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Are there sex-based disparities in cataract surgery?

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 137-143页

作者： Matthew D.Geiger Anne M.Lynch Alan G.Palestine Nathan C.Grove Karen L.Christopher richard s.Davidson Michael J.Taravella Naresh Mandava Jennifer L.Patnaik Department of Ophthalmology University of Colorado School of MedicineAuroraCO 80045USA

AIM:To investigate sex-based differences in the occurrence of intra-operative and post-operative complications and associated visual outcomes following cataract ***:This was a retrospective study of patients who had phacoemulsification cataract surgery at the University of Colorado school of *** collected included the patient’s health history,ocular comorbidities,operative and post-operative complications,and the post-operative best corrected visual acuity(BCVA).The data were analyzed using univariate and multivariable logistic regression with generalized estimating equations to account for the correlation of some patients having two eyes included in the ***:A total of 11977 eyes from 7253 patients were included in the *** comorbidities differed by sex,with males having significantly higher percentages of traumatic cataracts(males 0.7%vs females 0.1%),prior ocular surgery(6.7%vs 5.5%),and mature cataracts(2.8%vs 1.9%).Conversely,females had significantly higher rates of pseudoexfoliation(2.0%vs 3.2%).In unadjusted analysis,males had higher rates of posterior capsular rupture(0.8%vs 0.4%)and vitreous loss(1.0%vs 0.6%),but this difference was not significant after adjustment for *** had a significantly increased risk of post-operative retinal detachment,but in multivariable analysis this was no longer *** were significantly less likely to undergo post-operative neodymium-doped yttrium aluminum garnet(Nd:YAG)laser capsulotomy for posterior capsule opacification(OR=0.8,95%CI=0.7-0.9,P=0.0005).The BCVA was slightly worse for males pre-operatively;but post-operatively,both sexes exhibited similar visual acuity of snellen equivalent 20/***:The study finds that in a cohort of patients presenting for cataract surgery,sex differences exist in pre-operative comorbidities and surgical characteristics that contribute to higher rates of some complications for ***,observed surgical complicatio

关键词： cataract surgery sex-based disparity phacoemulsification outcomes

statistical quality control 7th ed.

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Effect of solid particle loading on nucleophilic addition of epoxy-resin to isophorone diisocyanate

丛书名：国外大学优秀教材

2002年

作者： [美]Eugene L. Grant [美]richard s. Leavenworth

本书是工业工程专业统计质量控制的经典教材，已经出到第7版。与前几版的做法一样，对上一版的改进一是体现在基本原理的表述上，二是使各种主题更接近时代。　　本书简要概述了质量控制的意义和历史发展过程，重点讲解了各种类型的控... 详细信息

ISBN: (纸本)9787900641984

本书是工业工程专业统计质量控制的经典教材，已经出到第7版。与前几版的做法一样，对上一版的改进一是体现在基本原理的表述上，二是使各种主题更接近时代。　　本书简要概述了质量控制的意义和历史发展过程，重点讲解了各种类型的控制图和抽样检验体系和过程，而对概率和统计知识的介绍非常直观和简单。作者认为这种方式对工程和商业领域的学生非常重要，这是因为虽然他们的工业经验不多，但是他们将来可能要对操作员和检验员进行统计质量控制的课程培训。　　本书的第4部分颇具特色，主要涉及质量决策的经济因素、质量管理和问题解决的模式等内容。　　随着经济的发展和学科的交叉，工业工程所涉猎的主题已不仅仅局限于制造业。本书作者之一尤金·L·格兰特（Eugege·L·Grant）曾是美国斯坦福大学的工程经济学教授，作为该领域的权威，他的视野较之一般专攻制造领域的教授更为宽广，所以该书作为工业工程专业统计质量控制的教材非常合适。

关键词： Quality control

来源：畅想之星图书光盘版（南... 评论

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Particuology 2008年第1期6卷 24-29页

作者： Wei Zhang richard s. Blackburn Abbas A. Dehghani-sanij Green Chemistry Group Centre for Technical Textiles University of Leeds Leeds LS2 9JT UK school of Mechanical Engineering University of Leeds Leeds LS2 9JT UK

In the preparation of surface coatings made of conductive composites consisting of conductive particulate fillers in a soft matrix, cracks will develop with increase of the particulate loading, which is believed to be related to the nucleophilic addition reaction between glycidyl end-capped poly （bisphenol A-co-epichlorohydrin） and isophorone diisocyanate molecules. This curing reaction is responsible for the generation of crosslinking network throughout the coatings. The influence of solid particle loading on the chemical reaction may be described as a volume-excluded effect, that is, the high solid particle loading will occupy the space between the functional groups thus preventing the chemical reaction to take place. As a direct consequence, the cross-linking network cannot develop properly due to the insufficiency of curing reaction. This will lead to the generation of cracks, as was supported by FT-IR analysis in this work.

关键词： Particle loading Cracks Nucleophilic Addition FT-IR

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searching for common ground in a global disease

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Hepatobiliary surgery and Nutrition 2018年第4期7卷 297-299页

作者： richard s. Finn Department of Medicine Division of Hematology/Oncology Geffen School of Medicine at UCLA Los Angeles CA USA

There are few malignancies that present clinicians with as many challenges as the patient with hepatocellular carcinoma (HCC).The common occurrence of chronic liver disease with a cancer arising in the liver creates c... 详细信息

关键词： liver hepatocellular cancer

IR study on hydrogen bonding in epoxy resin–silica nanocomposites

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Progress in Natural science:Materials International 2008年第7期18卷 801-805页

作者： Abbas A. Dehghani-sanij richard s. Blackburn school of Mechanical Engineering University of LeedsLeeds LS2 9JT UK Green Chemistry Group Centre for Technical Textiles University of LeedsLeeds LS2 9JT UK

The chemical and physical interactions between ingredients in composites play an important role in the improvement of service prop- erties. The nucleophilic addition between polymer and isophoron diisocyanate molecules was monitored by FT-IR technique. The inten- sity loss of isocyanate absorption band in conjunction with the intensity growth of carboxyl absorption band indicates the progress of reaction. FT-IR spectroscopy was also adopted to examine the intermolecular hydrogen bonding of epoxy resin with silica as well as intramolecular one within polymer matrix. The vibration frequency of carboxyl group (-C=O) and hydroxyl group (-OH) shifts from 1736 to 1728 cm-1and 3420 to 3414 cm-1, respectively, indicating the occurrence of hydrogen bonding between -C=O and -OH. The vibration frequency of si-OH moves from 3435 to 3414 cm-1, suggesting the involvement of silica. Whereas the vibration frequency of pending -OH in polymer chain moves from 3435 to 3420 cm-1 or 3414 cm-1, proposing that this kind of interaction can also happen within polymer matrix.

关键词： Hydrogen bonding FT-IR Epoxy resin silica

Evaluation of ventilation performance and energy efficiency of greenhouse fans

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International Journal of Agricultural and Biological Engineering 2015年第1期8卷 103-110页

作者： Zhang Zhi richard s Gates Zou Zhirong Hu Xiaohui College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100China Department of Agriculture and Biological Engineering University of Illinois at Urbana-Champaign61801USA College of Horticulture Northwest A&F UniversityYangling 712100China

In order to investigate fan performance in fan-ventilated greenhouses(Urbana,UsA),the effects of guard screen and loose belts on fan ventilation airflow and power consumption in greenhouse operations were examined with four belt-driven fans as trial *** Fans Assessment Numeration system was used to measure the airflow ***,relative humidity and power consumption were also *** show there were significant differences in the airflow rate between the fans with a cleaned and uncleaned guard screen(Psumption also differed significantly even with the same cooling effect in *** fan belts were adjusted to the proper tension,the fan speed and airflow rate were 13.1% and 30.1% higher than those of original belts,*** daily average power consumption for the fan with the original loose belts was 20.4% higher than that with the adjusted belts when the pad was not working and 24.2% higher with pad *** ventilation performance of fans with identical specifications showed a variation by up to 13.0% in terms of the ventilating efficiency *** results demonstrated that fans should be cleaned routinely,and belt tension should be checked to ensure that fan performance meets *** can reduce the power consumption in greenhouses for environmental ***,reordering fan staging,so that the most efficient fans are used in areas of greatest demand,can also reduce ventilation energy costs.

关键词： greenhouse fan performance airflow rate power consumption efficiency ratio

Long-term economic sensitivity analysis of light duty underground mining vehicles by power source

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International Journal of Mining science and Technology 2017年第3期27卷 567-571页

作者： schatz richard s. Nieto Antonio Lvov serguei N. The EMs Energy Institute College of Earth and Mineral Engineering The Pennsylvania State University State College PA 16802 USA Department of Energy and Mineral Engineering College of Earth and Mineral Engineering The Pennsylvania State University State College PA 16802 USA Department of Materials science and Engineering College of Earth and Mineral Engineering The Pennsylvania State University State College PA 16802 USA

LHD's are expensive vehicles; therefore, it is important to accurately define the financial consequences associated with the investment of purchasing the mining equipment. This study concentrates on longterm incremental and sensitivity analysis to determine whether it is feasible to incorporate current battery technology into these machines. When revenue was taken into account, decreasing the amount of haulage in battery operated equipment by 5% or 200 kg per h amounts to a $4.0 × 10~4 loss of profit per year. On average it was found that using battery operated equipment generated $9.5 × 10~4 more in income annually, reducing the payback period from seven to two years to pay back the additional $1.0 × 10~5 investment of buying battery powered equipment over cheaper diesel equipment. Due to the estimated 5% increase in capital, it was observed that electric vehicles must possess a lifetime that is a minimum of one year longer than that of diesel equipment.

关键词： sensitivity analysis Underground mining vehicles Battery power Battery mining equipment Economic evaluation

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