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Effect of increasing Arctic river runoff on the Atlantic meridional overturning circulation:a model study

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Acta Oceanologica Sinica 2017年第8期36卷 59-65页

作者： SHU qi qiao Fangli SONG Zhenya XIAO Bin The First Institute of Oceanography State Oceanic AdministrationQingdao 266061China Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Key Laboratory of Marine Science and Numerical Modeling State Oceanic AdministrationQingdao 266061China

An increasing amount of freshwater has been observed to enter the Arctic Ocean from the six largest Eurasian rivers over the past several decades. The increasing trend is projected to continue in the twenty-first century according to Coupled Model Intercomparison Project Phase 5 （CMIP5） coupled models. The present study found that water flux from rivers to the Arctic Ocean at the end of the century will be 1.4 times that in 1950 according to CMIP5 projection results under Representative Concentration Pathway 8.5. The effect of increasing Arctic river runoff on the Atlantic meridional overturning circulation （AMOC） was investigated using an ocean-ice coupled model. Results obtained from two numerical experiments show that 100, 150 and 200 years after the start of an increase in the Arctic river runoff at a rate of 0.22%/a, the AMOC will weaken by 0.6 （3%）, 1.2 （7%） and 1.8 （11%） Sv. AMOC weakening is mainly caused by freshwater transported from increasing Arctic river runoff inhibiting the formation of North Atlantic Deep Water （NADW）. As the AMOC weakens, the deep seawater age will become older throughout the Atlantic Basin owing to the increasing of Arctic runoff.

关键词： climate change Arctic river runoff Atlantic meridional overturning circulation

Strain and stress variations in the human amniotic membrane and fresh corpse autologous sciatic nerve anastomosis in a model of sciatic nerve injury

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Neural Regeneration Research 2012年第23期7卷 1779-1785页

作者： Chuangang Peng qiao Zhang qi Yang qingsan Zhu Department of Orthopedics China-Japan Friendship HospitalJilin UniversityChangchun 130029Jilin ProvinceChina Department of Orthopedics the First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina

A 10-mm long sciatic nerve injury model was established in fresh normal Chinese patient cadavers. Amniotic membrane was harvested from healthy maternal placentas and was prepared into multilayered,coiled,tubular *** nerve injury models were respectively anastomosed using the autologous cadaveric sciatic nerve and human amniotic *** test results showed that maximal loading,maximal displacement,maximal stress,and maximal strain of sciatic nerve injury models anastomosed with human amniotic membrane were greater than those in the autologous nerve anastomosis *** strain-stress curves of the human amniotic membrane and sciatic nerves indicated exponential change at the first phase,which became elastic deformation curves at the second and third phases,and displayed plastic deformation curves at the fourth phase,at which point the specimens lost their bearing *** findings suggested that human amniotic membranes and autologous sciatic nerves exhibit similar stress-strain curves, good elastic properties,and certain strain and stress capabilities in anastomosis of the injured sciatic nerve.

关键词： sciatic nerve injury model autologous nerve amniotic membrane anastomosis tension mechanical properties neural regeneration

Exploring the Abnormal Brain Regions and Abnormal Functional Connections in SZ by Multiple Hypothesis Testing Technique

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Computer Modeling in Engineering & Sciences 2020年第10期125卷 215-237页

作者： Lan Yang Shun qi Chen qiao Yanmei Kang School of Mathematics and Statistics Xi’an Jiaotong UniversityXi’an710049China Department of Radiology The First Affiliated Hospital of Medical CollegeXi’an Jiaotong UniversityXi’an710061China Department of Radiology Xijing HospitalFourth Military Medical UniversityXi’an710032China

Schizophrenia(SZ)is one of the most common mental *** main characteristics are abnormal social behavior and inability to correctly understand real *** recent years,the magnetic resonance imaging(MRI)technique has been popularly utilized to study ***,it is still a great challenge to reveal the essential information contained in the MRI *** this paper,we proposed a biomarker selection approach based on the multiple hypothesis testing techniques to explore the difference between SZ and healthy controls by using both functional and structural MRI data,in which biomarkers represent both abnormal brain functional connectivity and abnormal brain *** implementing the biomarker selection approach,six abnormal brain regions and twenty-three abnormal functional connectivity in the brains of SZ are *** is discovered that compared with healthy controls,the significantly reduced gray matter volumes are mainly distributed in the limbic lobe and the basal ganglia,and the significantly increased gray matter volumes are distributed in the frontal ***,it is revealed that the significantly strengthened connections are those between the middle frontal gyrus and the superior occipital gyrus,the superior occipital gyrus and the middle occipital gyrus as well as the middle occipital gyrus and the fusiform gyrus,and the rest connections are significantly weakened.

关键词： Multiple hypothesis testing schizophrenia magnetic resonance imaging abnormal brain regions abnormal functional connectivity

Functionally Oriented Tumor Microenvironment Responsive Polymeric Nanoassembly:Engineering and Applications

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Chinese Journal of Polymer Science 2018年第3期36卷 273-287页

作者： Wen-ming Zhang Jian Zhang Zhu qiao Jun Yin Department of Polymer Science and Engineering School of Chemistry and Chemical EngineeringHefei University of Technology and Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei 230009China

The excellent drug encapsulation,prolonged in vivo circulation time,enhanced pharmacokinetics,and reduced adverse effects make the polymeric assemblies ideal carriers in nanomedicine,and become an emerging research field with rapid *** vivo,the polymer nanoassemblies will experience five steps,including circulation in the blood,accumulation in the tumoral site,penetration into the deep tumor tissue to reach cancer cells,internalization into cancer cells,and intracellular drug ***,although tremendous efforts have been made to the material design,currently available carriers still have difficulties in fulfilling all of the ***,the long-standing dilemma of the synchronized stability and permeability of vesicles is still a big challenge,which confused researchers for a long *** feature article tbcuses on the recent progress of single-or multi-stimuli triggered theranostic platforms,and the extracellularly reengineered shell-sheddable polymeric nanocarriers are systematically *** perspectives for future developments in the nanocarriers functioned with artificial helical polymers(the potential cell-penetrating peptides mimics)are also *** speculate that this feature article can fit the interesting of diverse readers and a guideline for the design of next generation of drug nanocarriers.

关键词： Block copolymers Tumor microenvironment responsive Self-assembly Theranostic Nanomedicine

A comparison of two global ocean-ice coupled models with different horizontal resolutions

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Acta Oceanologica Sinica 2013年第8期32卷 1-11页

作者： SHU qi qiao Fangli SONG Zhenya YIN Xunqiang College of Physical and Environmental Oceanography Ocean University of China First Institute of Oceanography State Oceanic Administration Key Laboratory of Marine Science and Numerical Modeling State Oceanic Administration

A global eddy-permitting ocean-ice coupled model with a horizontal resolution of 0.25° by 0.25° is estab- lished on the basis of Modular Ocean Model version 4 （MOM4） and Sea Ice Simulator （SIS）. Simulation results are compared with those of an intermediate resolution ocean-ice coupled model with a horizontal resolution of about 1° by 1°. The results show that the simulated ocean temperature, ocean current and sea ice concentration from the eddy-permitting model are better than those from the intermediate resolu- tion model. However, both the two models have the common problem of ocean general circulation models （OGCMs） that the majority of the simulated summer sea surface temperature （SST） is too warm while the majority of the simulated subsurface summer temperature is too cold. Further numerical experiments show that this problem can be alleviated by incorporating the non-breaking surface wave-induced vertical mixing into the vertical mixing scheme for both eddy-permitting and intermediate resolution models.

关键词： eddy-permitting model intermediate resolution model non-breaking surface wave-induced vertical mixing

Orientational Isomerism and Its Reactivity of a Main Group Sandwich Anion[Ge_(9)-In-Ge_(9)]^(5-)

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Chinese Journal of Chemistry 2023年第19期41卷 2432-2438页

作者： Hong-Lei Xu Lei qiao Zhong ming Sun State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab of Rare Earth Materials and ApplicationsSchool of Material Science and EngineeringNankai UniversityTianjin 300350China

Two isomers of a sandwich-type anion [Ge_(9)-In-Ge_(9)]^(5–) were synthesized by controlling the chelating agents (2,2,2-crypt/18-C-6). Further reactions with early/late transition metal complexes, Mo(CO)_(6) and Ni(COD)_(2), respectively, yielded two new types of inorganic sandwich derivatives: a half-sandwich cluster [Ge_(9)-In-Mo(CO)_(5)]^(3–) with a low-valence In(I) center and an unsymmetrical sandwich-type cluster {[(Ni@Ge_(9))In(Ni_(0.648)@Ge_(9))]}^(5–) due to the insertion of Ni atoms, respectively. The isolation of these new derivatives demonstrates the reactivity of sandwich-type [Ge_(9)-In-Ge_(9)]^(5–) acting as the precursor, which provides some enlightenment for constructing new inorganic sandwich compounds.

关键词： Sandwich complex Cluster compounds Main group elements Germanium Indium

Mitochondrial integrity in neuronal injury and repair

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Neural Regeneration Research 2021年第4期16卷 674-675页

作者： qi Han Xiao-ming Xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research Institute Department of Neurological Surgery Indiana University School of MedicineIndianapolisINUSA

The mitochondrion is the powerhouse of a *** the principal subcellular organelles that mediate adenosine triphosphate(ATP)production and calcium buffering,mitochondria actively distribute to areas of high energy demand and calcium *** highly polarized nerve cells in the central nervous system(CNS),which have unparalleled size and complexity and long-projection axons,are cells with high-energy *** are regionally organized within these neurons,with higher accumulations in the soma,the hillock,the nodes of Ranvier,and the axon *** the synaptic region,mitochondria regulate calcium and ATP levels,thereby maintaining synaptic transmission and *** in mitochondrial dynamics can cause deficits in neuronal transport,transmission,and metabolism(Misgeld and Schwarz,2017).

关键词： thereby metabolism distribute

半导体量子点分子-腔光机械耦合系统中光学双稳及多稳态的形成及调控

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原子与分子物理学报 2025年第5期42卷 115-122页

作者：曾莹任波徐名琪杨红佘彦超吉首大学物理与机电工程学院吉首416000 铜仁学院物理与电子工程系铜仁554300

本研究探讨了外部磁场对半导体量子点分子与腔光机械耦合系统中光学双稳态行为的影响.研究结果显示,外部磁场、量子点之间的隧穿耦合以及探测光单光子的失谐可以有效地调控系统的光学双稳态.在弱隧穿和弱磁场条件下,系统的光学双稳态阈... 详细信息

本研究探讨了外部磁场对半导体量子点分子与腔光机械耦合系统中光学双稳态行为的影响.研究结果显示,外部磁场、量子点之间的隧穿耦合以及探测光单光子的失谐可以有效地调控系统的光学双稳态.在弱隧穿和弱磁场条件下,系统的光学双稳态阈值和磁滞回线宽度随着外部磁场和点间隧穿耦合强度的增加而增大.随着磁场强度和隧穿耦合强度的进一步增加,系统的双稳态将演变为多稳态.有趣的是,在强隧穿和强磁场作用下,系统的光学双稳态阈值和磁滞回线宽度随着外部磁场和点间隧穿耦合强度的增加而减小.这种对耦合腔光机械系统中光学双稳态的灵活调控将在可控光开关方面具有潜在的广泛应用前景.

关键词：双稳态多稳态点间隧穿耦合光力耦合

A High-Resolution Modeling Study of the 19 June 2002 Convective Initiation Case during IHOP 2002:Localized Forcing by Horizontal Convective Rolls

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Advances in Atmospheric Sciences 2018年第10期35卷 1243-1253页

作者： qi-Wei WANG ming XUE Key Laboratory of Mesoscale Severe Weather and School of Atmospheric Sciences Nanjing University Nanjing 210023China Center for Analysis and Prediction of Storms and School of Meteorology University of Oklahoma Norman Oklahoma 73072USA

The initiation processes of one of the initial convective cells near and on the east side of a dryline on 19 June 2002 during the IHOP 2002 field experiment in the central United States is analyzed in detail based on a high-resolution numerical simulation. Prominent horizontal convective rolls and associated near-surface moisture convergence bands [called roll convergence bands(RCBs) here] develop within the convective boundary layer(CBL) due to surface heating, in the hours leading to convective initiation(CI). The RCBs east of the dryline are advected toward the primary dryline convergence boundary(PDCB) by the southerly moist flow as the CBL deepens with time. Backward trajectories of air parcels forming the initial precipitating updraft of the convective cell are found to primarily originate at about 1–1.5 km above ground, within the upper portion of the shallower CBL earlier on. The representative air parcel is found to follow and stay on top of a surface RCB as the RCB moves toward the PDCB, but the RCB forcing alone is not enough to initiate convection. As this RCB gets close to the PDCB, it moves into a zone of mesoscale convergence and a deeper CBL that exhibits an upward moisture bulge associated with the PDCB. The combined upward forcing of the RCB and the mesoscale PDCB convergence quickly lifts the representative air parcel above its level of free convection to initiate convection. A conceptual model summarizing the CI processes is proposed.

关键词： convective initiation dryline localized forcing horizontal convective rolls