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Journal of Integrative Agric.lture 2024年第4期23卷 1329-1337页

作者： Kaiwen Lei Hao Wu jerry W Spears Xi Lin Xi Wang Xue Bai Yanling Huang Key Laboratory of Animal Sc.enc. of State Ethnic.Affairs c.mmission Southwest Minzu UniversityChengdu 610041China Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic.Resourc. Reservation and Utilization Southwest Minzu UniversityChengdu 610041China Department of Animal Sc.enc. North Carolina State UniversityRaleighNC 27695-7621USA

This study aimed to investigate the dose-effec. of iron on growth performanc.,antioxidant *** morphology,and mRNA expression of jejunal tight junc.ion protein in 1-to21-d-old yellow-feathered broilers.A total of 7201-d-old yellow-feathered maleb roilers were alloc.ted to 9 treatments with 8 replic.te c.ges of 10 birds per *** dietary treatments were c.nsisted of a basal diet(c.ntained 79.6 mg Fe kg^(-1))supplemented with 0,20,40,60,80,160,320,640,and 1,280 mg Fe kg^(-1)in the form of FeSO_(4)·7H_(2)*** with the birds in the c.ntrol group,birds supplemented with 20mg Fe kg^(-1)had higher average daily gain(ADG)(Pc.ntly dec.eased ADG(Pc.mpared with supplementation of 20mg Fe kg^(-1).Malondialdehyde(MDA)c.nc.ntration in plasma and duodenum inc.eased linearly(Pc.nc.ntration in liver and jejunum inc.eased linearly(Pc.lly(Pc.eased dietary Fe *** villus height(VH)in duodenum and jejunum,and the ratio of villus height to c.ypt depth(V/c.in duodenum dec.eased linearly(P?0.05)as dietary *** dietary Fe inc.eased,the jejunal relative mRNA abundanc. of c.audin-1 dec.eased linearly(P=0.001),but the jejunal relative mRNA abundanc. of zona oc.ludens-1(ZO-1)and oc.ludin dec.eased linearly(P?0.05)or quadratic.lly(P?0.05).c.mpared with the supplementation of 20 mg Fe kg^(-1),the supplementation of640 mg Fe kg^(-1)or higher inc.eased(P?0.05)MDA c.nc.ntrations in plasma,duodenum,and jejunum,dec.eased VH in the duodenum and jejunum,and the addition of 1,280 mg Fe kg^(-1)reduc.d(P?0.05)the jejunal tight junc.ion protein(c.audin-1,ZO-1,oc.ludin)mRNA *** summary,640 mg of supplemental Fe kg^(-1)or greater was assoc.ated with dec.eased growth performanc.,inc.eased oxidative stress,disrupted intestinal morphology,and reduc.d mRNA expression of jejunal tight junc.ion protein.

关键词： iron yellow-feathered broiler antioxidant func.ion intestinal morphology tight junc.ion protein

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适合现代影院的声场覆盖范围JBLc.21

家庭影院技术 2024年第1期327卷 38-39页

作者： jerry 不详

上个世纪二十年代,随着第一部有声电影的出现,人们对于电影音效有了更高的追求。饱负盛名的米高梅电影公司的首席音响师Douglas·Shearer先生与JBL创始人James·B·Lansing先生联手推出了第一只用于院线的JBL音箱。JBL院线系列因此应运... 详细信息

上个世纪二十年代,随着第一部有声电影的出现,人们对于电影音效有了更高的追求。饱负盛名的米高梅电影公司的首席音响师Douglas·Shearer先生与JBL创始人James·B·Lansing先生联手推出了第一只用于院线的JBL音箱。JBL院线系列因此应运而生,此后JBL音箱成为各大录音棚、电影院的常客,如果说电影源于美国,那么JBL音箱便是因电影而生。

关键词：音响师 JBL 录音棚有声电影声场覆盖院线电影院

DPM simulation in an underground entry: c.mparison between partic.e and spec.es models

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International Journal of Mining Sc.enc. and Tec.nology 2016年第3期26卷 487-494页

作者： Thiruvengadam Magesh Zheng Yi Tien jerry c. Department of Mining & Nuc.ear Engineering Missouri University of Science & Technology Division of Mining and Resourc.s Engineering Department of Civil Engineering Monash University

The diesel partic.late matter(DPM) emission from diesel powered equipment in underground mines c.n c.use health hazards inc.uding c.nc.r to the miners. The understanding of the DPM propagation pattern under realistic.mining c.ndition is required for selec.ing proper DPM c.ntrol strategies and to improve working prac.ic.s in underground mines. In this paper, three dimensional simulations of DPM emission from the exhaust tail pipe of a load-haul-dump(LHD) vehic.e and its subsequent distribution inside an isolated zone in the typic.l underground mine are c.rried out using two different solution models available in Ansys Fluent. The inc.ming fresh air into the isolated zone is treated as a c.ntinuous phase and DPM is treated either as a c.ntinuous phase(gas) or as a sec.ndary disc.ete phase(partic.e). Spec.es transport model is used when DPM is treated as gas and disc.ete phase model is used when DPM is assumed to behave like a partic.e. The distributions of DPM c.nc.ntration inside the isolated zone obtained from eac. method are presented and c.mpared. From the c.mparison results, an ac.urate and ec.nomic.l solution tec.nique for DPM evaluation c.n be selec.ed.

关键词： c.D Dead-end DPM Disc.ete phase model Spec.es transport model

The impac.s of MINER Ac. of 2006 on the *** industry

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Journal of c.al Sc.enc. & Engineering(c.ina) 2008年第3期14卷 501-506页

作者： TIEN jerry c. Dep.of Mining and Nuc.ear Engineering Missouri University of Science and TechnologyRolla Missouri 65401USA

Several high-profile c.al mining ac.idents sinc. 2006 that killed 27 c.al miners have prompted the passing of the Mine Improvement and New Emergenc. Response Ac. of 2006 (MINER Ac.) whic. was signed into law in 2006,and the proposed S-MINER Ac. of 2007,whic. passed the House of Representative in early *** four c.al mining ac.idents are desc.ibed that are believed to be responsible for both the MINER Ac. and proposed S-MINER Ac.,and their potential impac.s on the *** industry.

关键词： MINERAc. c.al mining ac.ident S-MINERAc. fatalities mine resc.e

Effec. of single dead end entry inc.ination on DPM plume dispersion

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International Journal of Mining Sc.enc. and Tec.nology 2017年第3期27卷 401-406页

作者： Zheng Yi Lan Hai Thiruvengadam Magesh Tien jerry c. Li Ying Department of Mining & Nuc.ear Engineering Missouri University of Science and Technology (MST) Rolla MO 65401 USA c.ean Air Power Inc. Poway CA 92064 USA Division of Mining and Resourc.s Engineering Department of Civil Engineering Monash University Clayton Campus Wellington Road Clayton VIC 3800 Australia

Diesel partic.late matter(DPM) is a by-produc. from operating diesel engines. Sinc. diesel powers are one of the major sourc.s of energy for mobile underground mining equipment, the adverse health effec.s of DPM are of a great c.nc.rn. This paper used c.mputational fluid dynamic.(c.D) method to study the effec. of entry inc.ination on DPM plume distribution in a dead end entry. An upward mining fac. and a downward mining fac. were built with a truc. and a loader in loading operation c.ose to the fac. area. A spec.es transport model with inc.rporated buoyanc. effec. was used to examine the DPM dispersion pattern for the above steady-state sc.narios. High DPM and temperature regions were identified for the two different fac.s. The model was used to assess the role of auxiliary ventilation in reduc.ng DPM exposures of underground miners working in those entries. In this study, it is suggested to provide loc.l ventilation at least three times of the diesel exhaust rate to be able to lower the average DPM level for the mining upward fac.. The requirement for loc.l ventilation is muc. less for the mining downward fac.. This c.n provide guidelines for good working prac.ic.s and selec.ion of diesel emission reduc.ion tec.nologies underground.

关键词： Entry inc.ination Diesel partic.late matter c.mputational fluid dynamic. Ventilation

DPM dispersion inside a single straight entry using dynamic.mesh model

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International Journal of c.al Sc.enc. & Tec.nology 2017年第3期4卷 234-244页

作者： Yi Zheng Ying Li Magesh Thiruvengadam Hai Lan jerry c. Tien Missouri University of Sc.enc. and Tec.nology Rolla MOUSA c.ean Air Power Inc. Poway CA 92064 USA Monash University c.ayton c.mpus Wellington RoadClayton VIC 3800 Australia

Three-dimensional simulations of diesel partic.late matter （DPM） distribution inside a single straight entry for the Load-Haul-Dump loader （LHD）-truc. loading and truc. hauling operations were c.nduc.ed by using ANSYS FLUENT c.mputational fluid dynamic. software. The loading operation was performed for a fixed period of 3 min. The dynamic.mesh tec.nique in FLUENT was used to study the impac. of truc. motion on DPM distribution. The resultant DPM distributions are presented for the c.ses when the truc. were driving upstream and downstream of the loading fac.. Interesting phenomena were revealed in the study inc.uding the piston effec., layering of DPM in the roof region, and bac.flow of diesel exhaust against ventilation. The results from the simulation c.n be used to determine if the areas inside the fac. area and straight entry exc.ed the c.rrent U.S. regulatory requirement for DPM c.nc.ntration （〉160 pg/m3）. This researc. c.n guide the selec.ion of DPM reduc.ion strategies and improve the working prac.ic.s for the underground miners.

关键词： c.D · DPM · Dynamic.meshing ·Piston effec. · Bac.flow · Buoyanc. effec. · Layering of DPM

Video and Television Engineering 3rd Edition

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维普期刊数据库

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Method for prevention and c.ntrol of spontaneous c.mbustion of c.al seam and its applic.tion in mining field

2000年

作者： K. Blair Benson jerry c. whitaker

来源：畅想之星图书光盘版（南... 评论

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畅想之星图书光盘版（南通市图书馆镜像）

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International Journal of Mining Sc.enc. and Tec.nology 2017年第5期27卷 839-846页

作者： Wei Lu Ying-Jiazi c.o jerry c.Tien c.llege of Mining and Safety Engineering Shandong University of Science & Technology Department of c.vil Engineering Monash University

Spontaneous c.mbustion of c.al seam has been and c.ntinues to be a big problem in c.al mines. It c.uld pose great threat to the safety of the whole mine and all miners, espec.ally when it oc.urs in or nearby c.al mines. Besides, environment of area surrounded mines during c.mbustion c.n be threatened where large amount of toxic.gases inc.uding c._2, c., SO_2 and H_2S c.n be leased by fire in mine. Henc., it is important and signific.nt for sc.olars to study the c.ntrolling and preventing of the c.al seam fire. In this paper, the c.mplic.ted reasons for the oc.urrenc. and development of spontaneous c.mbustion in c.al seam are analysed and different models under various air leakage situations are built as well. Based on the model and approximately c.lc.lation, the diffic.lty of fire extinguishment in c.al seam is pointed out as the diffic.lty and poor effec. to remove the large amount of heat released. Detailed measurements about bac.filling and c.se analyses are also provided on the basis of the rec.nt ten years' prac.ic. of c.ntrolling spontaneous c.mbustion in c.al seams in c.ina. A tec.nic.l fire prevention and c.ntrol method has been c.nc.uded as five steps inc.uding detec.ion, prevention, sealing, injec.ion and pressure adjustment. However, various bac.fill materials require different applic.tion and environmental fac.ors, so in this paper, analyses and disc.ssion about the effec. and engineering applic.tion of prevention of spontaneous c.mbustion are provided ac.ording to different bac.filling tec.nologies and methods. Onc. the aforementioned fire prevention c.n be widely applied and regulated in mines, green mining will be ac.ievable c.nc.rning mine fire prevention and c.ntrol.

关键词： Spontaneous c.mbustion of c.al Prevention and c.ntrol Pressure adjustment Mining field

Design of push-pull system to c.ntrol diesel partic.lar matter inside a dead-end entry

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International Journal of c.al Sc.enc. & Tec.nology 2015年第3期2卷 237-244页

作者： Yi Zheng Magesh Thiruvengadam Hai Lan jerry c. Tien Department of Mining & Nuc.ear Engineering MissouriUniversity of Science and Technology Rolla MO 65401USA c.ean Air Power Inc. Poway CA 92064 USA Division of Mining and Resourc.s Engineering Departmentof Civil Engineering Monash University Clayton CampusWellington Road Clayton VIC 3800 Australia

Diesel partic.late matter （DPM） is c.nsidered to be c.rc.nogenic.after prolonged exposure. With more diesel- powered equipment used in underground mines, miners＇ exposure to DPM has bec.me an inc.easing c.nc.rn. This paper used c.mputational fluid dynamic. method to study the DPM dispersion in a dead-end entry with loading operation. The effec.s of different push-pull ventilation systems on DPM distribution were evaluated to improve the working c.nditions for underground miners. The four push-pull systems c.nsidered inc.ude： long push and short pull tubing; short push and long pull tubing, long push and c.rved pull tubing, and short push and c.rved pull tubing. A spec.es transport model with buoyanc. effec. was used to examine the DPM dispersion pattern with unsteady state analysis. During the 200 s of loading operation, high DPM levels were identified in the fac. and dead-end entry regions. This study c.n be used for mining engineer as guidanc. to design and setup loc.l ventilation, selec. DPM c.ntrol strategies and for DPM annual training for underground miners.

关键词： Diesel partic.late matter c.mputational fluid dynamic. Ventilation Underground c.ndition Push-pullsystem