全文获取类型
收费全文 | 70篇 |
免费 | 4篇 |
专业分类
74篇 |
出版年
2024年 | 1篇 |
2021年 | 3篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 2篇 |
2015年 | 2篇 |
2014年 | 2篇 |
2013年 | 8篇 |
2012年 | 2篇 |
2011年 | 2篇 |
2010年 | 2篇 |
2009年 | 2篇 |
2008年 | 6篇 |
2007年 | 4篇 |
2006年 | 6篇 |
2005年 | 6篇 |
2004年 | 2篇 |
2003年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有74条查询结果,搜索用时 0 毫秒
61.
M. Saleem Akhtar Abdul Asim Farooq Syed Aun Muhammad Laeeq Akbar Lodhi C. Sikandar Hayat M. Mushtaq Aziz 《Biological trace element research》2010,137(3):340-343
The aim of present study was to determine the changes of sodium, potassium, chloride, copper, and zinc in serum of Nili-Ravi
buffalo during pregnancy and lactation. The study was carried out on 25 Nili-Ravi buffaloes during March 2008 to February
2009 at Buffalo Research Institute, Pattoki, District Kasur. Blood samples were taken from each buffalo during early pregnancy
(Phase EP), i.e., between 1 and 3 months gestation, mid pregnancy (Phase MP), i.e., between 4 and 6 months gestation, late
pregnancy (Phase LP), i.e., between 7 and 10 months gestation, and during lactation (Phase LT). Serum sodium, potassium, and
chloride were determined on a clinical chemistry analyzer whereas copper and zinc were determined on an atomic absorption
spectrophotometer. The mean serum sodium, potassium, and chloride concentrations varied non-significantly (P > 0.05) during pregnancy and lactation. With advancing pregnancy, copper increased and was significantly high (P < 0.05) during late pregnancy whereas during lactation copper concentrations dropped significantly (P < 0.05). The zinc concentrations increased non-significantly during early and mid pregnancy. There were significant differences
(P < 0.05) in zinc concentrations during lactation compared with late pregnancy. This study demonstrates that concentrations
of serum sodium, potassium, and chloride remain unchanged during pregnancy and lactation whereas serum copper concentrations
increased and zinc concentrations decreased with advancing pregnancy because of the demand of the fetus at different periods
of pregnancy. 相似文献
62.
Sawant SV Kiran K Mehrotra R Chaturvedi CP Ansari SA Singh P Lodhi N Tuli R 《Journal of experimental botany》2005,56(419):2345-2353
63.
Khan KM Iqbal S Lodhi MA Maharvi GM Ullah Z Choudhary MI Rahman AU Perveen S 《Bioorganic & medicinal chemistry》2004,12(8):1963-1968
A variety of biscoumarins (1-21) with variable substituents at C-11 were synthesized with an improved method and evaluated as urease inhibitors. The synthesized compounds showed varying degree of urease inhibitory activity ranging from 15.06-91.35 microM. The size and electron donating or withdrawing effects of substituents influenced the activity, which lead to the urease inhibitors. 相似文献
64.
Muhammad Arif Lodhi Azhar-ul-Haq M. Iqbal Choudhary Abdul Malik Saeed Ahmad 《Journal of enzyme inhibition and medicinal chemistry》2013,28(3):400-405
The lignans (1–8) isolated from the roots of Vitex negundo Linn. were screened against the serine proteases α-chymotrypsin, thrombin and prolyl endopeptidase. Compounds 3 and 4 were found to be active only against α-chymotrypsin and were noncompetitive and competitive inhibitors of the enzyme, respectively. Ki values were found to be in the range 31.75–47.11 μM. 相似文献
65.
66.
Gapex-5, a Rab31 guanine nucleotide exchange factor that regulates Glut4 trafficking in adipocytes 总被引:3,自引:0,他引:3
Lodhi IJ Chiang SH Chang L Vollenweider D Watson RT Inoue M Pessin JE Saltiel AR 《Cell metabolism》2007,5(1):59-72
Insulin stimulates glucose uptake by promoting translocation of the Glut4 glucose transporter from intracellular storage compartments to the plasma membrane. In the absence of insulin, Glut4 is retained intracellularly; the mechanism underlying this process remains uncertain. Using the TC10-interacting protein CIP4 as bait in a yeast two-hybrid screen, we cloned a RasGAP and VPS9 domain-containing protein, Gapex-5/RME-6. The VPS9 domain is a guanine nucleotide exchange factor for Rab31, a Rab5 subfamily GTPase implicated in trans-Golgi network (TGN)-to-endosome trafficking. Overexpression of Rab31 blocks insulin-stimulated Glut4 translocation, whereas knockdown of Rab31 potentiates insulin-stimulated Glut4 translocation and glucose uptake. Gapex-5 is predominantly cytosolic in untreated cells; its overexpression promotes intracellular retention of Glut4 in adipocytes. Insulin recruits the CIP4/Gapex-5 complex to the plasma membrane, thus reducing Rab31 activity and permitting Glut4 vesicles to translocate to the cell surface, where Glut4 docks and fuses to transport glucose into the cell. 相似文献
67.
68.
Arif Lodhi M Iqbal Choudhary M Malik A Ahmad S 《Journal of enzyme inhibition and medicinal chemistry》2008,23(3):400-405
The lignans (1-8) isolated from the roots of Vitex negundo Linn. were screened against the serine proteases alpha-chymotrypsin, thrombin and prolyl endopeptidase. Compounds 3 and 4 were found to be active only against alpha-chymotrypsin and were noncompetitive and competitive inhibitors of the enzyme, respectively. Ki values were found to be in the range 31.75-47.11 microM. 相似文献
69.
Nisar M Ahmad M Wadood N Lodhi MA Shaheen F Choudhary MI 《Journal of enzyme inhibition and medicinal chemistry》2009,24(1):47-51
Two new diterpenoid alkaloids, heterophyllinine-A (1) and heterophyllinine-B (2), along with two known alkaloids dihydroatisine (3) and lycoctonine (4) were isolated from the roots of Aconitum heterophyllum Wall. The structure of (1) and (2), were deduced on the basis of spectral data. Compounds 1-2 inhibited acetylcholinesterase (AChE, EC 3.1.1.7) and butyrylcholinesterase (BChE, EC 3.1.1.8) enzymes in a concentration-dependent manner with percent inhibition ranging between 4.24% and 6.94 % and 79.1 % and 82.75 % for AChE and BChE, respectively indicating that compounds 1 and 2 are about thirteen times more specific to BChE than AChE. 相似文献
70.
M. A. K. Lodhi 《American journal of botany》1977,64(3):260-264
Soil properties were found to vary with increasing distance from tree trunks of individuals of the same species, and different species were found to vary in their effects on soil properties. The differences in pH and mineral concentration at different distances from the trunk were often statistically significant even under the same tree. When all species are considered, iron had the least variability at different distances from the trunks of all minerals investigated, followed by potassium. Nitrate nitrogen had the greatest overall variability at different distances from the trunks. Ammonium nitrogen in the soil was always considerably higher than nitrate nitrogen when compared at each distance from the trunk under each species. Low amounts of nitrate nitrogen could not have been due to its uptake by the intact vegetation, because the soil samples were taken before the active growth period. It seems possible that the variable tree litter under different species plays an important role in controlling the soil pH, nitrification, and mineralization. Thus, it appears that in a climax community different dominating species, by developing variable physio-ecological niches, can determine the variable undergrowth vegetation under them. 相似文献