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Clinical outcomes of cemented distal femur replacements with allpolyethylene tibial components for oncologic indications

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World Journal of Orthopedics 2023年第4期14卷 218-230页

作者： Alexander B Christ Brian C Chung matthew Urness Lucas W mayer Brandon S Gettleman Nathanael DHeckmann lawrence R menendez Department of Orthopedic Surgery Keck School of Medicine of University of Southern CaliforniaLos AngelesCA 90033United States University of South Carolina School of medicine ColumbiaSC 29209United States

BACKGROUND Endoprosthetic distal femoral replacement(DFR)is a well-established salvage procedure following resection of malignant tumors within the distal *** of an all-polyethylene tibial(APT)component is cost-effective and avoids failure due to locking-mechanism issues and backside wear,but limits modularity and the option for late liner *** to a paucity of literature we sought to answer three questions:(1)What are the most common modes of implant failure for patients undergoing cemented DFR with APT for oncologic indications?(2)What is the survivorship,rate of all-cause reoperation,and rate of revision for aseptic loosening of these implants?And(3)Is there a difference in implant survivorship or patient demographics between cemented DFRs with APT performed as a primary reconstruction vs those performed as a revision procedure?AIm To assess outcomes of cemented DFRs with APT components used for oncologic *** After Institutional Review Board approval,a retrospective review of consecutive patients who underwent DFR between December 2000 to September 2020 was performed using a single-institutional *** criteria consisted of all patients who underwent DFR with a GmRS®(Global modular Replacement System,Stryker,Kalamazoo,mI,United States)cemented distal femoral endoprosthesis and APT component for an oncologic *** undergoing DFR for non-oncologic indications and patients with metal-backed tibial components were *** failure was recorded using Henderson's classification and survivorship was reported using a competing risks *** 55 DFRs(55 patients)with an average age of 50.9±20.7 years and average body mass index of 29.7±8.3 kg/m2 were followed for 38.8±54.9 mo(range 0.2-208.4).Of these,60.0%were female and 52.7%were *** majority of DFRs with APT in this cohort were indicated for oncologic diagnoses of osteogenic sarcoma(n=22,40.0%),giant cell tumor(n=9,16.4%),and metastatic carcin

关键词： Distal femoral replacement modular Revision Dislocation Oncologic

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煤层边界薄层介质干扰反射的模拟研究

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石油物探译丛 1993年第4期 10-17页

作者： lawrence m.Gochioco 杨小黎

美国主要含煤盆地的高分辨率地震记录揭示了与干扰反射有关的潜在复杂问题。由于地质边界条件的差异,这些问题与油气勘探中所遇到的问题有所不同。该模拟研究对一次反射的叠加效应和单个子波叠合和复合反射效应均作了研究。为了提供合... 详细信息

美国主要含煤盆地的高分辨率地震记录揭示了与干扰反射有关的潜在复杂问题。由于地质边界条件的差异,这些问题与油气勘探中所遇到的问题有所不同。该模拟研究对一次反射的叠加效应和单个子波叠合和复合反射效应均作了研究。为了提供合适的地球物理模拟参数,运用经过修改的 Lindseth 关于声波阻抗和速度之间线性关系的经验公式,根据密度测井资料提取了速度信息。根据密度和合成声波测井资料生成的合成地震记录与所处理的地震资料完全吻合。用150赫雷克子波与计算模型相褶积,其结果表明,特定的异常复合反射是由一次反射的叠合结果所引起的。由于后继一次反射旅行时的延迟,以及相长或相消干扰的影响,所研究层位的初始反射的特征会被明显地改变。若识别不当,就会导致错误解释。地层模拟技术进一步提高了地震资料解释处理的精度,并显示其与地震资料之间有着密切的关系。这就意味着,有必要运用更精确的分析方法对复杂的高分辨率地震资料进行解释。

关键词：煤层薄层干扰高分辨率地震记录

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追寻新能源之路

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资源与人居环境 2012年第1期 46-48页

作者： lawrence m.Fisher 哲伦不详

城市的复兴我抵达底特律及其市郊,试图在这片美国工业曾经辉煌的地方,寻求到一丝对未来的希望。经济恶化、社会动荡、城市萧条在这座汽车之城已经屡见不鲜,问题是,它有可能成为整个美国的缩影吗?或者,在那里亦酝酿着希望,新工业的契机... 详细信息

城市的复兴我抵达底特律及其市郊,试图在这片美国工业曾经辉煌的地方,寻求到一丝对未来的希望。经济恶化、社会动荡、城市萧条在这座汽车之城已经屡见不鲜,问题是,它有可能成为整个美国的缩影吗?或者,在那里亦酝酿着希望,新工业的契机正振翅欲飞他们其中的一些正坐落在底特律大都市的核

关键词：氢燃料电池汽车底特律美国通用汽车公司电动车电力动车

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Goodness-of-Fit Test for Volume Equations of Three Timber Species in South East Cameroon

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Journal of Environmental Science and Engineering(B) 2012年第5期1卷 600-605页

作者： Eric Ngbanye Ntabe John Adebayo Akande lawrence Adetunji Kehinde Department of Forestry Faculty of Agronomy & Agricultural Sciences University of Dschang Dschang 222 Cameroon Department of Crop Production Soil & Environmental Management BOWEN University lwo Osun Osun State Nigeria Department of Agricultural Economics Osun State University Osogbo Osun Osun State Nigeria

A study on the validity of volume equations currently used for three timber species, Entandrophragma cylindricum, Erythrophleum ivorensis and Pericopsis elata （Sapelli, Tali and Assamela respectively） in south east Cameroon, was conducted between the months of July and September, 2007 to evaluate their suitability for the site. Twenty-two percent sampling intensity was conducted within annual allowable cuts and diameter readings taken on standing trees with the aid of a wide band Relascope. A non linear regression equation model was employed to compute volume equations and the student＇s t-test for the analysis of the existing models. Based on individual tree volumes within stands, new equations for the three species were constructed. A comparison was made between the new equations and those that were being used at the site. Results indicated a total standing volume of 0.007 m3/ha obtained for the three species （Sapelli 0.003 m3/ha, Tali 0.002 m3/ha and Assamela 0.002 m3/ha）. Two new volume equation models [B] and [C] were retained for their goodness-of-fit with [B] for Assamela and [C] for Sapelli and Tali. Results also showed that a total volume of 0.005 m3/ha was underestimated for the three species （Sapelli 0.002 m3/ha, Tali 0.001 m3/ha and Assamela 0.002 m3/ha） when existing volume equations were applied. It is imperative to construct new volume equations that are compatible with the ecological characteristics of the site using representative samples. Setting-up appropriate methods for their validation shall also serve as checks to future management errors.

关键词： Volume equations misapplication timber species Cameroon.

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Study on Performance and Emission Characteristics of a Compression Ignition Engine Fueled with Diesel-2 Ethoxy Ethyl Acetate Blends

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Engineering（科研） 2011年第11期3卷 1132-1136页

作者： B. Deepanraj P. lawrence m. Kannan V. Nadanakumar S. Santhanakrishnan R. Senthil 不详

Diesel engines are the major contributors of various types of air polluting gases like carbon monoxide, oxides of nitrogen, smoke, etc. Improvement of fuel properties is essential for suppression of Diesel pollutant emissions along with the optimization of design factors and after treatment equipment. Studies conducted in the past have shown that a significant reduction were obtained in the emissions using oxygenates. This paper investigates the performance and emission characteristics of a direct injection Diesel engine fueled with 2 Ethoxy Ethyl Acetate (EEA) blends. Different fuel blends which contain 5%, 10% and 15% of EEA were prepared and the effect of these blends on performance and emissions were studied on a single cylinder direct injection Diesel engine. The blends were tested under different load conditions and the result showed that EEA blended fuels improves the performance of the engine and reduce the emission level significantly.

关键词： 2 Ethoxy Ethyl Acetate Diesel Performance Emission Compression Ignition Engine

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Efficacy of Bacillus subtilis mBI 600 Against Sheath Blight Caused by Rhizoctonia solani and on Growth and Yield of Rice

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Rice science 2012年第1期19卷 55-63页

作者： K. VIJAY KRISHNA KUmAR S. KR. YELLAREDDYGARI m. S. REDDY J. W. KLOEPPER K. S. lawrence X. G. ZHOU H. SUDINI D. E. GROTH S. KRISHNAm RAJU m. E. mILLER Department of Entomology ＆ Plant Pathology Auburn University Auburn Alabama 36849 USA ＆ Acharya N G Ranga Agricultural University Hyderabad 500030 India Department of Entomology ＆ Plant Pathology Auburn University Auburn Alabama 36849 USA Texas A ＆ m University Agri-Life Research ＆ Extension Center Texas 77713 USA International Crops Research Institute fo)r the Semi-Arid Tropics (ICRISAT) Hyderabad 502324 India Rice Research Station LSU AgCenter LA 70578 USA Andhra Pradesh Rice Research Institute Maruteru AP 534122 India Department of Biological Sciences Auburn University Auburn Alabama 36849 USA

Rice sheath blight disease （ShB）, caused by Rhizoctonia solani, gives rise to significant grain yield losses. The present study evaluated the efficacy of Integral, the commercial liquid formulation of Bacillus subtilis strain mBI 600, against rice ShB and for plant growth promotion. In greenhouse studies, four log concentrations of Integral （from 2.2×10^6 to 2.2×10^9 cfu/mL） were used as seed treatment （ST）. After 25 d, seedlings were dipped （SD） into Integral prior to transplanting. At 30 d after transplanting （DAT）, leaf sheaths were inoculated with immature sclerotia of the pathogen. At 45 DAT, a foliar spray （FS） with Integral was applied to some treatments. The fungicide control was 50% carbendazim at 1.0 g/L, and a nontreated control was also included. Overall, there were 10 treatments, each with five replications. ShB severity was rated at 52 DAT, and seedling height and number of tillers per plant were rated at 60 DAT. In 2009, two field trials evaluated Integral at 2.2×10^8 and 2.2×10^9 cfu/mL. Integral was applied as ST, and seedlings were produced in a nursery bed. After 32 d, seedlings were treated with Integral as SD and transplanted into 10 m^2 blocks. Foliar sprays were given at 45 and 60 DAT. There were seven treatments, each with eight replications arranged as a factorial randomized complete block design. At 20 DAT, the plots were broadcast inoculated with R. solani produced on rice grains. Seedling height before transplanting, ShB severity at 90 DAT, and grain yield at harvest were recorded. Integral at 2.2×10^9 cfu/mL provided significant increase of seedling heights over other treatments under greenhouse conditions. The Integral treatments of ST ＋ SD ＋ FS at 2.2×10^9 cfu/mL significantly suppressed ShB over other treatments. In field studies, Integral provided significant increase of seedling height in nursery, and number of tillers per plant, compared with the control. ShB severity was significantly suppressed with higher concentrations of Integ

关键词： rice sheath blight Rhizoctonia solani plant growth-promoting rhizobacterium Bacillus subtilis

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Radiology education in Europe: Analysis of results from 22 European countries

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World Journal of Radiology 2017年第2期9卷 55-62页

作者： Bhavya Rehani Yi C Zhang madan m Rehani András Palkó lawrence Lau miriam N mikhail Lette William P Dillon Department of Radiology and Biomedical Imaging University of California Department of Radiology Massachusetts General Hospital Harvard Medical School Department of Radiology University of Szeged Consultant Diagnostic Radiologist RAD-AID International

AImTo assess the state of radiology education across Europe by means of a survey *** comprehensive 23-item radiology survey was distributed via email to the International Society of Radiology members, national radiological societies, radiologists and medical physicists. Reminders to complete the survey were sent and the results were analyzed over a period of 4 mo (January-April 2016). Survey questions include length of medical school and residency training; availability of fellowship and subspecialty training; number of residency programs in each country; accreditation pathways; research training; and medical physics education. Descriptive statistics were used to analyze and summarize *** residency training ranges from 2-6 years with a median of 5 years, and follows 1 year of internship training in 55% (12 out of 22) European countries. Subspecialty fellowship training is offered in 55% (12 out of 22) European countries. Availability for specialization training by national societies is limited to eight countries. For nearly all respondents, less than fifty percent of radiologists travel abroad for specialization. Nine of 22 (41%) European countries have research requirements during residency. The types of certifying exam show variation where 64% (14 out of 22) European countries require both written and oral boards, 23% (5 out of 22) require oral examinations only, and 5% (1 out of 22) require written examinations only. A degree in medical physics is offered in 59% (13 out of 22) European countries and is predominantly taught by medical physicists. Nearly all respondents report that formal examinations in medical physics are *** learning experiences across the continent will help guide the development of comprehensive yet pragmatic infrastructures for radiology education and collaborations in radiology education worldwide.

关键词： Radiology education European radiology survey Radiology training Residency Radiology research

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Bacterial Colonization of the Equine Gut;Comparison of mare and Foal Pairs by PCR-DGGE

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Advances in microbiology 2012年第2期2卷 79-86页

作者： Jennifer E. Earing Andrew C. Durig Gloria L. Gellin Laurie m. lawrence michael D. Flythe Agricultural Research Service Forage-Animal Production Research Unit USDA Lexington USA Department of Animal and Food Sciences University of Kentucky Lexington USA Department of Animal and Food Sciences University of Kentucky Lexington USA Agricultural Research Service Forage-Animal Production Research Unit USDA Lexington USA

Horses, like all animals, are born without the symbiotic microbes that occupy the gastrointestinal tracts of mature animals. As grazing animals, horses rely on these microbes to fully utilize the grasses and other cellulosic feeds that they consume. Thus, colonization of the foal's gastrointestinal tract must occur between birth and weaning. The feces of nine mare and foal pairs were sampled from the day of parturition until 12 weeks of age, and the samples were analyzed by polymerase chain reaction amplification of the bacterial 16S rRNA gene and denaturing gradient gel electrophoresis (PCR-DGGE). The gels from feces of day (d) 0 foals had no or very few ( x = 3, n = 6) bands, which indicates that species richness was low. The number of bands increased during the first 4 days of life, and by d 14 the foals and mares had similar numbers of bands ( x = 28, n = 23). Some bands were present in young foals, but not in mares or in foals on d 42 or d 84, which indicated succession of bacterial species. When the PCR-DGGE profiles were compared with Dice's algorithm, all mare-foal pairwise similarities on d 14 and later were as great as the pairwise similarities between mares. These results are consistent with the idea that foals are born with a sterile gut, colonization proceeds rapidly, and a mature microbial community is present in the first few weeks of life.

关键词： Colonization Development microbial Ecology Neonates

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桥牌动态防守

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1988年

作者：劳伦斯(lawrence m.)

来源：南通市图书馆图书汇雅图书（南通市图书馆... 评论

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Intra-operative consult for cystic struma ovarii—An experience in an academic medical center: A study of 53 cases over 21 years

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Open Journal of Obstetrics and Gynecology 2013年第7期3卷 1-6页

作者： m. Ruhul Quddus Jinjun Xiong S. m. K. Nahar Begum michele Lomme Katrine Hansen C. James Sung W. Dwayne lawrence Department of Pathology Women & Infants’ Hospital and the Warren Alpert Medical School of Brown University Providence USA

Struma ovarii often escapes recognition during intraoperative consultation because of its rarity, subtle characteristic gross appearance, and lack of clinical suspicion. An intraoperative diagnosis of benign struma ovarii enables the general gynecologic surgeon to continue the planned surgery. However, a diagnosis of malignnancy in a struma ovarii would alter the course of surgery with the involvement of a gynecologic oncology surgeon. We present here that our experience with intraoperative consultation for preoperatively undiagnosed struma ovarii presenting as an adnexal cystic or solid mass at our teaching hospital. Fifty-three cases of struma ovarii, 5.2% of all cystic teratoma of the same period, were diagnosed between January 1991 and march 2011. All intraoperative consultation reports, gross descriptions and final pathology reports were reviewed. The H&E stained slides and in selected cases, immunohistochemistry stained slides, were reviewed. Of the 53 cases of struma ovarii, intraoperative consultation was requested on 48 cases. Frozen section was done on 24 cases and only gross examination was felt appropriate in remaining 24 cases. 83% cases were diagnosed when a frozen section was done. None of the remaining 24 cases were recognized as struma by gross inspection. Our findings reveal that in a large number of cases the diagnosis of struma ovarii remained unrecognized during intraoperative consultation, indicating its often subtle/deceptive gross morphologic appearance. However, the purpose of the intraoperative consultation was served, as appropriate information was provided to the surgeon to guide the surgical management.

关键词： Struma Ovarii Intraoperative Consult Ovarian Cyst

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