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Coupling Co_(2)P nanoparticles onto N,P-doped biomass-derived carbon as efficient electrocatalysts for flexible Zn-air batteries

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Rare Metals 2024年第10期43卷 4982-4991页

作者： Shu-Qi Li Kang Sun yan-yan liu Shu-Ling liu Jing-Jing Zhou Wen-Bo Zhang Yi-Hang Lu Xiang-Meng Chen Xiao-Peng Wang Bao-Jun Li Jian-Chun Jiang College of Science Henan Agricultural UniversityZhengzhou 450002China Department of Chemistry Tsinghua UniversityBeijing 100084China College of Chemistry Zhengzhou UniversityZhengzhou 450001China Institute of Chemical Industry of Forest Products National Engineering Lab for Biomass Chemical UtilizationKey and Open Lab on Forest Chemical EngineeringChinese Academy of ForestryState Forestry AdministrationNanjing 210042China

Catalysts for oxygen conversion play an important role in energy storage and conversion technologies such as metal-air *** highly active stable,and low-cost catalysts is critical for further implementation of the above ***,an efficien oxygen electrocatalyst with Co_(2)P nanoparticles(NPs)coupling onto N,P-doped porous carbon nanosheets(Co_(2)P@NPAC)derived from cotton stalk is successfully designed and prepared via activation,hydrothermal treatment,and pyrolysis *** excellent properties of electrical conductivity,mass transfer,and synergistic integration between Co_(2)P and N,P-doped carbon endow Co_(2)P@NPAC composite with superior oxygen reduction reaction/oxygen evolution reaction(ORR/OER)***_(2)P@NPAC catalyst achieves ORR activity with half-wave potential of 0.85 V and high OER activity with overpotential of 261 mV at 10 mA·cm^(-2).The flexible Zn-air batteries(ZABs)based on Co_(2)P@NPAC catalyst revea outstanding performances with a high open-circuit voltage(1.38 V),a peak power density of(75 mW·cm^(-2)),and a low charge-discharge voltage gap(0.74 V,~200 cycles)The flexible ZABs express the stable discharge-charge voltage gap at various bending *** work provides interesting inspiration for the ingenious design of efficien carbon electrocatalysts from biomass with potential application of energy storage and conversion devices.

关键词： Cotton stalk N P-doped activated carbon Oxygen reduction reaction Flexible Zn-air batteries

Prognostic significance of preoperative fibrinogen in patients with colon cancer

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World Journal of Gastroenterology 2014年第26期20卷 8583-8591页

作者： Zhen-Qiang Sun Xiao-Na Han Hai-Jiang Wang Yong Tang Ze-Liang Zhao yan-Li Qu Rui-Wei Xu yan-yan liu Xian-Bo Yu Department of Gastrointestinal Surgery Affiliated Tumor HospitalXinjiang Medical University Research Laboratory of Disease Genomics Cancer Research InstituteCentral South University Department of Digestive Oncology Affiliated Tumor HospitalXinjiang Medical University Infection and Statistical Office Affiliated Tumor HospitalXinjiang Medical University Clinical Pharmacy Tengzhou Central People’s Hospital

AIM: To investigate the prognostic significance of preoperative fibrinogen levels in colon cancer patients.

关键词： Fibrinogen Colon cancer Clinicopathological parameters Relationship Prognosis

Correlation between Helicobacter pylori-associated gastric diseases and colorectal neoplasia

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World Journal of Gastroenterology 2016年第18期22卷 4576-4584页

作者： Ying Qing Min Wang Ying-Min Lin Dong Wu Jing-Yu Zhu Lang Gao yan-yan liu Teng-Fei Yin Department of Geriatric Gastroenterology Qi-Lu Hospital of Shandong University Department of General Medicine Qi-Lu Hospital of Shandong University Department of General Surgery Qi-Lu Hospital of Shandong University Department of Gastroenterology Jinan Central Hospital

AIM: To explore the correlation between Helicobacter pylori(H. pylori)-associated gastric diseases and colorectal ***: Patients included in this study underwent a colonoscopy and esophago-gastro-duodenoscopy(EGD) along with histopathological measurement between March 2012 and March 2015 at Qi-Lu Hospital of Shandong University, who also had results of H. pylori detection. A total of 233 cases were selected. Demographic data, H. pylori infection status(including results of rapid urease tests and gastric mucosa pathological examinations) and histopathological examination results of gastric and colorectal mucosa were gathered and analyzed. The statistical analysis focused on the prevalence of colorectal neoplasms among patients with various histopathological categories of the stomach. ORs and their 95%CI were calculated to describe the strengths of the ***: The incidence rates of colorectal adenoma without high-grade intraepithelial neoplasia(HGIEN)(OR = 2.400, 95%CI: 0.969-5.941), adenoma with HGIEN(5.333, 1.025-27.758) and adenocarcinoma(1.455, 0.382-5.543) were all higher for patients with H. pylori-associated gastritis than for those in the control group. The incidence rate of colorectal adenoma with HGIEN(3.218, 0.767-13.509) was higher in patients with intestinal metaplasia than in the control group, while the incidence rates of adenoma without HGIEN(0.874, 0.414-1.845) and adenocarcinoma(0.376, 0.096-1.470) were lower in the intestinal metaplasia group than in the control group. The incidence rate of colorectal adenoma without HGIEN(3.111, 1.248-7.753) was significantly higher in the gastric intraepithelial neoplasia group than in the control group, while the rates of adenoma with HGIEN(1.481, 0.138-15.941) and adenocarcinoma(2.020, 0.561-7.272) were higher in the gastric intraepithelial neoplasia group. Incidence rates of colorectal adenoma without HGIEN(1.067, 0.264-4.314), adenoma with HGIEN(2.667, 0.231-30.800) and adenocarcino

关键词： Helicobacter pylori Helicobacter pylori-associated gastric diseases Colorectal neoplasia Endoscopy with pathological biopsy Chinese population

Effects of Total Alkaloids in Buxus microphylla Leaves on Aorta Smooth Muscle of Rats and Their Mechanisms

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Chinese Herbal Medicines 2012年第2期4卷 136-141页

作者： Hui-qin ZHANG[a] yan-yan liu[b] Yong-wen LI[a] Li LI[a] Zhi-qing CUI[c] Department of Pharmacology Guilin Medical College Guilin 541001 China

Objective To investigate the effects of total alkaloids in Buxus microphylla leaves(ABML)on isolated rats thoracic aorta rings,and then to explore the possible mechanisms underlying the *** Thoracic aortas of Wistar rats were isolated,removed,and mounted onto an organ *** effects of ABML at different concentration on the contraction of isolated thoracic aorta rings(with and without endothelium)precontracted with KCl or PE were observed with organ bath ***-effect curves of CaCl2 were recorded by organ bath *** concentration of intracellular Ca 2+ ([Ca 2+ ]i)increased by PE,KCI,and caffeine in the presence of ABML was determined using Ca 2+ sensitive fluorescence indicator Fura-2/AM loaded thoracic aorta vascular smooth muscle (VSM)cells of *** In aorta rings precontracted with PE and KCl,ABML produced concentration- dependent relaxation in both intact and denuded endothelium ring *** was no difference in the inhibition of contraction between the intact and denuded endothelium ring groups at the same *** of isolated thoracic aorta rings to ABML led to a significant reduction in the contracting response induced by CaCl2,and shifted the cumulative concentration-response curves to *** could significantly inhibit the extracellular Ca 2+ influx induced by PE and KCl under[Ca 2+ ]0 of 1.5 mmol/L,with inhibitory ratios of 40.2%and 49.9%,*** the case of Ca 2+ -free,ABML could significantly inhibit the intracellular Ca 2+ release induced by PE,with inhibitory ratio of 72.4%.Conclusion ABML relaxes thoracic aorta VSM cells by suppressing influx of extracellular Ca 2+ via voltage-dependent Ca 2+ channel and receptor-operated Ca 2+ channel.

关键词： Ca 2+ Fura-2/AM isolated thoracic aorta rings total alkaloids of Buxus microphylla leaves vascular smooth muscle cells

Ultrasound-guided continuous adductor canal block for analgesia after total knee replacement

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Chinese Medical Journal 2014年第23期127卷 4077-4081页

作者： Zhang Wei Hu yan Tao yan liu Xuebing Wang Geng Department of Anesthesiology Beijing Jishuitan Hospital Beijing 100035 China

Background There are several methods for postoperative analgesia for knee *** commonly utilized method is multimodal analgesia based on continuous femoral nerve *** aim of this study was to investigate the application of continuous adductor canal block for analgesia after total knee replacement and compare this method with continuous femoral nerve *** Sixty patients scheduled for total knee replacement from June 2013 to March 2014 were randomly divided into a femoral group and an adductor *** were placed under the guidance of nerve stimulation in the femoral group and under the guidance of ultrasound in the adductor *** were performed under combined spinal and epidural *** the operations,0.2％ ropivacaine was given at a speed of 5 ml/h through catheters in all *** analogue scale （VAS） pain scores at rest and while moving were noted at 4,24,and 48 hours after the operation,and quadriceps strength was also assessed at these *** parameters such as doses of complementary analgesics and side effects were also *** There were no significant differences between the groups in VAS pain scores at rest or while moving,at 4,24,or 48 hours after the operation （P ＞0.05）.At these time-points,mean quadriceps strengths in the adductor group were 3.0 （2.75-3.0）,3.0 （3.0-4.0）,and 4.0 （3.0-4.0）,respectively,all of which were significantly stronger than the corresponding means in the femoral group,which were 2.0 （2.0-3.0）,2.0 （2.0-3.0）,and 3.0 （2.0-4.0）,respectively （P ＜0.05）.There were no significant differences between the groups in doses of complementary analgesics or side effects （P ＞0.05）.X-ray images of some patients showed that local anesthetic administered into the adductor canal could diffuse upward and reach the femoral *** Continuous adductor canal block with 0.2％ ropivacaine could be used effectively for analgesia after total knee *** with

关键词： adductor canal block femoral nerve block ropivacaine total knee replacement multimodal analgesia

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弹性石墨在钻井液中的应用研究

天然气工业 2003年第1期23卷 42-44页

作者：张琰刘艳石油大学

文章首先介绍了弹性石墨无毒、无味、性能稳定的特点。并介绍了将弹性石墨作为固体润滑剂应用于水基钻井液所进行的系列实验研究 ,包括弹性石墨对钻井液滤失性及流变性的影响、对钻井液润滑性能的改善等 ,以及通过对不同加量下的弹性石... 详细信息

文章首先介绍了弹性石墨无毒、无味、性能稳定的特点。并介绍了将弹性石墨作为固体润滑剂应用于水基钻井液所进行的系列实验研究 ,包括弹性石墨对钻井液滤失性及流变性的影响、对钻井液润滑性能的改善等 ,以及通过对不同加量下的弹性石墨对钻井液性能的改善效果确定其合理加量。研究结果表明 ,弹性石墨与实验用水基钻井液相容性良好 ,对流变性影响很小 ,具有降低钻井液滤失量的作用 ,并且能明显地改善钻井液润滑性能 ,是抗温性能优良的钻井液润滑剂 ;在钻井液中加入 0 .3 %弹性石墨后 ,在 15 0℃高温条件下老化 16h后 ,可以将钻井液的润滑系数降低 3 0 .4% ,滤饼粘滞系数降低 3 0 .1%。

关键词：弹性石墨钻井液应用研究石油钻井水基钻井液润滑性流变性

Clinical study on pediatric Fisher's syndrome in Twenty-two cases

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白求恩医科大学学报 2001年第2期27卷 181-183页

作者： SUN Jing-hui,HAN yan-yan,liu Li,LU Ji-rong (Department of Pediatrics, First Hospital,Jilin University, Changchun 130021 China)[ 吉林大学附属第一医院吉林长春 130021

目的 :进一步明确小儿 Fisher氏综合征的病因及诊断标准。方法 :对 2 2例小儿 Fisher氏综合征的临床表现、脑脊液进行对比研究。结果 :2 2例患儿均以眼肌麻痹和小脑共济失调为主征 ,伴有肢体不同程度的不完全的弛缓性瘫痪 ,约半数以上... 详细信息

目的 :进一步明确小儿 Fisher氏综合征的病因及诊断标准。方法 :对 2 2例小儿 Fisher氏综合征的临床表现、脑脊液进行对比研究。结果 :2 2例患儿均以眼肌麻痹和小脑共济失调为主征 ,伴有肢体不同程度的不完全的弛缓性瘫痪 ,约半数以上病儿脑脊液出现蛋白、细胞分离现象。结论 :Fisher氏综合征是急性感染性神经根神经炎 ( AIP)一种特殊型或变异型 ,是以小脑共济失调为主的颅神经受损的AIP。

关键词：儿童 Fisher氏综合征病因诊断标准临床表现脑脊液

Salvianolic acid A protects H9C2 cardiomyocytes against hypoxia/reoxygenation injuryby regulating VDAC1

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中国药理学与毒理学杂志 2019年第10期 800-801页

作者： WANG Dan-shu yan liu-yan WANG Rong-rong WANG Shou-bao FANG Lian-hua DU Guan-hua Beijing Key Laboratory of Drug Target Identification and Drug Screening Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical College

OBJECTIVE To investigate the role of voltage-dependent anion channel 1（VDAC1） in the protective effects of Salvianolic acid A（SAA） on H9C2 cardiomyocytes subjected to hypoxia/reoxygenation（H/R） *** H9C2 cardiomyocytes were subjected to 4 h of hypoxia（1% O2, 94% N2, 5% CO2, 37℃） followed by 4 h of reoxygenation（95% air, 5% CO2, 37℃）. SAA(1 umol·L-1)was administrated at the same time of reoxygenation. To examine whether the expression of VDAC1 is regulated by SAA, H9C2 cardiomyocytes were respectively transfected with VDAC1 si RNA and VDAC1 over expression plasmid. The viability of H9C2 cardiomyocytes was detected by Cell Counting kit-8 assay and further confirmed by detecting the level of intracel ular lactate *** were evaluated using an Annexin Ⅴ-FITC/propidiumiodide staining kit detected by flow *** level of mitochondrial ROS was measured using the fluorescent probe Mito SOX. The mitochondrial Ca2+signal was monitored with a FRET-based Ca2+indicator. Western blotting and q RT-PCR analysis were used to observe the protein and m RNA levels of VDAC1, and we use luciferase reporter assay to further explore whether SAA has a potential binding sites on VDAC1 promoter to perform the direct regulation on VDAC1. The oligomeric state of VDAC1 was explored by BRET2 assay. RESULTS H/R injury significantly increased the expression of VDAC1, and induced VDAC1 oligomerization. VDAC1 silencing could increase the viability of H/R-treated cardiomyocytes, and attenuate apoptosis as well as the increase on the level of mitochondrial ROS and Ca2+uptake against H/R injury,which performed the same protective effects with ***, VDAC1 overexpression could aggravate cell injury. Taken together, VDAC1 was involved in the mechanisms of H/R-induced cell injury. SAA could significantly inhibit the expression of VDAC1 compared with H/R group, we also found that SAA exhibited a direct regulative effect in 3′-UTR of VDAC1 gene. Moreover, SAA could

关键词： VDAC1 H/R injury oligomerization Ca2+ signal ROS apoptosis

A polarization sensitive interferometer:Delta interferometer

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Chinese Physics B 2024年第3期33卷 369-377页

作者：卫超奇刘建彬董翼飞孙雨农周宇郑淮斌刘严严闫秀生李福利徐卓 Key Laboratory of Multifunctional Materials and Structures Ministry of Education & International Center for Dielectric ResearchSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'an 710049China MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Department of Applied PhysicsXi'an Jiaotong UniversityXi'an 710049China Science and Technology on Electro-Optical Information Security Control Laboratory Tianjin 300308China

A new type of polarization sensitive interferometer is proposed,named the Delta interferometer,inspired by its geometry resembling the Greek letter *** main difference between the Delta interferometer and other existing interferometers,such as Michelson,Mach-Zehnder and Young's double-slit interferometers,is that the two interfering paths are asymmetrical in the Delta *** visibility of the first-order interference pattern observed in the Delta interferometer is dependent on the polarization of the incidental *** coherence theory is employed to interpret this phenomenon and single-mode continuous-wave laser light is employed to verify the theoretical *** theoretical and experimental results are *** Delta interferometer is a perfect tool to study the reflection of electromagnetic fields in different polarizations and may find applications in polarization-sensitive scenarios.

关键词： phase sensitive interferometer Fresnel formula first-order interference