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1我国杭州地区秋季稻田的甲烷排放显示文摘1987年秋季在杭州郊区采用一套全自动的观测系统,对稻田的甲烷排放进行了观测。在整个晚稻灌溉期内,稻田是大气甲烷的一个源地,其甲烷释放率最高可达240mg/m^2·h。甲烷释放率具有很强的季节性变化,在水稻成熟期之前,甲烷释放率一般在40-60mg·CH_4/m^2·h的水平上波动,在成熟期间则降为10mg·CH_4/m^2·h的水平。除移栽期外的整个水稻生长期间的甲烷平均释放率为39mg/m^2·h。甲烷释放率具有明显的日变化,一般在午夜至凌晨3—4点达最大值,白天较低,变化也较小。这可能与水稻植物体由于其生理上的日变化引起的甲烷气体传输能力的日变化有关。实验没有观测到不同施肥(K_2SO_4和菜饼)对甲烷释放率的明显影响。阴雨天的降温一般在2—3天后引起甲烷释放率的迅速下降,这可能是因土壤中发酵细菌如产甲烷菌数量的减少造成的。尽管甲烷释放率和土壤温度在整个生长期间基本上是逐步下降的,但两者之间并没有简单的正相关性。土壤中产生的甲烷气体只有一小部分释放到大气中,从土壤中冒出来的气泡往往可引起释放率的急剧上升。1985年全球稻田的甲烷释放量估计为134±3lTg(1Tg=10^(12)g),其中12±26Tg和30±6Tg分别来自亚太地区和中国稻田。戴爱国 王明星 沈壬兴 H.Schütz W.Seiler H.Rennenberg 吴海宝 1991大气科学1991,15,1:18
2Association of farnesyl diphosphate synthase polymorphisms and response to alendronate treatment in Chinese postmenopausal women with osteoporosis显示文摘Liu Y Li M Zhou PR Xing XP Xia WB Xu L Liu H J Zhang ZL LiaoEY Chen DC Liu J Tao TZ Wu W 2014Chinese Medical Journal2014,,4:16
3The herbal compound geniposide rescues formaldehyde-induced apoptosis in N2a neuroblastoma cells显示文摘The herbal medicine Tong Luo Jiu Nao(TLJN)contains geniposide(GP)and ginsenoside Rg1 at a molar ratio of 10:1.Rg1 is the major component of another herbal medicine,panax notoginseng saponin(PNS).TLJN has been shown to strengthen brain function in humans,and in animals it improves learning and memory.We have previously shown that TLJN reduces amyloidogenic processing in Alzheimer’s disease(AD)mouse models.Together this suggests TLJN may be a potential treatment for patients with dementia.Because chronic damage of the central nervous system by formaldehyde(FA)has been presented as a risk factor for age-associated cognitive dysfunction,in the present study we investigated the protective effect of both TLJN and GP in neuron-like cells exposed to FA.FA-exposed murine N2a neuroblastoma cells were incubated with TLJN,its main ingredient GP,as well as PNS,to measure cell viability and morphology,the rate of apoptosis and expression of genes encoding Akt,FOXO3,Bcl2 and p53.The CCK-8 assay,cytoskeletal staining and flow cytometry were used to test cell viability,morphology and apoptosis,respectively.Fluorescent quantitative real-time PCR(qRT-PCR)was used to monitor changes in gene expression,and HPLC to determine the rate of FA clearance.Treatment of N2a cells with 0.09 mmol L?1 FA for 24 h significantly reduced cell viability,changed cell morphology and promoted apoptosis.Both TLJN and GP conferred neuroprotection to FA-treated N2a cells,whereas PNS,which had to be used at lower concentrations because of its toxicity,did not.Our data demonstrate that TLJN can rescue neuronal damage caused by FA and that its main ingredient,GP,has a major role in this efficacy.This presents purified GP as a drug or lead compound for the treatment of AD.CHEN JinYan SUN MengRu WANG XingHua LU Jing WEI Yan TAN Yan LIU Ying GTZ Jürgen HE RongQiao HUA Qian 2014Science China(Life Sciences)2014,57,4:15
4Effect of cholecystokinin and secretin on contractile activity of isolated gastric muscle strips in guinea pigs显示文摘AIM To study the effect of cholecystokinin-octapeptide(CCK-8)and secretin on contractileactivity of isolated gastric muscle strips inguinea pigs.METHODS Each isolated gastric muscle stripwas suspended in a tissue chamber containing5 mL Krebs solution constantly warmed by waterjacked at 37℃ and supplied with a mixed gas of95% O2 and 5% CO2 After incubating for lhunder 1 g tension,varied concentrations of CCK-8 and secretin were added respectively in thetissue chamber and the contractile response wasmeasured isometrically on ink-writing recorders.RESULTS CCK-8 could increase①all regionalcircular and longitudinal muscular tension at rest(fundus LM 19.7%±2.1%,P<0.01;fundus CM16.7%±2.2%,P<0.01;gastric body LM 16.8%±2.3%,P<0.01;body CM 12.7%±2.6%,P<0.01;antrum LM 12.3%±1.3%,P<0.01;antrum CM 16.7%±4.5%,P<0.01;pylous CM12.7%±5.0%,P<0.05);②contractilefrequencies of body LM,both LM and CM ofantrum and pylorus CM(5.1/min±0.2/min to5.6/min±0.2/min,5.9/min±0.2/min to 6.6/min±0.l/min,5.4/min±0.3/min to 6.3/min±0.4/rain,1.3/min±0.2/min to 2.3/min±0.3/min,respectively,P<0.05);③the mean contractileamplitude of antral circular muscle(58.6%±18.4%,P<0.05)and ④the motility index ofpylorus CM(145.0%±23.8%,P<0.01),butdecrease the mean contractile amplitude ofgastric body and antral LM(-10.3%±3.3%,-10.5%±4.6%,respectively,P<0.05).All the CCK-8 effects were not blocked by atropine orindomethacin.Secretin had no effect on gastricsmooth muscle activity.CONCLUSION CCK-8 possessed bothexcitatory and inhibitory action on contractileactivity of different regions of stomach in guineapigs.Its action was not mediated via cholinergicM receptor and endogenous prostagiandinreceptor,Li W Zheng TZ Qu SY 2000World Journal of Gastroenterology2000,6,1:13
5bFGF and TGFβ expression in rat kidneys after ischemic/reperfusional gut injury and its relationship with tissue repair显示文摘INTRODUCTION Intestinal isehemia/rePerfusion(I/R)oeeureommonly in eritieally 111 Patients.It 15 wellreeognized that gutl/R may eause tissue damageand dysfunetion of intestine,and indueeYang YH Fu XB Sun TZ Jiang LX Gu XM 2000World Journal of Gastroenterology2000,6,1:13
6Visualizing the microtubule-associated protein tau in the nucleus显示文摘Although tau is mainly known as an axonal microtubule-associated protein,many studies indicate that it is not restricted to this subcellular compartment.Assessing tau’s subcellular distribution,however,is not trivial as is evident from transgenic mouse studies.When human tau is over-expressed,it can be immunohistochemically localized to axons and the somatodendritic domain,modeling what is found in neurodegenerative diseases such as Alzheimer’s disease.Yet,in wild-type mice,despite its abundance,tau is difficult to visualize even in the axon.It is even more challenging to detect this protein in the nucleus,where tau has been proposed to protect DNA from damage.To establish a framework for future studies into tau’s nuclear functions,we compared several methods to visualize endogenous nuclear tau in cell lines and mouse brain.While depending on the fixation and permeabilization protocol,we were able to detect nuclear tau in SH-SY5Y human neuroblastoma cells,we failed to do so in N2a murine neuroblastoma cells.As a second method we used subcellular fractionation of mouse tissue and found that in the nucleus tau is mainly present in a hypophosphorylated form.When either full-length or truncated human tau was expressed,both accumulated in the cytoplasm,but were also found in the nuclear fraction.Because subcellular fractionation methods have their limitations,we finally isolated nuclei to probe for nuclear tau and found that the nuclei were free of cytoplasmic contamination.Together our analysis identifies several protocols for detecting tau in the nucleus where it is found in a less phosphorylated form.LU Jing LI Ting HE RongQiao BARTLETT Perry F GTZ Jürgen 2014Science China(Life Sciences)2014,57,4:11
7European evidence based consensus for endoscopy in inflammatory bowel disease显示文摘Vito Annese Marco Daperno Matthew D. Rutter Aurelien Amiot Peter Bossuyt James East Marc Ferrante Martin G?tz Konstantinos H. Katsanos Ralf Kie?lich Ingrid Ordás Alessandro Repici Bruno Rosa Shaji Sebastian Torsten Kucharzik Rami Eliakim 2013Journal of Crohn’s and Colitis2013,,12:7
8CT diagnosis of recurrence after pancreatic cancer:Is there a pattern?显示文摘AIM:To investigate predilection sites of recurrence of pancreatic cancer by computed tomography(CT)in follow-up after surgery. METHODS:Seventy seven patients with recurrence after pancreatic cancer surgery were retrospectively identified.The operative technique,R-status,T-stage and development of tumor markers were evaluated. Two radiologists analyzed CT scans with consensus readings.Location of local recurrence,lymph node recurrence and organ metastases were noted.Surgery and progression of findings on follow-up CT were con-sidered as reference standard. RESULTS:The mean follow-up interval was 3.9± 1.8 mo,with a mean relapse-free interval of 12.9± 10.4 mo.The predominant site of recurrence was local (65%),followed by lymph node(17%),liver metastasis (11%)and peritoneal carcinosis(7%).Local recurrence emerged at the superior mesenteric artery(n=28),the hepatic artery(n=8),in an area defined by the surrounding vessels:celiac trunk,portal vein,inferior vena cava(n=22),and in a space limited by the mesenteric artery,portal vein and inferior vena cava(n=17). Lymph node recurrence occurred in the mesenteric root and left lateral to the aorta.Recurrence was confirmed by surgery(n=22)and follow-up CT(n=55).Tumor markers[carbohydrate antigen 19-9(CA19-9),carcinoembryonic antigen(CEA)]increased in accordance with signs of recurrence in most cases(86%CA19-9;79.2% CEA). CONCLUSION:Specific changes of local and lymph node recurrence can be found in the course of the cardinal peripancreatic vessels.The superior mesenteric artery is the leading structure for recurrence.Tobias Heye Nicola Zausig Miriam Klauss Reinhard Singer Jens Werner Gtz Martin Richter Hans-Ulrich Kauczor Lars Grenacher 2011World Journal of Gastroenterology2011,17,9:6
92011年深圳世界大学生运动会体育中心设计显示文摘1绿化景观中的水晶体 广东深圳位于中国大陆南端,2011年第26届世界大学生夏季运动会在此成功举办。世界大学生夏季运动会就其参赛的运动员数目和比赛规模来看,是仅次于奥运会的第二大世界综合性体育盛会。斯特凡·胥茨(德StephanSchütz) 拉尔夫·齐伯(德Ralf Sieber) 2011建筑学报2011,,9:4
10Magnetic resonance angiography for the primary diagnosis of pulmonary embolism: A review from the international workshop for pulmonary functional imaging显示文摘Pulmonary contrast enhanced magnetic resonance angiography(CE-MRA) is useful for the primary diagnosis of pulmonary embolism(PE). Many sites have chosen not to use CE-MRA as a first line of diagnostic tool for PE because of the speed and higher efficacy of computerized tomographic angiography(CTA). In this review, we discuss the strengths and weaknesses of CEMRA and the appropriate imaging scenarios for the primary diagnosis of PE derived from our unique multiinstitutional experience in this area. The optimal patient for this test has a low to intermediate suspicion for PE based on clinical decision rules. Patients in extremis are not candidates for this test. Younger women(< 35 years of age) and patients with iodinated contrast allergies are best served by using this modality We discuss the history of the use of this test, recent technical innovations, artifacts, direct and indirect findings for PE, ancillary findings, and the effectiveness(patient outcomes) of CE-MRA for the exclusion of PE. Current outcomes data shows that CE-MRA and NM V/Q scans are effective alternative tests to CTA for the primary diagnosis of PE.Nanae Tsuchiya Edwin JR van Beek Yoshiharu Ohno Hiroto Hatabu Hans-Ulrich Kauczor Andrew Swift Jens Vogel-Claussen Jürgen Biederer James Wild Mark O Wielpütz Mark L Schiebler 2018World Journal of Radiology2018,10,6:4
11Modulating effects of acyl-CoA synthetase 5-derived mitochondrial Wnt2B palmitoylation on intestinal Wnt activity显示文摘AIM:To investigate the role of acyl-CoA synthetase 5(ACSL5)activity in Wnt signaling in intestinal surface epithelia.METHODS:Several cell lines were used to investigate the ACSL5-dependent expression and synthesis of Wnt2B,a mitochondrially expressed protein of the Wnt signaling family.Wnt activity was functionally assessed with a luciferase reporter assay.ACSL5-related biochemical Wnt2B modifications were investigatedwith a modified acyl-exchange assay.The findings from the cell culture models were verified using an Apcmin/+mouse model as well as normal and neoplastic diseased human intestinal tissues.RESULTS:In the presence of ACSL5,Wnt2B was unable to translocate into the nucleus and was enriched in mitochondria,which was paralleled by a significant decrease in Wnt activity.ACSL5-dependent S-palmitoylation of Wnt2B was identified as a molecular reason for mitochondrial Wnt2B accumulation.In cell culture systems,a strong relation of ACSL5 expression,Wnt2B palmitoylation,and degree of malignancy were found.Using normal mucosa,the association of ACSL5 and Wnt2B was seen,but in intestinal neoplasias the mechanism was only rudimentarily observed.CONCLUSION:ACSL5 mediates antiproliferative activities via Wnt2B palmitoylation with diminished Wnt activity.The molecular pathway is probably relevant for intestinal homeostasis,overwhelmed by other pathways in carcinogenesis.Christina Klaus Ursula Schneider Christian Hedberg Anke K Schütz Jürgen Bernhagen Herbert Waldmann Nikolaus Gassler Elke Kaemmerer 2014World Journal of Gastroenterology2014,20,40:4
12新型两级增压BMW6缸共轨直喷式柴油机显示文摘从2004年秋季开始,BMW公司在其顶级3.0L直列6缸共轨直喷式柴油机上,在世界轿车柴油机领域内首次采用了两级废气涡轮增压。这种技术除了能将比功率提高到67kW/L之外,还可将可用转速范围从4000r/min扩展到5000r/min,从而能达到迄今为止只有8缸柴油机才能达到的行驶功率,而且MVEG行驶循环燃油耗只有8.0L/100km。Steinparzer F 2006国外内燃机2006,38,1:4
13Corneal stem cells and tissue engineering: Current advances and future perspectives显示文摘Major advances are currently being made in regenerative medicine for cornea. Stem cell-based therapies represent a novel strategy that may substitute conventional corneal transplantation, albeit there aremany challenges ahead given the singularities of each cellular layer of the cornea. This review recapitulates the current data on corneal epithelial stem cells, corneal stromal stem cells and corneal endothelial cell progenitors. Corneal limbal autografts containing epithelial stem cells have been transplanted in humans for more than 20 years with great successful rates, and researchers now focus on ex vivo cultures and other cell lineages to transplant to the ocular surface. A small population of cells in the corneal endothelium was recently reported to have self-renewal capacity, although they do not proliferate in vivo. Two main obstacles have hindered endothelial cell transplantation to date: culture protocols and cell delivery methods to the posterior cornea in vivo. Human corneal stromal stem cells have been identified shortly after the recognition of precursors of endothelial cells. Stromal stem cells may have the potential to provide a direct cell-based therapeutic approach when injected to corneal scars. Furthermore, they exhibit the ability to deposit organized connective tissue in vitro and may be useful in corneal stroma engineering in the future. Recent advances and future perspectives in the field are discussed.Aline Lütz de Araujo JoséAlvaro Pereira Gomes 2015World Journal of Stem Cells2015,7,5:4
14深圳宝安体育场设计显示文摘深圳宝体育场是一座能容纳4万人的田径体育场,在2011年世界大学生运动会中作为足球赛场投入使用。场馆的设计灵感来源于具有华南地区风情的竹林场景,在重现地域特色的同时,"竹林"还构成了看台以及大跨度屋面的结构支撑系统。建筑的外表皮将建筑立面、斯特凡·胥茨(德StephanSchütz) 沈大伟(德David Schenke) 2011建筑学报2011,,9:3
15Counting and measuring particles sized from soot to pollen显示文摘For number concentration measurements of superfine particles a condensation nucleus counter (CNC) is frequently used. The combination of a new CNC module with a white light aerosol spectrometer and a passive collector makes possible accurate time-resolved determination of particle number within the overall size range of 10 nm to 40 m and at concentrations up to 105 particles/cm3. With the aerosol spectrometer a high time-resolved particle size determination is also possible in the size range of 0.3–40 m up to the same high number concentrations of 105 particles/cm3.Martin Schmidt Sven Schütz Leander Mlter 2007China Particuology2007,5,5:3
16Improved guided bone regeneration by combined application of unmodified, fresh autologous adipose derived regenerative cells and plasma rich in growth factors:A first-in-human case report and literature review显示文摘BACKGROUND Novel strategies are needed for improving guided bone regeneration(GBR) in oral surgery prior to implant placement, particularly in maxillary sinus augmentation(GBR-MSA) and in lateral alveolar ridge augmentation(LRA). This study tested the hypothesis that the combination of freshly isolated, unmodified autologous adipose-derived regenerative cells(UA-ADRCs), fraction 2 of plasma rich in growth factors(PRGF-2) and an osteoinductive scaffold(OIS)(UAADRC/PRGF-2/OIS) is superior to the combination of PRGF-2 and the same OIS alone(PRGF-2/OIS) in GBR-MSA/LRA.CASE SUMMARY A 79-year-old patient was treated with a bilateral external sinus lift procedure as well as a bilateral lateral alveolar ridge augmentation. GBR-MSA/LRA was performed with UA-ADRC/PRGF-2/OIS on the right side, and with PRGF-2/OIS on the left side. Biopsies were collected at 6 wk and 34 wk after GBRMSA/LRA. At the latter time point implants were placed. Radiographs(32 mo follow-up time) demonstrated excellent bone healing. No radiological or histological signs of inflammation were observed. Detailed histologic,histomorphometric, and immunohistochemical analysis of the biopsies evidenced that UA-ADRC/PRGF-2/OIS resulted in better and faster bone regeneration than PRGF-2/OIS.CONCLUSION GBR-MSA with UA-ADRCs, PRGF-2, and an OIS shows effectiveness without adverse effects.?nder Solakoglu Werner G?tz Maren C Kiessling Christopher Alt Christoph Schmitz Eckhard U Alt 2019World Journal of Stem Cells2019,11,2:3
17土壤温度对水稻田甲烷排放的影响显示文摘本文探讨了CH_4排放速率的日变化与不同土壤深度温度之间的相关关系。利用数据计算了CH_4排放的表面活性能,并描述甲烷排放的季节性行为。将田间条件下测定的甲烷排放的表面活性能与在缺氧水稻土样培养中和甲烷菌纯培养中测得的表面活性能,加以比较,结果表明,甲烷形成过程的温度特性仅仅在生长早期能解释CH_4排放的日变化模式;而夏天和秋天甲烷排放大幅度日变化,除土壤温度日变化因素外,还需要其它因素来解释。H.Schütz W.Seiler R.Conrad 杜道灯 1992国外农业环境保护1992,,4:3
18Embryo-mediated genome editing for accelerated genetic improvement of livestock显示文摘Selecting beneficial DNA variants is the main goal of animal breeding.However,this process is inherently inefficient because each animal only carries a fraction of all desirable variants.Genome editing technology with its ability to directly introduce beneficial sequence variants offers new opportunities to modernize animal breeding by overcoming this biological limitation and accelerating genetic gains.To realize rapid genetic gain,precise edits need to be introduced into genomicallyselected embryos,which minimizes the genetic lag.However,embryo-mediated precision editing by homology-directed repair(HDR)mechanisms is currently an inefficient process that often produces mosaic embryos and greatly limits the numbers of available edited embryos.This review provides a summary of genome editing in bovine embryos and proposes an embryo-mediated accelerated breeding scheme that overcomes the present efficiency limitations of HDR editing in bovine embryos.It integrates embryo-based genomic selection with precise multi-editing and uses embryonic cloning with elite edited blastomeres or embryonic pluripotent stem cells to resolve mosaicism,enable multiplex editing and multiply rare elite genotypes.Such a breeding strategy would enable a more targeted,accelerated approach for livestock improvement that allows stacking of beneficial variants,even including novel traits from outside the breeding population,in the most recent elite genetic background,essentially within a single generation.Zachariah MCLEAN Björn OBACK Götz LAIBLE 2020Frontiers of Agricultural Science and Engineering2020,7,2:2
19儿童哮喘的诊断和治疗:PRACTALL共识报告(待续)显示文摘在多数工业化国家,哮喘是儿童慢性病中居于首位的疾病。然而,目前儿童哮喘的某些特殊方面,包括治疗策略的证据仍然有限,还没有最新的国际儿童哮喘指南。因此,欧洲变态反应及临床免疫学会(European Academy of Allergology and Clinical Immunology,EAACI)和美国变态反应、哮喘及免疫学会(American Academy of Allergy,Asthma and Immunology,AAAAI)组成的专家组对此问题进行讨论后达成共识,并以此共识作为欧洲和北美的临床操作指南。该协议在某些策略上做出推荐,包括药物治疗、变应原以及诱因的避免和哮喘教育。该报告是PRACTALL共识报告的一部分,并被上述学会采用。L.B.Bacharier A.Boner K.-H.Carlsen P.A.Eigenmann T.Frischer M.Gtz P.J.Helms J.Hunt N.Papadopoulos T.Platts-Mills P.Pohunek F.E.R.Simons E.Valovirta U.Wahn J.Wildhaber 青曼丽 尹佳 2009中华临床免疫和变态反应杂志2009,3,3:2
20Weight gain in long-term survivors of kidney or liver transplantation—Another paradigm of sarcopenic obesity?显示文摘Tatjana Schütz Heike Hudjetz Anne-Eve Roske Cornelia Katzorke Georg Kreymann Klemens Budde Lutz Fritsche Hans-Hellmut Neumayer Herbert Lochs Mathias Plauth 2012Nutrition2012,,4:2
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