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| 1 | Genetic variation and selection of introduced provenances of Siberian Pine(Pinus sibirica) in frigid regions of the Greater Xing'an Range,Northeast China显示文摘Siberian Pine(Pinus sibirica) is an ecologically and economically important species in pristine forests throughout northern Russia. Four provenances of P. sibirica were introduced from Mongolia and Russia to the Greater Xing'an Range(the Daxing'anling), northeast China in 1993. The aim of this research was to study genetic variation and selection of the introduced four Pinus sibirica provenances. Heights(H), basal diameters(BD), survival rates(SR) and crown lengths(CL) of different families were measured as primary outcomes in different growth years. Results of data analyses demonstrated high coefficients of phenotypic variation(PCV) and heritability(H2) for H, BD and CL at 18 years after introduction. PCV and H2 increased with age. Correlations of growth traits between any two growth years were all significantly positive, but the correlation coefficient was smaller when the growth year interval was larger. Correlations between H and the original environment factors decreased gradually, indicating that with long-term subsistence in the new environment, the influence of the source environment declined. Colligation of multiple traits to estimate provenances showed that Novosibirsk, Tomsk, and Altai Mountains had higher survival rates and biomass, and proved more suitable for introduction and plantation in the Greater Xing'an Range in China. | Xiyang Zhao Cheng Wang Shuchun Li Wei Hou Shiqing Zhang Guijie Han Deng Pan Ping Wang Yufei Cheng Guifeng Liu | 2014 | Journal of Forestry Research2014,25,3: | 6 |
| 2 | Transition-Metal-Free TEMPO Catalyzed Aerobic Oxidation of Alcohols to Carbonyls Using an Efficient Br2 Equivalent under Mild Conditions显示文摘有效 transition-metal-free 催化系统为白酒的氧气的氧化被开发。使用溴化物使与臬化合联合, H2SO4,和 NaNO2 的催化数量,和面对空气的 2,2,6,6-tetramethylpiperidine N-oxyl 基(速度) ,各种各样的白酒能被变换成相应的醛或酉同类在对在温和条件下面的优秀孤立的收益好。 | Jie Zhang Zengqiang Jiang Dan Zhao Guozhen He Shuangli Zhou Shiqing Han | 2013 | Chinese Journal of Chemistry2013,31,6: | 4 |
| 3 | Similar or different: the same Spiro-core but different alkyl chains with apparently improved device performance of perovskite solar cells显示文摘By intelligently utilizing the odd-even effect existing in the melting points of alkanes as presented in the basic textbook of Organic Chemistry, different alkoxy groups were introduced to modify the structure of commercial Spiro-OMeTAD to give new Spiro derivatives of Spiro-OEtTAD, Spiro-OPrTAD, Spiro-OiPrTAD and Spiro-OBuTAD, with the aim to adjust the molecular packing status in perovskite solar cells as hole transporting compounds. Excitedly, with the introduction of ethoxy groups instead of the methoxy ones in Spiro-OMeTAD, Spiro-OEtTAD-based perovskite solar cells demonstrated the highest device performance of 20.16%, higher than that of Spiro-OMeTAD(18.64%). | Fan Liu Shiqing Bi Xiaorui Wang Xuanye Leng Mengmeng Han Baoda Xue Qianqian Li Huiqiong Zhou Zhen Li | 2019 | Science China Chemistry2019,62,6: | 2 |
| 4 | Synthesis of (R)-cyanohydrins by crude (R)-oxynitrilasecatalyzed reactions in microaqueous medium 显示文摘 | Han Shiqing Lin Guoqiang Li Zuyi | 1998 | Tetrahedron: Asymmetry1998,9,11: | 1 |
| 5 | Synthesis of (R)- cyanohydrins by crude (R)-oxynitrilasecatalyzed reactions in micro-aqueous medium显示文摘 | Shiqing Han Guoqiang Lin Zuyi Li | 1998 | Tetrahedron: Asymmetry1998,9,11: | 1 |
| 6 | Enzymatic synthesis of (R)-cyanohydrins by three (R)-Oxynitrilase Sources in Micro-aqueous Organic Medium显示文摘 | Guoqiang lin Shiqing Han Zuyi Li | 1999 | Tetrahedron1999,55,12: | 1 |
| 7 | (R)- Oxynitrilase-catalyzed hydrocyanation: the first synthesis of optically active fluorinated mandelonitriles显示文摘 | Shiqing Han Peiran Chen Guoqiang Lin | 2001 | Tetrahedron: Asymmetry2001,12,6: | 1 |
| 8 | Effect of characteristics of calcium-based sorbents on the sulfation kinetics显示文摘 | Kuihua Han Chunmei Lu Shiqing Cheng Gaiju Zhao Yongzheng Wang Jianli Zhao | 2005 | Fuel2005,,14: | 1 |
| 9 | Copper(I)-Catalyzed Intramolecular Direct C-Arylation of Azoles with Aryl Bromides显示文摘存取 5H-imidazo 的一条简明线路[2,1-a ] 由铜(I) 的 isoindole heterofused 混合物催化与 azoles 非激活的芳基溴化物联合的 intramolecular 被报导。与是的 CuI 催化剂, 1,10-phenanthroline 作为是的 ligand,和 K3PO4 基于, 1-(2-bromobenzyl ) 的反应在 DMF/o-xylene 的 -1H-imidazoles (1:1, V : V ) 在 145 点?? | Yuan Huang Wei Chen Dan Zhao Chen Chen Huiqing Yin Likang Zheng Ming Jin Shiqing Han | 2013 | Chinese Journal of Chemistry2013,31,8: | 0 |
| 10 | Human umbilical cord mesenchymal stem cell-derived exosomes loaded into a composite conduit promote functional recovery after peripheral nerve injury in rats显示文摘Complete transverse injury of peripheral nerves is challenging to treat.Exosomes secreted by human umbilical cord mesenchymal stem cells are considered to play an important role in intercellular communication and regulate tissue regeneration.In previous studies,a collagen/hyaluronic acid sponge was shown to provide a suitable regeneration environment for Schwann cell proliferation and to promote axonal regeneration.This three-dimensional(3D)composite conduit contains a collagen/hyaluronic acid inner sponge enclosed in an electrospun hollow poly(lactic-co-glycolic acid)tube.However,whether there is a synergy between the 3D composite conduit and exosomes in the repair of peripheral nerve injury remains unknown.In this study,we tested a comprehensive strategy for repairing long-gap(10 mm)peripheral nerve injury that combined the 3D composite conduit with human umbilical cord mesenchymal stem cell-derived exosomes.Repair effectiveness was evaluated by sciatic functional index,sciatic nerve compound muscle action potential recording,recovery of muscle mass,measuring the cross-sectional area of the muscle fiber,Masson trichrome staining,and transmission electron microscopy of the regenerated nerve in rats.The results showed that transplantation of the 3D composite conduit loaded with human umbilical cord mesenchymal stem cell-derived exosomes promoted peripheral nerve regeneration and restoration of motor function,similar to autograft transplantation.More CD31-positive endothelial cells were observed in the regenerated nerve after transplantation of the loaded conduit than after transplantation of the conduit without exosomes,which may have contributed to the observed increase in axon regeneration and distal nerve reconnection.Therefore,the use of a 3D composite conduit loaded with human umbilical cord mesenchymal stem cell-derived exosomes represents a promising cell-free therapeutic option for the treatment of peripheral nerve injury. | Haoshuai Tang Junjin Li Hongda Wang Jie Ren Han Ding Jun Shang Min Wang Zhijian Wei Shiqing Feng | 2024 | Neural Regeneration Research2024,19,4: | 0 |
| 11 | Reconfigurable memristor based on SrTiO_(3) thin-film for neuromorphic computing显示文摘Neuromorphic computing aims to achieve artificial intelligence by mimicking the mechanisms of biological neurons and synapses that make up the human brain.However,the possibility of using one reconfigurable memristor as both artificial neuron and synapse still requires intensive research in detail.In this work,Ag/SrTiO_(3)(STO)/Pt memristor with low operating voltage is manufactured and reconfigurable as both neuron and synapse for neuromorphic computing chip.By modulating the compliance current,two types of resistance switching,volatile and nonvolatile,can be obtained in amorphous STO thin film.This is attributed to the manipulation of the Ag conductive filament.Furthermore,through regulating electrical pulses and designing bionic circuits,the neuronal functions of leaky integrate and fire,as well as synaptic biomimicry with spike-timing-dependent plasticity and paired-pulse facilitation neural regulation,are successfully realized.This study shows that the reconfigurable devices based on STO thin film are promising for the application of neuromorphic computing systems. | Xiaobing Yan Xu Han Ziliang Fang Zhen Zhao Zixuan Zhang Jiameng Sun Yiduo Shao Yinxing Zhang Lulu Wang Shiqing Sun Zhenqiang Guo Xiaotong Jia Yupeng Zhang Zhiyuan Guan Tuo Shi | 2023 | Frontiers of physics2023,18,6: | 0 |
| 12 | PINK1-mediated Drp1^(S616) phosphorylation modulates synaptic development and plasticity via promoting mitochondrial fission显示文摘Dynamic change of mitochondrial morphology and distribution along neuronal branches are essential for neural circuitry formation and synaptic efficacy.However,the underlying mechanism remains elusive.We show here that Pink1 knockout(KO)mice display defective dendritic spine maturation,reduced axonal synaptic vesicles,abnormal synaptic connection,and attenuated long-term synaptic potentiation(LTP).Drp1 activation via ^(S616) phosphorylation rescues deficits of spine maturation in Pink1 KO neurons. | Qingtao Gao Runyi Tian Hailong Han Jesse Slone Caifang Wang Xiao Ke Tongmei Zhang Xiangyu Li Yuhong He Panlin Liao Fang Wang Ye Chen Shiqing Fu Kexuan Zhang Fangfang Zeng Yingxuan Yang Zhuo Li Jieqiong Tan Jiada Li Youming Lu Taosheng Huang Zhonghua Hu Zhuohua Zhang | 2022 | Signal Transduction and Targeted Therapy2022,7,5: | 0 |