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Evaluation of sensory function and recovery after replantation of fingertips at ZoneⅠin children

Neural Regeneration Research 2017年第11期12卷 1911-1917页

作者： Zhao-wei Zhu Xiao-yan Zou Yong-jun Huang Jiang-hui Liu Xi-jun Huang Bo He Zeng-tao Wang department of Plastic Surgery the First Affiliated Hospital of Sun Yat-sen University Guangzhou Guangdong ProvinceChina department of Orthopedics and Microsurgery the First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina department of Neurology the First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina department of Orthopedics Guangdong Second Provincial General HospitalGuangzhouGuangdong ProvinceChina department of Emergency the First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina department of Hand and Foot Surgery Provincial Hospital Affiliated to Shandong UniversitylinanShandong ProvinceChina

Sensory function is the most significant criterion when evaluating the prognosis of replanted fingers. Current clinical research has focused on surgical techniques and indications for finger replantation; however, few studies have focused on recovery of finger sensory function af- ter replantation. This study retrospectively assessed data of eight patients who had undergone nine Zone I replantations of the fingertips in the First Affiliated Hospital of Sun Yat-sen University of China from July 2014 to January 2016. Variations in the extent of damage, with the residual vessels or nerves in some fingers being too short or even missing, prevented tension-free suture repair in some patients. Thus, re- pair of four of the nine fingertips included arteriovenous anastomosis, the remaining five undergoing arterial anastomosis during replanta- tion of the amputated fingers. Three patients underwent nerve repair, whereas the remaining six cases did not. Fingertip replantations were successful in all eight patients. Compared with the patients without vascular anastomosis, no obvious atrophy was visible in the fingertips of patients who did undergo vascular anastomosis during replantation and their sensory function did recover. Fingertip replantation pro- vides good sensory function and cosmetic outcomes when good artery and vein anastomoses have been created, even when digital nerves have not been repaired.

关键词： nerve regeneration fingertip replantation neurological function microsurgery hand surgery anatomy plastic surgery blood vessels neural regeneration

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Asymmetric construction of axial and planar chirality with N-heterocyclic carbene (NHC) organocatalysis

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science CHINA-CHEMISTRY 2024年第3期68卷 815-825页

作者： Zhang, Meng Yang, Xiaoqun Peng, Xiaolin Li, Xiangyang Jin, Zhichao Guizhou Univ State Key Lab Green Pesticide Guiyang 550025 Peoples R China

N-heterocyclic carbene (NHC) organocatalytic reactions that have been developed for asymmetric construction of axial and planar chirality are systematically summarized and discussed in this review. The challenges and limitations inherent to this highly reactive research field are highlighted towards the end of the review. Additionally, based on our understanding of the current advancements in NHC organocatalysis, we propose potential future directions for further exploration.

关键词： N-heterocyclic carbene axial chirality planar chirality asymmetric synthesis organocatalysis

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Imprinted Human Serum Albumin with Antioxidant Activity

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Chemical Research in Chinese Universities 2011年第2期27卷 258-263页

作者： SHEN Na YAN Fei GUO Yi LU Shao-wu GONG Ping-sheng XU Ya-wei YAN Gang-lin MU Ying LUO Gui-min Key Laboratory of Molecular Enzymology and Engineering Ministry of Education College of Life Science Jilin University Changchun 130012 P. R. China State Key Laboratory of Industrial Control technology Research Center for Analytical Instrumentation Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310058 P. R. China

In order to create a new mimic of glutathione peroxidase（GPx）, bioimprinting was used to generate gluta-thione（GSH） binding site and chemical modification was used to incorporate catalytic group selenocystine（Sec）. Human serum albumin（HSA） and S-substituted dinitrophenyl glutathione（GSH-S-DNP） were chosen as the imprinted matrix and imprinting template, respectively, to generate a GSH-imprinted protein（GSH-HSA） by bioimprinting. Sec was incorporated into the GSH-HSA by chemical modification to give a new GPx mimic（Se-GSH-HSA）. Se-GSH-HSA displayed considerably higher GPx activity than non-printed HSA（Se-HSA）. The enzymic properties and kinetics of Se-GSH-HSA were studied. Moreover, Se-GSH-HSA was confirmed to have stronger antioxidant ability to protect mitochondria against oxidative damage with ferrous sulfate/ascorbate-induced mitochondria damage model, indicating that Se-GSH-HSA has potential application in medicine.

关键词： Antioxidant Enzyme mimic Glutathione peroxidase Molecular imprinting

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Wavelet-denoising technique in near-infrared methane detection based on tunable diode laser absorption spectroscopy

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Optoelectronics Letters 2014年第4期10卷 299-303页

作者：高宗丽叶玮琳郑传涛王一丁 State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University College of Engineering Shantou University

A novel wavelet denoising(WD) assisted wavelength modulation technique is proposed for improving near-infrared detection performance on methane concentration based on tunable diode laser absorption spectroscopy(TDLAS). Due to the ability of multi-level analytical resolutions both in time- and frequency-domains, the noise contained in the differential signal is greatly suppressed. Sensor mechanical part, optical part and electrical part are integrated, and a portable detection device is finally developed. Theory and formulations of the WD-assisted wavelength modulation technique are presented, and experiments are carried out to prove the normal function on the extraction of the second harmonic(2f) signal from severely polluted differential signal by using the technique. By virtue of WD's suppression on noises, the sensing characteristics on CH4 concentration are improved, and the limit of detection(LOD) is decreased from 4×10-6(without WD processing) to 10-6. The proposed technique can also be used for the measurement on the concentration of other gases with corresponding near-infrared distributed feedback lasers.

关键词：可调谐二极管激光吸收光谱技术检测甲烷浓度小波消噪近红外半导体激光分布反馈激光器基础

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GWAS unravels acid phosphatase ACP2 as a photosynthesis regulator under phosphate starvation conditions through modulating serine metabolism in rice

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Plant Communications 2024年第7期5卷 106-119页

作者： Sushuang Liu Zhan Xu Jemaa Essemine Yanmin Liu Chundong Liu Feixue Zhang Zubair Iqbal Mingnan Qu Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology Agricultural College of Yangzhou UniversityYangzhou 225009China department of Life sciences and Health Huzhou CollegeHuzhou 313000China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Institute of Crop Huzhou Academy of Agricultural SciencesHuzhou 313000China These authors contributed equally to this article

Inorganic phosphorus(Pi)deficiency significantly impacts plant growth,development,and photosynthetic *** study evaluated 206 rice accessions from a MiniCore population under both Pi-sufficient(Pi^(+))and Pi-starvation(Pi^(-))conditions in the field to assess photosynthetic phosphorus use efficiency(PPUE),defined as the ratio of A_(sat)^(Pi^(-))to A_(sat)^(Pi^(+)).A genome-wide association study and differential gene expression analyses identified an acid phosphatase gene(ACP2)that responds strongly to phosphate *** and knockout of ACP2 led to a 67%increase and 32%decrease in PPUE,respectively,compared with wild *** of an elite allele A,by substituting the v5 SNP G with A,resulted in an 18%increase in PPUE in gene-edited ACP2 rice *** phosphate-responsive gene PHR2 was found to transcriptionally activate ACP2 in parallel with PHR2 overexpression,resulting in an 11%increase in *** assays indicated that ACP2 primarily catalyzes the hydrolysis of phosphoethanolamine and *** addition,serine levels increased significantly in the ACP2^(vBG)overexpression line,along with a concomitant decrease in the expression of all nine genes involved in the photorespiratory *** of serine enhanced PPUE and reduced photorespiration rates in ACP2 mutants under Pi-starvation *** deduce that ACP2 plays a crucial role in promoting photosynthesis adaptation to Pi starvation by regulating serine metabolism in rice.

关键词： phosphate starvation GWAS photosynthetic adaption photosynthetic phosphate use efficiency genetic variation SNP rice

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Photoluminescence properties and thermal stability of Eu^(3+)-activated La_(7)Ta_(3)W_(4)O_(30) red-emitting phosphors for near-UV-excited w-LEDs

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Journal of Rare Earths 2021年第8期39卷 905-912页

作者： Yu Ren Bin Deng Ting Liang Shuang Shu Junlan Guo Shoucheng Zhao Ruijin Yu College of Chemistry&Pharmacy Northwest A&F UniversityYangling 712100China College of Chemistry&Biology and Environmental Engineering Xiangnan UniversityChenzhou 423043China Hunan Provincial Key Laboratory o/Xiangnan Rare-Precious Metals Compounds Research and Application Xiangtan UniversityChenzhou 423043China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China

Novel trivalent europium(Eu^(3+))-activated La_(7)Ta_(3)W_(4)O_(30):xEu^(3+)(x=0.5 mol%-40 mol%) red-emitting phosphors were synthesized by means of a high-temperature solid-state *** structure,morphology,photoluminescence,thermal-stability properties,lifetime,and color-rendering of the prepared phosphors were investigated in *** La_(7)Ta_(3)W_(4)O_(30):Eu^(3+) phosphors show five emission peaks under near-ultraviolet(n-UV) at 397 nm,and these peaks are ascribed to the transitions of ^(5)D0-^(7)Fj(j=0,1,2,3 and 4) by Eu^(3+) *** optimal doping concentration of Eu^(3+) is 20 mol%,and the critical distance of the energy transfer between the Eu^(3+)ions was calculated to be 1.768 *** quenching temperature(T_(0.5)) of La_(7)Ta_(3)W_(4)O_(30):20 mol%Eu^(3+) is about 440 *** quantum yield(QY) was measured to be 85.85%.The fabricated white-light-emitting diodes(w-LEDs) possess high color-rendering index(R_(a)) of 90,and high correlated color temperature(CCT) of 5810 K,*** Commission Internationale de L’Eclairage(CIE) coordinates are(0.311,0.322).Therefore,the prepared phosphor has a promising application for w-LEDs.

关键词： Luminescence Phosphor Tungstate La_(7)Ta_(3)W_(4)O_(30) Rare earths

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α-Glucosidase inhibitors isolated from medicinal plants

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Food science and Human Wellness 2014年第3期3卷 136-174页

作者： Zhenhua Yin Wei Zhang Fajin Feng Yong Zhang Wenyi Kang Huanghe science and technology College Zhengzhou 450063China College of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China

Objective:α-Glucosidase inhibitors can be used as a new class of antidiabetic *** competitively inhibiting glycosidase activity,these inhibitors help to prevent the fast breakdown of sugars and thereby control the blood sugar *** study provides a wealth of information aboutα-glucosidase inhibitors isolated from medicinal plants;this knowledge will be useful in finding more potent antidiabetic candidates from the natural resources for the clinical development of antidiabetic ***:411 compounds exhibitingα-glucosidase inhibitory activity were summarized and isolated them from medicinal *** compound classes isolated include:terpenes(61)from 14 genus,alkaloids(37)from 11 genus,quinines(49)from 4 genus,flavonoids(103)from 24 genus,phenols(37)from 9 genus,phenylpropanoids(73)from 20 genus,sterides(8)from 5 genus,and other types of compounds(43).Conclusion:Compounds withα-glucosidase inhibitory activity are abundant in nature and can be obtained from several *** have highα-glucosidase inhibitory potential,and can be clinically developed for treating diabetes mellitus.

关键词： α-Glucosidase inhibitor Inhibitory activity Medicinal plants

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Microstructures and mechanical properties of a commercial Mg-Al-Zn-Mn alloy with various hot-extrusion processes

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Rare Metals 2024年第3期43卷 1329-1336页

作者： He Ma Fan-Zhi Meng Qiang Yang Ze-Feng Xie Yuan-Ding Huang Xin Qiu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Materials science and Engineering Changchun University of Science and TechnologyChangchun130022China MagIC-Magnesium Innovation Center Helmholtz-Zentrum Geesthacht21502GeesthachtGermany Engineering Research Center of Optoelectronic Functional Materials Ministry of EducationChangchun University of Science and TechnologyChangchun130022China

Mg-Al-Zn-Mn(AZ)system alloys have become widely used due to their good castability,excellent formability and outstanding corrosion resistance[1-6].However,their strength is still much lower than that of traditional Mg... 详细信息

关键词： alloys alloy corrosion

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Coating of microbially produced calcium carbonate onto stone materials

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science China(Technological sciences) 2015年第2期58卷 266-272页

作者： ZHU Wen Kun MU Tao ZHANG You Kui DUAN Tao LUO Xue Gang Engineering Research Center of Biomass Materials Ministry of Education Southwest University of Science and Technology China Academy of Engineering Physics Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and Technology and Research Center of Laser FusionCAEP

The coatings of microorganism-induced calcium carbonate onto the stone surface carried out by using both of the immersion method and coating method were investigated. Various analysis and testing techniques such as scanning electron micrograph （SEM） and X-ray diffraction （XRD） were used to characterize the deposited mineral layer. The adhesive property, acid re- sistance, frost resistance, light and aging resistance, water adsorption and permeability were investigated in detail. The results showed that both immersion method and coating method could produce calcium carbonate granules with sizes ranging from 1 to 10 pm and form a layer of dense mineralization membrane which is about 50 to 100 pm thick. Immersion method was more efficient than coating method. The large cohesive force between calcium carbonate layer and stone materials could improve the acid rain resistance as well as excellent heat tolerance, frost resistance and light aging resistance. The coating process could not only help the stone materials maintain its original permeability with the aid of calcium carbonate layers but also improve the penetration resistance significantly. Therefore, this type of technology shows a great potential in the protection of stone relics.

关键词： microorganism microbially induced deposited-layer stone materials

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Influence of lanthanum doping on performance of LiFePO_4 cathode materials for lithium-ion batteries

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Journal of Rare Earths 2010年第3期28卷 439-442页

作者：罗绍华田勇李辉史科捷唐子龙张中太 department of Materials science and Engineering Northeastern University at Qinhuangdao Branch State Key Laboratory of New Ceramics and Fine Processing Department of Materials Science and EngineeringTsinghua University

Using solid-state synthesis method,a series of samples of lanthanum doped Li1-xLaxFePO4(x=0.0025,0.005,0.0075,0.01) were *** cathode structural and electrochemical properties were investigated using X-ray diffractometry(XRD),scanning electron microscopy(SEM),electrochemical impedance spectroscopy(EIS) and charge/discharge *** material with single-phase could be *** reversible capacity could be drastically improved by the introduction of *** optimum cells with Li0.99La0....

关键词： lithium iron phosphate lanthanum doping lithium-ion battery rare earths

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