。台湾人既拥有丰富的生活方式,又充满21世纪的新鲜感,有没有可能考虑建造适合他们的公寓楼?因此,我们并没有选择参考基于平面图上的塔式建筑,而是选择了倾斜的形状,同时在对角线上控制范围,这样所有的住宅单元都可以有一个大露台。露台上覆盖着屋顶和树木,在建筑表面创造了一个舒适的三维居间区。

关键词：住宅单元塔式建筑公寓楼露台台湾人台北市屋顶中国台北

在线全文

学校读者我要写书评

暂无评论

永丰煤业轨道斜巷支护技术研究

能源与节能 2015年第7期 122-123页

作者：成德安山西煤炭运销集团晋城有限公司山西晋城048026 山西煤炭运销集团科学技术研究有限公司山西太原030006

以永丰煤业轨道斜巷作为研究对象,在原有支护的基础上,基于现场测试,确定新的支护方式。对于围岩岩性较好且基本无淋水的区段,采用锚网索喷支护;对于围岩破碎但可锚固性能达到要求的区段,采用加强锚网索喷支护;对于围岩破碎、淋水大,顶... 详细信息

以永丰煤业轨道斜巷作为研究对象,在原有支护的基础上,基于现场测试,确定新的支护方式。对于围岩岩性较好且基本无淋水的区段,采用锚网索喷支护;对于围岩破碎但可锚固性能达到要求的区段,采用加强锚网索喷支护;对于围岩破碎、淋水大,顶板岩层可锚固性能达不到要求的区段,仍采用U型钢棚支护。

关键词：斜巷破碎顶板支护

Evaluation of hydro-mechano-chemical behaviour of bentonite-sand mixtures

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2022年第2期14卷 637-652页

作者： Wenjing Sun cheng Liu Diansen Yang dean Sun Department of Civil and Energy Engineering College of Environmental Science and EngineeringDonghua UniversityShanghai201620China Institute for the Conservation of Cultural Heritage Shanghai UniversityShanghai200444China State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China Shanghai Construction Group Co. Ltd.Shanghai200080China Department of Civil Engineering School of Mechanics and Engineering ScienceShanghai UniversityShanghai200444China

Bentonite-sand mixtures are widely used in engineering barrier of deep geological disposal of high-level radioactive nuclear waste and anti-seepage barrier of civil geotechnical *** the action of groundwater solution infiltration and external stress,the hydro-mechanical(HM)behaviour of bentonitesand mixtures,*** swelling characteristics and permeability,will *** the anti-seepage and filtration effect is weakened or lost,the pollutants will spread to the ***,it is necessary to study the swelling characteristics and permeability of bentonite-sand mixtures under coupled mechanochemical(MC)effect and to establish corresponding prediction *** this reason,swelling tests under salt solution with different concentrations are conducted on pure bentonite and its mixtures with 30%,70%and 90%sand contents,the compression tests are carried out on saturated samples,and the saturated permeability coefficient k of the sample under each load is calculated by Terzaghi’s one-dimensional consolidation *** concepts of true effective stress pe,montmorillonite void ratio em and critical sand content as are introduced to determine the em-pe relationship and finally the k-em relationship of bentonite-sand *** is found that when the sand content aas,the em-pe relationship of the mixture is linear and independent of the salt solution concentration,and when a>as,the em-pe relationship of bentonite-sand mixture is bi-linear with the true effective deviatoric stress pesa as the *** addition,the em-k relationship also shows the linear trend when aas,and the slope of the line increases with the increase of the salt solution *** a>as,the k-em relationship will deviate from the linear ***,the larger the sand content is,the farther the deviation *** the basis of summing the regularity,a model for predicting the HM behaviour of bentonite-sand mixture under the coupled MC effect is proposed.B

关键词： Bentonite-sand mixture Hydro-mechano-chemical(HMC)behaviour Salt solution True effective stress

安徽省徽州地区翼手类及其越冬生态的初步观察

在线全文

学校读者我要写书评

暂无评论

兽类学报 1985年第2期 87-93页

作者：徐亚君程炳功方德安汪林安徽省徽州师范专科学校生物系

关于安徽省的翼手类,***(1938)、王岐山等(1966),黄文儿等(1978)、徐亚君等(1982)均有过报道,共记录了21种,分属菊头蝠科、蹄蝠科、蝙蝠科和犬吻蝠科,计4科11属。梁仁济等(1982)曾对皖南冬眠前蝙蝠的几项生理指标作过测定分析,但尚未见... 详细信息

关于安徽省的翼手类,***(1938)、王岐山等(1966),黄文儿等(1978)、徐亚君等(1982)均有过报道,共记录了21种,分属菊头蝠科、蹄蝠科、蝙蝠科和犬吻蝠科,计4科11属。梁仁济等(1982)曾对皖南冬眠前蝙蝠的几项生理指标作过测定分析,但尚未见到有关蝙蝠自然越冬生态的专题报道。我们于1981年10月—1982年5月,1982年10月—1983年4月,对徽州地区的31个蝙蝠越冬岩洞作了采集和观测。并选定了休宁县临溪、歙县王村和屯溪市三处共7个岩洞和一个市郊居民点作为系统采集观测点,先后进行了84个洞次的采集观测,现将有关材料初报如下。

关键词：翼手类(Chiroptera) 越冬生态(Overwintering ecology) 冬眠期(Hibernant period) 体温(Body temprature) 眠前阶段(Prehibernation stage) 栖息特性(Perch characteristics)

Self-Dual Hadamard Bent Sequences

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2023年第2期36卷 894-908页

作者： SHI Minjia LI Yaya cheng Wei CRNKOVIC dean KROTOV Denis SOLéPatrick Key Laboratory of Intelligent Computing Signal Processing Ministry of EducationSchool of Mathematical SciencesAnhui UniversityHefei 230601China State Key Laboratory of Information Security(Institute of Information Engineering) Chinese Academy of SciencesBeijing 100093China. LTCI Télécom ParisParis91120 PalaiseauFrance Secure-IC S.A.S. 104 Bd du Montparnasse75014 Paris Faculty of Mathematics University of RijekaNovosibirsk 630090Russia Sobolev Institute of Mathematics Novosibirsk 630090Russia Aix Marseille Univ CNRSCentrale MarseilleI2MMarseilleFrance

A new notion of bent sequence related to Hadamard matrices was introduced recently,motivated by a security application(Solé,et al.,2021).The authors study the self-dual class in length at most *** authors use three competing methods of generation:Exhaustion,Linear Algebra and Gr?bner *** Hadamard matrices and Bush-type Hadamard matrices provide many *** authors conjecture that if v is an even perfect square,a self-dual bent sequence of length v always *** authors introduce the strong automorphism group of Hadamard matrices,which acts on their associated self-dual bent *** authors give an efficient algorithm to compute that group.

关键词： Bent sequences bush-type Hadamard matrices Hadanard matrices PUF functions regular Hadamard matrices

Three-dimensional ultrasound subwavelength arbitrary focusing with broadband sparse metalens

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2022年第2期65卷 50-56页

作者： Xue Jiang JiaJie He ChuanXin Zhang HuaLiang Zhao WeiQi Wang dean Ta cheng-Wei Qiu Center for Biomedical Engineering School of Information Science and TechnologyFudan UniversityShanghai 200433China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

Ultrasound focusing in three-dimensional(3 D)space is of crucial and enduring significance in a variety of biomedical and industrial *** ultrasound focusing based on active phase array or passive geometry of bulky size is unable to realize the 3 D arbitrary focusing with subwavelength *** metamaterial of complex deep-subwavelength microstructure has facilitated the advanced airborne-sound-focusing but is inevitably not applicable for underwater ultrasound,restricted by the law between the multi-modes coupling/thermal viscosity and the feature size of the ***,we aim to circumvent the restriction by increasing the feature size of the metamaterial while keeping the compact overall geometry,and realize the robust subwavelength ultrasound focusing with the sparse metalens of the wavelength-scale *** theoretically propose and demonstrate numerically and experimentally the broadband arbitrary ultrasound focusing in 3 D *** axial and off-axis ultrasound focusing with the subwavelength resolution(FWHM<0.58λ)are achieved by the spatially sparse and compact metalens within one-octave *** advantages of 3 D freewheeling focusing,subwavelength resolution,spatial sparsity,geometric simplicity,and broadband,the sparse metalens would offer more initiatives to advanced researches in ultrasound focusing and empower applications such as precise biomedical imaging and therapy,nondestructive evaluation,integrated and multiplexed ultrasound devices.

关键词： broadband ultrasound focusing sparse metalens subwavelength resolution three-dimensional focusing

Regioselective oxidation of tetracycline by permanganate through alternating susceptible moiety and increasing electron donating ability

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第1期32卷 281-288页

作者： Xiaohua Jiang William AJefferson dean Song Hanyang cheng Fengmin Li Zhimin Qiang Aiqian Zhang Huijuan Liu Jiuhui Qu College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China The State Agriculture Ministry Laboratory of Quality&Safety Risk Assessment for Tobacco Tobacco Research InstituteChinese Academy of Agricultural SciencesQingdao 266101China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Enuironmental SciencesChinese Academy of SciencesBeijing 100085China

Permanganate has attracted much attention in wide range of chemistry and particularly in degradation of environmental ***,few studies have discussed the feature of regioselective reactivity of permanganate with specific moiety of the target ***,we studied the reaction between permanganate and tetracycline that is an emerging micropollutant with different species containing several electron-rich *** second-order rate constants increased from 6.0 to 9.0 and could be quantitatively modeled by considering the speciation of both reactants,yielding kTC0=11.7(mol/L)^-1 sec^-1,kTC-=35.7(mol/L)^-1 sec^-1,kTC2-=43.1(mol/L)^-1 sec^-1 for individual reaction *** products were then identified as the hydroxylated and demethylated *** result suggested a rate-limiting step of simple hydroxylation at the phenolic and/or alkene moieties,while the demethylation should be caused by the unavoidably formed manganese oxide via single electron *** is supported by the DFT calculation,indicating the primary oxidation of phenolic group of TC0 with activation barrier of 44.5 kcal/mol and of alkene group of TC-and TC2-with activation barriers of 44.0 and 43.4 kcal/mol,*** is in agreement with the experimental results,implying the alternation of regioselectivity associated with the deprotonation *** result was further supported by performing the Fukui function and electrostatic potential analysis,reflecting the more probable site and better electron donating tendency beneficial to the permanganate oxidation.

关键词： Permanganate oxidation of tetracycline Regioselective reactivity Rate-limiting hydroxylation step Altered susceptible moiety Increased electronegativity

MicroRNA-143 suppresses gastric cancer cell growth and induces apoptosis by targeting COX-2

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第43期19卷 7758-7765页

作者： Xiao-Li Wu Bin cheng Pei-Yuan Li Huan-Jun Huang Qiu Zhao Zi-Li Dan dean Tian Peng Zhang Department of Gastroenterology Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology Department of Gastrointestinal Surgery Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology

AIM:To investigate the function of microRNA-143(miR-143)in gastric cancer and explore the target genes of ***:A quantitative real-time reverse transcription-polymerase chain reaction(RT-PCR)analysis was performed to evaluate miR-143 expression in gastric cancer cell *** transfecting gastric cancer cells with miR-143-5p and miR-143-3p precursors,Alamar blue and apoptosis assays were used to measure the respective proliferation and apoptosis ***-2(COX-2)expression was determined by realtime RT-PCR and Western blot assays after *** plasmids were constructed,and a luciferase reporter assay was used to identify the miR-143 binding site on ***:Both miR-143-5p and miR-143-3p were significantly downregulated in multiple gastric cancer cell *** miR-143-5p and miR-143-3p expression in gastric cancer cells produced a profound cytotoxic ***-145-5p transfection into gastric cancer cells resulted in a greater growth inhibitory effect(61.23%±3.16%vs 46.58%±4.28%,P<0.05 in the MKN-1cell line)and a higher apoptosis rate(28.74%±1.93%vs 22.13%±3.31%,P<0.05 in the MKN-1 cell line)than miR-143-3p *** analysis indicated that COX-2 expression was potently suppressed by miR-143-5p but not by *** activity of a luciferase reporter construct that contained the 3’-untranslated region(UTR)of COX-2 was downregulated by miR-143-5p(43.6%±4.86%,P<0.01)but not by miR-143-3p.A mutation in the miR-145-5p binding site completely ablated the regulatory effect on luciferase activity,which suggests that there is a direct miR-145-5p binding site in the 3’-UTR of ***:Both miR-143-5p and miR-143-3p function as anti-oncomirs in gastric ***,miR-143-5p alone directly targets COX-2,and it exhibits a stronger tumor suppressive effect than miR-143-3p.

关键词： Gastric cancer MicroRNA-143 Anti-oncomir Cyclooxygenase-2 Apoptosis