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| 1 | Effects of resource additions on species richness and ANPP in an alpine meadow community显示文摘Aims Theories based on resource additions indicate that plant species richness is mainly determined by the number of limiting resources.However,the individual effects of various limiting resources on species richness and aboveground net primary productivity(ANPP)are less well understood.Here,we analyzed potential linkages between additions of limiting resources,species loss and ANPP increase and further explored the underlying mechanisms.Methods Resources(N,P,K and water)were added in a completely randomized block design to alpine meadow plots in the Qinghai-Tibetan Plateau.Plant aboveground biomass,species composition,mean plant height and light availability were measured in each plot.Regression and analysis of variance were used to analyze the responses of these measures to the different resource-addition treatments.Important Findings Species richness decreased with increasing number of added limiting resources,suggesting that plant diversity was apparently determined by the number of limiting resources.Nitrogen was the most important limiting resource affecting species richness,whereas Pand K alone had negligible effects.The largest reduction in species richness occurred when all three elements were added in combination.Water played a different role compared with the other limiting resources.Species richness increased when water was added to the treatments with N and P or with N,P and K.The decreases in species richness after resource additions were paralleled by increases in ANPP and decreases in light penetration into the plant canopy,suggesting that increased light competitionwas responsible for the negative effects of resource additions on plant species richness. | Zhengwei Ren Qi Li Chengjin Chu Luqiang Zhao Jieqi Zhang Dexiecuo Ai Yingbo Yang Gang Wang | 2010 | Journal of Plant Ecology2010，3，1： | 40 |
| 2 | Report on Childhood Obesity in China (9): Sugar-sweetened Beverages Consumption and Obesity显示文摘Objective To explore the associations between sugar-sweetened beverage (SSB) consumption and obesity as well as obesity-related cardiometabolic disorders among children in China. Methods A total of 6974 (boys 3558, girls 3412) children aged 6-13 years participated in the study. Each participant's height, weight, waist circumference, fasting glucose, triglycerides, total cholesterol, high- density lipoprotein cholesterol, and low-density lipoprotein cholesterol were measured. The type of beverage consumption was determined using a self-administered questionnaire. Results SSBs were consumed regularly by 46.1% of the children. The prevalence [adjusted odds ratio (95% confidence internal (CI)] of obesity was 7.6% [as the reference group (ref.)], 10.1% [1.36(1.07, 1.74)], and 11.6% [1.46(1.21, 1.75)], among children who regularly drank milk, other beverages and SSBs, respectively. Regularly drinking SSBs elevated the likelihood of abdominal obesity [adjusted odds ratio (95% CI): 1.36 (1.17, 1.59)]. The prevalence [adjusted odds ratio (95% CI)] of obesity among children who regularly drank sports/caloric beverages, carbonated beverages, sweet tea, and plant protein beverages was 16.8% [2.00(1.31, 3.07)], 12.7% [1.52(1.23, 1.88)], 11.5% [1.52(1.18, 1.95)], and 10.4% [1.41(1.03, 1.94)], respectively, which was higher than that of regular milk drinkers [7.6 % (ref.)]. The prevalence [adjusted odds ratio (95% CI)] of abdominal obesity among children who regularly drank sweet tea, fruit/vegetable juices, and carbonated beverages was 17.7% [1.55(1.26, 1.90)], 16.2% [1.36(1.09, 1.70)], and 15.3% [1.24(1.03, 1.50)], respectively, which was much higher than that of regular milk drinkers [12.8% (ref.)]. Conclusions Regular SSB consumption was positively related to obesity and abdominal obesity. This relationship should be investigated further using a longitudinal study design. | SHANG Xian Wen LIU Ai Ling ZHANG Qian HU Xiao Qi DU Song Ming MA Jun XU Gui Fa LI Ying GUO Hong Wei DU Lin LI Ting Yu MA Guan Sheng | 2012 | Biomedical and Environmental Sciences2012，25，2： | 23 |
| 3 | The role of Med19 in the proliferation and tumorigenesis of human hepatocellular carcinoma cells显示文摘 | Shao-wu ZOU Kai-xing AI Zhi-gang WANG Zhou YUAN Jun YAN Qi ZHENG | 2011 | Acta Pharmacologica Sinica2011，32，3： | 12 |
| 4 | Thermodynamic analysis and formula optimization of steel slag-based ceramic materials by FACTsage software显示文摘Using steel slag as a main raw material of ceramics is considered as a high value-added way. However, the relationship among the initial composition, ceramic microstructure, and macroscopic properties requires further study. In this paper, a series of ceramics with different slag ratios (0-70wt%) were designed, and the software FACTsage was introduced to simulate the formation of crystalline phases. The simulation results indicate that mullite is generated but drastically reduced at the slag ratios of 0-25wt%, and anorthite is the dominant crystalline phase in the slag content of 25wt%-45wt%. When the slag ratio is above 45wt%, pyroxene is generated more than anorthite. This is because increasing magnesium can promote the formation of pyroxene. Then, the formula with a slag content of 40wt% was selected and optimized. X-ray diffraction results were good consistent with the simulation results. Finally, the water absorption and bending strength of optimized samples were measured. | Xian-bin Ai Hao Bai Li-hua Zhao Da-qiang Cang Qi Tang | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，4： | 12 |
| 5 | Risk assessment on the epidemics of human infection with a novel avian influenza A (H7N9) virus in Jiangsu Province, China显示文摘A novel avian influenza A (H7N9) virus was discovered in February 2013 in China and has resulted in more than 100 comfirmed human infections including 26 fatal cases as of May 2, 2013. The situation raises many urgent questions and global public health concerns. In this study, epidemiologic characteristics of infected human cases in Jiangsu province were analyzed and risk assessment was undertaken based on the information available. Briefly, it is highly unlikely that a pandemic of human infection with avian influenza A (H7N9) virus will happen in Jiangsu Province in the near future. In the end, some measures are recommended to prevent the situation from becoming worse. | Wendong Liu Yefei Zhu Xian Qi Ke Xu Aihua Ge Hong Ji Jing Ai Changjun Bao Fenyang Tang Minghao Zhou | 2013 | The Journal of Biomedical Research2013，27，3： | 9 |
| 6 | CPU空气强迫对流冷却系统设计显示文摘根据空气强迫对流冷却系统一体化设计理念,对9238CPU风扇进行空气动力设计,由Fortran程序输出三维空间曲线文件,导入Pro/E实现实体造型.通过标准风洞对CNC铣床雕刻出的样品进行风扇性能测试.根据风扇数值模拟结果(风扇出口流场特性)设计系列放射状散热器.采用分块六面体网格技术,应用多参考旋转坐标系模型和RNGk-ε模型对风扇和曲线型散热器进行整体数值模拟,模拟结果表明曲线型散热器相对传统垂直型散热器热阻值降低15.9%,最后通过实验证明数值模拟的可信性.一体化设计思想指导下的系列散热器能达到高性能散热效果. | 周建辉 杨春信 AI QI 鲁俊勇 | 2007 | 电子学报2007，35，8： | 9 |
| 7 | Ursodeoxycholic acid protects interstitial Cajal-like cells in the gallbladder from undergoing apoptosis by inhibiting TNF-α expression显示文摘运动不足是胆石疾病的普通症状,它被空隙的象 Cajal 一样房间(ICLC ) 的损失在胆囊伴随。Ursodeoxycholic 酸(UDCA ) 广泛地在治疗胆石疾病被使用,并且除了它溶解胆石的能力显示出 anti-apoptotic 和反煽动性的效果。在这研究,我们与胆石在畿尼猪在 ICLC 上调查了 anti-apoptotic 和 UDCA 的反煽动性的效果。畿尼猪被喂为 8 个星期到的一本高胆固醇的食谱导致胆石的形成。一组动物被管理 UDCA (在跟随 553 的 consultation.ResultsA 总数的临床的管理的一个变化请教的 50 mgith 为 268 个婴儿被执行(gestational 年龄:在到控制的 CP 和 RAP.ResultsCompared 之间的 27ffect QOL 预言者(51.0ook 建筑群产品,它证明 GaoFen-3 是 SAR 图象在有另外的二幅 C 乐队 SAR 图象和它 3.5 dB 的 RR 会系统设计的一样的优秀水平。然后,这些 thr 的反散射系数?? | Jiang-fan WAN Shi-feng CHU Xin ZHOU Yue-ting LI Wen-bin HE Feng TAN Piao LUO Qi-di AI Qi WANG Nai-hong CHEN | 2018 | Acta Pharmacologica Sinica2018，39，9： | 8 |
| 8 | H2 strain attenuated live hepatitis A vaccines:protective efficacy in a hepatitis A outbreak显示文摘AIM To investigate the protective efficacy ofH2 strain attenuated live hepatitis A vaccines(H2-strain vaccines)in hepatitis A(HA)outbreaks.METHODS With the permission of theirparents,5551 pre-school and grade 1-3 primaryschool children were inoculated with 1 dose(106.5TCID50)of H2-strain vaccines in anonrandomized,controlled trial conducted inFucheng County,Hebei Province in May 1997.Another 6485 children in the same grades andcompatible in gender and age were enrolled ascontrols.Epidemiological and serological surveywas conducted to evaluate the protectiveefficacy of the vaccines.ELISA was used todetect serum IgM anti-HAV.RESULTS HA outbreak started in early May1998,peaked in the middle of the same month,and lasted about 80 days.Overall 302 HA caseswere found,192(53.58%)were 5-9 years old.One vaccinee and 25 control cases were found tohave hepatitis A,which account for 0.28%(1/356)and 5.92%(25/422)of all vaccinees andcontrols in the 14 villages,respectively.The protective efficacy of vaccines was 95.27%(95% Cl:85.83%-104.72%).In subjects testedfor anti-HAV IgM from 13 villages,1(0.40%)overt and 11(4.06%)asymptomatic HAV caseswere found in 271 vaccinees,but 21(6.69%)ofovert and asymptomatic ones were found in 314controls.CONCLUSION H2 strain vaccines were excellent in preventing overt hepatitis A, but not so effective in preventing asymptomatic hepatitis A virus infection. A booster dose might be needed to get permanent reliable immunity. | Yu Liang Zhao Zong Da Meng Zhi Yi Xu Jun Jie Guo Shao Ai Chai Cheng Gang Duo Xuan Yi Wang Jin Feng Yao Hong Bin Liu Shun Xiang Qi Hui Bin Zhu | 2000 | World Journal of Gastroenterology2000，6，6： | 7 |
| 9 | Ghrelin improves delayed gastrointestinal transit in alloxan-induced diabetic mice显示文摘AIM: To investigate the effects of ghrelin on delayed gastrointestinal transit in alloxan-induced diabetic mice. METHODS: A diabetic mouse model was established by intraperitoneal injection with alloxan. Mice were randomized into two main groups: normal mice group and diabetic mice group treated with ghrelin at doses of 0, 20, 50, 100 and 200 μg/kg ip. Gastric emptying (GE), intestinal transit (IT), and colonic transit (CT) were studied in mice after they had a phenol red meal following injection of ghrelin. Based on the most effective ghrelin dosage, atropine was given at 1 mg/kg 15 min before the ghrelin injection for each measurement. The mice in each group were sacrificed 20 min later and their stomachs, intestines, and colons were harvested immediately. The amount of phenol red was measured. Percentages of GE, IT, and CT were calculated. RESULTS: Percentages of GE, IT, and CT were significantly decreased in diabetic mice as compared to control mice (22.9 ± 1.4 vs 28.1 ± 1.3, 33.5 ± 1.2 vs 43.2 ± 1.9, 29.5 ± 1.9 vs 36.3 ± 1.6, P < 0.05). In the diabetic mice, ghrelin improved both GE and IT, but not CT. The most effective dose of ghrelin was 100 μg/kg and atropine blocked the prokinetic effects of ghrelin on GE and IT.CONCLUSION: Ghrelin accelerates delayed GE and IT but has no effect on CT in diabetic mice. Ghrelin may exert its prokinetic effects via the cholinergic pathway in the enteric nervous system, and therefore has therapeutic potential for diabetic patients with delayed upper gastrointestinal transit. | Wen-Cai Qiu Zhi-Gang Wang Ran Lv Wei-Gang Wang Xiao-Dong Han Jun Yan Yu Wang Qi Zheng Kai-Xing Ai | 2008 | World Journal of Gastroenterology2008，14，16： | 7 |
| 10 | Nrf2 epigenetic derepression induced by running exercise protects against osteoporosis显示文摘Osteoporosis(OP)is a common skeletal disease involving low bone mineral density(BMD)that often leads to fragility fracture,and its development is affected by multiple cellular pathologies and associated with marked epigenetic alterations of osteogenic genes.Proper physical exercise is beneficial for bone health and OP and reportedly possesses epigenetic modulating capacities;however,whether the protective effects of exercise on OP involve epigenetic mechanisms is unclear.Here,we report that epigenetic derepression of nuclear factor erythroid derived 2-related factor-2(Nrf2),a master regulator of oxidative stress critically involved in the pathogenesis of OP,mediates the significant osteoprotective effects of running exercise(RE)in a mouse model of OP induced by ovariectomy.We showed that Nrf2 gene knockout(Nfe2l2^(−/−))ovariectomized mice displayed a worse BMD reduction than the controls,identifying Nrf2 as a critical antiosteoporotic factor.Further,femoral Nrf2 was markedly repressed with concomitant DNA methyltransferase(Dnmt)1/Dnmt3a/Dnmt3b elevations and Nrf2 promoter hypermethylation in both patients with OP and ovariectomized mice.However,daily 1-h treadmill RE significantly corrected epigenetic alterations,recovered Nrf2 loss and improved the femur bone mass and trabecular microstructure.Consistently,RE also normalized the adverse expression of major osteogenic factors,including osteoblast/osteoclast markers,Nrf2 downstream antioxidant enzymes and proinflammatory cytokines.More importantly,the RE-conferred osteoprotective effects observed in the wild-type control mice were largely abolished in the Nfe2l2^(−/−)mice.Thus,Nrf2 repression due to aberrant Dnmt elevation and subsequent Nrf2 promoter hypermethylation is likely an important epigenetic feature of the pathogenesis of OP,and Nrf2 derepression is essential for the antiosteoporotic effects of RE. | Xingren Chen Xiaobo Zhu Ai Wei Fang Chen Qi Gao Ke Lu Qing Jiang Wangsen Cao | 2021 | Bone Research2021，9，2： | 6 |
| 11 | A Phytophthora capsid Effector Targets ACD11 Binding Partners that Regulate ROS-Mediated Defense Response in Arabidopsis显示文摘Reactive oxygen species (ROS) play a vital role in plant immune response, but the genes involved in the regulation of ROS are scantily reported. Phytophthora pathogens produce a large number of effectors to promote infection, but the modes of action adopted are largely unknown. Here, we report that RxLR207 could activate ROS-mediated cell death in Nicotiana benthamiana and was essential for virulence of P. capsici. We found that this effector targeted BPA1 (binding partner of ACD11) and four members of BPLs (BPAl-Like proteins)in Arabidopsis, and the bpa1 and bpl mutants had enhanced ROS accumulation and cell death under biotic or abiotic stresses. Furthermore, we showed that BPA1 and several BPLs functioned redundantly in plant immunity to P. capsici. We discovered that BPA1 and all six BPLs interacted with ACD11, and stabilization of ACD11 was impaired in the bpa 1, bpl2, bpl3, and bpl4 mutants. RxLR207 could promote the degradation of BPA1, BPL1, BPL2, and BPL4 to disrupt ACD11 stabilization in a 26S proteasome-dependent manner. Taken together, these fin dings indicate the important roles of Arabidopsis BPA1 and its homologs in ROS homeostasis and defense response, highlighting the usefulness of a pathogen effector-directed approach as a promising strategy for the discovery of novel plant immune regulators. | Qi Li Gan Ai Danyu Shen Fen Zou Ji Wang Tian Bai Yanyu Chen Shutian Li Meixiang Zhang Maofeng Jing Daolong Dou | 2019 | Molecular Plant2019，12，4： | 5 |
| 12 | An Aware-Scheduling Security Architecture with Priority-Equal Multi-Controller for SDN显示文摘Current SDN controllers suffer from a series of potential attacks. For example, malicious flow rules may lead to system disorder by introducing unexpected flow entries. In this paper, we propose Mcad-SA, an aware decision-making security architecture with multiple controllers, which could coordinate heterogeneous controllers internally as a 'big' controller. This architecture includes an additional plane, the scheduling plane, which consists of transponder, sensor, decider and scheduler. Meanwhile it achieves the functions of communicating, supervising and scheduling between data and control plane. In this framework, we adopt the vote results from the majority of controllers to determine valid flow rules distributed to switches. Besides, an aware dynamic scheduling(ADS) mechanism is devised in scheduler to intensify security of Mcad-SA further. Combined with perception, ADS takes advantage of heterogeneity and redundancy of controllers to enable the control plane operate in a dynamic, reliable and unsteady state, which results in significant difficulty of probing systems and executing attacks. Simulation results demonstrate the proposed methods indicate better security resilience over traditional architectures as they have lower failure probability when facing attacks. | Chao Qi Jiangxing Wu Guozhen Cheng Jianjian Ai Shuo Zhao | 2017 | China Communications2017，14，9： | 4 |
| 13 | Gene expression dynamics during the gonocyte to spermatogonia transition and spermatogenesis in the domestic yak显示文摘Background:Spermatogenesis is a cellular differentiation process that includes three major events:mitosis of spermatogonia,meiosis of spermatocytes and spermiogenesis.Steady-state spermatogenesis relies on functions of spermatogonial stem cells(SSCs).Establishing and maintaining a foundational SSC pool is essential for continued spermatogenesis in mammals.Currently,our knowledge about SSC and spermatogenesis is severely limited in domestic animals.Results:In the present study,we examined transcriptomes of testes from domestic yaks at four different stages(3,5,8 and 24 months of age)and attempted to identify genes that are associated with key developmental events of spermatogenesis.Histological analyses showed that the most advanced germ cells within seminiferous tubules of testes from 3,5,8 and 24 months old yaks were gonocytes,spermatogonia,spermatocytes and elongated spermatids,respectively.RNA-sequencing(RNA-seq)analyses revealed that 11904,4381 and 2459 genes were differentially expressed during the gonocyte to spermatogonia transition,the mitosis to meiosis transition and the meiosis to post-meiosis transition.Further analyses identified a list of candidate genes than may regulate these important cellular processes.CXCR4,a previously identified SSC niche factor in mouse,was one of the up-regulated genes in the 5 months old yak testis.Results of immunohistochemical staining confirmed that CXCR4 was exclusively expressed in gonocytes and a subpopulation of spermatogonia in the yak testis.Conclusions:Together,these findings demonstrated histological changes of postnatal testis development in the domestic yak.During development of spermatogonial lineage,meiotic and haploid germ cells are supported by dynamic transcriptional regulation of gene expression.Our transcriptomic analyses provided a list of candidate genes that potentially play crucial roles in directing the establishment of SSC and spermatogenesis in yak. | Guowen Wang Yongchang Li Qilin Yang Shangrong Xu Shike Ma Rongge Yan Ruina Zhang Gongxue Jia Deqiang Ai Qi’en Yang | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 3 |
| 14 | Systematic Characterization of Long Non-Coding RNAs and Their Responses to Drought Stress in Dongxiang Wild Rice显示文摘Long non-coding RNAs(lncRNAs) play important roles in response to various biotic and abiotic stresses. So far, systematic identification and characterization of lncRNAs have been reported in a few model plant species and major crops, but their roles in abiotic stress response have not yet been reported in common wild rice(Oryza rufipogon). Dongxiang wild rice(DXWR) possesses a high degree of drought resistance and has been well recognized as a precious genetic resource for drought resistant rice breeding. We presented the reference catalog of 1 655 novel lncRNA transcripts in DXWR using strand-specific RNA sequencing and bioinformatics approaches. Meanwhile, a total of 1092 lncRNAs were determined as differentially expressed lncRNAs under drought stress. Quantitative real-time PCR results exhibited a high concordance with RNA sequencing data, which confirmed that the expression patterns of lncRNAs based on RNA sequencing were highly reliable. Furthermore, 8 711 transcripts were predicted as target genes of the differentially expressed lncRNAs. Functional annotation analysis based on Gene Ontology and Kyoto Encyclopedia of Genes and Genomes databases showed that the target genes were significantly enriched in cellular and metabolic processes, cell part, binding and plant hormone signal transduction, as well as many other terms related to abiotic stress resistance. These results expanded our understanding of lncRNA biology and provided candidate regulators for genetic improvement of drought resistance in rice cultivars. | QI Weidong CHEN Hongping YANG Zuozhen HU Biaolin LUO Xiangdong AI Bing LUO Yuan HUANG Yu XIE Jiankun ZHANG Fantao | 2020 | Rice science2020，27，1： | 3 |
| 15 | Landscape ecology of the region around Qinghai Lake,Qinghai Province of China based on romote sensing显示文摘1IntroductionAsaveryhighandcoldregion,theQingzangPlateau(TibetQinghaiPlateau)isverypeculiarinecologicallandscapefeature.Alth... | Ni Shao xiang, Jiang Jian jun, Wang Jie cheng College of Geographic Science, Nanjing Normal University, Nanjing 210097, China Gong Ai qi, Wang Wei jun General Grassland Station of Qinghai Province, Xining 810001, China F.Voss Institute of | 1999 | Journal of Environmental Sciences1999，11，2： | 3 |
| 16 | Indoor massive multiple-input multiple-output channel characterization and performance evaluation显示文摘We present a measurement campaign to characterize an indoor massive multiple-input multiple-output (MIMO) channel system, using a 64-element virtual linear array, a 64-element virtual planar array, and a 128-element virtual planar array. The array topologies are generated using a 3D mechanical turntable. The measurements are conducted at 2, 4, 6, 11, 15, and 22 GHz, with a large bandwidth of 200 MHz. Both line-of-sight (LOS) and non-LOS (NLOS) propagation scenarios are considered. The typical channel parameters are extracted, including path loss,shadow fading, power delay profile, and root mean square (RMS) delay spread. The frequency dependence of these channel parameters is analyzed. The correlation between shadow fading and RMS delay spread is discussed. In addition, the performance of the standard linear precoder—the matched filter, which can be used for intersymbol interference (ISI) mitigation by shortening the RMS delay spread, is investigated. Other performance measures,such as entropy capacity, Demmel condition number, and channel ellipticity, are analyzed. The measured channels,which are in a rich-scattering indoor environment, are found to achieve a performance close to that in independent and identically distributed Rayleigh channels even in an LOS scenario. | Jian-zhi LI Bo AI Rui-si HE Qi WANG Mi YANG Bei ZHANG Ke GUAN Dan-ping HE Zhang-dui ZHONG Ting ZHOU Nan LI | 2017 | Frontiers of Information Technology & Electronic Engineering2017，18，6： | 3 |
| 17 | Effects of the momentum dependence of nuclear symmetry potential on pion observables in Sn+Sn collisions at 270 MeV/nucleon显示文摘Within a transport model,we investigated the effects of the momentum dependence of the nuclear symmetry potential on the pion observables in central Sn+Sn collisions at 270 MeV/nucleon.To this end,the quantity U^(∞)_(sym)(ρ_(0))(i.e.,the value of the nuclear symmetry potential at the saturation densityρ_(0) and infinitely large nucleon momentum)was used to characterize the momentum dependence of the nuclear symmetry potential.With a certain L(i.e.,the slope of the nuclear symmetry energy at(ρ_(0))),the characteristic parameter U^(∞)_(sym)(ρ_(0))of the symmetry potential significantly affects the production of−and+and their pion ratios.Moreover,by comparing the charged pion yields,pion ratios,and spectral pion ratios of the theoretical simulations for the reactions ^(108) Sn+^(112) Sn and ^(132)Sn+^(124)Sn with the corresponding data in the SRIT experiments,we found that our results favor a constraint on U^(∞)_(sym)(ρ_(0))(i.e.,−160_(−9)^(+18) MeV),and L is also suggested within a range of 62.7 MeV | Gao‑Feng Wei Xin Huang Qi‑Jun Zhi Ai‑Jun Dong Chang‑Gen Peng Zheng‑Wen Long | 2022 | Nuclear Science and Techniques2022，33，12： | 3 |
| 18 | The Discovery of Deep Potassium and Lithium Resources in the Huangjinkou Anticline, Northeast of Sichuan显示文摘Important clues have been found for potassiumprospecting in the Huangjinkou anticline of the northeastSichuan Basin in the 1970s (Zheng et al., 2015; Lin et al.,2004). In 2008, China Geological Survey launched aprospective investigation of potash resources in thewestern region of China, and the local governments andprivate-owned enterprises also responded positively. Then,during 2015-2016, the Land and Resources Department ofSichuan Province deployed potash prospecting drilling(borehole ZK601) in the Huangjinkou anticline, andobtained deep potassium and lithium resources. Theseresults may give a direction of marine potash prospectingin the Sichuan Basin. | ZHONG Jia'ai ZHENG Mianping TANG Xueyuan TANG Xue Yuan QI Wen ZHANG Zhen LIU Zhu WANG Fuming PANG Bo | 2018 | Acta Geologica Sinica(English Edition)2018，92，3： | 2 |
| 19 | InGaP/InGaAs/GaAs DHBT structural materials grown by GSMBE显示文摘Heterojunction bipolar transistor (HBT) is of great interest for the application to microwave power and analog circuits. As known, decreasing bandgap energy of the base layer in HBT can result in a smaller turn-on voltage. Using InGaAs as a base material in GaAs HBT is a possible approach to achieve the aim. In this work, a novel InGaP/InGaAs/GaAs double heterojunction bipolar transistor (DHBT) structure with an InGaAs base was designed and grown by gas source molecular beam epitaxy (GSMBE). High-quality InGaAs/GaAs hetero epi-layers and a good doping figure were obtained through optimizing the layer structure and the growth condition. The DHBT devices of a 120 μm×120 μm emitter area were fabricated by normal process and the good DC performance was obtained. A breakdown voltage of 10 V and an offset voltage of just 0.4 V were achieved. These results indicate that the InGaP/InGaAs/GaAs DHBT is suitable for low power-dissipation and high power applications. | AI Likun XU Anhuai SUN Hao ZHU Fuying QI Ming | 2006 | Rare Metals2006，25，z2： | 2 |
| 20 | Operation Efficiency and Influencing Factors of Listed Companies of Swine Industry:Empirical Analysis Based on Data of 16 Listed Companies in 2010-2014显示文摘Listed companies of the swine industry,as an important form of agricultural industrialized operation,are typical representatives of large-scale production and the level of their operation efficiency exerts a direct influence on the healthy development of the swine industry.Using the DEA-based Malmquist method,this paper made a static and dynamic evaluation of the operation efficiency of 16 listed companies in China's swine industry in 2010-2014. It obtained following results:( i) The overall efficiency of listed companies of China's swine industry remained at high level and the development trend was excellent.( ii) Different types of enterprises had difference in the overall efficiency,pure technical efficiency and scale efficiency. In general,pig feed processing companies had the best performance,followed by slaughtering and deep processing companies,and swine breeding companies were the worst.( iii) The total factor productivity characterized by the Malmquist index declined year by year in 2010-2013 and was improved in 2014,mainly due to technological progress.( iv) The total asset turnover ratio,equity concentration,and R & D management level had a significantly positive impact on the operation efficiency of listed companies in the swine industry,while the human capital had a significantly negative impact. | Mengqi YOU Zhenhong QI Ai’e WANG Xinrui LI Weihong HUANG Wenbin WAN | 2017 | Asian Agricultural Research2017，9，3： | 2 |
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