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Allometric relationships between primary size measures and sapwood area for six common tree species in snow-dependent ecosystems in the Southwest United States

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Journal of Forestry Research 2020年第6期31卷 2171-2180页

作者： Bhaskar Mitra Shirley A.Papuga Mross Alexander Tyson Lee Swetnam nate Abramson School of natural Resources and Environment University of ArizonaTucsonAZ 85721USA Department of Geology Wayne State UniversityDetroitMI 48202USA Laboratory of Tree-Ring Research University of ArizonaTucsonAZ 85721USA BIO5 Institute University of ArizonaTucsonAZ 85721USA Department of Hydrology and Water Resources University of ArizonaTucsonAZ 85721USA

High-elevation,snow-dependent,semiarid ecosystems across southwestern United States are expected to be vulnerable to climate change,including drought and fi re,with implications for various aspects of the water *** that end,much less is known about the dynamics of transpiration,an important component of the water cycle across this *** the individual-tree scale,transpiration is estimated by scaling mean sap fl ux density by the hydroactive sapwood area(SA).SA also remains a key factor in eff ectively scaling individual tree water-use to stand *** across large spatial scales is normally established by relating SA of a few trees to primary size measures,e.g.,diameter at breast height(DBH),tree height(H),or canopy diameter(CD).Considering the importance of SA in scaling transpiration,the primary objective of this study was therefore to establish six species-specifi c(aspen,maple,white fi r,ponderosa pine,Douglas fi r,Englemann spruce)allometric relationships between SA and three primary size measures(DBH,CD,or H)across two high-elevation,snow-dependent,semiarid ecosystems in new Mexico and *** on multiple statistical criteria(coeffi cient of determination,index of agreement,nash–Sutcliff e effi-ciency)and ease of measurement in the forest,we identifi ed DBH as the primary independent variable for estimating SA across all *** on group regression analysis,we found allometric relationships to be signifi cantly(pnt for the same species(ponderosa pine,Douglas-fi r)across diff erent ***,our allometric relationships provide a valuable database for estimating transpiration at diff erent spatial scales from sap fl ow data in some of our most vulnerable ecosystems.

关键词： Allometry Diameter at breast height Mountain ecosystem Sapwood area Southwestern USA

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Performance of the point-of-care circulating cathodic antigen test in the diagnosis of schistosomiasis japonica in a human cohort from northern Samar, the Philippines

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Infectious Diseases of Poverty 2021年第5期10卷 40-51页

作者： Pengfei Cai Yi Mu Kosala G.Weerakoon Remigio M.Olveda Allen G.ross Donald P.McManus Molecular Parasitology Laboratory Infectious Diseases ProgramQIMR Berghofer Medical Research InstituteBrisbaneAustralia Department of Health Research Institute for Tropical MedicineManilaPhilippines icddr bDhakaBangladesh Present Address:Department of Parasitology Faculty of Medicine and Allied SciencesRajarata University of Sri LankaSaliyapuraSri Lanka

Background:Zoonotic schistosomiasis,caused by Schistosoma japonicum,remains a major public health problem in the *** study aimed to evaluate the commercially available rapid diagnostic point-of-care circulating cathodic antigen(POC-CCA)test in detecting individuals infected with *** in a human cohort from an endemic area for schistosomiasis japonica in the ***:Clinical samples were collectedin 18 barangays endemic for *** infection in Laoang and Palapag municipalities,northern Samar,the Philippines,in *** presence of CCA in flter-concentrated urine samples(n=412)was evaluated using the commercial kits and the results were converted to images,which were further analyzed by ImageJ software to calculate R *** diagnostic performance of the immunochromatographic POCCCA test was compared using the Kato-Katz(KK)procedure,in-house enzyme-linked immunosorbent assays(ELISAs)and droplet digital(dd)PCR assays as ***:The POC-CCA test was able to detect ***-infected individuals in the cohort with an eggs per gram of faeces(EPG)more than or equal to 10 with sensitivity/specifcity values of 63.3%/93.3%.However,the assay showed an inability to diagnose schistosomiasis japonica infections in all cohort KK-positive individuals,of which the majority had an extremely low egg burden(EPG:1–9).The prevalence of *** infection in the total cohort determined by the POC-CCA test was 12.4%,only half of that determined by the KK method(26.2%).When compared with the ELISAs and ddPCR assays as a reference,the POC-CCA assay was further shown to be a test with low ***,the assay exhibited signifcant positive correlations with egg burden determined by the KK technique and the target gene copy number index values determined by the ddPCR assays within the entire ***:By using in silico image analysis,the POC-CCA cassette test could be converted to a quantitative assay to avoid reader

关键词： Schistosomiasis Schistosoma japonicum Kato-Katz POC-CCA ELISA Droplet digital PCR

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Better Than You Think—Appropriate Use of Implantable Cardioverter-Defi brillators at a Single Academic Center:A Retrospective Review

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Cardiovascular Innovations and Applications 2021年第2期5卷 235-243页

作者： nikhil H.Shah Steven J.ross Steve A.noutong njapo Justin Merritt Andrew Kolarich Michael Kaufmann William M.Miles David E.Winchester Thomas A.Burkart Matthew McKillop UF Division of Cardiovascular Medicine 1600 SW Archer RdPO Box 100277GainesvilleFL 32610USA UVA Division of Cardiovascular Medicine PO Box *** Lee St.CharlottesvilleVA 22908-0158USA The Johns Hopkins Hospital Department of Radiology 601 N Caroline StBaltimore 21287USA The Heart Center 930 Franklin Street SEHuntsvilleAL358015USA Intermountain Medical Center 1380 E Medical Center DrSte 1500St.GeorgeUT 847906USA Carolina Cardiology Consultants Prisma Health1005 Grove RoadGreenvilleSC 29605USA

Background:Implantable cardioverter-defi brillators(ICDs)can be life-saving devices,although they are expensive and may cause *** 2013,several professional societies published joint appropriate use criteria(AUC)assessing indications for ICD *** evaluating the clinical application of AUC are *** registry-based studies estimated that 22.5%of primary prevention ICD implantations were“non-evidence-based”*** the basis of AUC,we aimed to determine the prevalence of“rarely appropriate”ICD implantation at our institution for comparison with previous ***:We reviewed 286 patients who underwent ICD implantation between 2013 and *** of each ICD implantation was assessed by independent review and rated on the basis of ***:Of 286 ICD implantations,two independent reviewers found that 89.5%and 89.2%,respectively,were appropriate,5.6%and 7.3%may be appropriate,and 1.8%and 2.1%were rarely *** AUC indication was found for 3.5%and 3.4%of ICD implantations,*** prevention ICD implantations were more likely rarely appropriate(2.6%vs.1.2%and 3.6%vs.1.1%)or unrated(6.0%vs.1.2%and 2.7%vs.0.6%).The reviewers found 3.5%and 3.4%of ICD implantations,respectively,were non-evidence-based *** difference in rates between reviewers was not statistically signifi ***:Compared with prior reports,our prevalence of rarely appropriate ICD implantation was very *** high appropriate use rate could be explained by the fact that AUC are based on current clinical *** AUC could benefi t from additional secondary prevention *** importantly,clinical judgement and individualized care should determine which patients receive ICDs irrespective of guidelines or criteria.

关键词： Appropriate use appropriate use criteria implantable cardioverter-defi brillator

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信号平均法对扫频测量的动态量程、分辨力及精度的改善

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光纤与电缆及其应用技术 1978年第3期 48-57页

作者： R.W.Anderson J.A.Doub W.A.ross C.n.Taubman 高学民

噪声——基本问题在最近十年内已有几种仪器(包括使用取样技术、谐波混频和其它宽带技术)用作扫频(或手动扫描类型的)测量。在大多数情况下,这些仪器的性能相当于或者超过了以前原有的窄带设备。

关键词：平均法噪声仪网络分析仪分布参数测量设备反射系数分析仪器方框图测试设备试验设备时域反射计波形分辨力随机噪声方程扫频反射特性

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An external quantum efficiency of>20%from solutionprocessed poly(dendrimer)organic light-emitting diodes

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npj Flexible Electronics 2018年第1期2卷 213-218页

作者： Fatemeh Maasoumi ross D.Jansen-van Vuuren Paul E.Shaw Emma V.Puttock Ravi Chandra Raju nagiri Jake A.McEwan Mark Bown Jenny L.O’Connell Christopher J.Dunn Paul L.Burn Ebinazar B.namdas Centre for Organic Photonics&Electronics(COPE) School of Chemistry&Molecular Biosciences and School of Mathematics&PhysicsUniversity of QueenslandSt.LuciaQLD 4072Australia CSIRO Manufacturing Research WayClaytonVIC 3168Australia

Controlling the orientation of the emissive dipole has led to a renaissance of organic light-emitting diode(OLED)research,with external quantum efficiencies(EQEs)of>30%being reported for phosphorescent *** highly efficient OLEDs are generally manufactured using evaporative methods and are comprised of small-molecule heteroleptic phosphorescent iridium(III)complexes blended with a host and additional layers to balance charge injection and *** area OLEDs for lighting and display applications would benefit from low-cost solution processing,provided that high EQEs could be ***,we show that poly(dendrimer)s consisting of a non-conjugated polymer backbone with iridium(III)complexes forming the cores of firstgeneration dendrimer side chains can be co-deposited with a host by solution processing to give highly efficient *** bilayer devices comprising the emissive layer and an electron transport layer gave an EQE of>20%at luminances of up to≈300 cd/m^(2),showing that polymer engineering can enable alignment of the emissive dipole of solution-processed phosphorescent materials.

关键词： quantum dipole light

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Does deep sedation with propofol affect adenoma detection rates in average risk screening colonoscopy exams?

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World Journal of Gastrointestinal Endoscopy 2017年第4期9卷 177-182页

作者： Selvi Thirumurthi Gottumukkala S Raju Mala Pande Joseph Ruiz Richard Carlson Katherine B Hagan Jeffrey H Lee William A ross Department of Gastroen-terology Hepatology and NutritionUniversity of Texas MD Anderson Cancer Center Department of Anesthesiology and Peri Operative Medicine University of Texas MD Anderson Cancer Center

To determine the effect of sedation with propofol on adenoma detection rate (ADR) and cecal intubation rates (CIR) in average risk screening colonoscopies compared to moderate sedation. METHODSWe conducted a retrospective chart review of 2604 first-time average risk screening colonoscopies performed at MD Anderson Cancer Center from 2010-2013. ADR and CIR were calculated in each sedation group. Multivariable regression analysis was performed to adjust for potential confounders of age and body mass index (BMI). RESULTSOne-third of the exams were done with propofol (n = 874). Overall ADR in the propofol group was significantly higher than moderate sedation (46.3% vs 41.2%, P = 0.01). After adjustment for age and BMI differences, ADR was similar between the groups. CIR was 99% for all exams. The mean cecal insertion time was shorter among propofol patients (6.9 min vs 8.2 min; P nCLUSIOnDeep sedation with propofol for screening colonoscopy did not significantly improve ADR or CIR in our population of average risk patients. While propofol may allow for safer sedation in certain patients (e.g., with sleep apnea), the overall effect on colonoscopy quality metrics is not significant. Given its increased cost, propofol should be used judiciously and without the implicit expectation of a higher quality screening exam.

关键词： Sedation Propofol Adenoma detection rate Cecal intubation rate Colonoscopy Quality metrics

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黄曲霉毒素与乙型肝炎病毒对肝癌发生协同作用的前瞻性研究

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肿瘤 1992年第5期12卷 193-196页

作者：袁剑敏 R.K.ross 钱耕荪 M.C.Yu 屠基陶 G.n.Wogan 王学励张玉兰 J.D.Groopman B.E.Henderson 高玉堂上海市肿瘤研究所美国南加州大学美国麻省理工学院美国约翰斯.霍普金斯大学

我们利用最近建立的检测尿液黄曲霉毒素(AF)B_1及其代谢产物(AFP_1、AFM_1)和DnA加成物(AFB_1-n^7-Guanine)的方法,分别检测上海市区队列研究中发现的22例肝癌及其140名对照尿液AFB_1、AFP_1、AFM_1和DnA加成物,同时测定血清乙型肝炎病... 详细信息

我们利用最近建立的检测尿液黄曲霉毒素(AF)B_1及其代谢产物(AFP_1、AFM_1)和DnA加成物(AFB_1-n^7-Guanine)的方法,分别检测上海市区队列研究中发现的22例肝癌及其140名对照尿液AFB_1、AFP_1、AFM_1和DnA加成物,同时测定血清乙型肝炎病毒表面抗原(HBsAg)。肝癌病例尿液AF检出率(59％)比对照高(38％)。DnA加成物阳性者肝癌相对危险度估计值(OR)为4.9。尽管AFP_1(OR=6.1)、AFM_1(OR=3.0)和AFB_1(OR=2.3)均与OR显著或接近显著增高有关,但伴随DnA加成物阴性时,AFP_1、AFM_1或AFB_1阳性并不显著增高OR。本文还发现HBsAg阴性者尿AF阳性OR仅增高1倍,而HBsAg阳性者伴尿AF阳性使OR增高11.5倍。以条件Logistic回归模型调整HBsAg、受教育程度、吸烟和重度饮酒等因素后,尿液检出AF的OR为3.8(95％CI:1.2～12.2)。

关键词：黄曲霉毒素乙型肝炎病毒肝肿瘤

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神经生长因子诱导分化的神经母细胞瘤细胞中癌基...

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中华病理学杂志 1991年第1期20卷 7-10页

作者：陈杰 ross,AH 100730，北京协和医院病理科美国麻省伍斯特实验生物学研究所

神经母细胞瘤可能因细胞分化过程中受到阻滞所致。我们用神经生长因子(nGF)处理神经母细胞瘤细胞,某些细胞系可在nGF的作用下分化成神经元样的细胞。为进一步研究其分化过程中癌基因的调控变化,我们用几种癌基因DnA探针与瘤细胞RnA进行... 详细信息

神经母细胞瘤可能因细胞分化过程中受到阻滞所致。我们用神经生长因子(nGF)处理神经母细胞瘤细胞,某些细胞系可在nGF的作用下分化成神经元样的细胞。为进一步研究其分化过程中癌基因的调控变化,我们用几种癌基因DnA探针与瘤细胞RnA进行杂交,发现nGF使细胞分化的同时,亦使c-myc癌基因表达下降。而K-ras,n-ras在nGF处理后,与对照组相比,没有发现明显的变化。结果表明: c-myc癌基因或其产物可能阻滞神经母细胞瘤细胞的分化过程,而nGF可能通过减少c-myc的表达而促进细胞的分化。

关键词：神经母细胞瘤神经生长因子基因

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成人鸟氨酸转移酶缺乏伴持续性脑谷氨酸盐代谢异常

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国际医学放射学杂志 2009年第6期 578-579页

作者： A.L.Gropman n.Sailasuta K.C.Harris O.Abulseoud B.D.ross 周淑琴 Department of neurology Children's National Medical CenterWashingtonDC

目的利用碳13C-MRS分析不完全性鸟氨酸转移酶缺乏(OTCD)病人脑谷氨酸盐的代谢率。材料与方法本研究经伦理委员会批准,遵循HIPAA法案,并获得受试者知情同意。采用1.5T MR设备对10例身体状况稳定的受试者例OTCD病人,4名健康对照者)进行MR

关键词：鸟氨酸转移酶感兴趣区谷氨酸盐

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Development of a pH-Stat method to measure in vitro degree of protein hydrolysis using enzymes from pyloric caeca of Atlantic cod(Gadus morhua L.)

Development of a pH-Stat method to measure in vitro degree o...

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The 14th International Symposium on Fish nutrition & Feeding

作者： Sean M.Tibbetts Joyce E.Milley neil W.ross Santosh P.Lall national Research Council of Canada Institute for Marine Biosciences1411 Oxford StreetHalifaxNova ScotiaCanadaB3H 3Z1 national Research Council of Canada Industrial Research Assistance Program1411 Oxford StreetHalifaxNova ScotiaCanadaB3H 3Z1

Ingredients used in aquafeeds can vary considerably in protein quality which is a concern for feed *** and reproducible methods to screen ingredients are *** vitro methods,which do not use large numbers of fish and yield data quickly,offer an attractive complement to traditional in vivo methods and may be more suitable for research and industrial *** results obtained using certain in vitro methods for finfish and shellfish are promising,reproducibility of results has been *** modifications are necessary to improve existing methods and to standardize the *** method described here involves extraction and partial purification of an enzyme solution from pyloric caeca of Atlantic *** of the two major proteolytic enzymes(trypsin and chymotrypsin) significantly(Pncreased by 4 to 12-fold throughout the extraction and partial purification steps indicating that the procedure appears suitable for use in pH-Stat *** to application of this method to test the digestibility of feed ingredients,a study was conducted to determine the most suitable substrate/enzyme(S/E) ratio to use in subsequent degree of hydrolysis(DH) assays. This trial used a standard purified protein source(vitamin-free casein,IFn 5-01-162) with four S/E ratios(0.25,0.50,0.75 and 1.00 mg n/mL) and a true blank for *** observation of the curve data combined with best-fit curve modelling with minimum R of 0.99 resulted in maximum DH values in a tight range(25.3-27.5%) with no significant differences between S/E ratios *** assay duration time and volume of naOH titrant required to achieve maximum DH was,however,highly influenced by S/E ratio ranging fromnd21 *** the 10-hour assay,the casein DH curve of the 0.50 mg n/mL ratio displayed a rapid increase and reached a clear plateau at maximum DH of 27%.This maximum period was also achieved within a moderate assay duration(6-8 hours)

关键词： Gadoids Atlantic cod Protein Digestibility In vitro Feed ingredients

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