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| 1 | A high strength, anti-fouling, self-healable, and thermoplastic supramolecular polymer hydrogel with low fibrotic response显示文摘The fibrotic response plays an important role in the performance and longevity of implantable devices. Thus, development of effective anti-inflammatory and anti-fibrosis biomaterial implants has become an urgent task. In this work, we developed a novel supramolecular polymer hydrogel through the copolymerization of N-acryloyl glycinamide(NAGA) and carboxybetaine acrylamide(CBAA) in the absence of any chemical crosslinker, which the mechanical properties being tunable through changing the monomer concentration and the monomer ratio over a broad scope. The hydrogel possessed the superior mechanical performances: high tensile strength(~1.13 MPa), large stretchability(~1200%), and excellent compressive strength(~9 MPa) at high monomer concentration and NAGA/CBAA ratio. Introduction of CBAA could promote the self-healability, thermoplasticity of suparmolecular polymer hydrogels at lower temperatures, meanwhile dramatically improving anti-fouling property.Histological analysis and in vitro cytotoxicity assays testified the excellent biocompatibility of the hydrogel. This high strength supramolecular polymer hydrogel with integrated multiple functions holds promising potentials as a scaffold biomaterial for treating degenerated soft supporting tissues. | WANG HongBo LI HaoFei WU YuanHao YANG JianHai LIU WenGuang | 2019 | Science China(Technological Sciences)2019，62，4： | 11 |
| 2 | Characteristics and formation mechanism of regional haze episodes in the Pearl River Delta of China显示文摘To investigate the characteristics and the specific mechanism of continuous haze,comprehensive measurements were conducted from 15 October to 19 November in the Atmospheric Environment Monitoring Super-Station in Heshan of Guangdong province.Five haze episodes occurred in October and November 2014 in the Pearl River Delta(PRD)region. The meteorological parameters, gas data, chemical compositions, and optical parameters of the aerosols were obtained. Among these events, the second haze episode,with the highest concentration of PM2.5 of 187.51 μg/m^3, was the most severe. NO^3-was always higher than SO_4^(2-), which indicated that motor vehicles played an important role in the haze, even though the oxidation rate from SO_2 to SO_4^(2-)was faster than that of NOXto NO_3^-. The difference between the hourly averages of Na+and K+during the haze episode and clean days was small, implying that straw combustion and sea salt had no significant effect on the occurrence of haze, and the backward trajectories of the air masses also conformed with this result. The air pollutants were difficult to disperse because of the significant decrease in the planetary boundary layer(PBL) height. Relative humidity played a crucial role in the formation of haze by leading to hygroscopic growth of the diameter of aerosols. | Wenguang Li Xingang Liu Yuanhang Zhang Kang Sun Yusheng Wu Rui Xue Limin Zeng Yu Qu Junling An | 2018 | Journal of Environmental Sciences2018，30，1： | 11 |
| 3 | Total mesopancreas excision for pancreatic head cancer: analysis of 120 cases显示文摘Objective: To evaluate the feasibility and safety of total mesopancreas excision(TMpE) in the treatment of pancreatic head cancer. Methods: The clinical and pathological data of 120 patients with pancreatic head cancer who had undergone TMpE in our center from May 2010 to January 2014 were retrospectively analyzed. Results: The mean operative time was(275.0±50.2) min and the average intra-operative blood loss was(390.0±160.5) mL. Post-operative complications were reported in 45 patients, while no peri-operative death was noted. The specimen margins were measured in three dimensions, and 86 patients(71.6%) achieved R0 resection. Conclusions: TMpE is safe and feasible for pancreatic head cancer and is particularly helpful to increase the R0 resection rate. | Wenguang Wu Xu'an Wang Xiangsong Wu Maolan Li Hao Weng Yang Cao Ruifa Bao Sijun Su Jianhua Lu Wei Gong Weibin Shi Jun Gu Xuefeng Wang Yingbin Liu Zhiwei Quan Shuyou Peng | 2016 | Chinese Journal of Cancer Research2016，28，4： | 10 |
| 4 | Biological applications of carbon dots显示文摘Carbon dots(C-dots), since their first discovery in 2004 by Scrivens et al. during purification of single-walled carbon nanotubes, have gradually become a rising star in the fluorescent nanoparticles family, due to their strong fluorescence, resistance to photobleaching, low toxicity, along with their abundant and inexpensive nature. In the past decade, the procedures for preparing C-dots have become increasingly versatile and facile, and their applications are being extended to a growing number of fields. In this review, we focused on introducing the biological applications of C-dots, hoping to expedite their translation to the clinic. | WANG Wei CHENG Lu LIU WenGuang | 2014 | Science China Chemistry2014，57，4： | 10 |
| 5 | Application of customized augments fabricated by rapid prototyping for severe bone defects of the knee显示文摘With the population aging and an increasing desire for a high quality of life,millions of patients who suffered knee arthropathy have undergone total knee arthroplasty (TKA).Although the success rate for primary TKA has been quite high,the number of revision surgeries can not be ignored.Bone loss is one of the challenges confronting surgeons who perform revision TKAs as it can impair alignment accuracy and the long-term stability of the implant.Although several options are available for bone loss after TKA--cement,bone grafting,standard augments,and hinged implants--there is no single ideal option available for all patients with a severe bone defect because of the variety and severity of the defects.1 The burgeoning rapid prototyping (RP) technique,which has been used to fabricate components with complex and unique structures,may offer a novel option in these cases. | Yin Qingfeng Liu Wenguang Wang Shaojin | 2014 | Chinese Medical Journal2014，，15： | 10 |
| 6 | A conductive and biodegradable hydrogel for minimally delivering adipose-derived stem cells显示文摘Injectable hydrogel is one of the most important biomaterials for tissue engineering and drug delivery. However, it is still a challenge to obtain an injectable hydrogel with conductive property on account of the poor water solubility of conductive polymers. Here, a conductive hydrogel with controllable biodegradability was constructed for minimally delivering adipose mesenchymal stem cells(ADSCs). Firstly, a disulfide containing and hyperbranched polymer structure poly(β-amino ester)(PBAE) with multi-acrylate end groups was synthesized by poly(ethylene glycol) diacrylate(PEGDA) and cystamine, and then tetraaniline(TA) was grafted on the PBAE chain to obtain a conductive PBAE-TA polymer. PBAE-TA shows a good water solubility, which can be crosslinked by thiol-modified hyaluronic acid(HA-SH) due to the click reaction between acrylate and thiol to in situ form a hydrogel within 1 min. The hydrogel illustrates a good electrical conductivity of 9.6×10–3 S/cm and a controllable biodegradable behavior in dithiothreotol(DTT) solution. PBAE-TA/HA-SH hydrogel was subcutaneously injected for delivering ADSCs. The gene expression of Cx43 and TGF-β1 were up-regulated by PBAE-TA/HA-SH hydrogel, suggesting an enhancement in the electrical coupling and an anti-inflammatory property. This injectable, biodegradable, and conductive hydrogel can effectively deliver stem cells, which might be used in skin, muscle, and myocardium regeneration. | SHANG YingYing LIANG Wei TAN BaoYu XIAO Meng ZOU Yang LIU WenGuang WANG Wei | 2019 | Science China(Technological Sciences)2019，62，10： | 7 |
| 7 | Seasonal Variation of Biochemical Components in Clam (Saxidomuspurpuratus Sowerby 1852) in Relation to Its Reproductive Cycle and the Environmental Condition of Sanggou Bay, China显示文摘Seasonal variation of biochemical components in clam(Saxidomus purpuratus Sowerby 1852) was investigated from March 2012 to February 2013 in relation to environmental condition of Sanggou Bay and the reproductive cycle of clam.According to the histological analysis,the reproductive cycle of S.purpuratus includes two distinctive phases:a total spent and inactive stage from November to January,and a gametogenesis stage,including ripeness and spawning,during the rest of the year.Gametes were generated at a low temperature(2.1℃) in February.Spawning took place once a year from June to October.The massive spawning occurred in August when the highest water temperature and chlorophyll a level could be observed.The key biochemical components(glycogen,protein and lipid) in five tissues(gonad,foot,mantle,siphon and adductor muscle) were analyzed.The glycogen content was high before gametogenesis,and decreased significantly during the gonad development in the gonad,mantle and foot of both females and males,suggesting that glycogen was an important energy source for gonad development.The protein and lipid contents increased in the ovary during the gonad development,demonstrating that they are the major organic components of oocytes.The lipid and protein contents decreased in the testis,implying that they can provide energy and material for spermatogenesis.The results also showed that protein stored in the mantle and foot could support the reproduction after the glycogen was depleted. | BI Jinhong LI Qi ZHANG Xinjun ZHANG Zhixin TIAN Jinling XU Yushan LIU Wenguang | 2016 | Journal of Ocean University of China2016，15，2： | 6 |
| 8 | A high strength pH responsive supramolecular copolymer hydrogel显示文摘Constructing high strength pH sensitive supramolecular polymer hydrogel remains very challenging due to the unavoidable network swelling caused by ionization of acid or basic groups at a specified pH.In this work,we proposed a simple and very convenient approach to fabricate high strength pH responsive supramolecular polymer(SP) hydrogels by one-pot copolymerization of N-acryloyl glycinamide(NAGA) and 2-vinyl-4,6-diamino-1,3,5-triazine(VDT),two feature hydrogen bonding monomers.In these PNAGA-PVDT SP hydrogels obtained,the hydrogen bonding of NAGA was shown to play a dominant role in reinforcing strength,while the hydrogen bonding of diaminotriazine served as a pH sensitive moiety.At pH 3,the mechanical properties of PNAGA-PVDT hydrogels decreased to a different extent due to the breakup of hydrogen bonding;in contrast,the hydrogel resumed the original strength while pH was raised to 7.4 because of reconstruction of hydrogen bonding.Over the selected pH range,the PNAGA-PVDT hydrogels exhibited up to 1.25 MPa tensile strength,845% breaking strain,69 kPa Young's modulus and 21 MPa compressive strength.This novel high strength pH-responsive SP hydrogels may find applications in biomedical and industrial fields. | WANG Qing ZHANG YinYu DAI XiYang SHI XiaoHuan LIU WenGuang | 2017 | Science China(Technological Sciences)2017，60，1： | 6 |
| 9 | Primary closure versus T-tube drainage in laparoscopic common bile duct exploration: a meta-analysis of randomized clinical trials显示文摘 | Xiangsong Wu Yong Yang Ping Dong Jun Gu Jianhua Lu Maolan Li Jiasheng Mu Wenguang Wu Jiahua Yang Lin Zhang Qichen Ding Yingbin Liu | 2012 | Langenbeck’s Archives of Surgery2012，，6： | 4 |
| 10 | Enhancement of transfection efficiency for HeLa cells via incorporating arginine moiety into chitosan显示文摘Arginine-rich peptides have attracted considerable attention due to their distinct internalization mechanism. It was reported that arginine and guanidino moieties were able to translocate through cell membranes and played a critical role in the process of membrane permeation. In this work, arginine was conjugated to the backbone of chitosan to form a novel chitosan derivative, arginine modified chitosan (Arg-CS). Arg-CS/DNA complexes were prepared according to the method of coacervation process. The physicochemical properties of Arg-CS and Arg-CS/DNA complexes were characterized and the transfection activity and efficiency mediated by Arg-CS/DNA complexes were investigated taking HeLa cells as target cells. Arg-CS was characterized by FTIR and 13C NMR. Arg-CS/DNA polye- lectrolyte complexes were investigated by agarose gel retardation, dynamic light scattering (DLS) and atomic force microscopy (AFM). The results revealed that the Arg-CS/DNA complexes started to form at N/P ratio of 2:1, and the size of particles varied from 100 to 180 nm. The cytotoxicity of Arg-CS and their complexes with plasmid DNA were determined by MTT assay for HeLa cells, and the results suggested that Arg-CS/DNA complexes were slightly less toxic than Arg-CS. Moreover, the derivative alone and their complexes showed significantly lower toxicity than PEI and PEI/DNA complexes, respectively. Taking HeLa cells as target cells and using pGL3-control as reporter gene, the luciferase expression mediated by Arg-CS was greatly enhanced to about 100 folds compared with the luciferase expression mediated by chitosan at different pH media. These results suggest that Arg-CS is a promising candi- date as a safe and efficient vector for gene delivery and transfection. | ZHU DunWan ZHANG HaiLing BAI JinGen LIU WenGuang LENG XiGang SONG CunXian YANG Jian LI XiaoWei JIN Xu SONG LiPing LIU LanXia LI XiuLan ZHANG Yang YAO KangDe | 2007 | Chinese Science Bulletin2007，52，23： | 4 |
| 11 | Bioactive antiinflammatory antibacterial hemostatic citrate-based dressing with macrophage polarization regulation for accelerating wound healing and hair follicle neogenesis显示文摘The efficient cutaneous wound healing accompanied with the enhanced skin appendage regeneration is still a challenge.The bacterial infection and excessive/prolonged inflammation inhibit wound healing process and result in the scar formation.Herein,we reported an anti-inflammatory polycitrate-polyethyleneimine-Ibuprofen(PCEI)and multifunctional PCEI-based F127-ε-polypeptide-alginic(FEA)dressing(FEA-PCEI)for accelerating wound healing and hair follicle neogenesis.PCEI showed the excellent anti-inflammation function through stimulating macrophage towards anti-inflammatory M2 subtype polarization.The FEA-PCEI dressing showed the temperature-response gelation,injectability,robust antibacterial activity,light-damage-resistant,homeostasis ability,and good cytocompatibility.The optimized dosage of FEA-PCEI dressing could significantly accelerate wound healing with anti-infection ability,reduce the scar formation,and promote the hair follicle neogenesis.This study provided a wound-repairing strategy through regulating the phenotype of immune cells by the designing bioactive multifunctional biomaterials. | Wenguang Liu Min Wang Wei Cheng Wen Niu Mi Chen Meng Luo Chenxi Xie Tongtong Leng Long Zhang Bo Lei | 2021 | Bioactive Materials2021，6，3： | 4 |
| 12 | Oxygen‑Deficient β‑MnO_(2)@Graphene Oxide Cathode for High‑Rate and Long‑Life Aqueous Zinc Ion Batteries显示文摘Recent years have witnessed a booming interest in grid-scale electrochemical energy storage,where much attention has been paid to the aqueous zinc ion batteries(AZIBs).Among various cathode materials for AZIBs,manganese oxides have risen to prominence due to their high energy density and low cost.However,sluggish reaction kinetics and poor cycling stability dictate against their practical application.Herein,we demonstrate the combined use of defect engineering and interfacial optimization that can simultaneously promote rate capability and cycling stability of MnO_(2) cathodes.β-MnO_(2) with abundant oxygen vacancies(VO)and graphene oxide(GO)wrapping is synthesized,in which VO in the bulk accelerate the charge/discharge kinetics while GO on the surfaces inhibits the Mn dissolution.This electrode shows a sustained reversible capacity of~129.6 mAh g^(−1) even after 2000 cycles at a current rate of 4C,outperforming the state-of-the-art MnO_(2)-based cathodes.The superior performance can be rationalized by the direct interaction between surface VO and the GO coating layer,as well as the regulation of structural evolution ofβ-MnO_(2) during cycling.The combinatorial design scheme in this work offers a practical pathway for obtaining high-rate and long-life cathodes for AZIBs. | Shouxiang Ding Mingzheng Zhang Runzhi Qin Jianjun Fang Hengyu Ren Haocong Yi Lele Liu Wenguang Zhao Yang Li Lu Yao Shunning Li Qinghe Zhao Feng Pan | 2021 | Nano-Micro Letters2021，13，11： | 3 |
| 13 | Tea eggs-inspired high-strength natural polymer hydrogels显示文摘Natural polymer(NP)hydrogels are an irreplaceable class of biomaterials owing to their identified biosafety;however,the intrinsic poor mechanical strengths severely limit their applications as structural tissue engineering scaffolds.Inspired by the stiffening albumen gel of tea eggs,a traditional Chinese snack,high-strength NP hydrogels are constructed by simply soaking in aqueous solution of tea polyphenols(TP),an active ingredient extracted from tea.The TP-treated representative NP hydrogels exhibit considerably enhanced multifaceted mechanical properties with maximum 19-/30-,8.4-,6.1-,72-fold increases in tensile/compressive strengths,Young’s modulus,elongation at break and facture toughness,respectively,compared with pristine hydrogels,primarily due to the hydrogen bonding interactions between TP and NP chains.The TP-treated NP hydrogels can resist different large deformations,which cannot be achieved by their original species at all.In aqueous solution,the TP-treated NP hydrogels can still maintain robust mechanical performances,in spite of somewhat decline in strengths with release of TP,which just favorably affords increased water contents,antibacterial and antioxidant activities.GelMA-TP hydrogel is shown to facilitate wound healing in a full-thickness skin defect model.Importantly,the weak 3D printed GelMA scaffolds are significantly strengthened by TP treatment,broadening the possibility for customizing individualized bioscaffolds. | Tengling Wu Chunyan Cui Chuanchuan Fan Ziyang Xu Yang Liu Wenguang Liu | 2021 | Bioactive Materials2021，6，9： | 3 |
| 14 | Designing high-strength titanium alloy using pseudo-spinodal mechanism through diffusion multiple experiment and CALPHAD calculation显示文摘This study used the pseudo-spinodal mechanism to obtain the ultrafineαphase for designing highstrength titanium alloy.Diffusion multiple experiments were designed to find the composition range of TM-x Mo-y V alloy(TM:Ti-4.5 Al-2 Cr-2.5 Nb-2 Zr-1 Sn)for obtaining ultrafineαphase.CALPHAD results confirm that when the alloy composition is located near the intersection of theαandβphase free energy curves,the alloy will undergo pseudo-spinodal transformation and obtain the ultrafineαphase.The designed TM-6 Mo-3 V alloy has a yield strength of 1411 MPa and an elongation of 6.5%.The strength of the alloy depends on the thickness,fraction of theαphase and the solid solution strengthening effect of the alloying elements.The deformation mechanism of the alloy is the dislocation slip of theαandβphases and the twin deformation of theαphase.The large number ofα/βinterfaces produced by the fineαphase is the main reason for limiting the ductility of the alloy.The use of the pseudo-spinodal mechanism combined with diffusion multiple experiments and CALPHAD is an effective method for designing high-strength titanium alloys. | Di Wu Libin Liu Lijun Zeng Wenguang Zhu Wanlin Wang Xiaoyong Zhang Junfeng Hou Baoliang Liu Jiafeng Lei Kechao Zhou | 2021 | Journal of Materials Science & Technology2021，，15： | 3 |
| 15 | Breakthrough Technologies for the Biorefining of Organic Solid and Liquid Wastes显示文摘有机固液废弃物包含大量能量、养分和水分,不应仅视其为废物。数十年来,人们一直对城市固体废物进行回收、堆制和燃烧,并从中提取能量和有价值的物质。污水的首要管理策略是治理和排放。随着技术的进步,通过新方法使利用固体废物和废水成为可能。考虑到废物特殊的化学、物理和生物性质,需要整合多种技术以使废物的能量和价值回收最大化。为此,生物炼制是完全利用废物中的能量和价值的一个合适的方法。研究证明,不可回收废弃物和生物固体可通过不同方法转化为可利用的热能、电能、燃料和化学品,并且液体废物或能帮助农作物和藻类的成长,为能量回收和食物生产提供不同的选择。本文针对有机固液废物提出新型生物炼制方案,这些废物来源于城市废料、食品和生物加工厂以及动物生产设施。四大新型突破性科技——真空辅助高温厌氧消化、扩展鱼菜共生系统、含油废物经甘油裂解制取生物柴油和微波辅助热化学转化,均可运用于生物炼制方案中,从而成功将废物转化,用以生产化学品、化肥、能量(沼气、合成气、生物柴油和生物油)、食物、饲料,得到干净的水并显著减少污染物的排放。 | Paul Chen Erik Anderson Min Addy Renchuan Zhang Yanling Cheng Peng Peng Yiwei Ma Liangliang Fan Yaning Zhang Qian Lu Shiyu Liu Nan Zhou Xiangyuan Deng Wenguang Zhou Muhammad Omar Richard Griffith Faryal Kabir Hanwu Lei Yunpu Wang Yuhuan Liu Roger Ruan | 2018 | Engineering2018，4，4： | 3 |
| 16 | Study on cellular internalization of poly(vinyldiaminotriazine)-based hydrogen bonding type non-viral transgene vector显示文摘Previously we successfully prepared poly(vinyldiaminotriazine)(PVDT)-based non-viral vectors which complexed plasmid DNA via hydrogen bonding with adenine-thymine base pairs. In this report, surface charges and complex sizes of this system were further examined. The results showed that PVDT-based polymer could cover surface charges of DNA resulting in slightly negative or neutral complexes. It was also found that the complex sizes were governed by two events: the aggregation induced by the insta-bility of neutral particles, and more compact complexes produced by PVDT-based polymers. In the study of cellular uptake, chlorpromazine and filipin Ⅲ were used to inhibit clathrin- and caveolae-me- diated endocytosis, respectively. We found that PVDT-based systems were transported into cells via a non-clathrin, non-caveolae mediated endocytosis. This special process was studied by temperature inhibition and kinetics assays. It was revealed that such a pathway was characterized by (i) a more en-ergy dependent process and (ii) a much slow transfection-effective internalization. | YE GuiXiang CAO ZhiQiang LIN Lin CHEN DaYong LIU WenGuang | 2008 | Chinese Science Bulletin2008，53，15： | 3 |
| 17 | Construction of the Chinese Veteran Clinical Research (CVCR) Platform for the assessment of non-communicable diseases显示文摘 | Tan Jiping Li Nan Gao Jing Guo Yuhe Hu Wei Yang Jinsheng Yu Baocheng Yu Jianmin Du Wei Zhang Wenjun Cui Lianqi Wang Qingsong Xia Xiangnan Li Jianjun Zhou Peiyi Zhang Baohe Liu Zhiying Zhang Shaogang Sun Lanying Liu Nan Deng Ruixiang Dai Wenguang Yi Fang Chen Wenjun Zhang Yongqing Xue Shenwu Cui Bo Zhao Yiming Wang Luning | 2014 | Chinese Medical Journal2014，，3： | 3 |
| 18 | Hepatopancreatoduodenectomy for advanced biliary malignancies显示文摘Background:Hepatopancreatoduodenectomy(HPD)has been considered the only curative treatment for metastatic cholangiocarcinoma and some locally advanced gallbladder cancers(GBCs).However,HPD has not yet been included in treatment guidelines as a standard surgical procedure in consideration of its morbidity and mortality rates.The aim of this study was to evaluate the safety and effectiveness of HPD in treating biliary malignancies.Methods:The medical records of 57 patients with advanced biliary cancer undergoing HPD from January 2009 to December 2019 were retrospectively retrieved.A case-control analysis was conducted at our department.Patients with advanced GBC who underwent HPD(HPD-GBC group)were compared with a control group(None-HPD-GBC group).Baseline characteristics,preoperative treatments,tumor pathologic features,operative results,and prognosis were assessed.Results:Thirteen patients with cholangiocarcinoma and 44 patients with GBC underwent HPD at our department.Significant postoperative complications(grade III or greater)and postoperative pancreatic fistula were observed in 24(42.1%)and 15(26.3%)patients,respectively.One postoperative death occurred in the present study.Overall survival(OS)was longer in patients with advanced cholangiocarcinoma than in those with GBC(median survival time[MST],31 months vs.11 months;P<0.001).In the subgroup analysis of patients with advanced GBC,multivariate analysis demonstrated that T4 stage tumors(P=0.012),N2 tumors(P=0.001),and positive margin status(P=0.004)were independently associated with poorer OS.Patients with either one or more prognostic factors exhibited a shorter MST than patients without those prognostic factors(P<0.001).Conclusion:HPD could be performed with a relatively low mortality rate and an acceptable morbidity rate in an experienced highvolume center.For patients with advanced GBC without an N2 or T4 tumor,HPD can be a preferable treatment option. | Xiangsong Wu Maolan Li Wenguang Wu Xu’an Wang Huaifeng Li Runfa Bao Yijun Shu Jun Shen Jun Gu Xuefeng Wang Wei Gong Shuyou Peng Yingbin Liu | 2022 | Chinese Medical Journal2022，135，23： | 3 |
| 19 | Reproductive Cycle and Seasonal Variations in Lipid Content and Fatty Acid Composition in Gonad of the Cockle Fulvia mutica in Relation to Temperature and Food显示文摘From March 2004 to February 2005,seasonal variations in lipid content and fatty acid composition of gonad of the cockle Fulvia mutica(Reeve) were studied on the eastern coast of China in relation to the reproductive cycle and environment conditions(e.g.,temperature and food availability).Histological analysis as well as lipid and fatty acid analyses were performed on neutral and polar lipids of the gonad.Results showed that gametogenesis occurred in winter and spring at the expense of lipids previously accumulated in summer and autumn,whereas spawning occurred in summer(20.4-24.6℃).The seasonal variation in lipid content was similar to that of the mean oocyte diameter.In both neutral and polar lipids,the 20:5n-3 and 22:6n-3 levels were relatively higher than saturated fatty acids,and polyunsaturated fatty acids were abundant,with series n-3 as the predominant component.Seasonal variations in the 20:5n-3 and 22:6n-3 levels and the principal n-3 fatty acids were clearly related to the reproductive cycle.The ∑(n-3) and ∑(n-6) values were relatively high during January-May,and the associated unsaturation index was significantly higher than that in other months.The results suggest that fatty acids play an important role in the gametogenesis of F.mutica. | LIU Wenguang LI Qi KONG Lingfeng | 2013 | Journal of Ocean University of China2013，12，3： | 3 |
| 20 | Efficient recovery of valuable metals from waste printed circuit boards by microwave pyrolysis显示文摘The recycling of waste printed circuit board(WPCBs) is of great significance for saving resources and protecting the environment. In this study, the WPCBs were pyrolyzed by microwave and the contained valuable metals Cu, Sn and Pb were recovered from the pyrolyzed WPCBs. The effect of pyrolysis temperature and time on the recovery efficiency of valuable metals was investigated. Additionally, the characterization for morphology and surface elemental distribution of pyrolysis residues was carried out to investigate the pyrolysis mechanism. The plastic fiber boards turned into black carbides, and they can be easily separated from the metals by manual. The results indicate that 91.2%, 96.1% and 94.4% of Cu, Sn and Pb can be recovered after microwave pyrolysis at 700 °C for 60 minutes. After pyrolysis, about 79.8%(mass)solid products, 11.9%(mass) oil and 8.3%(mass) gas were produced. These gas and oil can be used as fuel and raw materials of organic chemicals, respectively. This process provides an efficient and energy-saving technology for recovering valuable metals from WPCBs. | Yubo Liu Jialiang Zhang Xu Yang Wenguang Yang Yongqiang Chen Chengyan Wang | 2021 | Chinese Journal of Chemical Engineering2021，34，12： | 2 |
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