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Scavenging of Cd through Fe/Mn oxides within natural surface coatings

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Journal of Environmental Sciences 2006年第6期18卷 1199-1203页

作者： LI yu HUANG guo-he ZHANG Bai-yu guo Shu-hai Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China Department of Environmental Science College of Environment and Resources Jilin University Changchun 130012 China Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina SK S4S 0A2 Canada

The dynamics of Cd scavenging from solutions by Fe/Mn oxides in natural surface coatings （NSCs） was investigated under laboratory conditions. Selective extraction methods were employed to estimate the contributions of Fe/Mn oxides, where hydroxylamine hydrochloride （0.01 mol/L NH2OH-HCl ＋ 0.01 mol/L HNO3）, sodium dithionite （0.4 mol/L Na2S2O4） and nitric acid （10% HNO3） were used as extraction reagents. The Cd scavenging was accomplished with developing periods of the NSCs （totally 21 data sets）. The resulting process dynamics fitted well to the Elovich equation, demonstrating that the amount of Cd scavenged was proportional to the increments of Fe/Mn oxides that were accumulated in the NSCs. The amount of Cd bound to Fe oxides （MCdFe） and Mn oxides （MCdMn） could be quantified by solving two equations based on the properties of two extraction reagents. The amount of Cd scavenged by Fe/Mn oxides could also be estimated using MCdFe and MCdMn divided by the total amounts of Fe and Mn oxides in the NSCs, respectively. The results indicated that the Cd scavenging by Fe/Mn oxides was dominated by Fe oxides, with less roles attributed to Mn oxides. The estimated levels of Cd scavenging through Fe and Mn oxides agreed well with those predicted through additive-adsorption and linear-regression models.

关键词： cadmium scavenging natural surface coatings selective extraction iron oxides manganese oxides

Chain damage effects of multi-spaced plates by reactive jet impact

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Defence Technology（防务技术） 2021年第2期17卷 393-404页

作者： yuan-feng Zheng Cheng-hai Su Huan-guo guo Qing-bo yu hai-fu Wang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

Chain damage is a new phenomenon that occurs when a reactive jet impacts and penetrates multispaced *** reactive jet produces mechanical perforations on the spaced plates by its kinetic energy(KE),and then results in unusual chain rupturing effects and excessive structural damage on the spaced plates by its deflagration *** the present study,the chain damage behavior is initially demonstrated by *** reactive liners,composed of 26 wt%Al and 74 wt%PTFE,are fabricated through a pressing and sintering *** reactive liner thicknesses of 0.08 CD,0.10 CD and 0.12 CD(charge diameter)are chosen to carry out the chain damage *** results show a chain rupturing phenomenon caused by reactive *** constant reaction delay time and the different penetration velocities of reactive jets from liners with different thicknesses result in the variation of the deflagration position,which consequently determines the number of ruptured plates behind the ***,the finite-element code AUTODYN-3D has been used to simulate the kinetic energy only-induced rupturing effects on plates,based on the mechanism of behind armor debris(BAD).The significant discrepancies between simulations and experiments indicate that one enhanced damage mechanism,the behind armor blast(BAB),has acted on the ruptured ***,a theoretical model is used to consider the BAB-induced enhancement,and the analysis shows that the rupturing area on aluminum plates depends strongly upon the KE only-induced pre-perforations,the mass of reactive materials,and the thickness of plates.

关键词： Reactive materials Reactive jet Chain damage Behind armor blast

Literature study on traditional Chinese medicine syndromes after renal transplantation

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World Journal of Transplantation 2025年第1期15卷 150-155页

作者： yun-Peng guo Ling-Xue Bao yu-Yang Wang Quan Wen Gai Hang Bo Chen Tongliao Clinical Medical College Inner Mongolia Medical UniversityTongliao 028000Inner Mongolia Autonomous RegionChina Department of Urology Tongliao People's HospitalTongliao 028000Inner Mongolia Autonomous RegionChina

BACKGROUND Kidney transplantation is the most effective means to treat patients with renal failure,but its postoperative problems such as rejection reactions,immunosuppressant poisoning,chronic transplant kidney nephropathy,*** have not been effectively *** study searched for literature on traditional Chinese medicine(TCM)syndromes after kidney transplantation in China,conducted statistical analysis of the results,and sought to identify the underlying *** To understand the TCM syndromes after renal transplantation and associated rules and provide a theoretical basis for further clinical *** The literature pertaining to TCM syndromes in renal transplantation,published in the China National Knowledge Infrastructure,Wanfang database,and WIP database from 1970 to 2021,was meticulously searched and comprehensively and statistically *** Following the established inclusion and exclusion criteria,13 studies were selected for ***-renal transplantation,no significant discrepancy was noted among the groups based on the location of TCM ***,when categorized according to TCM pathogenic factors,the groups with spleen and kidney yang deficiency,as well as liver and kidney yin deficiency,exhibited a statistically significant difference in the *** Currently,the research on TCM syndromes pertaining to renal transplantation is in its nascent *** is imperative to conduct a multicentric,large-scale survey of TCM syndromes subsequent to renal transplantation in the ensuing years.

关键词： Kidney transplantation Syndrome Literature analysis Traditional Chinese medicine Systematic review

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西安周边50岁及以上农村人口眼病调查

国际眼科杂志 2010年第12期10卷 2330-2332页

作者：邢淑惠刘是刘伟郭海玉黄颖妮张晓丽中国陕西省西安市第四人民医院眼科 710043

目的:通过查体了解西安周边50岁及以上农村人口各种眼病构成情况,探讨影响农村老年人视力的主要因素及应对措施。方法:我们2009-07/2010-05对西安市周边5个乡50岁及以上的老年常住人口共1238例进行了眼科常规查体,包括视力、裂隙灯、眼... 详细信息

目的:通过查体了解西安周边50岁及以上农村人口各种眼病构成情况,探讨影响农村老年人视力的主要因素及应对措施。方法:我们2009-07/2010-05对西安市周边5个乡50岁及以上的老年常住人口共1238例进行了眼科常规查体,包括视力、裂隙灯、眼压、电脑验光、眼底镜等检查,按照疾病分类统计。结果:各种眼病中白内障居首位,481例(38.85%),其他眼病依次为屈光不正347例(28.03%),眼底病58例(4.68%),翼状胬肉30例(2.42%),青光眼17例(1.37%),角膜病15例(1.21%),其他27例(2.18%),健康人群263例(21.24%)。结论:白内障、屈光不正、眼底病是农村老年人的多发眼病,故深入基层、眼病普查及卫生宣教是减少可避免盲的有效措施。

关键词：农村老年人眼病构成

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浙江省老年人体质现状及相关因素的调查分析

山东体育学院学报 2004年第2期20卷 56-57页

作者：郭海英余绍森浙江省体育科学研究所浙江杭州310004

对浙江省9458名老年人进行的抽样体质检测,结果显示体质合格率为71.64%,其中女性的体质合格率高于男性,参加体育锻炼者的体质合格率高于不锻炼者,城市老年人的体质合格率高于农村老年人,曾从事文职工作的老年人的体质合格率高于曾从事... 详细信息

对浙江省9458名老年人进行的抽样体质检测,结果显示体质合格率为71.64%,其中女性的体质合格率高于男性,参加体育锻炼者的体质合格率高于不锻炼者,城市老年人的体质合格率高于农村老年人,曾从事文职工作的老年人的体质合格率高于曾从事体力劳动的老年人。针对目前浙江省老年人的体质水平和体育锻炼现状提出相应建议。

关键词：浙江老年人体质水平体育锻炼体质合格率健身意识

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu Xiao-Jia Yang Qian-Ru He Fei Ding hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie Zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

UV-Vis-NIR Light-deformable Shape-memory Polyurethane Doped with Liquid-crystal Mixture and GO towards Biomimetic Applications

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Chinese Journal of Polymer Science 2022年第2期40卷 166-174页

作者： Peng Zhang Feng Cai guo-Jie Wang hai-Feng yu School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Institute of New Structural Materials School of Materials Science and Engineeringand Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationPeking UniversityBeijing 100871China

Nature has been inspiring material researchers to fabricate biomimetic functional devices for various applications, and shape-memory polymer materials(SMPMs) have received tremendous attention since the promising intelligent materials possess more advantages over others for the fabrication of biomimetic functional devices. As is well-known, SMPMs can be stimulated by heat, electricity, magnetism, pH, solvent and light. From the viewpoint of practical applications, ultraviolet(UV)-visible(Vis)-near infrared(NIR) light-responsive SMPMs are undoubtedly more advantageous. However, up to now, UV-Vis-NIR light-deformable SMPMs by combining photothermal and photochemical effects are still rarely reported. Here we designed a UV-Vis-NIR light-deformable SMP composite film via incorporating a liquid crystal(LC) mixture and graphene oxide(GO) into a shape-memory polyurethane matrix. The elongated composite films exhibited interesting photomechanical bending deformations with different light-triggered mechanisms,(1) photochemically induced LC phase transition upon UV exposure,(2) photochemically and photothermally induced LC phase transition upon visible-light irradiation,(3) photothermally triggered LC phase transition and partial stress relaxation upon low-intensity NIR exposure. All the deformed objects could recover to their original shapes by high-intensity NIR ***, the biomimetic circadian rhythms of acacia leaves and the biomimetic bending/spreading of fingers were successfully achieved, which could blaze a way in the field of biomimetic functional devices due to the excellent light-deformable and shape-memory properties of the SMP composite films.

关键词： UV-Vis-NIR Light-deformable Shape-memory Liquid-crystal Biomimetic functional device

地下滴灌条件下不同接种处理对苜蓿根瘤菌的定殖、结瘤和固氮的影响

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草地学报 2018年第2期26卷 479-487页

作者：热比姑丽.热合曼郭海玉李卫军罗明皇甫彩娟韩剑新疆农业大学农学院新疆乌鲁木齐830052 新疆农业大学草业与环境科学学院新疆乌鲁木齐830052 新疆自治区高校农林有害生物监测与安全防控重点实验室新疆乌鲁木齐830052

在苜蓿地下滴灌田间小区试验条件下,研究不同处理接种绿色荧光蛋白基因(GFP)标记的苜蓿中华根瘤菌(Sinorhizobium meliloti)XGL026菌株在苜蓿根际的定殖、结瘤动态和固氮性能。结果表明:拌种接菌(B)在第1茬苜蓿根际根瘤菌的定殖密度、... 详细信息

在苜蓿地下滴灌田间小区试验条件下,研究不同处理接种绿色荧光蛋白基因(GFP)标记的苜蓿中华根瘤菌(Sinorhizobium meliloti)XGL026菌株在苜蓿根际的定殖、结瘤动态和固氮性能。结果表明:拌种接菌(B)在第1茬苜蓿根际根瘤菌的定殖密度、结瘤数和占瘤率最高,第2、3茬苜蓿则明显降低。第1茬苜蓿刈割后滴施1次根瘤菌(D),拌种结合第1茬刈割后滴施1次根瘤菌(B+D1),拌种结合第1、2茬刈割后滴施2次根瘤菌(B+D2),拌种结合第1茬刈割后滴施1次根瘤菌并增施1次氮肥(B+D1+N1),拌种结合第1、2茬刈割后滴施2次根瘤菌并增施2次氮肥(B+D2+N2)处理,根瘤菌的定殖水平持续稳定,显著高于B处理。B+D1、B+D2、B+D1+N1和B+D2+N2处理均能显著增加苜蓿结瘤数,提高占瘤率(P<0.05),其中B+D1+N1和B+D2+N2接种效果最优。地下滴灌模式有利于苜蓿侧根形成根瘤。采用15 N天然丰度法测定不同接种处理的固氮效率,结果显示,接种处理在苜蓿一年生长期中的固氮率和固氮量分别为54.52%~76.80%和43.00~183.39kg·hm^(-2),较未接种对照提高3.35%~40.41%和13.56~83.86kg·hm^(-2)。B处理在第1茬苜蓿的固氮效率最突出,之后明显下降。B+D1+N1、B+D2+N2处理分别在第2、第3茬苜蓿上具有最高的固氮效率。研究结果表明,滴灌条件下拌种结合滴施根瘤菌同时加施少量氮肥可以显著提高根瘤菌的定殖、结瘤和固氮性能。

关键词：地下滴灌苜蓿中华根瘤菌定殖固氮效率 15 N天然丰度法