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Prevalence of Noise-Induced hearing Loss related to the Mills in the markets of the Municipality of Parakou in 2021

International Journal of Otolaryngology and head & Neck Surgery 2024年第1期13卷 1-10页

作者： Fatiou Alabi Bouraïma Cocouvi Bruno Ametonou Ulrich Bidossèssi Vodouhe François Avakoudjo Jorelle Wafo marius Claude Flatin Spéro h. r. hounkpatin Wassi Adjibabi Faculty of Medicine University of Parakou Parakou Benin Faculty of health Sciences University of Abomey-Calavi Cotonou Benin

Introduction: Noise is the second leading cause of hearing loss in adults after presbycusis. The objective of this work was to study hearing loss induced by the noise of mills in the markets of Parakou. Methods: This was a descriptive and analytical cross-sectional study, conducted from February 3 to June 3, 2021 in the markets of Parakou. It concerned millers and sellers located within a 5 meter radius around the mills and among whom pure-tone audiometry was performed to detect a hearing loss. Subjects with no particular medical health history, under 55 years of age and having been working in these markets since more than 12 months, were included. results: In this study, 103 subjects were selected, including 43 millers and 61 sellers. Their average age was 29 ± 13 years. The sex ratio was 0.49. The average length of service in the profession was 8 years with the extremes of 3 months and 47 years. They were exposed to noise on average 10 hours per day and 6 days a week. The average duration of weekly noise exposure was 23 h 28 min ± 13 h 32 min with the extremes of 5 h 00 min and 52 h 30 min. The average level of noise exposure was 90 dB with the extremes of 72 and 110 dB. 24 subjects reported symptoms related to noise such as headache, tinnitus, and hearing loss, with respective proportions of 22.33%, 20.39% and 06.80%. The prevalence of noise-related hearing loss was 26.21% (n = 27/103). Subjects with a notch at 4000 hz and normal Average hearing Loss (AhL) (20.39%) had a seven-time greater risk of developing noise-induced hearing loss (Or = 6.58;95% CI [2.54 - 18.8], p Conclusion: hearing loss related to the noise of mills affected both millers and sellers near the mills in markets, hence the importance of regulating mills.

关键词： Noise-Induced hearing Loss Mills markets Parakou

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Preparation and performance evaluation of the slickwater using novel polymeric drag reducing agent with high temperature and shear resistance ability

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Petroleum Science 2024年第2期21卷 1113-1121页

作者： Ming-Wei Zhao Zhen-Feng ma Cai-Li Dai WeiWu Yong-Quan Sun Xu-Guang Song Yun-Long Cheng Xiang-Yu Wang National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao266580ShandongChina Shandong Key Laboratory of Oilfield Chemistry China University of Petroleum(East China)Qingdao266580ShandongChina Sinopec Shengli Oilfield Dongying257001ShandongChina Department of Chemical and materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada East China Petroleum Bureau of Sinopec Nanjing210011JiangsuChina

Slickwater fracturing fluids are widely used in the development of unconventional oil and gas resources due to the advantages of low cost,low formation damage and high drag reduction ***,their performance is severely affected at high *** reducing agent is the key to determine the drag reducing performance of *** this work,in order to further improve the temperature resistance of slickwater,a temperature-resistant polymeric drag reducing agent(PDrA)was synthesized and used as the basis for preparing the temperature-resistant *** slickwater system was prepared with the compositions of 0.2 wt%PDrA,0.05 wt%drainage aid nonylphenol polyoxyethylene ether phosphate(NPEP)and 0.5 wt%anti-expansion agent polyepichlorohydrindimethylamine(PDM).The drag reduction ability,rheology properties,temperature and shear resistance ability,and core damage property of slickwater were systematically studied and *** contrast to on-site drag reducing agent(DrA)and hPAM,the temperature-resistant slickwater demonstrates enhanced drag reduction efficacy at 90℃,exhibiting superior temperature and shear resistance ***,the drag reduction retention rate for the slickwater achieved an impressive 90.52%after a 30-min shearing ***,the core damage is only 5.53%.We expect that this study can broaden the application of slickwater in high-temperature reservoirs and provide a theoretical basis for field applications.

关键词： Unconventional resources Polymeric drag reducing agent Slickwater high drag reduction rate Temperature resistance

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Albizzia chinensis(Osbeck)Merr extract YS ameliorates ethanol-induced acute gastric ulcer injury in rats by regulating NrF2 signaling pathway

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Animal Models and Experimental Medicine 2024年第3期7卷 275-282页

作者： Bo Tang Liangning Li Yuanzhi Yu Guibin Wang Shuanggang ma Shishan Yu Jianjun Zhang Institute of materia Medica Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina State Key Laboratory of Digestive health BeijingChina State Key Laboratory of Bioactive Substance and Function of Natural Medicines BeijingChina

Background:Around the world,there is a high incidence of gastric ***,an extract from the Chinese herb Albizzia chinensis(Osbeck)Merr,has potential therapeutic applications for gastrointestinal *** we elucidated the protective effect and underlying mechanism of action of YS on gastric ulcer in rats injured by ***:The ethanol-i nduced gastric ulcer rat model was used to assess the protective effect of YS.A pathological examination of gastric tissue was performed by h&E ***-1 cells damaged by hydrogen peroxide were used to simulate oxidative damage in gastric mucosal epithelial *** NrF2 was knocked down using small interfering *** was used to detect ubiquitination of ***-i mmunoprecipitation was used to detect the NrF2-Keap1 ***:YS(10 and 30 mg/kg,i.g.)significantly reduced the ulcer index,decreased MDA level,and increased SOD and GSh levels in gastric tissues damaged by *** promoted NrF2 translocation from cytoplasm to nucleus and enhanced the NQO1 and hO-1 expression levels in injured rat gastric *** addition,YS regulated NQO1 and hO-1 via NrF2 in h_(2)O_(2)-i nduced oxidative injured GES-1 *** studies on the underlying mechanism indicated that YS reduced the interaction between NrF2 and Keap1 and decreased ubiquitylation of NrF2,thereby increasing its stability and expression of downstream ***2 knockdown abolished the effect of YS on MDA and SOD in GES-1 cells treated with h_(2)O_(2).Conclusion:YS reduced the NrF2-Keap1 interaction,promoting NrF2 translocation into the nucleus,which increasing the transcription and translation of NQO1 and hO-1 and improved the antioxidant capacity of rat stomach.

关键词： antioxidative ethanol gastric ulcer NrF2 YS

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Electronic structure regulation and built-in electric field synergistically strengthen photocatalytic nitrogen fixation performance on Ti-BiOBr/TiO_(2)heterostructure

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rare Metals 2024年第3期43卷 1125-1138页

作者： ru-Qi Li Yu-Jie Bian Chun-Ming Yang Li Guo Tao-Xia ma Chuan-Tao Wang Feng Fu Dan-Jun Wang College of Chemistry and Chemical Engineering Yan’an UniversityYan’an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank CoalYan’an716000China

At present,industrial synthetic ammonia was still obtained through the hubble-Bosch process,with large energy *** is a research hotspot to realize green synthetic ammonia by using solar *** difficulty of photocatalytic ammonia synthesis was that the photo-excited electrons have not enough energy to active N≡*** this study,Ti was doped into BiOBr by one-step hydrothermal method,which was oxidized into TiO_(2)when the doping amount reaches the maximum,in situ forming Ti_(0.31)B_(0.69)OB/TiO_(2)*** from the synergistic effect of Ti doping and S-scheme heterojunction,the synthetic ammonia efficiency of Ti_(0.31)B_(0.69)OB/TiO_(2)-11.96 reached 1.643 mmol·g_(cat)^(-1)at mild conditions and without hole scavenger for up to 7 h,the efficiency of synthetic ammonia is 115 times,10.5 times and 3.3 times of that of BiOBr,Ti_(0.31)B_(0.69)OB and TiO_(2),***,DFT calculation confirms that Ti doping accurately refine the electronic structure of BiOBr,facilitate nitrogen adsorption activation and reduce hydrogenation reaction energy barrier,thus accelerating the reaction kinetics of photocatalytic nitrogen reduction(Nrr),Meanwhile,constructing S-scheme heterojunction boosts the separation and transfer of photogenerated electron-hole pairs,improving the reduction ability of electrons in the conduction band of TiO_(2)and the oxidation ability of holes in the valence band of Ti_(0.31)B_(0.69)OB.

关键词： S-scheme heterostructure Electronic structure regulation Built-in electric field Synergistical stren4gthening Photocatalytic nitrogen fixation

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revealing precipitation behavior and mechanical response of wire-arc directed energy deposited Mg-Gd-Y-Zr alloy by tailoring aging procedures

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International Journal of Extreme manufacturing 2024年第4期6卷 176-200页

作者： Xinzhi Li Xuewei Fang Zhiyan Zhang Shahid Ghafoor ruikai Chen Yi Liu Kexin Tang Kai Li Minghua ma Jiahao Shang Ke huang State Key Laboratory for manufacturing Systems Engineering School of Mechanical EngineeringXi'an Jiaotong UniversityXi'an 710049 ShaanxiPeople's Republic of China

Mg-Gd-Y-Zr alloy,as a typical magnesium rare-earth(Mg-rE)alloy,is gaining popularity in the advanced equipment manufacturing fields owing to its noticeable age-hardening properties and high specific ***,it is extremely challenging to prepare wrought components with large dimensions and complex shapes because of the poor room-temperature processability of Mg-Gd-Y-Zr ***,we report a wire-arc directed energy deposited(DED)Mg-10.45Gd-2.27Y-0.52Zr(wt.%,GW102K)alloy with high rE content presenting a prominent combination of strength and ductility,realized by tailored nanoprecipitates through an optimized heat treatment ***,the solution-treated sample exhibits excellent ductility with an elongation(EL)of(14.6±0.1)%,while the aging-treated sample at 200°C for 58 h achieves an ultra-high ultimate tensile strength(UTS)of(371±1.5)***,the aging-treated sample at 250°C for 16 h attains a good strength-ductility synergy with a UTS of(316±2.1)MPa and a EL of(8.5±0.1)%.Particularly,the evolution mechanisms of precipitation response induced by various aging parameters and deformation behavior caused by nanoprecipitates type were also systematically *** excellent ductility resulted from coordinating localized strains facilitated by active slip *** the ultra-high strength should be ascribed to the dense nano-β'hampering dislocation ***,the shearable nano-β1 contributed to the good strength-ductility *** work thus offers insightful understanding into the nanoprecipitates manipulation and performance tailoring for the wire-arc DED preparation of large-sized Mg-Gd-Y-Zr components with complex geometries.

关键词： wire-arc directed energy deposition Mg-Gd-Y-Zr alloy precipitation response prominent strength-ductilitycombination deformation mechanism

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Active sites and reaction mechanisms of COhydrogenation on zinc-based mixed oxide catalysts

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Science China Chemistry 2024年

作者： Zhuo-Yan Yao Si-Cong ma Zhi-Pan Liu Shanghai Key Laboratory of Molecular Catalysis and Innovative materials Key Laboratory of Computational Physical ScienceDepartment of Chemistry Fudan University State Key Laboratory of Metal Organic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai Qi Zhi Institution

The conversion of C1 molecules, COx（CO and CO2）, to valuable chemical products has garnered ever-increasing *** many routes, the hydrogenation via thermal catalysis is particularly promising as a key clean energy technology with the increasing supply of green h2. Zinc-based mixed oxide catalysts exhibit exceptional catalytic performance in the COxhydrogenation to value-added hydrocarbons, especially in combination with zeolite. This review overviews the recent achievements in understanding the active sites and reaction mechanisms of COxhydrogenation on zinc-based mixed oxide catalysts, focusing on three most-studied zinc-based mixed oxide catalysts, namely ZnCrOx, ZnAlOxand ZnZrOx. The challenges and future directions are also discussed.

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Performance decay prediction model of proton exchange membrane fuel cell based on particle swarm optimization and gate recurrent unit

Energy and AI

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Energy and AI 2024年第3期17卷 487-494页

作者： Ziliang Zhao Yifan Fu Ji Pu Zhangu Wang Senhao Shen Duo ma Qianya Xie Fojin Zhou College of Transportation Shandong University of Science and TechnologyQingDao266590China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory FoShan528000China

The durability of proton exchange membrane fuel cells (PEMFC) is an important issue that restricts their large-scale application. To improve their reliability during use, this paper proposes a short-term performance degradation prediction model using particle swarm optimization (PSO) to optimize the gate recurrent unit (GrU). After training using only the data from the first 300 h, good prediction accuracy can be achieved. Compared with the traditional GrU algorithm, the proposed prediction method reduces the root mean square error (rMSE) and mean absolute error (maE) of the prediction results by 44.8 % and 35.1 %, respectively. It avoids the problem of low accuracy in predicting performance during the temporary recovery phase in traditional GrU models, which is of great significance for the health management of PEMFC.

关键词： (Gate recurrent unit)GrU (Proton exchange membrane fuel cells)PEMFC Prediction (Particle swarm optimization)PSO

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DLX3(Q178r)mutation delays osteogenic differentiation via h19/mir-29c-3p/KDM5B axis in TDO-iPSCs-derived MSCs

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Genes & Diseases 2024年第4期11卷 49-52页

作者： Liying Dong Na Zhao Dongmei Wang Meng Wang Yixin Zhang Liangjie Sun Chong Ding Yixiang Wang Zeyun ma Central Laboratory Peking University School and Hospital of StomatologyBeijing 100081China Department of Oral and maxillofacial Surgery Peking University School and Hospital of StomatologyBeijing 100081China National Engineering Laboratory for Digital and material Technology of Stomatology Peking University School and Hospital of StomatologyBeijing 100081China Beijing Key Laboratory of Digital Stomatology Peking University School and Hospital of StomatologyBeijing 100081China The Second Clinical Division Peking University School and Hospital of StomatologyBeijing 100081China Department of VIP Service Peking University School and Hospital of StomatologyBeijing 100081China Department of restorative Dentistry and Biomaterials Sciences Harvard School of Dental MedicineBostonMA 02115USA Department of Prosthodontics Fudan UniversityShanghai 200001China Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases Shanghai Stomatological HospitalFudan UniversityShanghai 200001China

Tricho-dento-osseous(TDO)syndrome is a rare autosomal dominant disease resulting from distal-less homeobox 3(DLX3)mutation.1,2 Accumulative bone density in alveolar bone is a clinically favorable phenotype for TDO ***... 详细信息

关键词： patients clinically alveolar

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Sequence-Controlled Synthesis of Alternating Poly(ester amide)s using Water as Control Agent in One-Pot

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Chinese Journal of Polymer Science 2024年第8期42卷 1015-1020页

作者： Tao Liu Fang-Fang Niu Kan Cheng Yu-Min Xia Bo-Mou ma Xue-Li Wang Jian-Yong Yu Yong he State Key Laboratory for Modification of Chemical Fibers and Polymer materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

Poly(ester amide)s(PEAs)attract much attention as a new kind of biodegradable ***,the synthesis of PEAs with sequence-regulated chain structures is still complicated due to the multistep polymerization,high monomer purity,as well as the usage of organic solvents,which greatly inhibits its development and ***,a one-pot strategy without solvent was developed to synthesize the alternating PEA fromα,ω-amino alcohol and dicarboxylic acid by sequential polycondensation,where water was used as the controlling agent for amidation and ***,the amidation and esterification were controlled to proceed in turn by adding or removing water,realizing the one-pot preparation of alternating *** resultant PEA is characterized by^1h-and^(13)C-NMr,and its chain structure is confirmed to be highly quasi-alternating similar to alternating PEAs prepared by classical methods The evaluations from DSC and Dma demonstrate that the properties of quasi-alternating PEA(T_(m)=102℃,Δh_(m)=30J·g^(-1))are far superior to those of random PEA(T_(m)=72℃,Δh_(m)<1 J·g^(-1)).

关键词： Biodegradable macromolecules Polymer architectures Sequence-controlled synthesis One-pot polymerization

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Plasma-assisted aerogel interface engineering enables uniform Zn^(2+)flux and fast desolvation kinetics toward zinc metal batteries

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Journal of Energy Chemistry 2024年第8期95卷 29-38,I0002页

作者： Zijian Xu Zhenhai Shi Zhan Chang Fan Feng Zhuanyi Liu Dongkun Chu Jianguo ren Zi-Feng ma Suli Chen Tianxi Liu Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material EngineeringJiangnan UniversityWuxi 214122JiangsuChina Shanghai Electrochemical Energy Devices research Center Department of Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China BTr New material Group Co. LTD.Shenzhen 518000GuangdongChina

The poor reversibility of Zn anodes induced by dendrite growth,surface passivation,and corrosion,severely hinders the practical applicability of Zn metal *** address these issues,a plasmaassisted aerogel(PAG)interface engineering was proposed as efficient ion transport modulator that can simultaneously regulate uniform Zn^(2+)flux and desolvation behavior during battery *** PAG with ordered mesopores acted as an ion sieve to homogenize Zn deposition and accelerate Zn^(2+)flux,which is favorable for corrosion resistance and dendrite ***,the plasma-assisted aerogel with abundant hydrophilic groups can facilitate the desolvation kinetics of Zn^(2+)due to the multiple hydrogen-bonding interaction with the activated water molecules,thus accelerating the Zn^(2+)migration ***,the Zn/Zn cell assembled with PAG-modified separator demonstrates stable plating and stripping behavior(over 1400 h at 1 ma cm^(-2))and high Coulombic efficiency(99.8%at1 ma cm^(-2)after 1100 cycles),and the Zn‖MnO_(2)full cell shows excellent long-term cycling stability and maintains a high capacity of 154.9 ma h g^(-1)after 1000 cycles at 1 A g^(-1).This study provides a feasible approach for the large-scale fabrication of aerogel functionalized separators to realize ultra-stable Zn metal batteries.

关键词： Zn metal batteries Aerogel interface Plasma Zn^(2+)migration kinetics Dendrite growth

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