|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Propping by controlling shareholders, wealth transfer and firm performance: Evidence from Chinese listed companies显示文摘Propping acts by controlling shareholders are common in Chinese listed firms In this paper, we use data on related-party transactions of all listed Chinese firms from 2002 to 2008 to investigate the motivation behind controlling share holders' propping acts and subsequent wealth-transfer behavior and how both affect firm performance. We find that such institutional motivators as the maintenance of shell resources and qualification for refinancing have a significant effect on the propping behavior of controlling shareholders of Chinese listed firms and that such behavior is often followed by more serious tunneling when shareholders are driven by these motivators. Compared with non-state owned firms, state-owned firms with the motivation to qualify for refinancing exhibit more severe tunneling after engaging in propping behavior. We also find that while propping by controlling shareholders improves a firm's current operating performance, in firms whose controlling shareholders' are motivated by the desire to maintain shell resources or obtain a refinancing qualification their performance declines in the following year because of subsequent tunneling. The results presented in this paper provide us with a better understanding of the relationship between propping and tunneling, controlling shareholders engagement in both and the consequences of that behavior. | Qianwei Ying Liang Wang | 2013 | China Journal of Accounting Research2013，，2： | 9 |
| 2 | Magnetic fabrics in fault-related fold and its relation with finite strain: an example from Mingjiang thrust structures in Western Sichuan显示文摘磁性的危险性(AMS ) 的 anisotropy 是过去常测量微弱地使变形的沉积岩石的一种快、有效、敏感的技术,并且另外揭示差错相关的褶层的使变形的机制的一个可靠方法。在 Longmenshan 前面带,差错相关的褶层的一张典型剖面图被选择学习 AMS。224 个面向的标本的一个总数在在在 Xujiahe 形成开发的这结构的节的关键结构的位置分布式的 23 个不同采样地点被钻了上面三叠纪。磁性的织物的六种基本类型被认出并且通过这证实 AMS 们学习:1 ) 一件沉积织物;2 ) 一件起始的变丑织物;3 ) 一件铅笔结构织物;4 ) 一件弱劈开织物;5 ) 一件强壮的劈开织物;6 ) 一件拉长的线条织物。大多数磁性的织物被属于弄短的预先合拢的层平行(LPS ) 的纯砍结果的弱变丑的织物描绘,这被发现了。在差错拐弯褶层,几乎所有磁性的织物是弱变丑的起始的变丑织物,并且表示在前肢的变丑在背手足和没有有限紧张是比那强壮的,这在矿脉基卒下盘被显示出。当时在差错繁殖褶层,有限紧张在磁性的织物结果与运动学的模型的估计的后果近似一致的 trishear 地区被集中。磁性的织物显示的构造压力地是基本上沿着整个结构的节和表演的一样 NW 到 SE 压缩并且弄短它与 Longmenshan 褶层戳带的地区性的压缩压力地是一致的。 | Jia Dong Chen Zhuxin Luo Liang Hu Qianwei Jia Qiupeng | 2007 | Progress in Natural Science:Materials International2007，17，5： | 7 |
| 3 | Fusing T5 exonuclease with Cas9 and Cas12a increases the frequency and size of deletion at target sites显示文摘CRISPR/Cas systems, especially CRISPR/Cas9, generally result in small insertions/deletions, which are unlikely to eliminate the functions of regulatory and other non-coding sequences. To generate larger genomic deletions usually requires the use of pairs of guide RNAs. Here we show that it is possible to create such deletions with a single guide RNA by fusing Cas9 or Cas12a with T5 exonuclease(T5exo). These fusion constructs were found to increase both the frequency and size of deletions at target loci in rice protoplasts and seedlings. Moreover, the genome editing efficiencies of Cas9 and Cas12a were also enhanced by fusion with T5 exonuclease. These T5exo-Cas fusions expand the CRISPR toolbox, and facilitate knockout of regulatory and non-coding DNA sequences. From a wider standpoint, our results suggest a general strategy for producing larger deletions using other Cas nucleases. | Qianwei Zhang Kangquan Yin Guanwen Liu Shengnan Li Mengou Li Jin-Long Qiu | 2020 | Science China(Life Sciences)2020，63，12： | 6 |
| 4 | Fast and efficient aqueous arsenic removal by functionalized MIL-100(Fe)/rGO/δ-MnO2 ternary composites:Adsorption performance and mechanism显示文摘Because of its significant toxicological effects on the environment and human health,arsenic(As)is a major global issue.In this study,an Fe-based metal-organic framework(MOF)(Materials of Institut Lavoisier:MIL-100(Fe))which was impregnated with reduced graphene oxide(rGO)by using a simple hydrothermal method and coated with birnessitetype manganese oxide(δ-MnO2)using the one-pot reaction process(MIL-100(Fe)/rGO/δ-MnO2 nanocomposites)was synthesized and applied successfully in As removal.The removal efficiency was rapid,the equilibrium was achieved in 40 min and 120 min for As(Ⅲ)and As(Ⅴ),respectively,at a level of 5 mg/L.The maximum adsorption capacities of As(Ⅲ)and As(Ⅴ)at pH 2 were 192.67 mg/g and 162.07 mg/g,respectively.The adsorbent revealed high stability in pH range 2-9 and saturated adsorbent can be fully regenerated at least five runs.The adsorption process can be described by the pseudo-second-order kinetic model and Langmuir monolayer adsorption.The adsorption mechanisms consisted of electrostatic interaction,oxidation and inner sphere surface complexation. | Sittipranee Ploychompoo Jingda Chen Hanjin Luo Qianwei Liang | 2020 | Journal of Environmental Sciences2020，32，5： | 6 |
| 5 | Effect of Hydrological Connectivity on Soil Carbon Storage in the Yellow River Delta Wetlands of China显示文摘Hydrological connectivity has significant effects on the functions of estuarine wetland ecosystem.This study aimed to examine the dynamics of hydrological connectivity and its impact on soil carbon pool in the Yellow River Delta,China.We calculated the hydrological connectivity based on the hydraulic resistance and graph theory,and measured soil total carbon and organic carbon under four different hydrological connectivity gradients(Ⅰ0‒0.03,Ⅱ0.03‒0.06,Ⅲ0.06‒0.12,Ⅳ0.12‒0.39).The results showed that hydrological connectivity increased in the north shore of the Yellow River and the south tidal flat from 2007 to 2018,which concentrated in the mainstream of the Yellow River and the tidal creek.High hydrological connectivity was maintained in the wetland restoration area.The soil total carbon storage and organic carbon storage significantly increased with increasing hydrological connectivity fromⅠtoⅢgradient and decreased inⅣgradient.The highest soil total carbon storage of 0‒30 cm depth was 5172.34 g/m^(2),and organic carbon storage 2764.31 g/m^(2)inⅢgradient.The hydrological connectivity changed with temporal and spatial change during 2007‒2018 and had a noticeable impact on soil carbon storage in the Yellow River Delta.The results indicated that appropriate hydrological connectivity,i.e.0.08,could effectively promote soil carbon storage. | FENG Jiuge LIANG Jinfeng LI Qianwei ZHANG Xiaoya YUE Yi GAO Junqin | 2021 | Chinese Geographical Science2021，31，2： | 4 |
| 6 | Rapid detection of organophosphorus pesticide residue on Prussian blue modified dual-channel screen-printed electrodes combing with portable potentiostat显示文摘A novel electrochemical method for the rapid detection of organophosphorus pesticide residues was realized on a dual-channel screen-printed electrode(DSPE) that was integrated with a portable smartphone-controlled potentiostat. The two carbon working channels of DSPE were first modified by electrodepositing of Prussian blue. The channels were then modified with acetylcholinesterase(AChE)via Nafion. The inhibition ratio of AChE was detected by comparing the electrical current of acetylthiocholine(ATCh) that was catalyzed by the enzyme electrodes with(channel 1) and without(channel 2) organophosphorus pesticide. Inhibition ratios were related with the negative logarithm of the organophosphorus pesticide(trichlorfon, oxamyl, and isocarbophos) concentrations at optimum experimental conditions(pH 6.9 of electrolyte, 0.2 V working potential, 2.5 μL AChE modification amount, and 15 min inhibition time). The linear equations were I% = 32.301 gC +253.3(R = 0.9750) for isocarbophos, 1% = 35.991 gC + 270.1(R = 0.9668) for chlorpyrifos, and 1% = 33.701 gC+ 250.5(R = 0.9606) for trichlorfon. The detection limits were calculated as 10^(-7)g/mL. Given that the inhibition ratios were only related with pesticide concentration and not with pesticide species, the proposed electrodes and electrometer can rapidly detect universal organophosphorus pesticides and assess pesticide pollution. | Qianwei Shi Yuanjie Teng Yuchao Zhang Wenhan Liu | 2018 | Chinese Chemical Letters2018，29，9： | 4 |
| 7 | Relationship between COX-2 and cell cycle-regulatory proteins in patients with esophageal squamous cell carcinoma显示文摘AIM: To investigate the correlation between cyclooxygenase-2 (COX-2) and cell cycle-regulatory proteins in patients with esophageal squamous cell carcinoma (ESCC). METHODS: One hundred and two surgically obtained specimens of ESCC were randomly collected. All specimens were obtained from patients who had not received chemoor radiotherapy prior to surgical resection.Twenty-eight specimens of normal squamous epithelium served as controls. The expression of COX-2, Ki-67, cyclin A and p27 was examined by immunohistochemistry. The Pearson test was used to analyze the relationship between groups. RESULTS: The protein level of COX-2, Ki-67 and cyclin A was significantly higher in ESCC than in normal squamous epithelium (74.7±61.2 vs 30.2 ± 43.4, 64.0 ± 51.6 vs 11.6 ± 2.3, 44.2 ± 32.2 vs 11.7 ± 5.0, respectively, all P<0.01). In contrast, the protein level of p27 was signifi cantly lower in ESCC than in normal squamous epithelium (182.0 ±69.0 vs 266.4±28.0, P<0.01). In ESCC, COX-2 expression was correlated with T stage, the score of T1-T2 stage was lower than that of T3-T4 stage (55.0±42.3 vs 83.0 ± 66.5, P<0.05), and Ki-67, cyclin A and p27 expressions were correlated with the tumor differentiation (43.8±31.7 vs 98.4± 84.8, 32.0 ± 19.0 vs 54.1 ±53.7,206.2±61.5 vs 123.5±68.3, respectively, all P<0.01). COX-2 expression was positively correlated to Ki-67, cyclin A and negatively correlated to p27 expression in ESCC (r=0.270, 0.233 and-0.311, respectively, all P<0.05).CONCLUSION: The expression of COX-2 is correlated with tumor cell invasion and is closely related to the cell proliferation in patients with ESCC. | Jun-Xing Huang Mao-Song Lin Yun-Lei Zhang Feng-Yue Li Rong-Yu Qian Wei-Chang Chen Zheng-Xiang Song Ping Chen Eeva Salminen | 2010 | World Journal of Gastroenterology2010，16，47： | 3 |
| 8 | Enhanced removal of sulfonamide antibiotics from water by phosphogypsum modified biochar composite显示文摘Antibiotic pollution has become a global eco-environmental issue.To reduce sulfonamide antibiotics in water and improve resource utilization of solid wastes,phosphogypsummodified biochar composite(PMBC)was prepared via facile one-step from distillers grains,wood chips,and phosphogypsum.The physicochemical properties of PMBCwere characterized by scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FTIR),Zeta potential,X-ray diffraction(XRD),etc.The influencing factors,adsorption behaviors,and mechanisms of sulfadiazine(SD)and sulfamethazine(SMT)onto PMBC were studied by batch and fixed bed column adsorption experiments.The results showed that the removal rates of SD and SMT increased with the increase of phosphogypsum proportion,while decreased with the increase of solution pH.The maximum adsorption capacities of modified distillers grain and wood chips biochars for SD were 2.98 and 4.18 mg/g,and for SMT were 4.40 and 8.91mg/g,respectively,which was 9.0–22.3 times that of pristine biochar.Fixed bed column results demonstrated that PMBC had good adsorption capacities for SD and SMT.When the solution flow rate was 2.0 mL/min and the dosage of PMBC was 5.0 g,the removal rates of SD and SMT by modified wood chips biochar were both higher than 50%in 4 hr.The main mechanisms of SD and SMT removal by PMBC are hydrogen bonding,π-πdonor-acceptor,electrostatic interaction,and hydrophobic interaction.This study provides an effective method for the removal of antibiotics in water and the resource utilization of phosphogypsum. | Zonghong Jiang Miao Chen Xinqing Lee Qianwei Feng Ning Cheng Xueyang Zhang Shengsen Wang Bing Wang | 2023 | Journal of Environmental Sciences2023，，8： | 2 |
| 9 | Using multi-matching system based on a simplified deformable model of the human iris for iris recognition显示文摘A new method for iris recognition using a multi-matching system based on a simplified deformable model of the human iris was proposed. The method defined iris feature points and formed the feature space based on a wavelet transform. In the matching stage it worked in a crude manner. Driven by a simplified deformable iris model, the crude matching was refined. By means of such multi-matching system, the task of iris recognition was accomplished. This process can preserve the elastic deformation between an input iris image and a template and improve precision for iris recognition. The experimental results indicate the va- lidity of this method. | MING Xing , XU Tao , WANG Zheng-xuan 1 2 3 1. College of Computer Science and Technology, Nanling Campus,Jilin University, 5988 Renmin Street,Changchun 130022, P. R. China 2. College of Mechanical Science and Engineering, Nanling Campus,Jilin University, 5988 Renmin Street, Changchun 130022, P. R. China 3. College of Computer Science and Technology, Qianwei Campus,Jilin University, 10 Qianwei Road, Changchun 130012, P. R. China. | 2004 | Journal of Bionic Engineering2004，1，3： | 2 |
| 10 | The effect of weak interlayer on the failure pattern of rock mass around tunnel – Scaled model tests and numerical analysis显示文摘 | Feng Huang Hehua Zhu Qianwei Xu Yongchang Cai Xiaoying Zhuang | 2012 | Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2012，，： | 1 |
| 11 | Laboratory model tests and field investigations of EPB shield machine tunnelling in soft ground in Shanghai显示文摘 | Qianwei Xu Hehua Zhu Wenqi Ding Xiurun Ge | 2010 | Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2010，，1： | 1 |
| 12 | A study on theoretical calculation method of subway safety evaeuation显示文摘 | Zhang Bing Xu Zhisheng Zhao Qianwei | 2014 | Procedia Engi neering2014，71，： | 1 |
| 13 | LEAKAGE-PLUGGING WHILE DRILLING AND PLUGGING AGENTS显示文摘LEAKAGE-PLUGGINGWHILEDRILLINGANDPLUGGINGAGENTSPengZhenbinZhangXuzhiDaiQianwei(DepartmentofGeology,CentralSouthUniversityofTec... | Peng Zhenbin Zhang Xuzhi Dai Qianwei(Department of Geology, Central South University ofTechnology, Changsha 410083, China) | 1996 | Journal of Central South University1996，8，1： | 1 |
| 14 | Uniform Non-Bernoulli Sequences Oriented Locating Method for Reliability-Critical Gates显示文摘Hardening reliability-critical gates in a circuit is an important step to improve the circuit reliability at a low cost.However,accurately locating the reliability-critical gates is a key prerequisite for the efficient implementation of the hardening operation.In this paper,a probabilistic-based calculation method developed for locating the reliabilitycritical gates in a circuit is described.The proposed method is based on the generation of input vectors and the sampling of reliability-critical gates using uniform non-Bernoulli sequences,and the criticality of the gate reliability is measured by combining the structure information of the circuit itself.Both the accuracy and the efficiency of the proposed method have been illustrated by various simulations on benchmark circuits.The results show that the proposed method has an efficient performance in locating accuracy and algorithm runtime. | Jie Xiao Zhanhui Shi Weidong Zhu Jianhui Jiang Qianwei Zhou Jungang Lou Yujiao Huang Qiou Ji Ziwen Sun | 2021 | Tsinghua Science and Technology2021，26，1： | 1 |
| 15 | Defect detection of IC wafer based on spectral subtraction显示文摘 | Liu Hongxia Zhou Wen Kuang Qianwei | 2010 | IEEE Transactions on Semiconductor Manufacturing2010，23，1： | 1 |
| 16 | The Effect of Weal Interlayer on the Failure Pattern of Rock Pattern of Rock Mass Around Tunnel 显示文摘 | Huang Feng Zhu Hehua Xu Qianwei | 2013 | Tunnelling and Underground Space Technology2013，35，： | 1 |
| 17 | Civil Service Reform in China:An Unfinished Task of Value Balancing显示文摘 | Jing Yijia Qianwei Zhu | | 0，，02： | 1 |
| 18 | A Case History of Shield Tunnel Crossing through Group Pile Foundation of a Road Bridge with Pile Underpinning Technologies in Shanghai 显示文摘 | XU Qianwei ZHU Hehua MA Xianfeng | 2015 | Tunnelling and Underground Space Technology2015，，45： | 1 |
| 19 | Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope显示文摘To improve the understanding on the failure behavior and its anchoring effect of weak-broken rock slope,the rock of grade IV according to China is taken as reference prototype,and a series of model tests were carried out in laboratory.These tests can be divided into two categories,that is,with bolt reinforcement and without bolt reinforcement.In which,the stability of slope reinforced with different bolt diameter,different anchor length and different space are studied.The test results show that the collapse of slope is the combination of tension failure at the top and the compression-shearing failure at the bottom of the slope,and its failure process presents progressive characteristics.The contributions of bolt reinforcement are mainly reflected by the aspects of shear resistance,crack resistance and anti-extension.The reinforcement of blot not only can improve the vertical bearing capacity before failure,but also can reduce the vertical settlement and allow greater lateral rock wall deformation;what is more,the stress concentration degree in rock mass can be dispersed,which do help to improve the stability of slope rock mass. | Hehua ZHU Qianwei XU Wenqi DING Feng HUANG | 2011 | Frontiers of Structural and Civil Engineering2011，5，2： | 1 |
| 20 | A study on theoretical calculation method of subway safety evacuation显示文摘 | ZHANG Bing XU Zhisheng ZHAO Qianwei | 2014 | Procedia Engineering2014，71，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员