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| 1 | 国外作物生长模型发展综述显示文摘伴随着系统科学和计算机技术的发展 ,作物生长模型研究从 6 0年代开始迅速发展起来 ,至今经历了从幼稚走向成熟 ,从经验走向机理 ,从理论走向实用的发展历程。目前正在逐渐成为土地资源评价、农作物生产管理决策。 | 谢云 James R Kiniry | 2002 | 作物学报2002,28,2: | 93 |
| 2 | 煤型稀有金属矿床:成因类型、赋存状态和利用评价显示文摘煤和含煤岩系中稀有金属元素的研究,是当今煤地质学研究的热点问题之一。煤和含煤岩系中高度富集并可以开发利用的稀有金属元素包括锂、钪、钛、钒、镓、锗、硒、锆、铌、铪、钽、铀、稀土元素(包括镧系元素和钇)、贵金属元素等。以煤-锗、煤-镓、煤-铀、煤-铌、煤-稀土元素等煤型稀有金属矿床为例,论述了这些矿床的地质成因、赋存状态和利用评价方法。煤型稀有金属矿床的研究,不仅对研究煤层的地质成因、煤层对比、含煤盆地形成与后期改造、区域地质历史演化和突发地质事件可以提供重要的煤地球化学和煤矿物学证据,而且对煤炭经济循环发展、煤炭利用过程中环境保护,以及对国家稀有金属资源安全也具有重要的现实和社会意义。 | 代世峰 任徳贻 周义平 Vladimir VSeredin 李大华 张名泉 James C Hower Colin R Ward 王西勃 赵蕾 宋晓林 | 2014 | 煤炭学报2014,39,8: | 111 |
| 3 | 钢渣沥青混合料应用现状显示文摘总结了钢渣的物理性质、化学成分及矿物相组成,分析了影响钢渣体积安定性的因素及其改善措施,探讨了钢渣沥青混合料的配合比设计方法,分析了钢渣沥青混合料的路用性能(高温稳定性、低温抗裂性、水稳定性、抗疲劳性、体积安定性、抗滑性)及其功能特性(导电性与微波加热),研究了钢渣沥青混合料的生态、社会及经济效益,介绍了国内外的工程应用。研究结果表明:钢渣可用于沥青混合料,且应为陈化半年以上的转炉钢渣或电炉钢渣,钢渣的物理力学性能优良,而化学成分及矿物相组成受炼钢工艺影响有所区别,钢渣体积安定性的不足可通过预处理或陈化处理得到较好的改善,钢渣沥青混合料的配合比设计要点包括钢渣替代传统集料的方式和比例、沥青混合料级配修正、有效相对密度测定以及最佳油石比的确定,钢渣沥青混合料的路用性能及功能特性优于天然集料沥青混合料,具有较好的环境影响性且综合经济效益更高,关于钢渣沥青混合料路用性能的研究较多,而作用机理方面相对缺乏,关键性的限制因素如密度较高、体积安定性不良、混合料沥青用量增加等仍未得到根本性解决,未来应重点研究钢渣沥青路面的长期性能及质量控制体系,并开展全寿命周期研究,以加快钢渣沥青路面的应用与推广。 | 何亮 詹程阳 吕松涛 GRENFELL James 高杰 KOWALSKI Karol J VALENTIN Jan 谢君 REKLidija 凌天清 | 2020 | 交通运输工程学报2020,20,2: | 68 |
| 4 | The Open Quantum Materials Database (OQMD): assessing the accuracy of DFT formation energies显示文摘The Open Quantum Materials Database(OQMD)is a high-throughput database currently consisting of nearly 300,000 density functional theory(DFT)total energy calculations of compounds from the Inorganic Crystal Structure Database(ICSD)and decorations of commonly occurring crystal structures.To maximise the impact of these data,the entire database is being made available,without restrictions,at www.oqmd.org/download.In this paper,we outline the structure and contents of the database,and then use it to evaluate the accuracy of the calculations therein by comparing DFT predictions with experimental measurements for the stability of all elemental ground-state structures and 1,670 experimental formation energies of compounds.This represents the largest comparison between DFT and experimental formation energies to date.The apparent mean absolute error between experimental measurements and our calculations is 0.096 eV/atom.In order to estimate how much error to attribute to the DFT calculations,we also examine deviation between different experimental measurements themselves where multiple sources are available,and find a surprisingly large mean absolute error of 0.082 eV/atom.Hence,we suggest that a significant fraction of the error between DFT and experimental formation energies may be attributed to experimental uncertainties.Finally,we evaluate the stability of compounds in the OQMD(including compounds obtained from the ICSD as well as hypothetical structures),which allows us to predict the existence of~3,200 new compounds that have not been experimentally characterised and uncover trends in material discovery,based on historical data available within the ICSD. | Scott Kirklin James E Saal Bryce Meredig Alex Thompson Jeff W Doak Muratahan Aykol Stephan Rühl Chris Wolverton | 2015 | npj Computational Materials2015,,1: | 62 |
| 5 | 帕博利珠单抗单用或与放疗联用治疗转移性非小细胞肺癌:两个随机试验的汇总分析显示文摘背景放疗可以提高整个机体对免疫治疗的应答。在Ⅱ期PEMBRO-RT研究和Ⅰ/Ⅱ期MDACC研究中,患有转移性非小细胞肺癌(NSCLC)的患者被随机分配入组,接受免疫治疗(帕博利珠单抗)+放疗联合疗法,或免疫治疗单一疗法。当上述2个研究单独分析时,联合疗法组显示出潜在获益。由于每个研究的样本量较小,缓解率和结局并未显示出统计学意义,然而却有显著的临床获益。因此,本研究进行汇总分析,来判断放疗是否会改善转移性NSCLC患者的免疫治疗应答。方法PEMBRO-RT和MDACC研究纳入标准:患者年龄≥18岁,患有转移性NSCLC,且有≥1处未经放疗照射的病灶,以便进行射野外应答监测。PEMBRO-RT研究纳入曾接受过化疗患者,MDACC研究纳入曾接受过治疗或新诊断患者。2个研究中的患者均未接受过免疫治疗。在PEMBRO-RT研究中患者被等比例随机分配入组,并根据吸烟状态进行分层(分为<10年组和≥10年组)。MDACC研究的患者根据放疗计划可行性被等比例随机分配入2个受试组。由于联合治疗组的干预本质,每个研究中的放疗均不适用盲法。在2个研究中,不论是否进行放疗,均静脉滴入帕博利珠单抗(每3周200 mg)。在PEMBRO-RT研究中,在放疗(24 Gy 3次分割照射)结束后1周给予第1剂帕博利珠单抗。在MDACC研究中,在第1次放疗(50 Gy 4次分割照射或45 Gy 15次分割照射)同时给予帕博利珠单抗。仅检测未经照射病灶的应答。本研究的终点为最佳射野外(远隔)应答率(ARR)、最佳射野外疾病控制率(ACR)、12周时ARR、12周时ACR、无进展生存期(PFS)和总生存期(OS)。2个研究的意向治疗(ITT)人群均纳入分析。PEMBRO-RT研究(NCT02492568)和MDACC研究(NCT02444741)均在ClinicalTrials.gov上注册。发现纳入148例患者,76例接受帕博利珠单抗治疗,72例接受帕博利珠单抗+放疗治疗。所有患者随访时间中位数为33个月[四分位距(IQR):32.4~33.6]。148例患者中124例(84%)组织学特征为非鳞癌,111例(75%)患者曾经接受过化疗。组间没有基线特征差异,包括PD-L1表达状态和转移灶体积。最常见的照射部位为肺转移灶(39%,28/72)、胸腔内淋巴结(21%,15/72)和非原发灶(17%,12/72)。帕博利珠单抗组和联合治疗组的最佳ARR分别为19.7%(15/76)和41.7%(30/72),OR=2.96,95%CI:1.42~6.20,P=0.0039;最佳ACR分别为43.4%(33/76)和65.3%(47/72),OR=2.51,95%CI:1.28~4.91,P=0.0071;PFS中位数分别为4.4(IQR:2.9~5.9)和9.0个月(IQR:6.8~11.2),HR=0.67,95%CI:0.45~0.99,P=0.045;OS中位数分别为8.7(IQR:6.4~11.0)和19.2个月(IQR:14.6~23.8),OR=0.67,95%CI:0.54~0.84,P=0.0004。在汇总分析中没有发现新的安全问题。解读帕博利珠单抗免疫疗法+放疗显著提高转移性NSCLC患者的应答和改善治疗结局。这些结果需要在三期临床试验中进行验证。 | 陈大卫(翻译) 于金明(校对) Willemijn S M E Theelen Vivek Verma Brian P Hobbs Heike M U Peulen Joachim G J V Aerts Idris Bahce Anna Larissa N Niemeijer Joe Y Chang Patricia M de Groot Quynh-Nhu Nguyen Nathan I Comeaux George R Simon Ferdinandos Skoulidis Steven H Lin Kewen He Roshal Patel John Heymach Paul Baas James W Welsh | 2021 | 中华肿瘤防治杂志2021,28,24: | 49 |
| 6 | 幽门螺杆菌粪便抗原试验的多中心研究显示文摘目的:评估幽门螺杆菌(H.pylori)粪便抗原(HpSA)试验诊断H.pylori感染的准确性。方法:应用酶免疫反应原理进行HpSA试验,在大样本、多中心研究中进行HpSA试验的评估。995例因消化不良症状接受胃镜检查者纳入本研究,所有患者均以HpSA试验、快速尿素酶试验(RUT)和组织学(或培养)方法检测H.pylori。以RUT和组织学(或培养)联合检测作为“金标准”,两项试验均阳性者定为H.pylori感染。结果:以光密度值≥0.16为阳性,HpSA检测诊断H.pylori感染的敏感性为93.5%(478/511),特异性为94.2%(456/484),阳性预测值为94.5%(478/506),阴性预测值为93.3%(456/489),总的检测准确性为93.9%(934/995)。结论:HpSA试验是一种简便、准确的非侵入性H.pylori感染检测方法。 | 刘文忠 萧树东 王吉耀 赵志泉 钱家鸣 胡伏莲 胡品津 Many Vazquez Michael Boieraguel James R Leroy | 2002 | 胃肠病学2002,7,3: | 26 |
| 7 | High-intensity focused ultrasound ablation:An effective bridging therapy for hepatocellular carcinoma patients显示文摘AIM:To analyze whether high-intensity focused ultrasound(HIFU) ablation is an effective bridging therapy for patients with hepatocellular carcinoma(HCC).METHODS:From January 2007 to December 2010,49 consecutive HCC patients were listed for liver transplantation(UCSF criteria).The median waiting time for transplantation was 9.5 mo.Twenty-nine patients received transarterial chemoembolization(TACE) as a bringing therapy and 16 patients received no treatment before transplantation.Five patients received HIFU ablation as a bridging therapy.Another five patients with the same tumor staging(within the UCSF criteria) who received HIFU ablation but not on the transplant list were included for comparison.Patients were comparable in terms of Child-Pugh and model for end-stage liver disease scores,tumor size and number,and cause of cirrhosis.RESULTS:The HIFU group and TACE group showed no difference in terms of tumor size and tumor number.One patient in the HIFU group and no patient in the TACE group had gross ascites.The median hospital stay was 1 d(range,1-21 d) in the TACE group and two days(range,1-9 d) in the HIFU group(P < 0.000).No HIFU-related complication occurred.In the HIFU group,nine patients(90%) had complete response and one patient(10%) had partial response to the treatment.In the TACE group,only one patient(3%) had response to the treatment while 14 patients(48%) had stable disease and 14 patients(48%) had progressive disease(P = 0.00).Seven patients in the TACE group and no patient in the HIFU group dropped out from the transplant waiting list(P = 0.559).CONCLUSION:HIFU ablation is safe and effective in the treatment of HCC for patients with advanced cirrhosis.It may reduce the drop-out rate of liver transplant candidate. | Tan To Cheung Sheung Tat Fan See Ching Chan Kenneth SH Chok Ferdinand SK Chu Caroline R Jenkins Regina CL Lo James YY Fung Albert CY Chan William W Sharr Simon HY Tsang Wing Chiu Dai Ronnie TP Poon Chung Mau Lo | 2013 | World Journal of Gastroenterology2013,19,20: | 23 |
| 8 | Contribution of oxidative stress to pulmonary arterial hypertension显示文摘Recent data implicate oxidative stress as a mediator of pulmonary hypertension (PH) and of the associated pathological changes to the pulmonary vasculature and right ventricle (RV). Increases in reactive oxygen species (ROS), altered redox state, and elevated oxidant stress have been demonstrated in the lungs and RV of several animal models of PH, including chronic hypoxia, monocrotaline toxicity, caveolin-1 knock-out mouse, and the transgenic Ren2 rat which overexpresses the mouse renin gene. Generation of ROS in these models is derived mostly from the activities of the nicotinamide adenine dinucleotide phosphate oxidases, xanthine oxidase, and uncoupled endothelial nitric oxide synthase. As disease progresses circulating monocytes and bone marrow-derived monocytic progenitor cells are attracted to and accumulate in the pulmonary vasculature. Once established, these inflammatory cells generate ROS and secrete mitogenic and fibrogenic cytokines that induce cell proliferation and fibrosis in the vascular wall resulting in progressive vascular remodeling. Deficiencies in antioxidant enzymes also contribute to pulmonary hypertensive states. Current therapies were developed to improve endothelial function, reduce pulmonary artery pressure, and slow the progression of vascular remodeling in the pulmonary vasculature by targeting deficiencies in either NO (PDE-type 5 inhibition) or PGI 2 (prostacyclin analogs), or excessive synthesis of ET-1 (ET receptor blockers) with the intent to improve patient clinical status and survival. New therapies may slow disease progression to some extent, but long term management has not been achieved and mortality is still high. Although little is known concerning the effects of current pulmonary arterial hypertension treatments on RV structure and function, interest in this area is increasing. Development of therapeutic strategies that simultaneously target pathology in the pulmonary vasculature and RV may be beneficial in reducing mortality associated with RV failure. | Vincent G DeMarco Adam T Whaley-Connell James R Sowers Javad Habibi Kevin C Dellsperger | 2010 | World Journal of Cardiology2010,2,10: | 21 |
| 9 | Heme oxygenase system in hepatic ischemia-reperfusion injury显示文摘Hepatic ischemia-reperfusion injury (IRI) limits access to transplantation. Heme oxygenase-1 (HO-1) is a powerful antioxidant enzyme which degrades free heme into biliverdin,free iron and carbon monoxide. HO-1 and its metabolites have the ability to modulate a wide variety of inflammatory disorders including hepatic IRI. Mechanisms of this protective effect include reduction of oxygen free radicals,alteration of macrophage and T cell phenotype. Further work is required to understand the physiological importance of the many actions of HO-1 identified experimentally,and to harness the protective effect of HO-1 for therapeutic potential. | James A Richards Stephen J Wigmore Luke R Devey | 2010 | World Journal of Gastroenterology2010,16,48: | 14 |
| 10 | Vascular endothelial growth factor for the treatment of femoral head osteonecrosis: An experimental study in canines显示文摘AIM To evaluate the treatment of osteonecrosis of the femoral head(ONFH) with the use of vascular endothelial growth factor(VEGF).METHODS In 30 mature beagles(6 groups of 5 beagles) ONFH was induced cryosurgically and one of the following solutions was administered locally in the femoral head(FH) in each group: Single injection of 500 μg VEGF(t-VEGFμ group); single injection of 500 ng VEGF(t-VEGFn group); continuous delivery of 500 μg VEGF through osmotic micropump(t-VEGFpump-μ group); continuous delivery of 500 ng VEGF through osmotic micropump(t-VEGFpump-n group); single injection of 0.9% sodium chloride(t-NS group), while one group that served as control group did not receive any local solution(No-t group). FHs were retrieved 12 wk postoperatively, underwent decalcification and hematoxylin/eosin and toluidine blue staining. In two canines per group, one half of FH was processed without decalcification and stained with modified Masson Trichrome. Histological sections were observed by light microscopy and measured with a semi-automatized bone histomorphometry system and Bone Volume/Total Volume(BV/TV), Marrow Volume/Total Volume(MaV/TV), and Trabecular Thickness(TbT h) were assessed. Standard and robust tests(Welch, Brown Forsythe) of analysis of variance along with multiple comparisons, were carried out among the categories.RESULTS The untreated(No-t) group had signs of osteonecrosis, whereas the VEGF groups revealed reversal of the osteonecrosis. Statistical analysis of the decalcified specimens revealed a significantly better BV/TV ratio and a higher Tb Th between the VEGF treatment groups(except the t-VEGFn group) and the No-t group or the control t-NS group. Single dose 500 μg VEGF group had significantly better BV/TV ratio and higher Tb Th when compared to the No-t group(50.45 ± 6.18 vs 29.50 ± 12.27, P = 0.002 and 151.44 ± 19.07 vs 107.77 ± 35.15, P = 0.161 respectively) and the control t-NS group(50.45 ± 6.18 vs 30.9 ± 6.67, P = 0.004 and 151.44 ± 19.07 vs 107.14 ± 35.71, P = 0.151 respectively). Similar differences were found for the prolonged VEGF delivery/pump groups of 500 μg and 500 ng. Analysis of the totality of specimens(decalcified/non-decalcified) enhanced the aforementioned differences and additionally revealed significant differences in the comparison of the TbT h.CONCLUSION In an experimental model of ONFH in canines it was found that local treatment with VEGF leads to bone tissue remodeling and new bone formation. | Zoe H Dailiana Nikolaos Stefanou Lubna Khaldi Georgios Dimakopoulos James R Bowers Cristian Fink James R Urbaniak | 2018 | World Journal of Orthopedics2018,9,9: | 13 |
| 11 | 职业教育基本问题访谈录(I) 职业教育是什么显示文摘全国教育科学“十五”规划国家一般课题《职业教育几个基本问题研究》(BJA010100)课题组就“职业教育的基本问题”对国内外职业教育界的专家、学者进行了访谈,使我们看到了对此问题的不同角度和层面的理解。这是一次思想的碰撞,有利于我们深化对职业教育基本问题的认识。本刊特将访谈记录分专题编辑处理,并从本期起连续刊发,本期论题为“职业教育是什么?” | 王明达 杨金土 刘来泉 余祖光 高奇 Josie Misko Susan Dave Jorn Saunder 钱景舫 Friedhelm Eicker James R Stone | 2006 | 中国职业技术教育2006,22,14: | 12 |
| 12 | Calcium signaling and T-type calcium channels in cancer cell cycling显示文摘Regulation of intracellular calcium is an important signaling mechanism for cell proliferation in both normal and cancerous cells. In normal epithelial cells, free calcium concentration is essential for cells to enter and accomplish the S phase and the M phase of the cell cycle. In contrast, cancerous cells can pass these phases of the cell cycle with much lower cytoplasmic free calcium concentrations, indicating an alternative mechanism has developed for fulfilling the intracellular calcium requirement for an increased rate of DNA synthesis and mitosis of fast replicating cancerous cells. The detailed mechanism underlying the altered calcium loading pathway remains unclear; however, there is a growing body of evidence that suggests the T-type Ca2+ channel is abnormally expressed in cancerous cells and that blockade of these channels may reduce cell proliferation in addition to inducing apoptosis. Recent studies also show that the expression of T-type Ca2+ channels in breast cancer cells is proliferation state dependent, i.e. the channels are expressed at higher levels during the fast-replication period, and once the cells are in a non-proliferation state, expression of this channel isminimal. Therefore, selectively blocking calcium entry into cancerous cells may be a valuable approach for preventing tumor growth. Since T-type Ca2+ channels are not expressed in epithelial cells, selective T-type Ca2+ channel blockers may be useful in the treatment of certain types of cancers. | James T Taylor Xiang-Bin Zeng Jonathan E Pottle Kevin Lee Alun R Wang Stephenie G Yi lennifer A S Scruggs Suresh S Sikka Ming Li | 2008 | World Journal of Gastroenterology2008,14,32: | 12 |
| 13 | Relationship between the exocrine and endocrine pancreas after acute pancreatitis显示文摘AIM:To determine the prevalence and time course of pancreatic exocrine insufficiency in individuals with newly diagnosed prediabetes or diabetes mellitus after acute pancreatitis.METHODS:Relevant literature cited in three major biomedical journal databases(EMBASE,MEDLINE,and Scopus)was reviewed independently by two authors.There were no language constraints but the search was limited to human studies.Studies included were cohort studies of adult patients who were discharged after an attack of acute pancreatitis.Patients were excluded if they were under 18 years of age or had a previous diagnosis of prediabetes or diabetes mellitus,pancreatic exocrine insufficiency,or chronic pancreatitis.The main outcome measure was the prevalence of concomitant pancreatic exocrine insufficiency in patients who were diagnosed with prediabetes and diabetes mellitus after an attack of acute pancreatitis.Subgroup analysis was conducted for patients who were diagnosed with prediabetes only and those who were diagnosed withdiabetes mellitus only.Subgroup analysis looking at the time course of concomitant pancreatic exocrine and endocrine insufficiency was also conducted.Pooled prevalence and corresponding 95%confidence intervals were calculated for all outcome measures and P-values<0.05 were deemed statistically significant.RESULTS:Eight clinical studies comprising of 234patients met all eligibility criteria.The pooled prevalence of newly diagnosed prediabetes or diabetes in individuals after acute pancreatitis was 43%(95%CI:30%-56%).The pooled prevalence of pancreatic exocrine insufficiency in individuals after acute pancreatitis was 29%(95%CI:19%-39%).The prevalence of concomitant pancreatic exocrine insufficiency in individuals with newly diagnosed prediabetes or diabetes was 40%(95%CI:25%-55%).The prevalence of concomitant pancreatic exocrine insufficiency among individuals with prediabetes alone and diabetes mellitus alone was 41%(95%CI:12%-75%)and 39%(95%CI:28%-51%),respectively.Further analysis showed that the prevalence of concomitant pancreatic exocrine insufficiency in individuals with prediabetes or diabetes decreases over time after an attack of acute pancreatitis.CONCLUSION:Pancreatic exocrine insufficiency occurs in 40%of individuals with newly diagnosed prediabetes or diabetes mellitus after acute pancreatitis.Further studies are needed to investigate the pathogenesis of diabetes in this setting. | Stephanie L M Das James I C Kennedy Rinki Murphy Anthony R J Phillips John A Windsor Maxim S Petrov | 2014 | World Journal of Gastroenterology2014,20,45: | 9 |
| 14 | Macrophage migration inhibitory factor gene polymorphisms in inflammatory bowel disease: An association study in New Zealand Caucasians and meta-analysis显示文摘AIM:To investigate the association of macrophage migration inhibitory factor(MIF)promoter polymorphisms with inflammatory bowel disease(IBD)risk.METHODS:One thousand and six New Zealand Caucasian cases and 540 Caucasian controls were genotyped for the MIF SNP-173G>C(rs755622)and the repeat polymorphism CATT5-8(rs5844572)using a predesigned TaqMan SNP assay and capillary electrophoresis,respectively.Data were analysed for single site and haplotype association with IBD risk and phenotype.Meta-analysis was employed,to assess cumulative evidence of association of MIF-173G>C with IBD.All published genotype data for MIF-173G>C in IBD were identified using PubMed and subsequently searching the references of all PubMed-identified studies.Imputed genotypes for MIF-173G>C were generated from the Wellcome Trust Case Control Consortium(and National Institute of Diabetes and Digestive and Kidney Diseases).Separate meta-analyses were performed on Caucasian Crohn’s disease(CD)(3863 patients,6031controls),Caucasian ulcerative colitis(UC)(1260 patients,1987 controls),and East Asian UC(416 patients and 789 controls)datasets using the Mantel-Haenszel method.The New Zealand dataset had 93%power,and the meta-analyses had 100%power to detect an effect size of OR=1.40 atα=0.05,respectively.RESULTS:In our New Zealand dataset,single-site analysis found no evidence of association of MIF polymorphisms with overall risk of CD,UC,and IBD or disease phenotype(all P values>0.05).Haplotype analysis found the CATT5/-173C haplotype occurred at a higher frequency in New Zealand controls compared to IBD patients(0.6 vs 0.01;P=0.03,OR=0.22;95%CI:0.05-0.99),but this association did not survive bonferroni correction.Meta-analysis of our New Zealand MIF-173G>C data with data from seven additional Caucasian datasets using a random effects model found no association of MIF polymorphisms with CD,UC,or overall IBD.Similarly,meta-analysis of all published MIF-173G>C data from East Asian datasets(416UC patients,789 controls)found no association of this promoter polymorphism with UC. | James D Falvey Robert W Bentley Tony R Merriman Mark B Hampton Murray L Barclay Richard B Gearry Rebecca L Roberts | 2013 | World Journal of Gastroenterology2013,19,39: | 9 |
| 15 | 在结肠和直肠的癌症的淋巴节点收获: 当前的考虑显示文摘 The prognostic significance of identifying lymph node(LN) metastases following surgical resection for colon and rectal cancer is well recognized and is reflected in accurate staging of the disease.An established body of evidence exists,demonstrating an association between a higher total LN count and improved survival,particularly for node negative colon cancer.In node positive disease,however,the lymph node ratios may represent a better prognostic indicator,although the impact of this on clinical treatment has yet to be universally established.By extension,strategies to increase surgical node harvest and/or laboratory methods to increase LN yield seem logical and might improve cancer staging.However,debate prevails as to whether or not these extrapolations are clinically relevant,particularly when very high LN counts are sought.Current guidelines recommend a minimum of 12 nodes harvested as the standard of care,yet the evidence for such is questionable as it is unclear whether an increasing the LN count results in improved survival.Findings from modern treatments,including down-staging in rectal cancer using pre-operative chemoradiotherapy,paradoxically suggest that lower LN count,or indeed complete absence of LNs,are associated with improved survival;implying that using a specific number of LNs harvested as a measure of surgical quality is not always appropriate.The pursuit of a sufficient LN harvest represents good clinical practice;however,recent evidence shows that the exhaustive searching for very high LN yields may be unnecessary and has little in? uence on modern approaches to treatment. | James R McDonald Andrew G Renehan Sarah T O’Dwyer Najib Y Haboubi | 2012 | World Journal of Gastrointestinal Surgery2012,4,1: | 8 |
| 16 | 酒精相关性肝病的研究进展和临床现状显示文摘酒精相关性肝病的研究进展和临床现状张育明,段芳龄,吴醒民JameswWoodJosephRBertino酒精问题目有人类文字记载以来就已存在,唯其与肝病的关系只是从17世纪才引起人们的注意(4-7)。肝硬化在酗酒人群中的发病率高于非饮酒人群七倍以上(... | 张育明 段芳龄 吴醒民 James w wood Joseph R Bertinno | 1996 | 胃肠病学和肝病学杂志1996,5,3: | 8 |
| 17 | Understanding important features of deep learning models for segmentation of high-resolution transmission electron microscopy images显示文摘Cutting edge deep learning techniques allow for image segmentation with great speed and accuracy.However,application to problems in materials science is often difficult since these complex models may have difficultly learning meaningful image features that would enable extension to new datasets.In situ electron microscopy provides a clear platform for utilizing automated image analysis.In this work,we consider the case of studying coarsening dynamics in supported nanoparticles,which is important for understanding,for example,the degradation of industrial catalysts.By systematically studying dataset preparation,neural network architecture,and accuracy evaluation,we describe important considerations in applying deep learning to physical applications,where generalizable and convincing models are required.With a focus on unique challenges that arise in high-resolution images,we propose methods for optimizing performance of image segmentation using convolutional neural networks,critically examining the application of complex deep learning models in favor of motivating intentional process design. | James P.Horwath Dmitri N.Zakharov Rémi Mégret Eric A.Stach | 2020 | npj Computational Materials2020,,1: | 8 |
| 18 | Dynamic chromatin states in human ES cells reveal potential regulatory sequences and genes involved in pluripotency显示文摘Pluripotency,一个细胞的能力区分并且产生所有胚胎的系,定义象胚胎的茎(ES ) 那样的哺乳动物的细胞类型的一个小数字细胞。当它通常被保持了时,那 pluripotency 是 transcriptional 的产品激活并且维持关键干细胞基因的表达式的规章的网络,积累的证据在建立并且保卫 ES 房间的 pluripotency 为 epigenetic 进程正在指向一个关键角色,象维持区分的房间类型的身份一样。以便更好在 pluripotency 理解 epigenetic 机制的角色,我们检验了在经历区别进一个 mesendodermal 系的人的 ES 房间(hESCs ) 染色体宽的染色质修正的动力学。我们发现在倡导者的染色质修正在区别期间仍然保持大部分不变,除了在在在 H3K27 的 acetylation 和 methylation 之间的一个动态开关标记在基因表示的激活和 silencing 之间的转变的倡导者的一个小数字,建议在在大多数差别上的房间命运承诺的一个层次表示了基因。我们也在 50 000 潜在的 enhancers 上印射,并且在染色质修正,特别 H3K4me1 和 H3K27ac 观察了大得多的动力学,它与他们的潜在的目标基因的表示相关。这些 enhancers 的进一步的分析揭示了 pluripotency 和可以在 hESCs 授与发展胜任的一个平衡状态的一口染色质签名陈述语气的潜在地关键的 transcriptional 管理者。我们的结果提供在定义 enhancers 和 pluripotency 支持染色质修正的角色的新证据。 | R David Hawkins Gary C Hon Chuhu Yang Jessica E Antosiewicz-Bourget Leonard K Lee Que-Minh Ngo Sarit Klugman Keith A Ching Lee E Edsall Zhen Ye Samantha Kuan Pengzhi Yu Hui Liu Xinmin Zhang Roland D Green Victor V Lobanenkov Ron Stewart James A Thomson Bing Ren | 2011 | Cell Research2011,21,10: | 6 |
| 19 | Small molecules enable OCT4-mediated direct reprogramming into expandable human neural stem cells显示文摘 | Saiyong Zhu Raiesh Ambasudhan Woong Sun Hyun Jung Kim Maria Talantova Xiaojing Wang Mingliang Zhang Yu Zhang Timothy Laurent James Parker Han-Seop Kim Jeffrey D Zaremba Sofiyan Saleem Sara Sanz-Blasco Eliezer Masliah Scott R McKercher Yee Sook Cho Stuart A Lipton Janghwan Kim Sheng Ding | 2014 | Cell Research2014,24,1: | 6 |
| 20 | Developmental and Feedforward Control of the Expression of Folate Biosynthesis Genes in Tomato Fruit显示文摘很少植物怎么调整他们的叶酸的内容被知道,包括叶酸的生合成基因的表达式是否在开发期间被安排或由叶酸的层次调制了。也很不叶酸的层次怎么影响另外的基因的表示被知道。这些点用为高叶酸的内容设计的野类型的西红柿水果和水果被探讨。在野类型的水果,在叶酸的生合成指定早步的基因的表示在开发而是另外的基因的期间衰退了。在设计水果 overexpressing 外国 GTP cyclohydrolase 我和 aminodeoxychorismate synthase 基因,各自的内长的基因的表示没变化,但是三下游的小径 genesaminodeoxychorismate lyase , dihydroneopterin aldolase ,和 mitochondrial folylpolyglutamate 的 synthaserespectively 增加了由直到7.8-,2.8-,和1.7褶层,显然响应特定的叶酸的小径代谢物的逐渐增加。这些结果显示在水果,某些叶酸的小径基因发展地被调整并且某些其它由小径中介服从于前馈控制控制。Microarray 分析显示出那仅仅 14 个另外的抄本(11 ? 000 调查了) 在丰富增加了由双重或更在里面高度叶酸的水果,证明叶酸的小径基因的正式就职是相对特定的。 | Jeffrey C. Wallera Tariq A. Akhtar Aurora Lara-Nunez Jesse F. Gregory lli Ryan R McQuinn James J. Giovannoni Andrew D. Hanson | 2010 | Molecular Plant2010,3,1: | 5 |