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三种蔬菜氮肥效应曲线的比较研究

植物营养与肥料学报 1995年第1期1卷 71-78页

作者：杨靖一 G.A.wadsworth d.J.Greenwood 吉林农业大学土化系 130118 英国里丁大学土壤系英国国际园艺研究所土壤系

本文选取英国AdAS 1987—1989年的三种蔬菜(花茎甘蓝、大白菜、韭葱)氮肥试验为材料,分别选取总产量、干物重和市场产量为因变量,以施N量为自变量,对具有代表性的三种肥料效应函数:二次型Y=b_0+b_1X+b_2X^2(M1)、线性加指数Y=a+br^x+cX(... 详细信息

本文选取英国AdAS 1987—1989年的三种蔬菜(花茎甘蓝、大白菜、韭葱)氮肥试验为材料,分别选取总产量、干物重和市场产量为因变量,以施N量为自变量,对具有代表性的三种肥料效应函数:二次型Y=b_0+b_1X+b_2X^2(M1)、线性加指数Y=a+br^x+cX(M2)、倒线性Y=dbX/(8+bX)+cX(M3)进行了系统的比较研究。研究结果指出:用三种模型所配置的60个肥料效应方程均有55个达到了F_(0.1)以上显著水准,其中M2具有最大的平均回归方差贡献率(93%)和最小的平均残差方差(15.9)。进一步t检验指出:用M1所预报的最高平均产量显著高于M2和M3的预报结果。但M2所计算的平均最高施肥量显著低于M1和M3的计算结果。从模型的极值点考虑,M2较适合于模拟花茎计蓝、大白菜的肥料效应曲线;M3较适合于模拟花茎甘蓝、韭葱的肥料效应的曲线;M1的通用性较强。

关键词：蔬菜氮肥效应产量

Body mass index and blood pressure in rural, low socioeconomic children

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Health 2013年第8期5卷 91-95页

作者： Leah E. Robinson Colleen M. daly danielle d. wadsworth School of Kinesiology Auburn University Auburn USA

Background: Young children who are overweight and obese may be at a greater risk of hypertension, and those from rural and low socio-economic areas may also exhibit a prevalence of metabolic dysfunction and cardiovascular risk. This study evaluated the relationship of body mass index (BMI) and blood pressure in children from a rural, low socioeconomic community in Alabama. Methods: This cross-sectional study was comprised of young children (aged 5-9 years). BMI (normal, overweight, obese) was assessed using standardized procedures and classified based on the Centers for disease Control Growth Charts. Blood pressure status (normal, pre-hypertension, hypertension;stage 1 and stage 2) was defined by percentiles of the 2nd and 3rd reading on a single occasion. A MANOVA was used to determine the relationship of BMI to mean blood pressure (i.e., systolic and diastolic). Results: Of the 134 participants (78% non-Hispanic Black), 10 (7.5%) were overweight and 25 (18.7%) were obese. Pre-hypertension and hypertension were detected in 9 (6.7%) and 20 (14.9%) children, respectively. Results indicate that mean systolic and diastolic blood pressure significantly increased with BMI, P P = 0.028. Conclusion: Hypertension was strongly associated with an unhealthy BMI in these young children from a rural and low-socio-economic community. The findings raise concerns about the growing epidemic of childhood obesity and hypertension in young children and warrant the need to investigate lifestyle behavioral interventions on BMI and blood pressure.

关键词： Hypertension Rural Health Pediatrics Obesity Overweight

THE CHANGING ROLE OF THE NATIONAL LABORATORIES IN MATERIALS RESEARCH

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Acta Metallurgica Sinica(English Letters) 1995年第Z1期8卷 245-259页

作者： wadsworth Jeffrey and FLUSS Michael(Chemistry and Materials Science directorate,Lawrence Livermore National Laboratory, Livermore, CA 94551)

The role of the National Laboratories is summarized from the era of post World War II to the present time. The U.S. federal government policy for the National Laboratories and its influence on their materials science infrastructure is reviewed with respect to .determining overall research strategies, various initiatives to interact with industry (especially in recent years),building facilities that serve the nation, and developing leading edge research in the materials sciences. despite reductions in support for research in the U.S. in recent years, and uncertainties regarding the specific policies for Research &development (R&d) in the U.S., there are strong roles for materials research at the National Laboratories. These roles will be centered on the abilities of the National Laboratories to field multidisciplinary teams, the use of unique cutting edge facilities, a focus on areas of strength within each of the labs,increased teaming and partnerships, and the selection of motivated research areas. It is hoped that such teaming opportunities will include new alliances with China, in a manner similar, perhaps, to those recently achieved between the U.S. and other countries.

关键词： U.S. Materials Science. U.S. National Laboratories and Facilities International Partnerships

Vitamin d Assays——Issues Concern Clinicians and Laboratorians

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Vitamin D Assays——Issues Concern Clinicians and Laboratori...

中华医学会第八次全国检验医学学术会议暨中华医学会检验分会成立30周年庆典大会

作者： wadsworth Center,New York State department of Health (Tim) Zhimin Cao,Md.,Phd.

Vitamin d,rather a steroid prehormone,is synthesized in the skin upon exposure to sunlight or UV *** d is metabolized in the liver to form 25-hydroxy vitamin d(25[OH]d),and further hydroxylated in the kidney to form the biologieal active form of 1,25- dihydroxy vitamin *** d is known for its role in regulation of calcium *** vitamin d deficieney causes rickets in children and osteomalacia in *** new evidences also

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标准物和标准方法与临检质控(英文)

标准物和标准方法与临检质控(英文)

第三届全国临床检验实验室管理学术会议

作者： Zhimin Cao, Md, Ph.d.wadsworth Center New York State department of Health

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轻稀土区Nd和Ce核的超形变带

高能物理与核物理 1989年第7期13卷 632-641页

作者：罗亦孝钟纪泉 A.Kirwan d.J.G.Love P.J.Nolan R.wadsworth P.J.Bishop M.J.Godfrey R.Hughes A.N.James I.Jenkins S.M.Mullins J.Simpson d.J.Thornley K.L.Ying 中国科学院近代物理研究所 Oliver Lodge Lab. University of Liverpool PO Box 147 Liverpool L69 3BX U. K. SERC daresbury Lab. Warrington W A4 4Ad U. K. department of Physics University of York Heslington York Y01 5DD U. K.

轻稀土区高自旋超形变的系统实验研究,首次发现了~133,134,137)Nd和^(131)Ce的超形变带,并证实和进一步研究了前已发现的^(135,136)Nd和^(132)Ce超形变带.本文叙述超形变带的实验寻找、指定和测量,并对所发现的超形变带的馈入、退激、... 详细信息

轻稀土区高自旋超形变的系统实验研究,首次发现了~133,134,137)Nd和^(131)Ce的超形变带,并证实和进一步研究了前已发现的^(135,136)Nd和^(132)Ce超形变带.本文叙述超形变带的实验寻找、指定和测量,并对所发现的超形变带的馈入、退激、转动惯量、相对强度和结构的系统性进行了讨论.

关键词：轻稀土区原子核超形变带钕铈

Syntheses of New Functionalized Monomers for π-Conjugated Polymers

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复旦学报（自然科学版） 2007年第5期46卷 811-页

作者： d.VYPRACHTICKY V.CIMRO P.PAVLKOVA I.KMNEK Institute of Macromolecular Chemistry Academy of Sciences of the Czech RepublicHeyrovsky Sq. 2162 06 Prague 6 Czech Republic

1 Results Tailored monomers based on the activated esters of 2,5-dibromobenzoic (sulfonic) acid derivatives, the 3-substituted 2,5-dibromothiophenes, the 9-substituted 2,7-dibromocarbazoles, and on the brominated 1,10-phenanthrolines suitable for Suzuki, Yamamoto or Grignard metathesis (GRIM) coupling reactions were synthesized and characterized by melting point, elemental analysis, 1H NMR, FTIR and TLC. The Horner-wadsworth-Emmons reaction mechanism was utilized for the preparation of the 3-[2-(pyren-1...

关键词： substituted thiophene activated ester pyrene derivative quinoline, β-diketone carbazole and 1,10-phenanthroline derivatives

destructive and Nondestructive determination of <sup>226</sup>Ra and <sup>228</sup>Ra in drinking Water by Gamma Spectrometry

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Journal of Environmental Protection 2020年第4期11卷 257-268页

作者： A. J. Khan A. Bari M. A. Torres d. K. Haines T. J. Hoffman T. M. Semkow wadsworth Center New York State Department of Health Albany NY USA department of Environmental Health Sciences School of Public Health University at Albany State University of New York Rensselaer NY USA

The Safe drinking Water Act (SdWA) mandates that the drinking water should be monitored for 226Ra and 228Ra isotopes and establishes the Maximum Contaminant Level of 185 mBq/L (5 pCi·L-1) for the sum. In addition, SdWA regulates the detection Limit (dL) of 37.0 mBq/L (1 pCi/L) for each isotope. The purpose of this work is to develop a working method for the determination of radium isotopes in drinking water satisfying the regulatory requirements of U.S. Environmental Protection Agency by utilizing our extensive experience in low-background gamma spectrometry at this laboratory. Two versions of the method were studied: destructive and non-destructive. destructive method used the BaSO4 coprecipitation as well as 133Ba tracer for chemical recovery. We have used three gamma spectrometers: low-background 102% and 134% efficient with top muon guards, as well as an ultralow-background 140% efficient with full muon guard. We obtained a range of dLs from 5.3 to 22.6 mBq/L for 226Ra and from 7.4 to 30.4 mBq/L for 228Ra using the destructive method. For non-destructive method, the dL range was 26.0 to 26.9 mBq/L for 226Ra and 27.6 to 28.6 mBq/L for 228Ra using the 140% detector. To verify the methods, 7 to 10 laboratory control samples were spiked with both 226Ra and 228Ra at two different activities of 37.0 and 185 mBq/L. The results were evaluated by performing a combined location/variance chi-square test at a right-tail significance of 0.01 (99% Confidence Level), as stipulated by EPA. The verification results passed the chi-square tests at both activity levels. The destructive method can be accomplished using low-background gamma spectrometry, whereas non-destructive method requires ultralow-background gamma spectrometry.

关键词： Radioactive Pollution Germanium detector detection Limit Chi-Square Test

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小儿视神经鞘减压术

世界核心医学期刊文摘（眼科学分册） 2005年第11期1卷 58-58页

作者： Thuente d.d. Buckley E.G. 宋虎平 duke University Eye Center Box3802 DUHSWadsworth Building Erwin Road Durham NC 27710 United StatesDr.

Purpose: To review our experience with optic nerve sheath decompression for pe diatric pseudotumor cerebri. design: Retrospective chart review. Participants: S eventeen eyes in 12 children younger than 16 years of age. All patients were eit her unresponsive or intolerant to medication. Intervention, Methods, or Testing: An optic nerve sheath fenestration was performed. Main Outcome Measures: Optic nerve appearance, visual acuity, color vision, and visual fields. Results: The a verage age at surgery was 10.1 years of age. The average follow-up was 39.6 mon ths. Headache was the most common presenting symptom. All patients showed improv ement in optic nerve edema. Visual acuity improved or stayed the same in all sur gical eyes (P=0.0078). One patient required a neurosurgical lumbar peritoneal sh unt, and 2 patients required acetazolamide on the last follow-up appointment. N o patient had postoperative infection, loss of vision, or strabismus develop. Fi ve of the patients in this study required sheath decompression on the other eye. Conclusions: Optic nerve sheath decompression in children is safe, and the resu lts are similar to those obtained in adults. Close follow-up is required, becau se 5 of 12 patients in this study required a contralateral optic nerve sheath de compression.

关键词：视神经鞘减压术脑假瘤对侧眼腹腔分流术就诊症状乙酰唑胺神经外科药物治疗开窗神经鞘