control of telomere length in drosophila

... of translocation for Drosophila melanogaster flies as searching for food in the near-field and courtship occur during walking A striking aspect of walking behaviour is the crossing of gaps of ... readily distinguished by the layers of arborisation in the medulla and the structure of their terminals in the lamina9,15 (Fig. 3c1,d1) To examine a potential role of C2 neurons in gap-crossing behaviour, ... to find novel reg-ulatory centres in the central fly brain as well as components of sensory and motor pathways involved in climbing control Expression patterns of the majority of these lines

Ngày tải lên: 19/11/2022, 11:46

... trade-offs between characters for explaining the stability of life... trident pigmentation in Drosophila melanogaster latitudinal and altitudinal clines in Indian populations, Genet Sel Evol ... isolated in culture vials to establish isofemale lines. After offspring emergence, ten lines of each species and locality were randomly taken, and from each line ten adult ... example, in absence of a significant temperature effect, we calculated a single value for each isofemale line, as carried out in table IIL Values of the ten lines could

Ngày tải lên: 09/08/2014, 18:22

... method of inverse kinematics one may obtain a time-parameterized trajectory for the joint coordinates The control design consists in solving thecontrol problem mentioned above The main interest of ... y corresponds to the joint position q and velocity ˙q, we refer to the control objectives as “position control in joint coordinates” and “motion control in joint coordinates” respec-tively Or ... topic of motion control may in its turn, be fitted in the more general framework of the so-called robot navigation The robot navigation problem consists in solving, in one single step, the following

Ngày tải lên: 10/08/2014, 01:23

... for stability of the rium in the sense of Lyapunov It is worth remarking that the conclusion ofthe Lyapunov function candidate V (t, x) is globally positive definite instead of being only locally ... proof of Theorem 2.6 follows straightforwardly from the observation that “globality” of the mentioned properties of stability, the convergence of the since in this case any solution starting ... the use of Theorem2.7 we present it next Proof of Corollary 2.1 Since W (z) is globally positive definite in z we have This means that for the solutions of (2.16), (2.17) to be contained in Ω they

Ngày tải lên: 10/08/2014, 01:23

... system In anticipation of the material in later chapters of this text and in support ofthe material of Chapter 2 it is convenient to make some remarks at this pointabout the “stability of the ... definition of stability in the sense of Lyapunov,which is presented in Definition 2.2 in Chapter 2, applies to an equilibrium(typically the origin) Hence, in studying the “stability of a robot ... regulation, – when it is desired to maintain an operatingpoint involving high and medium-high constant velocity, but the definition of Trang 63.4 Dynamic Model of Elastic-joint Robots 77sign(0) is crucial

Ngày tải lên: 10/08/2014, 01:23

... coordinates This is what is called “control injoint space” Thus, we leave the topic of kinematics to pass to the stage of modeling that is more relevant for control, from the viewpoint of this ... constitute another point of this boundary Having illustrated the inverse kinematics problem through the planar nipulator of Figure 5.2 we stop our study of inverse kinematics since it is ma-1 For ... the inverse kinematics problem The practical interest of the inverse kinematic model relies on its utility is more intuitive to specify a task for a robot in end-effector coordinates sothat interest

Ngày tải lên: 10/08/2014, 01:23

... an analysis of PD control for n-DOF robot manipulators The behavior of an n-DOF robot in closed-loop with PD control is deter- mined by combining the model Equation (II.1) with the control law ... position controllers (set-point controllers) and in Part III we study motion controllers (tracking controllers) Consider the dynamic model of a robot manipulator with n DOF, rigid links, no friction ... reference-dependent In spite of the veracity of the statement above, in the literature on robotcontrol one finds that the control laws (6.1) and (6.2) are indistinctly called “PD control” The common argument in

Ngày tải lên: 10/08/2014, 01:23

... presented in • Kawamura S., Miyazaki F., Arimoto S., 1988, “Is a local linear PD feedback control law effective for trajectory tracking of robot motion?”, in Proceed- ings of the 1988 IEEE International ... manipulators”, International Journal of Control, Vol 47, No 6, pp 1697–1712 The analysis of the PD control with gravity compensation for the case in which the desired joint position q d is time-varying ... controller uses explicitly in its control law the gravitational torques vector g(q) of the dynamic robot model to be controlled Nevertheless, it is worth remarking that even in the scenario of

Ngày tải lên: 10/08/2014, 01:23

... feedback-linearization basedcontrollers is that the stability theory of linear systems is far more developedthan that of nonlinear systems In particular, the tuning of the gains of suchcontrollers ... contains quadratic terms of the components of the joint velocities The consequence of this is thathigh order nonlinearities appear in the control law and therefore, in the case ofmodel uncertainty, ... of feedback linearizing controllers Roughly, the technique of feedback linearization in its simplestform consists in applying a control law such that the closed-loop equationsare linear Historically,

Ngày tải lên: 10/08/2014, 01:23

... way these control systems operate consists basically of the following stages: • sampling of the joint position q (and of the velocity ˙ q); • computation of the control action τ from the control ... respectively. The controller (12.4) is studied in the following section. 12.2 PD Control plus Feedforward The wide practical interest in incorporating the smallest number of computa- tions in real time ... any integer value that n takes. ♦ The following example presents the study of the feedforward control of a 3- DOF Cartesian robot. The dynamic model of this manipulator is an innocuous linear

Ngày tải lên: 10/08/2014, 01:23

... parameter uncertainty and, since then, this control scheme has become increasingly popular in the study of robot control This is the so-called adaptive controller of Slotine and Li In Chapter 11 ... the formulated control problem consists in applying PD control with adaptive compensation As is explained in Chapter 14, the structure of the adaptive controllers for motion control of robot manipulators ... >0 • 2λmin {Kp } > ε0 ε2 λMax {M } • 2λmin {Kv }[λmin {Kp } − kg ] > ε0 λ2 {Kv } Max • λmin {Kv } > ε0 , [kC1 + 2λMax {M }] then the origin of the closed-loop equation expressed in terms of the

Ngày tải lên: 10/08/2014, 01:23

... level of earnings regardless of the influence of the number of starts, an auxiliary model was used This auxiliary model was defined in order to obtain adjustment factors for earnings, as independent ... level of performance, and jumping ability DISCUSSION AND CONCLUSION This preliminary study identified some of the main factors influencing length of competitive life for jumping horses The length ... old and more, in steps of year (3P is the vector of estimates of the ’level of performance’ effects We wanted to take into account the voluntary culling of horses for reasons of lack of quality...

Ngày tải lên: 14/08/2014, 15:21

... phosphine is a quick and effective tool for the control of stored-product insect pests In view of the scheduled phaseout of methyl bromide under the Montreal protocol, the role of phosphine in grain ... Indole alkaloid pathway, 26 Induced systemic resistance(ISR), 146 Induction of Defense Metabolism, 154 Industrial sector, 107–116 Inteins, 83 Intellectual Property Rights, 378 International Institute ... Biofumigants for the Control of Pest Infestation 397 Table 16.7 Toxicity of CH3 I against stored-product insects, in space fumigation and in 600-mL chambers filled with 70% wheat Specific gravity of CH3I –2.28...

Ngày tải lên: 25/10/2013, 05:20

... fruit and fruit juice involves care at all stages of production, including preharvest practices of planting, growing of fruit, harvesting, postharvest handling, washing, and cooling and storage PREVENTIVE ... 2001.6,7 CONTROL OF MICROBIAL CONTAMINATION Microbial contamination of fruit can occur at all stages of growth, harvesting, storage, and processing The surfaces of fresh fruits are often contaminated ... is among the main reasons for contamination in fruit juice Washing and brushing fruit before the juicing step is common in juice processing According to one industry survey, 98% of orchards surveyed...

Ngày tải lên: 25/10/2013, 21:20

... tool to control AIV infections in valuable birds but not in commercial sectors Fears of kicking out our leading antiviral drugs in control of AIV are increased by adoption of amantadine (and ... protein that able to interfere with AIV replication by inhibiting viral polymerases in the nucleus and by binding viral components in the cytoplasm The role of the Mx gene in resistance against influenza ... selective inhibitor of the NA enzyme of influenza viruses [50] It is currently the drug of choice for the treatment of influenza virus infections in human and being stockpiled in many countries in anticipation...

Ngày tải lên: 21/02/2014, 01:20

... average telomere length within a cell, of chromosomespecific telomere lengths in a suspension of cells, and of the length of individual telomeres For the measurement of IFI values of each telomere, ... the entire length of the telomere Inhibition of TRF2 binding or blocking of the binding sites has been reported to result in a senescent phenotype in a subset of cells and apoptosis in other cells ... cell types, its use in large-scale screening of samples is questionable Factors in uencing telomere length Telomeres Telomeres consist of tandem repeats (of a hexameric sequence in humans), which...

Ngày tải lên: 17/03/2014, 09:20

... [Interleukin (IL4), interleukin 10 (IL10), interleukin 12B (IL12B), interleukin 12 receptor beta (IL12RB1), interleukin 12 receptor beta (IL12RB2), interleukin 18 (IL18), wingless-type MMTV integration ... linked to reducing NF-κB activation and increasing risk of infection The first SNP changes of C to T replacing arginine (Arg; R) with tryptophan (Trp, W) at position 677, abolishing the binding ... higher 32 Insight and Control of Infectious Disease in Global Scenario 2.1 Types of vaccine There are basically three ways of making vaccines against infectious diseases, all rely on a level of knowledge...

Ngày tải lên: 30/03/2014, 22:20