全文获取类型
收费全文 | 177篇 |
免费 | 1篇 |
专业分类
林业 | 2篇 |
农学 | 2篇 |
12篇 | |
综合类 | 1篇 |
农作物 | 17篇 |
畜牧兽医 | 24篇 |
园艺 | 1篇 |
植物保护 | 119篇 |
出版年
2016年 | 5篇 |
2014年 | 2篇 |
2012年 | 4篇 |
2011年 | 5篇 |
2010年 | 5篇 |
2008年 | 3篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 2篇 |
2001年 | 2篇 |
1999年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1984年 | 1篇 |
1981年 | 3篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1971年 | 1篇 |
1969年 | 2篇 |
1967年 | 2篇 |
1963年 | 1篇 |
1960年 | 2篇 |
1959年 | 1篇 |
1958年 | 1篇 |
1957年 | 1篇 |
1956年 | 5篇 |
1954年 | 14篇 |
1953年 | 13篇 |
1948年 | 7篇 |
1947年 | 7篇 |
1946年 | 7篇 |
1945年 | 7篇 |
1944年 | 5篇 |
1943年 | 4篇 |
1942年 | 6篇 |
1941年 | 4篇 |
1940年 | 8篇 |
1939年 | 2篇 |
1938年 | 8篇 |
1937年 | 9篇 |
1933年 | 1篇 |
1931年 | 1篇 |
1930年 | 3篇 |
1927年 | 1篇 |
排序方式: 共有178条查询结果,搜索用时 406 毫秒
1.
Ir W. Spoon 《European journal of plant pathology / European Foundation for Plant Pathology》1939,45(2):75-79
Ohne Zusammenfassung
Hoewel dit artikel ook reeds in eenige bladen is gepubliceerd, meenen wij het, in verband met het groote belang, dat aan een
ruime bekendmaking van het gebruik van Derris bij de thripsbestrijding in vlas verbonden is, ook in ons Tijdschrift te kunnen
opnemen, mede als aanvulling van wat daarin over dit onderwerp reeds verschenen is. Red. 相似文献
2.
Ir. J. A. Huyskes 《European journal of plant pathology / European Foundation for Plant Pathology》1940,46(4):133-140
LABORATORIUM VOOR MYCOLOGIE EN AARDAPPELONDERZOEK
Dit onderzoek is een onderdeel van het „Onderzoek over Boonenziekten”, dat door Schr. uitgevoerd wordt, in opdracht van een
speciale commissie onder voorzitterschap van Ir A. W.van de Plassche, Inspecteur van de Tuinbouw en het Tuinbouwonderwijs. 相似文献
3.
Comparison of 4 point‐of‐care blood gas analyzers for arterial blood gas analysis in healthy dogs and dogs with cardiopulmonary disease 下载免费PDF全文
4.
The canine veterinary medicine in the Middle Ages according to the Livre de chasse by Gaston Phoebus
Boor-van der Putten I 《Historia medicinae veterinariae》2003,28(1):1-11
Gaston Phoebus (1331-1391) of Foix-Béarn was a mighty vassal of the king of France as well as of the king of England. His book, the Livre de Chasse was the first technical treaty of this scope. It was fundamental for the regulation of hunting in Europe, as it was copied and plagiarized later on by a number of authors. Chapter 16 is about diseases of the dog and their treatment. In this article Phoebus views about pathology, etiology and therapy are discussed. The absence of superstition, magic and preconceived notions is remarkable. His writings are based on personal observations which are detailed. His therapy is generally rational and probably often effective, never harmful. His love of hounds is evident. It is regrettable that this highly rational approach didn't have a longer lasting effect on the development of canine medicine. 相似文献
5.
The healing process of telescopic anastomoses was found in an animal experiment with 12 mongrel dogs. After the division of vessels an ileal segment of different length was invaginated into the lumen of the colon using single-layer interrupted sutures. The following four groups were used: Group A (n = 3): end-to-side ileocolostomy, single-layer interrupted suture (invagination length: 0 mm), survival time: 21 days. Group B (n = 3): invagination length: 20 mm, survival time: 7 days. Group C (n = 3): invagination length: 10 mm, survival time: 21 days. Group D (n = 3): invagination length: 20 mm, survival time: 21 days. At the end of the above survival times the anastomosis area was removed. The bursting pressure was measured and morphological as well as histological examinations were performed. In each case the 0-day look-alikes of anastomoses were performed using the remnant bowels, and bursting pressure measurements were done on these models as well. Anastomosis leakage did not occur. The serosal layer of the intracolonic part of the ileum disappeared during the healing process. The free surface of the intracolonic ileal segment became covered by the sliding mucosa of the colon and the prolapsing mucosa of the ileum. The following could be concluded after the experiments: The inner pressure tolerance of a telescopic ileocolostomy promptly after preparation is better than in case of another single-layer anastomosis. This fact results in increased safety against leakage on the first postoperative days. The inner pressure tolerance of the telescopic ileocolostomy increases during the healing process and it does not depend on the length of the invaginated part (0 day-20 mm: 56 mmHg +/- 6, Group A: 252 +/- 39, Group B: 154 +/- 19, Group C: 249 +/- 20, Group D: 298 +/- 2). There is no difference in pressure tolerance between the telescopic and the end-to-side single-layer interrupted anastomoses after the healing process. The invaginated section within the lumen of the large intestine does not suffer ischaemic or any other kind of damage. This inexpensive and simple anastomosis technique could be useful in the veterinary surgical practice as well. 相似文献
6.
7.
J. Oortwijn Botjes Ir. W. B. L. Verhoeven 《European journal of plant pathology / European Foundation for Plant Pathology》1927,33(4):57-90
Ohne Zusammenfassung 相似文献
8.
9.
10.