Báo cáo khoa học: "Tree water relations and climatic variations at the alpine timberline: seasonal changes of sap flux and xylem water potential in Larix decidua Miller, Picea abies (L ) Karst and Pinus cembra L " ppt

... A., Water relations of adult Norway spruce (Picea abies (L. ) Karst .) under soil drought in the Vosge mountains: water potentials, stomatal con- ductance and transpiration, ... explain why the timberline occurs in different climatic regions. In continental alpine timberlines (e.g. Austrian Alps) an incomplete devel- opment of...

Ngày tải lên: 09/08/2014, 04:20

... evaluation of the effect of syntac- tic and structural constraints at multiple levels of granularity on the robustness of sentence com- pression at varying compression rates. Our eval- uation ... maximum-entropy- inspired parser. In Proc. of NAACL. James Clarke and Mirella Lapata, 2007. Modelling Compression With Discourse Constraints. In Proc. of EMNLP-CoNLL....

Ngày tải lên: 31/03/2014, 00:20

... Gellerich NF, Holtz J: Apoptosis-modulating interaction of the neuregulin/erbb pathway with anthracyclines in regulating bcl-xs and bcl-xl in cardiomyocytes. Journal of molecular and cellular ... cytosol, followed b y activation of caspapse-3 and finally lead to cell apopt osis. Moreover, down-regu- lation of IAP family members (Livin and Survivin) is likely to be involv...

Ngày tải lên: 10/08/2014, 10:21

... HOS-CD4-CCR5 cells. (B) Pseudotypes that infected HOS cells very little or not at all in the absence of RC-101. (C) Pseudotypes that caused infection in a manner similar to the wild-type JR.FL molecular clone. ... RC-101, and then analyzed the HIV-1 sequence database at Los Alamos National Laboratory (New Mexico, USA) for residue variations in the heptad repeat 1 (HR...

Ngày tải lên: 07/03/2014, 05:20

... accumulation of ELOA labelled with Alexa Fluor (shown in bright green) in the vicinity of live PC12 cells up to 58 min of coincubation. At 59 min, the cell wall was ruptured, allowing ELOA to ... penicillin (100 unitsÆmL )1 ) and streptomycin (100 lgÆmL )1 ). Average cell density at plating was $ 1 · 10 5 cellsÆcm )2 in 300 lL medium. The cells were obs...

Ngày tải lên: 30/03/2014, 01:20

... compare the fit of models to the data. In this test, logL llu and logL H. are the maximum log-likelihoods under the null (Ho) or alternative (Ha) hypothesis. Therefore, ... of 0.12 in the foundation population to 0.06 in the SR line and 0.91 ini the SS line. Maximum likelihood (ML) estimates of genotype frequencies, shown in...

Ngày tải lên: 09/08/2014, 22:22

... collecting samples at shorter time intervals. Also, the survival of the released flies could be studied in an enclosed population. Presently available observations illustrate the ... in the natural population. Another sample was taken at the end of release. During the following weeks, new bananas were regularly added in order to s...

Ngày tải lên: 09/08/2014, 22:23

Ngày tải lên: 23/03/2014, 16:20

... species. All plots were pooled to calculate monthly averages of cover. We followed the nomenclature of Schmeil and Fitschen [21]. In three plots (0.25 m 2) per site all living ... pre-dawn water potential fell from above -0.5 MPa in spring to below -1.0 MPa at the end of July. In Neuglobsow trees reached the lowest needle wa...

Ngày tải lên: 08/08/2014, 14:21

... functions (lines) of the indices of the ring width (RW), latewood width (LW), percent latewood (LW %), and maximum density (MXD) chronologies for low- and high-elevation sub- alpine fir on the mean monthly ... and dry spring weather in low-elevation. Low summer temperature limited ring width in high-elevation and maximum latewood density and latewood width in low...

Ngày tải lên: 08/08/2014, 14:21