作者: 大炮 時(shí)間: 2025-3-21 22:46 作者: 遷移 時(shí)間: 2025-3-22 02:00 作者: Counteract 時(shí)間: 2025-3-22 05:30
Sara Fuchs,Drorit Neumann,Anat Safranhile conventional agriculture is driven almost solely by productivity and profit, sustainable agriculture integrates biological, chemical, physical, ecological, economic and social sciences in a comprehensive way to develop new farming practices that are safe and do not degrade our environment. In t作者: 安定 時(shí)間: 2025-3-22 12:04 作者: Impugn 時(shí)間: 2025-3-22 13:01
Chester T. O’Konski structure of the grain market, the authors study the essence of the market exchange, the main stages of its development, and classification of market structures, based on the works of classical, Marxist, institutional, and neo-institutional economic schools. After that, the authors apply the select作者: gentle 時(shí)間: 2025-3-22 20:56
Alfred Maelicke,Diane Watters,Gregor Felsmeasures of state regulation (e.g., energy efficiency regulation and environment-related treaties in force) on the environmental and energy efficiency of agriculture (and, as a result, on its sustainability). Framework recommendations for state regulation of environmental and energy sustainability o作者: 使熄滅 時(shí)間: 2025-3-22 22:10
A. Vincent,H. Woode agricultural sector’s costs in the economic sector’s budget. The practical significance of this research consists in clarifying the priorities of government support in relation to global trends and developing a methodology for assessing the effectiveness of budget programs that will contribute to 作者: dearth 時(shí)間: 2025-3-23 01:32 作者: SYN 時(shí)間: 2025-3-23 08:03 作者: 贊美者 時(shí)間: 2025-3-23 13:36
Heino Prinzmponent of improving the quality of life of the population of the member states, sustainable development of the Eurasian Economic Union. The intention to create conditions for solving the tasks of comprehensive modernization and increasing the competitiveness of the economies of the member states of作者: effrontery 時(shí)間: 2025-3-23 14:34 作者: 耐寒 時(shí)間: 2025-3-23 21:46 作者: Phonophobia 時(shí)間: 2025-3-24 00:08 作者: 繞著哥哥問 時(shí)間: 2025-3-24 05:03 作者: COST 時(shí)間: 2025-3-24 09:44
D. Siemen,S. Hellmann,A. Maelickecan increase both grain yield and N use efficiency (NUE) as well as minimizing N loading of the environment. Corn growth and development is driven by heat, which can be expressed as growing degree days or crop heat units. It takes about 6 weeks for a corn crop to reach quick growth stage. Excess N i作者: Intercept 時(shí)間: 2025-3-24 14:39 作者: 為寵愛 時(shí)間: 2025-3-24 17:39 作者: 可以任性 時(shí)間: 2025-3-24 21:50 作者: biosphere 時(shí)間: 2025-3-25 01:37
D. Colquhoun,D. C. Ogdendiffer and have evolved across the world. Finally, it puts together the best practices of sustainability for the use of policymakers. The book pays particular attention to least developed countries where hunger978-3-031-09798-0978-3-031-09796-6Series ISSN 2522-5367 Series E-ISSN 2522-5375 作者: Throttle 時(shí)間: 2025-3-25 04:38 作者: countenance 時(shí)間: 2025-3-25 08:46 作者: TEN 時(shí)間: 2025-3-25 15:09
Monoclonal Antibodies as Probes of Acetylcholine Receptor Functionodies have been developed (Watters and Maelicke, 1982, 1983; Fels et al., 1985, 1986). Here we summarize and discuss some recent data from our laboratory obtained with such antibodies. As the key results, (i) we have identified antibodies which affect receptor function indirectly, i.e. by allosteric作者: doxazosin 時(shí)間: 2025-3-25 17:27 作者: 相反放置 時(shí)間: 2025-3-25 22:46 作者: 毛細(xì)血管 時(shí)間: 2025-3-26 03:59
Single Channel Studies of Acetylcholine Receptors Covalently Alkylated with Acetylcholineetween mean open time and agonist occupancy has not yet been tested quantitatively. (ii) Persistent depolarization after covalent labeling with agonist has only been observed in unclamped membrane voltage studies with . electroplaque cells (Bartels et al., 1976). Comparable studies with voltage-clam作者: acclimate 時(shí)間: 2025-3-26 05:32
Effects of Allosteric Ligands on the Gating of Single Channel Currents in BC3H-1 Cells the open time distributions. In the presence of 100 nM ACh, tetracaine, PCP, and ANMC decreased apparent mean channel open times with IC. ’s of 2.5 ±.5 μM, 5.0 ±.5μM, and 3.0 ±.5μM, respectively. The effects of tetracaine were inconsistent with a model for sequential block of open channels. The num作者: tariff 時(shí)間: 2025-3-26 11:02 作者: 深陷 時(shí)間: 2025-3-26 15:54 作者: Veneer 時(shí)間: 2025-3-26 20:34 作者: EVADE 時(shí)間: 2025-3-26 21:20 作者: 怎樣才咆哮 時(shí)間: 2025-3-27 04:57
Topography of the Acetylcholine Receptor Revealed by Fluorescence Energy Transfered to overall receptor structure. The approach carries the inherent advantage that conformation can be monitored on a functional receptor. Also, fluorescence polarization, lifetimes, quantum yields, and spectral characteristics all yield information on molecular motion, the environment of the site o作者: Forehead-Lift 時(shí)間: 2025-3-27 07:47 作者: esculent 時(shí)間: 2025-3-27 09:43
Monoclonal Antibodies as Probes of Acetylcholine Receptor Functionl., Fuchs, et al., Tzartos et al., Barkas et al., Froehner, et al. in this volume; Young et al. 1985). The existence of only a few reports on functional studies (Moshly-Rosen and Fuchs, 1981; Watters and Maelicke, 1983; Mikovilovic and Richman, 1984; Lindstrom, 1984) is mainly due to the fact that a作者: antedate 時(shí)間: 2025-3-27 15:51 作者: Chromatic 時(shí)間: 2025-3-27 19:43
Tertiary Structure of the Nicotinic Acetylcholine Receptor Probed by Photolabeling and Protein Chemive four chains of the Ach-receptor have been cloned and sequenced in . (Ballivet .., 1982, Noda .., 1982, 1983a,b, Claudio .., 1983), in . (for the a chain: Giraudat .., 1982, Sumikawa .., 1982, Devillers-Thiéry .., 1983) and in several vertebrate species, including humans (ref. in Kubo .., 1985 and作者: liaison 時(shí)間: 2025-3-28 00:38
A Structural Model of the Ion Channel of the Nicotinic Acetylcholine Receptorhe ion channel. Both are integral parts of the heteropentameric receptor protein and appear not to be separable as molecular entities. Their interaction has been described in analogy to other allosteric proteins (1) as mediated by conformational changes of the protein conveyed from the ligand bindin作者: 老人病學(xué) 時(shí)間: 2025-3-28 03:55
A General Treatment of Ligand Binding to the Acetylcholine Receptorontrolled cation channel (For review see: Maelicke 1984, Changeux et al. 1984). When plotted versus the agonist concentration, the response (depolarisation of the membrane) follows a sigmoid curve. Half-maximal response is observed at 28μM acetylcholine (Dreyer et al. 1978), whereas equilibrium bind作者: 大廳 時(shí)間: 2025-3-28 07:38
Lipid-Protein Interactions and Acetylcholine Receptor Function in Reconstituted Membranesariety of biophysical techniques (1). The lipids in direct contact with membrane proteins are usually exchangeable with bulk lipids, although the two different types of lipid environments can be readily detected using electron spin resonance techniques (2–4). There is some selectivity in the apparen作者: phase-2-enzyme 時(shí)間: 2025-3-28 11:26
Regulation of Intercellular Signal Transmission. New Approaches to Chemical Kinetic Measurementsr-rich membrane vesicles. More recently we have begun to develop techniques for making similar chemical kinetic measurements of receptor function directly on cell surfaces. We are using the information we have already obtained about the mechanism of action of the acetylcholine receptor to calibrate 作者: 極微小 時(shí)間: 2025-3-28 17:51 作者: Sleep-Paralysis 時(shí)間: 2025-3-28 21:17 作者: maroon 時(shí)間: 2025-3-28 23:20
Effects of Allosteric Ligands on the Gating of Single Channel Currents in BC3H-1 Cells on the single channel currents of the nicotinic acetylcholine receptor (AChR) of BC.H-1 cells obtained from the American Type Culture Association were examined. At micromolar concentrations these agents acted as noncompetitive blockers of acetylcholine (ACh) activated currents. In the presence of A作者: ILEUM 時(shí)間: 2025-3-29 04:16
own needs. Starving people in poor nations, obesity in rich nations, increasing food prices, on-going climate changes, increasing fuel and transportation costs, flaws of the global market, worldwide pesticide pollution, pest adaptation and resistance, loss of soil fertility and organic carbon, soil作者: 大火 時(shí)間: 2025-3-29 09:16
A. Brisson own needs. Starving people in poor nations, obesity in rich nations, increasing food prices, on-going climate changes, increasing fuel and transportation costs, flaws of the global market, worldwide pesticide pollution, pest adaptation and resistance, loss of soil fertility and organic carbon, soil作者: 認(rèn)識(shí) 時(shí)間: 2025-3-29 13:33 作者: Irksome 時(shí)間: 2025-3-29 19:28 作者: 微不足道 時(shí)間: 2025-3-29 21:28
S. J. Tzartos,A. A. Kordossies, e.g. climate change, energy crisis, economy crisis, dise.Sustainability rests on the principle that we must meet the needs of the present without compromising the ability of future generations to meet their own needs. Starving people in poor nations, obesity in rich nations, increasing food pric作者: CRUDE 時(shí)間: 2025-3-30 00:41
Sara Fuchs,Drorit Neumann,Anat Safran own needs. Starving people in poor nations, obesity in rich nations, increasing food prices, on-going climate changes, increasing fuel and transportation costs, flaws of the global market, worldwide pesticide pollution, pest adaptation and resistance, loss of soil fertility and organic carbon, soil作者: Accede 時(shí)間: 2025-3-30 06:01 作者: Frisky 時(shí)間: 2025-3-30 10:42
Chester T. O’Konskiironment, strictly allocated to each type of market structure. The fundamental basis is the information environment of the first level, which provides economic agents with objective market prices, production volumes, and trades. Based on these data, the government can regulate the market by administ作者: Ankylo- 時(shí)間: 2025-3-30 12:25
Alfred Maelicke,Diane Watters,Gregor Felsinst climate change) and energy (from the positions of energy efficiency) efficiency as the criteria of agriculture’s sustainability. Based on the dataset “Corporate social responsibility, sustainable development and fight against climate change: imitation modelling and neural network analysis in re作者: inflate 時(shí)間: 2025-3-30 19:12
A. Vincent,H. Wood use general scientific and specific methods of financial theory. The paper generalizes international studies of government support, which highlight scenarios typical for countries with transition economies. The paper presents macro indicators to assess the effectiveness of government support, parti作者: FOR 時(shí)間: 2025-3-30 21:03 作者: 豐滿有漂亮 時(shí)間: 2025-3-31 01:31 作者: Water-Brash 時(shí)間: 2025-3-31 08:38 作者: dominant 時(shí)間: 2025-3-31 10:33 作者: Generalize 時(shí)間: 2025-3-31 16:31
George P. Hess The norms on land and other natural resources in the constitutions of the EAEU member states are considered. Legislative gaps and shortcomings of the regulatory regulation of land relations in the EAEU countries have been identified. The emphasis is placed on identifying significant problems, first作者: 礦石 時(shí)間: 2025-3-31 20:29 作者: anatomical 時(shí)間: 2025-3-31 22:42 作者: 匍匐 時(shí)間: 2025-4-1 03:46 作者: 行為 時(shí)間: 2025-4-1 08:06
D. Siemen,S. Hellmann,A. Maelicke most cropping systems is low. The inefficient use of N fertilizer represents approximately $680 million to $1 billion of direct economic losses annually for Canadian farmers alone. In humid environments such as northeast USA and eastern Canada, corn yield response to N amendments is poorly correlat作者: Self-Help-Group 時(shí)間: 2025-4-1 13:28
Roger L. Papke,Robert E. Oswaldrop productivity to meet this demand, resulting in deterioration of the environment. Rhizospheric microorganisms maintain a close relationship with plants and help stimulate plant growth. Arbuscular mycorrhizal fungi are ubiquitous and form a symbiotic association with many higher plants. They impro作者: 意外 時(shí)間: 2025-4-1 15:19
What Can We Learn about the Acetylcholine Receptor from Synthetic Peptides?Torpedo electric organ (9–13). The sequence data have been the basis for predictions concerning the transmembrane orientation of the AChR subunits, as well as the possible location of the acetylcholine binding site, the glycosylation and phosphorylation sites, and the main immunogenic determinants.
