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采用钛阴极从碱液中旋流电积回收镓

Transactions of Nonferrous Metals Society of China 2024年第3期34卷 1027-1036页

作者：许志鹏刘左伟郭学益李栋邹铭金田庆华中南大学冶金与环境学院长沙410083 有色金属资源循环利用国家地方联合工程研究中心长沙410083

为了抑制浓差极化并提高电流效率,提出一种旋流电解法回收镓的工艺。通过电化学研究确定GaO_(2)^(-)在120 g/L NaOH溶液中的扩散系数为1.65×10^(-7)cm^(2)/s。考察各种参数对镓电积的影响,确定电积的最佳条件为:钛阴极、电流密度750 A/... 详细信息

为了抑制浓差极化并提高电流效率,提出一种旋流电解法回收镓的工艺。通过电化学研究确定GaO_(2)^(-)在120 g/L NaOH溶液中的扩散系数为1.65×10^(-7)cm^(2)/s。考察各种参数对镓电积的影响,确定电积的最佳条件为:钛阴极、电流密度750 A/m^(2)、镓浓度39.9 g/L、NaOH浓度120 g/L、循环流量200L/h。在这些条件下,电积的电流效率和镓回收率分别为47.9%和90.2%。析出的镓较易从阴极上分离,经过洗涤后的镓最终纯度为99.993%。镓旋流电积能耗约为9048 kW·h/t。该研究表明旋流电积是一种具有高电流效率和低能耗的有前途的镓生产工艺。

关键词：镓旋流电积砷化镓废料电流效率

Effect of relaxation time on the squeezed correlations of bosons for evolving sources in relativistic heavy-ion collisions

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Nuclear Science and Techniques 2022年第2期33卷 87-92页

作者： Wei-Ning Zhang peng-zhi xu School of Physics Dalian University of TechnologyDalian 116024China College of Computer Science and Technology Jilin Normal UniversitySiping 136000China

The squeezed back-to-back correlation(SBBC)of a boson-antiboson pair is sensitive to the time distribution of the particle-emitting source,and the SBBC function for an evolving source is expected to be affected by the relaxation time of the *** this study,we investigated the effect of relaxation time on the SBBC *** propose a method for calculating the SBBC function with relaxation-time approximation for evolving *** functions of D^(0)D^(-0)in relativistic heavy-ion collisions were investigated using a hydrodynamic *** found that the relaxation time reduces the amplitudes of the SBBC *** becomes apparent for long relaxation times and large initial relative deviations of the chaotic and squeezed amplitudes from their equilibrium values in the temporal steps.

关键词： Relaxation time Squeezed back-to-back correlation Evolving source Relativistic heavy-ion collisions

Research and application of the angular rolling technology for plate mill

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Advances in Manufacturing 2023年第3期11卷 462-476页

作者： zhi-Jie Jiao Jun-Yi Luo zhi-Qiang Wang zhi-peng xu Chun-Yu He Zhong Zhao State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819People's Republic of China

Angular rolling technology can overcome the size limitation of plate mill equipment and product heavy steel plate with large unit weight or improve the production efficiency of small width spreading ratio *** the DEFORM software,the numerical simulation study of the angular rolling process was carried out,and the relation laws of the width,rolling force and strain of the rolled piece under different angular rolling process conditions were *** simulation results show that with the rotation angle increasing,the width of the rolled piece *** with the conventional rolling process,the rolling force changes gradually during the biting and throwing stage of the angular rolling *** the rotation angle increasing,both the equivalent strains in the thickness direction and in the width direction gradually *** to the pattern and dimension's changing formula in the double-pass angular rolling process,the prediction model of angle,reduction and width spreading is *** opening value of side guide is set for the rotation angle *** one 5000 mm heavy plate mill,the automation control system was modified,and the angular rolling technology was applied *** absolute deviation of target width does not exceed±20 mm and the relative deviation does not exceed 1%.The large unit weight plate that cannot be rolled with traditional process,can be produced now,and the annual output increases by 10000 t.

关键词： Plate mill Angular rolling Numerical simulation Width spreading Prediction model Online application

Identification of a novel splice site mutation in the DNAAF4 gene of a Chinese patient with primary ciliary dyskinesia

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Asian Journal of Andrology 2023年第6期25卷 713-718页

作者： Yang xu Jing Wang Ji-Hai Liu Qing-Qiang Gao Bing Wang zhi-peng xu Department of Andrology Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China

Primary ciliary dyskinesia(PCD)is a rare hereditary orphan condition that results in variable phenotypes,including *** 50 gene variants are reported in the scientific literature to cause PCD,and among them,dynein axonemal assembly factor 4(DNAAF4)has been recently ***4 has been implicated in the preassembly of a multiunit dynein protein essential for the normal function of locomotory cilia as well as *** the current study,a single patient belonging to a Chinese family was recruited,having been diagnosed with PCD and *** affected individual was a 32-year-old male from a nonconsanguineous *** also had abnormal spine structure and spinal cord bends at angles diagnosed with *** reports,laboratory results,and imaging data were ***-exome sequencing,Sanger sequencing,immunofluorescence analysis,hematoxylin-eosin staining,and in silico functional analysis,including protein modeling and docking studies,were *** results identified DNAAF4 disease-related variants and confirmed their *** analysis through whole-exome sequencing identified two pathogenic biallelic variants in the affected *** identified variants were a hemizygous splice site c.784-1G>A and heterozygous 20.1 Kb deletion at the DNAAF4 locus,resulting in a truncated and functionless DNAAF4 *** analysis indicated that the inner dynein arm was not present in the sperm flagellum,and sperm morphological analysis revealed small sperm with twisted and curved flagella or lacking *** current study found novel biallelic variants causing PCD and asthenoteratozoospermia,extending the range of DNAAF4 pathogenic variants in PCD and associated with the etiology of *** findings will improve our understanding of the etiology of PCD.

关键词： DNAAF primary ciliary dyskinesia scoliosis splice site

Modulation of SIRT1 expression improves erectile function in aged rats

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Asian Journal of Andrology 2022年第6期24卷 666-670页

作者： Wen Yu Jing Wang Yu-Tian Dai Bin Wang Yang xu Qing-Qiang Gao zhi-peng xu Institute of Andrology Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210000China

Silent information regulator 2-related enzyme 1(SIRT1)is an aging-related protein activated with ***,we evaluated the role of SIRT1 in aging-related erectile *** expression of SIRT1 was modulated in aged Sprague-Dawley rats following intragastric administration of resveratrol(Res;5 mg kg^(-1)),niacinamide(NAM;500 mg kg^(-1))or Res(5 mg kg^(-1))+tadalafil(Tad;phosphodiesterase-5[PDE5]inhibitor;5 mg kg^(-1))for 8 ***,we determined erectile function by the ratio of intracavernosal pressure(IcP)/mean systemic arterial pressure(MAP).Cavernosal tissues were extracted to evaluate histological changes,cell apoptosis,nitric oxide(NO)/cyclic guanosine monophosphate(cGMP),the superoxide dismutase(SOD)/3,4-methylenedioxyamphetamine(MDA)level,and the expression of SIRT1,p53,and forkhead box O3(FOX03a)using immunohistochemistry,terminal deoxynucleotidyl transferase(TdT)-mediated 2'-deoxyuridine 5'-triphosphate(dUTP)nick-end labeling(TUNEL),enzyme-linked immunosorbent assays,and western blot *** with the control,Res treatment significantly improved erectile function,reflected by an increased content of smooth muscle and endothelium,NO/cGMP and SOD activity,and reduced cell apoptosis and MDA *** effect of Res was improved by adding *** addition,the protein expression of SIRT1 was increased in the Res group,accompanied by decreased p53 and FOxO3a *** addition,inhibition of SIRT1 by NAM treatment resulted in adverse results compared with Res ***1 activation ameliorated aging-related erectile dysfunction,supporting the potential of SIRT1 as a target for erectile dysfunction treatment.

关键词： apoptosis erectile function nitric oxide/cyclic guanosine monophosphate signaling oxidative stress SIRT1 expression

Multiparameter Numerical Investigation of Two Types of Moving Interactions Between the Deep-Sea Mining Vehicle Track Plate and Seabed Soil:Digging and Rotating Motions

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China Ocean Engineering 2024年第3期38卷 408-423页

作者： SUN peng-fei LYU Hai-ning YANG Jian-min xu zhi-yong State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Yazhou Bay Institute of Deepsea SCI-TECH Shanghai Jiao Tong UniversitySanya 572024China Institute of Marine Equipment Shanghai Jiao Tong UniversityShanghai 200240China

To ensure the safe performance of deep-sea mining vehicles(DSMVs),it is necessary to study the mechanical characteristics of the interaction between the seabed soil and the track *** rotation and digging motions of the track plate are important links in the contact between the driving mechanism of the DSMV and seabed *** this study,a numerical simulation is conducted using the coupled Eulerian–Lagrangian(CEL)large deformation numerical method to investigate the interaction between the track plate of the DSMV and the seabed soil under two working conditions:rotating condition and digging ***,a soil numerical model is established based on the elastoplastic mechanical characterization using the basic physical and mechanical properties of the seabed soil obtained by in situ ***,the soil disturbance mechanism and the dynamic mechanical response of the track plate under rotating and digging conditions are obtained through the analysis of the sensitivity of the motion parameters,the grouser structure,the layered soil features and the soil *** results indicate that the above parameters remarkably influence the interaction between the DSMV and the seabed ***,it is important to consider the rotating and digging motion of the DSMV in practical engineering to develop a detailed optimization design of the track plate.

关键词： deep-sea mining vehicle rotating motion digging motion track plate-seabed soil interaction CEL numerical method

Bio-inspired inorganic-protein coating on Mg-based biomaterials for bioengineering applications

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Science China Materials 2024年第5期67卷 1678-1680页

作者： xuwen peng Haolan xu Department of Chemistry Engineering Tsinghua UniversityBeijing100084China Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaT6G 1H9Canada Future Industries Institute UniSA STEMUniversity of South AustraliaMawson Lakes CampusAdelaideSouth Australia5095Australia

Developing smart and advanced functional materials inspired by the unparalleled complexity and efficiency of biological tissues has received much attention across various *** alloys,particularly pure magnesium,have emerged as notable candidates in orthopedics and dentistry due to their exceptional biocompatibility,degradability,and ability to promote bone regeneration[1].However,the highly reactive chemical nature of magnesium and its rapid degradation upon exposure to water.

关键词： coating alloys magnesium

The application of intraoperative neurophysiological monitoring in selective dorsal neurotomy for primary premature ejaculation:a prospective single-center study

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Asian Journal of Andrology 2023年第1期25卷 137-142页

作者： Qing-Lai Tang Tao Song You-Feng Han Bai-Bing Yang Jian-Huai Chen zhi-peng xu Chun-Lu xu Yang xu Wen Yu Wei Qiu Jiong Shi En-Si Zhang Yu-Tian Dai Department of Andrology Drum Tower Clinical Medical CollegeNanjing Medical UniversityNanjing 210008China Department of Urology The Affiliated Jiangning Hospital of Nanjing Medical UniversityNanjing 211100China Department of Pathology The Affiliated Jiangning Hospital of Nanjing Medical UniversityNanjing 211100China Department of Pathology Drum Tower Clinical Medical CollegeNanjing Medical UniversityNanjing 210008China

Selective dorsal neurotomy(SDN)is a surgical treatment for primary premature ejaculation(PE),but there is still no standard surgical procedure for selecting the branches of the dorsal penile nerves to be *** performed this study to explore the value of intraoperative neurophysiological monitoring(IONM)of the penile sensory-evoked potential(PSEP)for standard surgical procedures in *** hundred and twenty primary PE patients undergoing SDN were selected as the PE group and 120 non-PE patients were selected as the normal *** PSEP was monitored and compared between the two groups under both natural and general anesthesia(GA)*** addition,patients in the PE group were randomly divided into the IONM group and the non-IONM *** SDN surgery,PSEP parameters of the IONM group were recorded and *** differences in PE-related outcome measurements between the perioperative period and 3 months'postoperation were compared for the PE patients,and the differences in effectiveness and complications between the IONM group and the non-IONM group were *** results showed that the average latency of the PSEP in the PE group was shorter than that in the normal group under both natural and GA states(P<0.001).Three months after surgery,the significant effective rates in the IONM and non-IONM groups were 63.6%and 34.0%,respectively(P<0.01),and the difference in complications between the two groups was significant(P<0.05).IONM might be useful in improving the short-term therapeutic effectiveness and reducing the complications of SDN.

关键词： intraoperative neurophysiological monitoring primary premature ejaculation selective dorsal neurotomy

Unraveling the biological link between diabetes mellitus and prostate cancer:Insights and implications

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World Journal of Diabetes 2024年第6期15卷 1367-1373页

作者： Jian Li zhi-peng Li Si-Si xu Wei Wang Department of Interventional Oncology Municipal Hospital Affiliated to Taizhou UniversityTaizhou 318000Zhejiang ProvinceChina School of Medicine Taizhou UniversityTaizhou 318000Zhejiang ProvinceChina

This article is a comprehensive study based on research on the connection between diabetes mellitus(DM)and prostate cancer(PCa).It investigates the potential role of DM as an independent risk factor for PCa,delving into the biological links,including insulin resistance and hormonal *** paper critically analyzes previous studies that have shown varying results and introduces mendelian randomization as a method for establishing *** emphasizes the importance of early DM screening and lifestyle modifications in preventing PCa,and proposes future research directions for further understanding the DM-PCa relationship.

关键词： Biological mechanisms Diabetes mellitus Mendelian randomization Prevention prostatic cancer Treatment