... responded In the second example [7], the growing medium of the root system was artificially made heterogeneous by the means of a hydroponics system, in which the major part of the root system bathed ... represents the apparent extension of the interaction zone but only to that of their mother root The global response was essentially local, since only the laterals close to the tip of the mother root ... emergence of branch roots on a given root (acropetal branching) On the maize root system for instance, the major roots appear sequentially, firstly from the embryo (seminal root) , and then from the...
Ngày tải lên: 08/08/2014, 14:22
... difference between the stem and the surrounding air, the gas inside the stem will be pressurized and flow through the intercellular spaces of the phloem and the xylem to the roots Materials and ... injected into the middle chamber of a glass apparatus containing the stem of a young leafless tree The tracer gas flow out of the stems into an upper chamber as well as out of the roots into a ... Fig The graphs (Fig 2) show results of the tracer measurements Gas flow through the stems to root and shoot can be observed in each of the investigated species In most species, gas flow to the roots...
Ngày tải lên: 09/08/2014, 02:21
THE ROOT SYSTEMS OF PLANTS pptx
... one of his experiments that the roots of timothy weighed 31 per cent of the weight of the hay Hosaeus, investigating the same subject about the same time, found that the weight of roots of one of ... conducted about 1867, added the lengths of all the fine roots from each of various plants He found that the total length of roots, that is, the sum of the lengths of all the roots, of one wheat plant ... be repeated now The relative weights of the roots and the stems and the leaves not alone show the large quantity of roots; the total lengths of the roots are even more striking The German investigator,...
Ngày tải lên: 29/06/2014, 15:20
Báo cáo lâm nghiệp: "Morphological and functional variability in the root system of Quercus ilex L. subject to confinement: consequences for afforestation" ppt
... length to the depth of the container and preventing the development of replacement taproots The confining of lateral roots in the container and their downward growth lead to the generation of an orthogeotropic ... growth of taproots was physically restrained Since SRL is often used either as an overall index of root thickness or as an estimator of the benefit (length) to cost (dry weight) ratio of the root system ... 21, 28] On the contrary, our results indicate the development of different root morphologies owing to the influence of tube length Overall, the deepest tube showed the highest values of root length...
Ngày tải lên: 08/08/2014, 00:22
An investigation on the root system of mangroves and its influence on current flow
... (Wr) of prop root system Solid line indicates kr=Wr Symbols: kr, height of submerged prop root system; Wr, width of root system; Dbh, diameter of trunk at breast height; Dr1, diameter of roots ... investigate the use of Rhizophora mangrove trees to reduce the strength of tsunamis Their mangrove model consisted of three parts: root, trunk and leaf system The root and leaf systems were made of permeable ... aerial roots which arise from the main trunk or lower branches of the Rhizophora genus It is believed that the number of prop roots and the complexity of their structure are response to the intensity...
Ngày tải lên: 09/09/2015, 11:10
THE structure of the multiprogramming system
... proved the eon'eetness of the system with a rigor and explicitness that is unusual for the great majority of mathematical proofs A Survey of the System gtructure Storage Allocation In the classical ... in their homing position Each process blocked in the course of task execution relies on the other processes for removal of the barrier Essentially, the proof in question is a demonstration of the ... the value of the semaphore called "sem" by If the resulting value of the semaphore concerned is positive, the V-operation in question has no further effect; if, however, the resulting value of...
Ngày tải lên: 12/09/2012, 15:05
Developmentof the Microfinance system in Russia
... 4.5 millions of individual entrepreneurs); 90 % of the total number of establishments; 44 % of GDP; 45 % of employment Sources of financing Business partners, relatives or other people ... stimulation of goods and services production and distribution, and also for a mutuality of start-up enterprises in the acquisition of getting profits and a capital accumulation experience Main tasks of ... of Microfinance to stimulate efficiency access to the financial resources; to create work places; to grow of tax proceeds; to create a credit history for the further development of SMEs...
Ngày tải lên: 24/10/2013, 03:15
The Critique of the Morality System
... with the historical facets of his position, some with the philosophical, and some with both.4 What are the defining features of the morality system? At the end of Chapter 10 of Ethics and the Limits ... Kant, some of the most fundamental moral obligations concern the promotion of general ideals or ends such as our own perfection and the happiness of others The obligations of the morality system ... 66216 The Critique of the Morality System July 11, 2007 113 KANT AND THE MORALITY SYSTEM Now that we have a better idea of what Williams means by the morality system, ” what are we to make of his...
Ngày tải lên: 01/11/2013, 07:20
an overview of the financial system
... An Overview of the Financial System • Primary function of the Financial System is financial Intermediation • The channeling of funds from households, firms and governments ... shortage of funds (borrowers) • Direct finance vs Indirect finance 2-2 An Overview of the Financial System II 2-3 Structure of Financial Markets I Debt Markets • Short-term (maturity < year) – the ... expertise and taking advantage of economies of scale 2- Function of Financial Intermediaries III Risk Sharing • Create and sell assets with low risk characteristics and then use the funds to buy assets...
Ngày tải lên: 05/01/2014, 16:55
Tài liệu Organic matter distribution of the root zone in a constructed subsuface flow wetland pptx
... leads to a decline of the filter ability of the constructed wetland The objective of this study is to survey the vertical and horizontal distribution of the OM in sand bed of the experimental constructed ... direction, the average value of OM in each cross-section is highest at the depth 50 cm and lowest at the depth 80 cm This result is in line with the visual observation of the sand color and the root system ... even at the relatively low amount usually found in soils The macrophyte plants transport approximately 90% of the oxygen available in the root zone (Lee, 2007) Such the oxygen in the root zone...
Ngày tải lên: 24/01/2014, 00:20
Tài liệu Color Atlas of Pharmacology (Part 12): Inhibitors of the RAA System ppt
... impair the pumping action of the heart, or when there is a threat of other complications The choice of drug is empirical If the desired effect is not achieved, another drug is tried Combinations of ... membranous sacs of the sarcoplasmic reticulum (SR); c) Ca2+ bound to the inside of the plasmalemma The plasmalemma of cardiomyocytes extends into the cell interior in the form of tubular invaginations ... terms of their positive inotropic effect, !-sympathomimetics, unlike dopamine (p 114), are of little therapeutic use; they are also arrhythmogenic and the sensitivity of the !-receptor system...
Ngày tải lên: 26/01/2014, 19:20
Tài liệu Báo cáo khoa học: Control of the coagulation system by serpins Getting by with a little help from glycosaminoglycans pptx
... the RCL of the serpin inserts into the major A b-sheet causing the protease to be rapidly translocated from the top to the bottom of the inhibitor [6] In the process, the structure of the protease ... polymers of serpins, where the insertion of another molecule’s RCL takes place [8] Both of these result in the irreversible inactivation (generally) of the serpins, and, in the case of the anticoagulant ... ‘crushed’ against the bottom of the inhibitor [7] In particular, this deformation of the protease affects the geometry of the catalytic triad, preventing the completion of catalysis beyond the acyl intermediate...
Ngày tải lên: 20/02/2014, 02:21
Tài liệu Báo cáo khoa học: "The Second Release of the RASP System" pdf
... account both of the probability of derivations yielding a specific relation and of the proportion of such derivations in the forest produced by the parser A weighted set of GRs from the parse forest ... most of the remainder consists of phrasal fragments marked as independent text sentences in passages of dialogue The coverage of our WSJ test data is 84% In cases where there is no parse rooted ... to some extent tune the parser to different genres without the need for retraining The current version of the grammar finds at least one parse rooted in S for about 85% of the Susanne corpus (used...
Ngày tải lên: 20/02/2014, 12:20
Tài liệu Báo cáo Y học: Presence and regulation of the endocannabinoid system in human dendritic cells potx
... marrow stem cells, are the most potent antigen-presenting cells of the immune system They play a central role in the initiation of primary immune response and in the enhancement of secondary immune ... the RNA content and cDNA synthesis in the different preparations Furthermore, the PCR primers for glyceraldehyde3-phosphate dehydrogenase and FAAH were selected on the basis of the sequence of ... one of the enzymes mostly involved in endocannabinoid inactivation The heterogeneous distribution of CB2 receptors among cells of the immune system suggests that these receptors might exert their...
Ngày tải lên: 22/02/2014, 07:20
Aging of the Respiratory System: Impact on Pulmonary Function Tests and Adaptation to Exertion pdf
... recoil of the lung (Fig 2) [9] The kyphotic curvature of the spine and the anteroposterior diameter of the chest increase with aging, thereby decreasing the curvature of the diaphragm and thus its ... Conversely, there is a progressive decrease in vital capacity to approximately 75% of best values Because of the increased stiffness of the chest wall, the age-related diminished elastic recoil of the ... intercept) and a decrease in the surface area of airspace wall per unit of lung volume beginning in the third decade of life The decrease in surface area of airspace wall per unit of lung volume approximately...
Ngày tải lên: 05/03/2014, 21:20
PROTOCOL ON THE STATUTE OF THE EUROPEAN SYSTEM OF CENTRAL BANKS AND OF THE EUROPEAN CENTRAL BANK pdf
... months of the publication of the decision or of its notification to the plaintiff or, in the absence thereof, of the day on which it came to the knowledge of the latter, as the case may be 14.3 The ... 17 of the Act concerning the conditions of Accession of the Czech Republic, the Republic of Estonia, the Republic of Cyprus, the Republic of Latvia, the Republic of Lithuania, the Republic of ... equal to the sum of: — 50% of the share of its respective Member State in the population of the Community in the penultimate year preceding the establishment of the ESCB; — 50% of the share of its...
Ngày tải lên: 06/03/2014, 10:20
Báo cáo khoa học: Unique features of the hemoglobin system of the Antarctic notothenioid fish Gobionotothen gibberifrons ppt
... and C mawsoni) However, the lack of a clear relationship with the Hb sequences of other nototheniid species suggests that in this case the evolution of the oxygen-transport system has occurred in ... cancels the contribution of the N-terminus to the Bohr effect These substitutions are also found in the two Hbs of G gibberifrons, characterized by the Bohr and Root effects However, these Hbs ... Fishes of the Southern Ocean Smith Institute of Ichthyology, South Africa Balushkin, A.V (1992) Classification, phylogenetic relationships, and origins of the families of the suborder Notothenioidei...
Ngày tải lên: 08/03/2014, 08:20
Paradoxical roles of the immune system during cancer development docx
... On the basis of classical theories of immune surveillance and more recent awareness of the tumour-promoting properties of innate immune cells, researchers are now investigating the efficacy of ... transplants is increased when there is a previous history of alcohol and tobacco use66,67 On the other hand, the RR for the most common non-viral-associated solid tumours of epithelial origin is decreased ... S1 (table)) These studies, together with the identification of tumour-associated antigens, have in part fuelled the development of antitumour immunotherapy approaches 68 Although these approaches...
Ngày tải lên: 15/03/2014, 01:20
The origin and evolution of the solar system woolfson
... Newton the basic structure of the solar system and the laws that govern the motions of the bodies within it have been well understood One central body, the Sun, containing most of the mass of the system ... for the origin of the solar system and their strengths and weaknesses are analysed The only theory to essay a complete picture of the origin and evolution of the solar system is the Capture Theory ... in gure 1.2 The rst of these is the longitude of the ascending node, ê, which is the angle between the ascending node and the rst point of Aires The second angle is the argument of the perihelion,...
Ngày tải lên: 17/03/2014, 13:35
manual on the application of the haccp system in mycotoxin prevention and control pdf
Ngày tải lên: 17/03/2014, 16:20