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185篇 您的检索式:作者名="Lixin Zhao"
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1Study on the antiulcer effects of Veronicastrum axillare on gastric ulcer in rats induced by ethanol based on tumor necrosis factor-α(TNF-α)and endothelin-1(ET-1)显示文摘Objective:To assess whether Veronicastrum axillare(V.axillare)can ameliorate ethanol-induced gastric mucosal lesions in rats,reduce the production of pro-inflammatory cytokines,suppress apoptosis and improve local microcirculation disturbances.Methods:Totally 48 male Sprague-Dawley rats were randomly divided into six groups,eight rats in each group.Rats in the normal group and the model group were administered with 0.9%normal saline respectively.Rats in the positive group and ranitidine group were administered with 0.18%ranitidine suspension by intragastric administration respectively.Those in the high dose V.axillare group,the medium dose V.axillare group and the low dose V.axillare group were administrated with V.axillare at the daily dose of 2.8 g/kg,1.4 g/kg and 0.7 g/kg by intragastric administration.Gastric mucosal lesions were produced by intragastric administration of absolute ethanol.Water extract of V.axillare was successively injected for 14 d and last day was injected 1 h before ethanol administration.Gastric mucosal ulcer index and ulcer inhibitory rate were counted by improved Guth methods.The tissue sections were made for pathological histology analysis.Also,we measured the concentrations of tumor necrosis factor-α(TNF-α)and endothelin-1(ET-1)in gastric mucosal,as an index of the pro-inflammatory cytokines,apoptosis and local microcirculation.Besides,the mRNA contents of TNF-αand ET-1 were measured to verify effects on gene expression by real-time fluorescent quantitative PCR.Results:Water extract of V.axillare significantly ameliorated the gastric mucosal lesions induced by ethanol administration(P<0.01).Pro-inflammatory cytokines,TNF-a and ET-1 were increased after ethanol administration and significantly reduced by water extract of V.axillare.The expressions of TNF-αand ET-1 mRNA were also be inhibited by water extract of V.axillare.Conclusion:Current evidences show water extract of V.axillare is effective for defending against ethanol-induced gastric mucosal lesions,significantly inhibiting the production of proinflammatory cytokines and the expressions of TNF-αand ET-1 mRNA,which may be useful for inhibiting apoptosis and improving local microcirculation.Yong Du Weichun Zhao Leilei Lu Jiayan Zheng Xishi Hu Zhehan Yu Lixin Zhu 2013Asian Pacific Journal of Tropical Biomedicine2013,3,12:13
2Indoor SVOC pollution in China:A review显示文摘Epidemiological and toxicological studies have proved that semi-volatile organic compounds (SVOCs) may have significant adverse effects on human health.For example,phthalic acid esters (PAEs),polybrominated diphenyl ethers (PBDEs) and polycyclic aromatic hydrocarbons (PAHs) may harm the endocrine,reproductive and respiratory systems of humans.Moreover,some SVOCs are carcinogenic.This paper summarizes the source emission characteristics for typical SVOCs observed indoors,evaluates the gas-phase and particle-phase concentrations of indoor di-2-ethylhexyl phthalate (DEHP) under the steady-state condition,estimates the exposure of PAEs and the health risk of PAHs,and then proposes some solutions to some urgent problems for indoor SVOC pollution.The results show that the production and consumption quantities of plasticizers,coal and cigarettes in China are the highest in the world,and that the consumption of flame retardants and pesticides are also very high.As estimated,indoor plasticizer and flame retardant concentrations are higher in China than that of the developed countries such as the USA,which implies that indoor SVOC pollution may be more serious in China.According to the model analysis,DEHP remains mainly in the particle-phase under the steady-state condition;the particle-phase concentration of DEHP increases with increasing particle concentration.The exposure of DEHP is higher for children than it is for adults.It is estimated that 260 thousand people are diagnosed with cancer resulting from exposure to PAHs every year.A multidisciplinary approach to the further study of indoor SVOC pollution is necessary.WANG LiXin ZHAO Bin LIU Cong LIN Hui YANG Xu ZHANG YinPing 2010Chinese Science Bulletin2010,55,15:13
3Composition, origin and weathering process of surface sediment in Kumtagh Desert, Northwest China显示文摘Kumtagh 沙漠是在中国的八最大的沙漠之一,但是因为存取的困难,以前糟糕调查我们的学科交差的学习。在这份报纸, 33 件代表性的表面沉积样品从在实验室荒芜、分析的 Kumtagh 被收集获得重矿物质部件和 geochemical 元素内容。结果证明重矿物质的各种各样的类型在这些样品是在场的,与绿帘石和角闪石的高水平。Si 和艾尔收起化学作文的大部分。与上面的大陆人外壳(UCC ) 的 geochemical 元素的平均作文相比,除了 Si 和 Ca,所有元素被弄空到某个度;Fe, Mg, Ca, P, Ti 和 Mn 在他们的内容有高关联系数。矿物质和 Kumtagh 荒芜的沉积的 geochemical 作文在 Altyn Tagh 山脉和 Taklamakan 沙漠的附近与 Altyn Tagh 山脉,和冲积/洪水的扇子的表面沉积的岩石的有类似,显示 Kumtagh 荒芜的沉积的一主要来源位于 Altyn Tagh 山脉。在 Aqik 山谷和 Shule 河的更低的活动范围的冲积沉积物和湖沉积是容易的被侵蚀并且搬运由强壮在东北弯屈进 Kumtagh 沙漠,形成沙漠的另一来源扔。一张 A-CN-K 第三的图证明由 Na 和 K 的损失捱过的弱度化学药品发生在这些沉积,而 A-CNK-FM 第三的图建议 Fe 和 Mg 经历了重要化学区别。物理捱过过程为 mafic 矿物质在好粒子引起容易的侵蚀和丰富,这样粗糙的荒芜的沙粒子能相对在 Fe 和 Mg 被弄空。在经历不太化学的捱过的干旱区域的沉积的矿物质和 geochemical 作文被物理捱过主要影响。XU Zhiwei LU Huayu ZHAO Cunfa WANG Xianyan SU Zhizhu WANG Zhenting LIU Hongyi WANG Lixin LU Qi 2011Journal of Geographical Sciences2011,21,6:13
4肠道菌群在功能性便秘中的作用显示文摘功能性便秘非常常见,但其发病机制尚不明了。越来越多的证据显示,功能性便秘与肠道微生态失调有关,而肠道微生态与肠道转运之间很可能存在相互影响。本文对功能性便秘发生过程中肠道微生态所发挥作用的证据进行了总结。肠道微生态通过胆酸、短链脂肪酸、5-羟色胺和甲烷等相关微生物代谢活动调控结肠动力、结肠黏膜分泌和吸收,进而促使功能性便秘的发生。作为肠道微生态影响功能性便秘的证据支持,用益生菌、益生元、合生元和中药治疗功能性便秘时,常可观察到患者肠道微生态在菌种组成和功能上的改变。深入研究功能性便秘的病理发生,阐明微生态制剂治疗功能性便秘的药理机制,将为功能性便秘的新型治疗方法提供理论基础。Shengsheng Zhang Ruixin Wang Danyan Li Luqing Zhao Lixin Zhu 2021Gastroenterology Report2021,9,5:13
5Pediatric reference intervals in China(PRINCE):design and rationale for a large,multicenter collaborative cross-sectional study显示文摘There is a lack of accurate pediatric reference intervals(RIs) in China, with most commonly used RIs established without consideration of the effect of age and gender. The Pediatric Reference Intervals in China(PRINCE) project aims to establish and verify pediatric RIs for 31 common laboratory measurands.The project will be a large, multicenter cross-sectional study:14,490 healthy children and adolescents aged up to 19 years will be surveyed by 10 children's hospitals and one pediatric department of a university hospital. To evaluate the feasibility and efficiency of the study methods, 602 children were surveyed in the pilot phase of the PRINCE study in April 2017: it found that some measurands were distinctly age dependent and that there were differences between values for males and females. The results of the pilot study affirmed the necessity of the PRINCE project for Chinese pediatrics. The pilot also indicated potential difficulties in the full survey, e.g., difficulties in recruiting children aged under 3 years and insufficient collection of blood samples from infants. The operation of the PRINCE project has been modified based on the findings in the pilot study toward improving the validity of the PRINCE project and promoting its openness and transparency.Xin Ni Wenqi Song Xiaoxia Peng Ying Shen Yaguang Peng Qiliang Li Yan Wang Lixin Hu Yanying Cai Hong Shang Min Zhao Hong Jiang Yaoguo Huang Runqing Mu Wenxiang Chen Mingting Peng Chuanbao Zhang Jie Zeng Chenbin Li Hongling Yang Yongmei Jiang Jin Xu Guixia Li Hongbing Chen Yun Xiang Sancheng Cao Zhenxin Guo Dapeng Chen 2018Science Bulletin2018,63,24:12
6Petroleum Migration Direction of the Silurian Paleo-pools in the Tarim Basin, Northwest China显示文摘摘要:在这份报纸获得的结果显示 carbazole 类型混合物有高热的稳定性并且也在氧化和简历降级显示出稳定性。这种混合物仍然在分析干燥沥青样品有高集中和完全的分发,证明他们在学习 paleo 水池的石油移植是特别地有用的。在期间盆在在 Tarim 盆的 Tazhong 和 Tabei 区域的志留纪的油气体水池形成是第一阶段的(在志留纪时期的结束) 并且在 Awati 区域的秒阶段(在里面二叠) ,石油经历了长途的迁居。在志留纪的结束在在 Tazhong 的志留纪 paleo 水池的形成期间高举,石油主要在 Manjiaer 来自更低、中间的寒武纪的来源岩石下垂。石油向首先在 Tazhong 进入志留纪水库床的西南南方移居了。然后,它进一步沿着结构的带的高度从西北在志留纪以内移居了到东南到在 Tazhong 的志留纪 pinchout 边界的区域。在 Tabei 高举,在期间水池形成第一阶段,石油也从在 Manjiaer 的更低、中间的寒武纪的来源岩石下垂。它移植了西北进入在 Tabei 的志留纪水库床第一高举,然后迁居在志留纪水库以内在一样的方向继续,最后,石油在更高的位置被套住。在在志留纪的秒阶段水池形成期间,在在 Awati 附近的区域的床下垂,石油主要在 Awati 来自降低中间的寒武纪的来源岩石下垂。石油通过主要路径在 sag 附近在所有方向从产生中心移居了到志留纪水库,并且石油最后在更高的地点被套住。LIU Luofu ZHAO Yande HUO Hong CHEN Lixin CHEN Yuanzhuang ZHAO Suping LI Chao LI Shuangwen GUO Yongqiang LI Yan Key Lab for Hydrocarbon Accumulation Mechanism in the China University of Petroleum,Ministry of Education Basin and Reservoir Research Center, China University of Petroleum,Beijing 102249, China 2008Acta Geologica Sinica(English Edition)2008,82,1:12
7Thermal Modeling and Cooling Analysis of High-power Lithium Ion Cells显示文摘The heat generation model and three-dimensional computational fluid dynamics model for lithium ion cells were established with boundary conditions defined.In order to provide a better insight about the behaviors of high-power lithium ion cells under realistic discharge conditions,the temperature difference of the cells and an active thermal management system with a pure air-cooling mode were analyzed and predicted with the factors affecting the unevenness of temperature field discussed.The results show a significant effect of the cooling flow rate on the temperature rise of the cells for all discharge rates.Average surface temperatures are relatively uniform at lower discharge rate that makes it easier to control the temperature of the pack.Cell temperatures are expected to rise significantly toward the end of discharge and they show non-uniformity at higher discharge rates.Adequate air flow rate of active cooling is required at high discharge rate and high ambient temperature for practical pack thermal management system.Zhuqian Zhang Li Ji a Nan Zhao Lixin Yang 2011Journal of Thermal Science2011,20,6:10
8The historical and current research progress on jujube–a superfruit for the future显示文摘Jujube(Ziziphus jujuba Mill.),or Chinese date,is the most important species of Rhamnaceae,a large cosmopolitan family,and is one of the oldest cultivated fruit trees in the world.It originates from the middle and lower reaches of the Yellow River,the‘mother river’of the Chinese people.It is distributed in at least 48 countries on all continents except Antarctica and is becoming increasingly important,especially in arid and semiarid marginal lands.Based on a systematic analysis of the unique characteristics of jujube,we suggest that it deserves to be recognized as a superfruit.We summarized historical research achievements from the past 3000 years and reviewed recent research advances since 1949 in seven fields,including genome sequencing and application,germplasm resources and systematic taxonomy,breeding and genetics,cultivation theory and techniques,pest control,postharvest physiology and techniques,and nutrition and processing.Based on the challenges facing the jujube industry,we discuss eight research aspects to be focused on in the future.Mengjun Liu Jiurui Wang Lili Wang Ping Liu Jin Zhao Zhihui Zhao Shengrui Yao Florin Stănică Zhiguo Liu Lixin Wang Changwei Ao Li Dai Xiansong Li Xuan Zhao Chunxiang Jia 2020Horticulture Research2020,7,1:10
9Sustaining enhanced condensation on hierarchical mesh-covered surfaces显示文摘Controlling the solid–liquid–vapor tri-phase interface is of fundamental importance for a broad range of industrial applications including biomedical engineering, energy production and utilization, environmental control, water production, and thermal management. Although a lot of progress has been made over the past few decades on surface manipulation for promoting droplet removal, it is challenging to accelerate both droplet growth and surface refreshing for enhancing vapor-to-liquid condensation. Here we present a superhydrophobic hierarchical mesh-covered(hi-mesh) surface to enable continuous sucking flow of liquid condensate, which achieves fourfold-higher droplet growth and 36.8% faster surface refreshing compared to the state-of-the-art dropwise condensation. Unprecedented enhanced condensation heat transfer is observed to be sustained over a wide range of surface subcooling on the hi-mesh surfaces. This demonstration of sustained enhanced condensation enhancement is not only of fundamental scientific importance, but also provides a viable strategy for large-scale deployment of micro/nanostructured surfaces in a diverse range of technologies.Rongfu Wen Shanshan Xu Dongliang Zhao Lixin Yang Xuehu Ma Wei Liu Yung-Cheng Lee Ronggui Yang 2018National Science Review2018,5,6:9
10Characterization of 500 Chinese patients with cervical esophageal cancer by clinicopathological and treatment outcomes显示文摘Objective: There are no comprehensive studies on survival outcomes and optimal treatment protocols for cervical esophageal cancer(CEC), due to its rare clinical prevalence. Our objective was to determine the relationship between pathological characteristics, treatment protocols, and survival outcomes in Chinese CEC patients.Methods: A total of 500 Chinese CEC patients were selected from our 500,000 esophageal and gastric cardia carcinoma database(1973–2018). There were two main groups: patients treated with surgery, and patients receiving non-surgical treatments(radiotherapy, radiochemotherapy, and chemotherapy). The Chi-square test and Kaplan–Meier method were used to compare the continuous variables and survival.Results: Among the 500 CEC patients, 278(55.6%) were male, and the median age was 60.9 ± 9.4 years. A total of 496 patients(99.2%) were diagnosed with squamous cell carcinoma. In 171(34.2%) patients who received surgery, 22(12.9%) had undergone laryngectomy. In 322(64.4%) patients who received non-surgical treatments, 245(76.1%) received radiotherapy. Stratified survival analysis showed that only T stage was related with survival outcomes for CEC patients in the surgical group, and the outcomes between laryngectomy and non-laryngectomy patients were similar. It was noteworthy that the 5-year survival rate was similar in CEC patients among the different groups treated with surgery, radiotherapy, chemotherapy, or radiochemotherapy(P = 0.244). Conclusions: The CEC patients had similar survival outcomes after curative esophagectomy and radiotherapy, including those with or without total laryngectomy. These findings suggest that radiotherapy could be the initial choice for treatment of Chinese CEC patients.Peinan Chen Xueke Zhao Fuyou Zhou Xin Song Shoujia Hu Yan Jin Xianzeng Wang Xuena Han ZongminFan Ran Wang Bei Li Wenli Han Panpan Wang Jilin Li Lixin Wan Liguo Zhang Qide Bao Fubao Chang Yanru Qin Zhiwei Chang Jianwei Ku Haijun Yang Ling Yuan Jingli Ren Xuemin Li Lidong Wang 2020Cancer Biology & Medicine2020,17,1:6
11Comparison of lymph node number and prognosis in gastric cancer patients with perigastric lymph nodes retrieved by surgeons and pathologists显示文摘Objective: To compare the numbers of positive and total lymph nodes and prognosis in gastric cancer patients whose perigastric lymph node retrieval was performed by surgeons and pathologists.Methods: We conducted a retrospective analysis of clinical and follow-up data from 1,056 patients who underwent gastric cancer D2 radical lymph node resection between January 2008 and December 2010 in the Gastrointestinal Surgery Department of Yantai Yuhuangding Hospital.The follow-up ended in December 2015.Patients were divided into two groups according to the specialty of physicians who performed the postoperative perigastric lymph node retrieval: the surgeon group(475 cases) and the pathologist group(581 cases).The numbers of positive and total perigastric lymph nodes and the 3- and 5-year survival were compared between gastric cancer patients in the two groups overall and stratified by TNM stage(AJCC 7th Edition).Results: Overall, the numbers of positive and total lymph nodes were significantly higher in the surgeon group than in the pathologist group(6.53±4.07 vs.4.09±3.70, P=0.021; 29.64±11.50 vs.20.71±8.56, P<0.001).Further analysis showed that the total number of lymph nodes in stage Ⅰ patients(19.40±9.62 vs.15.45±8.59, P=0.011) and the numbers of positive and total lymph nodes in stage Ⅱ(1.38±1.08 vs.0.87±1.55, P=0.031; 25.35±10.80 vs.16.75±8.56, P<0.001) and stage Ⅲ patients(8.11±6.91 vs.6.66±5.12, P=0.026; 32.34±12.55 vs.25.45±8.31, P<0.001)were significantly higher in the surgeon group than in the pathologist group.The survival analysis showed that the3- and 5-year survival of stage Ⅱ and Ⅲ patients was significantly higher in the surgeon group than in the pathologist group(82.0% vs.73.1%, 69.5% vs.61.2%, P=0.038; 49.2% vs.38.9%, 36.3% vs.28.0%; P=0.045).Conclusions: Compared with retrieval performed by pathologists, postoperative perigastric lymph node retrieval performed by surgeons was associated with significant increase in the total lymph node number of stage Ⅰ patients, the numbers of positive and total lymph nodes of stage Ⅱ and Ⅲ patients, and the survival of stage Ⅱ and stage Ⅲ gastric cancer patients.Lixin Jiang Zengwu Yao Yifei Zhang Jinchen Hu Dawei Zhao Huiyuan Zhai Xixun Wang Zhenbin Zhang Dong Wang 2016Chinese Journal of Cancer Research2016,28,5:5
12Effects of spatial distribution of soil parameters on soil moisture retrieval from passive microwave remote sensing显示文摘In this paper,we studied the effect of spatial distribution of soil parameters on passive soil moisture retrieval at pixel scale.First,we evaluated the forward microwave emission model and soil moisture retrieval algorithm accuracy through the observa-tion of field experiments.Then,we used soil parameters in different spatial distribution patterns,including random,normal,and uniform distribution,to determine the different levels of heterogeneity on soil moisture retrieval,in order to seek the rela-tionship between heterogeneity and soil moisture retrieval error.Finally,we conducted a controlled heterogeneity effect ex-periment measurements using a Truck-mounted Multi-frequency Radiometer(TMMR) to validate our simulation results.This work has proved that the soil moisture retrieval algorithm had a high accuracy(RMSE=0.049 cm3 cm 3) and can satisfy the need of this research.The simulation brightness temperatures match well with observations,with RMSE=9.89 K.At passive microwave remote sensing pixel scale,soil parameters with different spatial distribution patterns could have different levels of error on soil moisture estimation.Overall,we found that soil moisture with a random distribution in a satellite pixel scale can cause the largest error,with a normal distribution being the second,and a uniform distribution the least due to the smallest het-erogeneity.ZHANG Tao ZHANG LiXin JIANG LingMei ZHAO ShaoJie ZHAO TianJie LI YunQing 2012Science China Earth Sciences2012,55,8:5
13Effects of different biochars on antibiotic resistance genes during swine manure thermophilic composting显示文摘Elimination of antibiotic resistance genes(ARGs)in animal manure from concentrated animal feeding operations by thermophilic composting has drawn increasing attention.This study investigated the effects of sawdust biochar,corn stover biochar and peanut hull biochar with three spiked levels on ARGs in swine manure during thermophilic composting.Thirteen ARGs corresponding to four classes of antibiotics(tetracyclines,sulfonamides,macrolides and quinolones)were determined in the composting piles.Results indicated that the ten tested composting groups became fully mature after 30-day thermophilic composting process.tetM,tetO and ermB were reduced in all tested groups;tetC and tetG,tetX,sul1,sul2,ermF,qnrD and aac(6’)-Ib were mostly reduced under low level biochar addition but increased under higher level biochar addition;gyrA increased under medium biochar addition and reduced in other groups;oqxB remained comparatively stable throughout the composting process.The addition levels of spiked biochar are more important than types of spiked biochar on the removal of ARGs in the composting pile.The average removal rates of ARGs in the control group,low,medium and high level biochar addition groups were 0.24 logs,0.52-0.72 logs,-0.52-0.18 logs and-0.19-0.21 logs,respectively.In summary,low level biochar addition could enhance the elimination of studied ARGs in swine manure during the composting process,while medium level biochar addition to the composting piles would increase the risk of ARGs’propagation.Jian Wang Bin Sui Yujun Shen Haibo Meng Lixin Zhao Haibin Zhou Ran Li Jingtao Ding Hongsheng Cheng Xi Zhang 2018International Journal of Agricultural and Biological Engineering2018,11,6:5
14Tribological properties of TiAlN-coated cermets显示文摘Ti(C,N)-based cermets were coated with TiAlN using multi-arc ion plating technology. Sliding wear tests were performed on the coated cermets. The microstructure and morphologies of the coated cermets before and after friction and wear tests were characterized. The results show that the TiAlN coating surface was smooth and its root mean square roughness was 16.6 nm. The hardness (HK) of TiAlN coating lay-ers reached approximately 3200 and the critical load (Lc) under which the coating failure occurred was 59 N. The sliding wear test results show that the friction coefficients of the TiAlN-coated cermets were lower than that of the cermets without any coating. Under the same load, the adhesion phenomenon of the counterpart materials on the specimens was improved and the mean friction coefficient increased with in-creasing sliding velocity. When the sliding velocity was 0.26 m·s-1, the mass of the coated cermets reduced. At the same sliding velocity, the average friction coefficient of the TiAlN-coated cermets was lower under a higher load. The wear mechanisms of the TiAlN-coated cermets were mainly adhesive and abrasive wear.ZHENG Liyun ZHAO Lixin XIONG Weihao 2009Rare Metals2009,28,1:4
15High rumen degradable starch decreased goat milk fat via trans-10,cis-12 conjugated linoleic acid-mediated downregulation of lipogenesis genes,particularly,INSIG1显示文摘Background:Starch is an important substance that supplies energy to ruminants.To provide sufficient energy for high-yielding dairy ruminants,they are typically fed starch-enriched diets.However,starch-enriched diets have been proven to increase the risk of milk fat depression(MFD)in dairy cows.The starch present in ruminant diets could be divided into rumen-degradable starch(RDS)and rumen escaped starch(RES)according to their different degradation sites(rumen or intestine).Goats and cows have different sensitivities to MFD.Data regarding the potential roles of RDS in milk fat synthesis in the mammary tissue of dairy goats and in regulating the occurrence of MFD are limited.Results:Eighteen Guanzhong dairy goats(day in milk=185±12 d)with similar parity,weight,and milk yield were selected and randomly assigned to one of three groups(n=6),which were fed an LRDS diet(Low RDS=20.52%),MRDS diet(Medium RDS=22.15%),or HRDS diet(High RDS=24.88%)for 5 weeks.Compared with that of the LRDS group,the milk fat contents in the MRDS and HRDS groups significantly decreased.The yields of short-,mediumand long-chain fatty acids decreased in the HRDS group.Furthermore,increased RDS significantly decreased ruminal B.fibrisolvens and Pseudobutyrivibrio abundances and increased the trans-10,cis-12 conjugated linoleic acid(CLA)and trans-10 C18:1 contents in the rumen fluid.A multiomics study revealed that the HRDS diet affected mammary lipid metabolism down-regulation of ACSS2,MVD,AGPS,SCD5,FADS2,CERCAM,SC5D,HSD17B7,HSD17B12,ATM,TP53RK,GDF1 and LOC102177400.Remarkably,the significant decrease of INSIG1,whose expression was depressed by trans-10,cis-12 CLA,could reduce the activity of SREBP and,consequently,downregulate the downstream gene expression of SREBF1.Conclusions:HRDS-induced goat MFD resulted from the downregulation of genes involved in lipogenesis,particularly,INSIG1.Specifically,even though the total starch content and the concentrate-to-fiber ratio were the same as those of the high-RDS diet,the low and medium RDS diets did not cause MFD in lactating goats.Lixin Zheng Shengru Wu Jing Shen Xiaoying Han Chunjia Jin Xiaodong Chen Shengguo Zhao Yangchun Cao Junhu Yao 2020Journal of Animal Science and Biotechnology2020,11,3:4
16Application of a Step-by-Step Fingerprinting Identification Method on a Spilled Oil Accident in the Bohai Sea Area显示文摘In recent years,oil spill accidents occur frequently in the marine area of China.Finding out the spilled oil source is a key step in the relevant investigation.In this paper,a step-by-step fingerprinting identification method was used in a spilled oil accident in the Bohai Sea in 2002.Advanced chemical fingerprinting and data interpretation techniques were used to characterize the chemical composition and determine the possible sources of two spilled oil samples.The original gas chromatography -flame ionization detec-tion (GC-FID) chromatogram of saturated hydrocarbons was compared.The gas chromatography-mass spectrometry (GC/MS) chromatograms of aromatic hydrocarbons terpane and sterane,n-alkane and poly-aromatic hydrocarbons (PAHs) were analyzed.The correlation analysis on diagnostic ratios was performed with Student’s t-test.It is found that the oil fingerprinting of the spilled oil (designated as sz1) from the polluted sand beach was identical with the suspected oil (designated as ky1) from a nearby crude oil refinery factory.They both showed the fingerprinting character of mixed oil.The oil fingerprinting of the spilled oil (designated as ms1) collected from the port was significantly different from oil ky1 and oil sz1 and was with a lubricating oil fingerprint character.The identification result not only gave support for the spilled oil investigation,but also served as an example for studying spilled oil accidents.SUN Peiyan GAO Zhenhui CAO Lixin WANG Xinping ZHOU Qing ZHAO Yuhui LI Guangmei 2011Journal of Ocean University of China2011,10,1:4
17The Tibetan Plateau Surface–Atmosphere Coupling System and Its Weather and Climate Effects: The Third Tibetan Plateau Atmospheric Science Experiment显示文摘The Tibetan Plateau(TP) is a key area affecting forecasts of weather and climate in China and occurrences of extreme weather and climate events over the world. The China Meteorological Administration, the National Natural Science Foundation of China, and the Chinese Academy of Sciences jointly initiated the Third Tibetan Plateau Atmospheric Science Experiment(TIPEX-Ⅲ) in 2013, with an 8–10-yr implementation plan. Since its preliminary field measurements conducted in 2013, routine automatic sounding systems have been deployed at Shiquanhe, Gaize, and Shenzha stations in western TP, where no routine sounding observations were available previously. The observational networks for soil temperature and soil moisture in the central and western TP have also been established. Meanwhile, the plateau-scale and regional-scale boundary layer observations, cloud–precipitation microphysical observations with multiple radars and aircraft campaigns, and tropospheric–stratospheric air composition observations at multiple sites, were performed. The results so far show that the turbulent heat exchange coefficient and sensible heat flux are remarkably lower than the earlier estimations at grassland, meadow, and bare soil surfaces of the central and western TP. Climatologically, cumulus clouds over the main body of the TP might develop locally instead of originating from the cumulus clouds that propagate northward from South Asia. The TIPEX-Ⅲ observations up to now also reveal diurnal variations, macro-and microphysical characteristics, and water-phase transition mechanisms, of cumulus clouds at Naqu station. Moreover, TIPEX-Ⅲ related studies have proposed a maintenance mechanism responsible for the Asian 'atmospheric water tower' and demonstrated the effects of the TP heating anomalies on African, Asian, and North American climates. Additionally, numerical modeling studies show that the Γ distribution of raindrop size is more suitable for depicting the TP raindrop characteristics compared to the M–P distribution, the overestimation of sensible heat flux can be reduced via modifying the heat transfer parameterization over the TP, and considering climatic signals in some key areas of the TP can improve the skill for rainfall forecast in the central and eastern parts of China. Furthermore, the TIPEX-Ⅲ has been promoting the technology in processing surface observations, soundings, and radar observations, improving the quality of satellite retrieved soil moisture and atmospheric water vapor content products as well as high-resolution gauge–radar–satellite merged rainfall products, and facilitating the meteorological monitoring, forecasting, and data sharing operations.Ping ZHAO Yueqing LI Xueliang GUO Xiangde XU Yimin LIU Shihao TANG Wenming XIAO Chunxiang SHI Yaoming MA Xing YU Huizhi LIU La JIA Yun CHEN Yanju LIU Jian LI Dabiao LUO Yunchang CAO Xiangdong ZHENG Junming CHEN An XIAO Fang YUAN Donghui CHEN Yang PANG Zhiqun HU Shengjun ZHANG Lixin DONG Juyang HU Shuai HAN Xiuji ZHOU 2019Journal of Meteorological Research2019,33,3:4
18Mitochondrial fusion/fission process involved in the improvement of catalpol on high glucose- induced hepatic mitochondrial dysfunction显示文摘Catalpol, iridoid glycoside,被显示了由 rescuing mitochondrial 功能,而是详细机制遗体施加血糖过低的效果不清楚还。在这研究,在糖尿病的条件下面的肝的线粒体上的 catalpol 的效果和机制进一步被检验。catalpol 的口头的管理显著地在高脂肪的导致食谱、导致 streptozotocin 的糖尿病的老鼠减少了血葡萄糖, triglyceride,和胆固醇层次。另外, catalpol 在源于糖尿病的肝 mitochondrial ATP 内容稀释了减少。而且,拥有一种长尺寸的线粒体的数字在对待 catalpol 的老鼠被增加。有趣地, mitochondrial 功能的导致 catalpol 的恢复与减少的分裂蛋白质 1 被联系并且 dynamin 相关的蛋白质象增加的 mitofusin 一样的 1 个表达式在肝的 1 个表达式。在 HepG2 房间, catalpol 减轻了 ATP 内容和 mitochondrial 膜潜力的减少,并且反应的氧种类形成的增加由高葡萄糖导致了。当房间与 catalpol 被对待时,线粒体的管状的特征被维持的米托特拉克·格林污点表演。Catalpol 也减少了分裂蛋白质 1 并且 dynamin 相关的蛋白质 1 表情和增加的 mitofusin 在 HepG2 房间的 1 表情。现在的结果建议 catalpol 能改善在一名糖尿病患者下面的肝的 mitochondrial 机能障碍状态,和这可能与它 mitochondrial 的规定有关熔化和分裂事件。Zhimeng Xu Luyong Zhang Xiaojie Li Zhenzhou Jiang Lixin Sun Guolin Zhao Guohua Zhou Heran Zhang Jing Shang Tao Wang 2015Acta Biochimica et Biophysica Sinica2015,47,9:4
19An Examination of the Predictability of Tropical Cyclone Genesis in High-Resolution Coupled Models with Dynamically Downscaled Coupled Data Assimilation Initialization显示文摘Predicting tropical cyclone(TC)genesis is of great societal importance but scientifically challenging.It requires fineresolution coupled models that properly represent air−sea interactions in the atmospheric responses to local warm sea surface temperatures and feedbacks,with aid from coherent coupled initialization.This study uses three sets of highresolution regional coupled models(RCMs)covering the Asia−Pacific(AP)region initialized with local observations and dynamically downscaled coupled data assimilation to evaluate the predictability of TC genesis in the West Pacific.The APRCMs consist of three sets of high-resolution configurations of the Weather Research and Forecasting−Regional Ocean Model System(WRF-ROMS):27-km WRF with 9-km ROMS,and 9-km WRF with 3-km ROMS.In this study,a 9-km WRF with 9-km ROMS coupled model system is also used in a case test for the predictability of TC genesis.Since the local sea surface temperatures and wind shear conditions that favor TC formation are better resolved,the enhanced-resolution coupled model tends to improve the predictability of TC genesis,which could be further improved by improving planetary boundary layer physics,thus resolving better air−sea and air−land interactions.Mingkui LI Shaoqing ZHANG Lixin WU Xiaopei LIN Ping CHANG Gohkan DANABASOGLU Zhiqiang WEI Xiaolin YU Huiqin HU Xiaohui MA Weiwei MA Haoran ZHAO Dongning JIA Xin LIU Kai MAO Youwei MA Yingjing JIANG Xue WANG Guangliang LIU Yuhu CHEN 2020Advances in Atmospheric Sciences2020,37,9:4
20Metagenome analysis reveals potential microbial functions in topsoil of wheat-maize rotation system with five-year application of fertilizers显示文摘Fertilization mode affects soil quality and ecological health.The effects of four fertilization regimens on lignocellulose content,readily degradable carbohydrate decomposition,and potential microbial functions in the topsoil of a wheat-maize rotation system between 2012 and 2017 were investigated.The fertilization regimens of control(control NFNB),high chemical fertilizer(HCF),high biochar plus low chemical fertilizer(HBLCF),and biochar-based fertilizer(BBF)were compared on soil fundamental properties,microbial structure,and potential function in soil carbohydrate degradation based on metagenome analysis.The diversity of carbohydrate-active enzyme genes in the topsoil microbial consortia in the four trials was primarily distributed within the ten ecologically most dominant phyla.Application of BBF was associated with the lowest decline in total nitrogen and P2O5(2012-2017:6.5%and 28.1%,respectively)and the most effective carbohydrate decomposition(2015-2017:67.0%for cellulose and 59.9%for readily degradable carbohydrate).Carbohydrate transport and metabolism accounted for 6.0%of reads assigned functional classification under the BBF regimen.These findings reveal the ecologically functional diversity of topsoil microorganisms and suggest BBF application as a promising strategy for sustainable agriculture and beneficial to soil health.Yujun Shen Lixin Zhao Haibo Meng Hongsheng Cheng Jingtao Ding Jiarui Wang Shanshan Dong Xi Zhang Liqiu Song Shengwei Zheng 2019International Journal of Agricultural and Biological Engineering2019,12,6:3
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