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1Main seagrass beds and threats to their habitats in the coastal sea of South China显示文摘The distribution, species, biomass,productivity of main seagrasses and their sufferedmain threats are introduced and discussed in thispaper based on the field surveys in the offshore areas of Guangdong, Guangxi and Hainan provinces.The seagrass beds distributed mainly in Liusha Bay,Donghai Island and Hailing Island of GuangdongProvince; Hepu and Pearl Bay of Guangxi ZhuangAutonomous Region; Li’an Bay, Xincun Bay, Longwan Bay and Sanya Bay of Hainan Province and soon. The total area of seagrass beds in the coastal seaof South China is about 2400 ha. There are about 8species, such as Halophila ovalis, Halodule uninervisHalophila beccarii, Zostera japonica, Enhalus acoroides, Thalassia hemperichii, Ruppia martime andCymodocea rotundata. These seagrasses have highbiomass and productivity. However, they are subjected to some threats resulting from artificial andnatural factors, especially anthropogenic causes,such as culture of shrimps and fishes, shellfish collection, fishing by means of poisons, electric powerand explosives as well as trawling, artificial pollution,dredging channels, and typhoons natural disaster.HUANG Xiaoping HUANG Liangmin LI Yinghong XU Zhanzhou FONG C W HUANG Daojian HAN Qiuying HUANG Hui TAN Yehui LIU Sheng 2006Chinese Science Bulletin2006,51,B12:36
2T2期胆囊癌肿瘤位置和手术范围对预后的影响:一项国际多中心研究显示文摘T2期胆囊癌根据肿瘤位置不同,进一步细分为T2a(腹膜侧)或T2b期(肝脏侧)。既往有研究认为对于腹膜侧(T2a)肿瘤,在不影响预后的情况下可避免肝脏切除,但是目前仍然缺乏可靠的证据。为了探讨肿瘤位置对T2期胆囊癌的预后价值并明确手术切除的适当范围,该研究分析了韩国、日本、智利和美国的14家医院中937例接受胆囊癌手术患者的临床及病理资料。Kwon W Kim H Han Y 杨发才(编译) 2020中华医学杂志2020,100,39:21
3以白皮松树轮宽度重建公元1616年以来山东于林年平均最低气温显示文摘基于树轮宽度指标,重建了山东于林地区过去392a来上年10月到当年9月平均最低气温。重建序列方差解释量为53.7%。该序列与当年1—12月平均最低气温相关高达0.92(1958—2007,P〈0.0001),因此它被视为研究地区年平均最低气温序列。重建序列显示1960-1998年,于林增温速率明显高于全国水平,反映了在增温的大背景下。东部地区表现更为明显。1998年之后,树轮记录与观测数据同时显示出,该地区上年10月至当年9月平均最低气温呈明显下降趋势。周期分析显示。在99%置信度上于林392a来全年平均最低气温有2.28a、2.30a、3.16a、3.40a的准周期.与气象学上的“准两年脉动”十分一致。在1850-2007年.重建序列与全球海表温度和全球平均温度及全球陆地温度相关达0.70~0.73。1950年以后,重建序列与北极涛动指数、北大西洋涛动指数及亚洲太平洋涛动指数均显著相关.表明山东地区在一定程度上反映了大范围的海-陆-气耦合过程,也表明山东地区是对全球变化敏感的地区。刘禹 雷莺 宋慧明 包光 孙铂 LINDERHOLM Hans W 王守功 2010地球环境学报2010,1,1:12
4Pro12Ala polymorphism of the peroxisome proliferator-activated receptor γ2 in patients with fatty liver diseases显示文摘AIM:To test the occurrence of the Pro12Ala mutation of the peroxisome proliferator-activated receptor-γ (PPARγ)2-gene in patients with non-alcoholic fatty liver disease (NAFLD) or alcoholic fatty liver disease (AFLD).METHODS:DNA from a total of 622 specimens including 259 blood samples of healthy blood donors and 363 histologically categorized liver biopsies of patients with NAFLD (n=263) and AFLD (n=100) were analyzed by Real-time polymerase chain reaction using allele-specific probes.RESULTS:In the NAFLD and the AFLD collective,3% of the patients showed homozygous occurrence of the Ala12 PPARγ2-allele,differing from only 1.5% cases in the healthy population.In NAFLD patients,a high incidence of the Ala12 mutant was not associated with the progression of fatty liver disease.However,we observed a significantly higher risk (odds ratio=2.50,CI:1.05-5.90,P=0.028) in AFLD patients carrying the mutated Ala12 allele to develop inflammatory alterations.The linkage of the malfunctioning Ala12-positive PPARγ2 isoform to an increased risk in patients with AFLD to develop severe steatohepatitis and fibrosis indicates a more prominent anti-inflammatory impact of PPARγ2 in progression of AFLD than of NAFLD.CONCLUSION:In AFLD patients,the Pro12Ala single nuclear polymorphism should be studied more extensively in order to serve as a novel candidate in biomarker screening for improved prognosis.Johannes W Rey Andrea Noetel Aline Hardt Ali Canbay Hakan Alakus Axel zur Hausen Hans Peter Dienes Uta Drebber Margarete Odenthal 2010World Journal of Gastroenterology2010,16,46:11
5Cyclosporin A impairs dendritic cell migration by regulating chemokine receptor expression and inhibiting cyclooxygenase-2 expression显示文摘Chen T Guo J Yang M Han C Zhang M Chen W Liu Q Wang J Cao X 2005第二军医大学学报2005,26,11:11
6Bis(7)-tacrine attenuates beta amyloid-induced neuronal apoptosis by regulating L-type calcium channels显示文摘Fu H Li W Lao Y Luo J Lee NT Kan KK Tsang HW Tsim KW Pang Y Li Z Chang DC Li M Han Y 2006中国生物学文摘2006,20,10:10
7Nationwide trends and predictors of inpatient mortality in 83884 transjugular intrahepatic portosystemic shunt显示文摘AIM: To evaluate and validate the national trends and predictors of in-patient mortality of transjugular intrahepatic portosystemic shunt(TIPS) in 15 years.METHODS: Using the National Inpatient Sample which is a part of Health Cost and Utilization Project, we identified a discharge-weighted national estimate of 83884 TIPS procedures performed in the United States from 1998 to 2012 using international classification of diseases-9 procedural code 39.1. The demographic, hospital and co-morbility data were analyzed using a multivariant analysis. Using multi-nominal logistic regression analysis, we determined predictive factors related to increases in-hospital mortality. Comorbidity measures are in accordance to the Comorbidity Software designed by the Agency for Healthcare Research and Quality.RESULTS: Overall, 12.3% of patients died during hospitalization with downward trend in-hospitalmortality with the mean length of stay of 10.8 ± 13.1 d. Notable, African American patients(OR = 1.809 vs Caucasian patients, P < 0.001), transferred patients(OR = 1.347 vs non-transferred, P < 0.001), emergency admissions(OR = 3.032 vs elective cases, P < 0.001), patients in the Northeast region(OR = 1.449 vs West, P < 0.001) had significantly higher odds of inhospital mortality. Number of diagnoses and number of procedures showed positive correlations with in-hospital death(OR = 1.249 per one increase in number of procedures). Patients diagnosed with acute respiratory failure(OR = 8.246), acute kidney failure(OR = 4.359), hepatic encephalopathy(OR = 2.217) and esophageal variceal bleeding(OR = 2.187) were at considerably higher odds of in-hospital death compared with ascites(OR = 0.136, P < 0.001). Comorbidity measures with the highest odds of in-hospital death were fluid and electrolyte disorders(OR = 2.823), coagulopathy(OR = 2.016), and lymphoma(OR = 1.842).CONCLUSION: The overall mortality of the TIPS procedure is steadily decreasing, though the length of stay has remained relatively constant. Specific patient ethnicity, location, transfer status, primary diagnosis and comorbidities correlate with increased odds of TIPS in-hospital death.Edward Wolfgang Lee Andrew Kuei Sammy Saab Ronald W Busuttil Francisco Durazo Steven-Huy Han Mohamed M El-Kabany Justin P Mc Williams Stephen T Kee 2016World Journal of Gastroenterology2016,22,25:7
8饲喂玉米秸秆和混合粗饲料日粮对荷斯坦奶牛乳脂肪酸组成的影响显示文摘本试验研究了调整日粮精粗比对奶牛乳脂中脂肪酸组成的影响,比较了玉米秸秆和优质粗饲料的饲喂效果。将24头荷斯坦奶牛(泌乳日龄136d±37d)分为2组,分别饲喂2种日粮,即高粗饲料日粮(MF日粮,日粮精粗比(F︰C)=60︰40),粗饲料来源为苜蓿干草、玉米青贮和羊草,以及以玉米秸秆为单一粗饲料来源的低粗饲料日粮(CS日粮,(F︰C)=40︰60)。试验期9周。试验期间测定产奶量、乳脂肪含量和乳脂肪中脂肪酸组成。日粮处理对产奶量和乳脂肪含量无影响,而干物质采食量(P<0.01)和乳脂肪产量(P<0.05)MF组均高于CS组。与CS组相比,饲喂MF日粮提高了总不饱和脂肪酸的摄入量及乳脂肪中C18:0和C18:3含量(P<0.01),然而,<16C脂肪酸含量下降(P<0.05)。乳中总饱和脂肪酸、单不饱和脂肪酸和多不饱和脂肪酸含量差异均不显著。MF组乳脂肪中总不饱和脂肪酸与其每日摄取量之比较CS组低,说明高比例粗饲料更易导致瘤胃氢化作用。Han R W 孙鹏 2014中国畜牧兽医2014,41,3:4
9残余应力导致三层聚烯烃管道防腐层剥离与开裂显示文摘这是美国运输部发起的研究项目,一个管道防腐层专家团队参与了本研究项目,评价了三层聚烯烃管道外防腐涂层(3LPO)的完整性。研究表明,三层聚烯烃管道外防腐涂层(3LPO)存在剥离和面层开裂两大完整性问题。过去几年里,据文献报道,三层聚烯烃管道外防腐涂层(3LPO)的熔结环氧粉末(FBE)底漆与钢管界面上发生多起防腐层剥离事故,以及聚丙烯(PP)面层发生开裂事故。这些防腐层事故引起人们对使用三层聚烯烃管道外防腐涂层(3LPO)的关注。一般来讲,三层聚烯烃管道外防腐涂层(3LPO)采用比较厚的聚烯烃面层增强防腐层抗机械损伤和防止水渗透的能力。但是,聚烯烃的热膨胀系数比钢材高得多,结果在防腐层系统里产生比较高的残余热应力。因为残余应力高,造成防腐层剥离,尤其在管端截短防腐层和任何防腐层的边上,因为这些是高应力集中部位。特别是假如钢管表面预处理不当,就无法保证防腐层持久达到很强的粘合强度。如果熔结环氧粉末(FBE)底漆配方选择不当,发生热氧化降解,也导致防腐层过早失效。如果使用温度很高,聚丙烯也会因为热氧化降解而变脆。在残余应力下,这样脆性的聚丙烯面层就会开裂。本文分析了三层聚烯烃管道外防腐涂层(3LPO)中的残余应力,并且探讨了残余应力对三层聚烯烃管道外防腐涂层(3LPO)剥离和聚丙烯(PP)面层开裂机理的影响。B.T.A.Cheng S Hung-jue J Han D Wong A Kehr M Mallozzi F Aguirre H Pham W Snider 王向农(译) 2011防腐保温技术2011,19,3:3
10Coronary artery disease in congenital single coronary artery in adults:A Dutch case series显示文摘AIM:To assess the current diagnostic and therapeutic management and the clinical implications of congenital single coronary artery(SCA) in adults.METHODS:We identified 15 patients with a SCA detected from four Dutch angiography centers in the period between 2010 and 2013.Symptomatic patients who underwent routine diagnostic coronary angiography(CAG) for suspected coronary artery disease and who incidentally were found to have isolated SCA were analyzed.RESULTS:Fifteen(7 females) with a mean age of 58.5 ± 13.78 years(range 43-86) had a SCA.ConventionalCAG demonstrated congenital isolated SCA originating as a single ostium from the right sinus of Valsalva in 6 patients and originating from the left in 9 patients.Minimal to moderate coronary atherosclerotic changes were found in 4,and severe stenotic lesions in another 4 patients.Seven patients were free of coronary atherosclerosis.Runs of non-sustained ventricular tachycardia were documented in 2 patients,one of whom demonstrated transmural ischemic changes on presentation.Myocardial perfusion scintigraphic evidence of transmural myocardial ischemia was found in 1 patient due to kinking and squeezing of the SCA with an interarterial course between the aorta and pulmonary artery.Multi-slice computed tomography(MSCT) was helpful to delineate the course of the anomalous artery relative to the aorta and pulmonary artery.Percutaneous coronary intervention was successfully performed in 3 patients.Eight patients were managed medically.Arterial bypass graft was performed in 4 patients with the squeezed SCA.CONCLUSION:SCA may be associated with transient transmural myocardial ischemia and aborted sudden death in the absence of coronary atherosclerosis.The availability and sophistication of MSCT facilitates the delineation of the course of a SCA.We present a Dutch case series and review of the literature.Salah AM Said Willem G de Voogt Suat Bulut Jacques Han Peter Polak Rogier LG Nijhuis Jeroen W op den Akker Andries Slootweg 2014World Journal of Cardiology2014,6,4:3
11Corrosion resistance of tannic acid,d-limonene and nano-ZrO_(2)modified epoxy coatings in acid corrosion environments显示文摘The protection of rusted carbon steel in acid corrosion environments is of great significance for equipment to keep safe operation.In this work,we presented a method to protect the rusted steel by ru st conversion treatment and epoxy coating.Tannic acid was selected as rust conversion agent.Tannic acid,D-limonene and nano-ZrO_(2)were used to improve the corrosion resistance of epoxy coatings.The Raman spectra,Xray diffraction and 3 D confocal images were used to characterize the rust conversion reaction.Ad hesion test showed that the loss of wet adhesion of the optimal coating was relatively low due to the addition of tannic acid,limonene and nano-ZrO(2).The corrosion resistance of five different coatings was investigated by scanning electron microscopy(SEM)and electrochemical analysis.Results show that after 264 h acid immersion,the low frequency resistance of the optimal coating consisting of rust conversion treatment and additives is 10^(7)Ωcm^(2),three orders magnitude higher than that of the pristine coating.Moreover,SEM indicates that the optimal coating possesses a smooth surface and an unbroken interface between substrate and coating.Accordingly,the corrosion-resistant mechanism of the hybrid coating is proposed.Junwei Chang Zhenyu W ang En-hou Han Xinlei Liang Gang Wang Zuyao Yi Na Li 2021Journal of Materials Science & Technology2021,,6:3
12Effects of mesenchymal stem cells on differentiation, maturation, and function of human monocyte-derived dendritic cells显示文摘Zhang,W Ge,W Li,CH You,SG Liao,LM Han,Q Deng,WM Zhao,RCH 2005中国生物学文摘2005,19,3:3
13安捷伦液相/离子阱(XCT)质谱检测虾仁及家禽中的硝基呋喃代谢物显示文摘在液相/离子阱质谱上,利用液相/质谱/质谱方法对鸡肉及虾仁中硝基呋喃代谢物残留进行了定性定量分析.对于四种硝基呋喃代谢物,其定量限在0125到05μg·kg-1的范围内,分析结果完全满足欧盟的1μg·kg-1的最低检测限量的要求.Bernhard wüst Christian Sauber Hans (J) A van Rhijn 2004环境化学2004,23,6:2
14Intense single-band red upconversion emission in BiOCl:Er3+ layered semiconductor via co-doping Ho3+显示文摘Exploring a new tuning way to facilely realize single-band red emission in trivalent rare-earth ions(RE3+) doped upconversion(UC) materials is still desirable.In this work,the intense single-band red emission is achieved by co-doping only Ho3+in the BiOCl:Er3+ under 1550 nm excitation.In the BiOCl layered host,co-doping Ho3+can further enhance the red emission and simultaneously suppress the green emission of Er3+,and thus obviously improve the red-to-green(R/G) ratio.It is found that Ho3+does not se rve as ene rgy trapping through the 5 I6 state as in traditional UC materials but acts as ET bridge(4 S3/2,2 H11/2(Er3+)→5 F4,5 S2(Ho3+)→4 F9/2(Er3+)).The tuning mechanism of Ho3+is discussed in detail and further confirms through a comparative experiment.Our research gives an unusual perspective to tune the UC behavior of Er3+through co-doping Ho3+,which might be inspiring for achievement of single-band red UC emission.Yuehong Peng Jincai Peng Jiajun Han Tianhui Wang Zhaoyi Yin Jianbei Qiu Qi W ang Zhengwen Yang Zhiguo Song 2020Journal of Rare Earths2020,38,6:2
15Photovoltaic properties of close-space sublinated CdTe solar cell显示文摘Han B W Park S C Ahn J H 1998Solar Energy1998,64,5:2
16Boosting Lean Electrolyte Lithium-Sulfur Battery Performance with Transition Metals: A Comprehensive Review显示文摘Lithium–sulfur(Li–S) batteries have received widespread attention, and lean electrolyte Li–S batteries have attracted additional interest because of their higher energy densities. This review systematically analyzes the effect of the electrolyte-to-sulfur(E/S) ratios on battery energy density and the challenges for sulfur reduction reactions(SRR) under lean electrolyte conditions. Accordingly, we review the use of various polar transition metal sulfur hosts as corresponding solutions to facilitate SRR kinetics at low E/S ratios(< 10 μL mg~(-1)), and the strengths and limitations of different transition metal compounds are presented and discussed from a fundamental perspective. Subsequently, three promising strategies for sulfur hosts that act as anchors and catalysts are proposed to boost lean electrolyte Li–S battery performance. Finally, an outlook is provided to guide future research on high energy density Li–S batteries.Hui Pan Zhibin Cheng Zhenyu Zhou Sijie Xie Wei Zhang Ning Han Wei Guo Jan Fransaer Jiangshui Luo Andreu Cabot Michael Wübbenhorst 2023Nano-Micro Letters2023,15,10:2
17Local signals in stem cell-based bone marrow regeneration显示文摘Han W Yu Y Liu XY 2006中国生物学文摘2006,20,5:2
18The ASIC Design for Synthesizing Dual Channel Gauss White Noise显示文摘Cui W Han Y Q Long T 2002Chinese Journal of Electronics2002,11,3:2
19Computation of flow through the oesophagogastric junction显示文摘Whilst methods exist to indirectly measure the effects of increased flow or gastro-oesophageal refluxing, they cannot quantitatively measure the amount of acid travelling back up into the oesophagus during reflux, nor can they indicate the flow rate through the oesophagogastric junction (OGJ). Since OGJ dysfunction affects flow it seems most appropriate to describe the geometry of the OGJ and its effect on the flow. A device known as the functional lumen imaging probe (FLIP) has been shown to reliably measure the geometry of and pressure changes in the OGJ. FLIP cannot directly measure flow but the data gathered from the probe can be used to model flow through the junction by using computational flow dynamics (CFD). CFD uses a set of equations known as the Navier-Stokes equations to predict flow patterns and is a technique widely used in engineering. These equations are complex and require appropriate assumptions to provide simplifications before useful data can be obtained. With the assumption that the cross-sectional areas obtained via FLIP are circular, the radii of these circles can be obtained. A cubic interpolation scheme can then be applied to give a high-resolution geometry for the OGJ. In the case of modelling a reflux scenario, it can be seen that at the narrowest section a jet of fluid squirts into the oesophagus at a higher velocity than the fluid surrounding it. This jet has a maximum velocity of almost 2 ms-1 that occurs where the OGJ is at its narrowest. This simple prediction of acid ‘squirting’ into the oesophagusillustrates how the use of numerical methods can be used to develop a better understanding of the OGJ. This initial work using CFD shows some considerable promise for the future.Barry P McMahon Karl D Odie Kenneth W Moloney Hans Gregersen 2007World Journal of Gastroenterology2007,13,9:2
20甜菜碱对肥育猪生长激素脉冲释放和血清代谢的影响显示文摘用添加含量为0和0.125%甜菜碱的日粮饲喂肥育猪,试验对杂交肥育猪日粮中甜菜碱对猪的生长性能、生长激素(GH)脉冲释放及血清代谢的影响进行研究。每试验组3个重复,每个重复8头猪(4头去势公猪,4头母猪),试验在饲喂后3h内每15min采集一次血液样本,测定生长激素脉冲释放。结果表明:添加甜菜碱组平均日增重增加5.45%(P〈0.05),而平均日采食量和饲料转化率则不受影响。Huang Q C Xu Z R Han X Y Li W F 2007饲料博览(技术版)2007,,7:2
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