全文获取类型
收费全文 | 177篇 |
免费 | 7篇 |
专业分类
林业 | 5篇 |
农学 | 1篇 |
13篇 | |
综合类 | 7篇 |
农作物 | 5篇 |
水产渔业 | 18篇 |
畜牧兽医 | 121篇 |
植物保护 | 14篇 |
出版年
2022年 | 2篇 |
2021年 | 6篇 |
2019年 | 4篇 |
2018年 | 6篇 |
2017年 | 3篇 |
2016年 | 1篇 |
2015年 | 8篇 |
2014年 | 4篇 |
2013年 | 6篇 |
2012年 | 6篇 |
2011年 | 10篇 |
2010年 | 6篇 |
2009年 | 8篇 |
2008年 | 8篇 |
2007年 | 11篇 |
2006年 | 11篇 |
2005年 | 11篇 |
2004年 | 9篇 |
2003年 | 11篇 |
2002年 | 11篇 |
2001年 | 6篇 |
2000年 | 11篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1995年 | 1篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1970年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有184条查询结果,搜索用时 15 毫秒
101.
Masaki Fukuda Izumi Sendo Satoko Imahori Yukitaka Fukumasa-Nakai 《Journal of Wood Science》2007,53(3):264-267
Electrophoretic analysis of the transmission pattern of mitochondrial plasmids in protoplast cell fusion between compatible
monokaryons of Lentinula edodes indicates that three of the four plasmids carried in parental monokaryons are effectively transferred and replicated in the
protoplast fusants. The two monokaryons, 1158a and 1569a, carried different plasmids that could be distinguished by a single
restriction digest. Electrophoresis of intact plasmids and restriction analyses indicate that all but one of the fusants carry
three of the four possible plasmids, indicating that transmission of plasmids in protoplast fusions is principally biparental
in L. edodes. Thus, heterocytoplasmic cells of L. edodes can be effectively constructed by protoplast cell fusion. In addition, plasmids of the same homology group cannot coexist
in the heteroplasmic cells after protoplast cell fusion.
Contribution No. 382 of the Tottori Mycological Institute 相似文献
102.
Mamiko ONO Hiroki AKUZAWA Yasuo NAMBO Yuuko HIRANO Junpei KIMURA Satoko TAKEMOTO Sakiko NAKAMURA Hideo YOKOTA Ryutaro HIMENO Tohru HIGUCHI Tadatoshi OHTAKI Shigehisa TSUMAGARI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(12):1599-1603
A three-dimensional internal structure microscopy (3D-ISM) can clarify the anatomical
arrangement of internal structures of equine ovaries. In this study, morphological changes
of the equine ovary over the first 12 months of life were investigated by 3D-ISM in 59
fillies and by histological analysis in 2 fillies. The weight and volume of the paired
ovaries initially decreased from 0 to 1 months to 2 to 3 months of age and then
significantly increased at 8 to 12 months of age. The ovulation fossa was first observed
around the 3rd month and became evident after the 6th month. The number of follicles with
a diameter of ≥10 mm and the diameter of the largest follicle increased gradually after 6
months of age. On a volume basis, the medulla accounted for nearly 90% of the whole ovary
at 0 to 1 months of age, but significantly decreased from 2 to 3 months of age. The volume
of the cortex increased progressively after birth and reached approximately 60% of the
total volume at 8 to 12 months of age. This significant development of the cortex
coincided with the increased number and size of large follicles observed from 6 months of
age. These results suggest that the development of the cortex plays a role in the
maturation of the follicles and the equine ovary undergoes substantial morphological
changes postnatally until puberty. 相似文献
103.
An eosinophilic substance (ES) is usually observed in the mouse nasal septum and increases in volume with aging. It has been described as amyloid in textbooks and one report. However, it has been described as "not amyloid" in other reports because there was a negative reaction to Congo red. In this study, the ES was investigated histopathologically and electron microscopically to determine whether it was amyloid or not. The ES was only observed at the interstitium of clear HE-stained nasal glands in the septum, in which 2 kinds of glands were present (dark and clear stained by HE). The volume of the ES was small in young mice and large in older ones. Neither nasal gland degeneration nor inflammation resulted, even if a large amount of the ES was observed. The ES reacted negatively to Congo red but was strongly positive to periodic acid-Schiff reaction with prior diastase treatment. In the electron microscope observation, the ES consisted of amorphous material and collagen, but no nonbranching fibrils. Similar amorphous material was also observed in the nasal gland epithelial cells and was connected to the material in the rough endoplasmic reticulum. The above-mentioned findings indicated that the ES was not amyloid and suggested the ES might consist of not only collagen but also complex carbohydrate, which was produced by the nasal gland epithelial cells. 相似文献
104.
105.
Kuwamura M Sawamoto O Yamate J Aoki M Ohnishi Y Kotani T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2007,69(5):531-533
A female adult bottlenose dolphin suddenly died at 17 days after the capture. Macroscopically, severe pulmonary congestive edema was found. Histopathology revealed many lungworms in the bronchioli and the worms were identified as Stenurus ovatus. Variously sized vessels proliferated around the lesioned bronchioli. Based on these findings, chronic bronchopneumonia due to the lungworm was diagnosed and vascular proliferation was similar to angiomatosis recently reported in Atlantic bottlenose dolphin. 相似文献
106.
Springiness of Pancake and Its Relation to Binding of Prime Starch to Tailings in Stored Wheat Flour
Masaharu Seguchi Machiko Hayashi Kazuko Kanenaga Chiho Ishihara Satoko Noguchi 《Cereal Chemistry》1998,75(1):37-42
Wheat flours were stored at room temperature (15–25°C), 40, 60, 80, and 100°C for various times. The baking performance of these flours was then evaluated in terms of the springiness of pancakes (recovery from crushing). Baking performance improved with increased storage time at each temperature. Brabender Amylograph tests of the flours indicated that the onset temperature in viscosity decreased with increased storage time at each temperature. When the flours were fractionated by acetic acid (pH 3.5) with mortar and pestle, recoveries of the water-solubles and gluten fractions were unchanged, but recoveries of prime starch and tailings fractions changed remarkably with increased storage time. On the other hand, those changes were not observed when flours were fractionated with a Waring blender. The binding of prime starch to tailings was correlated significantly with baking performance. 相似文献
107.
Yasuko Mizoguchi Akira Miyata Yoshikazu Ohtani Ryuichi Hirata Satoko Yuta 《Journal of Forest Research》2009,14(1):1-9
Aggregating and sharing the metadata of flux observation sites results in a strong collaboration among various fields of study.
Such data sharing will also be a part of the future design of a tower flux observation network in Asia. The aim of this review
is to comprehend the state of tower flux observation sites in Asia. There are 109 tower flux observation sites in Asia including
51 forest sites. There are more new sites under construction in Asia than in America and Europe. These sites range from the
taiga in Siberia to the rainforest in Southeast Asia, and from the equatorial to polar Koeppen climate zones. There are many
highly humid areas in Asia, not only at low latitudes but also at middle latitudes. This climate condition has developed unique
vegetation such as lucidophyllous (evergreen broadleaf) forest, which is distributed in warm areas with high precipitation
in the growing season. However, there are only a few observations taking place in lucidophyllous forest. Rice paddy fields
are also unique land cover in Asia. It is important to accumulate long-term data for rice fields with their management records,
because plant activity depends highly on both climate conditions and land-use management. Flux data, especially net ecosystem
exchange and related elements, are used for widespread studies not only within the flux-research community but also in other
fields of study, for example remote sensing. At present, however, both the quantity and quality of the data are not sufficient
for these studies. Regarding the quantity, there are many recently established sites that have not published data yet; regarding
quality, flux data include uncertainties caused by methodological problems. Flux researchers are required not only to obtain
flux data but also to improve their quality. Meanwhile, data users must understand there are still uncertainties in flux data.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
108.
Tomonari Kotani Yoshiyuki Wakiyama Tatsuhiro Imoto Hisahide Suzuki Hiroshi Fushimi 《Journal of the World Aquaculture Society》2009,40(3):383-393
Depending on the initial stocking density, ocellate puffer larvae exhibit the cannibalism that resulted in high mortality. We aimed to clarify the relationship between stocking density of larvae, mortality, and the effect of density on cannibalism. Ocellate puffer larvae were reared at five different stocking densities between 5 and 25 larvae/L with duplicate 1‐m3 tank for each treatment. Larvae were stocked at 0 d after hatch (d.a.h.), and the experimental cultures lasted for 55 d. In larvae stocked initially at more than 10 larvae/L, cannibalism was evident from 11 to 17 d.a.h., and the survival rate at 55 d.a.h. was less than 15%. The survival rate was 25.5% at 5 larvae/L, and cannibalism was observed from 31 to 32 d.a.h. Consequently, an initial density of 5 larvae/L was the most efficient in terms of survival and the prevention of cannibalism. On the other hand, when cannibalism is still observed at 5 larvae/L, it is necessary to lower the stocking density before the onset of cannibalism. 相似文献
109.
Y Tsukamoto T Kotani K Kohama S Sakuma F Sasaki 《Canadian journal of veterinary research》1999,63(4):282-283
Cultured chick embryonic fibroblasts formed syncytia after infection with avian reovirus (ARV) strain 58-132. Mitotic figures were occasionally observed within the syncytia. In addition, many nuclei in the syncytia incorporated 5-bromo-2'-deoxyuridine (BrdU), a DNA replication marker, indicating that they were in the S-phase of the cell cycle. These observations suggested that the nuclei within ARV-induced syncytia originated from nuclear endomitosis without cell division, as well as from cell fusion. 相似文献
110.
Satoko KANEMATSU Nobuhiro MINAKA Takao KOBAYASHI Akira KUDO Yoshihiro OHTSU 《Journal of General Plant Pathology》2000,66(3):191-201
Sequences of the ribosomal DNA (rDNA) internal transcribed spacer (ITS) regions were examined to infer a molecular phylogeny
of small-spored Phomopsis isolates, designated W-type (mainly white colony, weakly virulent, bearing both alpha and beta conidia at 25°C on PDA) and
G-type (mainly gray colony, highly virulent, bearing only alpha conidia at 25°C on PDA), and P. amygdali from fruit trees. Phomopsis G-type and P. amygdali were a monophyletic group distinct from the W-type. The W-type isolates were divided into two monophyletic groups. Diaporthe citri, D. tanakae, P. asparagi, P. viticola, P. vitimegaspora and D. nomurai, which are morphologically distinguishable from W- and G-types, differed from the W- and G-types in molecular phylogenetic
analyses. PCR-RFLP analysis of rDNA ITS regions was useful to distinguish each of the Phomopsis species and groups using three restriction enzymes. In mating tests, W-type isolates from fruit trees were heterothallic and
inter-fertile even between isolates belonging to the different monophyletic groups. Isolates of the G-type and P. amygdali collected in Japan were cross-fertile. Some isolates from Lunaria annua, Ulmus glabra and Juglans regia belonged to one of the two monophyletic groups of the W-type and were cross-fertile with W-type isolates from Rosaceous fruit
trees.
Received 27 September 1999/ Accepted in revised form 27 January 2000 相似文献