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Production of dissolved organic carbon in the South China Sea:A modeling study

Science China Earth Sciences 2022年第2期65卷 351-364页

作者： Wentao MA Peng XIU Yi YU yiling zheng Fei CHAI State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China School of Marine Sciences University of MaineOrono 04469MaineUSA

The South China Sea(SCS)is the largest semi-enclosed marginal sea in the western Pacific.The alternation of East Asian monsoon causes a significant seasonal pattern of chlorophyll,primary productivity,and export flux of sinking particles.However,the source and sink of dissolved organic carbon(DOC)pools with different bioavailability are less studied.Here we evaluated the seasonal production of DOC in labile,semi-labile and refractory forms using a coupled physical-biogeochemical model.This study aims to understand the dynamics and budgets of organic matters in the SCS.Model results show that the production of labile,semi-labile and refractory DOC is highly correlated with the net primary productivity(NPP)which is higher in winter and lower in summer,reflecting a dependence of DOC on the NPP.The seasonal variation in Pearl River discharge dominates the DOC production in the northern coastal region.In the northeast,the Kuroshio intrusion associated frontal system is attributed to cause high winter production.The DOC production in the southwest is controlled by both winter mixing and summer upwelling.The production of refractory DOC with the least bioavailability favors carbon sequestration.Its annual mean production is 1.8±0.5 mg C m^(−2) d^(−1),equivalent to 26%of the export flux of particulate organic carbon at 1000 m.

关键词： Dissolved organic carbon Microbial carbon pump South China Sea Biogeochemical model ROMS CoSiNE

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The role of intraoperative electron radiotherapy in centrally located hepatocellular carcinomas treated with narrow-margin (<1 cm) hepatectomy: a prospective, phase 2 study

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Hepatobiliary Surgery and Nutrition 2022年第4期11卷 515-529,I0004页

作者： Liming Wang Yunhe Liu Weiqi Rong Fan Wu Weibo Yu Kan Liu Shengtao Lin yiling zheng Kai Zhang Tana Siqin Changcheng Tao Mei Liu Bo Chen Qinfu Feng Jianxiong Wu Department of Hepatobiliary Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Head and Neck Surgical Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Pathology and Laboratory Medicine David Geffen School of MedicineUniversity of California at Los AngelesLos AngelesCAUSA Department of Diagnostic Radiology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Surgical Oncology Fujian Provincial Hospital/Shengli Clinical Medical College of Fujian Medical UniversityFuzhouChina Laboratory of Cell and Molecular Biology&State Key Laboratory of Molecular Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Background: Postoperative radiotherapy (RT) is known to play an important role in the treatment of hepatocellular carcinomas (HCCs), but the specific role of intraoperative electron radiotherapy (IOERT) in HCCs remains unclear. The aim of this study was to investigate the safety and efficacy of IOERT in centrally located HCCs treated with narrow-margin (<1 cm) hepatectomy. Methods: This was a single-center, phase 2, prospective non-randomized controlled study, including 268 patients with centrally located HCCs who underwent narrow-margin hepatectomy. The patients were subsequently allocated to the IOERT group (n=59) or to the control group (n=65). The primary outcome of the study was to compare recurrence-free survival (RFS) between the IOERT group and the control group, and the secondary outcome was to compare overall survival (OS) rate between the two groups. Results: Of 268 patients enrolled, a total of 124 were included in the study: 59 in IOERT group, 65 in control group. The 1-, 2-, 3-year RFS rates were 79.3%, 62.1% and 45.8% for patients in the IOERT group, and 47.6%, 28.6%, and 22.9% for patients in the control group, respectively (P=0.025). The 1-, 2-, and 3-year OS rates were 100.0%, 94.9%, and 83.7% for patients in the IOERT group, and 92.3%, 87.5%, and 79.4% for patients in the control group, respectively (P=0.314). Subgroup analysis of MVI (+) patients revealed that RFS and OS are significantly prolonged in the IOERT subgroup as compared to the control, whereas there was no significant difference of RFS and OS between the two groups in MVI (−) patients. Conclusions: IOERT for centrally located HCCs with concurrent narrow-margin hepatectomy was feasible and safe. Statistically better RFS rate was observed in the IOERT group compared to the control group. Subgroup analysis revealed that IOERT was more beneficial for postoperative survival of HCC patients with MVI. Trial Registration: ChiCTR-TRC-12002802;www.***.int/ictrp.

关键词： Hepatocellular carcinoma(HCC) intraoperative electron radiotherapy(IOERT) microvascular invasion(MVI) relapse survival overall survival(OS)

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Surgical outcomes of hand-assisted laparoscopic liver resection vs. open liver resection: A retrospective propensity scorematched cohort study

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Chinese Journal of Cancer Research 2019年第5期31卷 818-824页

作者： Shengtao Lin Fan Wu Liming Wang Yunhe Liu yiling zheng Tana Siqin Weiqi Rong Jianxiong Wu Department of Hepatobiliary Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College

Objective: Hand-assisted laparoscopic liver resection has the advantages of open and laparoscopic surgeries.There is still lack of comparison of surgical outcomes between hand-assistied laparoscopic liver resection(HALLR)and open liver resection(OLR). This study compared the surgical outcomes of the two approaches between wellmatched patient cohorts.Methods: Patients who received liver resection during January 2014 and October 2017 in Cancer Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College were included in this retrospective study. Propensity score matching(PSM) was performed to reduce selection bias between the two groups. Operation and short-term surgical outcomes were compared between the well matched groups.Results: During this period, 232 patients with a median age of 55.1 years old received OLR, while 49 patients with a median age of 54.7 years old received HALLR. Compared with HALLR group, OLR group has a higher proportion in male patients(190/232, 81.9% vs. 34/49, 69.4%, P=0.048) and lower albumin(43.2±4.5 vs. 44.8±3.7,P=0.020). After PSM, 49 patients from each group were included in the following analysis. Two groups were well balanced in their baseline characteristics, liver functions, preoperative treatments, abdominal surgery history, and surgical difficulty. None perioperative mortality was observed in both groups. Operation time and postoperative complications were similar in two groups(P=0.935, P=0.056). The HALLR group showed less bleeding amount(177.8±217.1 mL vs. 283.1±225.0 mL, P=0.003) and shorter postoperative stay period(6.9±2.2 d vs. 9.0±3.5 d,P=0.001).Conclusions: We demonstrated that hand-assisted laparoscopic surgery is feasible and safe for liver resection,including some difficult cases. HALLR can provide better bleeding control and faster recovery after surgery.

关键词： Surgical outcomes hand-assisted laparoscopic surgery liver resection

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生物质炭-沼液配施条件下旱地红壤碳氮循环功能基因丰度主控因子与耦合关系

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农业资源与环境学报 2024年第4期41卷 835-845页

作者：郑一玲范栩妙钟哲伦姚光伟林晨顾佳艳靳泽文平立凤单胜道浙江科技大学环境与资源学院杭州310023 浙江省废弃生物质循环利用与生态处理重点实验室杭州310023 开化县新农村建设中心浙江开化324300

为研究生物质炭-沼液配施条件下碳氮生物地球化学循环特征,本研究以典型旱地红壤为对象,按0%和2%生物质炭添加量(C0和C1)与0%和100%沼液替代比例(B0和B1)配施,探究配施条件下4年间土壤基本理化性质、碳-氮循环功能基因丰度变化特征及其... 详细信息

为研究生物质炭-沼液配施条件下碳氮生物地球化学循环特征,本研究以典型旱地红壤为对象,按0%和2%生物质炭添加量(C0和C1)与0%和100%沼液替代比例(B0和B1)配施,探究配施条件下4年间土壤基本理化性质、碳-氮循环功能基因丰度变化特征及其相互耦合关系。结果显示:与空白处理(CK)相比,生物质炭与沼液的联合施用处理(C1B1)土壤pH提升了1.92个单位,容重降低了19.2%,全氮含量则提高了268.6%。多元非线性回归模型显示,铵态氮(NH+4-N)、硝态氮(NO-3-N)和水溶性有机碳(WSOC)是影响碳氮循环功能基因丰度的主要因子。相关性热图则表明反硝化功能基因(narG、nirK、nirS和nosZ)与碳降解(chiA、pgu、naglu和gcd)、碳固定(rbcL、frdA、pccA和mct)、甲烷代谢功能基因(mxaF和pmoA)呈正相关关系。研究表明,生物质炭与沼液配施显著提升土壤质量,并通过影响土壤碳氮形态和含量改变碳氮循环功能基因丰度,最终调控土壤碳氮循环过程。

关键词：生物质炭沼液旱地红壤碳氮循环功能基因

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对比分析CT与MRI检查诊断急性颅脑损伤的效果研究

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中国医药指南 2024年第5期22卷 68-70页

作者：邓娜彭伟生王成立郑玉凤刘娜红王怡诗郑一玲黄莹中国人民解放军联勤保障部队第九一〇医院医学影像科泉州362000

目的对比分析CT与MRI检查诊断急性颅脑损伤的效果研究。方法将2021年1月至2022年12月在我院治疗的125例疑似急性颅脑损伤患者作为研究对象,均采用CT与MRI检查,以临床诊断结果作为金标准,对比两组的不同部位急性颅脑损伤检出率、与临床... 详细信息

目的对比分析CT与MRI检查诊断急性颅脑损伤的效果研究。方法将2021年1月至2022年12月在我院治疗的125例疑似急性颅脑损伤患者作为研究对象,均采用CT与MRI检查,以临床诊断结果作为金标准,对比两组的不同部位急性颅脑损伤检出率、与临床诊断结果的对照、诊断效能。结果MRI检查在脑叶挫裂伤、硬膜外血肿、硬膜下血肿、蛛网膜下腔出血、脑深部挫伤、颅骨骨折等急性颅脑损伤总检出率高于CT检查(P<0.05);MRI检查对急性颅脑损伤诊断的敏感度、特异度、准确度、阳性预测值、阴性预测值均高于CT检查(均P<0.05)。结论MRI检查诊断急性颅脑损伤的效果更好,能有效明显急性颅脑损伤类型,提高诊断的敏感度、特异度及准确度,为临床快速诊治提供了可靠依据。

关键词：急性颅脑损伤 CT MRI 诊断效能

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基于纤维素膜/PEDOT:PSS的电致变色器件及其性能研究

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中国造纸 2023年第4期42卷 34-40页

作者：孙冯伟江佳骏郑亦玲李建国福建农林大学材料工程学院福建福州350108 植物纤维功能材料国家林业和草原局重点实验室福建福州350108

基于纤维素开发了一种环保的高性能电致变色器件(ECD)。通过在纤维素膜表面旋涂聚(3,4-亚乙二氧基噻吩)-聚(苯乙烯磺酸)(PEDOT:PSS),获得纤维素膜/PEDOT:PSS透明导电基底,并与电解质复合构建ECD。随着纤维素膜表面PEDOT:PSS旋涂层数的增... 详细信息

基于纤维素开发了一种环保的高性能电致变色器件(ECD)。通过在纤维素膜表面旋涂聚(3,4-亚乙二氧基噻吩)-聚(苯乙烯磺酸)(PEDOT:PSS),获得纤维素膜/PEDOT:PSS透明导电基底,并与电解质复合构建ECD。随着纤维素膜表面PEDOT:PSS旋涂层数的增加,纤维素膜/PEDOT:PSS透明导电基底的导电率呈增加趋势,透光率呈降低趋势,旋涂3层PEDOT:PSS的纤维素膜/PEDOT:PSS透明导电基底具有77%的透光率和465Ω/sq的电阻。通过施加3 V的正向电压,制备的ECD的透光率可在10 s内从77%下降至53%,且施加3 V的负向偏压,其透光率可以快速恢复。此外,制备的ECD电致变色能力在循环100次后仍然保持较为稳定的状态。

关键词：电致变色器件纤维素膜 PEDOT:PSS 透明导电基底

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改革开放前我国劳动就业思想的社会学考量

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中国社会经济史研究 2005年第3期 102-104页

作者：郑以灵厦门大学公共事务学院福建厦门361005

改革开放前我国的社会就业观有其鲜明的时代性。在解决劳动就业问题上,我国基本上是将其纳入政治轨道上运作,其主导思想是面向农业、面向农村。其职业角色期望表现出松散、模糊和人格化倾向,社会期望使知识青年无法认同自己的职业角色... 详细信息

改革开放前我国的社会就业观有其鲜明的时代性。在解决劳动就业问题上,我国基本上是将其纳入政治轨道上运作,其主导思想是面向农业、面向农村。其职业角色期望表现出松散、模糊和人格化倾向,社会期望使知识青年无法认同自己的职业角色。将大批城市人口转移到农村,通过人口转移方式来解决城市青年的就业问题,显然削弱了城市的中心地位。

关键词：劳动就业人口转移职业角色劳动就业问题改革开放前社会学就业思想考量城市青年面向农村人口转移职业角色

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基于三维质量结构的卒中护理质量评价体系在脑卒中患者中的应用

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齐鲁护理杂志 2022年第17期28卷 9-12页

作者：郑艺灵冯海珊朱仁敬厦门大学附属中山医院福建厦门361004

目的:探讨基于三维质量结构的卒中护理质量评价体系在脑卒中患者中的应用效果。方法:选取2019年1月1日~2020年12月31日收治的103例脑卒中患者作为研究对象,根据入院时间将其分为两组,对照组进行常规护理,观察组基于“结构-过程-结果”... 详细信息

目的:探讨基于三维质量结构的卒中护理质量评价体系在脑卒中患者中的应用效果。方法:选取2019年1月1日~2020年12月31日收治的103例脑卒中患者作为研究对象,根据入院时间将其分为两组,对照组进行常规护理,观察组基于“结构-过程-结果”三维质量结构模式,通过文献检索、半结构式访谈、德尔菲专家函询构建卒中护理质量评价体系,并据此实施护理干预;比较两轮函询专家积极程度、权威程度、意见协调程度及两组生活质量[采用脑卒中专用生活质量量表(SS-QOL)]。结果:第1、2轮函询问卷回收率分别为100.00%、94.44%,意见提出率分别为55.56%、17.65%,专家权威系数(Cr)分别为0.872、0.882;第1、2轮函询指标变异系数(Cv)分别为9.65%、9.10%,肯德尔和谐系数(Kendall's W)分别为0.247、0.285分(P<0.001);构建体系包括3个一级指标、12个二级指标及35个三级指标;观察组SS-QOL评分高于对照组(P<0.01)。结论:卒中护理质量评价体系科学性、可靠性较高,可为脑卒中护理质量监测和质量持续改进提供评价参考,对提高脑卒中患者生活质量具有重要意义。

关键词：脑卒中护理质量评价体系三维质量结构生活质量

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基于ROC曲线的山区沟道提取最佳汇流量阈值分析

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干旱区资源与环境 2023年第10期37卷 93-101页

作者：杨绮梦頔张春平常耀文吴镇宇刘霞陆威郑伊铃南京林业大学林学院江苏省水土保持与生态修复重点实验室南方现代林业协同创新中心南京210037 淮河水利委员会淮河流域水土保持监测中心站蚌埠233001 珠江水利委员会珠江流域水土保持监测中心站广州510000

沟道是影响坡面单元提取及水土保持图斑构建的重要基础,确定最佳汇流量阈值是提取流域沟道的关键。文中以大别山区金寨县铁冲乡小流域为研究区,结合野外调查,采用ROC曲线法定量确定大别山区小流域沟道提取的最佳汇流量阈值,并将该方法... 详细信息

沟道是影响坡面单元提取及水土保持图斑构建的重要基础,确定最佳汇流量阈值是提取流域沟道的关键。文中以大别山区金寨县铁冲乡小流域为研究区,结合野外调查,采用ROC曲线法定量确定大别山区小流域沟道提取的最佳汇流量阈值,并将该方法提取的结果与实际沟道网络进行精度评价。研究结果表明:1)采用不同汇流量阈值对沟道提取特征有明显影响,随着汇流量阈值的增加,沟道等级减少,沟道密度与数量呈指数趋势减少。2)不同地貌类型的沟道起点汇流量阈值有一定差异,低丘陵、高丘陵、低山分别为1.57hm^(2)、2.18hm^(2)、2.30hm^(2)。利用汇流量阈值抽取一级沟道样本点,得到ROC曲线下面积AUC=0.702,约登指数最大值2.21hm^(2)为最佳汇流量阈值,最佳阈值提取的沟道RMSE为29.76m,沟道套合差1.74%,沟道提取效果理想。3)基于ROC曲线的最佳阈值提取沟道结果符合研究区地貌特征,与实际沟道网络一致,表明利用ROC曲线可定量化确定最佳汇流量阈值,在大别山区适用性良好。

关键词：山区沟道最佳汇流量阈值 ROC曲线约登指数大别山区

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中国城市高密度居住环境对居民脑卒中的影响——对武汉的实证

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China City Planning Review 2022年第3期31卷 15-25页

作者：谢波郑依玲李志刚 An Zihao Li Min(Translated) Liang Sisi(Proofread) School of Urban Design Wuhan UniversityWuhanP.R.China Faculty of Architecture The University of Hong KongHong KongP.R.China the School of Urban Design Wuhan University Urban Planning Society of China the Urban Geography Com-mittee of The Geographical Society of China WuhanP.R.China University of Leeds Leedsthe UK 不详

This paper explores the association between high-density urban built environments and stroke through the spatial regression model. An empirical study based on the disease data of Wuhan in 2015 shows that high-density urban built environments have a significant impact on stroke, and that the city center sees a high prevalence of stroke. Among urban built environment elements, net population density, residential land density, and building density are positively correlated with the risk of stroke, whereas the accessibility of community hospitals, parks, fast-food shops, and bus stops is negatively correlated with it. The mechanism analysis demonstrates that urban built environments have an important impact on stroke through such factors as the natural environment, physical activity, dietary habits, and social capital. Accordingly, the paper proposes that during the healthy city planning process in China, it is essential to reduce net population density and building density and relocate the older adults in city centers. In addition, measures should be taken to improve public service facilities at the block level and to control the risk of stroke in the high-density urban built environment.

关键词： urban built environments high density stroke healthy city planning Wuhan

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