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不同冬季覆盖作物对双季稻田土壤有机碳的影响

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应用生态学报 2017年第2期28卷 465-473页

作者：唐海明程凯凯肖小平汤文光汪柯李超张帆孙玉桃湖南省土壤肥料研究所长沙410125

以冬闲-双季稻种植模式为对照(CK),分析了黑麦草-双季稻(Ry)、紫云英-双季稻(Mv)、马铃薯-双季稻(Po)和油菜-双季稻(Ra)5种不同种植模式下冬季覆盖作物秸秆还田后对0~5、5~10、10~20 cm土壤有机碳、活性有机碳、碳库管理指数和有机碳储... 详细信息

以冬闲-双季稻种植模式为对照(CK),分析了黑麦草-双季稻(Ry)、紫云英-双季稻(Mv)、马铃薯-双季稻(Po)和油菜-双季稻(Ra)5种不同种植模式下冬季覆盖作物秸秆还田后对0~5、5~10、10~20 cm土壤有机碳、活性有机碳、碳库管理指数和有机碳储量的影响.结果表明:与CK处理相比,黑麦草、紫云英、马铃薯和油菜秸秆还田处理均提高了稻田0~5、5~10、10~20 cm土壤总有机碳和活性有机碳含量,其中Po处理最高.冬季覆盖作物秸秆还田均提高了稻田不同层次土壤的碳库活度、碳库活度指数、碳库指数和土壤碳库管理指数,其大小顺序均表现为Po>Mv>Ry>Ra>CK.不同冬季覆盖作物秸秆还田处理与CK处理相比均有利于提高稻田不同层次土壤有机碳储量,其中以紫云英秸秆还田的效果最好,黑麦草和马铃薯次之;各处理稻田土壤有机碳储量均随土壤深度的增加而递增.

关键词：冬季覆盖作物总有机碳活性有机碳土壤碳库管理指数有机碳储量

Contributions from light level and spectral content on refractive development in young rabbits

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International Journal of Ophthalmology(English edition) 2025年第3期18卷 390-397页

作者： Xiu-ping tang Zhi-Jin tang Hao-Bo Fan Yun-Chun Zou Department of Ophthalmology the Second Clinical College of North Sichuan Medical College(Nanchong Central Hospital)Nanchong 637000Sichuan ProvinceChina Department of Ophthalmology Suining Central HospitalSuining 629000Sichuan ProvinceChina Department of Optometry North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina

AIM:To compare the effects of manipulating light levels versus manipulating the spectral content of short wavelengths(blue light)of ambient lighting on refractive development in young ***:A total of 32 healthy 3-week-old rabbits were randomly assigned to one of the four groups with 8 in each group for 12wk:Control group(NC)under low blue light(output ratio of blue light 1.8%)at low illuminance(341 lx),HI group under low blue light(output ratio of blue light 1.6%)at high illuminance(5057 lx),simulating natural light(S-NL)group under high blue light(output ratio of blue light 4.9%)at high illuminance(5052 lx),and MB group under high blue light(output ratio of blue light 5.2%)at low illuminance(342 lx).The lighting in each group were provided by light emitting diode(LED)lamps emitting visible light(range 380-780 nm)in addition to(or not)LED lamps only emitting short wavelength(range 380-500 nm).Refraction,axial length,and corneal curvature radius were assessed by retinoscopy,ultrasonography and keratometry,*** data of both eyes for each animal were used as single values and compared among ***:During the 12-week intervention,all animals had an emmetropization *** decrease of refraction in rabbits in HI group was similar to S-NL group,both slower than that of NC group(P0.05).CONCLUSION:The light levels per se but not the rich in spectral content of short wav

关键词： emmetropization myopia refractive error illuminance short wavelengths

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水稻精细胞的超微结构

四川大学学报（自然科学版） 2001年第3期38卷 434-439页

作者：苟小平唐琳颜钫陈放四川大学生命科学学院成都610064

在稻成熟花粉粒中 ,精细胞被不连续的电子透明的周质空间所包围 .纵切面上显示的精细胞具显著的由细胞质延伸形成的尾状结构 ,主要为长圆形的细胞核所占据的一端为头部 .精细胞中具一般的细胞器 ,其中线粒体主要位于头部、微丝成束与细... 详细信息

在稻成熟花粉粒中 ,精细胞被不连续的电子透明的周质空间所包围 .纵切面上显示的精细胞具显著的由细胞质延伸形成的尾状结构 ,主要为长圆形的细胞核所占据的一端为头部 .精细胞中具一般的细胞器 ,其中线粒体主要位于头部、微丝成束与细胞纵轴平行排列 .观察表明 ,在水稻成熟花粉中具有雄性生殖单位 ,两个精细胞以尾部紧密连接。

关键词： Q248精细胞雄性生殖单位超微结构花粉水稻

Insights from untargeted metabolomics: revealing potential marker compounds into the maturation of fermented chili

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Food Science and Human Wellness 2025年

作者： Shiyu Liu Mingyuan Yang Jianhua Zhao Meijuan Lei Jinlin Han Min Xu ping Liu Jie tang Hongbin Lin School of Food and Bio-engineering， Xihua University China Agricultural University-Sichuan Advanced Agricultural & Industrial Institute Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing Food Microbiology Key Laboratory of Sichuan Province

Chili fermentation is one of the most important processes in the production of Pixian Douban (PXDB)， which determines the flavor and product quality of PXDB. However， the maturity of fermented chili mainly depends on empirical judgment， which can not satisfy the need for standardized production of PXDB. Therefore， this study aimed to investigate volatile and non-volatile substances during the maturation process and to find markers related to the maturity of fermented chili. GC×GC-MS combined with multivariate statistical analysis revealed that 2-methoxy-3-isobutyl pyrazine， linalool， 3-(methylthio)propionaldehyde， myrcene， and decanal (ROAV ≥ 1， VIP > 1， P < 0.05) were regarded as potentially active aromatic markers for differentiating fermentation time. Additionally， UPLC-QTOF-MS combined with multivariate statistical analysis resulted that 14 compounds can serve as differentiated non-volatile compounds. The correlation of maturity-related physico-chemical indicators with volatile and non-volatile compounds revealed that three volatile compounds (2-methoxy-3-isobutylpyrazine， linalool， and decanal) along with fructose and adenosine could serve as markers for evaluating the maturity of chili. This study is expected to establish a standard for the determination of maturity the fermented chili and lay the foundation for intelligent production of PXDB.

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黄芩素联合U0126诱导人乳腺癌细胞株MCF-7凋亡的分子机制研究

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中国现代医学杂志 2017年第10期27卷 6-13页

作者：安宏元向川南喻小兰唐利李燕唐小平张宇骄夏纪毅四川省泸州市人民医院乳腺外科四川泸州646000 西南医科大学附属中医医院妇产科四川泸州646000 西南医科大学附属医院医学实验中心四川泸州646000 西南医科大学附属医院妇产科四川泸州646000 西南医科大学医学信息与工程学院四川泸州646000

目的探讨黄芩素和U0126诱导人乳腺癌细胞株MCF-7凋亡的分子机制。方法单独及联合使用20μmol黄芩素、10μmol U0126处理MCF-7细胞24 h;光学显微镜观察细胞数量变化,流式细胞术检测MCF-7细胞周期变化,CCK8法检测细胞增殖变化,TUNEL法和... 详细信息

目的探讨黄芩素和U0126诱导人乳腺癌细胞株MCF-7凋亡的分子机制。方法单独及联合使用20μmol黄芩素、10μmol U0126处理MCF-7细胞24 h;光学显微镜观察细胞数量变化,流式细胞术检测MCF-7细胞周期变化,CCK8法检测细胞增殖变化,TUNEL法和流式细胞术检测细胞凋亡,实时聚合酶链反应(Real Time PCR)和Western blot检测凋亡相关因子m RNA和蛋白的表达水平。结果与黄芩素单独刺激MCF-7细胞相比,黄芩素联合U0126刺激MCF-7细胞时,S期细胞比例降低更明显;MCF-7细胞经不同浓度黄芩素或U0126处理后,增殖抑制,且具有浓度依赖性(P<0.05);与黄芩素单独处理MCF-7细胞相比,黄芩素与U0126联合处理时,细胞凋亡更加显著(P<0.05),早期凋亡和晚期凋亡均增多(P<0.05);与黄芩素或U0126单独处理MCF-7细胞相比,黄芩素和U0126联合处理MCF-7细胞时,凋亡抑制因子Bcl-2的m RNA水平降低(P<0.05),凋亡促进因子Bax的m RNA水平增高(P<0.05),ERK1/2、GSK-3β和P38的磷酸化水平降低(P<0.05),凋亡促进因子Bax表达量增高(P<0.05),凋亡抑制因子Bcl-2表达量降低(P<0.05)。结论黄芩素或U0126通过调控Bcl-2/Bax的表达水平以及ERK1/2、GSK-3β和P38的磷酸化水平抑制MCF-7细胞增殖,促进细胞凋亡,且具有协同效应。因此,黄芩素和U0126可联合用于临床治疗乳腺癌,具有重要临床意义。

关键词：黄芩素 U0126 人乳腺癌细胞株MCF-7 凋亡分子机制

Molecular fluorination strategy for regulating NIR AIEgens to boost phototheranostics of nasopharyngeal carcinoma

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Science China Chemistry 2025年

作者： ping Zheng Yuxun Ding Alim Abdurahman Jun Zhu Leyuan Tian Yi Liu Qian Liu Lei Wang Dong Wang Ben Zhong tang Center for Aggregation-Induced Emission (AIE) Research Guangdong Provincial Key Laboratory of New Energy Materials Service SafetyCollege of Materials Science and Engineering Shenzhen University College of Physics and Optoelectronic Engineering Shenzhen University State Key Laboratory of Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Department of Urology Tianjin First Central Hospital School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong

Light-driven theranostics, so-called phototheranostics, represents one of the most momentous advances for cancer treatment, of particular interest is fluorescence imaging（FLI）-navigated photodynamic therapy（PDT）. Development of prominent phototheranostic agent synchronously sharing high reactive oxygen species（ROS） production and conspicuous absorption/emission performance in terms of wavelength and intensity, still remains an appealing yet significantly challenging task. Herein, a molecular fluorination strategy was tactfully exploited to subtly regulate aggregation-induced emission（AIE）-featured photosensitizers, and the optimized agent FPIBT was obtained. The integration of beneficial fluorine results in extended emission wavelength tailing in the second near-infrared region and enhanced molar extinction coefficient, and promotes the intersystem crossing process by reducing energy gap between the S1and T_nand increasing spin-orbit coupling constant, thus significantly improves ROS production capacity. By employing FPIBT nanoparticles, the unprecedented performance on NIR-II FLI-guided PDT towards nasopharyngeal carcinoma in mouse model is witnessed by the precise tumor diagnosis and efficient tumor elimination outcomes.

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Generation of 10 kT axial magnetic fields using multiple conventional laser beams:A sensitivity study for kJ PW-class laser facilities

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Matter and Radiation at Extremes 2025年第1期10卷 15-32页

作者： Jue Xuan Hao Xiang tang Alexey Arefiev Robert J.Kingham ping Zhu Yin Shi Jian Zheng Department of Plasma Physics and Fusion Engineering University of Science and Technology of ChinaHefei 230026China Department of Mechanical and Aerospace Engineering University of California at San DiegoLa JollaCalifornia 92093USA Blackett Laboratory Imperial College LondonLondon SW72AZUnited Kingdom National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Collaborative Innovation Center of IFSA(CICIFSA) Shanghai Jiao Tong UniversityShanghai 200240China

Strong multi-kilotesla magnetic fields have various applications in high-energy density science and laboratory astrophysics,but they are not readily *** our previous work[*** et al.,***.130,155101(2023)],we developed a novel approach for generating such fields using multiple conventional laser beams with a twist in the pointing *** method is particularly well-suited for multi-kilojoule petawatt-class laser systems like SG-II UP,which are designed with multiple linearly polarized *** three-dimensional kinetic particle-in-cell simulations,we examine critical factors for a proof-of-principle experiment,such as laser polarization,relative pulse delay,phase offset,pointing stability,and target configuration,and their impact on magnetic field *** general conclusion is that the approach is very robust and can be realized under a wide range of laser parameters and plasma *** also provide an in-depth analysis of the axial magnetic field configuration,azimuthal electron current,and electron and ion orbital angular momentum *** by a simple model,our analysis shows that the axial magnetic field decays owing to the expansion of hot electrons.

关键词： polarization magnetic axial

Machine learning model-based prediction of postpancreatectomy acute pancreatitis following pancreaticoduodenectomy:A retrospective cohort study

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World Journal of Gastroenterology 2025年第8期31卷 9-23页

作者： Ji-Ming Ma Peng-Fei Wang Liu-Qing Yang Jun-Kai Wang Jian-ping Song Yu-Mei Li Yan Wen Bing-Jun tang Xue-Dong Wang Hepatopancreatobiliary Center Beijing Tsinghua Changgung HospitalBeijing 102218China Department of Information Administration Beijing Tsinghua Changgung HospitalBeijing 102218China Department of Radiology Beijing Tsinghua Changgung HospitalBeijing 102218China Organ Transplantation Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012Shandong ProvinceChina Department of Otorhinolaryngology Xiangyang No.1 People’s HospitalXiangyang 441000Hubei ProvinceChina

BACKGROUND The International Study Group of Pancreatic Surgery has established the defi-nition and grading system for postpancreatectomy acute pancreatitis(PPAP).There are no established machine learning models for predicting PPAP following pancreaticoduodenectomy(PD).AIM To explore the predictive model of PPAP,and test its predictive efficacy to guide the clinical *** Clinical data from consecutive patients who underwent PD between 2016 and 2024 were retrospectively *** analysis of PPAP risk factors was performed,various machine learning algorithms[logistic regression,random forest,gradient boosting decision tree,extreme gradient boosting,light gradient boosting machine,and category boosting(CatBoost)]were utilized to develop predictive *** feature elimination was employed to select several variables to achieve the optimal machine *** The study included 381 patients,of whom 88(23.09%)developed *** patients exhibited a significantly higher incidence of postoperative pancreatic fistula(55.68%vs 14.68%,P<0.001),grade C postoperative pancreatic fistula(9.09%vs 1.37%,P=0.001).The CatBoost algorithm outperformed other algorithms with a mean area under the receiver operating characteristic curve of 0.859[95%confidence interval(CI):0.814-0.905]in the training cohort and 0.822(95%CI:0.717-0.927)in the testing *** to shapley additive explanations analysis,pancreatic texture,main pancreatic duct diameter,body mass index,estimated blood loss,and surgery time were the most important variables based on recursive feature *** CatBoost algorithm based on selected variables demonstrated superior performance,with an area under the receiver operating characteristic curve of 0.837(95%CI:0.788-0.886)in the training cohort and 0.812(95%CI:0.697-0.927)in the testing *** We developed the first machine learning-based predictive model for PPAP following *** predictive model can assist surgeons in an

关键词： Pancreaticoduodenectomy Postoperative complication Acute pancreatitis Machine learning Predictive value

瑞美隆与多虑平治疗脑卒中后抑郁的疗效与安全性的比较研究

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实用预防医学 2008年第5期15卷 1533-1535页

作者：唐韬杜小平汤清明杨期东中南大学湘雅医院湖南长沙410008 益阳市第二人民医院

目的比较瑞美隆(米氮平)与多虑平治疗脑卒中后抑郁的疗效和安全性。方法140例伴有抑郁的急性脑卒中患者被分为瑞美隆、多虑平和对照组,分别在治疗前及治疗后第2、4、8周行HAMD、CSS、Barthel指数评分,并观察不良反应。结果瑞美隆和多虑... 详细信息

目的比较瑞美隆(米氮平)与多虑平治疗脑卒中后抑郁的疗效和安全性。方法140例伴有抑郁的急性脑卒中患者被分为瑞美隆、多虑平和对照组,分别在治疗前及治疗后第2、4、8周行HAMD、CSS、Barthel指数评分,并观察不良反应。结果瑞美隆和多虑平组在治疗后评分HAMD、CSS显著下降(P0.05);两研究组之间比较变化无显著性(P>0.05)。多虑平组口干、便秘、尿潴留等副作用显著高于瑞美隆组(P<0.05)。结论瑞美隆和多虑平都能改善脑卒中后抑郁,但瑞美隆不良反应少,提示瑞美隆更适用于脑卒中后抑郁患者的治疗。

关键词：脑卒中后抑郁瑞美隆多虑平疗效不良反应