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Celebrating 20 Years of Progress RSPO to release revised global standards for sustainable palm oil
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作者 Huang Jiangqin 《China Report ASEAN》 2024年第1期40-41,共2页
The Roundtable on Sustainable Palm Oil(RSPO)held its annual conference(RT2023)in Jakarta,Indonesia,from November 20 to 22,2023.Themed“Partners for the Next 20,”the meeting highlighted what RSPO’s members and partne... The Roundtable on Sustainable Palm Oil(RSPO)held its annual conference(RT2023)in Jakarta,Indonesia,from November 20 to 22,2023.Themed“Partners for the Next 20,”the meeting highlighted what RSPO’s members and partners have achieved over the last two decades.Nearly a thousand delegates from the global sustainable palm oil industry held discussions on the core challenges facing the industry including mitigating climate change,increasing uptake of certified sustainable palm oil(CSPO),protecting labor rights,and facilitating greater smallholder inclusion in green supply chains through compliance with emerging international regulations. 展开更多
关键词 revised SUSTAINABLE discussions
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Analysis of the causes of primary revision after unicompartmental knee arthroplasty: A case series 被引量:2
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作者 Jin-Long Zhao Xiao Jin +5 位作者 He-Tao Huang Wei-Yi Yang Jia-Hui Li Ming-Hui Luo Jun Liu Jian-Ke Pan 《World Journal of Clinical Cases》 SCIE 2024年第9期1560-1568,共9页
BACKGROUND Unicompartmental knee arthroplasty(UKA)has great advantages in the treatment of unicompartmental knee osteoarthritis,but its revision rate is higher than that of total knee arthroplasty.AIM To summarize and... BACKGROUND Unicompartmental knee arthroplasty(UKA)has great advantages in the treatment of unicompartmental knee osteoarthritis,but its revision rate is higher than that of total knee arthroplasty.AIM To summarize and analyse the causes of revision after UKA.METHODS This is a retrospective case series study in which the reasons for the first revision after UKA are summarized.We analysed the clinical symptoms,medical histories,laboratory test results,imaging examination results and treatment processes of the patients who underwent revision and summarized the reasons for primary revision after UKA.RESULTS A total of 13 patients,including 3 males and 10 females,underwent revision surgery after UKA.The average age of the included patients was 67.62 years.The prosthesis was used for 3 d to 72 months.The main reasons for revision after UKA were improper suturing of the surgical opening(1 patient),osteophytes(2 patients),intra-articular loose bodies(2 patients),tibial prosthesis loosening(2 patients),rheumatoid arthritis(1 patient),gasket dislocation(3 patients),anterior cruciate ligament injury(1 patient),and medial collateral ligament injury with residual bone cement(1 patient).CONCLUSION The causes of primary revision after UKA were gasket dislocation,osteophytes,intra-articular loose bodies and tibial prosthesis loosening.Avoidance of these factors may greatly reduce the rate of revision after UKA,improve patient satisfaction and reduce medical burden. 展开更多
关键词 Unicompartmental knee arthroplasty Total knee arthroplasty CAUSES revisION Case series
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THE LOW MACH NUMBER LIMIT FOR ISENTROPIC COMPRESSIBLE NAVIER-STOKES EQUATIONS WITH A REVISED MAXWELL'S LAW
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作者 胡玉玺 王召 《Acta Mathematica Scientia》 SCIE CSCD 2023年第3期1239-1250,共12页
We investigate the low Mach number limit for the isentropic compressible NavierStokes equations with a revised Maxwell's law(with Galilean invariance) in R^(3). By applying the uniform estimates of the error syste... We investigate the low Mach number limit for the isentropic compressible NavierStokes equations with a revised Maxwell's law(with Galilean invariance) in R^(3). By applying the uniform estimates of the error system, it is proven that the solutions of the isentropic Navier-Stokes equations with a revised Maxwell's law converge to that of the incompressible Navier-Stokes equations as the Mach number tends to zero. Moreover, the convergence rates are also obtained. 展开更多
关键词 isentropic compressible Navier-Stokes equations low Mach number limit revised Maxwell's law
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ISO publishes revised standard for ground support equipment and relevant systems
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《China Standardization》 2023年第2期17-17,共1页
Aerospace is always a pursuit of humans,not only out of desire for knowledge,but also out of persevering ambition.Ground support equipment(GSE)and relevant systems are of vital significance,which is fundamental to spa... Aerospace is always a pursuit of humans,not only out of desire for knowledge,but also out of persevering ambition.Ground support equipment(GSE)and relevant systems are of vital significance,which is fundamental to space system programs and projects.Though there are standards for ESG,the standards for ESG inspection and maintenance are necessary to perfect the whole process. 展开更多
关键词 revised PURSUIT PERFECT
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New Data on Coal, Gypsum, Iron and Silica Sand Deposits and Geochemical Exploration (Pakistan): Revision of 25 Years History of Dinosaur Discoveries from Pakistan
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作者 Muhammad Sadiq Malkani 《Open Journal of Geology》 CAS 2024年第3期431-511,共81页
Discoveries of many coal seams at depths by drilling carried by Geological Survey of Pakistan in Sor Range and Harnai Gochina, extended the coal seams at depth which is challenge for mine owners to exploit feasibly. B... Discoveries of many coal seams at depths by drilling carried by Geological Survey of Pakistan in Sor Range and Harnai Gochina, extended the coal seams at depth which is challenge for mine owners to exploit feasibly. Bed to bed gypsum samplings (and their chemical analyses) of huge gypsum deposits from Sulaiman foldbelt is a base for industrialist and also planers to develop cement and gypsum industries to increase export and foreign exchange for the development of area and Pakistan. Low and high grade sedimentary iron deposits, silica sand and uranium host rocks and their extensions in Sulaiman and Kirthar foldbelts are presented. Anomalies of a few base metals arise as a result of geochemical exploration carried at part of Loralai District of Balochistan. Theropod dinosaurs were frequent in India, while Poripuchian titanosaurs (Sauropoda, Dinosauria) were frequent in Pakistan. Besides some ichnotaxa, many bone taxa such as 1 titanosauriform, 14 titanosaurian sauropod (including one new titanosaur), and 3 theropod dinosaurs are established from Pakistan. Among these 12 titanosaur species and 3 theropod species are named in about 10 km<sup>2</sup> area of Vitakri dome and 2 titanosaur species are named in about a few hundred square meter area of Mari Bohri (Kachi Bohri) which is about 10 km westward from Vitakri dome. Pakistan is a unique country which discoverd 14 diversified titanosaurs in a short area and also in a short period (67 - 66 million years ago/Ma). About 400 bones found from a few meter thick upper part of upper shale horizon of latest Maastrichtian Vitakri Formation which is base for titanosaur taxa. Cranial material is in low fraction (but include significant diverse snouts), caudal vertebrae are prominent, the cervicals, dorsals and sacrals have significant numbers, forelimb and hind limb bones have balanced fraction. Humeri, femora and tibiae are most common. To know the position of Pakistani titanosaurs among titanosaurs and sauropods, there is a need to extend list of characters for phylogenetic analyses. This broad feature list should include main characters of titanosaurs from Pakistan and also from global world. 展开更多
关键词 COAL GYPSUM IRONSTONE Silica sands Geochemical Exploration Dinosaurs TITANOSAURIFORMES Titanosaurs Theropods revisION BALOCHISTAN Pakistan
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Gouty destruction of a patellar tendon reconstruction and novel revision reconstruction technique: A case report
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作者 Carl C Edge Jonathan Widmeyer +2 位作者 Omar Protzuk Maya Johnson Robert O’Connell 《World Journal of Orthopedics》 2024年第7期675-682,共8页
BACKGROUND Gout is a disease characterized by hyperuricemia,and resultant deposition of uric acid crystals in tissues.While typically manifested as intraarticular crystals or tophi,gout can also cause pathology at ent... BACKGROUND Gout is a disease characterized by hyperuricemia,and resultant deposition of uric acid crystals in tissues.While typically manifested as intraarticular crystals or tophi,gout can also cause pathology at entheses.Gouty deposition within tendinous structures put them at risk for traumatic and degenerative rupture.Furthermore,allografts can also be at risk of rupture in the setting of severe gout.We present the case of a 56-year-old female with severe gouty disease who sustained a re-rupture of a patellar tendon allograft reconstruction.CASE SUMMARY A 56-year-old female presented to clinic after feeling her left knee pop and collapse beneath her while descending stairs.She had a history of tophaceous gout and left patellar tendon rupture with reconstruction and multiple revisions over the course of 19 years.This patient presented with pain and extensor lag.A magnetic resonance image demonstrated a ruptured patellar tendon allograft reconstruction and avulsion fracture at the tibial tubercle.The patient was treated with a novel intervention of Achilles allograft with bone block in a unique configuration with a dermal allograft incorporated into the reconstruction.She was made non-weight bearing in the operative extremity in extension for the first four weeks postoperatively and was then progressed to active flexion over the course of eight weeks.At twelve weeks,she was able to fully extend her operative knee and at five months she was resuming her normal activities and exercises.CONCLUSION Failed patellar tendon reconstruction due to gouty infiltration is treated with dermal allograft augmented Achilles tendon reconstruction with bone block. 展开更多
关键词 GOUT Patella RECONSTRUCTION Dermal allograft revisION Case report
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Is there sufficient evidence to support the use of antibiotic holiday just before the second stage of an infected total hip or knee arthroplasty revision surgery?
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作者 Konstantinos Tsikopoulos Konstantinos Sidiropoulos 《World Journal of Orthopedics》 2024年第5期483-485,共3页
The practice of implementing an antibiotic holiday before the second stage of hip or knee arthroplasty is currently controversial due to limited evidence for this approach,as per the International Consensus Meeting 20... The practice of implementing an antibiotic holiday before the second stage of hip or knee arthroplasty is currently controversial due to limited evidence for this approach,as per the International Consensus Meeting 2018 on Musculoskeletal Infection.A greater understanding of this issue could augment the quality of Alrayes and Sukeik’s mini-review(2023)on diagnosing,managing,and treating periprosthetic knee infections.However,a significant lack of literature exists concerning the optimal duration for the antibiotic holiday,calling for more research before establishing any clinical guidelines. 展开更多
关键词 Septic knee prosthesis revision Two stages Antibiotic holiday
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United States Healthcare Data Breaches: Insights for NIST SP 800-66 Revision 2 from a Review of the NIST SP 800-66 Revision 1
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作者 Mohammed Mohammed Raoof 《Journal of Information Security》 2024年第2期232-244,共13页
Healthcare security and privacy breaches are occurring in the United States (US), and increased substantially during the pandemic. This paper reviews the National Institute of Standards and Technology (NIST) publicati... Healthcare security and privacy breaches are occurring in the United States (US), and increased substantially during the pandemic. This paper reviews the National Institute of Standards and Technology (NIST) publication base as an effective solution. The NIST Special Publication 800-66 Revision 1 was an essential standard in US healthcare, which was withdrawn in February 2024 and superseded by SP 800-66 Revision 2. This review investigates the academic papers concerning the application of the NIST SP 800-66 Revision 1 standard in the US healthcare literature. A systematic review method was used in this study to determine current knowledge gaps of the SP 800-66 Revision 1. Some limitations were employed in the search to enforce validity. A total of eleven articles were found eligible for the study. Consequently, this study suggests the necessity for additional academic papers pertaining to SP 800-66 Revision 2 in the US healthcare literature. In turn, it will enhance awareness of safeguarding electronic protected health information (ePHI), help to mitigate potential future risks, and eventually reduce breaches. 展开更多
关键词 SP 800-66 revision 1 SP 800-66 revision 2 HIPAA Compliance Security Breaches Risk Management Framework (RMF) Internet of Things (IoT) Artificial Intelligence (AI)
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The Impact of Comment Style on Learners’ Essay Revisions
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作者 CHEN Yang-tao 《Sino-US English Teaching》 2024年第2期73-78,共6页
This paper investigates how the type of written feedback provided by teachers affects learners’ ability to revise essays. A total of 120 participants participated in two rounds of essay composition and feedback deliv... This paper investigates how the type of written feedback provided by teachers affects learners’ ability to revise essays. A total of 120 participants participated in two rounds of essay composition and feedback delivery. The findings indicate that learners who receive comments in the form of questions are more prone to make revisions compared to those receiving statements or imperatives. These results hold significant implications for educators and the ways they utilize written feedback to enhance learners’ writing skills. 展开更多
关键词 teacher’s written feedback impact learners’essay revisions
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基于Revised IMPROVE方法和MIE方法计算北京地区气溶胶消光系数的对比分析 被引量:3
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作者 刘斌 臧增亮 +3 位作者 田平 颜鹏 蔡恒明 张仁健 《装备环境工程》 CAS 2019年第6期123-128,共6页
目的对比分析IMPROVE方程的改进算法(Revised IMPROVE)和MIE方法在北京地区计算消光系数的适用性。方法基于2012年6月3日至6月30日北京地区大气颗粒物成分的浓度观测数据,分别采用Revised IMPROVE和MIE方法计算颗粒物的消光系数,其中MI... 目的对比分析IMPROVE方程的改进算法(Revised IMPROVE)和MIE方法在北京地区计算消光系数的适用性。方法基于2012年6月3日至6月30日北京地区大气颗粒物成分的浓度观测数据,分别采用Revised IMPROVE和MIE方法计算颗粒物的消光系数,其中MIE方法的粒径分布采用总量双峰分布体积谱和化学组分体积谱两种方案进行循环试验获取最优拟合结果,使用散射积分浊度计和黑碳仪的实测数据对计算结果进行对比分析。结果Revised IMPROVE方程、总量双峰体积谱MIE方法和化学组分体积谱MIE方法都能较好地计算出了大气颗粒物消光系数,与观测结果回归方程的相关系数R分别达到0.952、0.9686和0.9734。体积谱分布参数的循环试验方法还同时可以获得气溶胶的体积谱分布参数,总量双峰体积谱和化学组分体积谱MIE方法得到的细颗粒和粗颗粒几何平均粒径分别为0.74、7.5μm和0.48、6.0μm。结论采用化学组分体积谱MIE方法计算的消光系数与观测结果最为接近,Revised IMPROVE方程也有较好的准确性,采用化学组分体积谱MIE方法得到的颗粒物体积谱峰值与实际观测结果也较为一致。 展开更多
关键词 消光系数 revised IMPROVE MIE方法
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集束化护理干预对老年冠心病患者MNA-SF、SF-36评分的影响 被引量:1
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作者 石娜 姚美杰 王小纯 《生命科学仪器》 2023年第S01期422-423,共2页
目的探究集束化优质护理模式对老年冠心病患者疗效以及对SF-36、MNA-SF评分的影响。方法以2018年1月至2019年1月我院治疗的150例老年冠心病患者纳入此次研究,将其应用随机数字法将其分为2组,各75例,分别采用两组护理检测患者的各项生化... 目的探究集束化优质护理模式对老年冠心病患者疗效以及对SF-36、MNA-SF评分的影响。方法以2018年1月至2019年1月我院治疗的150例老年冠心病患者纳入此次研究,将其应用随机数字法将其分为2组,各75例,分别采用两组护理检测患者的各项生化指标。结果两组患者在护理2个月后TC、HDL-C、ALB、WBC等指标明显升高(P<0.05),且集束化护理小组水平更高(P<0.05),TG和LDL-C水平明显降低(P<0.05),而集束化护理小组评分也明显低于常规护理组(P<0.05);两组患者经护理后MNA-SF和SF-36A评分明显升高(P<0.05),差异具有统计学意义,且集束化护理组较之于常规护理组评分更优(P<0.05);差异具有统计学意义。结论对老年冠心病患者采用集束化优质护理措施,能明显改善患者营养和健康状况,恢复其正常生理功能,是一种优质的护理措施,具有深远的临床应用价值。 展开更多
关键词 集束化护理 冠心病 老年 SF-36评分 mna-sf评分 护理效果
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Estimation of soil erosion risk within a small mountainous sub-watershed in Kerala,India,using Revised Universal Soil Loss Equation(RUSLE) and geo-information technology 被引量:35
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作者 V.Prasannakumar H.Vijith +1 位作者 S.Abinod N.Geetha 《Geoscience Frontiers》 SCIE CAS 2012年第2期209-215,共7页
A comprehensive methodology that integrates Revised Universal Soil Loss Equation (RUSLE) model and Geographic Information System (GIS) techniques was adopted to determine the soil erosion vulner- ability of a fore... A comprehensive methodology that integrates Revised Universal Soil Loss Equation (RUSLE) model and Geographic Information System (GIS) techniques was adopted to determine the soil erosion vulner- ability of a forested mountainous sub-watershed in Kerala, India. The spatial pattern of annual soil erosion rate was obtained by integrating geo-environmental variables in a raster based GIS method. GIS data layers including, rainfall erosivity (R), soil erodability (K), slope length and steepness (LS), cover management (C) and conservation practice (P) factors were computed to determine their effects on average annual soil loss in the area. The resultant map of annual soil erosion shows a maximum soil loss of 17.73 t h-1 y i with a close relation to grass land areas, degraded forests and deciduous forests on the steep side-slopes (with high LS ). The spatial erosion maps generated with RUSLE method and GIS can serve as effective inputs in deriving strategies for land planning and management in the environmentally sensitive mountainous areas. 展开更多
关键词 Soil erosion revised Universal Soil Loss Equation (RUSLE)GIS Pamba Western Ghats KERALA
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Assessing field vulnerability to phosphorus loss in Beijing agricultural area using Revised Field Phosphorus Ranking Scheme 被引量:7
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作者 LI Qi CHEN Li-ding +3 位作者 QI Xin ZHANG Xin-yu MA Yan FU Bo-jie 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第8期977-985,共9页
Guanting Reservoir, one of the drinking water supply sources of Beijing, suffers from water eutrophication. It is mainly supplied by Guishui River. Thus, to investigate the reasons of phosphorus (P) loss and improve... Guanting Reservoir, one of the drinking water supply sources of Beijing, suffers from water eutrophication. It is mainly supplied by Guishui River. Thus, to investigate the reasons of phosphorus (P) loss and improve the P management strategies in Guishui River watershed are important for the safety of drinking water in this region. In this study, a Revised Field P Ranking Scheme (PRS) was developed to reflect the field vulnerability of P loss at the field scale based on the Field PRS. In this new scheme, six factors are included, and each one was assigned a relative weight and a determination method. The affecting factors were classified into transport factors and source factors, and, the standards of environmental quality on surface water and soil erosion classification and degradation of the China were used in this scheme. By the new scheme, thirty-four fields in the Guishui River were categorized as "low", "medium" or "high" potential for P loss into the runoff. The results showed that the P loss risks of orchard and vegetable fields were higher than that of corn and soybean fields. The source factors were the main factors to affect P loss from the study area. In the study area, controlling P input and improving P usage efficiency are critical to decrease P loss. Based on the results, it was suggested that more attention should be paid on the fields of vegetable and orchard since they have extremely high usage rate of P and high soil test of P. Compared with P surplus by field measurements, the Revised Field PRS was more suitable for reflecting the characteristics of fields, and had higher potential capacity to identify critical source areas of P loss than PRS. 展开更多
关键词 phosphorus loss risk assessment field scale revised phosphorus ranking scheme management strategy
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Characteristics of canopy interception and its simulation with a revised Gash model for a larch plantation in the Liupan Mountains, China 被引量:2
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作者 Zebin Liu Yanhui Wang +7 位作者 Ao Tian Yu Liu Ashley A.Webb Yarui Wang Haijun Zuo Pengtao Yu Wei Xiong Lihong Xu 《Journal of Forestry Research》 SCIE CAS CSCD 2018年第1期187-198,共12页
Canopy interception is a significant proportion of incident rainfall and evapotranspiration of forest ecosystems. Hence, identifying its magnitude is vital for studies of eco-hydrological processes and hydrological im... Canopy interception is a significant proportion of incident rainfall and evapotranspiration of forest ecosystems. Hence, identifying its magnitude is vital for studies of eco-hydrological processes and hydrological impact evaluation. In this study, throughfall, stemflow and interception were measured in a pure Larix principis-rupprechtii Mayr.(larch) plantation in the Liupan Mountains of northwestern China during the growing season(May–October) of 2015, and simulated using a revised Gash model. During the study period, the total precipitation was 499.0 mm; corresponding total throughfall, stemflow and canopy interception were 410.3, 2.0 and 86.7 mm,accounting for 82.2, 0.4 and 17.4% of the total precipitation, respectively. With increasing rainfall, the canopy interception ratio of individual rainfall events decreased initially and then tended to stabilize. Within the study period, the simulated total canopy interception, throughfall and stemflow were 2.2 mm lower, 2.5 mm higher and 0.3 mm lower than their measured values, with a relative error of 2.5, 0.6 and 15.0%, respectively. As quantified by the model, canopy interception loss(79%) mainly consisted of interception caused by canopy adsorption, while the proportions of additional interception and trunk interception were small. The revised Gash model was highly sensitive to the parameter of canopy storage capacity,followed by the parameters of canopy density and mean rainfall intensity, but less sensitive to the parameters of mean evaporation rate, trunk storage capacity, and stemflow ratio. The revised Gash model satisfactorily simulated the total canopy interception of the larch plantation within the growing season but was less accurate for some individual rainfall events, indicating that some flaws exist in the model structure. Further measures to improve the model’s ability in simulating the interception of individual rainfall events were suggested. 展开更多
关键词 Canopy interception Larch plantation revised Gash model STEMFLOW THROUGHFALL
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Efficacy of the revised Vienna Classification for diagnosing colorectal epithelial neoplasias 被引量:6
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作者 Kenji Tominaga Sumio Fujinuma +3 位作者 Takuro Endo Yoshihisa Saida Kei Takahashi Iruru Maetani 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第19期2351-2356,共6页
AIM: To prospectively investigate the efficacy of the revised Vienna Classification for diagnosing colorectal epithelial neoplastic lesions in cold biopsy specimens.METHODS: Patients were selected for inclusion if t... AIM: To prospectively investigate the efficacy of the revised Vienna Classification for diagnosing colorectal epithelial neoplastic lesions in cold biopsy specimens.METHODS: Patients were selected for inclusion if they had colorectal epithelial lesions that were not considered suitable for direct endoscopic resection,These included colorectal polyps ≥ 10 mm and lesions suspected of being carcinomas capable of invading the colorectal submucosa or beyond, including strictures, based on the cold biopsies obtained from each lesion prior to resection. We investigated the relationship between diagnoses based on cold biopsy samples using the revised Vienna Classification and resected specimens of the same lesions, and the therapeutic implications of diagnoses made using the revised Vienna Classification. The same cold biopsy specimens were also examined using the Japanese Group Classification guidelines, and compared with the resected specimens of the same lesions for reference.RESULTS: A total of 179 lesions were identified. The sensitivity, specificity, positive and negativepredictive values of the revised Vienna Classification for distinguishing between intramucosal lesions and submucosal invasive carcinomas in cold biopsy specimens was 22.2%, 100%, 100%, and 71.4%,respectively, and for distinguishing between intramucosal lesions and those invading the submucosa or beyond was 59.7%, 100%, 100%, and 37.6%,respectively. The sensitivity, specificity, positive and negative predictive values of the Japanese Group Classification for distinguishing between intramucosal lesions and submucosal invasive carcinomas in cold biopsy specimens was 83.3%, 91.4%, 83.3%. and 91.4%, respectively, and for distinguishing between intramucosal lesions and those invading the submucosa or beyond was 95.1%, 91.4%, 97.9%, and 82.1%, respectively. A total of 137 of 144 carcinomas that had invaded the submucosa or beyond and three high-grade intraepithelial neoplasias were diagnosed as "carcinoma" using the Japanese Group Classification system.CONCLUSION: The revised Vienna Classification for cold biopsy specimens has high positive predictive value in the diagnosis of colorectal carcinoma invasive to the subrnucosa or beyond. 展开更多
关键词 BIOPSY Cancer COLONOSCOPY Colorectalepithelial neoplasia revised Vienna Classification
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Assessment of Point and Nonpoint Sources Pollution in Songhua River Basin,Northeast China by Using Revised Water Quality Model 被引量:14
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作者 YANG Yuhong YAN Baixing SHEN Wanbin 《Chinese Geographical Science》 SCIE CSCD 2010年第1期30-36,共7页
Individual participation of pollutants in the pollution load should be estimated even if roughly for the appropriate environmental management of a river basin.It is difficult to identify the sources and to quantify th... Individual participation of pollutants in the pollution load should be estimated even if roughly for the appropriate environmental management of a river basin.It is difficult to identify the sources and to quantify the load, especially in modeling nonpoint source.In this study a revised model was established by integrating point and nonpoint sources into one-dimensional Streeter-Phelps(S-P) model on the basis of real-time hydrologic data and surface water quality monitoring data in the Jilin Reach of the Songhua River Basin.Chemical oxygen demand(COD) and ammonia nitrogen(NH 3-N) loads were estimated.Results showed that COD loads of point source and nonpoint source were 134 958 t/yr and 86 209 t/yr, accounting for 61.02% and 38.98% of total loads, respectively.NH 3-N loads of point source and nonpoint source were 16 739 t/yr and 14 272 t/yr, accounting for 53.98% and 46.02%, respectively.Point source pollution was stronger than nonpoint source pollution in the study area at present.The water quality of upstream was better than that of downstream of the rivers and cities.It is indispensable to treat industrial wastewater and municipal sewage out of point sources, to adopt the best management practices to control diffuse pollutants from agricultural land and urban surface runoff in improving water quality of the Songhua River Basin.The revised S-P model can be successfully used to identify pollution source and quantify point source and nonpoint source loads by calibrating and validating. 展开更多
关键词 ammonia nitrogen chemical oxygen demand nonpoint source pollution point source pollution revised water quality model Songhua River Basin
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Revised Stratigraphy and Mineral Resources of Balochistan Basin, Pakistan: An Update 被引量:3
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作者 Muhammad Sadiq Malkani 《Open Journal of Geology》 2020年第7期784-828,共45页
The Balochistan basin is located on the south western part of Balochistan Province and also Pakistan. Balochistan super basin is subdivided into northern Balochistan (Pishin basin or Kakar Kohorasan basin represented ... The Balochistan basin is located on the south western part of Balochistan Province and also Pakistan. Balochistan super basin is subdivided into northern Balochistan (Pishin basin or Kakar Kohorasan basin represented as back arc basin), central Balochistan (Chagai-Raskoh-Wazhdad Magmatic arc and Hamuns-Inter arc basin) and southern Balochistan (Makran Siahan basin) basins. Balochistan basin consists of Cretaceous to recent sediments, diverse igneous rocks and low grade metamorphics. Balochistan basin is a leading basin which consists of very significant mineral deposits especially copper and gold deposits. These mineral resources need to be developed for the development of areas, province and Pakistan. During previous half century a lot of geological work has been done in Balochistan basin. Here the revised stratigraphic set up and its mineral resources with an update are being presented. 展开更多
关键词 revised Stratigraphy Mineral Resources Kakar-Khorasan Chagai-Raskoh-Wazhdad Magmatic Arcs Makran-Siahan Basin Balochistan Basin Pakistan
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REVISED k-ε TURBULENCE MODEL IN ELECTROMAGNETIC CONTINUOUS CASTING OF MELT 被引量:1
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作者 H.F. Huo and B.K. LiDepartment of Thermal Engineering, School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China. 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2003年第5期395-400,共6页
The research is motivated by the ongoing the electromagnetic continuous casting of molten metal. The revised k-ε model considering the effect of magnetic field application was derived. The specific model equations fo... The research is motivated by the ongoing the electromagnetic continuous casting of molten metal. The revised k-ε model considering the effect of magnetic field application was derived. The specific model equations for the electromagnetic braking were used to calculate the velocity distribution in the continuous casting mold of steel. The results show that the revised k-ε model considering the effect of magnetic field application tends to suppress the production of turbulence and difference between the conventional and revised k-e model is small. 展开更多
关键词 revised k-ε turbulence model electromagnetic continuous casting magnetic field
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Water Quality Evaluation in Tidal River Reaches of Liaohe River Estuary, China Using a Revised QUAL2K Model 被引量:7
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作者 YE Hanfeng GUO Shuhai +1 位作者 LI Fengmei LI Gang 《Chinese Geographical Science》 SCIE CSCD 2013年第3期301-311,共11页
Rivers in the Liaohe River Estuary area have been seriously polluted by discharges of wastewater containing petroleum pol- lutants and nutrients. In this paper, The Enhanced Stream Water Quality Model (QUAL2K) and i... Rivers in the Liaohe River Estuary area have been seriously polluted by discharges of wastewater containing petroleum pol- lutants and nutrients. In this paper, The Enhanced Stream Water Quality Model (QUAL2K) and its revised model as well as One-dimensional Tide Mean Model (1D model) were applied to predict and assess the water quality of the tidal fiver reach of the Liaohe River Estuary. Dissolved oxygen (DO), biochemical oxygen demand (BODs), ammonia nitrogen (NH3-N) and total phosphorus (TP) were chosen as water quality indices in the two model simulations. The modelled results show that the major reasons for degraded rivers remain petroleum and non-point source pollution. Tidal water also has a critical effect on the variation of water quality. The sensitivity analysis identifies that flow rate, point load and diffuse load are the most sensitive parameters for the four water quality indices in the revised QUAL2K simulation. Uncertainty analysis based on a Monte Carlo simulation gives the probability distribution of the four wa- ter quality indices at two locations (6.50 km and 44.84 km from the river mouth). The statistical outcomes indicate that the observed data fall within the 90% confidence intervals at all sites measured, and show that the revised QUAL2K gives better results in simulating the water quality of a tidal fiver. 展开更多
关键词 tidal river reach water quality evaluation revised QUAL2K model uncertainty analysis Liaohe River Estuary
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Aristolane‑type Sesquiterpenoids from Nardostachys chinensis and Revised Structure of Aristolanhydride 被引量:2
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作者 Li-Xia Wang Xian-Jun Jiang +3 位作者 Xiang-Mei Li Mei-Fen Mao Guo-Zhu Wei Fei Wang 《Natural Products and Bioprospecting》 CAS 2019年第2期149-155,共7页
Four hitherto unknown aristolane-type sesquiterpenes,including one novel 8,9-secoaristolane,namely secoaristolenedioic acid(1),two aristolone derivatives,namely 1α,2β-dihydroxyaristolone(2),9-epidebilon(3),and one r... Four hitherto unknown aristolane-type sesquiterpenes,including one novel 8,9-secoaristolane,namely secoaristolenedioic acid(1),two aristolone derivatives,namely 1α,2β-dihydroxyaristolone(2),9-epidebilon(3),and one rare aristolane-chalcone hybrid,namely 3′-hydroxynardoaristolone A(4)were isolated from the ethanol extract of the roots and rhizomes of Nardostachys chinensis.Their structures were elucidated on the basis of extensive spectroscopic analysis.In addition,the structure of aristolanhydride,recently isolated from the same species,was corrected by reanalysis of the published NMR data. 展开更多
关键词 Nardostachys chinensis Aristolane Secoaristolane Aristolane-chalcone hybrid Structural revision
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