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28篇 您的检索式:作者名="Zhang Guoru"
    题名 作者 年代 出处 被引量
1Broadband rhenium disulfide optical modulator for solid-state lasers显示文摘Rhenium disulfide(ReS_2), a member of group Ⅶ transition metal dichalcogenides(TMDs), has attracted increasing attention because of its unique distorted 1T structure and electronic and optical properties, which are much different from those of group Ⅵ TMDs(MoS_2, WS_2, MoSe_2, WSe_2, etc.). It has been proved that bulk ReS_2 behaves as a stack of electronically and vibrationally decoupled monolayers, which offers remarkable possibilities to prepare a monolayer ReS_2 facilely and offers a novel platform to study photonic properties of TMDs. However,due to the large and layer-independent bandgap, the nonlinear optical properties of ReS_2 from the visible to midinfrared spectral range have not yet been investigated. Here, the band structure of ReS_2 with the introduction of defects is simulated by the ab initio method, and the results indicate that the bandgap can be reduced from 1.38 to 0.54 eV with the introduction of defects in a suitable range. In the experiment, using a bulk ReS_2 with suitable defects as the raw material, a few-layered broadband ReS_2 saturable absorber(SA) is prepared by the liquid phase exfoliation method. Using the as-prepared ReS_2 SA, passively Q-switched solid-state lasers at wavelengths of 0.64,1.064, and 1.991 μm are investigated systematically. Moreover, with cavity design, a femtosecond passively modelocked laser at 1.06 μm is successfully realized based on the as-prepared ReS_2 SA for the first time. The results present a promising alternative for a rare broadband optical modulator and indicate the potential of ReS_2 in generating Q-switched and mode-locked pulsed lasers. It is further anticipated that this work may be helpful for the design of 2D optoelectronic devices with variable bandgaps.XIANCUI SU BAITAO ZHANG YIRAN WANG GUANBAI HE GUORU LI NA LIN KEJIAN YANG JINGLIANG HE SHANDE LIU 2018Photonics Research2018,6,6:4
2Identification of Biocontrol Strain HJX1 and Determination of Its Antifungal Spectrum显示文摘A biocontrol strain HJX1,which had good inhibitory effect against Fusarium oxysporum f. sp. cubense,was identified as Bacillus subtilis based on traditional morphology,16 S rRNA gene sequence and fatty acid profiles. The sequence of 16 S rRNA gene had 99% homology to B. subtilis according to the DNA fragment of 1 521 bp amplified with a pair of universal primers,P0 and P6,of bacteria. Confront culture with pathogenic fungi showed that this strain had good inhibitory effect against 10 pathogenic fungi.Zhao Gengfeng Qiu Yimin Zhang Yunxia Xiong Guoru 2014Plant Diseases and Pests2014,5,3:2
3Study on Sugarcane Smut显示文摘The pathogen and characteristics, infection cycle, occurrence regularity and damage symptoms of sugarcane smut were introduced in the paper. Moreover, the comprehensive prevention measures were proposed on the basis of planting disease-resistant species, strengthening cultivation managements to improve disease-resistant ability of sugarcane, and adopting fungicide control as assistant measures. The study provided certain basis for reducing damages of sugarcane smut and improving yield and quality of sugarcane.Guoru XIONG Shuzhen ZHANG 2012Plant Diseases and Pests2012,3,2:2
4Study on corrosion resistance of 201 stainless steel and 304 stainless steel 显示文摘Qin Liyan Zhai Ruiyin Zhang Guoru 2002Taigang Science and Technology2002,1,:1
5Isolation,Screening and Identification of Antagonistic Actinomycetes against Ustilago scitaminea Syd显示文摘[Objectives] This study was conducted to obtain actinomycetes strains having antagonistic effect on Ustilago scitaminea Syd. [Methods]At first,actinomycetes strains were isolated from 22 soil samples in Hainan sugarcane regions. Then,antagonistic actinomycetes against U. scitaminea were screened by confrontation culture. Finally,the taxonomic status of antagonistic actinomycetes was determined using 16 S rD NA. [Results] From the 22 samples,984 actinomycetes strains were isolated. From all the isolated strains,23 antagonistic actinomycetes strains were obtained through primary screening,and one strains with better antagonistic effect was then obtained through secondary screening,and designated FAS. 16 S rD NA identification showed that strain FAS shared 99% sequence similarity with Streptomyces cealestis US24. A phylogenetic tree was built with MAGE 7. 0 software,and the results showed that strain FAS had the shortest genetic distance with S. caelestis US24. Therefore,the actinomycetes FAS was determined as S. caelestis. [Conclusions]This study provides a new biocontrol method for the biological control of sugarcane smut,thereby ensuring sustainable development of sugarcane industry and sugar industry.Gengfeng ZHAO Guoru XIONG Wenzhi WANG Linbo SHEN Shuzhen ZHANG 2018Agricultural Biotechnology2018,7,4:1
6Colonization Ability of Bacillus subtilis HAS in Sugarcane显示文摘Bacillus subtilis HAS had good control effects on sugarcane smut in the field. Colonization dynamics of B. subtilis HAS were studied through biotics marker and pot culture, to understand the bio-control mechanism of the strain and provide experimental basis for commercialization.The results showed that B. subtilis HAS had strong colonization ability, which could be colonized in sugarcane root, stem, leaf and rhizosphere for long time, but the colonization levels were different. The colonization density of B. sutilis HAS remained 103 CFU/g soil in the rhizosphere and 102 CFU/g(fresh weight) in the root after inoculation of 60 d. The colonization in the rhizosphere decreased first, then increased and decreased again,and finally stabilized. The colonization in the root first increased then decreased. Meantime, colonization status in stems and leaves showed that the colonization density in stems and leaves was 10 CFU/g(fresh weight), indicating that the colonization level was not high in stem and leaf.Xiong Guoru Zhao Gengfeng Wang Wenzhi Shen Linbo Feng Xiaoyan Zhang Shuzhen 2018Plant Diseases and Pests2018,9,1:1
7Study on Acute Toxicity of Purified Protein HAS1 Expression in KM Mice显示文摘[Objectives]The antifungal protein HAS1 newly obtained was evaluated for acute toxicity safety in KM mice according to relevant national regulations,so as to eliminate people s concerns about the safety of transgenic plants.[Methods]The acute toxicity of the purified protein HAS1 was observed by intragastric administration of mice,and the poisoning symptoms,poisoning degree,recovery and death were observed.[Results]No abnormal toxicity symptoms were observed in the test group,the vehicle control group and the blank control group.The main tissues and organs were not abnormal in gross anatomy.The average body weight of each group showed an increasing trend compared with before administration at 1,3,7,11 and 14 d after administration.It was found that after giving the purified protein HAS1 to KM mice at a cumulative dose of 64 mg/kg a day,no obvious toxicity was observed in the acute toxicity test,indicating that the test substance was non-toxic by oral administration.[Conclusions]This study provides a basis for further use of the protein and its coding genes.Guoru XIONG Gengfeng ZHAO Jungang WANG Guilan XING Shuzhen ZHANG 2019Agricultural Biotechnology2019,8,4:1
8Performance analysis of probabilistic soft SSDF attack in cooperative spectrum sensing显示文摘Zhang Linyuan Wu Qihui Ding Guoru 2014Eurasip Journal on Advances in Signal Processing2014,81,1:1
9Performance Analysis of Probabilistic Soft SSDF Attack in Cooperative Spectrum Sensing显示文摘Zhang Linyuan Wu Qihui Ding Guoru 2014EURASIP Journal on Advances in Signal Processing2014,,1:1
10Effects of Differential Expression of Monosaccharide Transporter Genes on Yield Formation of Virus-free Sugarcane Seedlings显示文摘The yield increase effect was analyzed by planting disease-free sugarcane seedlings,and the differential expression of three monosaccharide transporter genes( SGT1,SGT2 and PST2a) in disease-free and untreated sugarcane seedlings was studied to clarify the functions of these genes on sugarcane yield. The yield was increased by 27. 2% by planting disease-free sugarcane seedlings. The expression levels of SGT1,SGT2 and PST2 a in leaves of virus-free plants were1-20 times higher than those in untreated sugarcane plants during the whole growth period. In addition,the expression levels of SGT1 and SGT2 in 1-8 internodes of sugarcane at elongation stage and maturity stage were 1-45 times higher than those in untreated plants. And the expression levels of PST2 a in 4-8 internodes of sugarcane plants at elongation stage were 4-7 times higher than those in untreated plants,but there was no difference in expression levels at maturity stage. The functions of different monosaccharide transporters varied among different growth stages. The three kinds of monosaccharide transporters might form a mutual cooperation network,and improved monosaccharide transport efficiency by increasing their self activity to provide more monosaccharide for cell metabolism,favorable for the yield increase of sugarcane stem.Wang Jungang Zhao Tingting Yang Benpeng Xiong Guoru Zhang Shuzhen 2017Plant Diseases and Pests2017,8,4:0
11Identification of A Strain HN-1 against Banana Wilt Disease and Determination of Its Antagonism显示文摘[Objective] The paper was to identify strain HN-1 against banana wilt disease and to determine its antagonism.[Method] The strain HN-1 was obtained from the soil in fields heavily infected by Fusarium oxysporum f.sp.cubense( FOC).Antagonism of the strain against F.oxysporum was tested via dual-culture and inhibition test on spore germination.[Result] HN-1 effectively inhibited mycelial growth and spore germination of F.oxysporum.Strain HN-1 was identified as Brevibacillus brevis according to its characteristics in morphology,physiology and biochemistry and its 16S rDNA sequence.The strain showed high inhibition effect on 15 species of fungal pathogens in the dual-culture trials with fungal pathogens.[Conclusion] The study provides theoretical basis for application of strain HN-1in agricultural fields.Shen Linbo Xiong Guoru Dong Lisha Kong Ran Guo Ting Zhang Shuzhen 2013Plant Diseases and Pests2013,4,4:0
12Cloning and Analysis of Chitinase Gene in Bacillus subtilis HAS显示文摘[Objective] The paper was to study the possible mechanism of chitinase gene. [Method] The chitinase gene with inhibitory effect against a variety of pathogenic fungi was cloned and analyzed in this study. [Result] The genome of HAS strain contained an ORF of 834 bp. The homology of coding protein corresponding to ORF with chitosanase [Bacillus subtilis subsp. subtilis str. 168](ref|NP_390566.1) was the highest of 98%(272/277).[Conclusion]Through the analysis of amino acid sequence and secondary structure of the protease, tertiary structure prediction and analysis, HAS strain may play a pivotal role in controlling Sporisorium scitaminea Syd.Xiong Guoru Zhao Gengfeng Cai Wenwei Wang Jungang Yang Benpeng Zhang Shuzhen 2019Plant Diseases and Pests2019,10,2:0
13Virus Infection Situation of 37 Sugarcane Varieties in Guilin City显示文摘To understand virus infection situation of integrated demonstration and regional test sugarcane varieties in national sugarcane system in Guilin City,Guangxi Province,leaf samples with or without symptoms were collected from 37 sugarcane varieties,and five kinds of viruses were detected by RT-PCR with specific primers,including Sugarcane yellow leaf virus( SCYLV),Sugarcane streak mosaic virus( SCSMV),Sorghum mosaic virus( SrM V),Sugarcane mosaic virus( SCMV) and Sugarcane bacilliform virus( SCBV). The results showed that SCYLV was detected from four sugarcane varieties,and the detection rate was10. 81%; SCSMV was detected from five sugarcane varieties,and the detection rate was 13. 51%; SrM V was detected from four sugarcane varieties,and the detection rate was 10. 81%; SCMV had not been found; SCBV was detected from 27 sugarcane varieties,and the detection rate was 72. 9%. Additionally,mixed infection of different viruses was widespread,and the total mixed infection rate was 21. 62%. Thus,integrated demonstration and regional test sugarcane varieties in national sugarcane system in Guilin City had been seriously infected by viruses,and mixed infection of different viruses was common. The paper will provide a reference for breeding and popularization of antiviral sugarcane varieties.Shen Linbo Xiong Guoru Wang Wenzhi Feng Xiaoyan Feng Cuilian Zhang Shuzhen 2017Plant Diseases and Pests2017,8,6:0
14Molecular Detection of Sugarcane Ratoon Stunting Disease in Hainan Sugarcane-growing Areas显示文摘[Objective]The paper was to clarify the occurrence of sugarcane ratoon stunting disease(RSD)in Hainan sugarcane-growing areas.[Method]In 2019,270 samples of sugarcane leaves were collected from six main sugarcane-growing areas in Hainan Province,and RSD was detected by PCR assay with specific primers.[Result]RSD was detected out in 41 out of 270 sugarcane samples,with an average detection rate of15.19%.The detection rates of RSD were different in six sugarcane-growing areas;the detection rate of RSD in Danzhou sugarcane-growing area was the highest of 22.00%;the detection rate of RSD in Lingao sugarcane-growing area was the lowest of 9.26%.RSD was detected out in 8 out of10 main sugarcane cultivars,among which Xintaitang 22 suffered the heaviest damage,with the positive detection rate of 45.83%;RSD had not been detected out in Zhongtang 1 and Zhongtang 2,while the positive detection rates of RSD in the remaining seven sugarcane cultivars were10.00%-31.25%.[Conclusion]RSD commonly occurs in Hainan sugarcane-growing areas.The research results provide a basis for scientific prevention and control of RSD and promotion and application of healthy virus-free sugarcane seedlings.Shen Linbo Xiong Guoru Feng Xiaoyan Wang Wenzhi Feng Cuilian Zhao Tingting Wang Jungang Wu Nannan Zhang Shuzhen 2020Plant Diseases and Pests2020,11,1:0
15Expression of Invertase Genes in Virus-free Sugarcane显示文摘Virus-free sugarcane seedlings have improved biomass and sucrose content compared with ordinary seedlings,and sucrose invertases are key enzymes regulating sugarcane growth and sucrose accumulation.In this study,the differences in the expression levels of 3 invertase genes,CWI,SAI and NI,between virusfree and ordinary sugarcane seedlings were analyzed.Compared with ordinary sugarcane plants,the expression of CWI was mainly up-regulated in immature leaves and stems at elongation stage and leaves and immature internodes at maturation stage,and especially,greatly up-regulated in immature internodes at maturation stage of virus-free plants.The expression of SAI and NI were mainly up-regulated in leaves and immature internodes of virus-free plants at maturation stage,which might be beneficial to sugar accumulation and rapid utilization of monosaccharide in the stalks of virus-free plants.It is further indicated that virus-free treatment could significantly improve the expression of sucrose invertases at late growth period,and might facilitate the increase of plant biomass.Jungang WANG Tingting ZHAO Benpeng YANG Wenwei CAI Cuilian FENG Jun ZENG Guoru XIONG Shuzhen ZHANG 2017Agricultural Biotechnology2017,6,4:0
16Research Progresses on Sucrose Accumulation and Genetic Improvement in Sugarcane显示文摘Sugarcane is an important sugar and energy crop in tropical areas. Sucrose is the main product of photosynthesis and the end accumulation carbohydrate.The sucrose accumulation mechanism in sugarcane is typical in plants. We summarized the new progresses of molecular mechanisms on sucrose accumulation in sugarcane and the genetic improvements on sugar trait by genetic modification techniques. In addition,the developments of genetic modification techniques were also concluded.Jungang WANG Tingting ZHAO Benpeng YANG Guoru XIONG Shuzhen ZHANG 2017Agricultural Biotechnology2017,6,5:0
17Preliminary Study on Production Conditions and Action Mechanism of Antifuingal Protein from Strain HJX1显示文摘Antagonistic bacterium HJX1 is a Bacillus subtilis strain isolated from field rhizosphere soil where banana wilt was serious,with certain control efficacy on banana Fusarium wilt.The crude extract obtained from its fermentation broth after ammonium sulfate precipitation has an inhibitory effect on various pathogenic fungi.The culture conditions for this strain were optimized in this study with Fusarium oxysporum f.sp.cubense as an indicator,and the results showed that the fermentation broth obtained from culture in LB liquid medium under 30 ℃ at 170 r / min for 48 h had the strongest inhibition against F.oxysporum f.sp.cubense.It was observed that the inhibition was mainly reflected by causing breakage and distortion of mycelia,followed by appearance of vesicles and swelling,ablation,and leakage of protoplasm.This study provides a scientific basis for the study on the action mechanism of crude protein from bacterial strain HJX1.Gengfeng ZHAO Yimin QIU Yunxia ZHANG Guoru XIONG 2016Agricultural Biotechnology2016,5,5:0
18Optimization of Streptomyces caelestis Culture Conditions and Preliminarily Determination of Its Antifungal Components显示文摘Streptomyces caelestis FAS is an actinomyces strain isolated with Ustilago scitaminea as an indicator. With GAUZE's medium as the basic medium,carbon source and nitrogen source in the medium and ventilation volume were optimized,and the antifungal substances produced by S. caelestis FAS were preliminarily determined through organic solvent extraction and ammonium sulfate precipitation. The results showed that the antifungal components produced by S. caelestis FAS were proteins,and the optimal culture conditions were using corn flour as carbon source and KNO_3 as nitrogen source and culturing in 250 ml triangular flask added with 70 ml of culture medium. The crude protein obtained under these culture conditions had the best antifungal effect with an inhibition zone diameter of 25 mm.This study will provide a scientific basis for further study on the antifungal mechanism and application of S. caelestis FAS.Gengfeng ZHAO Guoru XIONG Wenzhi WANG Linbo SHEN Shuzhen ZHANG 2018Agricultural Biotechnology2018,7,5:0
19Control Effects of 12 Kinds of Insecticides on Sugarcane Pests at Different Periods显示文摘[Objective]The paper was to study control effects of 12 kinds of insecticides on sugarcane pests at different periods.[Method]By field experiment,the control effects of different insecticides against sugarcane pests at planting stage,seedling stage and tillering stage of sugarcane were studied.[Result]After seedcane was treated by Chlorantraniliprole,Durivo and Seed soaking,the dead heart seedlings were significantly reduced in fields,and the control effects were87.13%±12.87%,85.22%±14.78%,82.71%±17.29%,respectively;Durivo(seedling emergence rate is 63.00%±10.30%)and Seed soaking(seedling emergence rate is 57.75%±4.50%)could also significantly enhance seedling emergence rate.After'removal-irrigation'treatment during seedling stage,the control effects of Flubendiamide(76.26%±4.31%)and Chlorantraniliprole(61.66%±6.65%)against sugarcane stem borer were significantly higher than Virtako(60.17%±7.06%),Deltamethrin(38.75%±9.88%),lambda-cyhalothrin(54.06%±6.83%),18%Dimehypo AS(37.98%±10.31%)and Dipterex(38.64%±9.34%).During tillering stage,with the increased application of 3.6%Dimehypo GR in cultivation and earthing up,the control effect on stem borer was significantly increased,and the control effect reached(72.03%±17.06%)as the dosage was 120 kg/hm2;when the dosage of phoxim exceeded 30 kg/hm2,the control effect on underground pests reached 44.00%±14.80%,and the control effect did not have significant difference as the dosage was ranged from 30kg/hm2to 60 kg/hm2.[Conclusion]The paper provided scientific basis for selection of different control methods,different chemicals and dosages against pests during different periods.Wu Suran Xiong Guoru Zhang Shuzhen Zhang Yuliang Wang Jungang Zeng Jun Yang Benpeng 2013Plant Diseases and Pests2013,4,5:0
20Effect of prolonging interval time between coronary angiography and percutaneous coronary intervention on X-ray-induced DNA double-strand breaks in blood lymphocytes显示文摘Zhang Guoru Li Yongjun Wang Mei Guo Bingyan Lyu Xinhu Liu Jin-bo Liu Dongchao Chang Liang 2014Chinese Medical Journal2014,,11:0
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