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Salidroside Ameliorates Lung Injury Induced by PM_(2.5) by Regulating SIRT1-PGC-1αin Mice

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Biomedical and Environmental Sciences 2024年第4期37卷 367-376页

作者： LI Xiao Hong LIU Yu Mei shan Hui TAN Jin Feng ZHOU Jian song Yuan Jin LI Si Qi LIU Chen XU Dong Qun YU Li LI Wan Wei School of Public Health Shandong Second Medical UniversityWeifang 261053ShandongChina Key Laboratory of Health Inspection and Quarantine Weifang 261053ShandongChina Weifang Environmental Monitoring Station Weifang 261042ShandongChina Department of Orthopedics The 80th Army Hospital of PLAWeifang 261000ShandongChina Environment and Health Related Product Safety Institute of Chinese Center for Disease Control and Prevention Beijing 100021China School of Basic Medicine Shandong Second Medical UniversityWeifang 261053ShandongChina

Objective This study aimed to clarify the intervention effect of salidroside(SAL)on lung injury caused by PM_(2.5) in mice and illuminate the function of SIRT1-PGC-1ɑ*** Specific pathogen-free(SPF)grade male C57BL/6 mice were randomly assigned to the following groups:control group,SAL group,PM_(2.5) group,SAL+PM_(2.5) *** the first day,SAL was given by gavage,and on the second day,PM_(2.5) suspension was given by intratracheal *** whole experiment consist of a total of 10 cycles,lasting 20 *** the end of treatment,blood samples and lung tissues were collected and *** of pathological changes in lung tissue using inverted microscopy and transmission electron *** expression of inflammatory,antioxidants,apoptosis,and SIRT1-PGC-1ɑproteins were detected by Western *** Exposure to PM_(2.5) leads to obvious morphological and pathologica changes in the lung of ***_(2.5) caused a decline in levels of antioxidant-related enzymes and protein expressions of HO-1,Nrf2,SOD2,SIRT1 and PGC-1ɑ,and an increase in the protein expressions of IL-6,IL-1β,Bax,caspase-9 and cleaved ***,SAL reversed the aforementioned changes caused by PM_(2.5) by activating the SIRT1-PGC-1α *** SAL can activate SIRT1-PGC-1ɑ to ameliorate PM2.5-induced lung injury.

关键词： PM_(2.5) Salidroside Oxidative stress Inflammation Apoptosis SIRT1-PGC-1α

Spatial-and spin-resolution ARPES and magnetism beamline at SSRF

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Nuclear Science and Techniques 2024年第8期35卷 23-37页

作者： Fang‑Yuan Zhu Jie‑Feng Cao Xiang‑Yu Meng Jun‑Qin Li Rui Yu Ya‑Mei Wang shan Qiao Bo Zhao Ming‑Zhu Zhang Zhong‑kai Liu Mei‑Xiao Wang Yong Wang Ren‑Zhong Tai shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China shanghaiTech Laboratory for Topological Physics School of Physical Science and TechnologyShanghai Tech UniversityShanghai 201210China University of Chinese Academy of Sciences Beijing 100049China

The BL07U beamline is a new extreme ultraviolet and soft X-ray beamline housed in the shanghai Synchrotron Radiation Facility. Beamlines are used in nano-resolved angle-resolved photoemission spectroscopy(nano-ARPES), spin-resolved angle-resolved photoemission spectroscopy(spin-ARPES), X-ray magnetic circular dichroism spectroscopy, and X-ray magnetic linear dichroism spectroscopy for certain scientific research. The BL07U beamline, which is based on a pair of elliptical polarized undulators and a variable-included-angle plane-grating monochromator, delivers circularly or linear polarized X-rays within the energy range of 50–2000 eV. The beamline features two branches: One dedicated to nano-ARPES,which has a minimum spot size of only ~ 200 nm, and another branch comprising spin-ARPES, a vector magnetic field, and superconductive magnetic end-station.

关键词： Soft X-ray beamline Nano-ARPES Spin-ARPES XMCD/XMLD

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基于SEBAL模型的扎龙湿地蒸散量反演

中国农业气象 2008年第4期29卷 420-426页

作者：曾丽红宋开山张柏杜嘉中国科学院东北地理与农业生态研究所长春130012 中国科学院研究生院北京100049

以扎龙湿地为研究对象,利用SEBAL模型结合ETM+遥感影像、DEM及研究区附近12个站点的气象数据,反演得到净辐射量、土壤热通量、感热通量等地表能量通量;然后通过能量平衡方程得到潜热通量,并推算得到日蒸散量值。结合2001年的土地利用图... 详细信息

以扎龙湿地为研究对象,利用SEBAL模型结合ETM+遥感影像、DEM及研究区附近12个站点的气象数据,反演得到净辐射量、土壤热通量、感热通量等地表能量通量;然后通过能量平衡方程得到潜热通量,并推算得到日蒸散量值。结合2001年的土地利用图分析了不同土地利用类型的日蒸散量特征,发现水体、沼泽地具有较高的日蒸散量,水田、草地、林地次之,旱地、未利用地、居民点较低,符合蒸散规律,说明SEBAL模型在区域蒸散量估算方面具有较大的实用性。

关键词：蒸散量能量平衡 SEBAL模型扎龙湿地 ETM+影像

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基于反射光谱特征的土壤盐碱化评价

红外与毫米波学报 2008年第2期27卷 138-142页

作者：刘焕军张柏王宗明宋开山胡茂桂段洪涛中国科学院东北地理与农业生态研究所

以吉林省西部盐碱土及其光谱反射率为研究对象，采用一阶微分、去包络线方法建立各种土壤光谱指数，分析并确定反映盐碱化程度的最佳波段与土壤光谱指数，建立盐碱化土壤参数的高光谱定量模型用于评价土壤盐碱化程度，结果表明：盐碱土... 详细信息

以吉林省西部盐碱土及其光谱反射率为研究对象，采用一阶微分、去包络线方法建立各种土壤光谱指数，分析并确定反映盐碱化程度的最佳波段与土壤光谱指数，建立盐碱化土壤参数的高光谱定量模型用于评价土壤盐碱化程度，结果表明：盐碱土在400～2500nm的范围内主要有五个明显的吸收谷，碱斑土壤由于富含盐分在五个吸收谷范围的吸收特征均显著强于其他土壤；不同地域土壤属性间相关关系存在共性，pH值与电导率正相关，二者都与有机质负相关；微分、去包络线方法得到的光谱指数与土壤参数的相关系数显著优于反射率，去包络线方法得到的土壤光谱指数普适性更强；基于土壤光谱指数的高光谱模型可以准确预测盐碱土pH值，可以用于土壤的盐碱化程度评价。

关键词：遥感盐碱土 pH 电导率高光谱

近40年气候变化对松嫩平原玉米带单产的影响

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干旱区资源与环境 2007年第9期21卷 112-117页

作者：王宗明宋开山李晓燕张柏刘殿伟中国科学院东北地理与农业生态研究所长春130012 吉林大学地球科学学院长春130061

气候变化对农业生产的影响是全球变化研究中的焦点问题之一,松嫩平原是我国重要的农业区,研究过去的气候变化对其作物产量的影响具有重要的现实意义。本文选取松嫩平原玉米带为典型区,进行过去气候变化对作物产量影响的实证研究。借鉴... 详细信息

气候变化对农业生产的影响是全球变化研究中的焦点问题之一,松嫩平原是我国重要的农业区,研究过去的气候变化对其作物产量的影响具有重要的现实意义。本文选取松嫩平原玉米带为典型区,进行过去气候变化对作物产量影响的实证研究。借鉴相关研究成果,首先确立基准时段,进而建立气温影响系数,来表征气温对玉米单产的影响程度,从而分析过去气候变暖对松嫩平原玉米带玉米单产增加/减少的贡献率。结果表明:20世纪90年代作物生育期气温条件与以前相比已经发生了显著改变。如果以1961-1969年为基准时段,则相对于20世纪60年代、70年代和80年代,90年代的气候变暖对玉米增产的贡献率分别为3.55%、5.86%和9.48%。如果以1970-1982年为基准时段,则20世纪90年代气候变暖对玉米增产的贡献率相对于70年代和80年代分别为17.98%和26.78%。

关键词：气候变化气温影响系数玉米单产松嫩平原玉米带

近50年来松嫩平原西部土地利用变化及驱动力分析

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地理科学 2006年第3期26卷 277-283页

作者：刘殿伟宋开山王丹丹张树清中国科学院东北地理与农业生态研究所

在遥感和地理信息系统技术支持下,对松嫩平原西部土地利用方式、景观格局的动态变化进行定量研究。结果表明:过去近50年里,松嫩平原西部耕地净增加29.65×104hm2,其中草地与湿地对耕地的增加贡献最大;草地减少70.29×104hm2,除部分草地... 详细信息

在遥感和地理信息系统技术支持下,对松嫩平原西部土地利用方式、景观格局的动态变化进行定量研究。结果表明:过去近50年里,松嫩平原西部耕地净增加29.65×104hm2,其中草地与湿地对耕地的增加贡献最大;草地减少70.29×104hm2,除部分草地转化为耕地外,退化为盐碱地、沙地也是草地大量减少的一个重要原因;松嫩平原西部现有沼泽湿地面积44.88×104hm2,近50年来减少62.54%。景观破碎化严重,不同土地利用类型间频繁转化,表明各种土地景观间存在不稳定因素,自然和人为因子在景观的转化中有不可忽略的作用,但人为因子的作用更显著。

关键词：土地利用变化景观指数遥感松嫩平原西部

Computational and dark-field ghost imaging with ultraviolet light

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Photonics Research 2024年第2期12卷 226-234页

作者： JIAQI song BAOLEI LIU YAO WANG CHAOHAO CHEN XUCHEN shan XIAOLAN ZHONG LING-AN WU FAN WANG School of Physics Beihang UniversityBeijing 102206China Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems Department of Electronic Materials EngineeringResearch School of PhysicsThe Australian National UniversityCanberraACT 2600Australia Institute of Physics Chinese Academy of SciencesBeijing 100190China

Ultraviolet(UV)imaging enables a diverse array of applications,such as material composition analysis,biological fluorescence imaging,and detecting defects in semiconductor ***,scientific-grade UV cameras with high quantum efficiency are expensive and include complex thermoelectric cooling ***,we demonstrate a UV computational ghost imaging(UV-CGI)method to provide a cost-effective UV imaging and detection *** applying spatial–temporal illumination patterns and using a 325 nm laser source,a singlepixel detector is enough to reconstruct the images of *** use UV-CGI to distinguish four UV-sensitive sunscreen areas with different densities on a ***,we demonstrate dark-field UV-CGI in both transmission and reflection *** only collecting the scattered light from objects,we can detect the edges of pure phase objects and small scratches on a compact *** results showcase a feasible low-cost solution for nondestructive UV imaging and *** combining it with other imaging techniques,such as hyperspectral imaging or time-resolved imaging,a compact and versatile UV computational imaging platform may be realized for future applications.

关键词： ghost illumination versatile

Simultaneous determination of five plant hormones in cotton leaves using QuEChERS combined with HPLC‒MS/MS

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Journal of Cotton Research 2024年第2期7卷 163-176页

作者： WANG Wenhao song Xianpeng WANG Dan MA Yajie shan Yongpan REN Xiangliang HU Hongyan WU Changcai YANG Jun MA Yan National Key Laboratory of Cotton Biobreeding and Integrated Utilization Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenan 455000China College of Agriculture Hebei Agricultural UniversityBaodingHebei 071000China Zhengzhou Research Base National Key Laboratory of Cotton Biobreeding and Integrated UtilizationZhengzhou UniversityZhengzhouHenan 450001China Western Agricultural Research Center Chinese Academy of Agricultural SciencesChangjiXinjiang 831100China

Background Plant hormones profoundly influence cotton growth,development,and responses to various ***,there is a pressing need for an efficient assay to quantify these hormones in *** this groundbreaking study,we have established QuEChERS-HPLC‒MS/MS method,for the simultaneous detection of multiple plant hormones in cotton leaves,allowing the analysis and quantification of five key plant *** Sample extraction and purification employed 0.1%acetic acid in methanol and C18 for optimal recovery of plant *** method applied to cotton demonstrated excellent linearity across a concentration range of 0.05–1 mg・L−1,with linear regression coefficients exceeding *** limits of quantification(LOQs)were 20μg・kg−1 for GA3 and 5μg・kg−1 for the other four plant *** rates for the five plant hormones matrix spiked at levels of 5,10,100,and 1000μg・kg−1 were in the range of 79.07%to 98.97%,with intraday relative standard deviations(RSDs)ranging from 2.11%to 8.47%.The method was successfully employed to analyze and quantify the five analytes in cotton leaves treated with plant growth *** The study demonstrates that the method is well-suited for the determination of five plant hormones in *** exhibits excellent selectivity and sensitivity in detecting field samples,thus serving as a robust tool for indepth research into cotton physiology.

关键词： Cotton Plant hormones QuEChERS HPLC‒MS/MS

Nomogram prediction of vessels encapsulating tumor clusters in small hepatocellular carcinoma≤3 cm based on enhanced magnetic resonance imaging

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1808-1820页

作者： Hui-Lin Chen Rui-Lin He Meng-Ting Gu Xing-Yu Zhao kai-Rong song Wen-Jie Zou Ning-Yang Jia Wan-Min Liu School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Radiology The Third Affiliated Hospital of Shanghai Naval Military Medical UniversityShanghai 200438China Department of Radiology Tongji University Affiliated Tongji HospitalShanghai 200065China

BACKGROUND Vessels encapsulating tumor clusters(VETC)represent a recently discovered vascular pattern associated with novel metastasis mechanisms in hepatocellular carcinoma(HCC).However,it seems that no one have focused on predicting VETC status in small HCC(sHCC).This study aimed to develop a new nomogram for predicting VETC positivity using preoperative clinical data and image features in sHCC(≤3 cm)*** To construct a nomogram that combines preoperative clinical parameters and image features to predict patterns of VETC and evaluate the prognosis of sHCC *** A total of 309 patients with sHCC,who underwent segmental resection and had their VETC status confirmed,were included in the *** patients were recruited from three different hospitals:Hospital 1 contributed 177 patients for the training set,Hospital 2 provided 78 patients for the test set,and Hospital 3 provided 54 patients for the validation *** predictors of VETC were identified through univariate and multivariate logistic *** independent predictors were then used to construct a VETC prediction model for *** model’s performance was evaluated using the area under the curve(AUC),calibration curve,and clinical decision ***,Kaplan-Meier survival analysis was performed to confirm whether the predicted VETC status by the model is associated with early recurrence,just as it is with the actual VETC status and early *** Alpha-fetoprotein_lg10,carbohydrate antigen 199,irregular shape,non-smooth margin,and arterial peritumoral enhancement were identified as independent predictors of *** model incorporating these predictors demonstrated strong predictive *** AUC was 0.811 for the training set,0.800 for the test set,and 0.791 for the validation *** calibration curve indicated that the predicted probability was consistent with the actual VETC status in all three ***,the decision curve analysis demonstr

关键词： Small hepatocellular carcinoma Vessels encapsulating tumor clusters Nomogram Magnetic resonance imaging Multicenter