نتایج جستجو برای: limiting factors
تعداد نتایج: 1147104 فیلتر نتایج به سال:
Soils are polluted by both organic and inorganic substances. Plants growing in soils suffer damages such as leaf rolls, chlorosis, growth inhibition, root tips browning, death of plant. Soil pollutants hydrocarbon heavy metals absorbed crops ends up being consumed human posing health risk like cancer respiratory abnormally. Conventional methods remediation chemical physical very expensive not s...
This article focuses on the development possibilities of venison market in Czech Republic. The main factors affecting primary game were investigated, both production limitations side hunters and purchase prices. These analysed context consumer prices general meat common (beef, pork). Furthermore, size total was estimated, taking into account export import this commodity. potential for Republ...
There is a severe shortage of knowledge of bee biogeography. Some former studies have highlighted a link between bee diversity and xeric ecosystems, but we know practically nothing of the macro-ecological factors driving bee diversity. The present study aims to analyse the main macro-ecological factors driving bee species-richness in the Saharan region. Our dataset includes 25,000+ records for ...
We observe a significant increase in InSb quantum-well mobility when remote doping of Al0.09In0.91Sb barriers is accomplished by three layers, rather than one layer, of Si d doping. At 7 K, the electron mobility in single quantum-well structures grown on GaAs substrates is as high as 280 000 cm/V s with an electron density of 2.33310 cm. The density of oriented abrupt steps and square-mound fea...
Modern methods of cryo electron microscopy and tomography allow visualization of protein nanomachines in their native state at the nanometer scale. Image processing methods including sub-volume averaging applied to repeating macromolecular elements within tomograms allow exploring their structures within the native context of the cell, avoiding the need for protein isolation and purification. T...
OF DOCTORAL DISSERTATION HELSINKI UNIVERSITY OF TECHNOLOGY P.O. BOX 1000, FI-02015 TKK http://www.tkk.fi Author Janne Halme Name of the dissertation Performance limiting factors in flexible dye solar cells Manuscript submitted 10.3.2009 Manuscript revised 11.5.2009 Date of the defence 1.6.2009 Monograph Article dissertation (summary + original articles) Faculty Faculty of Information and Natura...
Environmental limiting factors (ELFs) are the thresholds that determine the maximum or minimum biological response for a given suite of environmental conditions. We asked the following questions: 1) Can we detect ELFs on percent tree cover across the eastern slopes of the Lake Tahoe Basin, NV? 2) How are the ELFs distributed spatially? 3) To what extent are unmeasured environmental factors limi...
Recent advances in recording and real-time analysis of surface electromyographic signals (sEMG) have fostered the use of sEMG human–machine interfaces for controlling personal computers, prostheses of upper limbs, and exoskeletons among others. Despite a relatively high mean performance, sEMG-interfaces still exhibit strong variance in the fidelity of gesture recognition among different users. ...
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