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| 1 | MP-WFRFT and Constellation Scrambling Based Physical Layer Security System显示文摘In this paper, a multiple parameters weighted fractional Fourier transform(MPWFRFT) and constellation scrambling(CS) method based physical layer(PHY) security system is proposed. The proposed scheme is executed by two steps. In the first step, MPWFRFT, implemented as the constellation beguiling(CB) method, is applied to change the signal's identity. In the second step the additional pseudo random phase information, regarded as the encryption key, is attached to the original signal to enhance the security. Typically, the pseudo random phase information can be removed effectively by the legitimate receiver. In contrast to the cryptography based encryption algorithms and the conventional PHY secrecy techniques, the main contribution of the proposed scheme is concentrated on the variation in signal's characteristics. Simulation results show that the proposed scheme can prevent the exchanging signal from eavesdroppers' classifi cation or inception. Moreover, the proposed scheme can guarantee the BER performance at a tolerate increasing in computational complexity for the legitimate receivers. | FANG Xiaojie SHA Xuejun LI Yue | 2016 | China Communications2016，13，2： | 26 |
| 2 | Guaranteeing Wireless Communication Secrecy via a WFRFT-Based Cooperative System显示文摘In this paper, a weighted fractional Fourier transform(WFRFT) based cooperative overlay system, aiming to guarantee physical layer(PHY) security, is proposed. The paper elaborates how WFRFT and physical layer properties of the wireless medium are collaborated to guarantee the secrecy of wireless transmissions. In the proposed system, WFRFT is first preform on the secret data, such that the transmitted signal is distorted and can only be neutralized by inverse-WFRFT with the same parameter. And then two streams of the transformed sequences that bearing different messages are cooperatively and simultaneously transmitted to two legitimate receivers via a beamforming-liked method, respectively. In general, both the rapid spatial decorrelation property and the inherent security features of WFRFT are leveraged, such that only the eavesdropper's is degraded, and hence, the wireless communication secrecy is reliably guaranteed. Numerical simulations are conducted to evaluate the performance of the proposed system in terms of the average bit error rate and the secrecy capacity. | Fang Xiaojie Sha Xuejun Mei Lin | 2015 | China Communications2015，12，9： | 18 |
| 3 | Effects of Primary Annealing Condition on Recrystallization Texture in a Grain Oriented Silicon Steel显示文摘The recrystallization texture in grain oriented silicon steel sheets, which were annealed at different primary annealing temperatures with and without an electric field, was investigated. An automated electron backscattered diffraction (EBSD) technique was used to analyze the recrystallization texture. It was found that recovery and application of electric field in primary annealing lead to an increase of {001} component and a decrease of {111} component after annealing at 900℃. The development of recrystallization texture can be explained in terms of the effects of electric field and primary annealing temperature on recovery. | Yubui SHA Fang ZHANG Song LI Xaoyu GAO Jiazhen XU Liang ZUO School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China | 2004 | Journal of Materials Science & Technology2004，20，3： | 9 |
| 4 | MiR-98 promotes chondrocyte apoptosis by decreasing Bcl-2 expression in a rat model of osteoarthritis显示文摘 | Jing Wang Lingqiang Chen Song Jin Jun Lin Hongmei Zheng Hong Zhang Hongtao Fan Fang He Sha Ma Qin Li | 2016 | Acta Biochimica et Biophysica Sinica2016，48，10： | 8 |
| 5 | Calcium contributes to photoprotection and repair of photosystem II in peanut leaves during heat and high irradiance显示文摘In this study, we investigated the effects of exogenous calcium nitrate on photoinhibition and thylakoid protein level in peanut plants under heat(40 °C) and high irradiance(HI)(1,200 m mol/m2 per s) stress. Compared with control seedlings(cultivated in 0 mmol/L Ca(NO3)2medium),the maximal photochemical ef ficiency of photosystem II(PSII)in Ca2t-treated plants showed a slight decrease after 5 h stress,accompanied by lower degree of PSII closure(1-q P), higher non-photochemical quenching, and lower level of membrane damage. Ca2 t inhibitors were used to analyze the varieties of antioxidant enzymes activity and PSII proteins. These results indicated that Ca2 t could protect the subunits of PSII reaction centers from photoinhibition by reducing the generation of reactive oxygen species. In the presence of both ethyleneglycol-bis(2-aminoethylether)-tetraacetic acid and ascorbic acid(As A), the net degradation of the damaged D1 protein was faster than that only treated with As A. Our previous study showed that either the transcriptional or the translational level of calmodulin was obviously higher in Ca2t-treated plants. These results suggested that, under Researh eat and HI stress, the Ca2 t signal transduction pathway can alleviate the photoinhibition through regulating the protein repair process besides an enhanced capacity for scavenging reactive oxygen species. | Sha Yang Fang Wang Feng Guo Jing-Jing Meng Xin-Guo Li Shu-Bo Wan | 2015 | Journal of Integrative Plant Biology2015，57，5： | 7 |
| 6 | The Relationship between Tectonic Subsidence and BSR of Upper Neogene in the Deep-Water Area of the Northern Continental Slope, South China Sea显示文摘BSR (Bottom Simulating Reflector) occurs widely in the strata since the late Miocene in the deep-water area of the northern continental slope of South China Sea (SCS). It is an important seismic reference mark which identifies the gas hydrate and its distribution influenced by the tectonic movements. Single-point basin modeling was conducted using 473 points in the study area. To discuss the relationships between the tectonic subsidence and BSR, the volume and rate of tectonic subsidence in each geological time have been simulated. The results show that there are three tectonic accelerate subsidence processes in the study area since the late Miocene, especially since 1.8Ma the tectonic subsidence accelerates more apparently. Since the Late Miocene to Pleistocene, the rate of tectonic subsidence in deep-water underwent a transformation from weak to strong. The ratio of tectonic subsidence to the total subsidence was relatively high (65-70%). Through the superposition of the BSR developed areas and the contours of tectonic subsidence in this area, it was discovered that more than 80% of BSR tend to be distributed at the slope break or depression-uplift structural transfer zone and the average tectonic subsidence rate ranges from 70 m/Ma to 125 m/Ma. | YU Xinghe WANG Jianzhong LI Shengli FANG Jingnan JIANG Longyan CONG Xiaorong LIANG Jinqiang SHA Zhibin | 2013 | Acta Geologica Sinica(English Edition)2013，87，3： | 6 |
| 7 | Research on Telescope TTL Coupling Noise in Intersatellite Laser Interferometry显示文摘The detection mission of gravitational waves in space is that the accuracy of the long-baseline intersatellite laser interferometry on the million-kilometer order needs to reach the order of 8 pm/Hz.Among all noise sources that affect the interferometry accuracy,tilt-to-length(TTL)coupling noise is the second largest source of noise after shot noise.This paper focuses on studying the contribution of TTL coupling noise of the telescope system in the intersatellite scientific interferometer.By referring to the laser interferometer space antenna(LISA)’s noise budget,TTL coupling noise is required to be within±25μm/rad(±300μrad).Therefore,this paper focuses on studying both the mechanism of TTL coupling noise due to the noise sources of the telescope and the method of suppressing the TTL noise,which can lay a foundation for noise distribution and the development of engineering prototypes in subsequent tasks. | Zhi WANG Tao YU Ya ZHAO Ziren LUO Wei SHA Chao FANG Yukun WANG Shaoxin WANG Keqi QI Yongxian WANG Xuanwen XU | 2020 | Photonic Sensors2020，10，3： | 5 |
| 8 | Efficacy and economic analysis of Ex- PRESS implantation versus trabeculectomy in uncontrolled glaucoma: a systematic review and Meta-analysis显示文摘AIM:To systematically review the current evidence based on the efficacy and cost of Ex-PRESS implantation and trabeculectomy(Trab)for uncontrolled glaucoma.·METHODS:Clinical trials were identified by electronic databases(Pub Med,EMBASE,ISI Web of science and Cochrane library),and data,such as intraocular pressure(IOP),the complete and qualified success rate,the postoperative complications and the cost,were exacted from these relevant studies.Weighted mean difference(WMD),odds ratio(OR)and 95%confidence intervals(CIs)were calculated and were pooled using a randomeffects model.·RESULTS:Eleven relevant publications and two abstracts met the inclusion criteria.The efficacy of ExPRESS was similar to that of Trab in the percentage of IOP reduction(IOPR%)at 1,2y(WMD:-2.01;95%CI:-7.92-3.90;P=0.50 and WMD:2.89;95%CI:-8.05-13.83;P=0.60,respectively).Ex-PRESS possessed a significant higher complete and qualified success rate(OR:1.59;95%CI:1.07-2.35;P=0.02 and OR:1.74;95%CI:1.06-2.86;P=0.03,respectively).Moreover,Ex-PRESS exerted a significantly lower frequency of hypotony and hyphema than Trab(OR:0.39;95%CI:0.21-0.72;P=0.003 and OR:0.27;95%CI:0.10-0.69;P=0.003,respectively).However,there was no consistent result on the cost between the two groups according to the previous three studies.·CONCLUSION:Both Trab and Ex-PRESS have equivalent efficacy in lowering IOP,yet Ex-PRESS had a lower risk of hypotony and hyphema than Trab.Nevertheless,whether the cost of Ex-PRESS was less than that of Trab should be further investigated to ensure evidence-based conclusion in the long run. | Ling Wang Fang Sha Da-Dong Guo Hong-Sheng Bi Jun-Kang Si Yu-Xiang Du Kai Tang | 2016 | International Journal of Ophthalmology(English edition)2016，9，1： | 5 |
| 9 | Consensus on the digestive endoscopic tunnel technique显示文摘With the digestive endoscopic tunnel technique(DETT), many diseases that previously would have been treated by surgery are now endoscopically curable by establishing a submucosal tunnel between the mucosa and muscularis propria(MP). Through the tunnel, endoscopic diagnosis or treatment is performed for lesions in the mucosa, in the MP, and even outside the gastrointestinal(GI) tract.At present, the tunnel technique application range covers the following:(1)Treatment of lesions originating from the mucosal layer, e.g., endoscopic submucosal tunnel dissection for oesophageal large or circular early-stage cancer or precancerosis;(2) treatment of lesions from the MP layer, per-oral endoscopic myotomy, submucosal tunnelling endoscopic resection, etc.; and(3) diagnosis and treatment of lesions outside the GI tract, such as resection of lymph nodes and benign tumour excision in the mediastinum or abdominal cavity. With the increasing number of DETTs performed worldwide, endoscopic tunnel therapeutics, which is based on DETT, has been gradually developed and optimized. However, there is not yet an expert consensus on DETT to regulate its indications, contraindications, surgical procedure, and postoperative treatment.The International DETT Alliance signed up this consensus to standardize the procedures of DETT. In this consensus, we describe the definition, mechanism,and significance of DETT, prevention of infection and concepts of DETTassociated complications, methods to establish a submucosal tunnel, and application of DETT for lesions in the mucosa, in the MP and outside the GI tract(indications and contraindications, procedures, pre-and postoperative treatments, effectiveness, complications and treatments, and a comparison between DETT and other operations). | Ning-Li Chai Hui-Kai Li En-Qiang Linghu Zhao-Shen Li Shu-Tian Zhang Yu Bao Wei-Gang Chen Philip WY Chiu Tong Dang Wei Gong Shu-Tang Han Jian-Yu Hao Shui-Xiang He Bing Hu1 Bing Hu2 Xiao-Jun Huang Yong-Hui Huang Zhen-Dong Jin Mouen A Khashab James Lau Peng Li Rui Li De-Liang Liu Hai-Feng Liu Jun Liu Xiao-Gang Liu Zhi-Guo Liu Ying-Cai Ma Gui-Yong Peng Long Rong Wei-Hong Sha Pateek Sharma Jian-Qiu Sheng Shui-Sheng Shi Dong Wan Seo Si-Yu Sun Gui-Qi Wang Wen Wang Qi Wu Hong Xu Mei-Dong Xu Ai-Ming Yang Fang Yao Hong-Gang Yu Ping-Hong Zhou Bin Zhang Xiao-Feng Zhang Ya-Qi Zhai | 2019 | World Journal of Gastroenterology2019，25，7： | 5 |
| 10 | An effective genetic algorithm to VDA with discontinuous “on-off” switches显示文摘With more and more improvements of atmosphere or ocean models,a growing number of physical processes in the form of parameterization are incorporated into the models,which,on the one hand,makes the models capable of describing the at-mospheric or oceanic movement more precisely,and on the other hand,introduces non-smoothness in the form of 'on-off' switches into the models.'On-off' switches enhance the nonlinearity of the models and finally result in the loss of the effec-tiveness of variational data assimilation(VDA) based on the conventional adjoint method(ADJ).This study,in virtue of the optimization ability of a genetic algorithm(GA) for non-smooth problems,presents a new GA(referred to as GA NEW) to solve the problems of the VDA with discontinuous 'on-off' processes.In the GA-NEW,adaptive selection and mutation oper-ators,blend crossover operator,and elitist strategy are combined in application.In order to verify the effectiveness and feasi-bility of the GA NEW in VDA,an idealized model of partial differential equation with discontinuous 'on-off' switches in the forcing term is adopted as the governing equation.By comparison with the ADJ,it is shown that the GA NEW in VDA is more effective and can yield better assimilation retrievals.In addition,VDA experiments demonstrate that the performance of a GA is greatly related to the configuration of genetic operators(selection,crossover and mutation operators) and much better results may be attained with more proper genetic operations.Furthermore,the robustness of the GA NEW to observational noise,model errors and observation density is investigated,and the results show that the GA NEW has stronger robustness than the ADJ with respect to all the three observation noises,model errors,and sparse observation. | ZHENG Qin SHA JianXin FANG ChangLuan | 2012 | Science China Earth Sciences2012，55，8： | 4 |
| 11 | Controlled Teleportation of an Unknown N-qubit Entangled GHZ State显示文摘<正> A scheme for controlled teleportation of an unknown N-qubit entangled GHZ state from the sender Aliceto the distant receiver Bob is proposed.And m-qubit GHZ state is sufficient for the task of control by m spatially-separated supervisors.Conditioned on the local operations executed by all participants,Bob can faithfully restore theoriginal state by performing relevant unitary transformations with the aid of some classical message about measurementresults.Anyone's absence will absolutely lead to the failure of teleportation. | JIANG Wei-Xing FANG Jian-Xing ZHU Shi-Qun SHA Jin-Qiao | 2007 | Communications in Theoretical Physics2007，47，6： | 4 |
| 12 | An Arabidopsis thaliana (Ler) inbred line AFDL exhibiting abnormal flower development mainly caused by reduced AP1 expression显示文摘The genetic network controlling flowering and flower development consists of a set of floral integrator genes that play a role in light sensing,hormone signaling and developmental pathways.These integrators activate the expression of meristem identity genes LEAFY (LFY) and APETALA1 (AP1) to initiate the flowering transition.However,how the expression of key genes,such as AP1,responds to diverse signals during flower development remains largely unknown.Here,we report that an Arabidopsis abnormal flower development inbred line (AFDL) exhibits a phenotype similar to the ap1 mutant,with delayed flowering time and a high frequency of transition of flower meristems into inflorescence meristems after flowering.The flower organs with an abnormal first whorl lack the second whorl and the increased number of inflorescences at the first-and second-whorl positions most closely resembled the phenotypes of ap1/cal double mutants.Interestingly,both normal and abnormal flowers coexisted in a single individual.Microarray and quantitative real-time PCR analysis revealed that the expression of AP1 was significantly reduced,while the expression of its interacting genes TERMINAL FLOWER 1 (TFL1),SHORT VEGETATIVE PHASE (SVP),AGAMOUS-like 24 (AGL24),SEPALLATA (SEP) and CAULIFLOWER (CAL) and upstream genes FLOWERING LOCUS C (FLC) and FLM were increased in AFDL,which could serve to explain its phenotype.The expression of genes responsive to different stimuli dramatically changed in AFDL relative to the wild type,as revealed by the differential display of transcripts,indicating that this expression variation is subject to a threshold,leading to an on/off expression pattern of the master regulatory gene (such as AP1) of flower development. | QI XiaoLi JIANG Yao TANG Fang WANG MinJie HU JianJun ZHAO ShuTang SHA Wei LU MengZhu | 2011 | Chinese Science Bulletin2011，56，1： | 4 |
| 13 | Rapid intelligent evaluation method and technology for determining engineering rock mass quality显示文摘The evaluation of engineering rock mass quality is fundamental work for the engineering activities of rock mass.The increasing scale of rock mass engineering necessitates higher intelligence,timeliness,and accuracy in engineering rock mass quality evaluation.As the core aspects of engineering rock mass quality evaluation,the structural characteristics,mechanical characteristics,and quality classification of rock mass have been innovated in recent years.The non-contact measurement technology for rock mass structure and rapid interpretation of rock mass structure information enables the intelligent extraction and analysis of rock mass structure parameters.The modular backpack laboratory system of rock mechanics provides an effective means to acquire rock mechanical parameters on-site conveniently.The theory of statistical mechanics of rock mass(SMRM)integrates various factors such as the rock mass properties,geological environment,and engineering disturbance,providing a theoretical basis for accurately evaluating the weakening and anisotropy of rock mass.The cloud computing platform established based on SMRM can provide technical support for the rapid calculation of rock mass parameters and instant evaluation of the rock mass quality.The development of intelligent evaluation method and technology is altering the conventional technical state of qualitative and semi-quantitative evaluation of engineering rock mass quality,supporting the realization of rock mass engineering construction with intellectualization and informatization. | Faquan Wu Jie Wu Han Bao Zhongxi Bai Lei Qiao Fang Zhang Bo Li Fuan Si Lei Yu Shenggong Guan Peng Sha Deheng Kong Zhenzhong Dai Kun Chen Yun Tian Changqing Liu | 2023 | Rock Mechanics Bulletin2023，2，2： | 3 |
| 14 | Clinicopathologic characteristics and therapeutic responses of Chinese patients with non-small cell lung cancer who harbor an anaplastic lymphoma kinase rearrangement显示文摘Introduction: The rearrangement of the anaplastic lymphoma kinase(ALK) gene accounts for approximately 1%–6% of lung adenocarcinoma cases and deines a molecular subgroup of tumors characterized by clinical sensitivity to ALK inhibitors such as crizotinib. This study aimed to identify the relationship between ALK rearrangement and the clinico?pathologic characteristics of non?small cell lung cancer(NSCLC) and to analyze the therapeutic responses of crizotinib and conventional chemotherapy to ALK rearrangement in NSCLC patients.Methods: A total of 487 lung cancer patients who underwent testing for ALK rearrangement in our department were included in this study. ALK rearrangement was examined by using fluorescence in situ hybridization(FISH) assay.Results: Among the 487 patients, 44(9.0%) were diagnosed with ALK rearrangement by using FISH assay. In 123 patients with adenocarcinoma who were non?smokers and of a young age(≤58 years old), the frequency of ALK rearrangement was 20.3%(25/123). Short overall survival(OS) was associated with non?adenocarcinoma tumor type(P = 0.006), poorly diferentiated tumors(P al growth factor rece= 0.001), advanced?stage tumors(P < 0.001), smoking history(P ptor(EGFR)(P = 0.008), and wild?type epidermrter time to cancer p= 0.008). Moreover, patients with poorly diferentiated and advanced?stage tumors had a shorogression compared with those with well diferentiated(P = 0.023) and early?stage tumors(P = 0.001), respectively.Conclusions: ALK?rearranged NSCLC tends to occur in younger individuals who are either non?smokers or light smokers with adenocarcinoma. Patients with ALK rearrangement might beneit from ALK inhibitor therapy. | Sha Fu Hai‑Yun Wang Fang Wang Ma‑Yan Huang Ling Deng Xiao Zhang Zu‑Lu Ye Jian‑Yong Shao | 2015 | Chinese Journal of Cancer2015，34，9： | 3 |
| 15 | Role of Retinal Nerve Fiber Layer Thickness and Optic Disk Measurement by OCT onEarly Diagnosis of Glaucoma显示文摘Purpose:.Glaucoma is an eye disease that can lead to irreversible optic nerve damage and cause blindness. Optical coherence tomography.(OCT) allows an early diagnosis of glaucoma by the measurements of the retinal nerve fiber and optic disc parameters.A retrospective study was designed to analyze the effects of the measurement of the retinal nerve fiber layer(RNFL) thickness and the optic disc tomography by spectraldomain OCT on the early diagnosis of suspected glaucoma and primary open angle glaucoma(POAG).Methods:.This was a clinical case-control study. The RNFL thickness around the optic disc and optic disk tomographic parameters of the control(n=51, 98 eyes), suspected glaucoma(n=81,.146 eyes), and POAG groups(n=55, 106 eyes) were measured by OCT. The parameters included superior, inferior, nasal and temporal mean RNFL thickness,.disc area(DA), cup area(CA), rim area(RA), disc volume(DV),cup volume(CV), rim volume(RV), cup / disc area ratio(CA / DA), rim / disc area ratio(RA / DA), cup / disc volume ratio(CV / DV) and rim / disc volume ratio(RV / DV).Results: Superior, nasal, and mean RNFL parameters, DA,CA,RA, DV, CV, CA / DA, RA / DA, CV / DV and RV / DV significantly differed among three groups by single-factorial ANOVA. Inferior and temporal RNFL thickness significantly differed between the control and POAG groups. No significant difference was observed in RV among three groups. In the POAG group,.the maximum area under the ROC curve(AROC) of mean RNFL thickness was 0.845. The maximum AROC of optic disk parameters was RA / DA(0.998), followed by CA / DA(0.997). The AROC of CA, RA, CV, and DV were all > 0.900.Conclusion:.OCT may serve as a useful diagnostic modality in distinguishing suspected glaucoma from POAG. | Zanmei Hua Qiuyun Fang Xiangyin Sha Ruiming Yang Zuopeng Hong | 2015 | Eye Science2015，30，1： | 3 |
| 16 | NK cells play a significant role in immunosurveillance at the early stage of MLL-AF9 acute myeloid leukemia via CD226/CD155 interactions显示文摘Acute myeloid leukemia(AML) is an aggressive hematological malignancy, and the mechanism underlying immune system involvement in leukemia development is unclear. In the present study, we utilized a myeloid/lymphoid or mixed-lineage leukemia; translocated to, 3(MLLT3/MLL-AF9)-induced AML mouse model with or without exposure to irradiation. We found that the leukemia cells could survive and expand in hosts with intact immune systems, whereas leukemia progression was accelerated in mice with impaired immune systems. Moreover, the leukemia cells escaped from host immunosurveillance via editing their immunogenicity, including the up-regulation of an inhibitory antigen(i.e., CD47) and the down-regulation of active antigens(i.e., CD86, CD54, retinoic acid early transcript(RAE), histocompatibility 2, D region locus b(H2-Db) and H2-Dd). Natural killer(NK) cells were activated in the early phase of AML progression, whereas T cells were stimulated in the late phase. Furthermore, NK cell depletion showed that NK cells were necessary for the elimination of leukemia cells in our AML mouse model. Notably, CD155/CD226 primarily mediated the interaction between NK cells and leukemia cells and contributed to the antitumor effects of NK cells during the early phase of AML. Clinical data from patients with diverse hematological malignancies showed that CD155 expression was decreased in hematological malignancies. Taken together, our results demonstrate that NK cells play a pivotal role in immunosurveillance against leukemia cells during the early stage of AML primarily through the CD226/CD155 interaction; however, NK cells are not sufficient to eliminate leukemia cells. | WANG YaJie CHEN Chen DONG Fang MA ShiHui XU Jing GONG YueMin CHENG Hui ZHOU Yuan CHENG Tao HAO Sha | 2015 | Science China(Life Sciences)2015，58，12： | 3 |
| 17 | 8-Weighted-Type Fractional Fourier Transform Based Three-Branch Transmission Method显示文摘To improve the bit error rate(BER) performance of multiple input multiple output(MIMO) systems with low complexity, a three-branch transmission scheme employing 8-weighted-type fractional Fourier transform(8-WFRFT) module is proposed. In the proposed scheme, the original signal is first decomposed into eight sub-signals and then merged into three component signals by the same carrier pattern. The three signals have mathematical constraint relations among themselves that can counteract the channel fading. They are simultaneously transmitted via three independent antennas after delay regulating. At the receiver, an inverse 8-WFRFT module is employed to obtain the estimated original signal by processing the received signal. Then, the bit error rate(BER) performance, transmitting power, transmission rate, power spectrum and computational complexity of the proposed scheme are analysed in detail. Numerical results show that the proposed scheme has a superior performance compared to STBC based three-antenna transmission scheme, in terms of BER performance. | Jing Li Xuejun Sha Xiaojie Fang Lin Mei | 2018 | China Communications2018，15，9： | 2 |
| 18 | SAR Image Despeckling Using Scale Mixtures of Gaussians in the Nonsubsampled Contourlet Domain显示文摘The edge and contour details in SAR images are important for subsequent processing tasks. The multiscale geometric analysis method — Nonsubsampled contourlet transform(NSCT) is able to capture the geometric information of SAR images effectively. Describing the aggregation behavior of the neighborhoods coefficients, the scale mixtures of Gaussians model has exhibited favorable performances. A novel SAR image despeckling method is presented by constructing the scale mixtures of Gaussians model of NSCT. This method models the SAR images using the multiscale and multidirection information in NSCT domain. The dependency relationship of NSCT neighborhoods coefficients are also taken into consideration in our model. The speckle noise coefficients are shrinkaged by statistical prior estimation based on SAR image model constructed. Experimental results demonstrate that our method is advantageous at directional information preservation and the speckle restraint. | CHANG Xia JIAO Licheng LIU Fang SHA Yuheng | 2015 | Chinese Journal of Electronics2015，24，1： | 2 |
| 19 | Pretreatment with low-frequency repetitive transcranial magnetic stimulation may influence neuronal Bcl-2 and Fas protein expression in the CA1 region of the hippocampus: A possible anti-epilepsy mechanism in a lithium-pilocarpine-induced epileptic rat mod显示文摘BACKGROUND: Bcl-2 and Fas proteins are well known as anti-apoptotic and pro-apoptotic factors, respectively. However, whether the anti-epileptic mechanism of low-frequency repetitive transcranial magnetic stimulation (rTMS) involves an anti-apoptotic effect via regulating Bcl-2 and Fas protein expression remains to be determined. OBJECTIVE: To verify the correlation between the anti-epileptic mechanism following pretreatment of low-frequency rTMS and anti-hippocampal apoptosis. DESIGN, TIME AND SETTING: A randomized controlled animal experiment was performed at Institute of Neurological Disorders, Affiliated Hospital of North Sichuan Medical College between September 2007 and March 2008. MATERIALS: Pilocarpine (053K13011) was provided by Sigma, USA; lithium was provided by Shanghai Biotechnology Co., Ltd., China; Dantec Maglite-r25 rTMS instrument was provided by Dundee, Denmark. METHODS: A total of 21 adult male Wistar rats were randomly divided into control (n = 6), rTMS pretreatment (n = 9), and sham-stimulation (n = 6) groups. The rTMS pretreatment group was pretreated with low-frequency rTMS (0.5 Hz, 75% threshold intensity, 20 times/bundle, and 5 bundles/day), while the sham-stimulation group was sham-stimulated with a similar sound for 7 successive days to establish lithium-pilocarpine-induced epileptic state models. MAIN OUTCOME MEASURES: Epileptic stroke latency; neuronal morphology was observed using hematoxylin and eosin staining; mean positive-reactive cell number and mean absorbance of Bcl-2 and Fas protein in the hippocampal CA1 region was observed using immunohistochemistry. RESULTS: Epileptic latency in the rTMS pretreatment group was significantly enhanced (P < 0.01), and a number of degenerated neurons were observed to be apoptotic. Bcl-2 protein expression increased at each time point, but Fas protein expression decreased (P < 0.01). CONCLUSION: Low-frequency rTMS has an anti-epileptic effect, which may be via regulation of Bcl-2 and Fas protein expression in the hippocampal region. | Sha Ke Hongning Zhao Xiaoming Wang Junqiang Zhang Fang Chen Yuanxu Wang Xiaoqiong Zhao Hui Huang Jianxiu Hu | 2010 | Neural Regeneration Research2010，5，12： | 2 |
| 20 | Effect of organic additives on positive electrolyte for vanadium redox battery显示文摘 | Sha Li Kelong Huang Suqin Liu Dong Fang Xiongwei Wu Dan Lu Tao Wu | 2011 | Electrochimica Acta2011，，16： | 2 |
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