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| 1 | Quasi-equilibrium glide adaptive guidance for hypersonic vehicles显示文摘The entry-glide guidance strategy for hypersonic vehicles that can satisfy both terminal and path constraints is investigated in this paper.We propose a quasi-equilibrium glide adaptive guidance methodology based on the quasi-equilibrium glide condition(QEGC),which innovatively utilizes the quasi-equilibrium glide phenomenon in lifting entry.With the aid of QEGC,both range and terminal velocity can be predicted analytically with high precision.The path constraints are converted into angle of attack constraints,which has been difficult to realize by using traditional predictive guidance methods.The algorithm is independent of the standard trajectory.All the guidance commands,including the bank angle and the angle of attack,are calculated analytically in real time,which endows the algorithm with sufficient adapbility.The results of a CAV-H vehicle guidance test show that the algorithm leads the vehicle along a quasi-equilibrium glide trajectory satisfying both the terminal and path constraints and has sufficient flexibility for occasional mission changes.Furthermore,the robustness of the guidance algorithm under disturbances is validated through a Monte Carlo simulation. | XU MingLiang CHEN KeJun LIU LuHua TANG GuoJian | 2012 | Science China(Technological Sciences)2012，55，3： | 30 |
| 2 | Association of KIR Genotypes and Haplotypes with Susceptibility to Chronic Hepatitis B Virus Infection in Chinese Han Population显示文摘Killer immunoglobulin-like receptor (KIR) genes can regulate the activation of NK and T cells upon interaction with HLA class I molecules. Hepatitis B virus (HBV) infection has been regarded as a multi-factorial disorder disease. Previous studies revealed that KIRs were involved in HCV and HIV infection or clearance. The aim of this study was to explore the possibility of the inheritance of KIR genotypes and haplotypes as a candidate for susceptibility to persistent HBV infection or HBV clearance. The sequence specific primer polymerase chain reaction (SSP-PCR) was employed to identify the KIR genes and pseudogenes in 150 chronic hepatitis B (CHB) patients, 251 spontaneously recovered (SR) controls, and 412 healthy controls. The frequencies of genotype G, M, FZ1 increased in CHB patients compared with healthy control subjects. The frequency of genotype AH was higher in SR controls than that in both CHB patients and healthy controls. The carriage frequencies of genotype G and AH were higher; while, the frequencies of AF and AJ were lower in SR controls than those in healthy control subjects. The frequency of A haplotype was lower, whereas, the frequency of B haplotype was higher in CHB patients and SR controls than those in healthy controls. In healthy controls, haplotype 4 was found lower compared with that in CHB patients and SR controls and the frequency of haplotype 5 was higher in SR controls than that in other two groups. Based on these findings, it seems that the genotypes M and FZ1 are HBV susceptive genotypes; AH, on the other hand, may be protective genotypes that facilitate the clearance of HBV. It appears that the haplotype 4 is HBV susceptive haplotype, whereas, haplotype 5 may be the protective haplotype that facilitates the clearance of HBV. | Zhiming Lu Bingchang Zhang Shijun Chen Zhongtao Gai Zhaolei Feng Xiangdong Liu Yiqing Liu Xin Wen Li Li Yulian Jiao Chunyan Ma Song Shao Xiangfa Cui Guojian Chen Jianfeng Li Yneran Zhao | 2008 | Cellular & Molecular Immunology2008，5，6： | 13 |
| 3 | Laboratory Simulation of Vertical Hydrocarbon Microseepage显示文摘基于烃 microseepage 的一个概念的模型,当模仿的 caprock 和它的 overlying 阶层首先被设置模仿烃 microseepage 和它的近表面的表情的过程,一台宏大小的试验性的设备使用了水泥和石英沙的匹配的混合物。模拟实验的结果建议那模仿的 caprock,它的 overlying 阶层有某个封上的能力;烃 microseepage 被点气体来源的压力统治,并且温度起仅仅一个辅助作用;在烃 microseepage 的路径上,烃集中的分发是扇形的;由模仿的 caprock 和它的 overlying 阶层的链烷的微分吸附导致色析法的效果的出现。在模仿的 caprock 以内的不同移居模式被 i 钢瓶煤气的比率显示出到 n 钢瓶煤气。在表面土壤的烃的集中与点气体来源的压力有好通讯。这些模拟结果是重要的推进在表面地球化学探索恢复的异例的机制的学习。 | WANG Guojian CHENG Tongjin FAN Ming REN Chun CHEN Weijun | 2011 | Acta Geologica Sinica(English Edition)2011，85，1： | 7 |
| 4 | Tunable slow-light multi-mode photonic crystal waveguides based on the coupling of square cavities显示文摘The light transmission properties through two-dimensional photonic crystal waveguides based on coupling of square cavities are studied by the finite-difference time-domain technique.Through interlacing the adjacent cavities along the direction vertical to the waveguide,the coupling distance between the adjacent cavities is extended,and the group velocity of the guiding modes can be slowed by five-fold compared with that in vacuum.Because of the different spatial field distributions of various resonant modes,the corresponding group velocities are also different for the same CROW structure. | FENG Shuai YANG GuoJian LI YuXi CHEN Xiao WANG YiQuan WANG WenZhong | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，10： | 5 |
| 5 | Effects of bolt profile and grout mixture on shearing behaviors of bolt-grout interface显示文摘Shearing behavior and failure mechanism of bolt-grout interface are of great significance for load transfer capacity and design of rock bolting system.In this paper,direct shear tests on bolt-grout interfaces under constant normal load(CNL) conditions were conducted to investigate the effects of bolt profile(i.e.rib spacing and rib height) and grout mixture on the bolt-grout interface in terms of mechanical behaviors and failure modes.Test results showed that the peak shear strength and the deformation capacity of the bolt-grout interface are highly dependent on the bolt profile and grout mixture,suggesting that bolt performances can be optimized,which were unfortunately ignored in the previous studies.A new interface failure mode,i.e.'sheared-crush' mode,was proposed,which was characterized by progressive crush failure of the grout asperities between steel ribs during shearing.It was shown that the interface failure mode mainly depends on the normal stress level and rib spacing,compared with the rib height and grout mixture for the range of tested parameters in this study. | Chuanqing Zhang Guojian Cui Xiangrong Chen Hui Zhou Liang Deng | 2020 | Journal of Rock Mechanics and Geotechnical Engineering2020，12，2： | 4 |
| 6 | Characterization of different-Al-content AlGaN/GaN heterostructures on sapphire显示文摘Al x Ga 1-x N/GaN high-electron-mobility transistor (HEMT) structures with Al composition ranging from x = 0.13 to 0.36 are grown on sapphire substrates by low-pressure metalorganic chemical vapor deposition (LP-MOCVD). The effects of Al content on crystal quality, surface morphology, optical and electrical characteristics of the AlGaN/GaN heterostructures have been analyzed. Although high Al-content (36%) heterostructure exhibits a distinguished photoluminescence peak related to recombination between the two-dimensional electron gas and photoexcited holes (2DEG-h), its crystal quality and rough surface morphology are poor. 2DEG mobility increases with the Al content up to 26% and then it apparently decreases for high Al-content (36%) AlGaN/GaN heterostructure. The increase of sheet carrier density with the increase of Al content has been observed. A high mobility at room temperature of 2105 cm 2 /V s with a sheet carrier density of n s = 1.10 × 10 13 cm -2 , for a 26% Al-content AlGaN/GaN heterostructure has been obtained, which is approaching state-of-the-art for HEMT grown on SiC. Sheet resistance as low as 274 Ω/□ has also been achieved. | DING GuoJian , GUO LiWei, XING ZhiGang, CHEN Yao, XU PeiQiang, JIA HaiQiang, ZHOU JunMing & CHEN Hong Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 3 |
| 7 | A dicationic ionic liquid-modified phosphotungstate hybrid catalyst for the heterogeneous oxidation of alcohols with H_2O_2显示文摘An ionic hybrid catalyst 1,1'-(butane-1,4-diyl)-bis(3-methylimidazolium) phosphotungstate(abbreviated [Dmim] 1.5 PW) has been prepared by anion-exchange of the divalent ionic liquid(IL) 1,1'-(butane-1,4-diyl)-bis(3-methylimidazolium) di(bromide) with the Keggin phosphotungstic acid H 3 PW 12 O 40,and characterized by IR,1 H NMR,13 C NMR,ESI-MS,TG,SEM,XRD,BET surface area measurements,elemental analysis,and melting point.The hybrid material was evaluated as a catalyst for the oxidation of alcohols with aqueous hydrogen peroxide under various conditions.The catalytic performance of [Dmim] 1.5 PW was also compared with related catalysts bearing other cations or anions.The new hybrid [Dmim] 1.5 PW proved to be an efficient liquid-solid heterogeneous catalyst for H2O2-based oxidation of alcohols,with the advantages of high conversion and selectivity,easy recovery,and quite good reusability. | LENG Yan ZHAO PingPing ZHANG MingJue CHEN GuoJian WANG Jun | 2012 | Science China Chemistry2012，55，9： | 2 |
| 8 | Roles of SlETR7,a newly discovered ethylene receptor,in tomato plant and fruit development显示文摘Ethylene regulates many aspects of plant growth and development.It is perceived by a family of ethylene receptors(ETRs)that have been well described.However,a full understanding of ETR function is complicated by functional redundancy between the receptor isoforms.Here,we characterize a new ETR,SlETR7,that was revealed by tomato genome sequencing.SlETR7 expression in tomato fruit pericarp increases when the fruit ripens and its expression is synchronized with the expression of SlETR1,SlETR2,and SlETR5 which occurs later in the ripening phase than the increase observed for SlETR3,SlETR4,and SlETR6.We uncovered an error in the SlETR7 sequence as documented in the ITAG 3 versions of the tomato genome which has now been corrected in ITAG 4,and we showed that it belongs to sub-family II.We also showed that SlETR7 specifically binds ethylene.Overexpression(OE)of SlETR7 resulted in earlier flowering,shorter plants,and smaller fruit than wild type.Knock-out(KO)mutants of SlETR7 produced more ethylene at breaker(Br)and Br+2 days stages compared to wild type(WT),but there were no other obvious changes in the plant and fruit in these mutant lines.We observed that expression of the other SlETRs is upregulated in fruit of SlETR7 KO mutants,which may explain the absence of obvious ripening phenotypes.Globally,these results show that SlETR7 is a functional ethylene receptor.More work is needed to better understand its specific roles related to the six other tomato ETRs. | Yi Chen Guojian Hu Celeste Rodriguez Meiying Liu Brad M.Binder Christian Chervin | 2020 | Horticulture Research2020，7，1： | 2 |
| 9 | Cryptococcus neoformans,a global threat to human health显示文摘Background Emerging fungal pathogens pose important threats to global public health. The World Health Organization has responded to the rising threat of traditionally neglected fungal infections by developing a Fungal Priority Pathogens List (FPPL). Taking the highest-ranked fungal pathogen in the FPPL,Cryptococcus neoformans, as a paradigm, we review progress made over the past two decades on its global burden, its clinical manifestation and management of cryptococcal infection, and its antifungal resistance. The purpose of this review is to drive research efforts to improve future diagnoses, therapies, and interventions associated with fungal infections.Methods We first reviewed trends in the global burden of HIV-associated cryptococcal infection, mainly based on a series of systematic studies. We next conducted scoping reviews in accordance with the guidelines described in the Preferred Reporting Items for Systematic Reviews and Meta-analyses extension for Scoping Reviews using PubMed and ScienceDirect with the keywordCryptococcus neoformans to identify case reports of cryptococcal infections published since 2000. We then reviewed recent updates on the diagnosis and antifungal treatment of cryptococcal infections. Finally, we summarized knowledge regarding the resistance and tolerance ofC. neoformans to approved antifungal drugs.Results There has been a general reduction in the estimated global burden of HIV-associated cryptococcal meningitis since 2009, probably due to improvements in highly active antiretroviral therapies. However, cryptococcal meningitis still accounts for 19% of AIDS-related deaths annually. The incidences of CM in Europe and North America and the Latin America region have increased by approximately two-fold since 2009, while other regions showed either reduced or stable numbers of cases. Unfortunately, diagnostic and treatment options for cryptococcal infections are limited, and emerging antifungal resistance exacerbates the public health burden.Conclusions The rising threat ofC. neoformans is compounded by accumulating evidence for its ability to infect immunocompetent individuals and the emergence of antifungal-resistant variants. Emphasis should be placed on further understanding the mechanisms of pathogenicity and of antifungal resistance and tolerance. The development of novel management strategies through the identification of new drug targets and the discovery and optimization of new and existing diagnostics and therapeutics are key to reducing the health burden. | Youbao Zhao Leixin Ye Fujie Zhao Lanyue Zhang Zhenguo Lu Tianxin Chu Siyu Wang Zhanxiang Liu Yukai Sun Min Chen Guojian Liao Chen Ding Yingchun Xu Wanqing Liao Linqi Wang | 2023 | Infectious Diseases of Poverty2023，12，2： | 2 |
| 10 | Fluvial processes and their impact on the finless porpoise's habitat after the Three Gorges Project became operational显示文摘Since the filling of the reservoir of the Three Gorges Project(TGP)dam in the Yangtze River in 2003,erosion downstream from the dam site has affected the finless porpoise’s habitat.In this study,a one-dimensional(1D)fluvial process mathematical model is used to calculate flow and sediment transport in the middle and lower reaches of the Yangtze River,including the finless porpoise’s habitat.By analyzing the calculation results for the water resources,suspended load,and bed materials in the finless porpoise’s habitat after the riverbed deformation,we evaluated the possible impact on this rare Yangtze River aquatic animal.The results show that,with the erosion of riverbed over the next 20 years,the water quantity comprising the habitat will decrease to half of its present amount,and the bed materials will be eroded to coarse grading,such that the reserve will become a gradually disappearing stream.Effective engineering measures should be used to decrease the erosion in the main channel,in case the overall erosion cannot be stemmed and controlled,to ensure an adequate water volume flows into the finless porpoise’s habitat. | FANG HongWei HE GuoJian HAN Dong DUAN JieHui HUANG Lei CHEN MingHong | 2014 | Science China(Technological Sciences)2014，57，5： | 2 |
| 11 | Management of post-stroke neuropsychiatric disorders显示文摘Post-stroke neuropsychiatric(NP) disorders are common and have complex etiologies.Multiple factors such as lesion location, personality characteristics, socioeconomic status, pre-stroke psychiatric history, and family support are the determining factors in most cases. Although depression and anxiety are more common, emotional incontinence and catastrophic reactions are also frequently observed. Post-stroke depression(PSD)has been associated with an increased risk of stroke recurrence. Despite its serious consequences and high prevalence, PSD remains undetected and untreated. Treatment options of NP disorders depend on severity, presentation at the time of diagnosis, and patient cooperation, and include antidepressants, mood stabilizers, exercise therapy, psychotherapy, and even revascularization. The efficient management of NP disorders improves outcomes, quality of life, and survival rates in post-stroke patients. However,very few studies have identified definitive treatment for these patients; therefore, further research is required. | Ahsan Ali Khan Lukui Chen Guilong Zhang Xiaoyuan Guo Guojian Wu Hong Wang Yang You Yuchun Gu Yonggui Yuan | 2016 | Translational Neuroscience and Clinics2016，2，4： | 1 |
| 12 | Extra-Large Seed Germplasms of Brassica Napus Created through Microspore Culture显示文摘 | Chen Wei Zhao Kaiqin Zhang Guojian Zhou Picai Zhao Desheng Qu Guan Luo Yangqing Zu Feng Li Jingfeng Dong Yunsong Wang Jingqiao | 2016 | Journal of Environmental Science and Engineering(A)2016，5，2： | 1 |
| 13 | Spin-flop transition and Zeeman effect of defect-localized bound states in the antiferromagnetic topological insulator MnBi_(2)Te_(4)显示文摘The correlation of surface impurity states with the antiferromagnetic ground states is crucial for understanding the formation of the topological surface state in the antiferromagnetic topological insulators MnBi_(2)Te_(4).By using low-temperature scanning tunneling microscopy and spectroscopy,we observed a localized bound state around the Mn-Bi antisite defect at the Teterminated surface of the antiferromagnetic topological insulator MnBi_(2)Te_(4).When applying a magnetic field perpendicular to the surface(Bz)from–1.5 to 3.0 T,the bound state shifts linearly to a lower energy with increasing Bz,which is attributed to the Zeeman effect.Remarkably,when applying a large range of Bz from–8.0 to 8.0 T,the magnetic field induced reorientation of surface magnetic moments results in an abrupt jump in the local density of states(LDOS),which is characterized by LDOSchange-ratio■quantitatively.Interestingly,two asymmetric critical field,–2.0 and 4.0 T determined by the two peaks in■are observed,which is consistent with simulated results according to a Mills-model,describing a surface spin flop transition(SSF).Our results provide a new flatform for studying the interplay between magnetic order and topological phases in magnetic topological materials. | Guojian Qian Mengzhu Shi Hui Chen Shiyu Zhu Jiawei Hu Zihao Huang Yuan Huang Xian-Hui Chen Hong-Jun Gao | 2023 | Nano Research2023，16，1： | 0 |
| 14 | The Characteristics of Soil Nutrients in Terracing Land under Different Land Use Patterns in Three Gorges Reservoir Area显示文摘In this study,taking the typical terracing land in Wushan County of Chongqing Municipality for example,we study the distribution of soil nutrients in the terracing land under different land use patterns in Three Gorges Reservoir Area. We conduct field survey and sampling on three different land use patterns( cash crop land,food crop land and abandoned land),and do the indoor experimental analysis of soil nutrient indicators. The results indicate that there is significant or very significant impact on soil nutrients under different land use patterns. The content of soil organic matter declines in sequence from abandoned land,food crop land to cash crop land; the content of soil N declines in sequence from cash crop land,abandoned land to food crop land; the content of soil P declines in sequence from cash crop land,food crop land to abandoned land; the content of soil K declines in sequence from abandoned land,cash crop land to food crop land. The result is in close relation to land use patterns,human cultivation activity,land disturbance and application of fertilizer. | Guojian CHEN Chunli LI Juanjuan LI Liangyu LIAO Jie WEI Peixia LI | 2017 | Asian Agricultural Research2017，9，3： | 0 |
| 15 | The Distribution of Relative Light Intensity in a Peach Tree Canopy Affects Fruit Yield and Texture显示文摘Light is crucial to the uniform production of high-quality fruit since it is the driving force for leaf photosynthesis and hence overall plant nutrition.The objective of this study was to evaluate the relationship between the distribution of relative light intensity in the peach tree(Prunus persica)canopy and the yield and texture of peach fruits.The canopy of 7-year-old‘Qiuyan’was divided into cubical volumes and the relative light intensity distribution was measured for each cube,along with yield distribution and fruit textural properties at different growing times.The relative light intensity decreased gradually from outside to inside the canopy and from top to bottom.The yield distribution and the relative light intensity were clearly correlated.The percentage of the canopy receiving<30%relative light intensity was 49.07%in May,56.02%in June,and 58.95%in July,whereas the percentage receiving>80%relative light intensity was 32.72%,17.28%,and 10.96%,respectively.Consistent with this,peaches were found in the upper and middle portions of the canopy,within 1.5-3.0 m of the top.The regression equation showed that fruit texture index correlated significantly with relative light intensity.Relative light intensity is the main factor affecting peach yield and texture and must be above 41.83%for good peach quality.Orchardists should carefully plan summer pruning strategies to adjust the number and spatial distribution of branches accordingly. | Zhaoyuan WANG Qihang TIAN Yong GUO Ruifeng CHANG Guojian LIU Hu CHEN Yonghong LI | 2021 | Agricultural Biotechnology2021，10，3： | 0 |
| 16 | A class of anomalous diffusion epidemic models based on CTRW and distributed delay显示文摘In recent years,the epidemic model with anomalous diffusion has gained popularity in the literature.However,when introducing anomalous diffusion into epidemic models,they frequently lack physical explanation,in contrast to the traditional reaction-diffusion epidemic models.The point of this paper is to guarantee that anomalous diffusion systems on infectious disease spreading remain physically reasonable.Specifically,based on the continuous-time random walk(CTRW),starting from two stochastic processes of the waiting time and the step length,time-fractional space-fractional diffusion,timefractional reaction-diffusion and fractional-order diffusion can all be naturally introduced into the SIR(S:susceptible,I:infectious and R:recovered)epidemic models,respectively.The three models mentioned above can also be applied to create SIR epidemic models with generalized distributed time delays.Distributed time delay systems can also be reduced to existing models,such as the standard SIR model,the fractional infectivity model and others,within the proper bounds.Meanwhile,as an application of the above stochastic modeling method,the physical meaning of anomalous diffusion is also considered by taking the SEIR(E:exposed)epidemic model as an example.Similar methods can be used to build other types of epidemic models,including SIVRS(V:vaccine),SIQRS(Q:quarantined)and others.Finally,this paper describes the transmission of infectious disease in space using the real data of COVID-19. | Zhenzhen Lu Guojian Ren Yangquan Chen Xiangyun Meng Yongguang Yu | 2023 | International Journal of Biomathematics2023，16，7： | 0 |
| 17 | The SlTPL3–SlWUS module regulates multi-locule formation in tomato by modulating auxin and gibberellin levels in the shoot apical meristem显示文摘Malformed fruits depreciate a plant’s market value.In tomato(Solanum lycopersicum),fruit malformation is associated with the multi-locule trait,which involves genes regulating shoot apical meristem(SAM)development.The expression pattern of TOPLESS3(SITPL3)throughout SAM development prompted us to investigate its functional significance via RNA interference(RNAi)and clustered regularly interspaced short palindromic repeats/CRISPR-associated nuclease 9(Cas9)-mediated gene editing.Lower SITPL3 transcript levels resulted in larger fruits with more locules and larger SAMs at the 5 d after germination(DAG5)stage.Differentially expressed genes in the SAM of wild-type(WT)and SITPL3-RNAi plants,identified by transcriptome deep sequencing(RNA-seq),were enriched in the gibberellin(GA)biosynthesis and plant hormone signaling pathways.Moreover,exogenous auxin and paclobutrazol treatments rescued the multi-locule phenotype,indicating that SITPL3 affects SAM size by mediating auxin and GA levels in the SAM.Furthermore,SITPL3 interacted with WUSCHEL(SIWUS),which plays an important role in SAM size maintenance.We conducted RNA-seq and DNA affinity purification followed by sequencing(DAP-seq)analyses to identify the genes regulated by SITPL3 and SIWUS in the SAM and to determine how they regulate SAM size.We detected24 overlapping genes regulated by SITPL3 and SIWUS and harboring an SIWUS-binding motif in their promoters.Furthermore,functional annotation revealed a notable enrichment for functions in auxin transport,auxin signal transduction,and GA biosynthesis.Dual-luciferase assays also revealed that SITPL3 enhances SIWUS-mediated regulation(repression and activation)of SIPIN3 and SIGA2 ox4 transcription,indicating that the SITPL3-SIWUS module regulates SAM size by mediating auxin distribution and GA levels,and perturbations of this module result in enlarged SAM.These results provide novel insights into the molecular mechanism of SAM maintenance and locule formation in tomato and highlight the SITPL3-SIWUS module as a key regulator. | Shiwei Song Binbin Huang Zanlin Pan Qiuxiang Zhong Yinghua Yang Da Chen Lisha Zhu Guojian Hu Mi He Caiyu Wu Mohammed Zouine Riyuan Chen Mondher Bouzayen Yanwei Hao | 2022 | Journal of Integrative Plant Biology2022，64，11： | 0 |
| 18 | Analyses of levels of thyroid hormones and its receptor expression in puerperants and newborns from an e-waste dismantling site显示文摘In this study,the serum levels,including thyr-oid hormones free triiodothyronine(FT3),free thyroxine(FT4),thyroid stimulating hormone(TSH)among the sub-jects from the exposed group(n 548)and the control group(n 545)were detected by immuno radiometric assay(IRMA).The expression levels of TRa1,TRb1,TSHR mRNA in placentas and umbilical cords were detected by fluorescent quantitative real-time PCR(FQ-PCR).The correlations between the thyroid hormone levels in maternal serum and umbilical serum,and between the expression levels of its receptors mRNA in placentas and umbilical cords were determined.We found that the FT4 levels of both maternal serum and umbilical cord serum in the exposed group were lower than those in the control(P<0.05).However,the increased TSH levels in the exposed group had statistically significance com-pared to those in the control group(P<0.05).The TRa1 and TRb1 mRNA levels both in placentas and umbilical cords in the exposed group were lower than those in the control group(P<0.05 and 0.01).How-ever,the TSHR mRNA levels in the exposed group were significantly different compared to those in the control group(P<0.01).The serum FT4 and TSH levels of par-turient women were positively correlated with those of the newborns in both groups(P<0.05 and 0.01).The mRNA levels of TRa1,TRb1 and TSHR in the placentas were positively correlated with those in umbilical cords in both groups(P<0.01).The findings suggest that some envir-onmental pollutants existing in the electronic waste(e-waste)dismantling region may affect the health of local parturient women and newborns,representing changes both in serum levels of thyroid hormones and in mRNA expression of its receptors. | Ying JU Guojian XU Lan CHEN Qi JIANG Liping LI Kedi YANG Xuemin CHEN | 2008 | Frontiers of Medicine2008，2，3： | 0 |
| 19 | Evaluation Methods and Indexes for Ultra-deep Petroleum Reservoir Preservation with Case Studies显示文摘Following consideration of the characteristics of high temperature,high pressure and high in-situ stress in ultradeep sedimentary basins,together with the existence of hydrocarbon phase state transformation,hydrocarbon-water-rock interaction and rock mechanical property transition at those depths,the evaluation index system for hydrocarbon preservation was established.The physical leakage evaluation indexes can be divided into three categories:the dynamic efficiency indexes of micro-sealing,caprock integrity and natural gas diffusion.The chemical loss evaluation indexes can be divided into two categories:the thermochemical sulfate reduction(TSR)index in marine gypsum-bearing carbonate strata and the thermochemical oxidation of hydrocarbons(TOH)index in clastic strata.The slippage angle and overconsolidation ratio(OCR)are the key evaluation indexes in the evaluation of the integrity of shale caprocks.TSR intensity can be quantitatively calculated by use of the Zn PVT state parameter method.The TOH strength can be used to estimate the degree of hydrocarbon chemical loss,based on the TOH-related authigenic calcite cement content or the degree of negativeδ^(13)C of authigenic calcite.For the evaluation of ultra-deep preservation in specific areas,key indexes can be selected according to the local geological conditions,instead of all indexes needing to be evaluated for every scenario. | YUAN Yusong WANG Guojian HU Wenxuan CHEN Shuping WANG Xiaolin ZOU Yu WANG Xinpeng ZHANG Rongqiang HAO Yunqing | 2022 | Acta Geologica Sinica(English Edition)2022，96，4： | 0 |
| 20 | A Study of Soil Nutrients in the Terrace Field Changed from Mountain Slope in Three Gorges Reservoir Region显示文摘In order to accurately grasp the soil fertility in Three Gorges Reservoir Region after changing mountain slope into terrace field,we take Wushan County for example,and use the spatio-temporal substitution method to analyze the soil nutrient status and trend about the terrace field changed from mountain slope under different length of implementation.The results show that the soil fertility is generally low in the study area,and according to the soil nutrient grading standards in the second national land survey,the average content of total nitrogen,available potassium,organic matter and available phosphorus reaches Standard III,Standard III,Standard IV and Standard V,respectively,and the spatial heterogeneity of soil nutrients is small.Compared to the sloping land,the terrace field changed from mountain slope has increasing soil nutrients on the whole with the length of farming.The mean of various indicators about soil nutrients in the terrace field changed from mountain slope for 2 years is lower than in the sloping land,and there is the biggest difference in soil fertility,while the mean of various indicators about soil nutrients in the terrace field changed from mountain slope for 14 years shows a linear upward trend,and the difference in soil fertility decreases. | Guojian CHEN Chunjuan LI Chunli LI Juanjuan LI Jie WEI Hongwei DONG | 2016 | Asian Agricultural Research2016，8，8： | 0 |
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