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  1. Article: Effect of VRN1 and PPD1 genes on anthesis date and wheat growth

    Harris, F. A. J / H. A. Eagles / J. F. Angus / J. M. Virgona / J. R. Condon / P. J. Martin

    Crop & pasture science. 2017, v. 68, no. 3

    2017  

    Abstract: Phasic development of wheat is largely determined by the interaction of the VRN1 and PPD1 genes with vernalising temperature and photoperiod. VRN1 and PPD1 are regulatory genes, known to influence freezing tolerance, plant morphology and grain yield as ... ...

    Abstract Phasic development of wheat is largely determined by the interaction of the VRN1 and PPD1 genes with vernalising temperature and photoperiod. VRN1 and PPD1 are regulatory genes, known to influence freezing tolerance, plant morphology and grain yield as well as phasic development. Forty-seven doubled-haploid lines were characterised for Ppd-B1, Ppd-D1, Vrn-A1, Vrn-B1 and Vrn-D1 to determine the effect of allelic combinations of these genes on timing of anthesis and crop growth rate. The lines were grown in replicated field experiments at two locations in Australia. The VRN1 and PPD1 genes accounted for 75% of the genetic variation for time from sowing to anthesis. Vrn-A1 and Vrn-B1 similarly affected time to anthesis, but only Vrn-B1 affected crop growth rate, with the spring Vrn-B1a allele resulting in faster crop growth rates than the winter Vrn-B1v allele. This suggests that the effect of Vrn-B1 on crop growth rate is not a direct consequence of its effect on development per se, but rather due to its influence on other physiological processes. The faster growth associated with Vrn-B1a may explain the high grain yield of cultivars with this allele in some environments, as shown in a previous study.
    Keywords alleles ; cold tolerance ; cultivars ; doubled haploids ; field experimentation ; flowering ; genetic variation ; grain yield ; photoperiod ; plant morphology ; regulator genes ; sowing ; spring ; temperature ; vernalization ; wheat ; winter ; Australia
    Language English
    Size p. 195-201.
    Publishing place CSIRO Publishing
    Document type Article
    ZDB-ID 2472536-5
    ISSN 1836-5795 ; 1836-0947
    ISSN (online) 1836-5795
    ISSN 1836-0947
    DOI 10.1071/CP16420
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Effect of VRN1 and PPD1 genes on anthesis date and wheat growth

    Harris, F. A. J. / Eagles, H. A. / Virgona, J. M. / Martin, P. J. / Condon, J. R. / Angus, J. F.

    Crop & pasture science

    2017  Volume 68, Issue 3, Page(s) 195

    Language English
    Document type Article
    ZDB-ID 2472536-5
    ISSN 1836-0947
    Database Current Contents Nutrition, Environment, Agriculture

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  3. Article: Wide-field neurons in somatosensory thalamus of domestic cats under barbiturate anesthesia.

    Harris, F A

    Experimental neurology

    1980  Volume 68, Issue 1, Page(s) 27–49

    MeSH term(s) Animals ; Brain Mapping ; Cats ; Cerebral Cortex/physiology ; Chloralose/pharmacology ; Dominance, Cerebral/physiology ; Electric Stimulation ; Evoked Potentials/drug effects ; Forelimb/innervation ; Hindlimb/innervation ; Mechanoreceptors/drug effects ; Mechanoreceptors/physiology ; Neural Pathways/drug effects ; Neural Pathways/physiology ; Neurons/drug effects ; Neurons/physiology ; Pentobarbital/pharmacology ; Thalamic Nuclei/drug effects ; Thalamic Nuclei/physiology
    Chemical Substances Chloralose (238BZ29MUE) ; Pentobarbital (I4744080IR)
    Language English
    Publishing date 1980-04
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 207148-4
    ISSN 1090-2430 ; 0014-4886
    ISSN (online) 1090-2430
    ISSN 0014-4886
    DOI 10.1016/0014-4886(80)90065-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Treatment with a position feedback-controlled head stabilizer.

    Harris, F A

    American journal of physical medicine

    1979  Volume 58, Issue 4, Page(s) 169–184

    Abstract: A position feedback-controlled head stabilizer has been developed to provide cerebral palsied individuals with resistive exercise to strengthen the neck musculature. This apparatus detects "involuntary" head motion and stabilizes the head by applying ... ...

    Abstract A position feedback-controlled head stabilizer has been developed to provide cerebral palsied individuals with resistive exercise to strengthen the neck musculature. This apparatus detects "involuntary" head motion and stabilizes the head by applying opposing forces; it also can be used to facilitate muscular contraction by resisting the subject's voluntary movements. The purpose of the present study was to determine whether voluntary head control in cerebral palsied individuals can be improved through systematic exercise using the stabilizer to strengthen the muscles of the neck and improve their balance of action. The findings support the author's contention that this is possible. The apparatus consists of a helmet and shoulder pads, interconnected so that the head is supported in the helmet by a manipulator arm. At its lower end, the manipulator arm is attached to the shoulder pad mounting frame via a gimbal assembly which allows head movement in two planes of tilt (pitch, or forward-and back, and roll, or side-to-side). Feedback control circuitry is so arranged that any deviation of the head from the desired position leads to actuation of pneumatic cylinders, which apply torques to the manipulator gimbal axes so as to oppose or conteract the incipient head movement. It is particularly significant that none of these patients participating in these experiments were at all apprehensive about or resisted being placed in the apparatus. (Even the youngest subject to use the apparatus--five year old-- did not mind being restrained by the shoulder pads or having his head gripped by helment.) While JG utilized the safety release valve quite often during the first few head control training sessions, he soon became confident enough in the action of the stabilizer that he did not even bother to grip the handle of the release valve. While DA had the action of safety valve explained and demonstrated for her, she never bothered to use it even from the outset of her experience with the stabilizer. Thus, it seems that the football shoulder pads use to stabilize the shoulders and the hockey helmet used to grip and manipulate the head actually make the apparatus attractive to younger patients, while the padding thereby provided makes it comfortable enough to be tolerated well by older individuals. And, the subject's knowing that he has an override control by means of which he can assert command over the entire system appears to be of psychological benefit in establishing confidence in both the apparatus and the investigator.
    MeSH term(s) Adolescent ; Adult ; Cerebral Palsy/rehabilitation ; Dental Care ; Feedback ; Female ; Head ; Humans ; Male ; Self-Help Devices
    Language English
    Publishing date 1979-08
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 219390-5
    ISSN 1537-7385 ; 0002-9491 ; 0894-9115
    ISSN (online) 1537-7385
    ISSN 0002-9491 ; 0894-9115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Cotton insect control--a balancing act: production, resistance management, secondary pests, and the environment

    Harris, F.A

    Proceedings of the ... Beltwide Cotton Production Conference. 1989.

    1989  

    Keywords Gossypium ; insect control
    Language English
    Size p. 29-33.
    Document type Article
    Note Meeting held January 3-4, 1989, Nashville, Tennessee.
    ISSN 1052-5351
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Correction of muscle imbalance in spasticity.

    Harris, F A

    American journal of physical medicine

    1978  Volume 57, Issue 3, Page(s) 123–138

    Abstract: A summary is presented of observations made and results obtained during evaluation and preliminary treatment of twenty-one predominantly spastic cerebral palsied subjects, whose neuromuscular function was studied in each of four positions (supine, prone, ...

    Abstract A summary is presented of observations made and results obtained during evaluation and preliminary treatment of twenty-one predominantly spastic cerebral palsied subjects, whose neuromuscular function was studied in each of four positions (supine, prone, kneeling and sitting on the floor) and in three dynamic situations (rising to standing, maintaining standing balance, and ambulating). A description is given of the procedures utilized to; (i) correct the imbalance of muscle tone imposing abnormal "resting" joint positions and limiting the range of their voluntary movements, and (ii) assist them in developing the sensorimotor function requisite for postural stability and voluntary motor control, involving exercises performed in each of the four positions and in transitions between them. Resistance exercises performed with the investigator and independent exercises both were included in the program. Case studies of a six-year-old spastic with "pre-athetoid" tendencies, an 11-year old spastic and a 32-year-old spastic are provided to illustrate typical initial evaluations, therapeutic activities subsequently utilized to improve neuromuscular function, and results thereby obtained.
    MeSH term(s) Adult ; Cerebral Palsy/rehabilitation ; Child ; Female ; Humans ; Male ; Muscle Contraction ; Muscle Spasticity/physiopathology ; Muscle Spasticity/therapy ; Muscle Tonus ; Physical Therapy Modalities/methods ; Postural Balance ; Posture
    Language English
    Publishing date 1978-06
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 219390-5
    ISSN 1537-7385 ; 0002-9491 ; 0894-9115
    ISSN (online) 1537-7385
    ISSN 0002-9491 ; 0894-9115
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  7. Article: Muscle stretch receptor hypersensitization in spasticity. Inapproprioception, Part III.

    Harris, F A

    American journal of physical medicine

    1978  Volume 57, Issue 1, Page(s) 16–28

    Abstract: The author's concept of Inapproprioception, which accounts for athetoid movements in terms of defective proprioceptive feedback (i.e., distortion of afferent signals representing limb position) is extended here to explain spasticity in cerebral palsy was ...

    Abstract The author's concept of Inapproprioception, which accounts for athetoid movements in terms of defective proprioceptive feedback (i.e., distortion of afferent signals representing limb position) is extended here to explain spasticity in cerebral palsy was well. Descending activation of gamma efferents supplying hypertonic muscles may be excessive, leading to hypersensitization of stretch receptors in those muscles (the exact distribution of muscles affected varying with the individual). The result is exaggerated reflex activation of alpha motoneurons in response to the slightest muscle stretch. Even passive tension due to gravitational forces, which is inescapable, results in excessive impulse discharge from sensitized stretch afferents and thus leads to reflex contractions simply in response to shifts in body position. The affected muscles shorten to a length corresponding to the elevated level of reflexly originating motoneuron discharge, manifesting excessive tone even in the contracted state. The distribution of hypertonicity thus induced usually follows a predictable pattern and can be modified using slow passive stretch of hypertonic muscles to relax them, followed by facilitated voluntary contraction to strengthen weak antagonists, and progressing to functional reciprocal usage of agonists and antagonists to achieve proper muscle balance. Application of this procedure leads to improved posture, balance and ambulation in subjects with spastic cerebral palsy.
    MeSH term(s) Adolescent ; Adult ; Athetosis/physiopathology ; Cerebral Palsy/physiopathology ; Child ; Child, Preschool ; Female ; Humans ; Male ; Mechanoreceptors/physiopathology ; Muscle Relaxation ; Muscle Spasticity/physiopathology ; Muscle Spasticity/therapy ; Muscle Tonus ; Physical Therapy Modalities ; Posture
    Language English
    Publishing date 1978-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 219390-5
    ISSN 1537-7385 ; 0002-9491 ; 0894-9115
    ISSN (online) 1537-7385
    ISSN 0002-9491 ; 0894-9115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Regional variations of somatosensory input convergence in nucleus VPL of cat thalamus.

    Harris, F A

    Experimental neurology

    1978  Volume 58, Issue 2, Page(s) 171–189

    MeSH term(s) Animals ; Cats ; Evoked Potentials ; Foot/innervation ; Mechanoreceptors/physiology ; Neural Inhibition ; Neurons/physiology ; Reaction Time ; Skin/innervation ; Somatosensory Cortex/cytology ; Somatosensory Cortex/physiology ; Thalamic Nuclei/cytology ; Thalamic Nuclei/physiology ; Touch/physiology
    Language English
    Publishing date 1978-01-15
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 207148-4
    ISSN 1090-2430 ; 0014-4886
    ISSN (online) 1090-2430
    ISSN 0014-4886
    DOI 10.1016/0014-4886(78)90132-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Functional subsets of neurons in somatosensory thalamus of the cat.

    Harris, F A

    Experimental neurology

    1978  Volume 58, Issue 2, Page(s) 149–170

    MeSH term(s) Animals ; Cats ; Evoked Potentials ; Foot/innervation ; Mechanoreceptors/physiology ; Neurons/physiology ; Reaction Time ; Skin/innervation ; Somatosensory Cortex/cytology ; Somatosensory Cortex/physiology ; Thalamus/cytology ; Thalamus/physiology
    Language English
    Publishing date 1978-01-15
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 207148-4
    ISSN 1090-2430 ; 0014-4886
    ISSN (online) 1090-2430
    ISSN 0014-4886
    DOI 10.1016/0014-4886(78)90131-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Book ; Conference proceedings ; Online: B Physics and Cp Violation

    Browder, T. E / Harris, F. A / Pakvasa, S

    Proceedings of the 2nd International Conference

    1998  

    Abstract: CP violation is one of the most subtle effects in the Standard Model of particle physics and may be the first clue to the physics that lies beyond. Charge conjugation, C, and parity, P, are symmetries of particle interactions. C corresponds to the ... ...

    Abstract CP violation is one of the most subtle effects in the Standard Model of particle physics and may be the first clue to the physics that lies beyond. Charge conjugation, C, and parity, P, are symmetries of particle interactions. C corresponds to the operation of replacing a particle by its antiparticle, while P is the operation of mirror reflection. Before 1956, it was believed that these were also symmetries of the interactions of elementary particles. In 1956, C S Wu found evidence for P violation in the weak interaction. Theorists proposed that the combination of CP would be a symmetry of the
    Language English
    Size Online-Ressource (528 p)
    Publisher World Scientific Publishing Company
    Publishing place Singapore
    Document type Book ; Conference proceedings ; Online
    Note Description based upon print version of record
    ISBN 9789810233709 ; 9810233701
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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