oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 1 )

2018 ( 13 )

2017 ( 15 )

2016 ( 28 )

Custom range...

Search Results: 1 - 10 of 7125 matches for " Marcus Robinson "
All listed articles are free for downloading (OA Articles)
Page 1 /7125
Display every page Item
Explicit Hilbert-Kunz functions of 2 x 2 determinantal rings
Marcus Robinson,Irena Swanson
Mathematics , 2013,
Abstract: Let $k[X] = k[x_{i,j}: i = 1,..., m; j = 1,..., n]$ be the polynomial ring in $m n$ variables $x_{i,j}$ over a field $k$ of arbitrary characteristic. Denote by $I_2(X)$ the ideal generated by the $2 \times 2$ minors of the generic $m \times n$ matrix $[x_{i,j}]$. We give a closed formulation for the dimensions of the $k$-vector space $k[X]/(I_2(X) + (x_{1,1}^q,..., x_{m,n}^q))$ as $q$ varies over all positive integers, i.e., we give a closed form for the generalized Hilbert-Kunz function of the determinantal ring $k[X]/I_{2}[X]$. We also give a closed formulation of dimensions of related quotients of $k[X]/I_{2}[X]$. In the process we establish a formula for the numbers of some compositions (ordered partitions of integers), and we give a proof of a new binomial identity.
Treatment of Hip Trochanteric Bursitis Using Hyaluronate Injections  [PDF]
Lauren Gorelick, Ayala Rozano-Gorelick, Dror Robinson, Ohad Marcus, Samia Joubran, Edward Ram
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2013, DOI: 10.4236/ojra.2013.32019
Abstract:

Trochanteric bursitis is a common cause of musculoskeletal pain and often requires medical intervention and should be distinguished from sciatica and irradiating pain of pelvic and spinal origin. Previously, the etiology of the trochanteric pain syndrome was thought to be caused by inflammation. The current study was performed in order to assess the efficacy of trochanteric injections. Methods: 158 patients were treated for trochanteric bursitis (132 females/26 males, range 22 - 88 years). 59b were treated with corticosteroid injection, 60 with hyaluronate and 39 were injected using a combination of both. Patients were followed by the HOOS score for a minimum of 12 months. Results: Pre-operative HOOS scores were similar in all groups. Following injection, the HOOS score increased from 27 ± 4 to 66 ± 2 after six months and 77 ± 4 after a year. At 12-month follow-up, the average score of patients treated by corticosteroids injection was 44 ± 7 compared with 62 ± 8 for the hyaluronate injected group and 64 ± 6 for the combination injection group. Discussion: It appears that injection therapy is highly efficacious for treating trochanteric bursitis. The effect of hyaluronate or hyaluronate and steroid combination appears to be longer lasting than that of steroid alone.

Dissection and Exposure of the Whole Course of Deep Nerves in Human Head Specimens after Decalcification
Longping Liu,Robin Arnold,Marcus Robinson
International Journal of Otolaryngology , 2012, DOI: 10.1155/2012/418650
Abstract: The whole course of the chorda tympani nerve, nerve of pterygoid canal, and facial nerves and their relationships with surrounding structures are complex. After reviewing the literature, it was found that details of the whole course of these deep nerves are rarely reported and specimens displaying these nerves are rarely seen in the dissecting room, anatomical museum, or atlases. Dissections were performed on 16 decalcified human head specimens, exposing the chorda tympani and the nerve connection between the geniculate and pterygopalatine ganglia. Measurements of nerve lengths, branching distances, and ganglia size were taken. The chorda tympani is a very fine nerve (0.44 mm in diameter within the tympanic cavity) and approximately 54 mm in length. The mean length of the facial nerve from opening of internal acoustic meatus to stylomastoid foramen was 52.5 mm. The mean length of the greater petrosal nerve was 26.1 mm and nerve of the pterygoid canal was 15.1 mm.
Dissection and Exposure of the Whole Course of Deep Nerves in Human Head Specimens after Decalcification
Longping Liu,Robin Arnold,Marcus Robinson
International Journal of Otolaryngology , 2012, DOI: 10.1155/2012/418650
Abstract: The whole course of the chorda tympani nerve, nerve of pterygoid canal, and facial nerves and their relationships with surrounding structures are complex. After reviewing the literature, it was found that details of the whole course of these deep nerves are rarely reported and specimens displaying these nerves are rarely seen in the dissecting room, anatomical museum, or atlases. Dissections were performed on 16 decalcified human head specimens, exposing the chorda tympani and the nerve connection between the geniculate and pterygopalatine ganglia. Measurements of nerve lengths, branching distances, and ganglia size were taken. The chorda tympani is a very fine nerve (0.44?mm in diameter within the tympanic cavity) and approximately 54?mm in length. The mean length of the facial nerve from opening of internal acoustic meatus to stylomastoid foramen was 52.5?mm. The mean length of the greater petrosal nerve was 26.1?mm and nerve of the pterygoid canal was 15.1?mm. 1. Introduction Topographic knowledge of the deep nerves of the head is not easily gained by students because of the deep location of these small structures and the difficulty in dissecting them out in the short amount of class time available. Anatomical drawings provide an elementary introduction to anatomy [1] but offer only theoretical knowledge. Because dissections are unlikely to be performed by all the students [2], making good teaching prosections for gross anatomy laboratories and museums is very important. After reviewing the literature [2–9], it was found that most studies paid attention to different points of the deep nerves of the human head without studying the whole course of the nerves. Some authors viewed parts of the deep nerves, some observed deep nerves using microscopic or CT imaging techniques. Trost et al. [2] studied the chorda tympani by marking the nerve with 3/0 iron wire in the infratemporal fossa. After meticulous repositioning of surrounding structures, standard radiography and CT scan examinations were performed. Just et al. [10] found that pain-related sensitivity of the ipsilateral tongue side decreases after middle ear surgery, suggesting its function influences both gustatory sensibility and intraoral trigeminal sensitivity. Early studies [3] of the facial nerve investigated the position, course, and fibre content of its various functional components. Histological analyses of the roots, trunks and branches of facial nerve were conducted as well. All operations of this study were performed on the right side of adult animals, and not human cadavers. Shimozawa [5]
Controlled Fabrication of Metallic Electrodes with Atomic Separation
A. F. Morpurgo,D. B. Robinson,C. M. Marcus
Physics , 1998, DOI: 10.1063/1.123765
Abstract: We report a new technique for fabricating metallic electrodes on insulating substrates with separations on the 1 nm scale. The fabrication technique, which combines lithographic and electrochemical methods, provides atomic resolution without requiring sophisticated instrumentation. The process is simple, controllable, reversible, and robust, allowing rapid fabrication of electrode pairs with high yield. We expect the method to prove useful in interfacing molecular-scale structures to macroscopic probes and electronic devices .
Grave complica??o do tratamento de epistaxe: relato de caso
Arbulú, Carlos Z.;Tsuji, Robinson K.;Lessa, Marcus M.;Voegels, Richard L.;Butugan, Ossamu;
Revista Brasileira de Otorrinolaringologia , 2004, DOI: 10.1590/S0034-72992004000100021
Abstract: epistaxis is a very usual disorder, it is usually self-restricted or controlled with conservative measures as local compression, cold gauze, arterial pressure control, cauterization under local anesthesia (chemical or thermoelectric) or anterior nasal packing. however, it could be presented as severe cases, and more aggressive measures could be necessary, like posterior nasal packing, arterial ligation or embolization. we present one case of a forty-nine-year-old patient with epistaxis who developed a severe treatment complication from another department.
Grave complica o do tratamento de epistaxe: relato de caso
Arbulú Carlos Z.,Tsuji Robinson K.,Lessa Marcus M.,Voegels Richard L.
Revista Brasileira de Otorrinolaringologia , 2004,
Abstract: Epistaxe é uma afec o muito comum, sendo geralmente autolimitada ou tratada com medidas mais conservadoras como compress o local, compressas frias, controle da press o arterial, cauteriza o sob anestesia local (química ou termo-elétrica) ou tamponamento nasal anterior. Contudo, podem se apresentar como quadros graves e de difícil tratamento, sendo necessárias medidas mais agressivas como tamponamento nasal antero-posterior, ligadura arterial cirúrgica ou emboliza o. Apresentamos o caso de um paciente de 49 anos de idade que cursou com epistaxe de difícil controle e evoluiu com uma grave complica o relacionada ao tratamento realizado em outro servi o.
Non-Vitamin K Antagonist Oral Anticoagulants: Redefining the Role of the Nurse to Improve Patient Care  [PDF]
Marlene Robinson
Open Journal of Nursing (OJN) , 2015, DOI: 10.4236/ojn.2015.512121
Abstract: Thromboembolic disorders and their associated long-term complications place a burden on patients, healthcare systems and society. Non-vitamin K antagonist (VKA) oral anticoagulants (OACs), including rivaroxaban, dabigatran, apixaban and edoxaban, are effective for the prevention of stroke in patients with non-valvular atrial fibrillation and for the treatment and secondary prevention of venous thromboembolism. The increasing uptake of the non-VKA OACs in primary care lessens the burden of care and allows for an easier transition of treatment from hospital to home. This transformation in terms of patient management has resulted in the need to empower nurses working in this field to endorse management strategies with a focus on patient education and long-term management (i.e. assessment of compliance, scheduling follow-up visits). Management of both venous thromboembolism and stroke prevention in patients with non-valvular atrial fibrillation requires a multidisciplinary team approach and, looking to the future, nurses are likely to have a key role at the heart of the thrombosis team. This review aims to provide nurses with the confidence to manage patients with thromboembolic disorders, and highlights the importance of responsible non-VKA OAC use and the impact that this can have on improving patient care and outcomes.
PCRR Based Bandpass Filter for C and L+U Bands of ITU-T G.694.2 CWDM Systems  [PDF]
S. Robinson, R. Nakkeeran
Optics and Photonics Journal (OPJ) , 2011, DOI: 10.4236/opj.2011.13024
Abstract: A two Dimensional (2D) Photonic Crystal Ring Resonator (PCRR) based Bandpass Filter (BPF) is designed to cover C and L+U bands of Coarse Wavelength Division Multiplexing (CWDM) systems. It is devised with two quasi waveguides and a circular PCRR. The simulation results are obtained using 2D Finite Difference Time Domain (FDTD) method. The Photonic Band Gap (PBG) is calculated by Plane Wave Expansion (PWE) method. The BPFs allow the entire C-band (BPF1) and L+U bands (BPF2), which are extended from 1530 to 1565 nm (C band) and 1565 to 1675 nm (L+U bands). The computed bandwidth of BPF1 and BPF2 is 32 nm and 97 nm respectively. The size of the device is minimized from a scale of few tens of millimeters to the order of micrometers. The overall size of the BPF1 is around 12.8 µm × 11.4 µm and 11.4 µm × 11.4 µm for BPF2.
The Conservation of Energy Space-Time Metric for Space Outside Matter  [PDF]
V. N. E. Robinson
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.48149
Abstract:

By using experimentally determined measurements of potential energy together with the principle of conservation of energy and solving directly, the space-time geometry equation for space outside matter is obtained. That equation fits all the experimental observations that support the accepted Schwarzschild metric, yet predicts there isn’t a singularity at the Schwarzschild radius. The accepted Schwarzschild metric is the first approximation of the conservation of energy space-time metric. No observation yet made can distinguish between the predictions of the two metrics.

Page 1 /7125
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.