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The resistance of Spruce to barkbeetles.

, : The resistance of Spruce to barkbeetles.. Allg. Forst- u. Jagdztg, 127: 7; 8/9, 129-45; 168-87

A discussion of the factors favouring successful attack, chiefly on the basis of the author's own (published or unpublished) observations and experiments. Studies of osmotic values of phloem saps showed that these varied with the season, the weather, the site, and the part of the tree, normal summer values being ca. 12 atm. below the crown and 7 atm. at the roots. Values tend to decrease in May and June in the lowlands and in July in the mountains, and to increase in the autumn.


Other references

Senba M.; Kawai K., 1989: Iron accumulation and presence of hepatitis b core antigen in hepatocellular carcinoma in hemochromatotic liver. An autopsy case of hepatocellular carcinoma combined with hemochromatosis and hepatic cirrhosis were studied with iron accumulation and hepatitis B virus. Iron accumulation was confirmed by Prussian blue reaction. A positive reaction for hepatitis...

Schiffmann S.N.; Mailleux P.; Przedborski S.; Halleux P.; Lotstra F.; Vanderhaeghen J J., 1989: Cholecystokinin distribution in the human striatum and related subcortical structures. The distribution of cholecystokinin immunoreactive nerve cell bodies and processes is reported in the human striatum and adjacent structures such as the clausturm, the pallidum, the bed nucleus of the stria terminalis and the substantia innominata...

Swan, J.; Sorrell, E.; MacVicar, B.; Durham, R.; Matthews, K., 2004: "Coping with depression": an open study of the efficacy of a group psychoeducational intervention in chronic, treatment-refractory depression. Background: Failure to respond to antidepressant medication represents a major clinical problem. Few therapeutic interventions have been shown to benefit such individuals. Method: Patients attended a 12-session psychoeducational programme over a p...

Ko, M-Tse.; Hwang, C-Feng.; Kao, Y-Fen.; Lui, C-Chung.; Huang, C-Cheng.; Peng, J-Ping., 2006: Cholesterol granuloma of the maxillary sinus presenting as sinonasal polyp. Cholesterol granuloma is usually found in chronic middle ear diseases. However, it rarely occurs in the sinonasal regions and only a few case reports can be found in the literature. The etiology of sinonasal cholesterol granuloma is not yet known,...

Safarik, L., 1963: Titration In Nonaqueous Solvents In Pharmaceutical Analysis. Ix. Microdetermination Of Alkaloids In Medicinal Forms. (Preliminary Report). Ceskoslovenska Farmacie 12: 363-364

Medvedeva, S.A.; Aleksandrova, G.P.; Kanitskaya, L.V.; D' yachkova, S.G.; Babkin, V.A., 1995: Chemical transformation of lignin during the biodegradation and organosolv pulping of deciduous wood. The lignins from the liquors in the organosolv pulping of aspen [Populus tremula] wood exposed to wood-destroying fungi were investigated using quantitative 1H and 13C NMR spectroscopy and exclusion liquid chromatography. It has been shown that th...

Yarbrough, L.R.; Hurwitz, J., 1974: The isolation of subunits of dna dependent rna polymerase of escherichia coli. Journal of Biological Chemistry 249(17): 5400-5404

Kostuch, M.; Klatka, J.; Semczuk, A.; Wojcierowski, J.; Kulczycki, L.; Oleszczuk, J., 2005: Analysis of most common CFTR mutations in patients affected by nasal polyps. Nasal polyps, a chronic inflammatory disease occurring in the nose and para-nasal sinuses, result from several different causes, including cystic fibrosis (CF). Forty-four patients affected by nasal polyps were admitted to the Department of Otolar...

Pagot, J., 1977: Tropical agricultural research in Africa. This paper describes the development of agricultural research in tropical Africa from colonial times onwards, and discusses some of the institutions concerned, such as CEEMAT and ORSTOM.

Thornburgh, N., 2007: Feels like teen spirit. Time 166(6): 60-62