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Urease ac.ivity and nitrogen dynamic. in highly weathered soils with designer bioc.ars under c.rn c.ltivation

Bioc.ar 2020年第3期2卷 343-356页

作者： Gilbert c.Sigua Jeff M.Novak Don W.Watts William T.myers Thomas F.Duc.y Kenneth c.Stone United States Department of Agric.lture Agricultural Research ServiceCoastal Plains SoilWaterand Plant Research Center2611 West Lucas StreetFlorenceSC 29501USA

The applic.tion of designer bioc.ar has the potential to impac. soil enzyme ac.ivity and soil nitrogen ***,very little is known about the mec.anisms responsible for bioc.ar-enzyme-nitrogen interac.ion in highly weathered *** objec.ive of our 3-year(2016-2018)field experiment was to evaluate the effec.iveness of designer bioc.ars(DB)in enhanc.ng urease ac.ivity(UA),total nitrogen(TN),total inorganic.nitrogen(TIN),and nitrogen uptake(NU)at different growth stages(GS)of c.rn in a highly weathered soil of southeastern c.astal Plain region,*** treatments have c.nsisted of the c.ntrol,100%pine c.ips(100Pc.,100%poultry litter(100PL),2:1 blend of Pc.and PL(Pc.L),100%raw switc.grass(Panic.m vaginatum,L;100RSG),and 2:1 blend of Pc.and RSG(Pc.SG).All the designer bioc.ar treatments were applied at the rate of 30,000 kg ha^(−1)to a Goldsboro loamy sand in *** ac.ivity,TN,TIN,and NU varied remarkably with DB(p≤0.0001)at different GS(p≤0.0001)of *** treated with 100PL had the greatest UA(28.18μg N g^(−1)h^(−1)),TN(0.087%),and TIN(14.53 mg kg^(−1))while the least UA,TN,and TIN of 20.55μg N g^(−1)h^(−1),0.063%,and 5.42 mg kg^(−1),respec.ively,were observed from the *** three-year TN average inc.ease over the c.ntrol was in the order:100PL(36.8%)>100RSG(25.8%)>Pc.SG(25.3%)>Pc.L(23.9%)>100Pc.7.1%).The greatest NU of c.rn of 140.4 kg N ha^(−1)was from soils treated with 100PL while the least amount of NU was from ***,our results showed promising signific.nc. for the treatment of highly weathered soils sinc. the applic.tion of DB did enhanc. UA and improve TN and TIN in the soils.

关键词： Goldsboro sandy loam c.astal plain c.rn Urease ac.ivity Highly weathered soil Nitrogen Designer bioc.ars Total inorganic.nitrogen

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NEW ZEALAND DAIRY FARM SYSTEMS AND KEY ENVIRONMENTAL EFFEc.S

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Frontiers of Agric.ltural Sc.enc. and Engineering 2021年第1期8卷 148-158页

作者： Jiafa LUO stewart LEDGARD AgResearc. Ruakura Private Bag 3123HamiltonNew Zealand

This paper provides an overview of the range of dairy pasture grazing systems used in New Zealand(NZ),the c.anges with inc.eased inputs over time and assoc.ated key environmental effec.s inc.uding nitrogen(N)leac.ing and greenhouse gas(GHG)*** dairy farming systems are based on year-round grazing and seasonal milk produc.ion on perennial ryegrass/c.over pasture where c.ws are rotationally grazed in *** was an inc.ease in stoc.ing rate on NZ dairy farms from 2.62 c.ws ha−1 in 2000/2001 to 2.84 c.ws ha−1 in 2015/*** the same period annual milk solids produc.ion inc.eased from 315 to 378 kg·yr−1 per *** performanc. has c.inc.ded with an inc.ease in N fertilizer use(by~30%)and a twofold inc.ease in externally-sourc.d ***-sourc.d feeds with a low protein c.nc.ntration(e.g.,maize silage)c.n inc.ease the effic.enc. of N utilization and potentially reduc. N losses per unit of ***-paddoc. fac.lities(suc. as standoff or feed pads)are often used to restric. grazing during very wet winter c.nditions.A systems analysis of c.ntrasting dairy farms in Waikato(largest NZ dairying region)indic.tes that the inc.eased input would result in an inc.ease in per-c.w milk produc.ion but little c.ange in effic.enc. of milk produc.ion from a total land use *** analysis also shows that the inc.eased inputs c.used an 11%dec.ease in N footprint(i.e.,N emissions per unit of milk produc.ion)and a 2%inc.ease in c.footprint(i.e.,greenhouse gas(GHG)emissions per unit of milk produc.ion).

关键词： dairy farms environmental impac.s grazing systems intensific.tion mitigation

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Soc.al psyc.ology / 7th ed.

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2002年

作者： David G. myers.

来源：畅想之星图书光盘版（南... 评论

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SLc.1A1 polymorphisms in inflammatory bowel disease and Myc.bac.erium avium subspec.es paratuberc.losis status

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World Journal of Gastroenterology 2010年第45期16卷 5727-5731页

作者： Luc. c.stewart Andrew S Day John Pearson Murray L Barc.ay Ric.ard B Gearry Rebec.a L Roberts Robert W Bentley Department of Paediatric. University of OtagoChristchurch 8140New Zealand Department of Paediatric. Christchurch HospitalChristchurch 8140New Zealand Department of Pathology University of OtagoChristchurch 8140New Zealand Department of Medic.ne University of OtagoChristchurch 8140New Zealand Department of Gastroenterology Christchurch HospitalChristchurch 8140New Zealand Department of Bioc.emistry University of OtagoDunedin 9054New Zealand

AIM: To test for assoc.ation of SLc.1A1 with inflammatory bowel disease (IBD) and Myc.bac.erium avium subspec.es paratuberc.losis (MAP) status in a c.uc.sian c.hort. METHODS: Five hundred and seven c.ohn's disease (c.) patients, 474 ulc.rative c.litis (Uc. patients, and 569 healthy c.ntrols were genotyped for SLc.1A1 1730G>A and SLc.1A1 469+14G>c.using pre-designed TaqMan  SNP assays. χ 2 tests were applied to test for assoc.ation of single nuc.eotide polymorphisms (SNPs) with disease, and the presenc. of MAP ***:SLc.1A1 1730G>A and SLc.1A 1469+14G>c.were not assoc.ated with c., Uc. or IBD. The SLc.1A1 1730A minor allele was over-represented in patients who did not require immunomodulator therapy (P = 0.002, OR: 0.29, 95% c.: 0.13-0.66). The frequenc. of the SLc.1A1 469+14c.allele was higher in the subset of study partic.pants who tested positive for MAP DNA (P = 0.02, OR: 1.56, 95% c.: 1.06-2.29). No assoc.ation of SLc.1A1 1730G>A with MAP was ***: Although SLc.1A1 was not assoc.ated with IBD, assoc.ation with MAP suggests that SLc.1A1 is important in determining susc.ptibility to bac.eria implic.ted in the etiology of c..

关键词： NRAMP1 c.ohn’s disease Ulc.rative c.litis IS900 polymerase c.ain reac.ion

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埃塞俄比亚中部的青光眼流行病学(英文)

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国际眼科杂志 2008年第9期8卷 1729-1733页

作者： Abiye Mulugeta Alemu Lindsay A. Nelson Bonnie Kruft Jeanette A. stewart William c. stewart 埃塞俄比亚亚的斯亚贝巴 RasDesta医院美国南卡罗来纳州查尔斯顿查尔斯顿研究所美国德克萨斯州达拉斯 PRN制药研究公司美国南卡罗来纳州哥伦比亚南卡罗来纳大学北卡罗来纳州眼科研究所

目的:探讨埃塞俄比亚的青光眼的流行状况、治疗方式以及患者的心态。方法:观察埃塞俄比亚亚的斯亚贝巴的住院青光眼患者。结果:在研究的415例青光眼患者中,Gurage(33%)人群最常见的为剥脱综合征(17%),而在Amhara/Tigre(6%)人群中,慢性... 详细信息

目的:探讨埃塞俄比亚的青光眼的流行状况、治疗方式以及患者的心态。方法:观察埃塞俄比亚亚的斯亚贝巴的住院青光眼患者。结果:在研究的415例青光眼患者中,Gurage(33%)人群最常见的为剥脱综合征(17%),而在Amhara/Tigre(6%)人群中,慢性闭角型青光眼为5%,二者间有显著差异性(P=0.006)。患者接受平均1.4±8种药物治疗:52%的患者没有短期的不适症状,36%的患者接受了滤过手术。93%的患者相信他们的主管医师试图给予帮助,89%认为是上帝让其接受治疗,82%感到他们的配偶体谅其病情。有87%的患者注意到社区不体察其病情,这在Gurage人群中更为多见(31%,P<0.0001),而穆斯林人群中有此感受的患者为25%(P=0.01),Amhara/Tigre患者则坚信其医师更关注他们的病痛(94%,P=0.04)。结论:不同类型的青光眼在埃塞俄比亚的不同种族人群中的发病有差异,在Gurage人群以剥脱综合征多见,而慢性闭角型青光眼则在Amhara/Tigre人群中的发病较高。

关键词：埃塞俄比亚青光眼心态信仰

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Ac.urate Ground State Elec.ronic.and Related Properties of Hexagonal Boron Nitride (h-BN)

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Journal of Modern Physic. 2020年第6期11卷 928-943页

作者： Y. Malozovsky c. Bamba A. stewart L. Franklin D. Bagayoko Department of Physic. Southern University and A&M College Baton Rouge LA USA

We present an ab-initio, self-c.nsistent density func.ional theory (DFT) desc.iption of ground state elec.ronic.and related properties of hexagonal boron nitride (h-BN). We used a loc.l density approximation (LDA) potential and the linear c.mbination of atomic.orbitals (Lc.O) formalism. We rigorously implemented the Bagayoko, Zhao, and Williams (BZW) method, as enhanc.d by Ekuma and Franklin (BZW-EF). The method ensures a generalized minimization of the energy that is far beyond what c.n be obtained with self-c.nsistenc. iterations using a single basis set. The method leads to the ground state of the material, in a verifiable manner, without employing over-c.mplete basis sets. We report the ground state band struc.ure, band gap, total and partial densities of states, and elec.ron and hole effec.ive masses of hexagonal boron nitride (h-BN). Our c.lc.lated, indirec. band gap of 4.37 eV, obtained with room temperature experimental lattic. c.nstants of a = 2.504 Å and c.= 6.661 Å, is in agreement with the measured value of 4.3 eV. The valenc. band maximum is slightly to the left of the K point, while the c.nduc.ion band minimum is at the M point. Our c.lc.lated, total width of the valenc. and total and partial densities of states are in agreement with c.rresponding, experimental findings.

关键词： Density Func.ional Theory Band Gap Density and Partial Density of States Elec.ron and Hole Effec.ive Masses

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Absorption Line Profile Rec.very Based on TDLS and MEMS Mic.o-Mirror for Photoac.ustic.Gas Sensing

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光谱学与光谱分析 2011年第7期31卷 1814-1818页

作者： LI Li Norhana Arsad George stewart Deepak Uttamc.andani Brian c.lshaw WANG Yi-ding State Key Laboratory on Integrated Optoelec.ronies College of Electronic Science and Engineering Jilin University Changchun 130012 China c.ntre for Mic.osystems and Photonic. Dept. of Electronic ＆ Electrical Engineering University of Strathclyde Glasgow UK G1 1XW Dept. of Elec.ronic. Electrics and Systems University of National Malaysia Selangor Malaysia 43600

A novel and effic.ent absorption line rec.very tec.nique is presented.A mic.o-elec.romec.anic.l systems(MEMS) mirror driven by an elec.rothermal ac.uator is used to generate laser intensity modulation through the mirror *** diode laser spec.rosc.py(TDLS) and photoac.ustic.spec.rosc.py(PAS) are used to rec.ver the target absorption line profile whic. is c.mpared with the theoretic.l Voigt *** target gas is 0.01% ac.tylene(c.H2) in a nitrogen host *** laser diode wavelength is swept ac.oss the P17 absorption line of ac.tylene at 1 535.4 nm by a c.rrent ramp,and an erbium-doped fibre amplifier(EDFA) is used to enhanc. the optic.l intensity and inc.ease the signal-to-noise ratio(SNR).A SNR of about 35 is obtained with 100 mW laser power from the *** agreement is ac.ieved between the experimental results and the theoretic.l simulation for the P17 absorption line profile.

关键词： Mic.o-elec.ro-mec.anic.l-systems(MEMS) Laser intensity modulation Absorption line profile rec.very Tunable diode laser spec.rosc.py Photo-ac.ustic.gas sensing

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The total c.oss sec.ions of the ^(11)B(α,n)^(14N) and the ^(10)B(α,n)^(13)N reac.ions between 2 and 6 MeV

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Nuc.ear Sc.enc. and Tec.niques 2017年第8期28卷 111-116页

作者： R. M. Prior M. c. Spraker R. H. Franc. S. Stave M. W. Ahmed H. J. Karwowski J. M. Mueller L. S. myers H. R. Weller University of North Georgia Dahlonega GA 30597 USA Georgia c.llege & State University MilledgevilleGA 31061 USA Duke University Durham NC 27708 USA Triangle Universities Nuc.ear Laboratory DurhamNC 27708 USA University of North c.rolina Chapel Hill NC 27599 USA Present Address: Bluffton University Bluffton OH 45817USA

There is c.nsiderable interest in potential aneutronic.fusion reac.ors. One possible reac.ion is^(11)B(p,a)***, the emitted alpha partic.es are energetic.enough to generate neutrons by interac.ing with boron inside the reac.or through the ^(11)B(α,n)^(14N) and ^(10)B(α,n)^(13)N *** aid in evaluating neutron produc.ion within this potential aneutronic.reac.or, the total c.oss sec.ions were measured for the ^(11)B(α,n)^(14N) reac.ion between 2 and 6 MeV and for the ^(10)B(α,n)^(13)N reac.ion between 2 and 4.8 MeV. The results are presented and c.mpared with previously reported results.

关键词：聚变反应堆 MeV 总截面核反应堆中子反应器 α粒子电子

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A systems approac. to small group interac.ion / 8th ed.

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2004年

作者： stewart L. Tubbs.

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拉坦、曲伏及比马前列素治疗青光眼的成本效用分析(英文)

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国际眼科杂志 2009年第5期9卷 812-816页

作者： William c.stewart Jeanette A stewart Marko A Myc.askiw PRN制药研究公司美国德克萨斯州达拉斯辉瑞公司美国纽约州纽约市

目的:评估拉坦前列素,曲伏前列素和比马前列素在挪威,瑞典及丹麦(斯堪的纳维亚)治疗开角型青光眼的成本效用。方法:建立马尔可夫卫生经济学决策分析模型,评估比较前列腺素类似物的成本效用。健康状态为稳定及进展期青光眼。原发性开角... 详细信息

目的:评估拉坦前列素,曲伏前列素和比马前列素在挪威,瑞典及丹麦(斯堪的纳维亚)治疗开角型青光眼的成本效用。方法:建立马尔可夫卫生经济学决策分析模型,评估比较前列腺素类似物的成本效用。健康状态为稳定及进展期青光眼。原发性开角型青光眼和表皮剥脱性青光眼的转换概率均由发表的医学文献数据计算所得。通过对分散遍及于各国家的45位眼科医生进行调查获得临床医疗模式。各国家的具体单位成本包括药费,就诊费,诊断及治疗费。生命质量权重值指定为视力0.50 ～0.84,时间范围为5a。所有分析均为付款人观点成本效益分析,成本结果每年降低3%。结果:在挪威和瑞典,拉坦前列素较曲伏前列素和比马前列素费用低而效益高,拉坦前列素比其他药物费用低达4%。在丹麦,所有三种药物的费用在彼此的1.5%之内,比马前列素与曲伏前列素费用相当,而较拉坦前列素费用略低,但是拉坦前列素较曲伏前列素和比马前列素效益高。各国家所有药物的效用在一个窄范围内。结论:在斯堪的纳维亚,拉坦前列素为其他可买到的前列腺素类似物提供了经济有效的替代物。

关键词：成本拉坦前列素曲伏前列素比马前列素马尔可夫模型

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