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生物炭对黄绵土中NO_(3)^(-)-N运移过程影响及模拟

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环境科学 2024年第5期45卷 2905-2912页

作者：白一茹刘旭张钰涵张睿媛马艳王幼奇宁夏大学地理科学与规划学院银川750021 宁夏大学生态环境学院银川750021 西北土地退化与生态恢复国家重点实验室培育基地银川750021

为探究不同施加量生物炭对黄绵土NO_(3)^(-)-N运移过程及特征的影响,以生物炭与黄绵土质量比分别为0%(T0)、1%(T1)、2%(T2)、3%(T3)、4%(T4)和5%(T5)的6组混合土样为研究对象,以NO_(3)^(-)-N为示踪物质,通过室内土柱溶质运移模拟试验,... 详细信息

为探究不同施加量生物炭对黄绵土NO_(3)^(-)-N运移过程及特征的影响,以生物炭与黄绵土质量比分别为0%(T0)、1%(T1)、2%(T2)、3%(T3)、4%(T4)和5%(T5)的6组混合土样为研究对象,以NO_(3)^(-)-N为示踪物质,通过室内土柱溶质运移模拟试验,研究了不同生物炭施加量对黄绵土中NO_(3)^(-)-N运移过程影响并进行模型模拟.结果表明,NO_(3)^(-)-N在黄绵土中的穿透曲线随生物炭施加量增加明显右移,峰值逐渐降低.初始穿透时间、完全穿透时间及穿透总历时均随生物炭施加量增大而增加,T1、T2、T3、T4和T5处理NO_(3)^(-)穿透总历时分别是T0的1.26、2.31、2.72、3.22和3.57倍.两区模型(TRM)的R2>0.997,RMSE<2.083,相较于对流-弥散方程(CDE),TRM模型拟合精度更高,能较好地模拟不同含量生物炭施加后的黄绵土中NO_(3)^(-)-N运移过程.对TRM模型拟合参数进行分析发现,随生物炭施加量增加,平均孔隙流速、水动力弥散系数和可动区含水比率均逐渐减小,而弥散度和质量交换系数呈现增加的趋势.研究显示,生物炭有效增强了黄绵土对NO_(3)^(-)-N的固持能力,减少了NO_(3)^(-)-N向地下水体的渗漏,对保持土壤肥力与防止地下水污染具有重要作用.

关键词：生物炭硝态氮穿透曲线对流-弥散方程(CDE) 两区模型(TRM)

Complete or partial split in associating liver partition and portal vein ligation for staged hepatectomy: A systematic review and meta-analysis

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World Journal of Gastroenterology 2019年第39期25卷 6016-6024页

作者： Han-Chun Huang Jin Bian yi bai Xin Lu yi-Yao Xu Xin-Ting Sang Hai-Tao Zhao Department of Liver Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College

BACKGROUND Associating liver partition and portal vein ligation for staged hepatectomy(ALPPS)has been adopted by liver surgeons in recent years.However,high morbidity and mortality rates have limited the promotion of this technique.Some recent studies have suggested that ALPPS with a partial split can effectively induce the growth of future liver remnant(FLR)similar to a complete split with better postoperative safety profiles.However,some others have suggested that ALPPS can induce more rapid and adequate FLR growth,but with the same postoperative morbidity and mortality rates as in partial split of the liver parenchyma in ALPPS(p-ALPPS).AIM To perform a systematic review and meta-analysis on ALPPS and p-ALPPS.METHODS A systematic literature search of PubMed,Embase,the Cochrane Library,and ClinicalTrials.gov was performed for articles published until June 2019.Studies comparing the outcomes of p-ALPPS and ALPPS for a small FLR in consecutive patients were included.Our main endpoints were the morbidity,mortality,and FLR hypertrophy rates.We performed a subgroup analysis to evaluate patients with and without liver cirrhosis.We assessed pooled data using a random-effects model.RESULTS Four studies met the inclusion criteria.Four studies reported data on morbidity and mortality,and two studies reported the FLR hypertrophy rate and one study involved patients with cirrhosis.In the non-cirrhotic group,p-ALPPS-treated patients had significantly lower morbidity and mortality rates than ALPPStreated patients[odds ratio(OR)=0.2;95%confidence interval(CI):0.07–0.57;P=0.003 and OR=0.16;95%CI:0.03-0.9;P=0.04].No significant difference in the FLR hypertrophy rate was observed between the two groups(P>0.05).The total effects indicated no difference in the FLR hypertrophy rate or perioperative morbidity and mortality rates between the ALPPS and p-ALPPS groups.In contrast,ALPPS seemed to have a better outcome in the cirrhotic group.CONCLUSION The findings of our study suggest that p-ALPPS is safer than ALPPS in patients without

关键词： Liver,Cancer Partial split Staged hepatectomy Systematic review Metaanalysis

城市桥梁智能施工与施工过程监控的创新技术探索

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智能建筑与智慧城市 2024年第2期 163-165页

作者：白毅飞中铁建设集团有限公司

城市桥梁工程施工受场地条件、周边环境的影响较大,应该根据实际施工需求,不断丰富施工方法,创新施工工艺,运用先进机械设备,提高施工自动化、智能化水平。文章研究了城市桥梁智能施工与施工过程监控的创新技术探索,首先分析了智能张拉... 详细信息

城市桥梁工程施工受场地条件、周边环境的影响较大,应该根据实际施工需求,不断丰富施工方法,创新施工工艺,运用先进机械设备,提高施工自动化、智能化水平。文章研究了城市桥梁智能施工与施工过程监控的创新技术探索,首先分析了智能张拉技术、智能压浆技术、智能养护技术、智能检测技术、智能定位技术的应用要点,然后从维护整体施工目标的角度出发,强调了智能技术在施工质量、进度、安全、成本管理方面的应用,打破了传统施工过程监督控制模式,有利于加快桥梁工程行业的改革创新步伐。

关键词：桥梁工程智能施工过程监控技术创新

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World Journal of Clinical Cases 2020年第20期8卷 4807-4815页

作者： Ci Tian Yang Lv Shu Li Dai-Dai Wang yi bai Fang Zhou Qing-Bian Ma Department of Emergency Medicine Peking University Third HospitalBeijing 100191China Department of Orthopedics Peking University Third HospitalBeijing 100191China

BACKGROUND Acute traumatic spinal cord injury(ATSCI)usually results in disability,yet data on contemporary national trends of ATSCI incidence are limited.AIM To provide a systematic and basic theoretical basis for improving the treatment of acute spinal cord injury.METHODS Data from the Peking University Third Hospital Inpatient Sample databases were analyzed.A total of 304 patients with ATSCI were included from 2012 to 2017.The epidemiological data,treatment,complications and clinical outcomes of these patients were reviewed.RESULTS Of the 304 patients,257(84.5%)were male,and 75%of the patients were 55 years old or younger.135 patients had improved follow-up American Spinal Injury Association(ASIA)grades(44.4%).Only 14 patients with ASIA grade A improved.A statistically significant difference in prognosis between patients who underwent surgery within 72 h and those who underwent surgery after 72 h was observed(P<0.05).Surgery within 72 h resulted in better prognosis.The Steroid group and the Non-Steroid group showed a significant difference in outcome among patients with ASIA grades A and B(P<0.05).Patients with pneumonia had a poorer prognosis than patients without pneumonia(P<0.05).Surgery within 72 h resulted in better prognosis.CONCLUSION This study found that there was no significant difference in hospitalization time and prognosis between the Steroid group and the Non-Steroid group,but the patients with severe spinal cord injury(ASIA grades A and B)who underwent surgery combined with steroid therapy had a better prognosis than those who underwent surgery alone.The disastrous consequences of ATSCI and lack of consensus on the management strategy are obvious.Further improvements in treatment planns are needed in order to obtain more reliable functional outcomes.

关键词： Acute spinal cord injury Trauma Surgery American Spinal Injury Association Steroids Prognosis

“译何”与“何译”:游客导向的博物馆翻译研究初探

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山西青年职业学院学报 2024年第1期37卷 91-94页

作者：白一博北京外国语大学英语学院北京100089

博物馆翻译是推动旅游产业发展和展示我国优秀传统文化的重要一环。因此,学界亟须回答博物馆翻译“译什么”以及“怎么译”的问题。通过梳理国内外相关文献发现,博物馆文本应遵循宏观和微观翻译策略。其中,主题型博物馆需要侧重宏观性,... 详细信息

博物馆翻译是推动旅游产业发展和展示我国优秀传统文化的重要一环。因此,学界亟须回答博物馆翻译“译什么”以及“怎么译”的问题。通过梳理国内外相关文献发现,博物馆文本应遵循宏观和微观翻译策略。其中,主题型博物馆需要侧重宏观性,综合考虑各种类型的博物馆文本,在译入语环境中重塑其主题。综合型博物馆则更需要注重微观翻译策略,分析语言差异,利用有限的文本提升游客的参观体验。

关键词：博物馆文本翻译对象翻译策略生态翻译学

Albumin-to-alkaline phosphatase ratio: A novel prognostic index of overall survival in cholangiocarcinoma patients after surgery

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World Journal of Gastrointestinal Oncology 2019年第1期11卷 39-47页

作者： Jian-Ping Xiong Jun-Yu Long Wei-Yu Xu Jin Bian Han-Chun Huang yi bai yi-Yao Xu Hai-Tao Zhao Xin Lu Department of Liver Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical College

AIM To clarify the prognostic significance of preoperative albumin-to-alkaline phosphatase ratio(AAPR) in cholangiocarcinoma(CCA) subjects receiving surgery.METHODS In this retrospective study, we included 303 CCA patients receiving surgery without preoperative therapy between 2002 and 2014. Clinicopathological characteristics(including AAPR) were analyzed to determine predictors of postoperative overall survival and recurrence-free survival(RFS). In addition,univariate and multivariate Cox proportional hazards models were conducted,followed by application of time-dependent receiver operating curves to identify the optimal cut-off.RESULTS Univariate and multivariate analyses revealed both decreased overall survival[hazard ratio(HR): 2.88, 95%CI: 1.19-5.78] and recurrence-free survival(HR: 2.31,95%CI: 1.40–3.29) in patients with AAPR < 0.41 compared to those with AAPR ≥0.41. The optimal cut-off of AAPR was 0.41. Of the 303 subjects, 253(83.5%) had an AAPR over 0.41. The overall 1-, 3- and 5-year survival rates were 70.2%, 38.0% and 16.5%, respectively in the low(< 0.41) AAPR group, which were significantly lower than those in the high(≥ 0.41) AAPR group(81.7%, 53.9%, and 33.4%,respectively)(P < 0.0001). Large tumor size, multiple tumors, and advanced clinical stage were also identified as significant predictors of poor prognosis.CONCLUSION Our outcomes showed that AAPR was a potential valuable prognostic indicator in CCA patients undergoing surgery, which should be further confirmed by prospective studies. Moreover, it is necessary to investigate the mechanisms concerning the correlation of low AAPR with poor post-operative survival in CCA patients.

关键词： Albumin-to-alkaline phosphatase ratio Cholangiocarcinoma Prognosis Surgery Survival

Angiotensin converting enzymes inhibitors or angiotensin receptor blockers should be continued in COVID-19 patients with hypertension

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World Journal of Clinical Cases 2021年第1期9卷 47-60页

作者： Ci Tian Nan Li yi bai Han Xiao Shu Li Qing-Gang Ge Ning Shen Qing-Bian Ma Department of Emergency Medicine Peking University Third HospitalBeijing 100191China Research Center of Clinical Epidemiology Peking University Third HospitalBeijing 100191China Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalBeijing 100191China Department of Critical Care Medicine Peking University Third HospitalBeijing 100191China Department of Pulmonary and Critical Care Medicine Department of MedicinePeking University Third HospitalBeijing 100191China

BACKGROUND Recent studies have revealed that sustained ingestion of angiotensin converting enzymes inhibitors or angiotensin receptor blockers(ACEIs/ARBs)had no harmful effects on coronavirus disease 2019(COVID-19)patients complicated with hypertension.AIM To investigate the impact on COVID-19 patients complicated with hypertension who discontinued using ACEIs/ARBs.METHODS All COVID-19 patients complicated with hypertension admitted to our isolated unit were consecutively recruited in this study.Some patients switched from ACEIs/ARBs to calcium channel blocker(CCBs)after admission,while others continued using non-ACEIs/ARBs.We compared characteristics and clinical outcomes between these two groups of patients.RESULTS A total of 53 patients were enrolled,27 patients switched from ACEIs/ARBs to CCBs while 26 patients continued with non-ACEIs/ARBs.After controlling potential confounding factors using the Cox proportional hazards model,hospital stay was longer in patients who discontinued ACEIs/ARBs,with a hazard ratio of 0.424(95%confidence interval:0.187-0.962;P=0.040),upon discharge than patients using other anti-hypertensive drugs.A sub-group analysis showed that the effect of discontinuing use of ACEIs/ARBs was stronger in moderate cases[hazard ratio=0.224(95%confidence interval:0.005-0.998;P=0.0497)].CONCLUSION Patients in the discontinued ACEIs/ARBs group had longer hospital stays.Our findings suggest that COVID-19 patients complicated with hypertension should continue to use ACEIs/ARBs.

关键词： COVID-19 Hypertension Angiotensin converting enzymes inhibitors Angiotensin receptor blockers Angiotensin-converting enzyme-2 Prognosis

立体影像采集失真对视觉诱导晕动症的影响研究

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激光与光电子学进展 2024年第4期61卷 103-110页

作者：柏溢夏振平张博文彭子雄张元申苏州科技大学电子与信息工程学院江苏苏州215009

视觉诱导晕动症是虚拟现实技术应用中较为严重的问题,沉浸在虚拟现实环境中的使用者普遍会存在头晕、恶心等症状。立体影像采集失真导致人眼感知的虚拟空间畸变,可能是诱发和增强视觉诱导晕动症的重要因素之一。为了研究立体影像采集失... 详细信息

视觉诱导晕动症是虚拟现实技术应用中较为严重的问题,沉浸在虚拟现实环境中的使用者普遍会存在头晕、恶心等症状。立体影像采集失真导致人眼感知的虚拟空间畸变,可能是诱发和增强视觉诱导晕动症的重要因素之一。为了研究立体影像采集失真对视觉诱导晕动症的影响,基于立体影像采集理论构建了虚拟空间畸变模型,针对具有三种焦距参数的镜头获取不同等级的立体空间畸变影像。通过视觉感知实验,对不同空间畸变下的视觉诱导晕动症进行主观和客观的评价。结果表明,当立体影像采集的相机视场角与人眼视场角不匹配时,立体影像失真对视觉诱导晕动症有显著性影响,立体影像采集失真会导致更为强烈的视觉诱导晕动症状。首次用系统性实验的方法验证采集参数与感知参数不匹配导致的虚拟空间畸变增强了视觉诱导晕动症的结论,研究结果对提出切实可行的缓解方法有重要意义。

关键词：视觉感知虚拟现实视觉诱导晕动症立体影像采集立体影像失真

思政课教师教学创新能力发展的现实困境与三维路径

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湖北开放职业学院学报 2024年第4期37卷 6-7,13页

作者：白弋枫云南旅游职业学院云南昆明650221

思政课教师的教学创新能力是推动高校思政课高质量发展的重要推手。当前思政课教师教学创新面临课程特点、学校制度、复杂学情和个人水平四重困境。在明确思政课教师教学创新能力内涵及意义的基础上,文章从营造创新氛围,激发创新意愿;... 详细信息

思政课教师的教学创新能力是推动高校思政课高质量发展的重要推手。当前思政课教师教学创新面临课程特点、学校制度、复杂学情和个人水平四重困境。在明确思政课教师教学创新能力内涵及意义的基础上,文章从营造创新氛围,激发创新意愿;用好资源平台,铸牢创新基础;多方共同发力,推动创新实践三个方面提出思政课教师教学创新能力发展的意愿、准备和实践的三维路径。

关键词：思政课教师教学创新路径